Cooking appratus and method for controlling same

Abstract

This cooking apparatus comprises: a main body including a cooking chamber; a first heat source provided in the cooking chamber so as to generate radiant heat; a second heat source provided in the cooking chamber so as to generate convection heat; a microwave radiation unit for generating microwaves inside the cooking chamber; an electric chamber which is partitioned from the cooking chamber and in which the microwave radiation unit is accommodated; a cooling fan for suctioning external air and discharging same into the electric chamber so as to cool the electric chamber; a guide duct for guiding, into the cooking chamber, the air discharged from the cooling fan; and an opening / closing device for opening / closing the guide duct.

Description

Cooking appliance and control method thereof

[0001] The present disclosure relates to a cooking appliance, and more specifically, to a cooking appliance and a method for controlling the same.

[0002] A cooking appliance refers to a device used to heat and cook a target object, such as food, and is capable of providing various cooking-related functions, such as heating, thawing, drying, and sterilization of the target object. Examples of such cooking appliances include ovens, such as gas ovens or electric ovens; microwave heating devices (hereinafter referred to as microwaves); gas ranges; electric ranges; gas grills; or electric grills.

[0003] Generally, an oven is a device that cooks food by directly transferring heat to the food or heating the interior of the cooking chamber through a heat-generating source such as a heater, whereas a microwave oven is a device that cooks food using intermolecular frictional heat generated by disrupting the molecular arrangement of the food with high frequency as a heat source.

[0004] In addition, cooking appliances equipped with two or more different types of heating sources that can cook different types of food simultaneously have recently been released.

[0005] One aspect of the present disclosure provides a cooking appliance with improved cooking performance.

[0006] One aspect of the present disclosure provides a cooking appliance that can shorten the cooking time.

[0007] The technical problems to be solved in this document are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] A cooking device according to the concept of the present disclosure comprises: a main body including a cooking chamber; a first heat source provided in the cooking chamber to generate radiant heat; a second heat source provided in the cooking chamber to generate convective heat; a microwave radiating unit that generates microwaves inside the cooking chamber; an electrical chamber partitioned from the cooking chamber and accommodating the microwave radiating unit; a cooling fan that sucks in external air and discharges it into the electrical chamber to cool the electrical chamber; a guide duct provided to guide the air discharged from the cooling fan into the cooking chamber; and an opening and closing device provided to open and close the guide duct.

[0009] A method of control of a cooking device according to the concept of the present disclosure comprises: a main body including a cooking chamber; a first heat source provided in the cooking chamber to generate radiant heat; a second heat source provided in the cooking chamber to generate convective heat; a microwave radiating unit that generates microwaves inside the cooking chamber; an electrical chamber partitioned from the cooking chamber and accommodating the microwave radiating unit; a cooling fan that sucks in external air and discharges it into the electrical chamber to cool the electrical chamber; and a guide duct provided to guide the air discharged from the cooling fan into the cooking chamber. The method comprises driving the first heat source, the second heat source, and the cooling fan based on the fact that an air fryer mode among a plurality of modes has started, and closing the guide duct.

[0010] According to one example, the cooking performance of a cooking appliance can be improved.

[0011] According to one example, the cooking speed of a cooking appliance can be shortened.

[0012] According to one example, in the air fryer mode of a cooking appliance, heat loss can be minimized by introducing cold air into the cooking chamber.

[0013] According to one example, in the air fryer mode of a cooking appliance, it is possible to prevent the surface temperature of the main body and the temperature of internal parts from rising.

[0014] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0015] FIG. 1 is a perspective view of a cooking device according to one embodiment.

[0016] Figure 2 is an exploded view showing a disassembled part of the cooking appliance illustrated in Figure 1.

[0017] Figure 3 is a cross-sectional view of the cooking appliance shown in Figure 1.

[0018] Figure 4 is an exploded view of the cooking appliance shown in Figure 1.

[0019] FIG. 5 is a drawing showing an opening and closing device of a cooking appliance according to one embodiment.

[0020] FIG. 6 is an exploded perspective view showing an opening and closing device installed in a guide duct of a cooking appliance according to one embodiment.

[0021] FIG. 7 is a diagram showing the air flow state due to the inflow of outside air when a guide duct is opened by an opening / closing device according to one embodiment.

[0022] FIG. 8 is a drawing showing the operating state of the switching device illustrated in FIG. 7.

[0023] Figure 9 is a diagram showing air flow caused by the operation of the opening and closing device shown in Figure 8.

[0024] FIG. 10 is a diagram showing the air flow state due to the inflow of outside air when the guide duct is closed by an opening and closing device according to one embodiment.

[0025] FIG. 11 is a drawing showing the operating state of the switching device illustrated in FIG. 10.

[0026] FIG. 12 is a diagram showing air flow caused by the operation of the opening and closing device shown in FIG. 10.

[0027] FIG. 13 illustrates a control block diagram of a cooking device according to one embodiment.

[0028] FIG. 14 is a flowchart illustrating whether a guide duct is opened according to the driving mode of a cooking appliance according to one embodiment.

[0029] FIG. 15 is a flowchart for explaining the operation of the components of a cooking appliance when the cooking appliance according to one embodiment operates in air fryer mode.

[0030] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0031] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0032] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0033] In this document, each of the phrases 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 with the corresponding phrase, or all possible combinations thereof.

[0034] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0035] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0036] Where any (e.g., first) component is referred to as “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicationly,” it means that said any component may be connected to said other component directly (e.g., by wire), wirelessly, or through a third component.

[0037] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0038] When it is said that a component is “connected,” “combined,” “supported,” or “contacted” with another component, this includes not only cases where the components are directly connected, combined, supported, or contacted, but also cases where they are indirectly connected, combined, supported, or contacted through a third component.

[0039] When it is said that a component is located "on" another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components.

[0040] *21 Meanwhile, terms such as "front," "rear," "left," and "right" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0041] For example, referring to FIG. 1, the X direction can be referred to as the front-back direction, the Y direction as the left-right direction, and the Z direction as the up-down direction. For example, referring to FIG. 1, the direction in which the door (20) of the cooking appliance (1) faces can be defined as the front (+X direction), and the opposite direction can be defined as the rear (-X direction).

[0042] It should be understood that the blocks of each flowchart and combinations of flowcharts can be executed by one or more computer programs containing instructions. One or more computer programs as a whole may be stored in a single memory device, or one or more computer programs may be divided so that different parts are stored in multiple different memory devices.

[0043] Any of the functions or operations described in this specification may be processed by a single processor or a combination of processors. A single processor or a combination of processors is a circuit that performs processing and includes circuits such as an application processor (AP, e.g., a central processing unit (CPU)), a communication processor (CP, e.g., a modem), a graphics processing unit (GPU), a neural processing unit (NPU) (e.g., an artificial intelligence (AI) chip), a wireless fidelity (Wi-Fi) chip, a Bluetooth® chip, a satellite positioning system (GPS) chip, a near-field communication (NFC) chip, connectivity chips, a sensor controller, a touch controller, a fingerprint sensor controller, a display driver integrated circuit (IC), an audio codec chip, a universal serial bus (USB) controller, a camera controller, an image processing IC, a microprocessor unit (MPU), a system-on-chip (SoC), an IC, etc.

[0044] The embodiments described in this specification will be explained in detail below with reference to the attached drawings.

