Exhaustion apparatus, cooking appliance having exhaustion apparatus, and method of controlling the cooking appliance

Abstract

An exhaustion apparatus may include: a body; a fan configured to draw air in and discharge the air from the main body; a first suction part in a first area of a panel of the body, and configured to guide a flow of air draw in from the first area; a second suction part in a second area of the panel that is forward of the first area, and configured to rotate such that the second suction part is tiltable relative to the main body and to guide a flow of air drawn in from the second area; and a drive assembly configured to: rotate the second suction part such that the second suction part is tilted and at least a portion of the second suction part is protruded from the main body, and rotate the second suction part such that the protruded portion is retracted to the main body.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This is a continuation application, under 35 U.S.C. § 111(a), of International Application No. PCT / KR 2025 / 015596, filed Oct. 1, 2025, which claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2024-0163600, filed Nov. 15, 2024, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entireties by reference.TECHNICAL FIELD

[0002] The disclosure relates to an exhaustion apparatus for drawing in contaminated air generated during cooking of food through other cooking appliances and discharging the drawn contaminated air to the outside, a cooking appliance having the exhaustion apparatus, and a method of controlling the cooking appliance.BACKGROUND ART

[0003] A cooking appliance is a device that cooks food by heating the food, and is broadly divided into a method of generating heat for heating food using electricity and a method of generating heat for heating food by burning gas. For example, cooking appliances may be classified into gas ranges, ovens, induction heaters, highlights, and microwave ovens.

[0004] Cooking appliances generate smoke and odors during cooking of food. Therefore, an exhaustion apparatus is provided in the room to discharge smoke and odors generated during cooking of food to the outside.

[0005] Recently, microwave ovens (OTR: Over The Range) equipped with exhaustion apparatuses have been installed on the wall of the upper space within a room, and other cooking appliances (e.g., gas ranges, ovens, induction heaters, highlights, etc.) are installed below the microwave oven but on the floor of the room, thereby allowing a plurality of cooking appliances to be used in a certain area within the room.

[0006] In this case, the exhaustion apparatus provided in the microwave oven draw in smoke or odors generated from other cooking appliances provided below the microwave oven from above the other cooking appliances, and discharges the drawn smoke or odors to the outside. Conventional exhaustion apparatuses are effective for drawing in smoke and odors that rise vertically from a horizontal plane in which the exhaustion apparatus is provided toward the upper part of the room, but are not effective in drawing in smoke or odors that are generated in areas outside the horizontal plane covered by the microwave oven and move from the front of the microwave oven toward the center of the room, or smoke or odors that rise vertically from areas below not covered by the microwave oven. Accordingly, conventional exhaustion apparatuses suffer from low suction and exhaust performance.DISCLOSURETechnical Problem

[0007] An aspect of the disclosure provides an exhaustion apparatus that controls a tilting rotation of a second suction part to draw in air contaminated by food cooking from a front side and a lower side and discharge the drawn contaminated air to the outside, a cooking appliance having the exhaustion apparatus, and a method of controlling the cooking appliance.

[0008] Another aspect of the disclosure provides an exhaustion apparatus that controls an exhaust level based on a contamination level of air contaminated by food cooking and controls at least one fan and the tilting angle of the second suction part based on the exhaust level, a cooking appliance having the exhaustion apparatus, and a method of controlling the cooking appliance.Technical Solution

[0009] In accordance with the present disclosure, an exhaustion apparatus may include: a main body including a plurality of panels; a fan inside the main body and configured to draw air in to the main body and discharge, from the main body, the air that is drawn in; a first suction part in a first area of a first panel among the plurality of panels, the first suction part configured to guide a flow of air drawn in from the first area by the fan; a second suction part in a second area of the first panel that may be forward of the first area relative to a front of the main body, the second suction part configured to rotate relative to the main body such that the second suction part may be tiltable relative to the main body, and to guide a flow of air drawn in from the second area by the fan; and a drive assembly configured to: rotate the second suction part relative to the main body such that the second suction part may be tilted relative to the main body and at least a portion of the second suction part may be protruded from the main body, and rotate the second suction part relative to the main body such that the portion protruded from the main body may be retracted to the main body.

[0010] The drive assembly may include: a drive motor, a gear connected to the drive motor and configured to convert a rotational motion of the drive motor into a translational motion, and a connecting rod between the gear and the second suction part, the connecting rod configured to be moved by movement of the gear and based on a force applied to the connecting rod by the movement of the gear, transmit the applied force to the second suction part.

[0011] A direction of the force transmitted to the second suction part by the connecting rod may be determined by a rotation direction of the drive motor, and protrusion and retraction of an intake port of the second suction part relative to the main body may be determined by the rotation direction of the drive motor.

[0012] The exhaustion apparatus may further include: a sensor configured to: detect a contamination level of the air that is drawn in to the main body by the fan, and output data corresponding to the detected contamination level; and a controller configured to control a rotation speed of the fan and a tilting angle of the second suction part based on data output by the sensor.

[0013] The controller may be further configured to increase the rotation speed of the fan based on an increase in the contamination level detected by the sensor.

[0014] The controller may be further configured to increase the tilting angle of the second suction part based on an increase in the contamination level detected by the sensor.

[0015] In accordance with the present disclosure, a cooking appliance may include: a main body including a cooking chamber; a door configured to open and close the cooking chamber; a fan in a space between the main body and the cooking chamber and configured to draw air in to the main body and discharge, from the main body, the air that is drawn in; a first suction part in a first area of a panel on a bottom side of the main body, the first suction part configured to guide a flow of air drawn in from the first area by the fan; a second suction part in a second area of the panel that may be forward of the first area relative to a front of the main body, the second suction part configured to rotate relative to the main body such that the second suction part may be tilted relative to the main body, and to guide a flow of air drawn in from the second area by the fan; and a drive assembly configured to: rotate the second suction part relative to the main body such that the second suction part may be tilted relative to the main body and at least a portion of the second suction part may be protruded from the main body, and rotate the second suction part relative to the main body such that the portion protruded from the main body may be retracted to the main body.

[0016] The drive assembly may include: a drive motor, a gear connected to the drive motor and configured to convert a rotational motion of the drive motor into a translational motion, and a connecting rod between the gear and the second suction part, the connecting rod configured to be moved by movement of the gear and based on a force applied to the connecting rod by the movement of the gear, transmit the applied force to the second suction part, a direction of the force transmitted to the second suction part by the connecting rod may be determined by a rotation direction of the drive motor, and protrusion and retraction of an intake port of the second suction part relative to the main body may be determined by the rotation direction of the drive motor.

[0017] The cooking appliance may further include: a sensor configured to: detect a contamination level of the air that is drawn in to the main body by the fan, and output data corresponding to the detected contamination level; and a controller configured to control a rotation speed of the fan and a tilting angle of the second suction part based on data output by the sensor.

[0018] The controller may be further configured to increase the rotation speed of the fan based on an increase in the contamination level detected by the sensor.

[0019] The controller may be further configured to increase the tilting angle of the second suction part based on an increase in the contamination level detected by the sensor.

[0020] The cooking appliance may further include: a communication device configured to communicate with another cooking appliance that may be below the main body, wherein the controller may be further configured to: identify a cooking zone of the another cooking appliance based on cooking information received, through the communication device, from the another cooking appliance, and control rotation of the second suction part based on a position of the identified cooking zone.

[0021] The sensor may be a first sensor and the cooking appliance may further include a second sensor, the first sensor may be in the first area of the panel and the second sensor may be in the second area of the panel, the first sensor may be configured to: detect a contamination level of air that may be drawn in the first area by the fan, and output data corresponding to the detected contamination level of air drawn in the first area, the second sensor may be configured to: detect a contamination level of air that may be drawn in the second area by the fan, and output data corresponding to the detected contamination level of air drawn in the second area, and the controller may be further configured to control rotation of the second suction part based on the data output by the first sensor and the data output by the second sensor.

[0022] The cooking appliance may further include: an image sensor configured to obtain an image of another cooking appliance that may be below the main body, wherein the controller may be further configured to: identify a cooking zone of the another cooking appliance based on the obtained image, and control rotation of the second suction part based on a position of the identified cooking zone.

[0023] The cooking appliance may further include: an input device configured to receive a user input, wherein the controller may be further configured to: based on a manual mode and an exhaust level being received through the input device, control a rotation speed of the fan, and control rotation of the second suction part.

[0024] The cooking appliance further includes: a magnetron and further includes one or more heaters.

[0025] A method of controlling a cooking appliance according to another aspect is a method of controlling a cooking appliance including at least one fan provided in a main body, a cooking chamber, and first and second suction parts provided on a lower side of the main body, which includes: identifying a contamination level of contaminated air detected by a contamination level sensor; controlling the at least one fan at a first rotation speed based on whether the identified contamination level of contaminated air is equal to or higher than a reference contamination level; controlling the at least one fan at a second rotation speed while controlling the at least one fan at the first rotation speed based on an increase in contamination level; and controlling a tilting rotation of the second suction part so that the second suction part protrudes to the outside of the main body while controlling the at least one fan at the second rotation speed based on an increase in contamination level.

[0026] The controlling of the tilting rotation of the second suction part so that the second suction part protrudes to the outside of the main body includes determining a tilting angle of the second suction part based on the contamination level and controlling the tilting rotation of the second suction part based on the determined tilting angle.

[0027] The method of controlling the cooking appliance according to yet another aspect further includes drawing in contaminated air present below the main body using a plurality of suction holes of the first suction part and drawing in contaminated air present in front of the main body using the intake port of the second suction part when the intake port protrudes.

[0028] The method of controlling the cooking appliance according to yet another aspect further includes controlling the rotation speed of at least one fan and controlling the tilting rotation of the second suction part based on a manual mode and exhaust level being received through the input device.Advantageous Effects

[0029] According to the disclosure, the disclosure can easily draw in contaminated air escaping from the cooking area by drawing in air contaminated during cooking of food in the second cooking appliance through the first suction part of the exhaustion apparatus provided below the first cooking appliance and the second suction part of the exhaustion apparatus provided in front of the first cooking appliance.

[0030] The disclosure can efficiently draw in a larger amount of contaminated air than before while maintaining a size of a cooking area of the existing cooking system and improve the discharge capability of contaminated air.

[0031] The disclosure can make the exhaustion apparatus and the first cooking appliance more compact as the suction and discharge capability of contaminated air improves.

[0032] The disclosure can efficiently draw in and discharge contaminated air by adjusting the opening degree of the intake port of the second suction part based on the contamination level of contaminated air.

[0033] The disclosure can provide smart discharge technology and improve user convenience by adjusting the opening degree of the second suction part based on at least one of the cooking situation of food in the second cooking appliance and user input.

[0034] The disclosure can improve the marketability of the first cooking appliance and exhaustion apparatus and further ensure competitiveness of the first cooking appliance and exhaustion apparatus.DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a block diagram of a cooking system including an exhaustion apparatus according to an embodiment of the present disclosure.

[0036] FIG. 2 is a perspective view of a first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0037] FIG. 3 is an exemplified views of an internal space of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0038] FIG. 4 is exemplified views of an internal space of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0039] FIG. 5 is an exemplified view of arrangement of a first fan of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0040] FIG. 6 is an exemplified view of a first panel of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0041] FIG. 7 is a bottom view of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0042] FIG. 8 is an exemplified view of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0043] FIG. 9 is an exemplified view of an operation of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0044] FIG. 10 is an exemplified view of arrangement of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0045] FIG. 11 is a detailed structural diagram of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0046] FIG. 12A is an exemplary views of an operation of a second suction part by an operation of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0047] FIG. 12B is an exemplary views of an operation of a second suction part by an operation of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0048] FIG. 13 is a control block diagram of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0049] FIG. 14 is an exemplary view of cooking zone recognition for identifying a cooking zone of a second cooking appliance using the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0050] FIG. 15 is an exemplary view of cooking zone recognition for identifying a cooking zone of a second cooking appliance using the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0051] FIG. 16 is an exemplary view of cooking zone recognition for identifying a cooking zone of a second cooking appliance using the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0052] FIG. 17 is an exemplified view illustrating a variation in the suction ratio of contaminated air through first and second intake ports of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0053] FIG. 18A is a diagram showing the density of carbon dioxide when the second suction part is retracted inside the main body.

[0054] FIG. 18B is a diagram showing the density of carbon dioxide when the second suction part is exposed to the outside of the main body.

[0055] FIG. 18C is a diagram showing velocity vectors of contaminated air when the second suction part is exposed to the outside of the main body.

[0056] FIG. 19A and FIG. 19B are a control flowchart of automatic exhaust of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0057] FIG. 20A and FIG. 20B are a control flowchart of the tilting angle of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.MODE OF INVENTION

[0058] The various embodiments of the disclosure and terminology used herein are not intended to limit the technical features of the disclosure to the specific embodiments, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the concept and scope of the disclosure.

[0059] In the description of the drawings, like numbers refer to like elements throughout the description of the drawings.

[0060] The singular forms preceded by “a,”“an,” and “the” corresponding to an item are intended to include the plural forms as well unless the context clearly indicates otherwise. In the disclosure, a phrase such as “A or B,”“at least one of A and B,”“at least one of A or B,”“A, B or C,”“at least one of A, B and C,” and “at least one of A, B, or C” may include any one of the items listed together in the corresponding phrase of the phrases, or any possible combination thereof.

[0061] As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (for example., importance or order).

[0062] When one (e.g., a first) element is referred to as being “coupled” or “connected” to another (e.g., a second) element with or without the term “functionally” or “communicatively,” it means that the one element is connected to the other element directly, wirelessly, or via a third element.

[0063] It will be understood that the terms “include”, “comprise” and / or “have” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0064] It is to be understood that if a certain component is referred to as being “coupled with,”“coupled to,”“supported on” or “in contact with” another component, it means that the component may be coupled with the other component directly or indirectly via a third component.

[0065] Throughout the specification, when a member is referred to as being “on” another member, the member is in contact with another member or yet another member is interposed between the two members.

[0066] The term “and / or” includes combinations of one or all of a plurality of associated listed items.

[0067] Hereinafter, operating principles and embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0068] FIG. 1 is a block diagram of a cooking system including an exhaustion apparatus according to an embodiment of the present disclosure.

[0069] A cooking system may include an exhaustion apparatus 1, a first cooking appliance 2, and a second cooking appliance 3.

[0070] The exhaustion apparatus 1 may be provided in a cooking area CA of a room. The exhaustion apparatus 1 may be provided adjacent to a wall W of the cooking area CA of the room and separated from the floor surface of the room. The exhaustion apparatus 1 may be provided in a middle area of the wall provided in the cooking area of the room.

[0071] The exhaustion apparatus 1 may be provided in the first cooking appliance 2. The exhaustion apparatus 1 may be provided in a lower portion of the first cooking appliance 2. The exhaustion apparatus 1 may be fixedly provided to the first cooking appliance 2.

[0072] The exhaustion apparatus 1 draws in smoke and odors generated during cooking of food through the second cooking appliance 3 and discharges the drawn smoke and odors to the outside. Hereinafter, smoke and odors will be referred to as ‘contaminated air’.

[0073] The exhaustion apparatus 1 may be provided above the second cooking appliance 3. The exhaustion apparatus 1 may be arranged spaced apart from the second cooking appliance 3 by a certain distance.

[0074] The exhaustion apparatus 1 may draw in contaminated air existing below the exhaustion apparatus 1. The contaminated air existing below the exhaustion apparatus 1 may be air existing between the exhaustion apparatus 1 and the second cooking appliance 3. The contaminated air existing below the exhaustion apparatus 1 may be air generated during an operation of the second cooking appliance 3.

[0075] The exhaustion apparatus 1 may draw in contaminated air moving from the front of the exhaustion apparatus 1 to the central area of the room.

[0076] The front of the exhaustion apparatus 1 may include the front of the first cooking appliance, may include the front of the second cooking appliance, and may include the front of the cooking area of the room.

[0077] The exhaustion apparatus 1 may adjust the amount of air drawn from the front based on the amount of contaminated air moving from the front of the exhaustion apparatus 1 to the central area of the room.

[0078] The exhaustion apparatus 1 is a device that draws in contaminated air existing in at least one space and discharges the drawn air to the outside, and may be the same device as an intake device or ventilation device. In the embodiment, it will be described as an exhaustion apparatus.

[0079] The configuration of the exhaustion apparatus 1 will be described in detail later.

[0080] The first cooking appliance 2 may be provided in the cooking area of the room. The first cooking appliance 2 may be provided adjacent to the wall of the cooking area of the room and separated from the floor surface of the room. The first cooking appliance 2 may be provided in a middle area of the wall provided in the cooking area of the room.

[0081] The first cooking appliance 2 may include the exhaustion apparatus 1. The exhaustion apparatus 1 may be fixedly installed below such first cooking appliance 2.

[0082] The first cooking appliance 2 may include a magnetron that generates microwaves. In this case, the first cooking appliance 2 may cook food by irradiating microwaves, generated from the magnetron, onto the food, causing water molecules in the food to undergo translational motion and generate friction heat.

[0083] The first cooking appliance 2 may be a microwave oven.

[0084] The first cooking appliance 2 may include a high voltage transformer (HVT), a high voltage diode, and a high voltage capacitor for providing high voltage to the magnetron.

[0085] The high voltage transformer receives AC power from the outside and transforms the ac power to high voltage, and may further include a primary coil that receives AC power, a secondary coil that transforms the AC power to a high voltage, and a filament coil that transforms the input AC power to a low voltage.

[0086] The first cooking appliance 2 may also include one or more heaters, and may further include a steam generator that generates steam.

[0087] The second cooking appliance 3 may be provided in the cooking area of the room. The second cooking appliance 3 may be provided adjacent to the wall of the cooking area of the room and fixed to the floor surface of the room. The second cooking appliance 3 may be provided in a lower area of the wall provided in the cooking area of the room.

[0088] The second cooking appliance 3 may be provided spaced apart from the exhaustion apparatus 1 by a certain distance.

[0089] The second cooking appliance 3 may also be provided spaced apart from the first cooking appliance 2.

[0090] The second cooking appliance 3 may be provided below the exhaustion apparatus 1.

[0091] The second cooking appliance 3 may be provided to protrude forward of the exhaustion apparatus compared to the exhaustion apparatus 1.

[0092] The second cooking appliance 3 may include at least one of a cooking appliance that generates heat for heating food using electricity and a cooking appliance that generates heat for heating food by burning gas.

[0093] For example, the second cooking appliance 3 may include a gas range, an induction heater, or a highlight.

[0094] The second cooking appliance 3 cooks food in a state exposed to the cooking area. Accordingly, during cooking of food using the second cooking appliance 3, odors, smoke, and harmful gases may be generated, and air existing in the cooking area may be contaminated by the odors, smoke, and harmful gases. That is, the second cooking appliance 3 may generate contaminated air during operation of the second cooking appliance 3.

[0095] The second cooking appliance 3 may perform communication with the exhaustion apparatus 1 and may also perform communication with the first cooking appliance 2.

[0096] The second cooking appliance 3 may transmit operation information of the second cooking appliance 3 to the exhaustion apparatus 1 and the first cooking appliance 2.

[0097] The second cooking appliance 3 may be connected to the exhaustion apparatus 1 and the first cooking appliance 2 through a network.

[0098] The network may include both wired networks and wireless networks. Wired networks include cable networks or telephone networks, etc., and wireless networks may include all networks that transmit and receive signals through radio waves. Wired networks and wireless networks may be connected to each other.

[0099] The network may include a wide area network (WAN), such as the Internet, a local area network (LAN) formed around an access point (AP), and a short-range wireless network that does not pass through an AP).

[0100] The short-range wireless network may include but is not limited to,

[0101] Bluetooth™ (IEEE 802.15.1), Zigbee (IEEE 802.15.4), Wi-Fi Direct, NFC (Near Field Communication), Z-Wave, etc. The AP may connect the second cooking appliance 3, the exhaustion apparatus 1, and the first cooking appliance 2 to a WAN to which a server (not shown) is connected.

[0102] The second cooking appliance 3, the exhaustion apparatus 1, and the first cooking appliance 2 may be connected to a server (not shown) through a WAN.

[0103] The AP may communicate with the second cooking appliance 3, the exhaustion apparatus 1, and the first cooking appliance 2 using wireless communications such as Wi-Fi™ (IEEE 802.11), Bluetooth™ (IEEE 802.15.1), Zigbee (IEEE 802.15.4), etc., and may connect to the WAN using wired communication, but is not limited thereto.

[0104] The cooking system may also further include a third cooking appliance 4 provided below the second cooking appliance 3. In this case, the third cooking appliance 4 may be provided on the floor surface of the cooking area of the room.

[0105] The third cooking appliance 4 may be provided integrally with the second cooking appliance 3 or may be provided detachably from the second cooking appliance 3.

[0106] The third cooking appliance 4 may include an oven.

[0107] FIG. 2 is a perspective view of a first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure, and will be described with reference to FIGS. 3 to 11, and FIGS. 12A and 12B.

[0108] In the embodiment of the present disclosure, the exhaustion apparatus 1 and the first cooking appliance 2 may be provided as one body. Components of the exhaustion apparatus 1 may be provided in the first cooking appliance 2. That is, the first cooking appliance 2 may be a microwave oven (OTR: Over The Range) equipped with the exhaustion apparatus 1. In the present disclosure, the structure of the exhaustion apparatus 1 and the first cooking appliance 2 provided as one body will be described.

[0109] The first cooking appliance 2 may include a main body 200 that forms the exterior.

[0110] The main body 200 may have a hexahedral shape. The main body 200 may have a hexahedral shape with an opening port formed on one surface.

[0111] The main body 200 includes a first panel 201 that forms the lower surface of the first cooking appliance 2, a second panel 202 that forms the upper surface of the first cooking appliance 2, a third panel 203 provided between the first panel 201 and the second panel 202 and connecting a first side of the first panel 201 and a first side of the second panel 202, a fourth panel 204 provided between the first panel 201 and the second panel 202 and connecting a second side of the first panel 201 and a second side of the second panel 202, and a fifth panel 205 provided between the first panel 201 and the second panel 202 and connecting a third side of the first panel 201 and a third side of the second panel 202.

[0112] The second panel 202 may include an exhaust port 202a to which an external exhaust pipe is connected. The exhaust port 202a provided in the second panel 202 may be a hole that guides drawn contaminated air to the exhaust pipe for discharge to the outside.

[0113] The first, second, third, fourth, and fifth panels 201, 202, 203, 204, and 205 may be provided integrally with each other or may be provided separately from each other.

[0114] The first, second, third, fourth, and fifth panels 201, 202, 203, 204, and 205 connected to each other may form an empty space.

[0115] The first cooking appliance 2 may include a cooking chamber 210 provided inside the main body 200, a door 220 that opens or closes the cooking chamber 210, and a control panel 230 that receives user input and displays operation information of the first cooking appliance.

[0116] The cooking chamber 210 may be formed in a hexahedral shape with an opening port formed on one surface.

[0117] The cooking chamber 210 may include a cooking chamber panel 211 that forms the cooking chamber. The cooking chamber panel 211 may be formed in a hexahedral shape with an opening port formed on one surface.

[0118] The cooking chamber 210 may include a tray (not shown) on which food is placed.

[0119] The tray may be provided on a lower surface among surfaces of the cooking chamber panel and may be provided in the central area of the lower surface of the cooking chamber panel 211. The tray may be provided rotatably and may be provided detachably from the cooking chamber panel 211. The tray may include a rotatable turntable.

[0120] The opening port of the main body 200 and the opening port of the cooking chamber 210 may be a location in which food is stored or retrieved. The opening port of the main body and the opening port of the cooking chamber may correspond to the front of the cooking chamber 210.

[0121] The door 220 may be provided on the front of the main body 200. The door 220 may be rotatably provided with respect to one side wall of the main body 200. That is, the door 220 may be provided to rotate to the left and right of the main body with respect to the main body.

[0122] The one side wall of the main body 200 may be the left wall, right wall, or lower wall of the main body 200.

[0123] The door 220 may include a handle (not shown) gripped by the user.

[0124] The door 220 may also be provided to slide up and down.

[0125] The door 220 may include a viewing window. The user may visually check the inside from outside the cooking chamber 210 in a state in which the cooking chamber 210 is closed through the viewing window of the door 220.

[0126] The control panel 230 may be provided on one side of the front of the main body 200.

[0127] The control panel 230 may be provided on one side of the door 220 and adjacent to the door 220. The control panel 230 may also be provided on the left or right side of the door 120.

[0128] The control panel 230 may provide a user interface for interaction between the user and the first cooking appliance 2. The user interface may include at least one input device and at least one output device.

[0129] The at least one input device may convert sensory information received from the user into electrical signals.

[0130] The at least one input device may include a power button, an operation button, a course selection dial (or a course selection button), a pause button, and an end button.

[0131] The at least one input device may include, for example, a keyboard, a mouse, a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone, etc.

[0132] The at least one output device may visually or audibly transmit information related to the operation of the first cooking appliance 2 to the user.

