Exhaust device and cooking appliance having same

Abstract

An exhaust device and a cooking appliance including same, according to one embodiment of the present disclosure, comprise: a top plate including a suction part for suctioning contaminated particles; and a door for opening / closing the suction part. The door includes a first movable hinge shaft that rotates about a first point below the top plate when the door rotates, and a second movable hinge shaft that rotates about a second point below the top plate when the door rotates. When the door is opened, the height of the first movable hinge shaft increases and then decreases, and the height of the second movable hinge shaft increases.

Description

Exhaust device and cooking device equipped with the same

[0001] The present disclosure relates to an exhaust device and a cooking appliance equipped with the same, and more specifically, to an exhaust device that improves the intake performance of contaminants generated during a cooking process and a cooking appliance equipped with the same.

[0002] Generally, kitchens are equipped with a countertop on which heating appliances, such as electric heaters or gas stoves, are placed to apply high-temperature heat to food for cooking, such as boiling or baking.

[0003] During this process, food being cooked by the high heat of heating appliances placed on the countertop generates pollutants such as smoke, odors, and oil vapors. These pollutants can become airborne due to the heat and spread throughout the kitchen or the entire room. Such diffused pollutants can cause unpleasant odors, leading to a sense of aversion. Particularly in enclosed kitchens, these pollutants can impair worker concentration and pose a risk to their health.

[0004] Accordingly, range hoods are installed in kitchens to exhaust pollutants such as smoke, odors, and grease vapors generated during cooking to the outside.

[0005] Such a range hood may be configured to include a hood body forming the exterior of the range hood and having an intake port formed on its lower surface, and a blower that generates an airflow to draw air into the hood body and discharge air to the outside.

[0006] Additionally, the range hood may further include a filter installed in the hood body to filter air sucked into the body, and a pipe forming a passage to discharge the air sucked into the body through the filter to the outside.

[0007] The operation of the range hood configured as described above is as follows.

[0008] Contaminants generated during the process of food being heated by a heating appliance on the countertop rise due to their own buoyancy caused by their temperature being higher than the surrounding air, or are forcibly lifted by the airflow formed by the range hood's blower. These rising contaminants can pass through a filter and be discharged through piping connected to an external duct.

[0009] The above range hood can suck in air and contaminants near the intake port formed on the lower surface of the hood body to some extent, but it is difficult to properly suck in air and contaminants located far from the intake port. This is because the velocity of the intake airflow decreases inversely proportional to the square of the distance from the intake port as it moves further away.

[0010] In other words, in conventional range hoods, suction performance decreases rapidly as one moves away from the intake, and increasing the suction flow rate of the intake fan does not proportionally increase the capture efficiency of pollutants.

[0011] Nevertheless, there is a method to increase the suction power of the range hood by increasing the suction airflow of the suction fan, but in order to double the suction airflow of the suction fan, the power consumption of the suction fan must be increased by 2 to the power of 3, that is, 8 times, so the problem arises that the power consumption increases excessively and consequently the noise increases significantly.

[0012] Considering these factors, it can be seen that the range hood's intake port must be positioned close to the source of pollutants for effective capture. In other words, to ensure effective capture, the range hood must be installed at the lowest possible height so that the intake port is located as close as possible to the location where the food being cooked is heated.

[0013] However, setting the installation height of a range hood to simultaneously achieve the goals of improving pollutant capture efficiency and cooking efficiency is not an easy task.

[0014] For example, while the pollutant capture efficiency of a range hood may improve as its installation height is lowered, it also imposes more restrictions on the types of cooking appliances that can be placed on it. In other words, as the installation height of the range hood decreases, only cooking appliances of a lower height become usable.

[0015] Conversely, as the installation height of the range hood increases, it becomes possible to cook with taller appliances; however, as the distance between the source of pollutants and the range hood's intake increases, the likelihood of reduced pollutant capture efficiency also increases.

[0016] Recently, the use of downdraft hoods is gradually expanding instead of ceiling-mounted range hoods due to space utilization and design considerations.

[0017] Downdraft hoods are not installed on the ceiling but are mounted on heating appliances such as electric cooktops or on the kitchen island itself. These downdraft hoods offer advantages over ceiling-mounted range hoods in terms of space utilization and design.

[0018] Prior art document 1 (European published patent No. 3553388) discloses an example of a downdraft hood.

[0019] The downdraft extractor (21) disclosed in prior art 1 can be installed on a cooking table (4) provided with a hob (22). The downdraft extractor (21) can be installed on the hob (22) or installed adjacent to the hob (22).

[0020] The downdraft extractor (21) may include a hood body (213), and a suction part (212) may be formed on the front of the hood body (213).

[0021] The hood body (213) may be provided in a box shape protruding upward from the upper surface of the hob (22) forming a flat surface. For example, the hood body (213) may be provided in a box shape in which the front-to-rear dimension is shorter than the width-to-width dimension.

[0022] And the suction part (212) can be formed to penetrate in the front direction of the hood body (213). Contaminants generated from a cooking appliance placed on the hob (22) can be sucked into the interior of the hood body (213) through the suction part (212) positioned at the rear of the cooking appliance. Inside the hood body (213), contaminants can be sucked downward.

[0023] The downdraft extractor (21) disclosed in prior art 1 may be configured to be able to move up and down relative to the hob (22).

[0024] This downdraft extractor (21) can be inserted into the lower part of the cooking table (4) and then rise to protrude to the upper part of the cooking table (4), and can suck up contaminants while protruding to the upper part of the cooking table (4) in this manner.

[0025] Additionally, the downdraft extractor (21) may descend to the lower part of the cooking table (4) and be re-inserted into the lower part of the cooking table (4).

[0026] In Prior Art 1, the suction part (212) is positioned at the front lower part of the hood body (213). When the suction part (212) is positioned at the lower side of the hood body (213) in this manner, as the height of the cooking appliance increases—that is, as the point where the contaminant is generated increases—a problem arises in which the distance between the point where the contaminant is sucked and the point where the contaminant is generated becomes greater.

[0027] As such, if the distance between the point where the pollutant is inhaled and the point where the pollutant is generated increases, the pollutant capture performance of the downdraft extractor (21) is bound to decrease.

[0028] Additionally, when the suction part (212) is positioned on the lower side of the hood body (213), and the height of the cooking appliance is similar to the height of the hood body (213), contaminants generated from the cooking appliance descend from the upper side of the hood body (213) and move toward the suction part (212).

[0029] In this process, contact between the contaminant and the hood body (213) is inevitable over a very wide area, and as a result, the problem of increased contamination on the front surface of the hood body (213) occurs.

[0030] In addition, prior art 2 uses a method to improve the suction performance of downgraft by building a wall so that contaminants generated from the cooking appliance cannot pass over the wall, and forming a suction part in the wall to suck up contaminants stagnant around the suction part.

[0031] Prior art 2 has a complex structure because it requires a wall protruding from the top plate and a flow path to be formed inside the wall, and it has the disadvantage that too much energy is input into the suction fan to improve suction performance.

[0032] In addition, conventionally, a door is installed to open and close the suction port, and the door performs the function of opening and closing the suction port and guiding contaminants entering the suction port. Although suction performance increases as the door becomes longer, there is a problem that the length is limited because it must be stored in the suction port space of the table when not in use.

[0033] [Prior Art Literature]

[0034] [Patent Literature]

[0035] Patent Document 1 - European Published Patent No. 3553388

[0036] Patent Document 2 - Korean Published Patent No. 2024-0002303

[0037]

[0038] The problem that the present disclosure aims to solve is to provide an exhaust device with an improved structure capable of providing enhanced contaminated air capture performance, and a cooking device equipped with the same.

[0039] Another objective of the present disclosure is to provide an exhaust device having a door accommodated in the intake section while improving the intake performance of contaminated air, and a cooking appliance equipped with the same.

[0040] Another objective of the present disclosure is to provide an exhaust device with an improved structure that can suppress external contamination caused by contaminated air, and a cooking appliance equipped with the same.

[0041] Another objective of the present disclosure is to provide an exhaust device that achieves high capture performance with less energy through an air curtain, and a cooking device equipped with the same.

[0042] Another objective of the present disclosure is to provide an exhaust device that maximizes the use of the upper space of the top plate by concealing the exhaust device inside the top plate when not in use, and a cooking appliance equipped with the same.

[0043] Another objective of the present disclosure is to provide an exhaust device capable of producing an air curtain effect using a door that opens and closes an intake portion through which pollutants are discharged, and a cooking device equipped with the same.

[0044] Another objective of the present disclosure is to provide a structure in which a driving unit for driving a door that opens and closes a suction unit is located inside the suction unit, and the door completely covers the suction unit when closed and adheres to the suction unit when opened.

[0045]

[0046] The problems of the present disclosure are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0047] To achieve the above objective, an exhaust device and a cooking device equipped with the same according to one embodiment of the present disclosure comprise at least one cooking area, a top plate having a suction portion formed therein for sucking in contaminant particles generated in the cooking area, and a door for opening and closing the suction portion, wherein the door comprises

[0048] The above door includes a first movable hinge axis that rotates around a first point below the top plate when the door rotates, and a second movable hinge axis that rotates around a second point below the top plate when the door rotates, and is characterized in that when the door is opened, the height of the first movable hinge axis increases and then decreases, and the height of the second movable hinge axis increases.

[0049] When the above door rotates, the first movable hinge axis and the second movable hinge axis can move below the top plate.