[0045] FIG. 1 is a perspective view of a cooking appliance according to one embodiment. FIG. 2 is an exploded view showing a part of the cooking appliance shown in FIG. 1. FIG. 3 is a cross-sectional view of the cooking appliance shown in FIG. 1. FIG. 4 is an exploded view of the cooking appliance shown in FIG. 1. FIG. 5 is a drawing showing an opening and closing device of a cooking appliance according to one embodiment.

[0046] As illustrated in FIGS. 1 to 5, the cooking device (1) may include a main body (10) and a door (20) coupled to the front of the main body (10).

[0047] A cooking room (30) and an electrical room (40) may be provided inside the main body (10).

[0048] The main body (10) may include an outer cabinet (11) and an inner cabinet (12). The inner cabinet (12) may be provided on the inner side of the outer cabinet (11).

[0049] The outer cabinet (11) may be provided to cover at least a portion of the inner cabinet (12). For example, the outer cabinet (11) may include a cover frame (11a) and a bottom plate (11b). The cover frame (11a) and the bottom plate (11b) may be provided as separate components and combined. Alternatively, the cover frame (11a) and the bottom plate (11b) may be formed as a single unit.

[0050] The inner cabinet (12) may include an upper plate (12a), a side plate (12b), and a lower plate (12c). For example, the upper plate (12a), the side plate (12b), and the lower plate (12c) may be provided as separate components and combined. Alternatively, the upper plate (12a), the side plate (12b), and the lower plate (12c) may be formed as a single unit.

[0051] The side plate (12b) may be referred to as a side wall. The side plate (12b) may be referred to as a left wall and / or a right wall.

[0052] For example, the main body (10) may include a front plate (13) provided at the front of the internal cabinet (12). The main body (10) may include a rear plate (14) provided at the rear of the internal cabinet (12).

[0053] The front plate (13) may include an opening (13a). The opening (13a) may be provided so that the front of the cooking chamber (30) is open. A user can access the cooking chamber (30) through the opening (13a).

[0054] An air intake (71) may be formed in the rear plate (14). The air intake (71) may be formed in at least a part of the rear plate (14). The air intake (71) may be formed in at least a part of the rear plate (14) corresponding to the electrical room (40). Air may be introduced into the interior of the main body (10) through the air intake (71). The air introduced into the interior of the main body (10) through the air intake (71) may cool the electrical room (40).

[0055] The electrical room (40) may be provided to accommodate electrical components for operating the cooking device (1). For example, the electrical room (40) may be provided on one side of the cooking room (30). However, it is not limited thereto, and the electrical room (40) may be provided on the upper side of the cooking room (30).

[0056] The door (20) may be provided to open and close the cooking chamber (30). The door (20) may be rotatably connected to the main body (10).

[0057] The door (20) may include a door projection (22) provided to be connectable to the main body (10). The door projection (22) may be formed at the rear of the door (20). The door projection (22) may protrude toward the main body (10).

[0058] The door projection (22) may be provided to be coupled to a locking portion (not shown) of the front plate (13). The door projection (22) may pass through the locking portion (not shown) of the front plate (13) and be secured to a latch assembly (not shown) provided inside the main body (10).

[0059] The door (20) may further include a choke (not shown) to shield or reduce electromagnetic leakage. The door (20) may further include a viewing window (23) to allow visual inspection of the cooking process.

[0060] A front cover portion (18) may be provided on the side of the main body (10). For example, the front cover portion (18) may be located on one side of the front plate (13) and may be provided to cover the front of the electrical room (40).

[0061] An operating unit (18a) may be provided on the front cover portion (18). The operating unit (18a) may be provided to receive user input. The operating unit (18a) may be provided to display the operating status of the cooking device (1), etc. For example, the operating unit (18a) may include at least one of a touch panel and a display panel. For example, although not shown in the drawing, the operating unit (18a) may include at least one of a button or a knob.

[0062] The cooking device (1) may further include a button (18b) mounted on the front cover portion (18). The cooking device (1) may be configured to open the door (20) by operating the button (18b) when the door (20) is in a position that closes the cooking chamber (30).

[0063] The cooking room (30) can be provided as a space where food is cooked. The cooking room (30) can be formed by an internal cabinet (12). For example, the cooking room (30) can be formed by an internal cabinet (12), a front plate (13), and a rear plate (14).

[0064] The cooking device (1) may include a tray (34) placed inside the cooking chamber (30) to accommodate a cooking object. The tray (34) may be rotatably arranged inside the cooking chamber (30) so that food placed on the tray (34) can be heated uniformly.

[0065] The cooking chamber (30) may be configured to cook food by at least one heating source. For example, the heating source may include a microwave radiating unit (52) that supplies microwaves (electromagnetic waves) to the food. For example, the microwave radiating unit (52) may be a magnetron. The microwave radiating unit (52) may be referred to as an electromagnetic wave generating device. For example, the microwave radiating unit (52) may be coupled to the side wall of the cooking chamber (30). For example, the microwave radiating unit (52) may be connected to the side plate (12b) forming the cooking chamber (30).

[0066] Microwaves generated from the microwave radiating unit (52) can be guided into the cooking chamber (30) through the wave guide (55). For example, the wave guide (55) can be connected to the side wall of the cooking chamber (30). For example, the wave guide (55) can be connected to the side plate (12b) forming the cooking chamber (30). For example, one side of the wave guide (55) can be connected to the microwave radiating unit (52), and the other side of the wave guide (55) can be connected to the cooking chamber (30). For example, the other side of the wave guide (55) can be connected to the side plate (12b) forming the cooking chamber (30).

[0067] A microwave inlet (56) may be provided in the cooking chamber (30) to which microwaves guided from a wave guide (55) are introduced. For example, a microwave inlet (56) may be formed on the right wall of the cooking chamber (30). Electromagnetic waves introduced into the cooking chamber (30) through the microwave inlet (56) can cook food while resonating within the cooking chamber (30).

[0068] In the electrical room (40), a high voltage transformer (HVT) (53) for driving the microwave radiation unit (52), a high voltage capacitor (54), and a circuit board (58) may be provided.

[0069] The cooking device (1) may include a cooling fan (70) provided for the introduction of air to cool the cooking chamber (30) and / or the electrical chamber (40). The cooling fan (70) may be provided in the main body (10). For example, the cooling fan (70) may be provided to cool the cooking chamber (30). For example, the cooling fan (70) may be provided to cool the internal components of the electrical chamber (40).

[0070] A cooling fan (70) may be provided inside the main body (10). A cooling fan (70) may be located in the electrical room (40). A cooling fan (70) may be provided on the rear plate (14) forming the electrical room (40). A cooling fan (70) may be provided in an air intake (71) formed to introduce external air into the electrical room (40). A cooling fan (70) may be located in an air intake (71) formed on the rear plate (14) to introduce external air into the electrical room (40). The cooling fan (70) can lower the temperature of the electrical components housed in the electrical room (40). By lowering the temperature of the electrical components in the electrical room (40) through the cooling fan (70), malfunctions or breakdowns of the electrical components can be prevented.

[0071] The cooking device (1) may include a guide duct (90) provided to guide external air introduced into the electrical room (40) through a cooling fan (70) into the cooking room (30). The guide duct (90) may be provided in the electrical room (40). The guide duct (90) may be provided to cool the cooking room (30). For example, the guide duct (90) may be provided to cool the cooking room (30) by guiding external air introduced through the cooling fan (70) into the cooking room (30).