[0133] For example, the at least one output device may transmit information about a cooking course and an operation time of the first cooking appliance 2 to the user. The information about the operation of the first cooking appliance may be output as screens, indicators, voices, etc.

[0134] The at least one output device may include, for example, a display and a speaker, etc.

[0135] The display may be provided as a cathode ray tube (CRT), a digital light processing (DLP) panel, a plasma display panel, a liquid crystal display (LCD) panel, an electroluminescence (EL) panel, an electrophoretic display (EPD) panel, an electrochromic display (ECD) panel, a light emitting diode (LED) panel, or an organic light emitting diode (OLED) panel, etc., but is not limited thereto.

[0136] The first cooking appliance 2 may include an internal space 240 provided between the main body 200 and the cooking chamber panel 211.

[0137] The internal space 240 may include an exhaust room 241 in which components of the exhaustion apparatus are provided, and a machine room 242 in which the magnetron is provided.

[0138] As shown in FIG. 3, the exhaust room 241 may include a first space a1 provided between the first panel 201 and the cooking chamber panel 211, a second space a2 provided between the third panel 203 and the cooking chamber panel 211, a third space a3 provided between the fifth panel 205 and the cooking chamber panel 211, and may include a fourth space a4 provided between the fourth panel 204 and the cooking chamber panel 211.

[0139] For ease of explanation, the spaces are described separately, but the first space, second space, third space, and fourth space may be spaces connected to each other.

[0140] The fourth space a4 may be a partial space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211.

[0141] The exhaust room 241 may be a space for drawing in contaminated air and discharging the drawn contaminated air.

[0142] As shown in FIG. 3, among the spaces of the exhaust room 241, the spaces formed on the sides of the cooking chamber, that is, the second space a2, the third space a3, and the fourth space a4 may be separated into upper and lower spaces by separation panels 243, 244, and 245.

[0143] More specifically, the second space a2 may be separated into a lower space and an upper space by a first separation panel 243. The third space a3 may be separated into a lower space and an upper space by a second separation panel 244. The fourth space a4 may be separated into a lower space and an upper space by a third separation panel 245.

[0144] The lower spaces of the second space a2, the third space a3, and the fourth space a4 may be spaces in which contaminated air is drawn.

[0145] The upper spaces of the second space a2, the third space a3, and the fourth space a4 may be spaces that guide contaminated air drawn from each lower space to the exhaust port 202a.

[0146] The first separation panel 243, second separation panel 244, and third separation panel 245 may each be provided with a plurality of holes for movement of contaminated air.

[0147] A fourth separation panel 246 may be provided in the space provided between the cooking chamber panel 211 and the fourth panel 204. The space provided between the cooking chamber panel 211 and the fourth panel 204 may be separated into a front space and a rear space by the fourth separation panel 246 provided in the space. That is, the fourth space a4 may be a rear space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211.

[0148] The machine room 242 may include a fifth space a5 provided between the cooking chamber panel 211 and the fourth panel 204. The fifth space a5 may include the remaining space of the space provided between the cooking chamber panel 211 and the fourth panel 204. The fifth space a5 may be a front space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211. The fifth space a5 may be a central space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211.

[0149] The fifth space a5 may be a space adjacent to the fourth space a4.

[0150] A magnetron 250 that generates microwaves for heating food in the cooking chamber 210 may be provided in the machine room 242.

[0151] A HVT, a high voltage diode, and a high voltage capacitor 251 for providing high voltage to the magnetron may be further provided in the machine room 242.

[0152] The first cooking appliance 2 may further include one or more heaters (not shown) provided in the cooking chamber 210 and applying heat to food.

[0153] The first cooking appliance 2 may include components of the exhaustion apparatus for drawing in and exhausting contaminated air. The components of the exhaustion apparatus may be included in the components of the first cooking appliance.

[0154] As shown in FIG. 5, the first cooking appliance 2 may include a first fan 110 mounted on the first separation panel 243 of the second space a2.

[0155] The first fan 110 may include one or two first blades 111 and a first fan motor 112 that transmits rotational force to the one or two first blades 111.

[0156] When two first blades 111 are provided in the first fan 110, the two first blades 111 may be arranged parallel to the front-rear direction of the first cooking appliance 2 in the lower space of the second space a2.

[0157] When two first blades 111 are provided in the first fan 110, a first fan motor 112 may be provided between the two first blades 111. The shafts of the two first blades 111 may be connected to the first fan motor 112. The two first blades 111 may rotate in conjunction with each other by rotation of the first fan motor 112.

[0158] The first fan motor 112 may have two shafts extending in different directions. Each shaft of the first fan motor 112 may be connected to a respective shaft of the two first blades 111.

[0159] The first fan motor 112 allows contaminated air existing below or in front of a first suction part and a second suction part to be drawn in, and the drawn contaminated air to be discharged to the outside through the exhaust port 20a of the second panel 202 via the upper space of the second space a2 of the first cooking appliance 2.

[0160] The area below or in front of the first suction part and the second suction part may include the lower area or front area of the first cooking appliance 2.

[0161] The first fan 110 may be a centrifugal fan, an axial fan, or a turbo fan, and the type of the first fan is not limited thereto.

[0162] The first fan 110 may be any one type of fan among a backward type fan, an airfoil limit type fan, a radial plate type fan, and a Sirocco type fan, and the type of the first fan is not limited thereto.

[0163] As shown in FIGS. 3 and 4, the first cooking appliance 2 may include a second fan 120 mounted on the third separation panel 245 of the second space a4.

[0164] The second fan 120 may include a second blade 121 and a second fan motor 122 that transmits rotational force to the second blade 121.

[0165] The second fan 120 may be arranged parallel to the up-down direction of the first cooking appliance 2 in the lower space of the fourth space a4. The second fan 120 may be arranged perpendicular to the front-rear direction of the first cooking appliance 2 in the lower space of the fourth space a4.

[0166] The second blade 121 may be provided as one or two or more second blades.

[0167] The shafts of one or two or more second blades 121 may be connected to the shaft of the second fan motor 122.

[0168] The one or two or more second blades 121 may receive rotational force from the second fan motor 122 and rotate.

[0169] The second fan motor 122 allows contaminated air existing around the first suction part and second suction part to be drawn in, and the drawn contaminated air to be discharged to the outside through the exhaust port 20a of the second panel 202 via the upper space of the fourth space a4 of the first cooking appliance 2.

[0170] The second fan 120 may be a centrifugal fan, an axial fan, or a turbo fan, and the type of the second fan is not limited thereto.

[0171] The second fan 120 may be any one type of fan among a backward type fan, an airfoil limit type fan, a radial plate type fan, and a Sirocco type fan, and the type of the second fan is not limited thereto.

[0172] The first panel 201 of the first cooking appliance 2 may be formed in a flat plate shape.

[0173] The first panel 201 of the first cooking appliance 2 may include one, or two or more mounting holes.

[0174] As shown in FIG. 6, the two or more mounting holes may include a first mounting hole 201a, a second mounting hole 201b, and a third mounting hole 201c.

[0175] The first mounting hole 201a may be a hole provided in an area on the first side of a rear area PA1 of the first panel 201.

[0176] The second mounting hole 201b may be a hole provided in an area on the second side of a rear area PA1 of the first panel 201.

[0177] The rear area PA1 of the first panel 201 may be a first area of the first panel.

[0178] The third mounting hole 201c may be a hole provided in a front area PA2 of the first panel 201.

[0179] The front area PA2 of the first panel 201 may be a second area of the first panel. That is, the second area of the first panel may be an area located forward of the first area.

[0180] As shown in FIG. 7, the first cooking appliance 2 may further include a first suction part 130 provided in the rear area PA1 of the first panel 201, a second suction part 140 provided in the front area PA2 of the first panel 201, a drive assembly 150 provided in the central region of the rear area PA1 of the first panel 201, and a lighting device 160.

[0181] The first suction part 130 may draw in contaminated air from the first area of the first panel of the main body of the first cooking appliance 2.

[0182] The first suction part 130 may include one or more suction panels for drawing in contaminated air below the first cooking appliance 2. The embodiment will be described by way of example of a first suction part 130 including two suction panels.

[0183] The first suction part 130 may include a first suction panel 131 provided with a plurality of first suction holes sh1 and a second suction panel 132 provided with a plurality of second suction holes sh2.

[0184] The first suction panel 131 may be provided in the first mounting hole 201a of the first panel 201. The first suction panel 131 may be detachably provided in the first mounting hole 201a of the first panel 201.

[0185] The first suction part 130 may draw in contaminated air from the second area of the first panel of the main body of the first cooking appliance 2.

[0186] The second suction panel 132 may be provided in the second mounting hole 201b of the first panel 201. The first suction panel 131 may be detachably provided in the second mounting hole 201b of the first panel 201.

[0187] Contaminated air below the first cooking appliance 2 may be drawn through the plurality of first suction holes sh1 of the first suction panel 131 and the plurality of second suction holes sh2 of the second suction panel 132.

[0188] The second suction part 140 may be provided in the third mounting hole 201c of the first panel 201.

[0189] The second suction part 140 may be detachably provided in the third mounting hole 201c of the first panel 201.

[0190] The second suction part 140 may be provided adjacent to the door 220.

[0191] The second suction part 140 may draw in contaminated air existing around the door 220.

[0192] The second suction part 140 may draw in contaminated air existing in front of the main body.

[0193] The second suction part 140 may be provided to be titable in the third mounting hole 201c of the first panel 201. That is, the second suction part 140 may perform tilting rotation.

[0194] The second suction part 140 may have an intake port exposed to the outside of the main body 200 of the first cooking appliance 2 or have an intake port retracted into the main body 200 of the first cooking appliance according to the tilting rotation.

[0195] The exposure of the intake port to the outside of the main body (200) of the first cooking appliance (2) according to the tilting rotation may include protruding of the intake port to the outside of the main body (200) of the first cooking appliance (2).

[0196] The retraction of the intake port into the main body (200) of the first cooking appliance (2) according to the tilting rotation may include accommodating of the intake port in the interior of the main body (200) of the first cooking appliance (2).

[0197] When the intake port is exposed to the outside of the main body 200 of the first cooking appliance, the second suction part 140 may draw in contaminated air existing at a position adjacent to the door 220.

[0198] After the intake port is exposed to the outside of the main body 200 of the first cooking appliance, the flow of contaminated air drawn through the intake port of the second suction part may form a barrier wall in a front direction of the first cooking appliance.

[0199] The second suction part 140 may be provided as a tilting member that performs tilting rotation with one side as a rotation axis.

[0200] As shown in FIG. 8, the second suction part 140 may include a first guide panel 141, a second guide panel 142, and a third guide panel 143 for guiding suction of contaminated air.

[0201] The first guide panel 141 may be provided to extend from the first side to the second side of the main body 200 of the first cooking appliance 2. The first guide panel 141 may be provided to extend from the first side to the second side of the door 220 of the first cooking appliance 2.

[0202] The first guide panel 141 may have a plate shape. The first guide panel 141 may include a first edge 141a, a second edge 141b, a third edge 141c, and a fourth edge 141d.

[0203] The first edge 141a of the first guide panel 141 may be adjacent to the first suction part 130. The first edge 141a of the first guide panel 141 may serve as an axis of the first guide panel 141 during a tilting rotation of the first guide panel 141.

[0204] The second edge 141b of the first guide panel 141 may be adjacent to the door 220.

[0205] The second edge 141b of the first guide panel 141 may be a part that moves during a tilting rotation of the second suction part 140. The movement position of the second edge 141b of the first guide panel 141 may vary according to the tilting angle of the second suction part 140.

[0206] The third edge 141c of the first guide panel 141 may be adjacent to the first side of the main body 200 of the first cooking appliance 2.

[0207] The fourth edge 141d of the first guide panel 141 may be adjacent to the second side of the main body 200 of the first cooking appliance 2.

[0208] The third edge 141c and the fourth edge 141d of the first guide panel 141 may be parts that move during a tilting rotation of the second suction part 140.

[0209] The movement positions of the third edge 141c and the fourth edge 141d of the first guide panel 141 may vary according to the tilting angle of the second suction part 140.

[0210] The second guide panel 142 may be provided at the third edge 141c of the first guide panel 141.

[0211] The second guide panel 142 may be adjacent to the first side of the main body 200 and may be adjacent to the first side of the door 220.

[0212] The second guide panel 142 may be formed in a triangular shape.

[0213] The second guide panel 142 may be a part that moves during a tilting rotation of the second suction part 140. The size of the surface of the second guide panel 142 exposed to the outside of the main body 200 may vary according to the tilting angle of the second suction part 140.

[0214] The third guide panel 143 may be provided at the fourth edge 141d of the first guide panel 141.

[0215] The third guide panel 143 may be adjacent to the second side of the main body 200 and may be adjacent to the third side of the door 220.

[0216] The third guide panel 143 may be formed in a triangular shape. The third guide panel 143 may face the second guide panel 142.

[0217] The third guide panel 143 may be a part that moves during a tilting rotation of the second suction part 140. The size of the surface of the third guide panel 143 exposed to the outside of the main body may vary according to the tilting angle of the second suction part 140.

[0218] As shown in FIG. 9, the first, second, and third guide panels 141, 142 and 143 may be drawn out from the first panel 201 by being exposed to the outside of the main body 200 through a tilting rotation of the second suction part 140.

[0219] The first, second, and third guide panels 141, 142 and 143 may form an opening port, that is, an intake port 145, based on being exposed to the outside of the main body 200 by a tilting rotation of the second suction part 140.

[0220] The first, second, and third guide panels 141, 142 and 143 may allow the size of the intake port 145 to be adjusted based on control of the tilting angle of the second suction part 140.

[0221] The first, second, and third guide panels 141, 142 and 143 may guide the flow of contaminated air so that contaminated air existing around the front of the main body 200, that is, contaminated air existing around the door 220, may be drawn into the intake port 145.

[0222] The amount of contaminated air drawn into the second suction part 140 may be adjusted based on size adjustment of the intake port 145 of the first, second, and third guide panels 141, 142, and 143.

[0223] The first cooking appliance 2 may further include a duct connected to the second suction part 140 and a damper provided inside the duct.

[0224] When a duct and a damper are provided in the first cooking appliance, as an example, the first cooking appliance 2 may adjust the opening degree of the intake port of the second suction part 140, control opening of the damper based on the second suction part 140 being exposed to the outside of the main body, and control closing of the damper based on the second suction part 140 being accommodated inside the main body.

[0225] When a duct and a damper are provided in the first cooking appliance, as another example, the first cooking appliance 2 may control a tilting rotation of the first suction part so that the opening degree of the intake port of the second suction part 140 reaches a preset opening degree based on the second suction part 140 being exposed to the outside of the main body, control the opening degree of the damper based on the contamination level, and control closing of the damper based on the second suction part 140 being accommodated inside the main body.

[0226] When a duct and a damper are provided in the first cooking appliance, as yet another example, the first cooking appliance 2 may control a tilting rotation of the second suction part 140 based on the second suction part 140 being exposed to the outside of the main body so that the opening degree of the intake port is adjusted and the opening degree of the damper is adjusted based on the contamination level.

[0227] The second suction part 140 may further include a lighting hole 144.

[0228] A lighting device 160 may be provided in the lighting hole 144 for guiding whether an exhaust operation is performed. The lighting device 160 may be turned on based on an exhaust operation being performed and may be turned off based on an exhaust operation not being performed.

[0229] The lighting device 160 may be fixedly mounted to the second suction part 140. The lighting device 160 may also be detachably provided in the lighting hole 144.

[0230] As shown in FIG. 10, the drive assembly 150 may be provided in the central area of the first panel 201. The drive assembly 150 may be provided between the first suction panel 131 and the second suction panel 132.

[0231] The drive assembly 150 may apply a force to the lighting device 160 fixed to the second suction part 140 to perform a tilting rotation on the second suction part 140.

[0232] More specifically, when the drive assembly 150 applies a force to the lighting device 160, the force applied to the lighting device 160 may be transmitted to the first guide panel 141 of the second suction part 140. Then, due to the force transmitted to the first guide panel 141 of the second suction part 140, the second edge moves about the first edge as an axis, and the second and third guide panels 142 and 143 fixed to the first guide panel 141 also move together. Accordingly, the second and third guide panels 142 and 143 of the second suction part may be exposed to the outside of the main body 200, and an intake port may be formed by the exposure of the second and third guide panels 142 and 143.

[0233] As shown in FIG. 11, the drive assembly 150 may include a drive motor 151, a first gear 152, a second gear 153, a connecting rod 154, and a push member 155.

[0234] The drive motor 151 may generate a rotational force for driving.

[0235] The drive motor 151 may rotate in a first rotation direction or rotate in a second rotation direction. The first rotation direction may be opposite to the second rotation direction. For example, when the first rotation direction is clockwise, the second rotation direction may be a counterclockwise direction. As another example, when the first rotation direction is a counterclockwise direction, the second rotation direction may be a clockwise direction.

[0236] The first gear 152 is connected to the shaft of the drive motor 151 and may rotate in conjunction with the rotation of the drive motor 151. The first gear 152 may rotate in the first rotation direction by the drive motor 151 rotating in the first rotation direction, and may rotate in the second rotation direction by the drive motor 151 rotating in the second rotation direction.

[0237] The first gear 152 may be a pinion gear having a circular shape and having first teeth formed on the outer circumferential surface thereof.

[0238] The second gear 153 may be connected to the first gear 152.

[0239] The second gear 153 may be a rack gear having a linear shape and having second teeth formed on at least one surface.

[0240] The second teeth of the second gear 153 may mesh with the first teeth of the first gear 152. Accordingly, the second gear 153 may receive power by the rotation of the first gear 152.

[0241] The second gear 153 may perform a translational motion by the rotational force of the first gear 152.

[0242] The second gear 153 may perform a linear movement in a first direction by the first gear 152 rotating in the first rotation direction, and may perform a linear movement in a second direction by the first gear 152 rotating in the second rotation direction.

[0243] In the embodiment, the first rotation direction may be a counterclockwise direction. The second rotation direction may be a clockwise direction.

[0244] The linear motion in the first direction may include moving from the rear to the front of the first cooking appliance.

[0245] The linear motion in the second direction may include moving from the front to the rear of the first cooking appliance.

[0246] Although the drive assembly 150 includes first and second gears that convert the rotational motion of the drive motor 151 into linear motion, components for converting the rotational motion of the drive motor into linear motion are not limited thereto.

[0247] For example, the drive assembly 150 may include a cam that converts the rotational motion of the drive motor 151 into linear motion.

[0248] The connecting rod 154 may be connected to the second gear 153.

[0249] The connecting rod 154 may be connected to the end of the second gear 153 and may be fixedly provided.

[0250] The connecting rod 154 may move in conjunction with the movement of the second gear 153.

[0251] When the second gear 153 moves linearly in the first direction, the connecting rod 154 may perform a linear motion in the first direction by the moving force of the second gear 153.

[0252] When the second gear 153 moves linearly in the second direction, the connecting rod 154 may perform a linear motion in the second direction by the moving force of the second gear 153.

[0253] The push member 155 may be connected to the connecting rod 154.

[0254] The push member 155 may be connected to the end of the connecting rod 154 and may be fixedly provided.

[0255] The push member 155 may move in conjunction with the movement of the connecting rod 154.

[0256] When the connecting rod 154 moves linearly in the first direction, the push member 155 may perform a linear motion in the first direction by the moving force of the connecting rod 154.

[0257] When the connecting rod 154 moves linearly in the second direction, the push member 155 may perform a linear motion in the second direction by the moving force of the connecting rod 154.

[0258] The push member 155 may be provided to be contactable with the lighting device 160. The push member 155 may be provided to contact the middle area or upper area of the body of the lighting device 160.

[0259] The push member 155 may also be fixedly provided on the lighting device 160. The push member 155 may also be fixedly provided on the middle area or upper area of the body of the lighting device 160.

[0260] When a moving force in the first direction is applied from the connecting rod 154, the push member 155 may transmit the moving force in the first direction to the lighting device 160, and when a moving force in the second direction is applied from the connecting rod 154, the push member 155 may transmit the moving force in the second direction to the lighting device 160.

[0261] The push member 155 may apply a force in the first direction to the lighting device 160 or apply a force in the second direction to the lighting device 160.

[0262] When applying a force in the first direction to the lighting device 160, the push member 155 may apply a force to the middle area or upper area of the body of the lighting device 160.

[0263] The push member 155 may also remove the force applied in the first direction to the lighting device 160.

[0264] When a force in the first direction is applied from the push member 155, the lighting device 160 may transmit the applied force in the first direction to the first guide panel 141.

[0265] Since the lighting device 160 and the first guide panel 141 are fixed to each other, the force in the first direction applied to the lighting device 160 may be transmitted to the first guide panel 141 as it is.

[0266] Since the first edge 141a of the first guide panel 141 is fixed, when a force in the first direction is applied, the applied force may allow the first guide panel 141 to move in a direction in which there is no restraining force or a direction in which the restraining force is weaker than the applied force.

[0267] Here, the direction in which there is no restraining force or the direction in which the restraining force is weaker than the applied force may be a direction corresponding to the outside of the main body 200.

[0268] That is, when a force in the first direction is applied to the lighting device 160 and the first guide panel 141, the force may cause the second edge to move about the first edge 141a of the first guide panel 141 as an axis.

[0269] As shown in FIG. 12A, the drive assembly 150 causes the second gear 153 to move linearly in the first direction by rotating the drive motor 151 and the first gear 152 in the first rotation direction, causes the connecting rod 154 and the push member 155 to move in the first direction by the linear movement of the second gear 153, and applies a force to the lighting device 160 by the movement of the connecting rod 154 and the push member 155.

[0270] The drive assembly 150 may apply a force F1 in the first direction to the lighting device 160 to cause the second and third guide panels 142 and 143 of the second suction part to be exposed to the outside of the main body 200. In this case, the intake port 145 may be formed by the exposure of the second and third guide panels 142 and 143 of the second suction part.

[0271] As shown in FIG. 12B, the drive assembly 150 causes the second gear 153 to move linearly in the second direction by rotating the drive motor 151 and the first gear 152 in the second rotation direction, causes the connecting rod 154 and the push member 155 to move in the second direction by the linear movement of the second gear 153, and applies a force to the lighting device 160 by the movement of the connecting rod 154 and the push member 155.

[0272] The drive assembly 150 applies a force F2 in the second direction to the lighting device 160 to cause the second and third guide panels 142 and 143 of the second suction part to be accommodated inside the main body 200.

[0273] As shown in FIG. 11, the first cooking appliance 2 may further include a position sensor 156 for detecting the position of the second gear 153.

[0274] The position of the second gear 153 may include a movement distance or a movement amount of the second gear 153.

[0275] The movement distance of the second gear 153 may include a movement distance of the connecting rod 154.

[0276] The movement distance of the second gear 153 may correspond to the rotation angle of the drive motor 151.

[0277] The position sensor 156 may include a Hall sensor. In this case, the position sensor 156 may detect a signal generated by the second teeth of the second gear 153 and transmit the detected signal to the controller. The signal generated by the second teeth may be a signal for identifying the position of the second gear 153.

[0278] The position sensor 156 may also include an optical sensor and an ultrasonic sensor.

[0279] Unlike the embodiment, when the exhaustion apparatus is provided separately from the first cooking appliance, the exhaustion apparatus may include a first main body, a first fan, a second fan, a first suction part, a second suction part, a drive assembly, and a lighting device, and may further include a control panel. In addition, the first cooking appliance may include a second main body provided separately from the exhaustion apparatus, a cooking chamber provided in the second main body, a door, and a magnetron.

[0280] FIG. 13 is a control block diagram of a first cooking appliance equipped with an exhaustion apparatus according to an embodiment of the present disclosure.

[0281] The first cooking appliance 2 may include a first fan motor 112, a second fan motor 122, a drive motor 151, a position sensor 156, a lighting device 160, a control panel 230, a magnetron 250, a contamination level sensor 260, a communication device 270, and a controller 280.

[0282] The first fan motor 112 may draw in contaminated air existing below and in front of the first cooking appliance 2. The contaminated air may be air contaminated by cooking food through the second cooking appliance 2.

[0283] The first fan motor 112 may rotate or stop based on control commands from the controller 280.

[0284] The first fan motor 112 may rotate at a rotation speed corresponding to control commands from the controller 280.

[0285] The second fan motor 122 may draw in contaminated air existing below and in front of the first cooking appliance 2.

[0286] The second fan motor 122 may rotate or stop based on control commands from the controller 280.

[0287] The second fan motor 122 may rotate at a rotation speed corresponding to control commands from the controller 280.

[0288] The drive motor 151 may cause a tilting rotation of the second suction part 140 to be performed by operating the drive assembly 150. The drive motor 151 may cause the second suction part 140 to be exposed to the outside of the main body 200 of the first cooking appliance or cause the second suction part 140 to be accommodated inside the main body 200 of the first cooking appliance by operating the drive assembly 150.

[0289] The drive motor 151 may rotate or stop based on control commands from the controller 280.