[0050] When the door is in an open state, at least a portion of the first movable hinge axis may overlap with the second movable hinge axis in a vertical direction.

[0051] When the door is in a closed state, at least a portion of the first movable hinge axis may overlap with the second movable hinge axis in a horizontal direction.

[0052] The first fluid hinge axis and the second fluid hinge axis can move above the first point and the second point.

[0053] The distance between the first fluid hinge axis and the second fluid hinge axis may be smaller than the distance between the first point and the second point.

[0054] Additionally, the present disclosure further includes a filter installed in the suction part to filter contaminant particles and a filter housing that accommodates the filter, and when the door is closed, the first movable hinge axis and the second movable hinge axis may move away from one side of the filter housing.

[0055] When the above door is opened, the first movable hinge axis and the second movable hinge axis may come close to one side of the filter housing.

[0056]

[0057] Here, the door comprises: a flip cover formed to correspond to the suction part; and a flip door bracket mediating a connection to the side of the suction part of the flip cover; and the first and second movable hinge axes may be formed in the flip door bracket.

[0058] In addition, it may further include a door moving unit that rotates the flip cover via the flip door bracket.

[0059] Additionally, the door moving unit may include a driving motor, a driving link having one end fixed to the motor shaft of the driving motor and the other end hinged to a first movable hinge shaft formed on the flip door bracket, and an interlocking link having one end hinged to the fixed shaft of the suction part and the other end hinged to a second movable hinge shaft formed on the flip door bracket.

[0060] In addition, the motor shaft may be located behind the fixed shaft.

[0061] In addition, the first movable hinge axis may be provided on the flip door bracket at a position closer to one end of the flip cover in the longitudinal direction than the second movable hinge axis.

[0062] In addition, the end of the motor shaft fixed to the drive link is formed to have a non-circular cross-section, and a fixing hole corresponding to the end of the motor shaft with the non-circular cross-section may be formed at one end of the drive link.

[0063] In addition, an interference groove may be machined and formed in the above-mentioned link at a position where overlap and interference occur with the first fluid hinge shaft to which the other end of the above-mentioned driving link is connected.

[0064] In addition, the interference groove may be formed to interfere with the first fluid hinge axis at a position where the flip cover is opened 90 degrees with respect to the suction part.

[0065] In addition, the flip door bracket, the motor shaft, the fixed shaft, the first movable hinge shaft, and the second movable hinge shaft can all be located at least below the lower surface of the flip cover when the flip cover shields the suction part.

[0066] Additionally, the device further includes a filter installed in the suction part to filter contaminant particles and a filter housing that accommodates the filter, and the door moving unit may be provided in the filter housing at either the left end or the right end of the suction part.

[0067] Additionally, the device further includes a filter installed in the suction part to filter contaminant particles and a filter housing that accommodates the filter, and the door moving unit may be provided in the filter housings at the left and right ends of the suction part, respectively.

[0068] In addition, a first magnet may be installed in the rear end of the flip cover in a long left-right direction, and a second magnet that is magnetically coupled with the first magnet may be installed in the flip door bracket in a long left-right direction.

[0069] Additionally, the flip cover may include an inner plate having a rear end magnetically coupled to the flip door bracket, and an outer plate having a first magnet positioned between the inner plate and the outer plate and laminated to the inner plate.

[0070] Additionally, the device further includes a filter installed in the suction part for filtering contaminant particles and a filter housing for accommodating the filter, and the magnetic coupling between the first magnet and the second magnet can be released by the operation in which the front end of the flip cover rotates backward by an external force while the rear end is supported by the filter housing.

[0071] Additionally, a first magnet connector is connected to the rear end of the flip cover, and a second magnet connector is connected to the inner side of the suction part, and the first magnet connector and the second magnet connector may include a conductive terminal capable of conducting electricity while magnetically coupled when the suction part is opened by the flip cover.

[0072] In addition, the vertical cross-sectional shape of the flip cover may become thicker from the front end to the rear end and then thin again.

[0073] In addition, the thickest part of the flip cover may be located closer to the front side at the center between the front and rear ends.

[0074] Additionally, when the suction part is in an open state, the outer plate of the flip cover may form a flat rear surface, and the inner plate of the flip cover may form a front surface with the vertical cross-sectional shape.

[0075] In addition, the first fluid hinge axis may be located further back than the second fluid hinge axis.

[0076] Additionally, an exhaust device according to another embodiment of the present disclosure comprises at least one cooking area and a top plate including a suction part for sucking in contaminant particles generated in the cooking area, a door that opens and closes the suction part and includes a first movable hinge shaft and a second movable hinge shaft, a driving motor, a driving link having one end fixed to the motor shaft of the driving motor and the other end hinge-coupled to the first movable hinge shaft, and an interlocking link having one end hinge-coupled to a fixed shaft inside the suction part and the other end hinge-coupled to the second movable hinge shaft, wherein when the door is opened, the height of the first movable hinge shaft increases and then decreases, and the height of the second movable hinge shaft increases.

[0077] Specific details of other embodiments are included in the detailed description and drawings.

[0078] According to the exhaust device of the present disclosure and the cooking device equipped with the same, one or more of the following effects are provided.

[0079] The present disclosure has the advantage of significantly improving the capture performance of an exhaust device with less energy compared to simply increasing the airflow velocity of air sucked in from the intake section, by forming an intake section into which pollutants are sucked in on a top plate and forming an air curtain that discharges from the top toward the intake section, thereby accelerating the suction of pollutants sucked into the intake section and restricting the movement of pollutants away from the intake section.

[0080] In addition, the present disclosure has the advantage that the door for opening and closing the intake section closes the intake section when the exhaust device is not in use and opens the intake section when the exhaust device is in use, thereby preventing the intake section from being blocked or contaminated by external contaminants when not in use and improving the intake performance when in use.

[0081] In addition, the present disclosure has a door that opens and closes the suction section, having a structure in which two plates are hinge-connected, and when the door is closed, the two plates are received within the suction section, and when the door is open, the two plates are arranged in a straight line, and the width of the door becomes larger than the width of the suction section, so that most of the contaminants escaping to the rear of the suction section can be guided into the suction section.

[0082] In addition, the present disclosure has the advantage of being able to adjust the height of the air curtain section located above the intake section and, by adjusting the height of the air curtain section according to the height of the cooking appliance, further significantly improving the capture performance of the exhaust device.

[0083] In addition, the present disclosure is provided with a plurality of suction parts for sucking in contaminants and a plurality of air curtain parts corresponding to each suction part. When there are multiple cooking appliances, the height of each air curtain part is adjusted according to the height of the contaminants discharged from each cooking appliance, and each suction part and air curtain part is operated separately. This provides the advantage of saving energy when only some of the multiple cooking areas are used.

[0084] In addition, the present disclosure has the advantage of further significantly improving the capture performance of the exhaust device by defining a surface that intersects the top plate and is located at the rear of the air curtain section and the intake section when the door for opening and closing the intake section is open, thereby guiding some of the contaminants that escape from the vicinity of the intake section to the rear of the intake section to the intake section when contaminants are guided by the curtain-shaped air discharged from the air curtain section.

[0085] In addition, the present disclosure has a structure in which, when the door opening and closing the intake section is open, the surface near the intake section becomes thicker from the bottom to the top and then thins again, and when the contaminants are guided by the curtain-shaped air discharged from the air curtain section, almost all contaminants escaping from the vicinity of the intake section to the rear of the intake section are guided to the intake section.

[0086] In addition, the present disclosure has the advantage that since the air curtain section is supported by two columns, there is an empty space between the air curtain section and the intake section, thereby minimizing contact between the contaminated air and the exhaust device while inhaling the contaminated air, so the exterior of the exhaust device can be kept clean.

[0087] In addition, the present disclosure can achieve the effect of an indirect air curtain through a door that opens and closes the intake section without having to provide a separate air curtain section.

[0088] In addition, the present disclosure has the advantage that when the door rotates, the two movable hinge shafts of the door move inside the suction part and the driving part is located inside the suction part, so that when the door rotates, the driving part and the movable hinge shafts are not exposed to the outside, the door rotates in a narrow space, and the door completely seals the suction part.

[0089] The effects of the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0090] FIG. 1 is a perspective view showing a cooking device according to one embodiment of the present invention installed on a main body.

[0091] FIG. 2 is a perspective view of the exhaust device shown in FIG. 1 and a cooking device equipped with the same.

[0092] FIG. 3 is a cross-sectional view taken along line 3-3 in which the main body of FIG. 2 is omitted.

[0093] Figure 4 is a plan view of the state in which the top plate and heating device in Figure 3 have been removed.

[0094] FIG. 5 is a perspective view illustrating the main body shown in FIG. 2 and the moving device that moves the main body.

[0095] Figure 6 is a drawing showing the main body moved downward in Figure 5.

[0096] FIG. 7 is an exploded perspective view showing the main body and moving device in FIG. 5.

[0097] Figure 8 is a cross-sectional view taken along line 8-8 of Figure 2.

[0098] Figure 9 is a cross-sectional view of the air curtain section of Figure 2 cut along the horizontal plane.

[0099] Figure 10 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 1.

[0100] Figure 11 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 2.

[0101] FIG. 12 is a flow analysis of contaminants to determine the suction performance of contaminants according to one embodiment of the present disclosure.

[0102] FIG. 13 is a perspective view of a cooking appliance according to another embodiment of the present disclosure.