[0072] External air introduced through the cooling fan (70) can be guided into the cooking chamber (30) through the guide duct (90). For example, the guide duct (90) can be attached to the side wall of the cooking chamber (30). For example, the guide duct (90) can be connected to the side plate (12b) forming the cooking chamber (30). For example, one side of the guide duct (90) can be connected to a communication hole (31) formed in the side plate (12b) of the cooking chamber (30). For example, a sealing member (98) can be provided between the guide duct (90) and the cooking chamber (30). For example, the sealing member (98) can be provided so that the air guided through the guide duct (90) can be introduced into the cooking chamber (30) through the communication hole (31).

[0073] A plurality of communication holes (31) may be provided in the cooking chamber (30) of the cooking device (1). Inside the cooking chamber (30), communication holes (31) may be provided for air guided from the guide duct (90) to flow in. For example, the communication holes (31) may be formed on the right wall of the cooking chamber (30). For example, the communication holes (31) may be provided on the side plate (12b) of the cooking chamber (30). For example, the communication holes (31) may be provided in multiple numbers on the side plate (12b).

[0074] The cooking device (1) may include an opening / closing device (100) for controlling the inflow of air to cool the cooking chamber (30) and / or the electrical chamber (40). The opening / closing device (100) may be provided in a guide duct (90). The opening / closing device (100) may be provided inside the guide duct (90). The opening / closing device (100) may be provided to control the inflow of air into the guide duct (90). The opening / closing device (100) will be described in detail later.

[0075] The heating source of the cooking appliance (1) may include a first heat source (61) that supplies radiant heat to food. The first heat source (61) may be provided to supply radiant heat in a vertical direction to the food. The first heat source (61) may be provided in the upper inner part of the cooking chamber (30). For example, the first heat source (61) may be provided in the upper plate (12a). For example, the first heat source (61) may include a sheath heater. For example, the first heat source (61) may include a grill. For example, the first heat source (61) may include a grill heating unit that supplies radiant heat to food from the upper inner part of the cooking chamber (30). For example, the cooking appliance (1) may perform not only a microwave function but also an oven function by the first heat source (61).

[0076] The heating source of the cooking device (1) may include a second heat source (62) that supplies hot air to the food. The second heat source (62) may be provided to supply hot air to the food. The second heat source (62) may be provided on the outer rear side of the cooking chamber (30). For example, the second heat source (62) may be provided on the rear plate (14). For example, the second heat source (62) may be provided on the rear plate (14) corresponding to the cooking chamber (30). For example, the second heat source (62) may include a quartz heater. For example, the second heat source (62) may be provided on the upper and lower outer rear sides of the cooking chamber (30), respectively.

[0077] For example, the second heat source (62) may include a lower second heat source (62a) located at the lower outer side of the cooking room (30). For example, the second heat source (62) may include an upper second heat source (62b) located at the upper outer side of the cooking room (30). For example, the lower second heat source (62a) and the upper second heat source (62b) may be arranged side by side at the upper and lower sides of the rear wall of the cooking room (30). For example, the second heat source (62) may include a convection heating unit. For example, the second heat source (62) may be configured to create convective hot air inside the cooking room (30) through the lower second heat source (62a) and the upper second heat source (62b) located at the upper and lower sides of the rear wall of the cooking room, and a circulation fan (81) located in the center.

[0078] The cooking device (1) may be provided with a circulation fan (81) to circulate air at the rear of the cooking chamber (30) so that food is heated evenly, and a circulation motor (82) to drive the circulation fan (81). The circulation fan (81) may be provided on the outer rear of the cooking chamber (30). For example, the circulation fan (81) may be provided on the rear plate (14). For example, the circulation fan (81) may be provided on the rear plate (14) corresponding to the cooking chamber (30). A plurality of holes (14a) for air flow may be formed in the rear plate (14) corresponding to the cooking chamber (30). A plurality of holes (14a) may be formed in at least a part of the rear plate (14). For example, a plurality of holes (14a) may be formed in at least a part of the rear plate (14) corresponding to the cooking chamber (30).

[0079] A circulation fan (81) can be provided in the cooking chamber (30) by means of a circulation fan bracket (83). The circulation fan bracket (83) can be provided to cover the circulation fan (81). A circulation fan installation part (83a) can be provided in the circulation fan bracket (83). The circulation fan installation part (83a) can be provided to connect the circulation fan (81) and the circulation motor (82). The circulation fan installation part (83a) can be located at the center of the circulation fan bracket (83). The circulation motor (82) and the circulation fan (81) can be installed in the circulation fan bracket (83).

[0080] The circulation fan bracket (83) may be provided with a second heat source installation section (83b) for installing a second heat source (62) located at the rear of the cooking chamber (30). For example, the second heat source installation section (83b) may be provided at the upper and lower portions of the circulation fan bracket (83). For example, a second heat source installation section (83b) for installing a lower second heat source (62a) may be provided at the lower portion of the circulation fan bracket (83). For example, a second heat source installation section (83b) for installing an upper second heat source (62b) may be provided at the upper portion of the circulation fan bracket (83). For example, the second heat source installation section (83b) may be formed by opening at least a portion of the circulation fan bracket (83) so that the second heat source (62) can be installed through it. In this embodiment, the second heat source installation part is illustrated as being formed on the upper and lower parts of the circulation fan bracket, respectively, but is not limited thereto.

[0081] In the case of a microwave oven function that cooks food by radiating electromagnetic waves into a cooking chamber (30), moisture within the food is released, and thus moisture may accumulate inside the cooking chamber (30). At this time, the opening / closing device (100) can open the guide duct (90) to provide air into the cooking chamber (30), and accordingly, the moisture inside the cooking chamber (30) can be removed.

[0082] FIG. 6 is an exploded perspective view showing an opening and closing device installed in a guide duct of a cooking appliance according to one embodiment. FIG. 7 is a drawing showing the state of air flow due to the inflow of outside air when the guide duct is opened by the opening and closing device according to one embodiment. FIG. 8 is a drawing showing the operating state of the opening and closing device shown in FIG. 7. FIG. 9 is a drawing showing the air flow due to the operation of the opening and closing device shown in FIG. 8.

[0083] As shown in FIGS. 6 to 9, the opening and closing device (100) can be provided in the guide duct (90).

[0084] A guide duct (90) may be provided in the electrical room (40) of the main body (10). The guide duct (90) may include a guide body (91) provided to allow air to move inside. The guide duct (90) may include a first opening (92a) formed on one side. The first opening (92a) may be provided to allow air to flow into the guide duct (90). An opening / closing device (100) may be provided in the first opening (92a) to block or open the air flow into the guide duct (90). The first opening (92a) may be provided on one side of the guide body (91). The guide duct (90) may include a second opening (92b) formed on the other side. The second opening (92b) may be provided to allow air from the guide duct (90) to be discharged. The second opening (92b) may be provided to allow air inside the guide duct (90) to be discharged. The second opening (92b) may be provided to communicate with the cooking chamber (30). The second opening (92b) may be provided to be connected to a plurality of communication holes (31) formed in the side plate (12b) of the cooking chamber (30). The first opening (92a) and the second opening (92b) may be formed in different directions. For example, the first opening (92a) may be positioned in one direction of the guide body (91), and the second opening (92b) may be positioned in a direction perpendicular to the first opening (92a). For example, the guide body (91) may be provided in a roughly fan shape.