[0290] The drive motor 151 may rotate in a rotation direction corresponding to control commands from the controller 280. Here, the rotation direction may include a first rotation direction and a second rotation direction opposite to the first rotation direction.

[0291] The drive motor 151 may apply a rotational force to the first gear 152 of the drive assembly 150 during rotation.

[0292] The drive motor 151 may cause the first gear 152 of the drive assembly 150 to rotate in the first rotation direction or cause the first gear 152 of the drive assembly 150 to rotate in the second rotation direction.

[0293] The drive motor 151 may rotate at a rotation angle corresponding to control commands from the controller 280. The second gear 153, the connecting rod 154, and the push member 155 of the drive assembly may move by a movement distance corresponding to the rotation angle of the drive motor 151.

[0294] The position sensor 156 may detect the position of the second gear 153 and transmit position information corresponding to the detected position to the controller 280.

[0295] The position of the second gear 153 may be the movement distance of the second gear.

[0296] The movement distance of the second gear 153 may correspond to the rotation angle of the drive motor 151.

[0297] The position of the second gear 153 may be the movement distance of the connecting rod 152.

[0298] The lighting device 160 may include one or more lamps.

[0299] The lighting device 160 may turn on one or more lamps or turn off one or more lamps based on control commands from the controller 280.

[0300] The lighting device 160 may turn on one or more lamps in response to the operation of the first and second fan motors 112 and 122, or turn off one or more lamps in response to the stopping of the first and second fan motors 112 and 122.

[0301] The control panel 230 may provide a user interface for interaction between the user and the first cooking appliance 2. The control panel 230 may include an input device 231 and an output device 232.

[0302] The input device 231 may transmit input information corresponding to user input to the controller 280.

[0303] The user input may include cooking start commands, cooking end commands, and pause commands.

[0304] The user input may include information related to food cooking. For example, the user input may include cooking mode information, target cooking temperature information, and cooking time information.

[0305] The user input may include exhaust information for discharging contaminated air. For example, the user input may include an automatic exhaust mode, a manual exhaust mode, and an exhaust level.

[0306] The automatic exhaust mode and the manual exhaust mode may have the same meaning as an automatic intake mode and a manual intake mode, and may have the same meaning as an automatic ventilation mode and a manual ventilation mode. The exhaust level may have the same meaning as an intake level or a ventilation level.

[0307] The output device 232 may output operation information of the first cooking appliance corresponding to control commands from the controller 280 visually and audibly so that the user may recognize the operation information.

[0308] The operation information of the first cooking appliance may include information about a cooking status, a cooking pause status, a cooking end status, a cooking mode, a target cooking temperature, a total cooking time, and a remaining cooking time, and may include information about a current exhaust mode and a current exhaust level.

[0309] The output device 232 may include at least one of a display that displays operation information of the first cooking appliance and a speaker that outputs operation information of the first cooking appliance as sound or voice.

[0310] The magnetron 250 may be turned on or off based on control commands from the controller 280.

[0311] The magnetron 250 may generate microwaves based on control commands from the controller 280.

[0312] The contamination level sensor 260 may detect the contamination level of contaminated air and transmit contamination level information about the detected contamination level to the controller 280.

[0313] The contamination level sensor 260 may be provided as one or more contamination level sensors. The two or more contamination level sensors may be the same type of contamination level sensor or different types of contamination level sensors.

[0314] The contamination level sensor 260 may include at least one of a volatile organic compounds (VOC) sensor, a particulate matter (PM) sensor, and a gas sensor.

[0315] The gas sensor may detect at least one gas among carbon monoxide, carbon dioxide, methane, hydrogen, ammonia, hydrogen sulfide, alcohol, methane, and formaldehyde, and the types of gases detected by the gas sensor are not limited thereto.

[0316] The contamination level sensor 260 may further include a humidity sensor that detects humidity in the cooking area below the first cooking appliance.

[0317] The first cooking appliance 2 may further include one or more temperature sensors for detecting the temperature of the cooking area below the first cooking appliance.

[0318] The first cooking appliance 2 may further include an image sensor 261 for obtaining images of the cooking area below the first cooking appliance.

[0319] The image sensor may further include at least one of a CCD sensor, CMOS sensor, thermal imaging sensor, and color sensor (or RGB sensor).

[0320] The thermal imaging sensor may include a thermal imaging camera.

[0321] In the case of the thermal imaging sensor, the thermal imaging sensor may detect the amount of infrared radiant heat from contaminated air and food below the first cooking appliance, convert the detected amount of infrared radiant heat to a color corresponding to the detected amount of infrared radiant heat to obtain a thermal image, and transmit the obtained thermal images to the controller 280.

[0322] When obtaining thermal images, the thermal imaging sensor may convert each amount of radiant heat to a corresponding predetermined color.

[0323] The communication device 270 may include various communication circuits for performing wired communication and / or wireless communication with external devices (e.g., a server, a second cooking appliance).

[0324] The communication device 270 may include at least one of a short-range communication circuit or a long-range communication circuit.

[0325] The communication device 270 may transmit data to external devices or receive data from external devices. For example, the communication device 270 may support cellular communication, wireless local area network, Home Radio Frequency (Home RF), infrared communication, Ultra-wide band (UWB) communication, Wi-Fi, Wi-Fi Direct, Bluetooth, AD-HOC, and / or Zigbee. The communication technologies supported by the communication device 270 are not limited to those illustrated.

[0326] The communication device 270 may also communicate with external devices through an access point (AP).

[0327] The communication device 270 may also receive information about the second cooking appliance from the second cooking appliance 3 in response to control commands from the controller 280 and transmit the received information of the second cooking appliance to the controller 280.

[0328] The information about the second cooking appliance may include position information of cooking zones in which food is being cooked.

[0329] The first cooking appliance 2 may also further include one or more heaters (not shown) that apply heat to the cooking chamber 310.

[0330] The controller 280 may be electrically connected to various components of the first cooking appliance equipped with the exhaustion apparatus and may control the various components. That is, the controller 280 may control the overall operation of the first cooking appliance 2 equipped with the exhaustion apparatus.

[0331] The controller 280 may control the operation of the first cooking appliance 2 based on an user input received by the input device 231.

[0332] The controller 280 may control the operation of the magnetron 250 based on a cooking start command received through the input device 231.

[0333] When controlling the magnetron 250, the controller 280 may control a high voltage transformer that applies a high voltage to the magnetron 250.

[0334] The controller 280 may control the output of the magnetron 250 based on a target cooking temperature received through the input device 231, and may determine the operation time of the magnetron based on a cooking time received through the input device 231.

[0335] The controller 280 may stop and control the operation of the magnetron 250 based on a cooking pause command or a cooking end command received through the input device 31.

[0336] When one or more heaters are provided in the first cooking appliance 2, the controller 280 may also control the one or more heaters based on cooking mode information and cooking start commands received through the input device 231.

[0337] The controller 280 may control the output device 232 so that output information related to the operation of the first cooking appliance 2 is output.

[0338] The controller 280 may control the output device 232 to output information about a cooking mode, a target cooking temperature, and a cooking time.

[0339] The controller 280 may control the output device 232 to output on / off information of exhaust mode, a current exhaust mode, and a current exhaust level.

[0340] The controller 280 may recognize the contamination level of contaminated air based on contamination level information received from the contamination level sensor 260.

[0341] When a plurality of contamination level sensors are provided, the controller 280 may recognize at least one contamination level sensor having detected a contamination level of contaminated air that is equal to or higher than a reference contamination level based on contamination level information received from the plurality of contamination level sensors 260, and may control exhaust based on the contamination level information received from the identified at least one contamination level sensor.

[0342] The plurality of contamination level sensors may be the same type of contamination level sensor or different types of contamination level sensors.

[0343] When a plurality of different types of contamination level sensors are provided, the controller 280 may recognize comprehensive contamination level information based on pieces of contamination level information received from the plurality of contamination level sensors 260, and may control exhaust based on the identified comprehensive contamination level information.

[0344] For example, the controller 280 may assign scores corresponding to contamination level information received from each contamination level sensor and recognize comprehensive contamination level information by summing the assigned scores.

[0345] The controller 280 may recognize the rotation angle of the drive motor 151 based on position information received from the position sensor 156.

[0346] The controller 280 may recognize the tilting angle of the second suction part based on position information received from the position sensor 156.Manual Exhaust Mode Control

[0347] The controller 280 may, upon an exhaust On-command being received through the input device 231, identify the exhaust mode received through the input device 231, identify the exhaust level received through the input device 231 based on the identified exhaust mode being a manual exhaust mode, control lighting of the lighting device 160 based on the identified exhaust level, control the rotation speed of the first and second fan motors 112 and 122, and control a tilting rotation of the second suction part 140.

[0348] When controlling the tilting rotation of the second suction part, the controller 280 may control the rotation angle of the drive motor 151.

[0349] The controller 280 may form a barrier wall (or an air curtain) by the flow of contaminated air in the front direction of the first cooking appliance by causing contaminated air to be drawn through the intake port of the second suction part after the intake port of the second suction part protrudes outside the main body 200 of the first cooking appliance through a tilting rotation of the second suction part.

[0350] More specifically, the controller 280 may control the first and second fan motors 112 and 122 at a first rotation speed based on the received exhaust level being a first exhaust level, and may control the first and second fan motors 112 and 122 at a second rotation speed based on the received exhaust level being a second exhaust level.

[0351] Here, the second rotation speed may be faster than the first rotation speed. The second exhaust level may be a higher level than the first exhaust level.

[0352] The controller 280 may control an operation of closing the intake port 145 of the second suction part 140 based on the received exhaust level being the first exhaust level or the second exhaust level.

[0353] That is, when the received exhaust level is the first exhaust level or the second exhaust level, the controller 280 causes the intake port 145 of the second suction part 140 to be accommodated inside the main body.

[0354] The first rotation speed of the first fan motor 112 and the first rotation speed of the second fan motor 122 may be the same or different. The embodiment describes an example of controlling the rotation speeds of the first and second fan motors 112 and 122 to be the same based on the exhaust level.

[0355] The controller 280 may control the first and second fan motors 112 and 122 at a second rotation speed based on the received exhaust level being a third exhaust level, and may control the drive motor 151 so that the intake port 145 of the second suction part 140 is exposed to the outside of the main body 200.

[0356] That is, the controller 280 may control the rotation angle of the drive motor 151 so that the tilting angle of the second suction part 140 reaches a preset tilting angle based on the received exhaust level being the third exhaust level. Here, the preset tilting angle may be the maximum tilting angle.

[0357] The controller 280 may also control the first and second fan motors 112 and 122 at a third rotation speed and control the rotation angle of the drive motor 151 so that the tilting angle of the second suction part 140 reaches a preset tilting angle based on the received exhaust level being the third exhaust level. The third rotation speed may be a rotation speed faster than the second rotation speed.

[0358] When there are exhaust levels higher than the third exhaust level, the controller 280 may also adjust the tilting angle of the second suction part 140 based on the received exhaust level when the received exhaust level is equal to or higher than a preset exhaust level.

[0359] Here, the preset exhaust level may be the third exhaust level. Exhaust levels equal to or higher than the preset exhaust level may include a third exhaust level, a fourth exhaust level, and a fifth exhaust level. The fourth and fifth exhaust levels are only examples of the embodiment, and the number of exhaust levels is not limited thereto.

[0360] More specifically, when the received exhaust level is the third exhaust level, the controller 280 may control the rotation angle of the drive motor 151 to a first rotation angle so that the tilting angle of the second suction part 140 reaches a first tilting angle, when the received exhaust level is the fourth exhaust level, the controller 280 may control the rotation angle of the drive motor 151 to a second rotation angle so that the tilting angle of the second suction part 140 reaches a second tilting angle, and when the received exhaust level is the fifth exhaust level, the controller 280 may control the rotation angle of the drive motor 151 to a third rotation angle so that the tilting angle of the second suction part 140 reaches a third tilting angle.

[0361] The third tilting angle may be larger than the second tilting angle. The second tilting angle may be larger than the first tilting angle.

[0362] As the tilting angle increases, the opening degree of the intake port of the second suction part may increase.

[0363] That is, when the received exhaust level is the third exhaust level, fourth exhaust level, or fifth exhaust level, the controller 280 may only adjust the tilting angle of the second intake port and control the rotation speeds of the first and second fan motors 112 and 122 to be the same as the third rotation speed.

[0364] When the received exhaust level is the third exhaust level, fourth exhaust level, or fifth exhaust level, the controller 280 may adjust the tilting angle of the second intake port and also adjust the rotation speeds of the first and second fan motors 112 and 122 based on the received exhaust level.

[0365] More specifically, when the received exhaust level is the third exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 to the third rotation speed, when the received exhaust level is the fourth exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 to the fourth rotation speed, and when the received exhaust level is the fifth exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the fifth rotation speed.

[0366] Here, the fifth rotation speed may be faster than the fourth rotation speed. The fourth rotation speed may be faster than the third rotation speed. The third rotation speed may be faster than the second rotation speed.

[0367] The controller 280 may, based on an exhaust OFF-command being received through the input device 231, control the first and second fan motors 112 and 122 to stop rotating and control the drive motor 151 so that the second suction part is accommodated inside the main body.

[0368] The controller 280 may, based on an exhaust OFF-command being received through the input device 231, control the lighting device 160 to be turned off.Automatic Exhaust Mode ControlExample 1

[0369] The controller 280 may, upon an exhaust ON-command being received through the input device 231, identify the exhaust mode received through the input device 231, and based on the identified exhaust mode being an automatic exhaust mode, determine the exhaust level based on at least one of contamination level information received from the contamination level sensor 260, image information received from the image sensor 261, or cooking information of the second cooking appliance 3 received through the communication device 270, and may control the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151 based on the determined exhaust level.

[0370] The controller 280 may control lighting of the lighting device 160 based on the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151, and may control the lighting device 160 to be turned off based on stopping of the first and second fan motors 112 and 122 and the drive motor 151.

[0371] The controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance based on at least one of image information received from the image sensor 261, cooking information of the second cooking appliance received from the communication device 270, and contamination level information received from a plurality of contamination level sensors 260a and 260b, and control exhaust based on position information of the identified cooking zone. This will be described with reference to FIGS. 14, 15, and 16.

[0372] As shown in FIG. 14, the controller 280 may identify a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance based on image information received from the image sensor 261, control the rotation speeds of the first and second fan motors 112 and 122 based on position information of the identified cooking zone, and may additionally control the tilting angle An of the second suction part 140 based on position information of the identified cooking zone.

[0373] The controlling of the tilting angle of the second suction part 140 may include controlling the rotation angle of the drive motor 151.

[0374] The image information received from the image sensor 261 may include thermal image information received from a thermal imaging sensor.

[0375] The controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance 3 based on temperature information received from a plurality of temperature sensors.

[0376] As shown in FIG. 15, the controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area based on cooking information of the second cooking appliance received from the communication device 270, control the rotation speeds of the first and second fan motors 112 and 122 based on position information of the identified cooking zone, and additionally control the tilting angle An of the second suction part 140 based on position information of the identified cooking zone.

[0377] As shown in FIG. 16, when a plurality of contamination level sensors 260a and 260b are provided, the controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance based on contamination level information received from the plurality of contamination level sensors 260a and 260b, control the rotation speeds of the first and second fan motors 112 and 122 based on position information of the identified cooking zone, and additionally control the tilting angle An of the second suction part 140 based on position information of the identified cooking zone.

[0378] For example, when the identified cooking zone is in the front area of the cooking area, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 and control the tilting angle of the second suction part 140, and when the identified cooking zone is in the rear area of the cooking area, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 and control the tilting angle of the second suction part 140 to 0 degrees.

[0379] The opening degree of the intake port 145 of the second suction part 140 may be controlled by controlling the tilting angle An of the second suction part 140.

[0380] When controlling the rotation speeds of the first and second fan motors 112 and 122, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 to the second rotation speed when the identified cooking zone is in the front area of the cooking area,, may control the rotation speeds of the first and second fan motors 112 and 122 to the first rotation speed when the identified cooking zone is in the rear area of the cooking area, and may control the rotation speeds of the first and second fan motors 112 and 122 to the second rotation speed when the identified cooking zone is in both the front area and rear area of the cooking area.

[0381] When controlling the tilting angle of the second suction part 140, the controller 280 may also adjust the tilting angle based on the contamination level detected by the contamination level sensor 260. The opening degree of the intake port 145 of the second suction part 140 may be adjusted by adjusting the tilting angle An of the second suction part 140.

[0382] For example, the controller 280 may adjust the tilting angle to a first tilting angle when the contamination level detected by the contamination level sensor 260 is within a first reference contamination level range,, may adjust the tilting angle to a second tilting angle when the contamination level detected by the contamination level sensor 260 is within a second reference contamination level range, and may adjust the tilting angle to a third tilting angle when the contamination level detected by the contamination level sensor 260 is within a third reference contamination level range.

[0383] The embodiment may optimize suction and discharge capability by simultaneously drawing in contaminated air through the first and second suction parts when a cooking zone is present in the front area of the cooking area of the second cooking appliance, and intensively drawing in contaminated air through the first suction part when a cooking zone is present in the rear area of the cooking area of the second cooking appliance.Automatic Exhaust Mode ControlExample 2

[0384] The controller 280 may identify a contamination level of contaminated air based on contamination level information received from the contamination level sensor 260, determine the exhaust level based on the identified contamination level of contaminated air and a plurality of reference contamination level ranges, control the rotation speeds of the first and second fan motors 112 and 122 based on the determined exhaust level, and may control the tilting angle of the second suction part 140 based on the determined exhaust level.

[0385] For example, the plurality of reference contamination level ranges may include a first reference contamination level range, a second reference contamination level range, and a third reference contamination level range.

[0386] Contamination levels within the second reference contamination level range may be values lower than contamination levels within the third reference contamination level range and higher than contamination levels within the first reference contamination level range.

[0387] For example, when the identified contamination level of contaminated air is less than the minimum value of the first reference contamination level range, the controller 280 may control the first and second fan motors 112 and 122 to stop operating and control the drive motor 151 to stop operating.

[0388] For example, when the identified contamination level of contaminated air falls within the first reference contamination level range, the controller 280 may determine the exhaust level as the first exhaust level, when the identified contamination level of contaminated air falls within the second reference contamination level range, may determine the exhaust level as the second exhaust level, and when the identified contamination level of contaminated air falls within the third reference contamination level range, may determine the exhaust level as the third exhaust level.

[0389] For example, when the determined exhaust level is the first exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the first rotation speed and control the drive motor 151 to stop. When the determined exhaust level is the second exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the second rotation speed and control the drive motor 151 to step. When the determined exhaust level is the third exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the second rotation speed and control the rotation angle of the drive motor 151 to a preset rotation angle.

[0390] The controller 280 may also control the rotation speeds of the first and second fan motors 112 and 122 at the third rotation speed and control the rotation angle of the drive motor 151 to a preset rotation angle when the determined exhaust level is the third exhaust level. The preset rotation angle of the drive motor 151 may correspond to a preset tilting angle of the second suction part.Automatic Exhaust Mode ControlExample 3

[0391] The controller 280 may identify the state of the contamination level as an increasing state of contamination level based on an increase in the contamination level of air contamination being greater than a first reference value, and may identify the state of the contamination level as a decreasing state of contamination level based on a decrease in the contamination level of air contamination being greater than or equal to a second reference value. The controller 280 may identify the state of the contamination level as a maintained state of contamination level based on an increase in the contamination level of air contamination being less than the first reference value or a decrease in the contamination level of contaminated air being less than the second reference value.

[0392] The first reference value may include a first contamination level value or an increase rate of contamination level.

[0393] The second reference value may include a second contamination level value or a decrease rate of contamination level.

[0394] The controller 280 may determine the exhaust level for automatic exhaust control based on whether the identified contamination level of contaminated air is in an increasing state, maintained state, or decreasing state, may control the rotation speeds of the first and second fan motors 112 and 122 based on the determined exhaust level, and may control the tilting angle of the second suction part 140 based on the determined exhaust level.

[0395] The controlling of the tilting angle of the second suction part 140 may include controlling the rotation angle of the drive motor 151.

[0396] The controller 280 may recognize the rotation angle of the drive motor 151 based on position information received from the position sensor 156, and may control the drive motor 151 to maintain or stop the rotation thereof based on the identified rotation angle of the drive motor 151 so that the rotation angle of the drive motor 151 reaches a preset rotation angle.

[0397] The preset rotation angle may be a reference rotation angle of the drive motor.

[0398] Hereinafter, the configuration for controlling automatic exhaust in response to an increase and decrease of contamination level will be described in more detail.

[0399] The controller 280 may, based on an automatic exhaust mode being received through the input device 231, monitor contamination level information received from the contamination level sensor 260.

[0400] The controller 280 may identify whether the contamination level of the cooking area is equal to or higher than a reference contamination level based on the contamination level information received from the contamination level sensor 260.

[0401] The reference contamination level may be a contamination level for controlling on / off of a standby mode.

[0402] The controller 280 may control to enter a standby mode based on identifying that the contamination level of the cooking area is less than the reference contamination level. The standby mode may include stopping the first and second fan motors 112 and 122 and controlling the tilting angle of the second suction part at 140 to 0 degrees.

[0403] The controlling of the tilting angle of the second suction part at 140 to 0 degrees may include causing the intake port of the second suction part 140 to be accommodated inside the main body of the first cooking appliance.

[0404] The controlling of the tilting angle of the second suction part at 140 to 0 degrees may include controlling the intake port 145 of the second suction part 140 to be in a closed state.

[0405] The controller 280 may determine the exhaust level as the first exhaust level based on identifying that the contamination level of the cooking area is equal to or higher than the reference contamination level.

[0406] The controller 280 may control the exhaust level starting from the lowest first exhaust level at the time when the contamination level of the cooking area is identified as being equal to or higher than the reference contamination level. Through this, the first cooking appliance may gradually draw in contaminated air from the cooking area.

[0407] While performing automatic exhaust control at the determined exhaust level, the controller 280 may identify whether the contamination level of contaminated air in the cooking area is in an increasing state, a maintained state, or a decreasing state based on contamination level information received from the contamination level sensor 260.

[0408] While performing automatic exhaust control at the determined exhaust level, the controller 280 may recognize an exhaust level one level higher than the determined exhaust level and change the determined exhaust level to the recognized exhaust level based on the contamination level of contaminated air being identified as an increasing state. For example, when the determined exhaust level is the first exhaust level, the controller 280 may change the determined first exhaust level to the second exhaust level.

[0409] While performing automatic exhaust control at the determined exhaust level, the controller 280 may control the determined exhaust level to be maintained, based on the contamination level of contaminated air being identified as a maintained state. For example, when the determined exhaust level is the first exhaust level, the controller 280 may control the exhaust level for automatic exhaust control to be maintained as the first exhaust level.

[0410] While performing automatic exhaust control at the determined exhaust level, the controller 280 may recognize an exhaust level one level lower than the determined exhaust level and change the determined exhaust level to the recognized exhaust level based on the contamination level of contaminated air being identified as a decreasing state. For example, when the determined exhaust level is the second exhaust level, the controller 280 may change the determined second exhaust level to the first exhaust level.

[0411] The controller 280 may control the first and second fan motors 112 and 122 at the first rotation speed and may control the tilting angle of the second suction part 140 to 0 degrees based on the determined exhaust level being the first exhaust level.

[0412] The controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to 0 degrees based on the determined exhaust level being the second exhaust level.

[0413] Here, the second rotation speed may be faster than the first rotation speed. The second exhaust level may be a level higher than the first exhaust level by one level.

[0414] The controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle based on the determined exhaust level being the third exhaust level.

[0415] The preset tilting angle may be the maximum tilting angle.

[0416] The controlling of the tilting angle of the second suction part 140 to a preset tilting angle may include controlling the drive motor 151 to rotate in the first rotation direction by a preset rotation angle.

[0417] The controlling of the tilting angle of the second suction part 140 to a preset tilting angle may include causing the intake port of the second suction part to be exposed to the outside of the main body of the first cooking appliance.

[0418] The controlling of the tilting angle of the second suction part 140 to a preset tilting angle may include causing the second suction part 140 to protrude from the first panel of the main body of the first cooking appliance.

[0419] The controller 280 may form an air curtain on the front of the first cooking appliance by controlling the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle.

[0420] The controller 280 may form an air curtain on the door side of the first cooking appliance by controlling the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle. Through this, the embodiment may efficiently draw in contaminated air escaping from the cooking area to the outside.

[0421] The controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to 0 degrees based on a change from the third exhaust level to the second exhaust level.

[0422] The controlling of the tilting angle of the second suction part 140 to 0 degrees may include controlling the drive motor 151 to rotate in the second rotation direction.

[0423] The controlling of the tilting angle of the second suction part 140 to 0 degrees may include controlling the drive motor 151 to rotate in the second rotation direction by a preset rotation angle.

[0424] The controlling of the tilting angle of the second suction part 140 to 0 degrees may include changing the second suction part from an exposed state to an accommodated state.