[0103] FIG. 14 is a cross-sectional view of the first air curtain section of FIG. 13 taken along a plane parallel to the horizontal plane.

[0104] FIG. 15 is a block diagram illustrating the control configuration of an exhaust device and a cooking device equipped with the same according to one embodiment of the present disclosure.

[0105] FIG. 16 is a perspective view showing a door moving unit according to one embodiment of the present disclosure.

[0106] FIGS. 17a to 17c are perspective views showing the opening and closing of a door by a door moving unit according to one embodiment of the present disclosure.

[0107] FIGS. 18a to 18c are cross-sectional views of FIGS. 17a to 17c, respectively.

[0108] FIG. 19 is a conceptual diagram of a cooking appliance according to another embodiment of the present disclosure.

[0109] FIG. 20 is a perspective view showing the opening and closing of a door according to another embodiment of the present disclosure.

[0110] FIG. 21a is a cutaway perspective view taken along line 21-21 of FIG. 20, showing a detachable door structure.

[0111] FIG. 21b is a cutaway perspective view taken along line 21-21 of FIG. 20, showing the detachable structure of the door.

[0112] FIGS. 22a and FIGS. 22b are cross-sectional views showing the detachable view of a door according to another embodiment of the present disclosure.

[0113] FIGS. 23a and FIGS. 23b are cutaway perspective views showing the opening and closing of a door according to another embodiment of the present disclosure.

[0114] FIG. 24 is an exploded perspective view showing a door moving unit for opening and closing a door according to another embodiment of the present disclosure.

[0115] FIGS. 25a to 25c are cross-sectional views showing the opening and closing of a door at different angles using the door moving unit of FIG. 24.

[0116] FIG. 26 is a cross-sectional view of a door according to another embodiment of the present disclosure.

[0117] FIG. 27 is a cross-sectional view of a door according to another embodiment of the present disclosure.

[0118] Figure 28 is a flow analysis of contaminants to determine the suction performance of contaminants according to Example 1.

[0119] FIG. 29 is a flow analysis of contaminants to determine the suction performance of contaminants according to one embodiment of the present disclosure.

[0120] FIG. 30 is a flow analysis of contaminants to determine the suction performance of contaminants according to one embodiment of the present disclosure.

[0121]

[0122] The aforementioned objectives, features, and advantages will be described in detail below with reference to the attached drawings, and accordingly, a person skilled in the art to which the present invention pertains will be able to easily implement the technical concept of the present invention. In describing the present invention, a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention.

[0123] Detailed descriptions are omitted where deemed necessary. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0124] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0125] The present invention is not limited to the embodiments disclosed below, but can be modified and implemented in various different forms. The embodiments provided are merely intended to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Accordingly, the present invention should be understood not to be limited to the embodiments disclosed below, but to include all modifications, equivalents, and substitutions that fall within the technical spirit and scope of the present invention, as well as substituting or adding the configuration of one embodiment with the configuration of another embodiment.

[0126] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; rather, it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the invention. In the drawings, components may be depicted as being exaggeratedly large or small in size or thickness for the sake of convenience of understanding, but the scope of protection of the invention should not be interpreted restrictively as a result thereof.

[0127] The terms used in this specification are used merely to describe specific embodiments or examples and are not intended to limit the invention. Furthermore, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms such as "includes" or "consists of" in this specification are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this specification. That is, terms such as "includes" or "consists of" in this specification should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0128] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. said terms are used solely for the purpose of distinguishing one component from another.

[0129] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0130] When it is stated that one component is "above" or "below" another component, it should be understood that it is not only placed directly above the other component, but that another component may also exist in between.

[0131] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0132] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise, and "C to D" means C or more and D or less unless specifically stated otherwise.

[0133]

[0134] FIG. 1 is a perspective view showing a cooking device (1) installed on a main body according to one embodiment of the present invention, and FIG. 2 is a perspective view of an exhaust device (10) shown in FIG. 1 and a cooking device (1) equipped with the same.

[0135] Referring to FIGS. 1 and FIGS. 2, a cooking device (1) according to one embodiment of the present invention may include a heating device (20) and an exhaust device (10).

[0136] The heating device (20) may be positioned above the cooking appliance (1). In this embodiment, a heating device (20) in the form of an electric range is exemplified. The cooking appliance (1) exemplified here includes both electric resistance type electric ranges and induction heating type electric ranges. For convenience of explanation, the embodiment of the present invention will be described with an electric range in which a working coil is provided as a heating part (22). However, the present invention is not limited thereto.

[0137] As an example, the heating device (20) may include a case (101) and a top plate (23).

[0138] The case (101) may be formed in a polygonal shape with an open top. This case (101) can accommodate various internal components constituting the heating device (20) and perform the function of protecting them.

[0139] For example, the case (101) may be formed in the shape of a square box made of aluminum, but the present invention is not limited thereto. Meanwhile, the case (101) may be insulated to prevent the temperature of the outer surface of the case (101) from rising due to heat generated by the working coil.

[0140] A top plate (23) can be placed on the upper part of the case (101). This top plate (23) can shield the upper part of the case (101) and form the upper surface appearance of the heating device (20).

[0141] The top plate (23) can be made of ceramic glass and can be formed into a rectangular flat plate shape with thickness.

[0142] At least one cooking area (23a, 23b) may be provided in the top plate (23). A heating unit (22) may be disposed in the cooking area (23a, 23b). As an example, the heating unit (22) may include a working coil disposed at the bottom of the top plate (23).

[0143] A plurality of cooking zones (23a, 23b) may be provided in the top plate (23). At this time, all heating units (22) placed in the plurality of cooking zones (23a, 23b) may include working coils, and some of the heating units (22) may include working coils, while others may include hot plates that generate heat by heating a metal plate with a heating wire or radiators that generate heat by heating a ceramic plate with a heating wire.

[0144] On the upper part of the top plate (23), more specifically on the upper part of the cooking area (23a, 23b), a heating object such as a cooking utensil heated by the heating unit (22) may be placed.

[0145] An input interface (24) that receives input from a user may be provided on the upper surface of the top plate (23). The input interface (24) is installed so as to be embedded flatly on the upper surface of the top plate (23) and can display a specific image.

[0146] The input interface (24) receives touch input from the user, and the heating device (20) can be driven based on the received touch input.

[0147] A heating device (20) may be installed in a main body (5). The main body (5) may be provided in a predetermined cabinet structure. A space capable of accommodating at least a portion of the heating device (20) and the exhaust device (10) may be formed inside the main body (5).

[0148] For example, the main body (5) may be provided in the form of kitchen furniture, more specifically, a base cabinet. A countertop (11) may be provided on the upper part of the main body (5) provided in the form of kitchen furniture. A heating device (20) and an exhaust device (10) may be installed on the countertop (11).

[0149] For example, the heating device (20) may be installed on the cooking table (11) in such a way that at least a portion is exposed to the upper side of the cooking table (11) and the remaining portion is inserted to the lower side of the cooking table (11). At this time, the top plate (23) may be exposed to the upper side of the cooking table (11), and the case (101) (21) and the heating unit (22) may be positioned to the lower side of the cooking table (11).

[0150] As another example, the main body (5) may be provided in the form of a cooking appliance (1) including an oven. In this case, the heating device (20) and the exhaust device (10) installed on the upper surface of the main body (5) may be positioned above the cooking chamber of the oven.

[0151] The exhaust device (10) is configured to collect smoke, steam, contaminant particles, etc. (hereinafter collectively referred to as "contaminated air") generated around the exhaust device (10). This exhaust device (10) may be positioned adjacent to the heating device (20).

[0152] In this embodiment, the heating device (20) and the exhaust device (10) are installed on the cooking table (11), and the exhaust device (10) is positioned behind the heating device (20). The directions described in the specification are based on the directions of FIG. 2. Specifically, a direction parallel to the direction of the top plate (23) may be defined as the front (F) and the rear (R), a direction parallel to the direction of the top plate (23) and perpendicular to the front (F) and rear (R) may be defined as the left-right direction (Le, Ri), and a direction perpendicular to the front (F), rear (R), and left-right direction (Le, Ri) may be defined as the up-down direction (UD).

[0153] This exhaust device (10) can collect contaminated air generated from a heated object, such as a cooking utensil placed on a heating device (20). The air collected by the exhaust device (10) can be transported through the interior of the exhaust device (10) to the interior or exterior of the main body (5).

[0154] A part of the exhaust device (10) may be installed so as to protrude from the main body (5). This part of the exhaust device (10) may be installed in the main body (5) so as to protrude above the cooking table (11) or be received inside the main body (5).

[0155] As another example, part of the exhaust device (10) can be installed so as to be accessible on the top plate (23) of the case (101).

[0156] The exhaust device (10) is configured to collect contaminated air generated around the exhaust device (10) and can be configured to be vertically movable.

[0157] A portion of this exhaust device (10) may be protruding above the countertop (11) or case (101) to collect contaminated air. Additionally, the exhaust device (10) may descend toward the interior of the main body (5) and be inserted into the interior of the main body (5) or case (101).

[0158]

[0159] The structure of the exhaust device (10) is described below.

[0160] FIG. 3 is a cross-sectional view taken along line 3-3 in which the air curtain section (111) and the main body (112, 113) of FIG. 2 are omitted, and FIG. 4 is a plan view of FIG. 3 with the top plate (23) and the heating device (20) removed.

[0161] Referring to FIGS. 2 to 4, the exhaust device (10) may include a top plate (23), an air curtain section (111), and a main body (112, 113).