[0085] The guide duct (90) may be provided with a lamp installation section (93) for installing a lamp (99) to form lighting for the interior of the cooking room (30). The lamp installation section (93) may be formed by opening at least a portion of the upper surface of the guide body (91). For example, the lamp (99) may be installed inside the guide duct (90) by passing through the lamp installation section (93).

[0086] An opening / closing device (100) may be provided in the guide duct (90). The opening / closing device (100) may be provided in the guide body (91). The opening / closing device (100) may be provided in the first opening (92a) of the guide duct (90). The opening / closing device (100) may be provided to open and close the first opening (92a) of the guide duct (90). The opening / closing device (100) may be provided to be coupled to the guide body (91) to open and close the first opening (92a) of the guide duct (90).

[0087] The opening / closing device (100) may include a cover (110), a motor (120), and a connecting member (140). The opening / closing device (100) may include a cover (110). The cover (110) may be rotatably installed within the guide duct (90) to restrict air movement into the guide duct (90). The cover (110) may be provided to correspond to a first opening (92a). The cover (110) may be provided to be rotatable by the motor (120). The cover (110) may include a guide slot (112) provided at the bottom. The guide slot (112) may be provided to be connected to the motor (120) through the connecting member (140). The guide slot (112) may be formed by cutting out at least a portion of the bottom of the cover (110). The guide slot (112) may be formed lengthwise in the horizontal direction of the cover (110) at the bottom part of the cover (110). The second connecting part (142) of the connecting member (140) may be connected to the guide slot (112).

[0088] A connecting member (140) may be provided to connect the cover (110) and the motor (120). The connecting member (140) may include a first connecting part (141) and a second connecting part (142). The first connecting part (141) may be provided at the bottom of the connecting member (140). The second connecting part (142) may be provided at the top of the connecting member (140). A first connecting part (141) connected to the motor (120) may be provided at the bottom of the connecting member (140). A second connecting part (142) connected to the cover (110) may be provided at the top of the connecting member (140). The first connecting part (141) and the second connecting part (142) may be provided as a single unit.

[0089] The motor (120) may include a motor shaft (121). A first connecting part (141) of a connecting member (140) may be coupled to the motor shaft (121) of the motor (120). The connecting member (140) is provided so that the connecting member (140) can rotate together with the motor shaft (121) when the motor shaft (121) rotates, by the motor shaft (121) of the motor (120) being coupled to the first connecting part (141). When the motor shaft (121) rotates, the connecting member (140) can also rotate together by means of the first connecting part (141) connected to the motor shaft (121). When the connecting member (140) rotates, the second connecting part (142) can also rotate together. The second connecting part (142) may be provided in a roughly cylindrical shape. The second connecting part (142) in the shape of a cylinder is coupled to the guide slot (112) of the cover (110), so that the cover (110) can be rotated along the guide slot (112) by the rotation of the second connecting part (142).

[0090] The cover (110) may include a rotation axis coupling part (111) that serves as the center of rotation. The rotation axis coupling part (111) may be provided at one end of the cover (110). The rotation axis coupling part (111) may be rotatably coupled to the guide duct (90) by a rotation axis (151). The guide duct (90) may be provided with a cover rotation axis coupling part (96) for coupling the rotation axis (151). The cover rotation axis coupling part (96) may be provided on the upper and lower surfaces of the guide duct (90), respectively. The cover rotation axis coupling part (96) may be positioned adjacent to the first opening (92a) of the guide duct (90). The cover rotation axis coupling part (96) may be provided so that the rotation axis (151) passing through the rotation axis coupling part (111) of the cover (110) can be coupled and fixed.

[0091] The cover (110) can be rotated around a rotation axis (151) coupled to a cover rotation axis coupling part (96) provided adjacent to the first opening (92a) of the guide duct (90). For example, the cover (110) can be provided to be rotatable around a rotation axis (151) coupled to the cover rotation axis coupling part (96). The cover (110) can be provided to be rotatable by a motor (120).

[0092] The opening / closing device (100) may be installed at a location adjacent to the first opening (92a) to open / close the first opening (92a) of the guide duct (90). The guide duct (90) may be provided with a cover rotation shaft coupling part (96) for rotatably coupling the cover (110) of the opening / closing device (100). The guide duct (90) may be provided with a motor installation part (94) for installing a motor (120) that is provided to rotate the cover (110) of the opening / closing device (100). The cover rotation shaft coupling part (96) and the motor installation part (94) may be provided in the guide body (91). For example, the cover rotation shaft coupling part (96) may be provided on the upper surface and the lower surface of the guide body (91), respectively. For example, the cover rotation shaft coupling part (96) may be provided on the upper surface and the lower surface of the guide body (91) adjacent to the first opening (92a), respectively. For example, the motor mounting portion (94) may be provided on the lower surface of the guide body (91). For example, the motor mounting portion (94) may be provided on the lower surface of the guide body (91) adjacent to the first opening (92a).

[0093] The connecting member (140) has a second connecting part (142) penetrating the motor installation part (94) that is coupled to the guide slot (112) of the cover (110), thereby transmitting the rotational movement of the motor (120) to the cover (110) so that the cover (110) can open or close the first opening (92a).

[0094] The opening and closing device (100) may further include a switch (130) provided to restrict the movement of the cover (110). The switch (130) may be mounted on a motor (120) to restrict the movement of the cover (110). For example, the switch (130) may be provided to restrict the rotational movement of the cover (110).

[0095] For example, in the range mode, the cover (110) of the opening / closing device (100) can be rotated by the motor (120) from the first opening (92a) of the guide duct (90) to move to the first position (P1). For example, in the range mode, where the control unit (200, see FIG. 13) performs a cooking operation using the microwave radiation unit (52), the motor (120) of the opening / closing device (100) can be driven to rotate the cover (110) to the first position (P1) and open the guide duct (90).

[0096] When the cover (110) of the opening / closing device (100) is rotated to a first position (P1) and the first opening (92a) of the guide duct (90) is opened, cold air is introduced into the electrical room (40) by the cooling fan (70) through the first opening (92a), and the cold air introduced into the electrical room (40) moves to the cooking room (30) through the first opening (92a) of the guide duct (90) to remove moisture inside the cooking room (30).

[0097] In the case of the range mode, which cooks food by radiating electromagnetic waves into the cooking chamber (30), the principle is to heat the food by causing water molecules in the food to vibrate through the microwave radiation unit (52), and thus moisture is released from the food, which can cause moisture to accumulate inside the cooking chamber (30). Therefore, the opening and closing device (100) can open the cover (110) to provide air into the cooking chamber (30). By doing so, moisture inside the cooking chamber (30) can be removed.

[0098] As moisture is removed from inside the cooking room (30), the user can check inside the cooking room (30).

[0099] FIG. 10 is a diagram showing the state of air flow due to the inflow of outside air when a guide duct is closed by an opening / closing device according to one embodiment. FIG. 11 is a diagram showing the operating state of the opening / closing device illustrated in FIG. 10. FIG. 12 is a diagram showing the air flow due to the operation of the opening / closing device illustrated in FIG. 10. In the following, descriptions of parts that overlap with the above descriptions are omitted.

[0100] As illustrated in FIGS. 10 to 12, the opening and closing device (100) can block the inflow of air into the guide duct (90) by positioning the cover (110) at the second position (P2).