[0425] While performing automatic exhaust control at the third exhaust level, the controller 280 may also control the first and second fan motors 112 and 122 at the third rotation speed higher than the second rotation speed based on the contamination level of contaminated air being in an increasing state.Automatic Exhaust Mode ControlExample 4

[0426] The controller 280 may also adjust the tilting angle of the second suction part 140 based on the increasing state, maintaining state, or decreasing state of the contamination level. In this case, the exhaust level may further include one or more exhaust levels higher than the third exhaust level. In the embodiment, an example in which a fourth exhaust level and a fifth exhaust level higher than the third exhaust level is present will be described.

[0427] The third exhaust level may be a preset exhaust level. The fourth exhaust level may be a level higher than the third exhaust level by one level and lower than the fifth exhaust level by one level.

[0428] When the determined exhaust level is equal to or higher than the preset exhaust level, the controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed based on the determined exhaust level and adjust the tilting angle of the second suction part 140. This will be described in more detail.

[0429] The controller 280 may, based on the exhaust level being the third exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle.

[0430] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle may include controlling the rotation angle of the drive motor 151 to the first rotation angle while controlling the driving motor 151 to rotate in the first rotation direction.

[0431] The controller 280 may, based on the exhaust level being the third exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle.

[0432] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle may include controlling the rotation angle of the drive motor 151 to the first rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0433] The controller 280 may, based on the exhaust level being the fourth exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the second tilting angle.

[0434] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the second tilting angle may include controlling the rotation angle of the drive motor 151 to the second rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0435] The controller 280 may, based on the exhaust level being the fifth exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the third tilting angle.

[0436] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the third tilting angle may include controlling the rotation angle of the drive motor 151 to the third rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0437] The second tilting angle may be larger than the first tilting angle and smaller than the third tilting angle.

[0438] The controller 280 may also recognize rotation speeds of the first and second fan motors corresponding to the contamination level of contaminated air, control the operation of the first and second fan motors at the identified rotation speeds, recognize the tilting angle of the second suction part corresponding to the contamination level of contaminated air, and control the drive motor 151 at the identified tilting angle.

[0439] The first cooking appliance according to the embodiment may rotate the first and second fan motors at the first rotation speed when performing an automatic exhaust mode, and rotate the first and second fan motors at the second rotation speed as the contamination level of contaminated air increases, thereby gradually increasing the rotation speeds of the first and second fan motors. Through this, the operation of the first cooking appliance may be performed stably.

[0440] As the tilting angle of the second suction part 140 increases, the opening degree of the intake port 145 of the second suction part 140 may increase. As the opening degree of the intake port 145 of the second suction part 140 increases, the proportion of contaminated air drawn into the second suction part 140 may increase, and the proportion of contaminated air drawn into the first suction part 130 may relatively decrease.

[0441] As shown in FIG. 17, when the proportion of contaminated air drawn into the second suction part 140 is A %, the proportion of contaminated air drawn into the first suction part 130 may be 100-A %. For example, when the proportion of contaminated air drawn into the second suction part 140 is 20% in response to the adjustment of the opening degree of the intake port 145 of the second suction part 140, the proportion of contaminated air drawn into the first suction part 130 may be 80%. As another example, when the proportion of contaminated air drawn into the second suction part 140 is 30% in response to the adjustment of the opening degree of the intake port 145 of the second suction part 140, the proportion of contaminated air drawn into the first suction part 130 may be 70%.

[0442] In the embodiment, only the ratio of the amount of contaminated air drawn into the second suction part 140 and the amount of air drawn into the first suction part changes according to the opening degree change of the intake port of the second suction part 140, and the total amount of contaminated air drawn through the first cooking appliance 2 may be the same. As described above, the embodiment may vary the ratio of the amounts of contaminated air drawn through the front and bottom of the first cooking appliance respectively through adjustment of the opening degree of the intake port of the second suction part 140.

[0443] The first cooking appliance according to the embodiment may guide contaminated air escaping outside the cooking area into the second suction part 140 while maintaining the size of the existing first cooking appliance 2, and accordingly may draw in contaminated air more efficiently.

[0444] FIG. 18A is a diagram showing density of carbon dioxide when the second suction part is retracted inside the main body, FIG. 18B is a diagram showing density of carbon dioxide when the second suction part is exposed to the outside of the main body, and FIG. 18C is a diagram showing velocity vectors of contaminated air when the second suction part is exposed to the outside of the main body.

[0445] As shown in FIGS. 18A, 18B, and 18C, the embodiment may allow an air curtain to be formed on the lower side of the door of the first cooking appliance by exposing the intake port 145 of the second suction part 140 to the outside of the main body so that contaminated air is drawn from the lower side of the door of the first cooking appliance. Through this, the embodiment may efficiently draw in contaminated air escaping from the cooking area to the outside.

[0446] The controller 280 may include at least one processor 281 that controls the operation of the first cooking appliance 2 and at least one memory 282 that stores programs and data for controlling the operation of the first cooking appliance 2.

[0447] The at least one processor 281 may include at least one memory that stores algorithms and program-type data for controlling the operation of components within the first cooking appliance 2, and one or more processor chips that perform the aforementioned operations using data stored in the at least one memory, or may include one or more processing cores.

[0448] The at least one processor 281 may process various types of data and various signals using instructions, data, programs, and / or software stored in the memory 282.

[0449] The at least one processor 281 may include one or more of a central processing device (CPU), a graphics processing device (GPU), an accelerated processing device (APU), a many integrated core (MIC), a digital signal processor (DSP), a neural processing device (NPU), a hardware accelerator, or a machine learning accelerator.

[0450] The memory 282 may store information about preset tilting angles, preset rotation angles, and preset exhaust levels.

[0451] The memory 282 may store information about movement distances of the second gear corresponding to rotation angles of the drive motor 151.

[0452] The memory 282 may store information about movement directions of the second gear corresponding to rotation directions of the drive motor 151.

[0453] The memory 282 may store information about rotation speeds of the first and second fan motors for each reference contamination level range.

[0454] The memory 282 may store information about rotation speeds of the first and second fan motors and tilting angles of the second suction part for each contamination level.

[0455] The memory 282 may store information about rotation speeds of the first and second fan motors and tilting angles of the second suction part for each exhaust level.

[0456] The memory 282 may store information about rotation angles of the drive motor 151 corresponding to tilting angles of the second suction part. The rotation angle of the drive motor 151 may include the number of rotations of the drive motor.

[0457] The memory 282 may store information about rotation directions of the drive motor corresponding to exposure and retraction of the second suction part 140.

[0458] The memory 282 may store data required for various embodiments.

[0459] The memory 282 may be implemented as an embedded memory type in the first cooking appliance 2 or as a detachable memory type to the first cooking appliance 2 according to data storage uses. For example, data for driving the first cooking appliance 2 may be stored in an embedded memory in the second cooking appliance 2, and data for extended functions of the first cooking appliance 2 may be stored in a detachable memory to the first cooking appliance 2.

[0460] Meanwhile, the embedded memory in the first cooking appliance 2 may be implemented as at least one of volatile memory (e.g., DRAM (dynamic RAM), SRAM (static RAM), or SDRAM (synchronous dynamic RAM), etc.), non-volatile memory (e.g., OTPROM (one time programmable ROM), PROM (programmable ROM), EPROM (erasable and programmable ROM), EEPROM (electrically erasable and programmable ROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash, etc.), hard drive, or solid state drive (SSD).

[0461] Also, the detachable memory to the first cooking appliance 2 may be implemented in forms such as memory cards (e.g., CF (compact flash), SD (secure digital), Micro-SD (micro secure digital), Mini-SD (mini secure digital), xD (extreme digital), MMC (multi-media card), etc.), external memory connectable to USB ports (e.g., USB memory), etc., but is not limited thereto.

[0462] The memory 282 may include one or more memory chips or one or more memory blocks.

[0463] At least one component may be added or deleted corresponding to the performance of the components of the first cooking appliance 2 shown in FIG. 13. Also, it will be easily understood by those skilled in the art that the mutual positions of the components may be changed corresponding to the performance or structure of the first cooking appliance 2.

[0464] Each component shown in FIG. 13 may be software and / or hardware components such as Field Programmable Gate Array (FPGA) and Application Specific Integrated Circuit (ASIC).

[0465] FIG. 19A and FIG. 19B are a control flowchart of automatic exhaust of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0466] The first cooking appliance identifies the contamination level of contaminated air generated during cooking of food by the second cooking appliance based on contamination level information detected by the contamination level sensor 260 (301).

[0467] The identifying of the contamination level of contaminated air generated during cooking of food by the second cooking appliance may include identifying the contamination level of contaminated air present in the cooking area of the cooking system.

[0468] The first cooking appliance may identify whether the contamination level of contaminated air is equal to or higher than the reference contamination level (302).

[0469] The first cooking appliance may perform a standby mode based on identifying that the contamination level of contaminated air is lower than the reference contamination level (303).

[0470] The standby mode may include stopping the first and second fan motors 112 and 122, accommodating the intake port of the second suction part 140 inside the main body of the first cooking appliance, and periodically monitoring the contamination level of contaminated air.

[0471] The first cooking appliance may determine the exhaust level as the first exhaust level based on identifying that the contamination level of contaminated air is equal to or higher than the reference contamination level (304).

[0472] The first cooking appliance performs automatic exhaust control corresponding to the first exhaust level based on the determined exhaust level being the first exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the first rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the determined exhaust level being the first exhaust level (305).

[0473] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include controlling the tilting angle of the second suction part 140 to 0 degrees.

[0474] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include allowing the intake port of the second suction part 140 to be accommodated inside the main body of the first cooking appliance.

[0475] While performing automatic exhaust control at the first exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (306). That is, while performing automatic exhaust control at the first exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0476] While performing automatic exhaust control at the first exhaust level, the first cooking appliance may determine the exhaust level as the second exhaust level based on the contamination level being identified as an increasing state (307, 308). That is, the first cooking appliance changes the exhaust level in the automatic mode from the first exhaust level to the second exhaust level.

[0477] The first cooking appliance performs automatic exhaust control corresponding to the second exhaust level based on the determined exhaust level being the second exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the exhaust level being determined as the second exhaust level (309).

[0478] Here, the second rotation speed may be faster than the first rotation speed. The second exhaust level may be a level higher than the first exhaust level by one level.

[0479] While performing automatic exhaust control at the first exhaust level, the first cooking appliance may control to enter a standby mode based on the contamination level being identified as a decreasing state (310).

[0480] While performing automatic exhaust control at the first exhaust level, the first cooking appliance may control to maintain the exhaust level as the first exhaust level based on the contamination level being maintained.

[0481] While performing automatic exhaust control at the second exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (311). That is, while performing automatic exhaust control at the second exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0482] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level being identified as an increasing state (312, 313). That is, the first cooking appliance changes the exhaust level from the second exhaust level to the third exhaust level.

[0483] The first cooking appliance performs automatic exhaust control corresponding to the third exhaust level based on the determined exhaust level being the third exhaust level. More specifically, the controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle based on the exhaust level being determined as the third exhaust level (314).

[0484] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle may include controlling the drive motor 151 to rotate in the first rotation direction by a preset rotation angle.

[0485] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle may include allowing the intake port 145 of the second suction part 140 to be exposed to the outside of the main body 200 of the first cooking appliance.

[0486] The controlling of the tilting angle of the intake port 145 to a preset tilting angle may include identifying the rotation angle of the drive motor 151 based on position information received from the position sensor 156, controlling to maintain rotation of the drive motor 151 based on the identified rotation angle of the drive motor 151 being less than the preset rotation angle, and controlling to stop rotation of the drive motor based on the identified rotation angle of the drive motor 151 reaching the preset rotation angle.

[0487] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may determine the exhaust level as the first exhaust level based on the contamination level being identified as a decreasing state. That is, the first cooking appliance changes the exhaust level from the second exhaust level to the first exhaust level.

[0488] The first cooking appliance performs automatic exhaust control corresponding to the first exhaust level based on the determined exhaust level being the first exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the first rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the exhaust level being changed to the first exhaust level.

[0489] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may control to maintain the exhaust level as the second exhaust level based on the contamination level being maintained.

[0490] While performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (316). That is, while performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0491] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the second exhaust level based on the contamination level being identified as a decreasing state (317, 308). That is, the first cooking appliance changes the exhaust level from the third exhaust level to the second exhaust level. The first cooking appliance performs automatic exhaust control corresponding to the second exhaust level based on the determined exhaust level being the second exhaust level.

[0492] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level not being in a decreasing state (313).

[0493] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may control to maintain the exhaust level as the third exhaust level based on the contamination level being maintained.

[0494] The first cooking appliance performs automatic exhaust control corresponding to the third exhaust level based on the determined exhaust level being the third exhaust level.

[0495] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may control to maintain the exhaust level as the third exhaust level based on the contamination level being identified as an increasing state. In this case, the first cooking appliance may also increase the rotation speeds of the first and second fan motors from the second rotation speed to the third rotation speed.

[0496] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may also recognize rotation speeds of the first and second fan motors for preventing increase of the contamination level based on the identified contamination level and control the first and second fan motors based on the identified rotation speeds of the first and second fan motors.

[0497] The first cooking appliance may repeat the process of periodically identifying the contamination level of contaminated air during automatic exhaust control and controlling the rotation speeds of the first and second fan motors and the tilting angle of the second suction part 140 while changing the exhaust level based on the identified contamination level of contaminated air.

[0498] The first cooking appliance according to the embodiment may rotate the first and second fan motors at low speed when performing automatic exhaust mode and gradually increase the rotation speeds of the first and second fan motors to high speed as the contamination level increases, thereby ensuring stable operation of the first cooking appliance.

[0499] FIG. 20A and FIG. 20B are a control flowchart of tilting angle of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0500] A control configuration of the first cooking appliance when there are third, fourth, and fifth exhaust levels for adjusting the tilting angle of the intake port 145 of the second suction part 140 will be described.

[0501] The fourth exhaust level and fifth exhaust level may be levels higher than the third exhaust level. The fifth exhaust level may be a level higher than the fourth exhaust level.

[0502] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level being identified as an increasing state.

[0503] The first cooking appliance may, based on the exhaust level being determined as the third exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the first tilting angle (321, 322).

[0504] The controlling of the tilting angle of the second suction part 140 to the first tilting angle may include controlling the rotation angle of the drive motor 151 by the first rotation angle while controlling the drive motor 151 in the first rotation direction.

[0505] The controlling of the tilting angle of the second suction part 140 to the first tilting angle may include allowing the intake port of the second suction part 140 to be exposed to the outside of the main body by the first tilting angle.

[0506] The controlling of the tilting angle of the intake port 145 to the first tilting angle may include identifying the rotation angle of the drive motor 151 based on position information received from the position sensor 156, controlling to maintain rotation of the drive motor 151 based on the identified rotation angle of the drive motor 151 being less than the first rotation angle, and controlling to stop rotation of the drive motor based on the identified rotation angle of the drive motor 151 reaching the first rotation angle.

[0507] While performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (323). That is, while performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0508] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the fourth exhaust level based on the contamination level being identified as an increasing state (324, 325). That is, the first cooking appliance changes the exhaust level from the third exhaust level to the fourth exhaust level.

[0509] The first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the second tilting angle based on the exhaust level being determined as the fourth exhaust level (326).

[0510] The controlling of the tilting angle of the second suction part 140 to the second tilting angle may include controlling the rotation angle of the drive motor 151 to the second rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0511] The controlling of the tilting angle of the second suction part 140 to the second tilting angle may include allowing the intake port of the second suction part 140 to the exposed to the outside of the main body by the second tilting angle.

[0512] The controlling of the tilting angle of the intake port 145 to the second tilting angle may include identifying the rotation angle of the drive motor 151 based on position information received from the position sensor 156, controlling to maintain rotation of the drive motor 151 based on the identified rotation angle of the drive motor 151 being less than the second rotation angle, and controlling to stop rotation of the drive motor based on the identified rotation angle of the drive motor 151 reaching the second rotation angle.

[0513] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the second exhaust level based on the contamination level being identified as a decreasing state (327). That is, the first cooking appliance changes the exhaust level from the third exhaust level to the second exhaust level.

[0514] The first cooking appliance performs automatic exhaust control corresponding to the second exhaust level based on the determined exhaust level being the second exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the exhaust level being determined as the second exhaust level.

[0515] That is, while performing automatic exhaust control at the third exhaust level, the first cooking appliance may control the rotation speeds of the first and second fan motors and control the tilting angle of the second suction part 140 to the initial tilting angle, based on the contamination level being identified as a decreasing state (328).

[0516] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include controlling the drive motor 151 to rotate in the second rotation direction by the first rotation angle.

[0517] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include allowing the intake port of the second suction part 140 to be retracted to the inside of the main body 200.

[0518] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may control to maintain the exhaust level as the third exhaust level based on the contamination level being identified as a maintained state.

[0519] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (329). That is, while performing automatic exhaust control at the fourth exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0520] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance may determine the exhaust level as the fifth exhaust level based on the contamination level being identified as an increasing state (330, 331). That is, the first cooking appliance changes the exhaust level from the fourth exhaust level to the fifth exhaust level.

[0521] The first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the third tilting angle, based on the exhaust level being determined as the fifth exhaust level (332).

[0522] The controlling of the tilting angle of the second suction part 140 to the third tilting angle may include controlling the rotation angle of the drive motor 151 to the third rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0523] The third tilting angle may be larger than the second tilting angle. The second tilting angle may be larger than the first tilting angle.

[0524] As the tilting angle of the second suction part increases, the opening degree of the intake port of the second suction part may increase.

[0525] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level being identified as a decreasing state (333). That is, the first cooking appliance changes the exhaust level from the fourth exhaust level to the third exhaust level.

[0526] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance may maintain the exhaust level as the fourth exhaust level based on the contamination level being identified as a maintained state.

[0527] While performing automatic exhaust control at the fifth exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (334). That is, while performing automatic exhaust control at the fifth exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0528] While performing automatic exhaust control at the fifth exhaust level, the first cooking appliance may determine the exhaust level as the fourth exhaust level based on the contamination level being identified as a decreasing state (335). That is, the first cooking appliance changes the exhaust level from the fifth exhaust level to the fourth exhaust level.

[0529] While performing automatic exhaust control at the fifth exhaust level, the first cooking appliance may maintain the exhaust level as the fifth exhaust level based on the contamination level not being identified as a decreasing state.

[0530] The first cooking appliance may repeat adjustment of the tilting angle of the second suction part 140 based on the increasing, maintaining, and decreasing states of the contamination level.

[0531] The first cooking appliance may adjust the opening degree of the intake port 145 of the second suction part 140 by adjusting the tilting angle of the second suction part 140 based on whether the contamination level of the cooking area increases and decreases.

[0532] The first cooking appliance may adjust the amount of contaminated air drawn into the intake port 145 of the second suction part 140 according to adjustment of the opening degree of the intake port 145 of the second suction part 140.

[0533] As the proportion of the amount of contaminated air drawn into the intake port 145 of the second suction part 140 increases, the proportion of the amount of air drawn into the first suction part may decrease.

[0534] In the embodiment, only the ratio of the amount of contaminated air drawn into the second suction part 140 and the amount of air drawn into the first suction part changes according to the opening degree change of the intake port of the second suction part 140, and the total amount of contaminated air drawn through the first cooking appliance 2 may be the same. As described above, the embodiment may vary the ratio of the amounts of contaminated air drawn through the front and bottom of the first cooking appliance respectively through adjustment of the opening degree of the intake port of the second suction part 140.

[0535] Meanwhile, the disclosed embodiments may be embodied in the form of a recording medium storing instructions executable by a computer. The instructions may be stored in the form of program code and, when executed by a processor, may generate a program module to perform the operations of the disclosed embodiments. The recording medium may be embodied as a computer-readable recording medium.

[0536] The computer-readable recording medium includes all kinds of recording media in which instructions which may be decoded by a computer are stored, for example, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, and the like.

[0537] Although embodiments of the present disclosure have been described with reference to the accompanying drawings, those skilled in the art will appreciate that these inventive concepts may be embodied in different forms without departing from the scope and spirit of the disclosure, and should not be construed as limited to the embodiments set forth herein.

Examples

example 1

[0369]The controller 280 may, upon an exhaust ON-command being received through the input device 231, identify the exhaust mode received through the input device 231, and based on the identified exhaust mode being an automatic exhaust mode, determine the exhaust level based on at least one of contamination level information received from the contamination level sensor 260, image information received from the image sensor 261, or cooking information of the second cooking appliance 3 received through the communication device 270, and may control the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151 based on the determined exhaust level.

[0370]The controller 280 may control lighting of the lighting device 160 based on the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151, and may control the lighting device 160 to be turned off based on stopping of the first and second fan motors 112 and 122 and ...

example 2

[0384]The controller 280 may identify a contamination level of contaminated air based on contamination level information received from the contamination level sensor 260, determine the exhaust level based on the identified contamination level of contaminated air and a plurality of reference contamination level ranges, control the rotation speeds of the first and second fan motors 112 and 122 based on the determined exhaust level, and may control the tilting angle of the second suction part 140 based on the determined exhaust level.

[0385]For example, the plurality of reference contamination level ranges may include a first reference contamination level range, a second reference contamination level range, and a third reference contamination level range.

[0386]Contamination levels within the second reference contamination level range may be values lower than contamination levels within the third reference contamination level range and higher than contamination levels within the first re...

example 3

[0391]The controller 280 may identify the state of the contamination level as an increasing state of contamination level based on an increase in the contamination level of air contamination being greater than a first reference value, and may identify the state of the contamination level as a decreasing state of contamination level based on a decrease in the contamination level of air contamination being greater than or equal to a second reference value. The controller 280 may identify the state of the contamination level as a maintained state of contamination level based on an increase in the contamination level of air contamination being less than the first reference value or a decrease in the contamination level of contaminated air being less than the second reference value.

[0392]The first reference value may include a first contamination level value or an increase rate of contamination level.

[0393]The second reference value may include a second contamination level value or a decr...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This is a continuation application, under 35 U.S.C. § 111(a), of International Application No. PCT / KR 2025 / 015596, filed Oct. 1, 2025, which claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2024-0163600, filed Nov. 15, 2024, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entireties by reference.TECHNICAL FIELD

[0002] The disclosure relates to an exhaustion apparatus for drawing in contaminated air generated during cooking of food through other cooking appliances and discharging the drawn contaminated air to the outside, a cooking appliance having the exhaustion apparatus, and a method of controlling the cooking appliance.BACKGROUND ART

[0003] A cooking appliance is a device that cooks food by heating the food, and is broadly divided into a method of generating heat for heating food using electricity and a method of generating heat for heating food by burning gas. For example, cooking appliances may be classified into gas ranges, ovens, induction heaters, highlights, and microwave ovens.

[0004] Cooking appliances generate smoke and odors during cooking of food. Therefore, an exhaustion apparatus is provided in the room to discharge smoke and odors generated during cooking of food to the outside.

[0005] Recently, microwave ovens (OTR: Over The Range) equipped with exhaustion apparatuses have been installed on the wall of the upper space within a room, and other cooking appliances (e.g., gas ranges, ovens, induction heaters, highlights, etc.) are installed below the microwave oven but on the floor of the room, thereby allowing a plurality of cooking appliances to be used in a certain area within the room.

[0006] In this case, the exhaustion apparatus provided in the microwave oven draw in smoke or odors generated from other cooking appliances provided below the microwave oven from above the other cooking appliances, and discharges the drawn smoke or odors to the outside. Conventional exhaustion apparatuses are effective for drawing in smoke and odors that rise vertically from a horizontal plane in which the exhaustion apparatus is provided toward the upper part of the room, but are not effective in drawing in smoke or odors that are generated in areas outside the horizontal plane covered by the microwave oven and move from the front of the microwave oven toward the center of the room, or smoke or odors that rise vertically from areas below not covered by the microwave oven. Accordingly, conventional exhaustion apparatuses suffer from low suction and exhaust performance.DISCLOSURETechnical Problem

[0007] An aspect of the disclosure provides an exhaustion apparatus that controls a tilting rotation of a second suction part to draw in air contaminated by food cooking from a front side and a lower side and discharge the drawn contaminated air to the outside, a cooking appliance having the exhaustion apparatus, and a method of controlling the cooking appliance.

[0008] Another aspect of the disclosure provides an exhaustion apparatus that controls an exhaust level based on a contamination level of air contaminated by food cooking and controls at least one fan and the tilting angle of the second suction part based on the exhaust level, a cooking appliance having the exhaustion apparatus, and a method of controlling the cooking appliance.Technical Solution

[0009] In accordance with the present disclosure, an exhaustion apparatus may include: a main body including a plurality of panels; a fan inside the main body and configured to draw air in to the main body and discharge, from the main body, the air that is drawn in; a first suction part in a first area of a first panel among the plurality of panels, the first suction part configured to guide a flow of air drawn in from the first area by the fan; a second suction part in a second area of the first panel that may be forward of the first area relative to a front of the main body, the second suction part configured to rotate relative to the main body such that the second suction part may be tiltable relative to the main body, and to guide a flow of air drawn in from the second area by the fan; and a drive assembly configured to: rotate the second suction part relative to the main body such that the second suction part may be tilted relative to the main body and at least a portion of the second suction part may be protruded from the main body, and rotate the second suction part relative to the main body such that the portion protruded from the main body may be retracted to the main body.