[0162] As described above, the top plate (23) includes at least one cooking area (23a, 23b) and a suction part (120) for sucking up contaminant particles generated in the cooking area (23a, 23b). The top plate (23) can be defined as the upper surface of the case (101).

[0163] The intake unit (120) may be positioned at the rear of the cooking area (23a, 23b). Specifically, the intake unit (120) may be located on the top plate (23) in the opposite direction of the input interface (24) relative to the cooking area (23a, 23b). If the intake unit (120) is located on the top plate (23) in the opposite direction of the input interface (24) relative to the cooking area (23a, 23b), it directs and discharges contaminated air away from the input interface (24) where the user is located, thereby reducing the amount of contaminated air reaching the user.

[0164] Such a suction portion (120) can be defined as a hole formed in the top plate (23). The suction portion (120) may extend in a second direction. Specifically, the suction portion (120) may extend in the left-right direction and have a predetermined width in the front-rear direction.

[0165] Additionally, one or more suction parts (120) may be formed. Preferably, considering that multiple cooking utensils are cooked in multiple cooking areas (23a, 23b), multiple suction parts (120) are formed spaced apart from each other on the top plate (23), and the multiple suction parts (120) can separately suck in contaminated air.

[0166] Specifically, the suction part (120) may include a first suction part (120a) extending in the left-right direction and a second suction part (120b) extending in the left-right direction, spaced apart from the first suction part (120a) in the left direction.

[0167] The intake section (120) can be connected to an exhaust passage (102, 103) formed inside the case (101). The intake section (120) is formed at one end of the exhaust passage (102, 103), and the other end of the exhaust passage (102, 103) can be connected to the outside or to the interior.

[0168] The exhaust passage (102, 103) may include a first exhaust passage (102) and a second exhaust passage (103) connected to the first exhaust passage (102) and located below the first exhaust passage (102).

[0169] The present disclosure may further include a suction fan (140) connected to a suction unit (120) to provide air flow force to the suction unit (120). One or multiple suction fans (141, 142) may be arranged. In order to individually suck in contaminated air through multiple suction units (120), the number of suction fans (141, 142) may correspond to the number of suction units (120).

[0170] Specifically, the suction fans (141, 142) may include a first suction fan (141) and a second suction fan (142) positioned in the exhaust passage (102, 103). The first suction fan (141) may be in communication with the first suction section (120a), and the second suction fan (142) may be in communication with the second suction section (120b). Accordingly, when the first suction fan (141) is driven, contaminated air is sucked in through the first suction section (120a), and when the second suction fan (142) is driven, contaminated air can be sucked in through the second suction section (120b). The suction fan (140) may include a centrifugal fan or an axial fan.

[0171] The exhaust device (10) may further include a filter (123) for filtering contaminated air. The filter (123) may be installed inside or on the inlet side of the exhaust passage (102, 103) and may serve to filter contaminated air introduced into the exhaust passage (102, 103).

[0172] The filter (123) may be provided in a form including at least one of a pre-filter, an oil-mist filter / grease filter, an odor filter, a dust filter, an odor filter, a germicidal filter, a plasma filter, a UV filter, and an active filter.

[0173] The pre-filter captures large dust and oil particles, and the oil mist filter can be used to remove oil vapor generated during cooking. The deodorizing filter can be composed of activated carbon or the like to remove odors, and the dust collection filter is a filter (123) used to remove fine dust.

[0174] Additionally, the active filter can improve performance by using plasma, ultraviolet light, etc., which decompose odor molecules more effectively without emitting pollutants such as ozone. The filter (123) may be any one of the filters described above or may be composed of a combination of filters.

[0175] The filter (123) may be installed in the exhaust passage (102, 103) adjacent to the intake section (120). A filter housing (124) may be further included for the convenience of replacing and securing the filter (123). The filter housing (124) is installed in the exhaust passage (102, 103), has a space inside through which contaminated air passes, and can secure the filter (123).

[0176] The filter housing (124) has its upper portion inserted into the suction portion (120) and may have a length corresponding to the length of the suction portion (120). The filter housing (124) has a rectangular cross-section and is shaped with parts of the upper and lower portions open.

[0177] The filter (123) may have a length corresponding to that of the suction part (120). To improve the filtering ability of the filter (123), the width of the filter (123) may be greater than the front-to-back width of the suction part (120). The filter (123) may be positioned diagonally in the filter housing (124).

[0178] Additionally, the exhaust device (10) may further include a grille (121) covering a portion of the intake section (120). The grille (121) may be seated on a filter housing (124). The grille (121) may be located below the top plate (23) or have the same height as the top plate (23).

[0179]

[0180] Additionally, in one embodiment of the present disclosure, a door (130) for opening and closing the suction part (120) may be further included. Of course, depending on the embodiment, the door (130) may be omitted.

[0181] The door (130) closes or opens the suction part (120) to cover the suction part (120) from the outside when the exhaust device (10) is not in use, and prevents foreign substances such as dust from entering through the suction part (120).

[0182] The door (130) can be rotatably coupled to the case (101) at a position adjacent to the suction part (120). Specifically, the door (130) is rotatably coupled to the top plate (23) at the rear of the suction part (120). The case (101) may have a door receiving part (104) formed therein, in which one end of the door (130) is received when the door (130) is rotated.

[0183] The door (130) may be extended in a direction parallel to the suction section (120). The length of the door (130) may be equal to the length of the suction section (120) or greater than the length of the suction section (120). The width (W2) of the door (130) may be equal to the front-to-back width of the suction section (120) or greater than the front-to-back width of the suction section (120).

[0184] The door (130) can be driven by a door moving unit of various embodiments described below.

[0185] In the open state, the door (130) can define a surface that intersects the extension direction of the top plate (23) and extends in the extension direction of the suction part (120). Here, the open state of the door (130) means a state in which the door (130) exposes the suction part (120) to the outside.

[0186] When the door (130) is open, it can define a surface that intersects the front-rear and left-right directions and extends in the left-right direction. More preferably, when the door (130) is open, it can define a surface that is orthogonal to the top plate (23).

[0187] In the open state of the door (130), the height of the top of the door (130) is located below the air curtain section (111).

[0188] A detailed description of the door is given in FIGS. 16 to 25c.

[0189]

[0190] Below, the air curtain section (111) and the main body (112, 113) will be described.

[0191] FIG. 5 is a perspective view showing the main body (112, 113) shown in FIG. 2 and a moving device that moves the main body (112, 113); FIG. 6 is a drawing showing the main body (112, 113) moved downward in FIG. 5; and FIG. 7 is an exploded perspective view showing the main body (112, 113) and the moving device in FIG. 5.

[0192] Referring to FIGS. 5 to 7, the main body (112, 113) supports the air curtain section (111) so that it is positioned on the top plate (23) and moves the air curtain section (111). The air curtain section (111) and the main body (112, 113) can be collectively referred to as the upper exhaust module (110).

[0193] The main body (112, 113) supports both ends of the air curtain section (111). If the main body (112, 113) is in the form of a column supporting both ends of the air curtain section (111), the area below the air curtain section (111) is empty, so the possibility of contaminants contaminating the exhaust device (10) is reduced.

[0194] Specifically, the main body (112, 113) is installed to slide in a first direction intersecting the extension direction of the top plate (23) and includes a first post (112) connected to one end of the air curtain section (111) and a second post (113) installed to slide in the first direction on the top plate (23) and connected to the other end of the air curtain section (111). The first post (112) and the second post (113) extend in the vertical direction.

[0195] The air supply fan (119a, 119b) that supplies air to the air curtain section (111) may be installed inside the air curtain section (111), but it is preferable to install it at the bottom of at least one of the first post (112) and the second post (113).

[0196] Specifically, the supply fans (119a, 119b) may include a first supply fan (119a) installed at the bottom of the first post (112) and a second supply fan (119b) installed at the bottom of the second post (113).

[0197] When installed at the bottom of the first post (112) and the second post (113) of the supply fan (119a, 119b), a supply air passage may be formed inside at least one of the first post (112) and the second post (113). The supply air passage may include a first supply air passage (118a) formed inside the first post (112) and connected to one end of the air curtain, and a second supply air passage (118b) formed inside the second post (113) and connected to the other end of the air curtain. Due to this structure, the volume of the air curtain section (111) can be reduced.

[0198] The main body (112, 113) and the air curtain section (111) may be formed as separate members or as a single member. In FIG. 7, the exhaust module (110) is shown to include a lower body (110b) in which a part of the main body (112, 113) and the air curtain section (111) is formed, and an upper body (110a) in which another part of the main body (112, 113) and the air curtain section (111) is formed and which is coupled to the lower body (110b), but is not limited thereto.

[0199]

[0200] The main body (112, 113) can be installed so as to be movable in the case (101). Specifically, the main body (112, 113) can be installed so as to be slidably on a slide body (117) fixed to the case (101).

[0201] The slide body (117) may be fixed to the case (101) or installed inside the case (101). The slide body (117) may have various shapes. Specifically, the slide body (117) may have a plate shape with the left and right ends protruding forward, and may form a receiving groove (117a) that extends vertically in the center to define a space where a height adjustment motor (115) is placed.

[0202] Between the left end of the slide body (117) and the receiving groove (117a), a first mounting space (117b) that encloses a part of the first suction part (120a) may be formed, and between the right end of the slide body (117) and the receiving groove (117a), a second mounting space (117c) that encloses a part of the second suction part (120b) may be formed.