[0101] The cooking device (1) may include a grill mode that performs cooking operations using a first heat source (61), and / or an oven mode that performs cooking operations using a second heat source (62), and / or an air fryer mode that performs cooking operations using both the first heat source (61) and the second heat source (62). For example, in the air fryer mode, depending on the set temperature, cooking operations may be performed using the upper second heat source (62b) of the second heat source (62), cooking operations may be performed using the lower second heat source (62a) of the second heat source (62), or cooking operations may be performed using both the upper second heat source (62b) and the lower second heat source (62a) of the second heat source (62) simultaneously.

[0102] In the case of an air fryer mode using a first heat source (61) and / or a second heat source (62) in a cooking chamber (30), heat inside the cooking chamber (30) must be trapped. The air fryer mode must use hot air to remove moisture from the food and cause a Maillard reaction on the surface of the food to create a crispy layer. In the air fryer mode, the first heat source (61) can dry the moisture of the food located at the top while preheating. In the air fryer mode, by driving the upper second heat source (62b) and the lower second heat source (62a), convective hot air can be generated inside the cooking chamber (30) to dry the moisture of the food, and strong hot air can be created by the second heat source (62) which has strong directional properties.

[0103] In this air fryer mode, the cover (110) of the opening / closing device (100) may be positioned at a second position (P2) that closes the first opening (92a) of the guide duct (90). For example, in the case of an air fryer mode in which a cooking operation is performed using the first heat source (61) and the second heat source (62), the control unit (see FIG. 13) may drive the motor (120) of the opening / closing device (100) to move the cover (110) to the second position (P2) and close the guide duct (90).

[0104] When the cover (110) of the opening / closing device (100) is in the second position (P2), the first opening (92a) of the guide duct (90) is closed, and the inflow of cold air into the cooking chamber (30) is blocked by the closed guide duct (90). The cold air introduced into the electrical chamber (40) by the cooling fan (70) can cool the main body (10) and the internal parts of the electrical chamber (40).

[0105] Therefore, in air fryer mode, heat loss caused by cold air flowing into the cooking chamber (30) can be minimized, and the surface temperature of the main body (10) and the temperature of the internal parts can be prevented from rising.

[0106] FIG. 13 illustrates a control block diagram of a cooking device according to one embodiment.

[0107] Referring to FIG. 13, a cooking device (1) according to one embodiment may include a user interface device (150), a temperature sensor (50), a microwave radiation unit (52), a cooling fan (70), a circulation fan (81), a first heat source (61), a second heat source (62), an opening and closing device (100), and a control unit (200).

[0108] The user interface device (150) may include an output interface (150b) and an input interface (150a).

[0109] At least one output interface (150b) can transmit various information related to the operation of the cooking device (1) to the user by generating sensory information.

[0110] For example, at least one output interface (150b) can transmit information to the user regarding the settings of the cooking appliance (1) and the operating time of the cooking appliance (1). Information regarding the operation of the cooking appliance (1) may be output via a display (51), an indicator, and / or voice. At least one output interface (150b) may include, for example, a Liquid Crystal Display (LCD) panel, an indicator, a Light Emitting Diode (LED) panel, a speaker, etc.

[0111] In one embodiment, at least one output interface (150b) may include a display.

[0112] In one embodiment, at least one output interface (150b) can output sensory information (e.g., visual information, auditory information, etc.) related to the control of the cooking device (1).

[0113] At least one input interface (150a) can convert sensory information received from a user into an electrical signal.

[0114] For example, at least one input interface (150a) may include the control unit (18a) and / or button (18b) described above.

[0115] At least one input interface (150a) may include a button for receiving user input related to the cooking device (1).

[0116] Each button may include a visual indicator (e.g., text, icon, etc.) that can represent its function.

[0117] In one embodiment, at least one input interface (150a) can receive a mode selection input for selecting a cooking mode (or driving mode) of a cooking appliance (1).

[0118] The cooking mode (or operating mode) of the cooking appliance (1) may include, for example, an air fryer mode, a range mode, an oven mode and / or a grill mode.

[0119] As explained above, the air fryer mode corresponds to a mode for cooking food using a first heat source (61) and a second heat source (62).

[0120] Specifically, the air fryer mode is a mode that can create a crispy texture in food without using much oil by circulating hot air at a high temperature through a circulating fan (81) to cook the food.

[0121] In air fryer mode, external air must be prevented from entering the cooking chamber (30) to create a crispy texture for the food being cooked. Additionally, since high-temperature hot air is required in air fryer mode, it is necessary to prevent the high-temperature hot air from heating the main body (10) and causing various parts to malfunction or the user to be injured.

[0122] However, according to the prior art, when the cooling fan is operated, it is not possible to prevent external air from entering the interior of the cooking chamber, and when the cooling fan is not operated, it is not possible to prevent the main body from heating up.

[0123] Range mode corresponds to a mode for cooking food using a microwave radiation unit (52).

[0124] Specifically, the range mode uses electromagnetic waves to vibrate water molecules inside the food, heating it from the inside out; it is an effective mode for quickly heating or defrosting foods containing moisture.

[0125] In range mode, since the food is heated by vibrating water molecules, a lot of moisture is generated inside the cooking chamber (30), and therefore, there is a need to prevent a situation where the user cannot observe the inside of the cooking chamber (30).

[0126] The oven mode corresponds to a mode for cooking food using the second heat source (62).

[0127] Specifically, the oven mode is a mode that uses a second heat source (62) to evenly heat the entire interior of the cooking chamber (30), and is effective for cooking food by transferring heat from the outside to the inside.

[0128] In oven mode, since the entire interior of the cooking chamber (30) needs to be heated evenly, it is necessary to prevent outside air from entering the cooking chamber (30).

[0129] However, according to the prior art, when the cooling fan is operated, it is not possible to prevent external air from entering the interior of the cooking chamber, and when the cooling fan is not operated, it is not possible to prevent the main body from heating up.

[0130] The grill mode corresponds to a mode for cooking food using the first heat source (61).

[0131] Specifically, the grill mode is a method of heating using the first heat source (61), and is an effective mode for directly heating the surface of the food.

[0132] In grill mode, since the heat supplied by the first heat source (61) is concentrated on the surface of the food being cooked, it is necessary to circulate the air inside the cooking chamber (30).

[0133] In one embodiment, at least one input interface (150a) can receive a mode setting input for a setting related to a selected cooking mode (or driving mode).

[0134] The mode setting input is an input regarding various settings related to the cooking mode selected by the mode selection input.

[0135] For example, the mode setting input may include a time setting input for setting the cooking time (or operation time) of the selected cooking mode and a temperature setting input for setting the cooking temperature of the selected cooking mode.

[0136] In one embodiment, at least one input interface (150a) can receive a start input to start a cooking mode for which selection and setting are completed.

[0137] The control unit (200) can control the operation of the cooking device (1) by processing user input received through the input interface (150a).

[0138] For example, the control unit (200) can control various components of the cooking device (1) (e.g., microwave radiation unit (52), cooling fan (70), circulation fan (81), first heat source (61), second heat source (62) and / or opening / closing device (100)) to perform a selected cooking mode based on the selected settings upon receiving a start input.

[0139] At least one input interface (150a) may include, for example, 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.

[0140] In the present disclosure, 'button' may be replaced with a UI element (User Interface Element), a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touchpad, a touchscreen, a jog dial, and / or a microphone, etc.

[0141] The temperature sensor (50) can measure the temperature of the cooking chamber (30).