[0010] The drive assembly may include: a drive motor, a gear connected to the drive motor and configured to convert a rotational motion of the drive motor into a translational motion, and a connecting rod between the gear and the second suction part, the connecting rod configured to be moved by movement of the gear and based on a force applied to the connecting rod by the movement of the gear, transmit the applied force to the second suction part.

[0011] A direction of the force transmitted to the second suction part by the connecting rod may be determined by a rotation direction of the drive motor, and protrusion and retraction of an intake port of the second suction part relative to the main body may be determined by the rotation direction of the drive motor.

[0012] The exhaustion apparatus may further include: a sensor configured to: detect a contamination level of the air that is drawn in to the main body by the fan, and output data corresponding to the detected contamination level; and a controller configured to control a rotation speed of the fan and a tilting angle of the second suction part based on data output by the sensor.

[0013] The controller may be further configured to increase the rotation speed of the fan based on an increase in the contamination level detected by the sensor.

[0014] The controller may be further configured to increase the tilting angle of the second suction part based on an increase in the contamination level detected by the sensor.

[0015] In accordance with the present disclosure, a cooking appliance may include: a main body including a cooking chamber; a door configured to open and close the cooking chamber; a fan in a space between the main body and the cooking chamber and configured to draw air in to the main body and discharge, from the main body, the air that is drawn in; a first suction part in a first area of a panel on a bottom side of the main body, the first suction part configured to guide a flow of air drawn in from the first area by the fan; a second suction part in a second area of the panel that may be forward of the first area relative to a front of the main body, the second suction part configured to rotate relative to the main body such that the second suction part may be tilted relative to the main body, and to guide a flow of air drawn in from the second area by the fan; and a drive assembly configured to: rotate the second suction part relative to the main body such that the second suction part may be tilted relative to the main body and at least a portion of the second suction part may be protruded from the main body, and rotate the second suction part relative to the main body such that the portion protruded from the main body may be retracted to the main body.

[0016] The drive assembly may include: a drive motor, a gear connected to the drive motor and configured to convert a rotational motion of the drive motor into a translational motion, and a connecting rod between the gear and the second suction part, the connecting rod configured to be moved by movement of the gear and based on a force applied to the connecting rod by the movement of the gear, transmit the applied force to the second suction part, a direction of the force transmitted to the second suction part by the connecting rod may be determined by a rotation direction of the drive motor, and protrusion and retraction of an intake port of the second suction part relative to the main body may be determined by the rotation direction of the drive motor.

[0017] The cooking appliance may further include: a sensor configured to: detect a contamination level of the air that is drawn in to the main body by the fan, and output data corresponding to the detected contamination level; and a controller configured to control a rotation speed of the fan and a tilting angle of the second suction part based on data output by the sensor.

[0018] The controller may be further configured to increase the rotation speed of the fan based on an increase in the contamination level detected by the sensor.

[0019] The controller may be further configured to increase the tilting angle of the second suction part based on an increase in the contamination level detected by the sensor.

[0020] The cooking appliance may further include: a communication device configured to communicate with another cooking appliance that may be below the main body, wherein the controller may be further configured to: identify a cooking zone of the another cooking appliance based on cooking information received, through the communication device, from the another cooking appliance, and control rotation of the second suction part based on a position of the identified cooking zone.

[0021] The sensor may be a first sensor and the cooking appliance may further include a second sensor, the first sensor may be in the first area of the panel and the second sensor may be in the second area of the panel, the first sensor may be configured to: detect a contamination level of air that may be drawn in the first area by the fan, and output data corresponding to the detected contamination level of air drawn in the first area, the second sensor may be configured to: detect a contamination level of air that may be drawn in the second area by the fan, and output data corresponding to the detected contamination level of air drawn in the second area, and the controller may be further configured to control rotation of the second suction part based on the data output by the first sensor and the data output by the second sensor.

[0022] The cooking appliance may further include: an image sensor configured to obtain an image of another cooking appliance that may be below the main body, wherein the controller may be further configured to: identify a cooking zone of the another cooking appliance based on the obtained image, and control rotation of the second suction part based on a position of the identified cooking zone.

[0023] The cooking appliance may further include: an input device configured to receive a user input, wherein the controller may be further configured to: based on a manual mode and an exhaust level being received through the input device, control a rotation speed of the fan, and control rotation of the second suction part.

[0024] The cooking appliance further includes: a magnetron and further includes one or more heaters.

[0025] A method of controlling a cooking appliance according to another aspect is a method of controlling a cooking appliance including at least one fan provided in a main body, a cooking chamber, and first and second suction parts provided on a lower side of the main body, which includes: identifying a contamination level of contaminated air detected by a contamination level sensor; controlling the at least one fan at a first rotation speed based on whether the identified contamination level of contaminated air is equal to or higher than a reference contamination level; controlling the at least one fan at a second rotation speed while controlling the at least one fan at the first rotation speed based on an increase in contamination level; and controlling a tilting rotation of the second suction part so that the second suction part protrudes to the outside of the main body while controlling the at least one fan at the second rotation speed based on an increase in contamination level.

[0026] The controlling of the tilting rotation of the second suction part so that the second suction part protrudes to the outside of the main body includes determining a tilting angle of the second suction part based on the contamination level and controlling the tilting rotation of the second suction part based on the determined tilting angle.

[0027] The method of controlling the cooking appliance according to yet another aspect further includes drawing in contaminated air present below the main body using a plurality of suction holes of the first suction part and drawing in contaminated air present in front of the main body using the intake port of the second suction part when the intake port protrudes.

[0028] The method of controlling the cooking appliance according to yet another aspect further includes controlling the rotation speed of at least one fan and controlling the tilting rotation of the second suction part based on a manual mode and exhaust level being received through the input device.Advantageous Effects

[0029] According to the disclosure, the disclosure can easily draw in contaminated air escaping from the cooking area by drawing in air contaminated during cooking of food in the second cooking appliance through the first suction part of the exhaustion apparatus provided below the first cooking appliance and the second suction part of the exhaustion apparatus provided in front of the first cooking appliance.

[0030] The disclosure can efficiently draw in a larger amount of contaminated air than before while maintaining a size of a cooking area of the existing cooking system and improve the discharge capability of contaminated air.

[0031] The disclosure can make the exhaustion apparatus and the first cooking appliance more compact as the suction and discharge capability of contaminated air improves.

[0032] The disclosure can efficiently draw in and discharge contaminated air by adjusting the opening degree of the intake port of the second suction part based on the contamination level of contaminated air.

[0033] The disclosure can provide smart discharge technology and improve user convenience by adjusting the opening degree of the second suction part based on at least one of the cooking situation of food in the second cooking appliance and user input.

[0034] The disclosure can improve the marketability of the first cooking appliance and exhaustion apparatus and further ensure competitiveness of the first cooking appliance and exhaustion apparatus.DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a block diagram of a cooking system including an exhaustion apparatus according to an embodiment of the present disclosure.

[0036] FIG. 2 is a perspective view of a first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0037] FIG. 3 is an exemplified views of an internal space of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0038] FIG. 4 is exemplified views of an internal space of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0039] FIG. 5 is an exemplified view of arrangement of a first fan of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0040] FIG. 6 is an exemplified view of a first panel of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0041] FIG. 7 is a bottom view of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0042] FIG. 8 is an exemplified view of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0043] FIG. 9 is an exemplified view of an operation of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0044] FIG. 10 is an exemplified view of arrangement of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0045] FIG. 11 is a detailed structural diagram of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0046] FIG. 12A is an exemplary views of an operation of a second suction part by an operation of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0047] FIG. 12B is an exemplary views of an operation of a second suction part by an operation of a drive assembly of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0048] FIG. 13 is a control block diagram of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0049] FIG. 14 is an exemplary view of cooking zone recognition for identifying a cooking zone of a second cooking appliance using the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0050] FIG. 15 is an exemplary view of cooking zone recognition for identifying a cooking zone of a second cooking appliance using the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0051] FIG. 16 is an exemplary view of cooking zone recognition for identifying a cooking zone of a second cooking appliance using the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0052] FIG. 17 is an exemplified view illustrating a variation in the suction ratio of contaminated air through first and second intake ports of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0053] FIG. 18A is a diagram showing the density of carbon dioxide when the second suction part is retracted inside the main body.

[0054] FIG. 18B is a diagram showing the density of carbon dioxide when the second suction part is exposed to the outside of the main body.

[0055] FIG. 18C is a diagram showing velocity vectors of contaminated air when the second suction part is exposed to the outside of the main body.

[0056] FIG. 19A and FIG. 19B are a control flowchart of automatic exhaust of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0057] FIG. 20A and FIG. 20B are a control flowchart of the tilting angle of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.MODE OF INVENTION

[0058] The various embodiments of the disclosure and terminology used herein are not intended to limit the technical features of the disclosure to the specific embodiments, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the concept and scope of the disclosure.

[0059] In the description of the drawings, like numbers refer to like elements throughout the description of the drawings.

[0060] The singular forms preceded by “a,”“an,” and “the” corresponding to an item are intended to include the plural forms as well unless the context clearly indicates otherwise. In the disclosure, a phrase such as “A or B,”“at least one of A and B,”“at least one of A or B,”“A, B or C,”“at least one of A, B and C,” and “at least one of A, B, or C” may include any one of the items listed together in the corresponding phrase of the phrases, or any possible combination thereof.

[0061] As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (for example., importance or order).

[0062] When one (e.g., a first) element is referred to as being “coupled” or “connected” to another (e.g., a second) element with or without the term “functionally” or “communicatively,” it means that the one element is connected to the other element directly, wirelessly, or via a third element.

[0063] It will be understood that the terms “include”, “comprise” and / or “have” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0064] It is to be understood that if a certain component is referred to as being “coupled with,”“coupled to,”“supported on” or “in contact with” another component, it means that the component may be coupled with the other component directly or indirectly via a third component.

[0065] Throughout the specification, when a member is referred to as being “on” another member, the member is in contact with another member or yet another member is interposed between the two members.

[0066] The term “and / or” includes combinations of one or all of a plurality of associated listed items.

[0067] Hereinafter, operating principles and embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0068] FIG. 1 is a block diagram of a cooking system including an exhaustion apparatus according to an embodiment of the present disclosure.

[0069] A cooking system may include an exhaustion apparatus 1, a first cooking appliance 2, and a second cooking appliance 3.

[0070] The exhaustion apparatus 1 may be provided in a cooking area CA of a room. The exhaustion apparatus 1 may be provided adjacent to a wall W of the cooking area CA of the room and separated from the floor surface of the room. The exhaustion apparatus 1 may be provided in a middle area of the wall provided in the cooking area of the room.

[0071] The exhaustion apparatus 1 may be provided in the first cooking appliance 2. The exhaustion apparatus 1 may be provided in a lower portion of the first cooking appliance 2. The exhaustion apparatus 1 may be fixedly provided to the first cooking appliance 2.

[0072] The exhaustion apparatus 1 draws in smoke and odors generated during cooking of food through the second cooking appliance 3 and discharges the drawn smoke and odors to the outside. Hereinafter, smoke and odors will be referred to as ‘contaminated air’.

[0073] The exhaustion apparatus 1 may be provided above the second cooking appliance 3. The exhaustion apparatus 1 may be arranged spaced apart from the second cooking appliance 3 by a certain distance.

[0074] The exhaustion apparatus 1 may draw in contaminated air existing below the exhaustion apparatus 1. The contaminated air existing below the exhaustion apparatus 1 may be air existing between the exhaustion apparatus 1 and the second cooking appliance 3. The contaminated air existing below the exhaustion apparatus 1 may be air generated during an operation of the second cooking appliance 3.

[0075] The exhaustion apparatus 1 may draw in contaminated air moving from the front of the exhaustion apparatus 1 to the central area of the room.

[0076] The front of the exhaustion apparatus 1 may include the front of the first cooking appliance, may include the front of the second cooking appliance, and may include the front of the cooking area of the room.

[0077] The exhaustion apparatus 1 may adjust the amount of air drawn from the front based on the amount of contaminated air moving from the front of the exhaustion apparatus 1 to the central area of the room.

[0078] The exhaustion apparatus 1 is a device that draws in contaminated air existing in at least one space and discharges the drawn air to the outside, and may be the same device as an intake device or ventilation device. In the embodiment, it will be described as an exhaustion apparatus.

[0079] The configuration of the exhaustion apparatus 1 will be described in detail later.

[0080] The first cooking appliance 2 may be provided in the cooking area of the room. The first cooking appliance 2 may be provided adjacent to the wall of the cooking area of the room and separated from the floor surface of the room. The first cooking appliance 2 may be provided in a middle area of the wall provided in the cooking area of the room.

[0081] The first cooking appliance 2 may include the exhaustion apparatus 1. The exhaustion apparatus 1 may be fixedly installed below such first cooking appliance 2.

[0082] The first cooking appliance 2 may include a magnetron that generates microwaves. In this case, the first cooking appliance 2 may cook food by irradiating microwaves, generated from the magnetron, onto the food, causing water molecules in the food to undergo translational motion and generate friction heat.

[0083] The first cooking appliance 2 may be a microwave oven.

[0084] The first cooking appliance 2 may include a high voltage transformer (HVT), a high voltage diode, and a high voltage capacitor for providing high voltage to the magnetron.

[0085] The high voltage transformer receives AC power from the outside and transforms the ac power to high voltage, and may further include a primary coil that receives AC power, a secondary coil that transforms the AC power to a high voltage, and a filament coil that transforms the input AC power to a low voltage.

[0086] The first cooking appliance 2 may also include one or more heaters, and may further include a steam generator that generates steam.

[0087] The second cooking appliance 3 may be provided in the cooking area of the room. The second cooking appliance 3 may be provided adjacent to the wall of the cooking area of the room and fixed to the floor surface of the room. The second cooking appliance 3 may be provided in a lower area of the wall provided in the cooking area of the room.

[0088] The second cooking appliance 3 may be provided spaced apart from the exhaustion apparatus 1 by a certain distance.

[0089] The second cooking appliance 3 may also be provided spaced apart from the first cooking appliance 2.

[0090] The second cooking appliance 3 may be provided below the exhaustion apparatus 1.

[0091] The second cooking appliance 3 may be provided to protrude forward of the exhaustion apparatus compared to the exhaustion apparatus 1.

[0092] The second cooking appliance 3 may include at least one of a cooking appliance that generates heat for heating food using electricity and a cooking appliance that generates heat for heating food by burning gas.

[0093] For example, the second cooking appliance 3 may include a gas range, an induction heater, or a highlight.

[0094] The second cooking appliance 3 cooks food in a state exposed to the cooking area. Accordingly, during cooking of food using the second cooking appliance 3, odors, smoke, and harmful gases may be generated, and air existing in the cooking area may be contaminated by the odors, smoke, and harmful gases. That is, the second cooking appliance 3 may generate contaminated air during operation of the second cooking appliance 3.

[0095] The second cooking appliance 3 may perform communication with the exhaustion apparatus 1 and may also perform communication with the first cooking appliance 2.

[0096] The second cooking appliance 3 may transmit operation information of the second cooking appliance 3 to the exhaustion apparatus 1 and the first cooking appliance 2.

[0097] The second cooking appliance 3 may be connected to the exhaustion apparatus 1 and the first cooking appliance 2 through a network.

[0098] The network may include both wired networks and wireless networks. Wired networks include cable networks or telephone networks, etc., and wireless networks may include all networks that transmit and receive signals through radio waves. Wired networks and wireless networks may be connected to each other.

[0099] The network may include a wide area network (WAN), such as the Internet, a local area network (LAN) formed around an access point (AP), and a short-range wireless network that does not pass through an AP).

[0100] The short-range wireless network may include but is not limited to,

[0101] Bluetooth™ (IEEE 802.15.1), Zigbee (IEEE 802.15.4), Wi-Fi Direct, NFC (Near Field Communication), Z-Wave, etc. The AP may connect the second cooking appliance 3, the exhaustion apparatus 1, and the first cooking appliance 2 to a WAN to which a server (not shown) is connected.

[0102] The second cooking appliance 3, the exhaustion apparatus 1, and the first cooking appliance 2 may be connected to a server (not shown) through a WAN.

[0103] The AP may communicate with the second cooking appliance 3, the exhaustion apparatus 1, and the first cooking appliance 2 using wireless communications such as Wi-Fi™ (IEEE 802.11), Bluetooth™ (IEEE 802.15.1), Zigbee (IEEE 802.15.4), etc., and may connect to the WAN using wired communication, but is not limited thereto.

[0104] The cooking system may also further include a third cooking appliance 4 provided below the second cooking appliance 3. In this case, the third cooking appliance 4 may be provided on the floor surface of the cooking area of the room.

[0105] The third cooking appliance 4 may be provided integrally with the second cooking appliance 3 or may be provided detachably from the second cooking appliance 3.

[0106] The third cooking appliance 4 may include an oven.

[0107] FIG. 2 is a perspective view of a first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure, and will be described with reference to FIGS. 3 to 11, and FIGS. 12A and 12B.

[0108] In the embodiment of the present disclosure, the exhaustion apparatus 1 and the first cooking appliance 2 may be provided as one body. Components of the exhaustion apparatus 1 may be provided in the first cooking appliance 2. That is, the first cooking appliance 2 may be a microwave oven (OTR: Over The Range) equipped with the exhaustion apparatus 1. In the present disclosure, the structure of the exhaustion apparatus 1 and the first cooking appliance 2 provided as one body will be described.

[0109] The first cooking appliance 2 may include a main body 200 that forms the exterior.

[0110] The main body 200 may have a hexahedral shape. The main body 200 may have a hexahedral shape with an opening port formed on one surface.

[0111] The main body 200 includes a first panel 201 that forms the lower surface of the first cooking appliance 2, a second panel 202 that forms the upper surface of the first cooking appliance 2, a third panel 203 provided between the first panel 201 and the second panel 202 and connecting a first side of the first panel 201 and a first side of the second panel 202, a fourth panel 204 provided between the first panel 201 and the second panel 202 and connecting a second side of the first panel 201 and a second side of the second panel 202, and a fifth panel 205 provided between the first panel 201 and the second panel 202 and connecting a third side of the first panel 201 and a third side of the second panel 202.

[0112] The second panel 202 may include an exhaust port 202a to which an external exhaust pipe is connected. The exhaust port 202a provided in the second panel 202 may be a hole that guides drawn contaminated air to the exhaust pipe for discharge to the outside.

[0113] The first, second, third, fourth, and fifth panels 201, 202, 203, 204, and 205 may be provided integrally with each other or may be provided separately from each other.

[0114] The first, second, third, fourth, and fifth panels 201, 202, 203, 204, and 205 connected to each other may form an empty space.

[0115] The first cooking appliance 2 may include a cooking chamber 210 provided inside the main body 200, a door 220 that opens or closes the cooking chamber 210, and a control panel 230 that receives user input and displays operation information of the first cooking appliance.

[0116] The cooking chamber 210 may be formed in a hexahedral shape with an opening port formed on one surface.

[0117] The cooking chamber 210 may include a cooking chamber panel 211 that forms the cooking chamber. The cooking chamber panel 211 may be formed in a hexahedral shape with an opening port formed on one surface.

[0118] The cooking chamber 210 may include a tray (not shown) on which food is placed.

[0119] The tray may be provided on a lower surface among surfaces of the cooking chamber panel and may be provided in the central area of the lower surface of the cooking chamber panel 211. The tray may be provided rotatably and may be provided detachably from the cooking chamber panel 211. The tray may include a rotatable turntable.

[0120] The opening port of the main body 200 and the opening port of the cooking chamber 210 may be a location in which food is stored or retrieved. The opening port of the main body and the opening port of the cooking chamber may correspond to the front of the cooking chamber 210.

[0121] The door 220 may be provided on the front of the main body 200. The door 220 may be rotatably provided with respect to one side wall of the main body 200. That is, the door 220 may be provided to rotate to the left and right of the main body with respect to the main body.

[0122] The one side wall of the main body 200 may be the left wall, right wall, or lower wall of the main body 200.

[0123] The door 220 may include a handle (not shown) gripped by the user.

[0124] The door 220 may also be provided to slide up and down.

[0125] The door 220 may include a viewing window. The user may visually check the inside from outside the cooking chamber 210 in a state in which the cooking chamber 210 is closed through the viewing window of the door 220.

[0126] The control panel 230 may be provided on one side of the front of the main body 200.

[0127] The control panel 230 may be provided on one side of the door 220 and adjacent to the door 220. The control panel 230 may also be provided on the left or right side of the door 120.

[0128] The control panel 230 may provide a user interface for interaction between the user and the first cooking appliance 2. The user interface may include at least one input device and at least one output device.

[0129] The at least one input device may convert sensory information received from the user into electrical signals.

[0130] The at least one input device may include a power button, an operation button, a course selection dial (or a course selection button), a pause button, and an end button.

[0131] The at least one input device may include, for example, a keyboard, a mouse, a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone, etc.

[0132] The at least one output device may visually or audibly transmit information related to the operation of the first cooking appliance 2 to the user.

[0133] For example, the at least one output device may transmit information about a cooking course and an operation time of the first cooking appliance 2 to the user. The information about the operation of the first cooking appliance may be output as screens, indicators, voices, etc.

[0134] The at least one output device may include, for example, a display and a speaker, etc.

[0135] The display may be provided as a cathode ray tube (CRT), a digital light processing (DLP) panel, a plasma display panel, a liquid crystal display (LCD) panel, an electroluminescence (EL) panel, an electrophoretic display (EPD) panel, an electrochromic display (ECD) panel, a light emitting diode (LED) panel, or an organic light emitting diode (OLED) panel, etc., but is not limited thereto.

[0136] The first cooking appliance 2 may include an internal space 240 provided between the main body 200 and the cooking chamber panel 211.

[0137] The internal space 240 may include an exhaust room 241 in which components of the exhaustion apparatus are provided, and a machine room 242 in which the magnetron is provided.

[0138] As shown in FIG. 3, the exhaust room 241 may include a first space a1 provided between the first panel 201 and the cooking chamber panel 211, a second space a2 provided between the third panel 203 and the cooking chamber panel 211, a third space a3 provided between the fifth panel 205 and the cooking chamber panel 211, and may include a fourth space a4 provided between the fourth panel 204 and the cooking chamber panel 211.

[0139] For ease of explanation, the spaces are described separately, but the first space, second space, third space, and fourth space may be spaces connected to each other.

[0140] The fourth space a4 may be a partial space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211.

[0141] The exhaust room 241 may be a space for drawing in contaminated air and discharging the drawn contaminated air.

[0142] As shown in FIG. 3, among the spaces of the exhaust room 241, the spaces formed on the sides of the cooking chamber, that is, the second space a2, the third space a3, and the fourth space a4 may be separated into upper and lower spaces by separation panels 243, 244, and 245.

[0143] More specifically, the second space a2 may be separated into a lower space and an upper space by a first separation panel 243. The third space a3 may be separated into a lower space and an upper space by a second separation panel 244. The fourth space a4 may be separated into a lower space and an upper space by a third separation panel 245.

[0144] The lower spaces of the second space a2, the third space a3, and the fourth space a4 may be spaces in which contaminated air is drawn.

[0145] The upper spaces of the second space a2, the third space a3, and the fourth space a4 may be spaces that guide contaminated air drawn from each lower space to the exhaust port 202a.

[0146] The first separation panel 243, second separation panel 244, and third separation panel 245 may each be provided with a plurality of holes for movement of contaminated air.

[0147] A fourth separation panel 246 may be provided in the space provided between the cooking chamber panel 211 and the fourth panel 204. The space provided between the cooking chamber panel 211 and the fourth panel 204 may be separated into a front space and a rear space by the fourth separation panel 246 provided in the space. That is, the fourth space a4 may be a rear space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211.

[0148] The machine room 242 may include a fifth space a5 provided between the cooking chamber panel 211 and the fourth panel 204. The fifth space a5 may include the remaining space of the space provided between the cooking chamber panel 211 and the fourth panel 204. The fifth space a5 may be a front space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211. The fifth space a5 may be a central space among the spaces provided between the fourth panel 204 and the cooking chamber panel 211.

[0149] The fifth space a5 may be a space adjacent to the fourth space a4.

[0150] A magnetron 250 that generates microwaves for heating food in the cooking chamber 210 may be provided in the machine room 242.

[0151] A HVT, a high voltage diode, and a high voltage capacitor 251 for providing high voltage to the magnetron may be further provided in the machine room 242.

[0152] The first cooking appliance 2 may further include one or more heaters (not shown) provided in the cooking chamber 210 and applying heat to food.

[0153] The first cooking appliance 2 may include components of the exhaustion apparatus for drawing in and exhausting contaminated air. The components of the exhaustion apparatus may be included in the components of the first cooking appliance.