[0203] The first mounting space (117b) and the second mounting space (117c) may be areas where the slide body (117) is recessed inward. The first suction part (120a) may be located in the first mounting space (117b), and the second suction part (120b) may be located in the second mounting space (117c).

[0204] The exhaust device (10) may include a height adjustment motor (115) that provides driving force to the main body (112, 113) and a rack gear (191) that meshes with a pinion gear (not shown) connected to and rotated by the height adjustment motor (115).

[0205] The rack gear (191) is coupled to the slide body (117). Specifically, the rack gear (191) can be received in the receiving groove (117a).

[0206] The height adjustment motor (115) can be connected to the main body (112, 113). Preferably, the exhaust device (10) may further include a support bar (116) connecting the first post (112) and the second post (113) to use one height adjustment motor (115). The height adjustment motor (115) is coupled to the support bar (116).

[0207] Additionally, the exhaust device (10) may further include a guide rail (192) installed on the slide body (117) to guide the movement of the main body (112, 113), and a sliding bar (193) coupled to the support bar (116) to slide along the guide rail (192). The support bar (116) may be directly connected to the first post (112) and the second post (113), but it is preferable that it be connected by side brackets (114a, 114b).

[0208] The side brackets (114a, 114b) separate the support bar (116) from the rear of the first post (112) and the second post (113). Since the side brackets (114a, 114b) are joined in contact with two faces of the first post (112) or the second post (113), the joining force is strengthened.

[0209] In particular, referring to FIGS. 2 and FIGS. 5, the air curtain section (111) discharges air toward the intake section (120). The air curtain section (111) may be positioned to overlap in a direction that intersects the extension direction of the intake section (120) and the top plate (23). Specifically, the air curtain section (111) may be positioned to overlap with the intake section (120) in an up-and-down direction.

[0210] The air curtain section (111) extends in the left and right directions. The length of the air curtain section (111) may be equal to the length of the suction section (120) or greater than the length of the suction section (120). The width of the air curtain section (111) in the front-rear direction may be equal to the front-rear width of the suction section (120) or greater than the front-rear width of the suction section (120).

[0211] The air curtain section (111) can be positioned in front of the door (130) when the door (130) is open.

[0212] The air curtain section (111) strongly discharges air in the shape of a long plate or curtain in the left-right direction from the upper part of the intake section (120) toward the intake section (120), thereby accelerating the contaminated air flowing into the intake section (120) and guiding a portion of the contaminated air that flows to the rear of the intake section (120) without flowing into the intake section (120) back into the intake section (120). The air discharged from the air curtain section (111) may have a planar shape parallel to the vertical direction and the left-right direction.

[0213]

[0214] Below, a structure in which an air curtain unit (111) discharges curtain-shaped air is described.

[0215] FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 2, and FIG. 9 is a cross-sectional view taken along the horizontal plane of the air curtain section (111) of FIG. 2.

[0216] Referring to FIGS. 8 and 9, the air curtain section (111) receives air from the supply air passage of the main body (112, 113) through an internal air passage and discharges air along the curved surface of the air curtain section (111), and as the discharged air moves along the curved surface, the direction of the air changes and is discharged in the direction of the intake section (120).

[0217] Specifically, the air curtain section (111) includes an air body (211), a discharge section (215), and an air guide (210).

[0218] The air body (211) may define a curtain channel (213) that communicates with the supply air channel inside. The width (W1) of the curtain channel (213) may be constant, but since the air pressure decreases as it moves away from the post and the flow velocity of the line-shaped air discharged through the discharge section (215) changes, it is desirable for the width (W1) of the curtain channel (213) to decrease as it moves away from the post. Specifically, the width of the curtain channel (213) may decrease as it moves away from the first post (112) and the second post (113). Of course, the cross-sectional area of ​​the curtain channel (213) may decrease as it moves away from the post.

[0219] The curtain channel (213) extends in the left and right directions. The curtain channel (213) may include a first curtain channel (213a) connected to the first intake channel (118a) and a second curtain channel (213b) connected to the second intake channel (118b). The width and cross-sectional area of ​​the first curtain channel (213a) may decrease as it moves away from the first post (112), and the width and cross-sectional area of ​​the second curtain channel (213b) may decrease as it moves away from the second post (113).

[0220] The first curtain channel (213a) and the second curtain channel (213b) may or may not be connected to each other.

[0221] The discharge section (215) discharges air from the curtain passage (213) to the outside of the air body (211). The discharge section (215) extends in the left-right direction. The discharge section (215) has an air gap connected to the curtain passage (213) and has a shape that is long in the left-right direction and short in the front-back direction. The discharge section (215) discharges air so that the air discharged from the discharge section (215) flows while in contact with the air guide (210).

[0222] The length of the discharge section (215) may be equal to or greater than the length of the suction section (120). The discharge section (215) may include a first discharge section (215a) connected to the first curtain channel (213a) and a second discharge section (215b) connected to the second curtain channel (213b).

[0223] The air body (211) may have a curtain channel (213) formed inside. Additionally, the air body (211) and the air guide (210) may together define the discharge section (215) and the curtain channel (213). Below, the description is based on the air body (211) and the air guide (210) together defining the discharge section (215) and the curtain channel (213).

[0224] The air body (211) defines a space open in the downward and left-right directions and extends in the left-right direction. Specifically, the air body (211) may include a first air member (211a), a second air member (211b) defining a surface intersecting the first air member (211a) at one end of the first air member (211a), and a third air member (211c) defining a surface intersecting the first air member (211a) at the other end of the first air member (211a).

[0225] One end of the air guide (210) is spaced apart from the second air guide (210), and the other end of the air guide (210) is connected to the third air member (211c). Of course, the other end of the air guide (210) and the third air member (211c) can be connected by the fourth air member (218). That is, the air guide (210) defines a part of the lower surface of the air curtain section (111).

[0226] The air guide (210) is spaced apart from the first air member (211a), and a curtain channel (213) is formed between the air guide (210) and the first air member (211a). At this time, a channel wall (212) connecting the air guide (210) and the first air member (211a) is formed to determine the width of the curtain channel (213).

[0227] The Euro wall (212) may be positioned closer to the second air member (211b) as it moves away from the first post (112) or the second post (113). The Euro wall (212) may have an incline with the second air member (211b).

[0228] The discharge section (215) is defined as the space between the air body (211) and one end of the air guide (210). Specifically, the discharge section (215) may be defined as the space between the second air member (211b) of the air body (211) and the front end of the air guide (210).

[0229] The air body (211) may further include a discharge guide (214) to allow air discharged from the discharge section (215) to flow while in surface contact with the air guide (210).

[0230] A portion of the discharge guide (214) may be positioned to overlap with the front end of the air guide (210) in the vertical direction. The discharge guide (214) may extend in the left-right direction. Specifically, the front end of the discharge guide (214) may overlap in the vertical direction with the space between the air guide (210) and the second air member (211b), and the rear end of the discharge guide may overlap in the vertical direction with the front end of the air guide (210).

[0231] A portion of the discharge guide (214) may include a surface parallel to the lower surface of the front end of the air guide (210). Of course, another portion of the discharge guide (214) may have a curved surface not parallel to the lower surface of the front end of the air guide (210).

[0232] Specifically, the rear end of the discharge guide (214) can protrude upward. Through this structure, vortices occurring in the discharge guide (214) can be prevented.

[0233] The air guide (210) changes the direction of the air discharged from the discharge section (215). Additionally, the air guide (210) determines the shape of the air discharged from the discharge section (215) at the rear end of the air guide (210) and accelerates the air. The air discharged from the air guide (210) may have a surface shape that intersects with the top plate (23).

[0234] For example, the air guide (210) may include a curved surface having multiple curvatures. Specifically, the air guide (210) includes a first curved surface (216) having a first curvature and a second curved surface (217) having a second curvature greater than the first curvature. That is, the radius of curvature (R1) of the first curved surface (216) is greater than the radius of curvature (R2) of the second curved surface (217).

[0235] The front end of the first curved surface (216) overlaps with the discharge guide (214) in a vertical direction, and the rear end of the first curved surface (216) is connected to the front end of the second curved surface (217). The rear end of the second curved surface (217) is connected to the air body (211).

[0236] The tangential direction of one end of the second curved surface (217) is directed toward the suction part (120). Specifically, the tangential direction of the rear end of the second curved surface (217) may be directed toward the rear end of the suction part (120). More specifically, the tangential direction of the rear end (217a) of the second curved surface (217) may be parallel to the up-down direction. The tangential direction of the front end of the first curved surface (216) may have an acute angle of inclination with respect to the top plate (23).

[0237] The discharge unit (215) discharges air so that the discharged air flows in contact with the first curved surface (216). The discharged air flows along the first curved surface (216) and the second curved surface (217) due to the Coanda effect, and when it leaves the rear end of the first curved surface (216), it takes the form of a curtain that extends in the vertical direction and the front-back direction.

[0238] Due to this Coanda effect, contaminated air discharged from the cooking appliance does not fly to the rear or upper part of the intake section (120), but is drawn into the intake section (120).

[0239] Referring to FIG. 9, the internal space of the air body (211) is divided in the left and right directions by partition walls (219), and a first flow path wall (212a) is formed to connect the first curtain flow path (213a), the first discharge section (215a), and the first supply air flow path (118a), and a second flow path wall (212b) is formed to connect the second curtain flow path (213b), the second discharge section (215b), and the first supply air flow path (118a). Through this structure, air can be discharged individually from the first discharge section (215a) and the second discharge section (215b).