[0142] The temperature sensor (50) can be installed at various locations inside the main body (10). For example, the temperature sensor (50) may be provided inside the cooking chamber (30), but the location of the temperature sensor (50) is not limited thereto.

[0143] The temperature sensor (50) can transmit information related to the measured temperature of the cooking chamber (30) to the control unit (200).

[0144] The control unit (200) may include a processor (210) and a memory (220). The processor (210) is hardware and may include logic circuits and arithmetic circuits. The processor (210) may control electrically connected components of the cooking appliance (1) using programs, instructions, and / or data stored in the memory (220) for the operation of the cooking appliance (1). The control unit (200) may be implemented as a control circuit including circuit elements such as capacitors, inductors, and resistors. The processor (210) and the memory (220) may be implemented as separate chips or as a single chip. Additionally, the control unit (200) may include a plurality of processors and a plurality of memories.

[0145] The memory (220) can store programs, applications, and / or data for the operation of the cooking device (1), and can store data generated by the processor (210). The memory (220) may include non-volatile memory such as ROM (Read Only Memory) and flash memory for storing data for a long period. The memory (220) may include volatile memory such as S-RAM (Static Random Access Memory) and D-RAM (Dynamic Random Access Memory) for temporarily storing data.

[0146] In one embodiment, the control unit (200) can control various configurations of the cooking device (1) according to various cooking modes.

[0147] In the present invention, driving a specific configuration means turning on a specific configuration, and stopping or halting the operation of a specific configuration may mean turning off a specific configuration.

[0148] FIG. 14 is a flowchart illustrating whether a guide duct is opened according to the driving mode of a cooking appliance according to one embodiment.

[0149] Referring to FIG. 14, the control unit (200) can receive a mode selection input for selecting a cooking mode (or driving mode) of the cooking device (1) (1000). For example, the control unit (200) can receive the mode selection input through at least one input interface (150a).

[0150] *129 The control unit (200) can receive a mode setting input for a setting related to a selected cooking mode (or driving mode) (1100). For example, the control unit (200) can receive a mode setting input through at least one input interface (150a).

[0151] The control unit (200) can receive a start input to start a cooking mode for which selection and setting have been completed (1200). For example, the control unit (200) can receive a start input through at least one input interface (150a).

[0152] The control unit (200) can start the selected cooking mode in response to receiving a start input to start the cooking mode for which selection and setting are completed (1300).

[0153] Starting the selected cooking mode may include controlling various components of the cooking device (1) (e.g., microwave radiation unit (52), cooling fan (70), circulation fan (81), first heat source (61), second heat source (62) and / or opening / closing device (100)) based on the selected cooking mode and cooking settings.

[0154] The control unit (200) can control the opening / closing device (100) to close the guide duct (90) based on the selection of an air fryer mode and / or oven mode among a plurality of cooking modes (example of 1400).

[0155] The control unit (200) can control the opening / closing device (100) to open the guide duct (90) based on the selection of a mode other than the air fryer mode and / or oven mode among the plurality of cooking modes (e.g., range mode and / or grill mode) (1400 no).

[0156] Controlling the opening / closing device (100) to open the guide duct (90) may mean that no control signal is output to the opening / closing device (100) when the guide duct (90) is in an open state.

[0157] For example, the control unit (200) may not output any control signal to the opening / closing device (100) if the selected cooking mode is a mode other than the air fryer mode or oven mode (e.g., a low-heat mode and / or a grill mode).

[0158] The control unit (200) can control the opening / closing device (100) to open the guide duct (90) based on the fact that the selected cooking mode has ended (example of 1500) (1600).

[0159] For example, the control unit (200) can control the opening / closing device (100) to close the guide duct (90) based on receiving a start input when the selected cooking mode is an air fryer mode or an oven mode (1410), and control the opening / closing device (100) to open the guide duct (90) based on the end of the cooking mode (1600).

[0160] In one embodiment, the control unit (200) can drive the cooling fan (70) based on receiving a start input when the selected cooking mode is an air fryer mode or an oven mode. For example, the control unit (200) can drive the cooling fan (70) at a preset maximum rotational speed based on the fact that the air fryer mode or oven mode has started.

[0161] In one embodiment, the control unit (200) drives the cooling fan (70) at a maximum first rotational speed in range mode and / or grill mode, and drives the cooling fan (70) at a preset maximum rotational speed in air fryer mode or oven mode, wherein the first rotational speed may be slower than the preset maximum rotational speed.

[0162] The termination of the selected cooking mode may mean that the cooking time set according to the cooking settings has elapsed. For example, the control unit (200) may terminate the selected cooking mode based on the fact that the cooking time set according to the cooking settings has elapsed since the start of the cooking mode.

[0163] According to the present invention, when the air fryer mode and / or oven mode is started, external air can be prevented from entering the interior of the cooking chamber (30) during cooking. Additionally, as described below, according to the present invention, when the air fryer mode and / or oven mode is started, the cooling fan (70) can be driven with the guide duct (90) closed to prevent the main body (10) from being heated.

[0164] The operation of the control unit (200) in each of the multiple cooking modes is described below.

[0165] The control unit (200) drives the microwave radiation unit (52) based on the start of the range mode, and can stop the operation of the microwave radiation unit (52) when the range mode ends.

[0166] The control unit (200) drives the cooling fan (70) based on the start of the range mode, and can stop the operation of the cooling fan (70) when the range mode ends.

[0167] The control unit (200) can control the opening / closing device (100) to maintain the open state of the guide duct (90) based on the start of the range mode.

[0168] As in the embodiment described in FIG. 14, the control unit (200) can control the opening / closing device (100) to open the guide duct (90) based on the fact that all cooking modes have ended. In this case, the control unit (200) controlling the opening / closing device (100) to maintain the open state of the guide duct (90) based on the fact that the range mode has started may mean that no control signal is output to the opening / closing device (100).

[0169] Meanwhile, according to various embodiments, the control unit (200) may control the opening / closing device (100) to close the guide duct (90) based on the fact that all cooking modes have ended, or the opening / closing device (100) may control the guide duct (90) to open or close according to the cooking mode at the start of the cooking mode regardless of the end of the cooking mode.

[0170] In one embodiment, the control unit (200) determines the cooking mode most frequently used by the user based on the user's cooking mode usage history, and may open or close the guide duct (90) in correspondence with the cooking mode most frequently used by the user when all cooking modes are finished.

[0171] However, for the convenience of explanation below, it is assumed that the control unit (200) controls the opening / closing device (100) to open the guide duct (90) based on the fact that the cooking mode has ended.

[0172] According to one embodiment, when the cooking appliance (1) is not in use, the inside of the cooking room (30) can be ventilated by keeping the guide duct (90) in an open state at all times.

[0173] According to the present invention, in range mode, moisture can be prevented from accumulating inside the cooking chamber (30) by opening the guide duct (90) and driving the cooling fan (70).

[0174] The control unit (200) drives the second heat source (62) based on the start of the oven mode, and can stop the operation of the second heat source (62) when the oven mode ends.

[0175] The control unit (200) drives the cooling fan (70) based on the start of the oven mode, and can stop the operation of the cooling fan (70) when the oven mode ends.

[0176] The control unit (200) can control the opening and closing device (100) so that the guide duct (90) is closed based on the start of the oven mode.

[0177] According to the present invention, in oven mode, by closing the guide duct (90) and driving the cooling fan (70), it is possible to prevent outside air from entering the cooking chamber (30) while also preventing the main body (10) from being heated.