[0154] As shown in FIG. 5, the first cooking appliance 2 may include a first fan 110 mounted on the first separation panel 243 of the second space a2.

[0155] The first fan 110 may include one or two first blades 111 and a first fan motor 112 that transmits rotational force to the one or two first blades 111.

[0156] When two first blades 111 are provided in the first fan 110, the two first blades 111 may be arranged parallel to the front-rear direction of the first cooking appliance 2 in the lower space of the second space a2.

[0157] When two first blades 111 are provided in the first fan 110, a first fan motor 112 may be provided between the two first blades 111. The shafts of the two first blades 111 may be connected to the first fan motor 112. The two first blades 111 may rotate in conjunction with each other by rotation of the first fan motor 112.

[0158] The first fan motor 112 may have two shafts extending in different directions. Each shaft of the first fan motor 112 may be connected to a respective shaft of the two first blades 111.

[0159] The first fan motor 112 allows contaminated air existing below or in front of a first suction part and a second suction part to be drawn in, and the drawn contaminated air to be discharged to the outside through the exhaust port 20a of the second panel 202 via the upper space of the second space a2 of the first cooking appliance 2.

[0160] The area below or in front of the first suction part and the second suction part may include the lower area or front area of the first cooking appliance 2.

[0161] The first fan 110 may be a centrifugal fan, an axial fan, or a turbo fan, and the type of the first fan is not limited thereto.

[0162] The first fan 110 may be any one type of fan among a backward type fan, an airfoil limit type fan, a radial plate type fan, and a Sirocco type fan, and the type of the first fan is not limited thereto.

[0163] As shown in FIGS. 3 and 4, the first cooking appliance 2 may include a second fan 120 mounted on the third separation panel 245 of the second space a4.

[0164] The second fan 120 may include a second blade 121 and a second fan motor 122 that transmits rotational force to the second blade 121.

[0165] The second fan 120 may be arranged parallel to the up-down direction of the first cooking appliance 2 in the lower space of the fourth space a4. The second fan 120 may be arranged perpendicular to the front-rear direction of the first cooking appliance 2 in the lower space of the fourth space a4.

[0166] The second blade 121 may be provided as one or two or more second blades.

[0167] The shafts of one or two or more second blades 121 may be connected to the shaft of the second fan motor 122.

[0168] The one or two or more second blades 121 may receive rotational force from the second fan motor 122 and rotate.

[0169] The second fan motor 122 allows contaminated air existing around the first suction part and second suction part to be drawn in, and the drawn contaminated air to be discharged to the outside through the exhaust port 20a of the second panel 202 via the upper space of the fourth space a4 of the first cooking appliance 2.

[0170] The second fan 120 may be a centrifugal fan, an axial fan, or a turbo fan, and the type of the second fan is not limited thereto.

[0171] The second fan 120 may be any one type of fan among a backward type fan, an airfoil limit type fan, a radial plate type fan, and a Sirocco type fan, and the type of the second fan is not limited thereto.

[0172] The first panel 201 of the first cooking appliance 2 may be formed in a flat plate shape.

[0173] The first panel 201 of the first cooking appliance 2 may include one, or two or more mounting holes.

[0174] As shown in FIG. 6, the two or more mounting holes may include a first mounting hole 201a, a second mounting hole 201b, and a third mounting hole 201c.

[0175] The first mounting hole 201a may be a hole provided in an area on the first side of a rear area PA1 of the first panel 201.

[0176] The second mounting hole 201b may be a hole provided in an area on the second side of a rear area PA1 of the first panel 201.

[0177] The rear area PA1 of the first panel 201 may be a first area of the first panel.

[0178] The third mounting hole 201c may be a hole provided in a front area PA2 of the first panel 201.

[0179] The front area PA2 of the first panel 201 may be a second area of the first panel. That is, the second area of the first panel may be an area located forward of the first area.

[0180] As shown in FIG. 7, the first cooking appliance 2 may further include a first suction part 130 provided in the rear area PA1 of the first panel 201, a second suction part 140 provided in the front area PA2 of the first panel 201, a drive assembly 150 provided in the central region of the rear area PA1 of the first panel 201, and a lighting device 160.

[0181] The first suction part 130 may draw in contaminated air from the first area of the first panel of the main body of the first cooking appliance 2.

[0182] The first suction part 130 may include one or more suction panels for drawing in contaminated air below the first cooking appliance 2. The embodiment will be described by way of example of a first suction part 130 including two suction panels.

[0183] The first suction part 130 may include a first suction panel 131 provided with a plurality of first suction holes sh1 and a second suction panel 132 provided with a plurality of second suction holes sh2.

[0184] The first suction panel 131 may be provided in the first mounting hole 201a of the first panel 201. The first suction panel 131 may be detachably provided in the first mounting hole 201a of the first panel 201.

[0185] The first suction part 130 may draw in contaminated air from the second area of the first panel of the main body of the first cooking appliance 2.

[0186] The second suction panel 132 may be provided in the second mounting hole 201b of the first panel 201. The first suction panel 131 may be detachably provided in the second mounting hole 201b of the first panel 201.

[0187] Contaminated air below the first cooking appliance 2 may be drawn through the plurality of first suction holes sh1 of the first suction panel 131 and the plurality of second suction holes sh2 of the second suction panel 132.

[0188] The second suction part 140 may be provided in the third mounting hole 201c of the first panel 201.

[0189] The second suction part 140 may be detachably provided in the third mounting hole 201c of the first panel 201.

[0190] The second suction part 140 may be provided adjacent to the door 220.

[0191] The second suction part 140 may draw in contaminated air existing around the door 220.

[0192] The second suction part 140 may draw in contaminated air existing in front of the main body.

[0193] The second suction part 140 may be provided to be titable in the third mounting hole 201c of the first panel 201. That is, the second suction part 140 may perform tilting rotation.

[0194] The second suction part 140 may have an intake port exposed to the outside of the main body 200 of the first cooking appliance 2 or have an intake port retracted into the main body 200 of the first cooking appliance according to the tilting rotation.

[0195] The exposure of the intake port to the outside of the main body (200) of the first cooking appliance (2) according to the tilting rotation may include protruding of the intake port to the outside of the main body (200) of the first cooking appliance (2).

[0196] The retraction of the intake port into the main body (200) of the first cooking appliance (2) according to the tilting rotation may include accommodating of the intake port in the interior of the main body (200) of the first cooking appliance (2).

[0197] When the intake port is exposed to the outside of the main body 200 of the first cooking appliance, the second suction part 140 may draw in contaminated air existing at a position adjacent to the door 220.

[0198] After the intake port is exposed to the outside of the main body 200 of the first cooking appliance, the flow of contaminated air drawn through the intake port of the second suction part may form a barrier wall in a front direction of the first cooking appliance.

[0199] The second suction part 140 may be provided as a tilting member that performs tilting rotation with one side as a rotation axis.

[0200] As shown in FIG. 8, the second suction part 140 may include a first guide panel 141, a second guide panel 142, and a third guide panel 143 for guiding suction of contaminated air.

[0201] The first guide panel 141 may be provided to extend from the first side to the second side of the main body 200 of the first cooking appliance 2. The first guide panel 141 may be provided to extend from the first side to the second side of the door 220 of the first cooking appliance 2.

[0202] The first guide panel 141 may have a plate shape. The first guide panel 141 may include a first edge 141a, a second edge 141b, a third edge 141c, and a fourth edge 141d.

[0203] The first edge 141a of the first guide panel 141 may be adjacent to the first suction part 130. The first edge 141a of the first guide panel 141 may serve as an axis of the first guide panel 141 during a tilting rotation of the first guide panel 141.

[0204] The second edge 141b of the first guide panel 141 may be adjacent to the door 220.

[0205] The second edge 141b of the first guide panel 141 may be a part that moves during a tilting rotation of the second suction part 140. The movement position of the second edge 141b of the first guide panel 141 may vary according to the tilting angle of the second suction part 140.

[0206] The third edge 141c of the first guide panel 141 may be adjacent to the first side of the main body 200 of the first cooking appliance 2.

[0207] The fourth edge 141d of the first guide panel 141 may be adjacent to the second side of the main body 200 of the first cooking appliance 2.

[0208] The third edge 141c and the fourth edge 141d of the first guide panel 141 may be parts that move during a tilting rotation of the second suction part 140.

[0209] The movement positions of the third edge 141c and the fourth edge 141d of the first guide panel 141 may vary according to the tilting angle of the second suction part 140.

[0210] The second guide panel 142 may be provided at the third edge 141c of the first guide panel 141.

[0211] The second guide panel 142 may be adjacent to the first side of the main body 200 and may be adjacent to the first side of the door 220.

[0212] The second guide panel 142 may be formed in a triangular shape.

[0213] The second guide panel 142 may be a part that moves during a tilting rotation of the second suction part 140. The size of the surface of the second guide panel 142 exposed to the outside of the main body 200 may vary according to the tilting angle of the second suction part 140.

[0214] The third guide panel 143 may be provided at the fourth edge 141d of the first guide panel 141.

[0215] The third guide panel 143 may be adjacent to the second side of the main body 200 and may be adjacent to the third side of the door 220.

[0216] The third guide panel 143 may be formed in a triangular shape. The third guide panel 143 may face the second guide panel 142.

[0217] The third guide panel 143 may be a part that moves during a tilting rotation of the second suction part 140. The size of the surface of the third guide panel 143 exposed to the outside of the main body may vary according to the tilting angle of the second suction part 140.

[0218] As shown in FIG. 9, the first, second, and third guide panels 141, 142 and 143 may be drawn out from the first panel 201 by being exposed to the outside of the main body 200 through a tilting rotation of the second suction part 140.

[0219] The first, second, and third guide panels 141, 142 and 143 may form an opening port, that is, an intake port 145, based on being exposed to the outside of the main body 200 by a tilting rotation of the second suction part 140.

[0220] The first, second, and third guide panels 141, 142 and 143 may allow the size of the intake port 145 to be adjusted based on control of the tilting angle of the second suction part 140.

[0221] The first, second, and third guide panels 141, 142 and 143 may guide the flow of contaminated air so that contaminated air existing around the front of the main body 200, that is, contaminated air existing around the door 220, may be drawn into the intake port 145.

[0222] The amount of contaminated air drawn into the second suction part 140 may be adjusted based on size adjustment of the intake port 145 of the first, second, and third guide panels 141, 142, and 143.

[0223] The first cooking appliance 2 may further include a duct connected to the second suction part 140 and a damper provided inside the duct.

[0224] When a duct and a damper are provided in the first cooking appliance, as an example, the first cooking appliance 2 may adjust the opening degree of the intake port of the second suction part 140, control opening of the damper based on the second suction part 140 being exposed to the outside of the main body, and control closing of the damper based on the second suction part 140 being accommodated inside the main body.

[0225] When a duct and a damper are provided in the first cooking appliance, as another example, the first cooking appliance 2 may control a tilting rotation of the first suction part so that the opening degree of the intake port of the second suction part 140 reaches a preset opening degree based on the second suction part 140 being exposed to the outside of the main body, control the opening degree of the damper based on the contamination level, and control closing of the damper based on the second suction part 140 being accommodated inside the main body.

[0226] When a duct and a damper are provided in the first cooking appliance, as yet another example, the first cooking appliance 2 may control a tilting rotation of the second suction part 140 based on the second suction part 140 being exposed to the outside of the main body so that the opening degree of the intake port is adjusted and the opening degree of the damper is adjusted based on the contamination level.

[0227] The second suction part 140 may further include a lighting hole 144.

[0228] A lighting device 160 may be provided in the lighting hole 144 for guiding whether an exhaust operation is performed. The lighting device 160 may be turned on based on an exhaust operation being performed and may be turned off based on an exhaust operation not being performed.

[0229] The lighting device 160 may be fixedly mounted to the second suction part 140. The lighting device 160 may also be detachably provided in the lighting hole 144.

[0230] As shown in FIG. 10, the drive assembly 150 may be provided in the central area of the first panel 201. The drive assembly 150 may be provided between the first suction panel 131 and the second suction panel 132.

[0231] The drive assembly 150 may apply a force to the lighting device 160 fixed to the second suction part 140 to perform a tilting rotation on the second suction part 140.

[0232] More specifically, when the drive assembly 150 applies a force to the lighting device 160, the force applied to the lighting device 160 may be transmitted to the first guide panel 141 of the second suction part 140. Then, due to the force transmitted to the first guide panel 141 of the second suction part 140, the second edge moves about the first edge as an axis, and the second and third guide panels 142 and 143 fixed to the first guide panel 141 also move together. Accordingly, the second and third guide panels 142 and 143 of the second suction part may be exposed to the outside of the main body 200, and an intake port may be formed by the exposure of the second and third guide panels 142 and 143.

[0233] As shown in FIG. 11, the drive assembly 150 may include a drive motor 151, a first gear 152, a second gear 153, a connecting rod 154, and a push member 155.

[0234] The drive motor 151 may generate a rotational force for driving.

[0235] The drive motor 151 may rotate in a first rotation direction or rotate in a second rotation direction. The first rotation direction may be opposite to the second rotation direction. For example, when the first rotation direction is clockwise, the second rotation direction may be a counterclockwise direction. As another example, when the first rotation direction is a counterclockwise direction, the second rotation direction may be a clockwise direction.

[0236] The first gear 152 is connected to the shaft of the drive motor 151 and may rotate in conjunction with the rotation of the drive motor 151. The first gear 152 may rotate in the first rotation direction by the drive motor 151 rotating in the first rotation direction, and may rotate in the second rotation direction by the drive motor 151 rotating in the second rotation direction.

[0237] The first gear 152 may be a pinion gear having a circular shape and having first teeth formed on the outer circumferential surface thereof.

[0238] The second gear 153 may be connected to the first gear 152.

[0239] The second gear 153 may be a rack gear having a linear shape and having second teeth formed on at least one surface.

[0240] The second teeth of the second gear 153 may mesh with the first teeth of the first gear 152. Accordingly, the second gear 153 may receive power by the rotation of the first gear 152.

[0241] The second gear 153 may perform a translational motion by the rotational force of the first gear 152.

[0242] The second gear 153 may perform a linear movement in a first direction by the first gear 152 rotating in the first rotation direction, and may perform a linear movement in a second direction by the first gear 152 rotating in the second rotation direction.

[0243] In the embodiment, the first rotation direction may be a counterclockwise direction. The second rotation direction may be a clockwise direction.

[0244] The linear motion in the first direction may include moving from the rear to the front of the first cooking appliance.

[0245] The linear motion in the second direction may include moving from the front to the rear of the first cooking appliance.

[0246] Although the drive assembly 150 includes first and second gears that convert the rotational motion of the drive motor 151 into linear motion, components for converting the rotational motion of the drive motor into linear motion are not limited thereto.

[0247] For example, the drive assembly 150 may include a cam that converts the rotational motion of the drive motor 151 into linear motion.

[0248] The connecting rod 154 may be connected to the second gear 153.

[0249] The connecting rod 154 may be connected to the end of the second gear 153 and may be fixedly provided.

[0250] The connecting rod 154 may move in conjunction with the movement of the second gear 153.

[0251] When the second gear 153 moves linearly in the first direction, the connecting rod 154 may perform a linear motion in the first direction by the moving force of the second gear 153.

[0252] When the second gear 153 moves linearly in the second direction, the connecting rod 154 may perform a linear motion in the second direction by the moving force of the second gear 153.

[0253] The push member 155 may be connected to the connecting rod 154.

[0254] The push member 155 may be connected to the end of the connecting rod 154 and may be fixedly provided.

[0255] The push member 155 may move in conjunction with the movement of the connecting rod 154.

[0256] When the connecting rod 154 moves linearly in the first direction, the push member 155 may perform a linear motion in the first direction by the moving force of the connecting rod 154.

[0257] When the connecting rod 154 moves linearly in the second direction, the push member 155 may perform a linear motion in the second direction by the moving force of the connecting rod 154.

[0258] The push member 155 may be provided to be contactable with the lighting device 160. The push member 155 may be provided to contact the middle area or upper area of the body of the lighting device 160.

[0259] The push member 155 may also be fixedly provided on the lighting device 160. The push member 155 may also be fixedly provided on the middle area or upper area of the body of the lighting device 160.

[0260] When a moving force in the first direction is applied from the connecting rod 154, the push member 155 may transmit the moving force in the first direction to the lighting device 160, and when a moving force in the second direction is applied from the connecting rod 154, the push member 155 may transmit the moving force in the second direction to the lighting device 160.

[0261] The push member 155 may apply a force in the first direction to the lighting device 160 or apply a force in the second direction to the lighting device 160.

[0262] When applying a force in the first direction to the lighting device 160, the push member 155 may apply a force to the middle area or upper area of the body of the lighting device 160.

[0263] The push member 155 may also remove the force applied in the first direction to the lighting device 160.

[0264] When a force in the first direction is applied from the push member 155, the lighting device 160 may transmit the applied force in the first direction to the first guide panel 141.

[0265] Since the lighting device 160 and the first guide panel 141 are fixed to each other, the force in the first direction applied to the lighting device 160 may be transmitted to the first guide panel 141 as it is.

[0266] Since the first edge 141a of the first guide panel 141 is fixed, when a force in the first direction is applied, the applied force may allow the first guide panel 141 to move in a direction in which there is no restraining force or a direction in which the restraining force is weaker than the applied force.

[0267] Here, the direction in which there is no restraining force or the direction in which the restraining force is weaker than the applied force may be a direction corresponding to the outside of the main body 200.

[0268] That is, when a force in the first direction is applied to the lighting device 160 and the first guide panel 141, the force may cause the second edge to move about the first edge 141a of the first guide panel 141 as an axis.

[0269] As shown in FIG. 12A, the drive assembly 150 causes the second gear 153 to move linearly in the first direction by rotating the drive motor 151 and the first gear 152 in the first rotation direction, causes the connecting rod 154 and the push member 155 to move in the first direction by the linear movement of the second gear 153, and applies a force to the lighting device 160 by the movement of the connecting rod 154 and the push member 155.

[0270] The drive assembly 150 may apply a force F1 in the first direction to the lighting device 160 to cause the second and third guide panels 142 and 143 of the second suction part to be exposed to the outside of the main body 200. In this case, the intake port 145 may be formed by the exposure of the second and third guide panels 142 and 143 of the second suction part.

[0271] As shown in FIG. 12B, the drive assembly 150 causes the second gear 153 to move linearly in the second direction by rotating the drive motor 151 and the first gear 152 in the second rotation direction, causes the connecting rod 154 and the push member 155 to move in the second direction by the linear movement of the second gear 153, and applies a force to the lighting device 160 by the movement of the connecting rod 154 and the push member 155.

[0272] The drive assembly 150 applies a force F2 in the second direction to the lighting device 160 to cause the second and third guide panels 142 and 143 of the second suction part to be accommodated inside the main body 200.

[0273] As shown in FIG. 11, the first cooking appliance 2 may further include a position sensor 156 for detecting the position of the second gear 153.

[0274] The position of the second gear 153 may include a movement distance or a movement amount of the second gear 153.

[0275] The movement distance of the second gear 153 may include a movement distance of the connecting rod 154.

[0276] The movement distance of the second gear 153 may correspond to the rotation angle of the drive motor 151.

[0277] The position sensor 156 may include a Hall sensor. In this case, the position sensor 156 may detect a signal generated by the second teeth of the second gear 153 and transmit the detected signal to the controller. The signal generated by the second teeth may be a signal for identifying the position of the second gear 153.

[0278] The position sensor 156 may also include an optical sensor and an ultrasonic sensor.

[0279] Unlike the embodiment, when the exhaustion apparatus is provided separately from the first cooking appliance, the exhaustion apparatus may include a first main body, a first fan, a second fan, a first suction part, a second suction part, a drive assembly, and a lighting device, and may further include a control panel. In addition, the first cooking appliance may include a second main body provided separately from the exhaustion apparatus, a cooking chamber provided in the second main body, a door, and a magnetron.

[0280] FIG. 13 is a control block diagram of a first cooking appliance equipped with an exhaustion apparatus according to an embodiment of the present disclosure.

[0281] The first cooking appliance 2 may include a first fan motor 112, a second fan motor 122, a drive motor 151, a position sensor 156, a lighting device 160, a control panel 230, a magnetron 250, a contamination level sensor 260, a communication device 270, and a controller 280.

[0282] The first fan motor 112 may draw in contaminated air existing below and in front of the first cooking appliance 2. The contaminated air may be air contaminated by cooking food through the second cooking appliance 2.

[0283] The first fan motor 112 may rotate or stop based on control commands from the controller 280.

[0284] The first fan motor 112 may rotate at a rotation speed corresponding to control commands from the controller 280.

[0285] The second fan motor 122 may draw in contaminated air existing below and in front of the first cooking appliance 2.

[0286] The second fan motor 122 may rotate or stop based on control commands from the controller 280.

[0287] The second fan motor 122 may rotate at a rotation speed corresponding to control commands from the controller 280.

[0288] The drive motor 151 may cause a tilting rotation of the second suction part 140 to be performed by operating the drive assembly 150. The drive motor 151 may cause the second suction part 140 to be exposed to the outside of the main body 200 of the first cooking appliance or cause the second suction part 140 to be accommodated inside the main body 200 of the first cooking appliance by operating the drive assembly 150.

[0289] The drive motor 151 may rotate or stop based on control commands from the controller 280.

[0290] The drive motor 151 may rotate in a rotation direction corresponding to control commands from the controller 280. Here, the rotation direction may include a first rotation direction and a second rotation direction opposite to the first rotation direction.

[0291] The drive motor 151 may apply a rotational force to the first gear 152 of the drive assembly 150 during rotation.

[0292] The drive motor 151 may cause the first gear 152 of the drive assembly 150 to rotate in the first rotation direction or cause the first gear 152 of the drive assembly 150 to rotate in the second rotation direction.

[0293] The drive motor 151 may rotate at a rotation angle corresponding to control commands from the controller 280. The second gear 153, the connecting rod 154, and the push member 155 of the drive assembly may move by a movement distance corresponding to the rotation angle of the drive motor 151.

[0294] The position sensor 156 may detect the position of the second gear 153 and transmit position information corresponding to the detected position to the controller 280.

[0295] The position of the second gear 153 may be the movement distance of the second gear.

[0296] The movement distance of the second gear 153 may correspond to the rotation angle of the drive motor 151.

[0297] The position of the second gear 153 may be the movement distance of the connecting rod 152.

[0298] The lighting device 160 may include one or more lamps.

[0299] The lighting device 160 may turn on one or more lamps or turn off one or more lamps based on control commands from the controller 280.

[0300] The lighting device 160 may turn on one or more lamps in response to the operation of the first and second fan motors 112 and 122, or turn off one or more lamps in response to the stopping of the first and second fan motors 112 and 122.

[0301] The control panel 230 may provide a user interface for interaction between the user and the first cooking appliance 2. The control panel 230 may include an input device 231 and an output device 232.

[0302] The input device 231 may transmit input information corresponding to user input to the controller 280.

[0303] The user input may include cooking start commands, cooking end commands, and pause commands.

[0304] The user input may include information related to food cooking. For example, the user input may include cooking mode information, target cooking temperature information, and cooking time information.

[0305] The user input may include exhaust information for discharging contaminated air. For example, the user input may include an automatic exhaust mode, a manual exhaust mode, and an exhaust level.

[0306] The automatic exhaust mode and the manual exhaust mode may have the same meaning as an automatic intake mode and a manual intake mode, and may have the same meaning as an automatic ventilation mode and a manual ventilation mode. The exhaust level may have the same meaning as an intake level or a ventilation level.

[0307] The output device 232 may output operation information of the first cooking appliance corresponding to control commands from the controller 280 visually and audibly so that the user may recognize the operation information.

[0308] The operation information of the first cooking appliance may include information about a cooking status, a cooking pause status, a cooking end status, a cooking mode, a target cooking temperature, a total cooking time, and a remaining cooking time, and may include information about a current exhaust mode and a current exhaust level.

[0309] The output device 232 may include at least one of a display that displays operation information of the first cooking appliance and a speaker that outputs operation information of the first cooking appliance as sound or voice.

[0310] The magnetron 250 may be turned on or off based on control commands from the controller 280.

[0311] The magnetron 250 may generate microwaves based on control commands from the controller 280.

[0312] The contamination level sensor 260 may detect the contamination level of contaminated air and transmit contamination level information about the detected contamination level to the controller 280.

[0313] The contamination level sensor 260 may be provided as one or more contamination level sensors. The two or more contamination level sensors may be the same type of contamination level sensor or different types of contamination level sensors.

[0314] The contamination level sensor 260 may include at least one of a volatile organic compounds (VOC) sensor, a particulate matter (PM) sensor, and a gas sensor.

[0315] The gas sensor may detect at least one gas among carbon monoxide, carbon dioxide, methane, hydrogen, ammonia, hydrogen sulfide, alcohol, methane, and formaldehyde, and the types of gases detected by the gas sensor are not limited thereto.