[0240] The air curtain section (111) exposes the suction section (120) on the top plate (23) when open and covers the suction section (120) on the top plate (23) when closed. If a door (130) is present, the air curtain section (111) covers the door (130) that covers the suction section (120) when closed.

[0241]

[0242] Figure 10 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 1.

[0243] Referring to FIG. 10, Comparative Example 1 has a structure in which an intake port is positioned on a wall protruding upward from the top plate at the rear of the cooking appliance. In this structure, some of the contaminated air is not drawn into the intake port due to convection caused by heat generated from the cooking appliance and flows into the room.

[0244]

[0245] Figure 11 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 2.

[0246] Referring to FIG. 11, Comparative Example 2 is a structure in which an intake port is formed on the top plate at the rear of the cooking appliance. That is, Comparative Example 2 is a downdraft structure that sucks in contaminated air through the bottom.

[0247] In the case of such a structure, a large portion of the contaminated air is unable to be drawn into the intake due to convection caused by the heat generated by the cooking appliance and instead flows into the room.

[0248]

[0249] FIG. 12 is a flow analysis of contaminants to determine the suction performance of contaminants according to one embodiment of the present disclosure.

[0250] By sucking in contaminated air through the intake section (120) formed on the top plate (23) and forming an air curtain from the upper part of the intake section (120) toward the intake section (120), the air discharged from the air curtain section (111) is guided to the intake section (120) from the upper part of the cooking appliance and the air between the upper part and the rear of the cooking appliance, so that almost all contaminated air discharged from the cooking appliance is introduced into the intake section (120). Accordingly, the exhaust device (10) of the present disclosure has improved contaminated air capture performance.

[0251]

[0252] FIG. 13 is a perspective view of a cooking appliance according to another embodiment of the present disclosure, and FIG. 14 is a cross-sectional view of the first air curtain part (111a') of FIG. 13 cut along a plane parallel to the horizontal plane.

[0253] Compared to the embodiment of FIG. 2 (the first embodiment), the cooking appliance according to another embodiment of the present disclosure (the second embodiment) has a difference in that the first air curtain section (111a') and the second air curtain section (111b') are separated and their heights are adjusted separately. Hereinafter, the differences between the first embodiment and the second embodiment will be described mainly, and any configurations not specifically described will be considered identical to the first embodiment.

[0254] One end of the first air curtain section (111a') is connected to the first post (112), and one end of the second air curtain section (111b') is connected to the second post (113). The first post (112) and the second post (113) are each slid on the slide body (117).

[0255] Two height adjustment motors (115) are provided in the first post (112) and the second post (113), and two rack gears that mesh with the pinion gear of each height adjustment motor (115) may be provided in the slide body (117).

[0256] Since multiple intake units (120) separately inhale contaminated air and multiple air curtain units (111) are each height-adjustable and form an air curtain, the contaminated air capture performance can be maximized by taking into account characteristics such as the height of multiple cooking appliances.

[0257]

[0258] FIG. 15 is a block diagram illustrating the control configuration of an exhaust device (10) and a cooking device (1) equipped with the same according to one embodiment of the present disclosure.

[0259] The exhaust device (10) of the present embodiment may further include a height measuring unit (320) and a control unit (310). The height measuring unit (320) is configured to measure the height of a cooking appliance placed in a cooking area (23a, 23b).

[0260] For example, the height measuring unit (320) may include a plurality of distance sensors arranged in the vertical direction. The plurality of distance sensors may be installed on the main body (112, 113), and each distance sensor may be spaced apart at a predetermined interval in the vertical direction.

[0261] The height of an object can be measured using multiple distance sensors arranged in this manner. For example, the height of the object can be measured by identifying which distance sensor is positioned at the highest location among the distance sensors that detect that the object is within a specified distance.

[0262] As another example, the height measuring unit (320) may include a camera installed in the air curtain unit (111) to acquire images of the cooking appliance and its surroundings.

[0263] The control unit (310) adjusts the height of the air curtain unit (111) according to the height of the cooking appliance. Specifically, since suction performance is improved when the height of the air curtain unit (111) is higher than the height of the cooking appliance, the control unit (310) can adjust the height of the air curtain unit (111) to be higher than the height of the cooking appliance. Additionally, the control unit (310) can adjust the height of the air curtain unit (111) to a height of 130% to 150% of the height of the cooking appliance.

[0264] The control unit (310) analyzes the image obtained from the height measuring unit (320) to detect the height of the cooking appliance and whether the heating device (20) of the cooking appliance is operating. When the heating device (20) is operating, the control unit (310) operates the suction fan (140) and the supply fan (119), opens the door, and adjusts the height of the air curtain unit (111).

[0265] As another example, the height measuring unit (320) may not be installed in the air curtain unit (111) but may be installed in the door (130) that opens and closes the suction unit (120). That is, a plurality of distance sensors or cameras corresponding to the height measuring unit (320) may be installed in the door (130), and the height of the cooking appliance can be measured even when the air curtain unit (111) does not protrude above the top plate (23) through the suction unit (120).

[0266]

[0267] The structure and operation of the door (130) will be described in detail below.

[0268] FIG. 16 is a perspective view showing a door moving unit according to one embodiment of the present disclosure, FIG. 17a to 17c are perspective views showing the opening and closing of a door by the door moving unit according to one embodiment of the present disclosure, and FIG. 18a to 18c are cross-sectional views of FIG. 17a to 17c.

[0269] Referring to FIGS. 16 to 18c, the door (130) closes or opens the suction part (120) so that when the exhaust device (10) is not in use, the suction part (120) is covered from the outside and foreign substances such as dust are not introduced through the suction part (120).

[0270] The door (130) can be rotatably coupled to the case (101) at a position adjacent to the suction part (120). Specifically, the door (130) is rotatably coupled to the top plate (23) at the rear of the suction part (120). The case (101) may have a door receiving part (104) formed therein, which receives a part of the door (130) when the door (130) is rotated.

[0271] The door receiving portion (104) is located below the top plate (23) within the suction portion (120) and can provide a surface that supports one end of the door (130).

[0272] For example, the intake section (120) may be divided into an intake space (120-1) in which a filter housing (124) is located and which communicates with the exhaust passage (102, 103), and a receiving space (120-2) in which a door receiving section (104) is located. The intake space (120-1) may be located further forward than the receiving space (120-2).

[0273] In the open state, the door (130) can define a surface that intersects the extension direction of the top plate (23) and extends in the extension direction of the suction part (120). Here, the open state of the door (130) means a state in which the door (130) exposes the suction part (120) to the outside.

[0274] When the door (130) is open, it can define a surface that intersects the front-rear and left-right directions and extends in the left-right direction. More preferably, when the door (130) is open, it can define a surface that is orthogonal to the top plate (23).

[0275] The door (130) may be extended in a direction parallel to the suction section (120). The length of the door (130) may be equal to the length of the suction section (120) or greater than the length of the suction section (120). The width (W2) of the door (130) may be equal to the front-to-back width of the suction section (120) or greater than the front-to-back width of the suction section (120). Here, the width of the door (130) is the sum of the width (W21) of the first plate (133) and the width (W22) of the second plate (131).

[0276] When the width of the door (130) is greater than the front-to-back width of the suction section (120), if the door (130) is a single plate structure, the door (130) is exposed to the outside of the suction section (120) when the door (130) is closed. The longer the door (130), the greater the suction performance of the suction section (120).

[0277] Accordingly, in order to increase suction performance and accommodate the door (130) in the suction part (120), the door (130) according to one embodiment includes a first plate (133) and a second plate (131). Of course, the door (130) may further include a moving unit for moving the second plate (131).

[0278] The first plate (133) and the second plate (131) are hinge-connected so that when the door (130) is closed (see FIG. 17a, 18a), the first plate (133) and the second plate (131) are folded so that the second plate (131) covers the suction part (120) and the first plate (133) is covered by the second plate (131).

[0279] In the closed state of the door (130), the first plate (133) is located inside the suction part (120), and the second plate (131) is located inside the suction part (120). Of course, according to the embodiment, in the closed state of the door (130), the first plate (133) is located inside the suction part (120), and at least a portion of the second plate (131) may be located inside the suction part (120). In the closed state of the door (130), the second plate (131) may be located on top of the second plate (131).

[0280] In the closed state of the door (130), the second plate (131) may define a surface parallel to the top plate (23). Of course, in the closed state of the door (130), the second plate (131) may be positioned at the same height as the top plate (23). In the closed state of the door (130), the first plate (131) may define a surface inclined to the top plate (23).

[0281] In the open state of the door (130) (Fig. 17c, Fig. 18c), the first plate (133) and the second plate (131) are spread out in a straight line, the second plate (131) is positioned outside the suction part (120), part of the first plate (133) is positioned outside the suction part (120), and another part of the first plate (133) is positioned inside the suction part (120).

[0282] Accordingly, when the door (130) is in the open state, the width of the door (130) becomes the sum of the widths of the first plate (133) and the second plate (131). Of course, when the door (130) is in the open state, the width of the door (130) exposed to the upper part of the suction part (120) also becomes the sum of the width of the first plate (133) and a portion of the width of the second plate (131).

[0283] Accordingly, the width of the door (130) increases, and the suction performance through the suction part (120) is improved.

[0284] One end of the first plate (133) is hinge-connected to the case (101) within the suction part (120). Specifically, the first plate (133) is hinge-connected to the first hinge (133a) of the door connecting part (139), and the door connecting part (139) can be located in the door receiving part (104) of the receiving space (120-2).