[0178] The control unit (200) drives the first heat source (61) based on the start of the grill mode, and can stop the operation of the first heat source (61) when the grill mode ends.

[0179] The control unit (200) drives the cooling fan (70) based on the start of the grill mode, and can stop the operation of the cooling fan (70) when the grill mode ends.

[0180] The control unit (200) can control the opening / closing device (100) so that the guide duct (90) is opened based on the fact that the grill mode has started.

[0181] According to the present invention, in grill mode, by opening the guide duct (90) and driving the cooling fan (70), air inside the cooking chamber (30) can be helped to flow, while preventing moisture from accumulating inside the cooking chamber (30).

[0182] FIG. 15 is a flowchart for explaining the operation of the components of a cooking appliance when the cooking appliance according to one embodiment operates in air fryer mode.

[0183] Referring to FIG. 15, the control unit (200) can control the opening and closing device (100) to drive the first heat source (61), the second heat source (62), and the cooling fan (70) and close the guide duct (90) based on the fact that the air fryer mode has started (2000). Although not shown in the drawing, the control unit (200) can drive the circulation fan (81) based on the fact that the air fryer mode has started.

[0184] The circulation fan (81) serves to allow air heated by the first heat source (61) and / or the second heat source (62) to be advanced into the interior of the cooking chamber (30).

[0185] The control unit (200) can terminate the air fryer mode when the air fryer mode starts and the set time has elapsed (example of 2200).

[0186] Here, the set time may refer to the set cooking time based on the time setting input.

[0187] The control unit (200) can cook food in air fryer mode until the set time elapses after the air fryer mode starts.

[0188] In one embodiment, the control unit (200) may stop the operation of the second heat source (62) until the temperature of the cooking chamber (30) drops below the preset temperature based on the fact that the temperature of the cooking chamber (30) has reached a preset temperature after the start of the air fryer mode (e.g., 2300, 2400).

[0189] Here, the preset temperature may refer to the set temperature based on the temperature setting input.

[0190] In one embodiment, the control unit (200) may stop the operation of the second heat source (62) until the temperature of the cooking chamber (30) drops below the preset temperature based on the fact that the temperature of the cooking chamber (30) has reached a preset temperature after the start of the air fryer mode (e.g., 2300, 2400).

[0191] Meanwhile, in one embodiment, the control unit (200) can maintain the operating state of the first heat source (61) even if the temperature of the cooking chamber (30) reaches a preset temperature after the start of the air fryer mode. Maintaining the operating state of the first heat source (61) may mean not turning off the first heat source (61).

[0192] For example, the control unit (200) can turn off only the second heat source (62) among the first heat source (61) and the second heat source (62) based on the fact that the temperature of the cooking chamber (30) has reached a preset temperature after the start of the air fryer mode.

[0193] For example, the control unit (200) can drive the first heat source (61) from the start time of the air fryer mode to the end time.

[0194] According to the prior art, when the temperature of the cooking chamber reaches a preset temperature, driving the first heat source does not prevent the temperature of the cooking chamber from rising, so both the first heat source and the second heat source must be turned off.

[0195] On the other hand, according to the present disclosure, when the air fryer mode is started, the guide duct (90) is closed and the cooling fan (70) is driven to prevent the main body (10) from being heated (or the temperature of the cooking chamber (30) from rising), so there is no need to turn off the first heat source (61) even if the temperature of the cooking chamber (30) reaches a preset temperature.

[0196] According to the present invention, high cooking performance can be secured by continuously operating the first heat source (61).

[0197] In one embodiment, the control unit (200) may stop the operation of the second heat source (62) based on the fact that the temperature of the cooking chamber (30) has reached a preset temperature, and then resume the operation of the second heat source (62) based on the fact that the temperature of the cooking chamber (30) has dropped below the preset temperature (Example of 2500, 2600).

[0198] According to the present invention, if the temperature of the cooking chamber (30) drops below a preset temperature despite the operation of the first heat source (61), the temperature of the cooking chamber (30) can be quickly maintained at the user's preset temperature by resuming the operation of the second heat source (62).

[0199] The control unit (200) can control the opening / closing device (100) to stop the operation of the first heat source (61), the second heat source (62), and the cooling fan (70) and to open the guide duct (90) based on the fact that the operation time of the air fryer mode has reached a preset time (the air fryer mode has ended) (Example of 2200, 2700). Although not shown in the drawing, the control unit (200) can also stop the operation of the circulation fan (81) based on the fact that the air fryer mode has ended.

[0200] According to various embodiments, the main body (10) may be heated immediately after the air fryer mode is terminated. Accordingly, the cooking device (1) according to one embodiment may perform an operation to cool the main body (10) for a predetermined time after the air fryer mode is terminated.

[0201] In one embodiment, the control unit (200) stops the operation of the first heat source (61) and the second heat source (62) in response to the operation time of the air fryer mode reaching a preset time, and may stop the operation of the cooling fan (70) after maintaining the operation of the cooling fan (70) for a predetermined time.

[0202] In one embodiment, the control unit (200) may control the opening / closing device (100) to stop the operation of the first heat source (61) and the second heat source (62) in response to the operation time of the air fryer mode reaching a preset time, and to open the guide duct (90) after maintaining the guide duct (90) closed for a predetermined time.

[0203] For example, the control unit (200) may immediately stop the operation of the first heat source (61) and the second heat source (62) in response to the operation time of the air fryer mode reaching a preset time, and drive the cooling fan (70) while maintaining the closure of the guide duct (90) for a predetermined time.

[0204] According to the present invention, it is possible to prevent the user from being injured by the main body (10) becoming hot immediately after the air fryer mode.

[0205] A cooking device (1) according to one embodiment comprises: a main body (10) including a cooking chamber (30); a first heat source (61) provided in the cooking chamber (30) to generate radiant heat; a second heat source (62) provided in the cooking chamber (30) to generate convective heat; a microwave radiating unit (52) that generates microwaves inside the cooking chamber (30); an electrical chamber (40) partitioned from the cooking chamber (30) and accommodating the microwave radiating unit (52); a cooling fan (70) that sucks in external air and discharges it into the electrical chamber (40) to cool the electrical chamber (40); a guide duct (90) provided to guide the air discharged from the cooling fan (70) into the cooking chamber (30); and an opening / closing device (100) provided to open / close the guide duct (90). According to the present disclosure, a cooking device is provided that can shorten the cooking speed and improve cooking performance.

[0206] The above opening / closing device (100) may include a cover (110) rotatably installed within the guide duct to restrict air movement to the guide duct (90), a motor (120) provided to rotate the cover (110), and a connecting member (140) connecting the cover (110) and the motor (120).

[0207] The above opening / closing device (100) may further include a switch (130) provided to restrict the movement of the cover (110).

[0208] The above main body (10) includes an air intake port (71) formed to allow external air to be sucked in, and the air intake port (71) may be located at the rear of the electrical room (40).

[0209] The above cooking device (1) may further include a control unit (200) that controls the opening / closing device (100) to close the guide duct (90) based on whether an air fryer mode or an oven mode among a plurality of modes has started.

[0210] The control unit (200) can control the opening / closing device (100) to open the guide duct (90) based on whether the air fryer mode or the oven mode has ended.

[0211] The control unit (200) can control the opening / closing device (100) to maintain the open state of the guide duct (90) based on whether the range mode or the grill mode among the plurality of modes has started.

[0212] The control unit (200) can drive the cooling fan (70) based on whether the air fryer mode or the oven mode has started.