[0316] The contamination level sensor 260 may further include a humidity sensor that detects humidity in the cooking area below the first cooking appliance.

[0317] The first cooking appliance 2 may further include one or more temperature sensors for detecting the temperature of the cooking area below the first cooking appliance.

[0318] The first cooking appliance 2 may further include an image sensor 261 for obtaining images of the cooking area below the first cooking appliance.

[0319] The image sensor may further include at least one of a CCD sensor, CMOS sensor, thermal imaging sensor, and color sensor (or RGB sensor).

[0320] The thermal imaging sensor may include a thermal imaging camera.

[0321] In the case of the thermal imaging sensor, the thermal imaging sensor may detect the amount of infrared radiant heat from contaminated air and food below the first cooking appliance, convert the detected amount of infrared radiant heat to a color corresponding to the detected amount of infrared radiant heat to obtain a thermal image, and transmit the obtained thermal images to the controller 280.

[0322] When obtaining thermal images, the thermal imaging sensor may convert each amount of radiant heat to a corresponding predetermined color.

[0323] The communication device 270 may include various communication circuits for performing wired communication and / or wireless communication with external devices (e.g., a server, a second cooking appliance).

[0324] The communication device 270 may include at least one of a short-range communication circuit or a long-range communication circuit.

[0325] The communication device 270 may transmit data to external devices or receive data from external devices. For example, the communication device 270 may support cellular communication, wireless local area network, Home Radio Frequency (Home RF), infrared communication, Ultra-wide band (UWB) communication, Wi-Fi, Wi-Fi Direct, Bluetooth, AD-HOC, and / or Zigbee. The communication technologies supported by the communication device 270 are not limited to those illustrated.

[0326] The communication device 270 may also communicate with external devices through an access point (AP).

[0327] The communication device 270 may also receive information about the second cooking appliance from the second cooking appliance 3 in response to control commands from the controller 280 and transmit the received information of the second cooking appliance to the controller 280.

[0328] The information about the second cooking appliance may include position information of cooking zones in which food is being cooked.

[0329] The first cooking appliance 2 may also further include one or more heaters (not shown) that apply heat to the cooking chamber 310.

[0330] The controller 280 may be electrically connected to various components of the first cooking appliance equipped with the exhaustion apparatus and may control the various components. That is, the controller 280 may control the overall operation of the first cooking appliance 2 equipped with the exhaustion apparatus.

[0331] The controller 280 may control the operation of the first cooking appliance 2 based on an user input received by the input device 231.

[0332] The controller 280 may control the operation of the magnetron 250 based on a cooking start command received through the input device 231.

[0333] When controlling the magnetron 250, the controller 280 may control a high voltage transformer that applies a high voltage to the magnetron 250.

[0334] The controller 280 may control the output of the magnetron 250 based on a target cooking temperature received through the input device 231, and may determine the operation time of the magnetron based on a cooking time received through the input device 231.

[0335] The controller 280 may stop and control the operation of the magnetron 250 based on a cooking pause command or a cooking end command received through the input device 31.

[0336] When one or more heaters are provided in the first cooking appliance 2, the controller 280 may also control the one or more heaters based on cooking mode information and cooking start commands received through the input device 231.

[0337] The controller 280 may control the output device 232 so that output information related to the operation of the first cooking appliance 2 is output.

[0338] The controller 280 may control the output device 232 to output information about a cooking mode, a target cooking temperature, and a cooking time.

[0339] The controller 280 may control the output device 232 to output on / off information of exhaust mode, a current exhaust mode, and a current exhaust level.

[0340] The controller 280 may recognize the contamination level of contaminated air based on contamination level information received from the contamination level sensor 260.

[0341] When a plurality of contamination level sensors are provided, the controller 280 may recognize at least one contamination level sensor having detected a contamination level of contaminated air that is equal to or higher than a reference contamination level based on contamination level information received from the plurality of contamination level sensors 260, and may control exhaust based on the contamination level information received from the identified at least one contamination level sensor.

[0342] The plurality of contamination level sensors may be the same type of contamination level sensor or different types of contamination level sensors.

[0343] When a plurality of different types of contamination level sensors are provided, the controller 280 may recognize comprehensive contamination level information based on pieces of contamination level information received from the plurality of contamination level sensors 260, and may control exhaust based on the identified comprehensive contamination level information.

[0344] For example, the controller 280 may assign scores corresponding to contamination level information received from each contamination level sensor and recognize comprehensive contamination level information by summing the assigned scores.

[0345] The controller 280 may recognize the rotation angle of the drive motor 151 based on position information received from the position sensor 156.

[0346] The controller 280 may recognize the tilting angle of the second suction part based on position information received from the position sensor 156.Manual Exhaust Mode Control

[0347] The controller 280 may, upon an exhaust On-command being received through the input device 231, identify the exhaust mode received through the input device 231, identify the exhaust level received through the input device 231 based on the identified exhaust mode being a manual exhaust mode, control lighting of the lighting device 160 based on the identified exhaust level, control the rotation speed of the first and second fan motors 112 and 122, and control a tilting rotation of the second suction part 140.

[0348] When controlling the tilting rotation of the second suction part, the controller 280 may control the rotation angle of the drive motor 151.

[0349] The controller 280 may form a barrier wall (or an air curtain) by the flow of contaminated air in the front direction of the first cooking appliance by causing contaminated air to be drawn through the intake port of the second suction part after the intake port of the second suction part protrudes outside the main body 200 of the first cooking appliance through a tilting rotation of the second suction part.

[0350] More specifically, the controller 280 may control the first and second fan motors 112 and 122 at a first rotation speed based on the received exhaust level being a first exhaust level, and may control the first and second fan motors 112 and 122 at a second rotation speed based on the received exhaust level being a second exhaust level.

[0351] Here, the second rotation speed may be faster than the first rotation speed. The second exhaust level may be a higher level than the first exhaust level.

[0352] The controller 280 may control an operation of closing the intake port 145 of the second suction part 140 based on the received exhaust level being the first exhaust level or the second exhaust level.

[0353] That is, when the received exhaust level is the first exhaust level or the second exhaust level, the controller 280 causes the intake port 145 of the second suction part 140 to be accommodated inside the main body.

[0354] The first rotation speed of the first fan motor 112 and the first rotation speed of the second fan motor 122 may be the same or different. The embodiment describes an example of controlling the rotation speeds of the first and second fan motors 112 and 122 to be the same based on the exhaust level.

[0355] The controller 280 may control the first and second fan motors 112 and 122 at a second rotation speed based on the received exhaust level being a third exhaust level, and may control the drive motor 151 so that the intake port 145 of the second suction part 140 is exposed to the outside of the main body 200.

[0356] That is, the controller 280 may control the rotation angle of the drive motor 151 so that the tilting angle of the second suction part 140 reaches a preset tilting angle based on the received exhaust level being the third exhaust level. Here, the preset tilting angle may be the maximum tilting angle.

[0357] The controller 280 may also control the first and second fan motors 112 and 122 at a third rotation speed and control the rotation angle of the drive motor 151 so that the tilting angle of the second suction part 140 reaches a preset tilting angle based on the received exhaust level being the third exhaust level. The third rotation speed may be a rotation speed faster than the second rotation speed.

[0358] When there are exhaust levels higher than the third exhaust level, the controller 280 may also adjust the tilting angle of the second suction part 140 based on the received exhaust level when the received exhaust level is equal to or higher than a preset exhaust level.

[0359] Here, the preset exhaust level may be the third exhaust level. Exhaust levels equal to or higher than the preset exhaust level may include a third exhaust level, a fourth exhaust level, and a fifth exhaust level. The fourth and fifth exhaust levels are only examples of the embodiment, and the number of exhaust levels is not limited thereto.

[0360] More specifically, when the received exhaust level is the third exhaust level, the controller 280 may control the rotation angle of the drive motor 151 to a first rotation angle so that the tilting angle of the second suction part 140 reaches a first tilting angle, when the received exhaust level is the fourth exhaust level, the controller 280 may control the rotation angle of the drive motor 151 to a second rotation angle so that the tilting angle of the second suction part 140 reaches a second tilting angle, and when the received exhaust level is the fifth exhaust level, the controller 280 may control the rotation angle of the drive motor 151 to a third rotation angle so that the tilting angle of the second suction part 140 reaches a third tilting angle.

[0361] The third tilting angle may be larger than the second tilting angle. The second tilting angle may be larger than the first tilting angle.

[0362] As the tilting angle increases, the opening degree of the intake port of the second suction part may increase.

[0363] That is, when the received exhaust level is the third exhaust level, fourth exhaust level, or fifth exhaust level, the controller 280 may only adjust the tilting angle of the second intake port and control the rotation speeds of the first and second fan motors 112 and 122 to be the same as the third rotation speed.

[0364] When the received exhaust level is the third exhaust level, fourth exhaust level, or fifth exhaust level, the controller 280 may adjust the tilting angle of the second intake port and also adjust the rotation speeds of the first and second fan motors 112 and 122 based on the received exhaust level.

[0365] More specifically, when the received exhaust level is the third exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 to the third rotation speed, when the received exhaust level is the fourth exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 to the fourth rotation speed, and when the received exhaust level is the fifth exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the fifth rotation speed.

[0366] Here, the fifth rotation speed may be faster than the fourth rotation speed. The fourth rotation speed may be faster than the third rotation speed. The third rotation speed may be faster than the second rotation speed.

[0367] The controller 280 may, based on an exhaust OFF-command being received through the input device 231, control the first and second fan motors 112 and 122 to stop rotating and control the drive motor 151 so that the second suction part is accommodated inside the main body.

[0368] The controller 280 may, based on an exhaust OFF-command being received through the input device 231, control the lighting device 160 to be turned off.Automatic Exhaust Mode ControlExample 1

[0369] The controller 280 may, upon an exhaust ON-command being received through the input device 231, identify the exhaust mode received through the input device 231, and based on the identified exhaust mode being an automatic exhaust mode, determine the exhaust level based on at least one of contamination level information received from the contamination level sensor 260, image information received from the image sensor 261, or cooking information of the second cooking appliance 3 received through the communication device 270, and may control the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151 based on the determined exhaust level.

[0370] The controller 280 may control lighting of the lighting device 160 based on the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151, and may control the lighting device 160 to be turned off based on stopping of the first and second fan motors 112 and 122 and the drive motor 151.

[0371] The controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance based on at least one of image information received from the image sensor 261, cooking information of the second cooking appliance received from the communication device 270, and contamination level information received from a plurality of contamination level sensors 260a and 260b, and control exhaust based on position information of the identified cooking zone. This will be described with reference to FIGS. 14, 15, and 16.

[0372] As shown in FIG. 14, the controller 280 may identify a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance based on image information received from the image sensor 261, control the rotation speeds of the first and second fan motors 112 and 122 based on position information of the identified cooking zone, and may additionally control the tilting angle An of the second suction part 140 based on position information of the identified cooking zone.

[0373] The controlling of the tilting angle of the second suction part 140 may include controlling the rotation angle of the drive motor 151.

[0374] The image information received from the image sensor 261 may include thermal image information received from a thermal imaging sensor.

[0375] The controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance 3 based on temperature information received from a plurality of temperature sensors.

[0376] As shown in FIG. 15, the controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area based on cooking information of the second cooking appliance received from the communication device 270, control the rotation speeds of the first and second fan motors 112 and 122 based on position information of the identified cooking zone, and additionally control the tilting angle An of the second suction part 140 based on position information of the identified cooking zone.

[0377] As shown in FIG. 16, when a plurality of contamination level sensors 260a and 260b are provided, the controller 280 may also recognize a cooking zone in which food is being cooked among a plurality of cooking zones in the cooking area of the second cooking appliance based on contamination level information received from the plurality of contamination level sensors 260a and 260b, control the rotation speeds of the first and second fan motors 112 and 122 based on position information of the identified cooking zone, and additionally control the tilting angle An of the second suction part 140 based on position information of the identified cooking zone.

[0378] For example, when the identified cooking zone is in the front area of the cooking area, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 and control the tilting angle of the second suction part 140, and when the identified cooking zone is in the rear area of the cooking area, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 and control the tilting angle of the second suction part 140 to 0 degrees.

[0379] The opening degree of the intake port 145 of the second suction part 140 may be controlled by controlling the tilting angle An of the second suction part 140.

[0380] When controlling the rotation speeds of the first and second fan motors 112 and 122, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 to the second rotation speed when the identified cooking zone is in the front area of the cooking area,, may control the rotation speeds of the first and second fan motors 112 and 122 to the first rotation speed when the identified cooking zone is in the rear area of the cooking area, and may control the rotation speeds of the first and second fan motors 112 and 122 to the second rotation speed when the identified cooking zone is in both the front area and rear area of the cooking area.

[0381] When controlling the tilting angle of the second suction part 140, the controller 280 may also adjust the tilting angle based on the contamination level detected by the contamination level sensor 260. The opening degree of the intake port 145 of the second suction part 140 may be adjusted by adjusting the tilting angle An of the second suction part 140.

[0382] For example, the controller 280 may adjust the tilting angle to a first tilting angle when the contamination level detected by the contamination level sensor 260 is within a first reference contamination level range,, may adjust the tilting angle to a second tilting angle when the contamination level detected by the contamination level sensor 260 is within a second reference contamination level range, and may adjust the tilting angle to a third tilting angle when the contamination level detected by the contamination level sensor 260 is within a third reference contamination level range.

[0383] The embodiment may optimize suction and discharge capability by simultaneously drawing in contaminated air through the first and second suction parts when a cooking zone is present in the front area of the cooking area of the second cooking appliance, and intensively drawing in contaminated air through the first suction part when a cooking zone is present in the rear area of the cooking area of the second cooking appliance.Automatic Exhaust Mode ControlExample 2

[0384] The controller 280 may identify a contamination level of contaminated air based on contamination level information received from the contamination level sensor 260, determine the exhaust level based on the identified contamination level of contaminated air and a plurality of reference contamination level ranges, control the rotation speeds of the first and second fan motors 112 and 122 based on the determined exhaust level, and may control the tilting angle of the second suction part 140 based on the determined exhaust level.

[0385] For example, the plurality of reference contamination level ranges may include a first reference contamination level range, a second reference contamination level range, and a third reference contamination level range.

[0386] Contamination levels within the second reference contamination level range may be values lower than contamination levels within the third reference contamination level range and higher than contamination levels within the first reference contamination level range.

[0387] For example, when the identified contamination level of contaminated air is less than the minimum value of the first reference contamination level range, the controller 280 may control the first and second fan motors 112 and 122 to stop operating and control the drive motor 151 to stop operating.

[0388] For example, when the identified contamination level of contaminated air falls within the first reference contamination level range, the controller 280 may determine the exhaust level as the first exhaust level, when the identified contamination level of contaminated air falls within the second reference contamination level range, may determine the exhaust level as the second exhaust level, and when the identified contamination level of contaminated air falls within the third reference contamination level range, may determine the exhaust level as the third exhaust level.

[0389] For example, when the determined exhaust level is the first exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the first rotation speed and control the drive motor 151 to stop. When the determined exhaust level is the second exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the second rotation speed and control the drive motor 151 to step. When the determined exhaust level is the third exhaust level, the controller 280 may control the rotation speeds of the first and second fan motors 112 and 122 at the second rotation speed and control the rotation angle of the drive motor 151 to a preset rotation angle.

[0390] The controller 280 may also control the rotation speeds of the first and second fan motors 112 and 122 at the third rotation speed and control the rotation angle of the drive motor 151 to a preset rotation angle when the determined exhaust level is the third exhaust level. The preset rotation angle of the drive motor 151 may correspond to a preset tilting angle of the second suction part.Automatic Exhaust Mode ControlExample 3

[0391] The controller 280 may identify the state of the contamination level as an increasing state of contamination level based on an increase in the contamination level of air contamination being greater than a first reference value, and may identify the state of the contamination level as a decreasing state of contamination level based on a decrease in the contamination level of air contamination being greater than or equal to a second reference value. The controller 280 may identify the state of the contamination level as a maintained state of contamination level based on an increase in the contamination level of air contamination being less than the first reference value or a decrease in the contamination level of contaminated air being less than the second reference value.

[0392] The first reference value may include a first contamination level value or an increase rate of contamination level.

[0393] The second reference value may include a second contamination level value or a decrease rate of contamination level.

[0394] The controller 280 may determine the exhaust level for automatic exhaust control based on whether the identified contamination level of contaminated air is in an increasing state, maintained state, or decreasing state, may control the rotation speeds of the first and second fan motors 112 and 122 based on the determined exhaust level, and may control the tilting angle of the second suction part 140 based on the determined exhaust level.

[0395] The controlling of the tilting angle of the second suction part 140 may include controlling the rotation angle of the drive motor 151.

[0396] The controller 280 may recognize the rotation angle of the drive motor 151 based on position information received from the position sensor 156, and may control the drive motor 151 to maintain or stop the rotation thereof based on the identified rotation angle of the drive motor 151 so that the rotation angle of the drive motor 151 reaches a preset rotation angle.

[0397] The preset rotation angle may be a reference rotation angle of the drive motor.

[0398] Hereinafter, the configuration for controlling automatic exhaust in response to an increase and decrease of contamination level will be described in more detail.

[0399] The controller 280 may, based on an automatic exhaust mode being received through the input device 231, monitor contamination level information received from the contamination level sensor 260.

[0400] The controller 280 may identify whether the contamination level of the cooking area is equal to or higher than a reference contamination level based on the contamination level information received from the contamination level sensor 260.

[0401] The reference contamination level may be a contamination level for controlling on / off of a standby mode.

[0402] The controller 280 may control to enter a standby mode based on identifying that the contamination level of the cooking area is less than the reference contamination level. The standby mode may include stopping the first and second fan motors 112 and 122 and controlling the tilting angle of the second suction part at 140 to 0 degrees.

[0403] The controlling of the tilting angle of the second suction part at 140 to 0 degrees may include causing the intake port of the second suction part 140 to be accommodated inside the main body of the first cooking appliance.

[0404] The controlling of the tilting angle of the second suction part at 140 to 0 degrees may include controlling the intake port 145 of the second suction part 140 to be in a closed state.

[0405] The controller 280 may determine the exhaust level as the first exhaust level based on identifying that the contamination level of the cooking area is equal to or higher than the reference contamination level.

[0406] The controller 280 may control the exhaust level starting from the lowest first exhaust level at the time when the contamination level of the cooking area is identified as being equal to or higher than the reference contamination level. Through this, the first cooking appliance may gradually draw in contaminated air from the cooking area.

[0407] While performing automatic exhaust control at the determined exhaust level, the controller 280 may identify whether the contamination level of contaminated air in the cooking area is in an increasing state, a maintained state, or a decreasing state based on contamination level information received from the contamination level sensor 260.

[0408] While performing automatic exhaust control at the determined exhaust level, the controller 280 may recognize an exhaust level one level higher than the determined exhaust level and change the determined exhaust level to the recognized exhaust level based on the contamination level of contaminated air being identified as an increasing state. For example, when the determined exhaust level is the first exhaust level, the controller 280 may change the determined first exhaust level to the second exhaust level.

[0409] While performing automatic exhaust control at the determined exhaust level, the controller 280 may control the determined exhaust level to be maintained, based on the contamination level of contaminated air being identified as a maintained state. For example, when the determined exhaust level is the first exhaust level, the controller 280 may control the exhaust level for automatic exhaust control to be maintained as the first exhaust level.

[0410] While performing automatic exhaust control at the determined exhaust level, the controller 280 may recognize an exhaust level one level lower than the determined exhaust level and change the determined exhaust level to the recognized exhaust level based on the contamination level of contaminated air being identified as a decreasing state. For example, when the determined exhaust level is the second exhaust level, the controller 280 may change the determined second exhaust level to the first exhaust level.

[0411] The controller 280 may control the first and second fan motors 112 and 122 at the first rotation speed and may control the tilting angle of the second suction part 140 to 0 degrees based on the determined exhaust level being the first exhaust level.

[0412] The controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to 0 degrees based on the determined exhaust level being the second exhaust level.

[0413] Here, the second rotation speed may be faster than the first rotation speed. The second exhaust level may be a level higher than the first exhaust level by one level.

[0414] The controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle based on the determined exhaust level being the third exhaust level.

[0415] The preset tilting angle may be the maximum tilting angle.

[0416] The controlling of the tilting angle of the second suction part 140 to a preset tilting angle may include controlling the drive motor 151 to rotate in the first rotation direction by a preset rotation angle.

[0417] The controlling of the tilting angle of the second suction part 140 to a preset tilting angle may include causing the intake port of the second suction part to be exposed to the outside of the main body of the first cooking appliance.

[0418] The controlling of the tilting angle of the second suction part 140 to a preset tilting angle may include causing the second suction part 140 to protrude from the first panel of the main body of the first cooking appliance.

[0419] The controller 280 may form an air curtain on the front of the first cooking appliance by controlling the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle.

[0420] The controller 280 may form an air curtain on the door side of the first cooking appliance by controlling the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle. Through this, the embodiment may efficiently draw in contaminated air escaping from the cooking area to the outside.

[0421] The controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to 0 degrees based on a change from the third exhaust level to the second exhaust level.

[0422] The controlling of the tilting angle of the second suction part 140 to 0 degrees may include controlling the drive motor 151 to rotate in the second rotation direction.

[0423] The controlling of the tilting angle of the second suction part 140 to 0 degrees may include controlling the drive motor 151 to rotate in the second rotation direction by a preset rotation angle.

[0424] The controlling of the tilting angle of the second suction part 140 to 0 degrees may include changing the second suction part from an exposed state to an accommodated state.

[0425] While performing automatic exhaust control at the third exhaust level, the controller 280 may also control the first and second fan motors 112 and 122 at the third rotation speed higher than the second rotation speed based on the contamination level of contaminated air being in an increasing state.Automatic Exhaust Mode ControlExample 4

[0426] The controller 280 may also adjust the tilting angle of the second suction part 140 based on the increasing state, maintaining state, or decreasing state of the contamination level. In this case, the exhaust level may further include one or more exhaust levels higher than the third exhaust level. In the embodiment, an example in which a fourth exhaust level and a fifth exhaust level higher than the third exhaust level is present will be described.

[0427] The third exhaust level may be a preset exhaust level. The fourth exhaust level may be a level higher than the third exhaust level by one level and lower than the fifth exhaust level by one level.

[0428] When the determined exhaust level is equal to or higher than the preset exhaust level, the controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed based on the determined exhaust level and adjust the tilting angle of the second suction part 140. This will be described in more detail.

[0429] The controller 280 may, based on the exhaust level being the third exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle.

[0430] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle may include controlling the rotation angle of the drive motor 151 to the first rotation angle while controlling the driving motor 151 to rotate in the first rotation direction.

[0431] The controller 280 may, based on the exhaust level being the third exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle.

[0432] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the first tilting angle may include controlling the rotation angle of the drive motor 151 to the first rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0433] The controller 280 may, based on the exhaust level being the fourth exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the second tilting angle.

[0434] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the second tilting angle may include controlling the rotation angle of the drive motor 151 to the second rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0435] The controller 280 may, based on the exhaust level being the fifth exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to the third tilting angle.

[0436] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to the third tilting angle may include controlling the rotation angle of the drive motor 151 to the third rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0437] The second tilting angle may be larger than the first tilting angle and smaller than the third tilting angle.

[0438] The controller 280 may also recognize rotation speeds of the first and second fan motors corresponding to the contamination level of contaminated air, control the operation of the first and second fan motors at the identified rotation speeds, recognize the tilting angle of the second suction part corresponding to the contamination level of contaminated air, and control the drive motor 151 at the identified tilting angle.

[0439] The first cooking appliance according to the embodiment may rotate the first and second fan motors at the first rotation speed when performing an automatic exhaust mode, and rotate the first and second fan motors at the second rotation speed as the contamination level of contaminated air increases, thereby gradually increasing the rotation speeds of the first and second fan motors. Through this, the operation of the first cooking appliance may be performed stably.

[0440] As the tilting angle of the second suction part 140 increases, the opening degree of the intake port 145 of the second suction part 140 may increase. As the opening degree of the intake port 145 of the second suction part 140 increases, the proportion of contaminated air drawn into the second suction part 140 may increase, and the proportion of contaminated air drawn into the first suction part 130 may relatively decrease.

[0441] As shown in FIG. 17, when the proportion of contaminated air drawn into the second suction part 140 is A %, the proportion of contaminated air drawn into the first suction part 130 may be 100-A %. For example, when the proportion of contaminated air drawn into the second suction part 140 is 20% in response to the adjustment of the opening degree of the intake port 145 of the second suction part 140, the proportion of contaminated air drawn into the first suction part 130 may be 80%. As another example, when the proportion of contaminated air drawn into the second suction part 140 is 30% in response to the adjustment of the opening degree of the intake port 145 of the second suction part 140, the proportion of contaminated air drawn into the first suction part 130 may be 70%.