[0285] The second plate (131) is hinge-connected to the other end of the first plate (133). Specifically, one end of the second plate (131) is hinge-connected to the other end of the first plate (133) by the second hinge (131a). The one end of the second plate (131) is folded around the second hinge (131a) and the other end of the first plate (133), and the first plate (133) is folded around the first hinge (133a).

[0286] The first hinge (133a) and the second hinge (131a) include a rotation axis parallel to the longitudinal direction of the door (130) and / or the longitudinal direction of the suction part (120). The first hinge (133a) and the second hinge (131a) have a rotation axis parallel to the left-right direction.

[0287] The second plate (131) has a size and shape corresponding to that of the suction part (120). For example, the second plate (131) may be in the shape of a square plate. The second plate (131) is inserted into the suction part (120) and can cover at least 95% of the suction part (120).

[0288] The width of the second plate (131) is greater than the width of the first plate (133). This is because if the width of the second plate (131) is smaller than the width of the first plate (133), there is little increase in the width of the door (130) when the door (130) is open, and in the closed state of the door (130), the door receiving portion (104) must be configured to be deep in order to accommodate the first plate (133) inside the suction portion (120).

[0289] The sum of the width of the first plate (133) and the width of the second plate (131) is greater than the width of the suction part (120). The width of the second plate (131) may be equal to or smaller than the width of the suction part (120). If the sum of the width of the first plate (133) and the width of the second plate (131) is greater than the width of the suction part (120), then when the door (130) is open, the width of the door (130) becomes greater than the width of the suction part (120), and when the door is closed, the first plate (133) and the second plate (131) are folded so that only the first plate (133) is exposed to the outside.

[0290]

[0291] The door moving unit moves the second plate (131). When the door moving unit moves the second plate (131), the second plate (131) moves while rotating around the second hinge (131a), and the first plate (133) also rotates around the first hinge (133a).

[0292] The door moving unit may include a door rack gear (134), a gear unit (136), and a door motor (135). Additionally, since bending may occur when the door (130) is operated if only one door moving unit is placed at one end of the longitudinal direction of the door (130), two door moving units may be placed at both ends of the longitudinal direction of the door (130).

[0293] One end of the door rack gear (134) is hinged to the second plate (131). The door rack gear (134) is hinged to the second plate (131) by a third hinge (134a). The third hinge (134a) has a rotation axis parallel to the longitudinal direction of the door (130) or the longitudinal direction of the suction part (120). The third hinge (134a) has a rotation axis parallel to the left-right direction.

[0294] The third hinge (134a) may be located at the center of the second plate (131). Additionally, the third hinge (134a) may be located at a point on the second plate (131) between the center of the second plate (131) and the second hinge (131a). If the third hinge (134a) is offset from the center of the second plate (131) toward the free end of the second plate (131), the travel distance of the door rack gear (134) must be increased, which has the disadvantage of making the door rack gear (134) longer.

[0295] The door rack gear (134) can be installed in the case (101) so as to be moved in a direction intersecting the longitudinal direction of the door (130). The door rack gear (134) can be installed in the suction part (120) so as to be moved in a vertical direction.

[0296] In the open state of the door (130), the first hinge (133a), the second hinge (131a), and the third hinge (134a) can be aligned in the vertical direction. In the closed state of the door (130), the first hinge (133a), the second hinge (131a), and the third hinge (134a) can be positioned so as not to overlap each other in the vertical direction.

[0297] The gear unit (136) is gear-coupled to the door rack gear (134). The gear unit (136) transmits the rotational force of the door motor (135) to the door rack gear (134) and causes the door rack gear (134) to reciprocate by the rotation of the door motor (135). The gear unit (136) may include a plurality of gears. A detailed description of the gear unit (136) will be provided later.

[0298] The door motor (135) supplies driving force to the gear unit (136).

[0299] It is preferable that two door moving units be placed at both ends of the door (130) in the longitudinal direction to prevent bending when the door (130) is operated.

[0300] For example, the door moving unit may include a first door rack gear (134a) having one end hinged to one end in the longitudinal direction of the second plate (131), a first gear unit (136a) coupled to the first door rack gear (134a), a first door motor (135a) that supplies driving force to the first gear unit (136a), a second door rack gear (134b) having one end hinged to the other end in the longitudinal direction of the second plate (131), a second gear unit (136b) coupled to the second door rack gear (134b), and a second door motor (135b) that supplies driving force to the second gear unit (136b).

[0301] A first door motor (135a) is installed at one end of the lengthwise direction of the door (130) of the case (101), and a second door motor (135b) is installed at the other end of the lengthwise direction of the door (130) of the case (101). A first door rack gear (134a) is installed at one end of the lengthwise direction of the door (130) of the case (101), and a second door rack gear (134b) is installed at the other end of the lengthwise direction of the door (130) of the case (101). A first gear unit (136a) is rotatably installed at one end of the lengthwise direction of the door (130) of the case (101), and a second gear unit (136b) is rotatably installed at the other end of the lengthwise direction of the door (130) of the case (101).

[0302] The first gear unit (136a) includes a first drive gear (not shown) connected to the shaft of the first door motor (135a), a first door gear (not shown) meshing with the first door rack gear (134a), and a first connecting gear (not shown) connected to the first drive gear and the first door gear.

[0303] The second gear unit (136b) includes a second drive gear (136-1) connected to the shaft of the second door motor (135b), a second door gear (136-3) that meshes with the second door rack gear (134b), and a second connecting gear (136-2) connected to the second drive gear (136-1) and the second door gear (136-3).

[0304] The door moving unit may further include an alignment shaft (137) axially coupled to the first connecting gear and the second connecting gear (136-2). The alignment shaft (137) can match the rotational speed of the first connecting gear and the second connecting gear (136-2) to match the movement speed and distance of the first door rack gear (134a) and the second door rack gear (134b), thereby allowing the door (130) to be folded or unfolded without bending.

[0305] Meanwhile, one embodiment of the present disclosure may further include a filter housing (124) that is installed to be movable up and down in the suction part (120) and a filter moving part that moves the filter housing (124).

[0306] In the closed state of the door (130), the top of the filter housing (124) may be located below the door (130) joint. In the open state of the door (130), the top of the filter housing (124) may be located above the door (130) joint and at the same height as the top of the suction part (120).

[0307] When the filter housing (124) moves up and down in response to the opening and closing of the door (130), the filter housing (124) does not interfere when the door (130) is opened and closed, and the second plate (131) can be easily positioned inside the suction part (120) when the door (130) is closed.

[0308] The filter moving section may include a filter motor (126) and a filter mover (125) that moves the filter housing (124) by the rotational force of the filter motor (126). The filter motor (126) and the filter mover (125) may be accommodated in the suction section (120).

[0309]

[0310] The operation of the door (130) is described in detail below.

[0311] Referring to FIGS. 17a and 18a, when the door (130) is closed, the suction part (120) is completely covered by the second plate (131). The first plate (133) and the second plate (131) are folded, and the filter housing (124) is lowered.

[0312] Referring to FIGS. 17b and 18b, when the door (130) is in a closed state, when the drive motor rotates, the door (130) gear rotates, and when the door (130) gear rotates, the connecting gear and the drive gear rotate, and when the drive gear rotates, the door rack gear (134) moves upward, and when the door rack gear (134) moves upward, the second plate (131) moves upward and rotates around the second hinge (131a), and the first plate (133) also rotates around the first hinge (133a). The filter housing (124) rises.

[0313] Referring to FIGS. 17c and 18c, as the drive motor continues to rotate, the second plate (131) is moved upward and rotated so that it is aligned with the first plate (133). When the first plate (133) and the second plate (131) are aligned in a straight line and the surface where the first plate (133) and the second plate (131) intersect with the top plate (23) is defined, the door (130) is in an open state.

[0314]

[0315] FIG. 19 is a conceptual diagram of a cooking appliance according to another embodiment of the present disclosure.

[0316] Referring to FIG. 19, the cooking appliance according to the embodiment of FIG. 19 has a difference in the shape of the door (130) compared to the embodiment of FIG. 2 (first embodiment). Hereinafter, the differences between the first embodiment and the third embodiment will be described mainly, and any configuration without special description will be considered identical to the first embodiment.

[0317] The free end of the second plate (131) may include a plate inclined surface (131b) having an incline with the width direction of the second plate (131).

[0318] The top plate (23) forming the edge of the suction part (120) may have a top inclined surface (23b) formed thereon.

[0319] The plate inclined surface (131b) and the top inclined surface (23b) can overlap each other in a vertical direction when the door is closed. The plate inclined surface (131b) can protrude forward from the bottom to the top when the door is closed, and the top inclined surface (23b) can protrude backward from the top to the bottom.

[0320]

[0321] FIG. 20 is a perspective view showing the opening and closing of a door according to another embodiment of the present disclosure, FIG. 21a is a cutaway perspective view taken along line 21-21 of FIG. 20 showing the detachable structure of the door, FIG. 21b is a cutaway perspective view taken along line 21-21 of FIG. 20 showing the detachable structure of the door.

[0322] The exhaust device (10) of the present disclosure includes a door (1130) of another embodiment.

[0323] The cooking device (1) of the present embodiment includes a top plate (23) having at least one cooking area (23a, 23b) as referenced in FIG. 20. The edge portion of the top plate (23) may be arranged to be surrounded by an edge plate (23-1).