[0213] The control unit (200) can drive the cooling fan (70) at a preset maximum rotational speed based on whether the air fryer mode or the oven mode has started.

[0214] The above cooking device may include a control unit that drives the first heat source (61), the second heat source (62), and the cooling fan (70) based on the fact that the air fryer mode among a plurality of modes has started, and controls the opening / closing device (100) so that the guide duct (90) is closed.

[0215] The control unit (200) may stop the operation of the second heat source (62) until the temperature of the cooking chamber (30) drops below the preset temperature based on the fact that the temperature of the cooking chamber (30) has reached a preset temperature after the start of the air fryer mode.

[0216] The control unit (200) can stop the operation of the first heat source (61), the second heat source (62), and the cooling fan (70) based on the fact that the operation time of the air fryer mode has reached a preset time, and control the opening / closing device (100) so that the guide duct (90) is opened.

[0217] The control unit (200) may stop the operation of the first heat source (61) and the second heat source (62) in response to the operation time of the air fryer mode reaching the preset time, and may stop the operation of the cooling fan (70) after maintaining the operation of the cooling fan (70) for a predetermined time.

[0218] The control unit (200) can control the opening / closing device (100) so that, in response to the operation time of the air fryer mode reaching the preset time, the operation of the first heat source (61) and the second heat source (62) is stopped, and the guide duct (90) is opened after maintaining the closed state of the guide duct (90) for a predetermined time.

[0219] A control method for a cooking device (1) according to one embodiment of the present invention may include driving the first heat source (61), the second heat source (62), and the cooling fan (70) based on the fact that the air fryer mode among a plurality of modes has started, and closing the guide duct (90).

[0220] The control method of the above cooking device (1) may further include stopping the operation of the second heat source (62) until the temperature of the cooking chamber (30) drops below the preset temperature based on the fact that the temperature of the cooking chamber (30) has reached a preset temperature after the start of the air fryer mode.

[0221] The control method of the above cooking device (1) may further include stopping the operation of the first heat source (61), the second heat source (62), and the cooling fan (70) and opening the guide duct (90) based on the fact that the operation time of the air fryer mode has reached a preset time.

[0222] Stopping the operation of the first heat source (61), the second heat source (62), and the cooling fan (70) and opening the guide duct (90) based on the fact that the operation time of the air fryer mode has reached a preset time may include stopping the operation of the first heat source (61) and the second heat source (62) in response to the fact that the operation time of the air fryer mode has reached the preset time, and stopping the operation of the cooling fan (70) after maintaining the operation of the cooling fan (70) for a predetermined time.

[0223] Stopping the operation of the first heat source (61), the second heat source (62), and the cooling fan (70) and opening the guide duct (90) based on the fact that the operation time of the air fryer mode has reached a preset time may include stopping the operation of the first heat source (61) and the second heat source (62) in response to the fact that the operation time of the air fryer mode has reached the preset time, and opening the guide duct (90) after maintaining the closure of the guide duct (90) for a predetermined time.

[0224] The control method of the above cooking device (1) may further include closing the guide duct (90) based on the fact that the oven mode among the plurality of modes has started; and maintaining the openness of the guide duct (90) based on the fact that the range mode or grill mode among the plurality of modes has started.

[0225] Although the cooking apparatus has been described above with reference to the attached drawings, focusing on specific shapes and directions, various modifications and changes are possible by a person skilled in the art, and such modifications and changes should be interpreted as being included within the scope of the disclosed invention.

Claims

1. A main body including a cooking chamber; A first heat source provided in the above-mentioned cooking chamber to generate radiant heat; A second heat source provided in the above-mentioned cooking chamber to generate convective heat; A microwave radiating unit that generates microwaves inside the above cooking chamber; An electric chamber partitioned from the above cooking chamber and accommodating the above microwave radiation unit; A cooling fan that draws in external air and discharges it into the electrical room to cool the electrical room; A guide duct provided to guide air discharged from the cooling fan into the interior of the cooking chamber; and A cooking appliance comprising an opening and closing device provided to open and close the above guide duct.

2. In Paragraph 1, The above-mentioned switching device is, A cover rotatably installed within the guide duct to restrict air movement into the guide duct, and A motor provided to rotate the above cover, and A cooking appliance comprising a connecting member connecting the above cover and the above motor.

3. In Paragraph 2, The above-mentioned switching device is, A cooking appliance further comprising a switch provided to restrict the movement of the above cover.

4. In Paragraph 1, The above main body is, It includes an air intake formed to allow the above-mentioned external air to be drawn in, and The above air intake is a cooking appliance located at the rear of the above-mentioned electrical room.

5. In Paragraph 1, A cooking appliance further comprising: a control unit that controls the opening and closing device to close the guide duct based on whether an air fryer mode or an oven mode has started among a plurality of modes.

6. In Paragraph 5, The above control unit is, A cooking appliance that controls the opening / closing device to open the guide duct based on the fact that the above air fryer mode or the above oven mode has ended.

7. In Paragraph 5, The above control unit is, A cooking appliance that controls the opening and closing device to maintain the open state of the guide duct based on whether the range mode or the grill mode among the above plurality of modes has been started.

8. In Paragraph 5, The above control unit is, A cooking appliance that drives the cooling fan based on the start of the above air fryer mode or the above oven mode.

9. In Paragraph 8, The above control unit is, A cooking appliance that drives the cooling fan at a preset maximum rotational speed based on the start of the above air fryer mode or the above oven mode.

10. In Paragraph 1, A cooking appliance comprising: a control unit that drives the first heat source, the second heat source, and the cooling fan based on the fact that the air fryer mode is started among a plurality of modes, and controls the opening and closing device so that the guide duct is closed.

11. In Paragraph 10, The above control unit is, A cooking device that stops the operation of the second heat source until the temperature of the cooking chamber drops below the preset temperature, based on the fact that the temperature of the cooking chamber has reached a preset temperature after the start of the above air fryer mode.

12. In Paragraph 10, The above control unit is, A cooking device that stops the operation of the first heat source, the second heat source, and the cooling fan based on the fact that the operation time of the above air fryer mode has reached a preset time, and controls the opening / closing device so that the guide duct is opened.

13. In Paragraph 12, The above control unit is, A cooking device that stops the operation of the first heat source and the second heat source in response to the operation time of the air fryer mode reaching the preset time, and stops the operation of the cooling fan after maintaining the operation of the cooling fan for a predetermined time.

14. In Paragraph 12, The above control unit is, A cooking appliance that controls the opening and closing device to stop the operation of the first heat source and the second heat source in response to the operation time of the air fryer mode reaching the preset time, and to open the guide duct after maintaining the guide duct closed for a predetermined time.

15. A main body including a cooking chamber; a first heat source provided in the cooking chamber to generate radiant heat; a second heat source provided in the cooking chamber to generate convective heat; a microwave radiating unit that generates microwaves inside the cooking chamber; an electrical chamber partitioned from the cooking chamber and accommodating the microwave radiating unit; a cooling fan that sucks in external air and discharges it into the electrical chamber to cool the electrical chamber; and a guide duct provided to guide the air discharged from the cooling fan into the cooking chamber; wherein, Based on the fact that the air fryer mode has started among the multiple modes, the first heat source, the second heat source, and the cooling fan are driven, and A method for controlling a cooking appliance comprising closing the guide duct based on the start of the above air fryer mode.

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