[0442] In the embodiment, only the ratio of the amount of contaminated air drawn into the second suction part 140 and the amount of air drawn into the first suction part changes according to the opening degree change of the intake port of the second suction part 140, and the total amount of contaminated air drawn through the first cooking appliance 2 may be the same. As described above, the embodiment may vary the ratio of the amounts of contaminated air drawn through the front and bottom of the first cooking appliance respectively through adjustment of the opening degree of the intake port of the second suction part 140.

[0443] The first cooking appliance according to the embodiment may guide contaminated air escaping outside the cooking area into the second suction part 140 while maintaining the size of the existing first cooking appliance 2, and accordingly may draw in contaminated air more efficiently.

[0444] FIG. 18A is a diagram showing density of carbon dioxide when the second suction part is retracted inside the main body, FIG. 18B is a diagram showing density of carbon dioxide when the second suction part is exposed to the outside of the main body, and FIG. 18C is a diagram showing velocity vectors of contaminated air when the second suction part is exposed to the outside of the main body.

[0445] As shown in FIGS. 18A, 18B, and 18C, the embodiment may allow an air curtain to be formed on the lower side of the door of the first cooking appliance by exposing the intake port 145 of the second suction part 140 to the outside of the main body so that contaminated air is drawn from the lower side of the door of the first cooking appliance. Through this, the embodiment may efficiently draw in contaminated air escaping from the cooking area to the outside.

[0446] The controller 280 may include at least one processor 281 that controls the operation of the first cooking appliance 2 and at least one memory 282 that stores programs and data for controlling the operation of the first cooking appliance 2.

[0447] The at least one processor 281 may include at least one memory that stores algorithms and program-type data for controlling the operation of components within the first cooking appliance 2, and one or more processor chips that perform the aforementioned operations using data stored in the at least one memory, or may include one or more processing cores.

[0448] The at least one processor 281 may process various types of data and various signals using instructions, data, programs, and / or software stored in the memory 282.

[0449] The at least one processor 281 may include one or more of a central processing device (CPU), a graphics processing device (GPU), an accelerated processing device (APU), a many integrated core (MIC), a digital signal processor (DSP), a neural processing device (NPU), a hardware accelerator, or a machine learning accelerator.

[0450] The memory 282 may store information about preset tilting angles, preset rotation angles, and preset exhaust levels.

[0451] The memory 282 may store information about movement distances of the second gear corresponding to rotation angles of the drive motor 151.

[0452] The memory 282 may store information about movement directions of the second gear corresponding to rotation directions of the drive motor 151.

[0453] The memory 282 may store information about rotation speeds of the first and second fan motors for each reference contamination level range.

[0454] The memory 282 may store information about rotation speeds of the first and second fan motors and tilting angles of the second suction part for each contamination level.

[0455] The memory 282 may store information about rotation speeds of the first and second fan motors and tilting angles of the second suction part for each exhaust level.

[0456] The memory 282 may store information about rotation angles of the drive motor 151 corresponding to tilting angles of the second suction part. The rotation angle of the drive motor 151 may include the number of rotations of the drive motor.

[0457] The memory 282 may store information about rotation directions of the drive motor corresponding to exposure and retraction of the second suction part 140.

[0458] The memory 282 may store data required for various embodiments.

[0459] The memory 282 may be implemented as an embedded memory type in the first cooking appliance 2 or as a detachable memory type to the first cooking appliance 2 according to data storage uses. For example, data for driving the first cooking appliance 2 may be stored in an embedded memory in the second cooking appliance 2, and data for extended functions of the first cooking appliance 2 may be stored in a detachable memory to the first cooking appliance 2.

[0460] Meanwhile, the embedded memory in the first cooking appliance 2 may be implemented as at least one of volatile memory (e.g., DRAM (dynamic RAM), SRAM (static RAM), or SDRAM (synchronous dynamic RAM), etc.), non-volatile memory (e.g., OTPROM (one time programmable ROM), PROM (programmable ROM), EPROM (erasable and programmable ROM), EEPROM (electrically erasable and programmable ROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash, etc.), hard drive, or solid state drive (SSD).

[0461] Also, the detachable memory to the first cooking appliance 2 may be implemented in forms such as memory cards (e.g., CF (compact flash), SD (secure digital), Micro-SD (micro secure digital), Mini-SD (mini secure digital), xD (extreme digital), MMC (multi-media card), etc.), external memory connectable to USB ports (e.g., USB memory), etc., but is not limited thereto.

[0462] The memory 282 may include one or more memory chips or one or more memory blocks.

[0463] At least one component may be added or deleted corresponding to the performance of the components of the first cooking appliance 2 shown in FIG. 13. Also, it will be easily understood by those skilled in the art that the mutual positions of the components may be changed corresponding to the performance or structure of the first cooking appliance 2.

[0464] Each component shown in FIG. 13 may be software and / or hardware components such as Field Programmable Gate Array (FPGA) and Application Specific Integrated Circuit (ASIC).

[0465] FIG. 19A and FIG. 19B are a control flowchart of automatic exhaust of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0466] The first cooking appliance identifies the contamination level of contaminated air generated during cooking of food by the second cooking appliance based on contamination level information detected by the contamination level sensor 260 (301).

[0467] The identifying of the contamination level of contaminated air generated during cooking of food by the second cooking appliance may include identifying the contamination level of contaminated air present in the cooking area of the cooking system.

[0468] The first cooking appliance may identify whether the contamination level of contaminated air is equal to or higher than the reference contamination level (302).

[0469] The first cooking appliance may perform a standby mode based on identifying that the contamination level of contaminated air is lower than the reference contamination level (303).

[0470] The standby mode may include stopping the first and second fan motors 112 and 122, accommodating the intake port of the second suction part 140 inside the main body of the first cooking appliance, and periodically monitoring the contamination level of contaminated air.

[0471] The first cooking appliance may determine the exhaust level as the first exhaust level based on identifying that the contamination level of contaminated air is equal to or higher than the reference contamination level (304).

[0472] The first cooking appliance performs automatic exhaust control corresponding to the first exhaust level based on the determined exhaust level being the first exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the first rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the determined exhaust level being the first exhaust level (305).

[0473] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include controlling the tilting angle of the second suction part 140 to 0 degrees.

[0474] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include allowing the intake port of the second suction part 140 to be accommodated inside the main body of the first cooking appliance.

[0475] While performing automatic exhaust control at the first exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (306). That is, while performing automatic exhaust control at the first exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0476] While performing automatic exhaust control at the first exhaust level, the first cooking appliance may determine the exhaust level as the second exhaust level based on the contamination level being identified as an increasing state (307, 308). That is, the first cooking appliance changes the exhaust level in the automatic mode from the first exhaust level to the second exhaust level.

[0477] The first cooking appliance performs automatic exhaust control corresponding to the second exhaust level based on the determined exhaust level being the second exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the exhaust level being determined as the second exhaust level (309).

[0478] Here, the second rotation speed may be faster than the first rotation speed. The second exhaust level may be a level higher than the first exhaust level by one level.

[0479] While performing automatic exhaust control at the first exhaust level, the first cooking appliance may control to enter a standby mode based on the contamination level being identified as a decreasing state (310).

[0480] While performing automatic exhaust control at the first exhaust level, the first cooking appliance may control to maintain the exhaust level as the first exhaust level based on the contamination level being maintained.

[0481] While performing automatic exhaust control at the second exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (311). That is, while performing automatic exhaust control at the second exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0482] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level being identified as an increasing state (312, 313). That is, the first cooking appliance changes the exhaust level from the second exhaust level to the third exhaust level.

[0483] The first cooking appliance performs automatic exhaust control corresponding to the third exhaust level based on the determined exhaust level being the third exhaust level. More specifically, the controller 280 may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle based on the exhaust level being determined as the third exhaust level (314).

[0484] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle may include controlling the drive motor 151 to rotate in the first rotation direction by a preset rotation angle.

[0485] The controlling of the tilting angle of the intake port 145 of the second suction part 140 to a preset tilting angle may include allowing the intake port 145 of the second suction part 140 to be exposed to the outside of the main body 200 of the first cooking appliance.

[0486] The controlling of the tilting angle of the intake port 145 to a preset tilting angle may include identifying the rotation angle of the drive motor 151 based on position information received from the position sensor 156, controlling to maintain rotation of the drive motor 151 based on the identified rotation angle of the drive motor 151 being less than the preset rotation angle, and controlling to stop rotation of the drive motor based on the identified rotation angle of the drive motor 151 reaching the preset rotation angle.

[0487] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may determine the exhaust level as the first exhaust level based on the contamination level being identified as a decreasing state. That is, the first cooking appliance changes the exhaust level from the second exhaust level to the first exhaust level.

[0488] The first cooking appliance performs automatic exhaust control corresponding to the first exhaust level based on the determined exhaust level being the first exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the first rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the exhaust level being changed to the first exhaust level.

[0489] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may control to maintain the exhaust level as the second exhaust level based on the contamination level being maintained.

[0490] While performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (316). That is, while performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0491] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the second exhaust level based on the contamination level being identified as a decreasing state (317, 308). That is, the first cooking appliance changes the exhaust level from the third exhaust level to the second exhaust level. The first cooking appliance performs automatic exhaust control corresponding to the second exhaust level based on the determined exhaust level being the second exhaust level.

[0492] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level not being in a decreasing state (313).

[0493] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may control to maintain the exhaust level as the third exhaust level based on the contamination level being maintained.

[0494] The first cooking appliance performs automatic exhaust control corresponding to the third exhaust level based on the determined exhaust level being the third exhaust level.

[0495] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may control to maintain the exhaust level as the third exhaust level based on the contamination level being identified as an increasing state. In this case, the first cooking appliance may also increase the rotation speeds of the first and second fan motors from the second rotation speed to the third rotation speed.

[0496] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may also recognize rotation speeds of the first and second fan motors for preventing increase of the contamination level based on the identified contamination level and control the first and second fan motors based on the identified rotation speeds of the first and second fan motors.

[0497] The first cooking appliance may repeat the process of periodically identifying the contamination level of contaminated air during automatic exhaust control and controlling the rotation speeds of the first and second fan motors and the tilting angle of the second suction part 140 while changing the exhaust level based on the identified contamination level of contaminated air.

[0498] The first cooking appliance according to the embodiment may rotate the first and second fan motors at low speed when performing automatic exhaust mode and gradually increase the rotation speeds of the first and second fan motors to high speed as the contamination level increases, thereby ensuring stable operation of the first cooking appliance.

[0499] FIG. 20A and FIG. 20B are a control flowchart of tilting angle of a second suction part of the first cooking appliance equipped with the exhaustion apparatus according to an embodiment of the present disclosure.

[0500] A control configuration of the first cooking appliance when there are third, fourth, and fifth exhaust levels for adjusting the tilting angle of the intake port 145 of the second suction part 140 will be described.

[0501] The fourth exhaust level and fifth exhaust level may be levels higher than the third exhaust level. The fifth exhaust level may be a level higher than the fourth exhaust level.

[0502] While performing automatic exhaust control at the second exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level being identified as an increasing state.

[0503] The first cooking appliance may, based on the exhaust level being determined as the third exhaust level, control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the first tilting angle (321, 322).

[0504] The controlling of the tilting angle of the second suction part 140 to the first tilting angle may include controlling the rotation angle of the drive motor 151 by the first rotation angle while controlling the drive motor 151 in the first rotation direction.

[0505] The controlling of the tilting angle of the second suction part 140 to the first tilting angle may include allowing the intake port of the second suction part 140 to be exposed to the outside of the main body by the first tilting angle.

[0506] The controlling of the tilting angle of the intake port 145 to the first tilting angle may include identifying the rotation angle of the drive motor 151 based on position information received from the position sensor 156, controlling to maintain rotation of the drive motor 151 based on the identified rotation angle of the drive motor 151 being less than the first rotation angle, and controlling to stop rotation of the drive motor based on the identified rotation angle of the drive motor 151 reaching the first rotation angle.

[0507] While performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (323). That is, while performing automatic exhaust control at the third exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0508] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the fourth exhaust level based on the contamination level being identified as an increasing state (324, 325). That is, the first cooking appliance changes the exhaust level from the third exhaust level to the fourth exhaust level.

[0509] The first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the second tilting angle based on the exhaust level being determined as the fourth exhaust level (326).

[0510] The controlling of the tilting angle of the second suction part 140 to the second tilting angle may include controlling the rotation angle of the drive motor 151 to the second rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0511] The controlling of the tilting angle of the second suction part 140 to the second tilting angle may include allowing the intake port of the second suction part 140 to the exposed to the outside of the main body by the second tilting angle.

[0512] The controlling of the tilting angle of the intake port 145 to the second tilting angle may include identifying the rotation angle of the drive motor 151 based on position information received from the position sensor 156, controlling to maintain rotation of the drive motor 151 based on the identified rotation angle of the drive motor 151 being less than the second rotation angle, and controlling to stop rotation of the drive motor based on the identified rotation angle of the drive motor 151 reaching the second rotation angle.

[0513] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may determine the exhaust level as the second exhaust level based on the contamination level being identified as a decreasing state (327). That is, the first cooking appliance changes the exhaust level from the third exhaust level to the second exhaust level.

[0514] The first cooking appliance performs automatic exhaust control corresponding to the second exhaust level based on the determined exhaust level being the second exhaust level. More specifically, the first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the initial tilting angle based on the exhaust level being determined as the second exhaust level.

[0515] That is, while performing automatic exhaust control at the third exhaust level, the first cooking appliance may control the rotation speeds of the first and second fan motors and control the tilting angle of the second suction part 140 to the initial tilting angle, based on the contamination level being identified as a decreasing state (328).

[0516] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include controlling the drive motor 151 to rotate in the second rotation direction by the first rotation angle.

[0517] The controlling of the tilting angle of the second suction part 140 to the initial tilting angle may include allowing the intake port of the second suction part 140 to be retracted to the inside of the main body 200.

[0518] While performing automatic exhaust control at the third exhaust level, the first cooking appliance may control to maintain the exhaust level as the third exhaust level based on the contamination level being identified as a maintained state.

[0519] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (329). That is, while performing automatic exhaust control at the fourth exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0520] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance may determine the exhaust level as the fifth exhaust level based on the contamination level being identified as an increasing state (330, 331). That is, the first cooking appliance changes the exhaust level from the fourth exhaust level to the fifth exhaust level.

[0521] The first cooking appliance may control the first and second fan motors 112 and 122 at the second rotation speed and may control the tilting angle of the second suction part 140 to the third tilting angle, based on the exhaust level being determined as the fifth exhaust level (332).

[0522] The controlling of the tilting angle of the second suction part 140 to the third tilting angle may include controlling the rotation angle of the drive motor 151 to the third rotation angle while controlling the drive motor 151 to rotate in the first rotation direction.

[0523] The third tilting angle may be larger than the second tilting angle. The second tilting angle may be larger than the first tilting angle.

[0524] As the tilting angle of the second suction part increases, the opening degree of the intake port of the second suction part may increase.

[0525] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance may determine the exhaust level as the third exhaust level based on the contamination level being identified as a decreasing state (333). That is, the first cooking appliance changes the exhaust level from the fourth exhaust level to the third exhaust level.

[0526] While performing automatic exhaust control at the fourth exhaust level, the first cooking appliance may maintain the exhaust level as the fourth exhaust level based on the contamination level being identified as a maintained state.

[0527] While performing automatic exhaust control at the fifth exhaust level, the first cooking appliance identifies the state of the contamination level based on contamination level information received from the contamination level sensor 260 (334). That is, while performing automatic exhaust control at the fifth exhaust level, the first cooking appliance identifies whether the contamination level is in an increasing state, decreasing state, or maintained state.

[0528] While performing automatic exhaust control at the fifth exhaust level, the first cooking appliance may determine the exhaust level as the fourth exhaust level based on the contamination level being identified as a decreasing state (335). That is, the first cooking appliance changes the exhaust level from the fifth exhaust level to the fourth exhaust level.

[0529] While performing automatic exhaust control at the fifth exhaust level, the first cooking appliance may maintain the exhaust level as the fifth exhaust level based on the contamination level not being identified as a decreasing state.

[0530] The first cooking appliance may repeat adjustment of the tilting angle of the second suction part 140 based on the increasing, maintaining, and decreasing states of the contamination level.

[0531] The first cooking appliance may adjust the opening degree of the intake port 145 of the second suction part 140 by adjusting the tilting angle of the second suction part 140 based on whether the contamination level of the cooking area increases and decreases.

[0532] The first cooking appliance may adjust the amount of contaminated air drawn into the intake port 145 of the second suction part 140 according to adjustment of the opening degree of the intake port 145 of the second suction part 140.

[0533] As the proportion of the amount of contaminated air drawn into the intake port 145 of the second suction part 140 increases, the proportion of the amount of air drawn into the first suction part may decrease.

[0534] In the embodiment, only the ratio of the amount of contaminated air drawn into the second suction part 140 and the amount of air drawn into the first suction part changes according to the opening degree change of the intake port of the second suction part 140, and the total amount of contaminated air drawn through the first cooking appliance 2 may be the same. As described above, the embodiment may vary the ratio of the amounts of contaminated air drawn through the front and bottom of the first cooking appliance respectively through adjustment of the opening degree of the intake port of the second suction part 140.

[0535] Meanwhile, the disclosed embodiments may be embodied in the form of a recording medium storing instructions executable by a computer. The instructions may be stored in the form of program code and, when executed by a processor, may generate a program module to perform the operations of the disclosed embodiments. The recording medium may be embodied as a computer-readable recording medium.

[0536] The computer-readable recording medium includes all kinds of recording media in which instructions which may be decoded by a computer are stored, for example, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, and the like.

[0537] Although embodiments of the present disclosure have been described with reference to the accompanying drawings, those skilled in the art will appreciate that these inventive concepts may be embodied in different forms without departing from the scope and spirit of the disclosure, and should not be construed as limited to the embodiments set forth herein.

Examples

example 1

[0369]The controller 280 may, upon an exhaust ON-command being received through the input device 231, identify the exhaust mode received through the input device 231, and based on the identified exhaust mode being an automatic exhaust mode, determine the exhaust level based on at least one of contamination level information received from the contamination level sensor 260, image information received from the image sensor 261, or cooking information of the second cooking appliance 3 received through the communication device 270, and may control the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151 based on the determined exhaust level.

[0370]The controller 280 may control lighting of the lighting device 160 based on the operation of at least one of the first and second fan motors 112 and 122 or the drive motor 151, and may control the lighting device 160 to be turned off based on stopping of the first and second fan motors 112 and 122 and ...

example 2

[0384]The controller 280 may identify a contamination level of contaminated air based on contamination level information received from the contamination level sensor 260, determine the exhaust level based on the identified contamination level of contaminated air and a plurality of reference contamination level ranges, control the rotation speeds of the first and second fan motors 112 and 122 based on the determined exhaust level, and may control the tilting angle of the second suction part 140 based on the determined exhaust level.

[0385]For example, the plurality of reference contamination level ranges may include a first reference contamination level range, a second reference contamination level range, and a third reference contamination level range.

[0386]Contamination levels within the second reference contamination level range may be values lower than contamination levels within the third reference contamination level range and higher than contamination levels within the first re...

example 3

[0391]The controller 280 may identify the state of the contamination level as an increasing state of contamination level based on an increase in the contamination level of air contamination being greater than a first reference value, and may identify the state of the contamination level as a decreasing state of contamination level based on a decrease in the contamination level of air contamination being greater than or equal to a second reference value. The controller 280 may identify the state of the contamination level as a maintained state of contamination level based on an increase in the contamination level of air contamination being less than the first reference value or a decrease in the contamination level of contaminated air being less than the second reference value.

[0392]The first reference value may include a first contamination level value or an increase rate of contamination level.

[0393]The second reference value may include a second contamination level value or a decr...

Claims

1. An exhaustion apparatus comprising:a main body including a plurality of panels;a fan inside the main body and configured to draw air in to the main body and discharge, from the main body, the air that is drawn in;a first suction part in a first area of a first panel among the plurality of panels, the first suction part configured to guide a flow of air drawn in from the first area by the fan;a second suction part in a second area of the first panel that is forward of the first area relative to a front of the main body, the second suction part configured to rotate relative to the main body such that the second suction part is tiltable relative to the main body, and to guide a flow of air drawn in from the second area by the fan; anda drive assembly configured to:rotate the second suction part relative to the main body such that the second suction part is tilted relative to the main body and at least a portion of the second suction part is protruded from the main body, androtate the second suction part relative to the main body such that the portion protruded from the main body is retracted to the main body.

2. The exhaustion apparatus of claim 1, whereinthe drive assembly includes:a drive motor,a gear connected to the drive motor and configured to convert a rotational motion of the drive motor into a translational motion, anda connecting rod between the gear and the second suction part, the connecting rod configured to be moved by movement of the gear and based on a force applied to the connecting rod by the movement of the gear, transmit the applied force to the second suction part.

3. The exhaustion apparatus of claim 2, wherein:a direction of the force transmitted to the second suction part by the connecting rod is determined by a rotation direction of the drive motor, andprotrusion and retraction of an intake port of the second suction part relative to the main body is determined by the rotation direction of the drive motor.

4. The exhaustion apparatus of claim 1, further comprising:a sensor configured to:detect a contamination level of the air that is drawn in to the main body by the fan, andoutput data corresponding to the detected contamination level; anda controller configured to control a rotation speed of the fan and a tilting angle of the second suction part based on data output by the sensor.

5. The exhaustion apparatus of claim 4, wherein the controller is further configured to increase the rotation speed of the fan based on an increase in the contamination level detected by the sensor.

6. The exhaustion apparatus of claim 4, wherein the controller is further configured to increase the tilting angle of the second suction part based on an increase in the contamination level detected by the sensor.

7. A cooking appliance comprising:a main body including a cooking chamber;a door configured to open and close the cooking chamber;a fan in a space between the main body and the cooking chamber and configured to draw air in to the main body and discharge, from the main body, the air that is drawn in;a first suction part in a first area of a panel on a bottom side of the main body, the first suction part configured to guide a flow of air drawn in from the first area by the fan;a second suction part in a second area of the panel that is forward of the first area relative to a front of the main body, the second suction part configured to rotate relative to the main body such that the second suction part is tilted relative to the main body, and to guide a flow of air drawn in from the second area by the fan; anda drive assembly configured to:rotate the second suction part relative to the main body such that the second suction part is tilted relative to the main body and at least a portion of the second suction part is protruded from the main body, androtate the second suction part relative to the main body such that the portion protruded from the main body is retracted to the main body.

8. The cooking appliance of claim 7, whereinthe drive assembly includes:a drive motor,a gear connected to the drive motor and configured to convert a rotational motion of the drive motor into a translational motion, anda connecting rod between the gear and the second suction part, the connecting rod configured to be moved by movement of the gear and based on a force applied to the connecting rod by the movement of the gear, transmit the applied force to the second suction part,a direction of the force transmitted to the second suction part by the connecting rod is determined by a rotation direction of the drive motor, andprotrusion and retraction of an intake port of the second suction part relative to the main body is determined by the rotation direction of the drive motor.

9. The cooking appliance of claim 7, further comprising:a sensor configured to:detect a contamination level of the air that is drawn in to the main body by the fan, andoutput data corresponding to the detected contamination level; anda controller configured to control a rotation speed of the fan and a tilting angle of the second suction part based on data output by the sensor.

10. The cooking appliance of claim 9, wherein the controller is further configured to increase the rotation speed of the fan based on an increase in the contamination level detected by the sensor.

11. The cooking appliance of claim 9, wherein the controller is further configured to increase the tilting angle of the second suction part based on an increase in the contamination level detected by the sensor.

12. The cooking appliance of claim 9, further comprising:a communication device configured to communicate with another cooking appliance that is below the main body,wherein the controller is further configured to:identify a cooking zone of the another cooking appliance based on cooking information received, through the communication device, from the another cooking appliance, andcontrol rotation of the second suction part based on a position of the identified cooking zone.

13. The cooking appliance of claim 9, whereinthe sensor is a first sensor and the cooking appliance further includes a second sensor,the first sensor is in the first area of the panel and the second sensor is in the second area of the panel,the first sensor is configured to:detect a contamination level of air that is drawn in the first area by the fan, andoutput data corresponding to the detected contamination level of air drawn in the first area,the second sensor is configured to:detect a contamination level of air that is drawn in the second area by the fan, andoutput data corresponding to the detected contamination level of air drawn in the second area, andthe controller is further configured to control rotation of the second suction part based on the data output by the first sensor and the data output by the second sensor.

14. The cooking appliance of claim 9, further comprising:an image sensor configured to obtain an image of another cooking appliance that is below the main body,wherein the controller is further configured to:identify a cooking zone of the another cooking appliance based on the obtained image, andcontrol rotation of the second suction part based on a position of the identified cooking zone.

15. The cooking appliance of claim 9, further comprising:an input device configured to receive a user input,wherein the controller is further configured to:based on a manual mode and an exhaust level being received through the input device,control a rotation speed of the fan, andcontrol rotation of the second suction part.

Images