[0324] The top plate (23) can be installed directly on the upper surface of the case (101) where the cooking device (1) is installed, so that the height of the upper surface is the same, and the rim plate (23-1) can be provided between the top plate (23) and the upper surface of the case (101).

[0325] The top plate (23) may be composed of a ceramic plate that includes cooking areas (23a, 23b), and the rim plate (23-1) may be composed of a marble plate as it is a part unrelated to direct cooking. The rim plate (23-1) composed of a marble plate can enhance the aesthetic design of the cooking appliance (1).

[0326] When the rim plate (23-1) is positioned to surround the top plate (23), the suction portion (120) can be formed in a long left-right direction between the rear end of the top plate (23) and the rim plate (23-1).

[0327] Such a suction part (120) can be shielded (a) or opened (b) by a door (1130) according to another embodiment of the present disclosure, as referenced in (a) and (b) of FIG. 20.

[0328] In addition, the door (1130) according to another embodiment of the present disclosure can be separated and removed from the suction part (120) as referenced in (c) of FIG. 20. This is because, when a filter (123) is placed on the inlet side of the suction part (120), foreign substances such as dust are prevented from entering regardless of whether they protrude or retract to the top plate (23) of the air curtain part (111).

[0329]

[0330] A door (1130) according to another embodiment of the present disclosure may include a flip cover (1130') formed long in the left-right direction as referenced in FIG. 21a and FIG. 21b, and a flip door bracket (1133) that mediates a connection to the suction portion (120) side of the flip cover (1130').

[0331] Here, the flip cover (1130') can be understood as a configuration corresponding to the second plate (131) of the door (130) of an embodiment of the present disclosure described with reference to FIGS. 16 to 19.

[0332] Such a flip cover (1130') includes an inner plate (1131) and an outer plate (1132) joined thereto. The inner plate (1131) is configured such that its lower surface is exposed to the inside of the suction part (120) when the door (1130) covering the suction part (120) is closed, and the outer plate (1132) is configured such that its upper surface is exposed to the outside of the suction part (120) when the door (1130) covering the suction part (120) is closed.

[0333] Among the components of the flip cover (1130'), the inner plate (1131) can be manufactured by molding using a mold with a plastic resin material. This is because the inner plate (1131) is a material that is easy to apply when manufacturing the thickness of the door (130), which will be described later, differently.

[0334] The outer plate (1132) of the flip cover (1130') may be made of glass. This is because, when the top plate (23) is made of a ceramic plate and the surrounding edge plate (23-1) is made of a marble plate, the outer plate is suitable as a material with a surface texture similar to that of the ceramic material and the marble material.

[0335] Such a flip cover (1130') can be detachably coupled to a flip door bracket (1133). For example, the flip cover (1130') can be magnetically coupled to the flip door bracket (1133).

[0336] More specifically, a first magnet (1135) having magnetic properties may be installed in the rear end of the flip cover (1130') in a long left-right direction. A second magnet (1134) that is magnetically coupled with the first magnet (1135) may also be installed in the flip door bracket (1133) in a long left-right direction.

[0337] In the present disclosure, the first magnet (1135) and the second magnet (1134) are provided as a single magnetic body in the shape of a long bar in the left-right direction, but are not limited thereto; it is also possible for a plurality of them to be arranged spaced apart by a predetermined distance on both the left and right sides within the range of the suction part (120).

[0338] The first magnet (1135) can be inserted and fixed in a first magnet installation groove (1131-2) that is pre-prepared at the rear end (1131-1) of the inner plate (1131) before the inner plate (1131) and the outer plate (1132) are joined together. However, the first magnet installation groove (1131-2) is formed to be open toward the stacked outer plate (1132), so it can be embedded so as not to be exposed to the outside by the outer plate (1132).

[0339] Here, the rear end (1131-1) of the inner plate (1131) is a name defined when the door (1130) of the present disclosure is in a state where the suction part (120) is shielded, and when the door (1130) of the present disclosure is in a state where the suction part (120) is open, it may be named the 'lower end' of the inner plate (1131).

[0340] A second magnet installation groove (1133-2) into which a second magnet (1134) is inserted and fixed may also be provided in the flip door bracket (1133). The second magnet (1134) may be fixed in the second magnet installation groove (1133-2) such that the side facing the first magnet (1134) is exposed to the outside.

[0341] The flip door bracket (1133) can serve to mediate the connection between the flip cover (1130') and the door moving unit (1140) described later. Specifically, the flip door bracket (1133) can be linked to the door moving unit (1140) provided in at least one of the filter housings (124) at the left end and right end of the suction part (120).

[0342]

[0343] Meanwhile, the flip cover (1130') can be integrally connected to the flip door bracket (1133) by general fastening elements (not shown), such as screws or bolts, as referenced in FIG. 21b. In this case, if a height measuring unit (320), such as a distance sensor or camera for detecting cooking appliances, is installed on the flip cover (1130'), a signal transmission configuration for transmitting the measured signal may be additionally required.

[0344] To this end, as referenced in FIG. 21b, a first magnet connector (1138) is connected to the rear end of the flip cover (1130'), and a second magnet connector (1139) is connected to the inner side of the suction part (120) (preferably the filter housing (124)). The first magnet connector (1138) and the second magnet connector (1139) may include a conductive terminal (1138a) that is magnetically coupled and capable of conducting electricity when the suction part (120) is opened by the flip cover (1130').

[0345] Therefore, before the air curtain section (111) rises and disappears above the top plate (23), the height of the cooking appliance placed in the cooking area (23a, 23b) is measured in advance through the height measuring section (320), and then the height information signal of the cooking appliance transmitted through the first magnet connector (1138), the second magnet connector (1139), and the power terminal (1138a) mediating the power connection thereof can be used to control the height of the air curtain section (111) in advance.

[0346]

[0347] FIGS. 22a and FIGS. 22b are cross-sectional views showing the detachable view of a door according to another embodiment of the present disclosure.

[0348] The filter housing (124) is formed such that most of the front portion is a space in which a filter (123) is received, and the rear portion of the space in which the filter (123) is received is formed as a receiving space of a door receiving portion (104) in which one end (rear end) of a door (130) is received.

[0349] Here, the door moving unit (1140) is positioned on the side of the door receiving portion (104) of the filter housing (124), and a support step (124-1) on which the rear end of the door (1130) is caught may be formed on the upper side of the rear end of the filter housing (124).

[0350] The support step (124-1) of the filter housing (124) may be a portion where one side of the rear end of the inner plate (1131) is in contact and supported when the flip cover (1130') is opened to 90 degrees at the intake portion (120).

[0351] Referring to FIGS. 22a and 22b, the magnetic coupling between the first magnet (1135) and the second magnet (1134) can be released by the operation in which the front end of the flip cover (1130') is rotated backward by an external force while the rear end is supported by the support step (124-1) of the filter housing (124).

[0352] Therefore, when cleaning or replacement of the flip cover (1130') is required, the user can detach it from the flip door bracket (1133) by releasing the connection between the first magnet (1135) of the flip cover (1130') and the second magnet (1134) of the flip door bracket (1133), and then remove the flip door (1130') from the suction part (120) in an upward oblique direction (see '②' in FIG. 22b) using the empty space allowed by the door receiving part (104).

[0353]

[0354] FIGS. 23a and 23b are cutaway perspective views showing the opening and closing of a door according to another embodiment of the present disclosure, FIG. 24 is an exploded perspective view showing a door moving unit that opens and closes a door according to another embodiment of the present disclosure, and FIGS. 25a to 25c are cross-sectional views showing the opening and closing of a door at different angles using the door moving unit of FIG. 24.

[0355] A door (1300) according to another embodiment of the present disclosure may be provided to rotate on the outside of the suction part (120) with respect to a rear movable hinge axis (1136, 1137) corresponding to the inside of the suction part (120) so as to open and close the suction part (120), as referenced in FIGS. 23a to 24.

[0356] The movable hinge shaft (1136, 1137) may be located below the top plate (23). The movable hinge shaft (1136, 1137) rotates around a point inside the suction part (120) when the door (1300) rotates, and may move inside the suction part or below the top plate (23).

[0357] For example, the movable hinge shaft (1136, 1137) may include a first movable hinge shaft (1136) and a second movable hinge shaft (1137).

[0358] The first movable hinge axis (1136) rotates around the first point (1143) of the suction part (120) when the door (1300) rotates, and the second movable hinge axis (1137) rotates around the second point (1144) of the suction part (120) when the door (1300) rotates. The first point (1143) may be located further from the center of the suction part (120) than the second point (1144). The first point (1143) may be located further back than the second point (1144).

[0359] The first point (1143) and the second point (1144) are located below the top plate (23).

[0360] The first point (1143) is a motor shaft (1143) described later, and the second point (1144) may be a fixed shaft (1144) described later.

[0361] The first movable hinge axis (1136) and the second movable hinge axis (1137) are located further back. Specifically, when the door (1300) is in an open state (when the door (1300) and the top plate (23) intersect, parts of the first movable hinge axis (1136) and the second movable hinge axis (1137) may overlap in the vertical direction.

[0362] The first movable hinge axis (1136) and the second movable hinge axis (1137) may have parts of each other overlapped in the horizontal direction when the door (1300) is in a closed state (when the door (1300) and the top plate (23) are parallel).

[0363] The height of the first movable hinge shaft (1136) may increase and then decrease during the process of opening the door (1300). When the door (1300) is in an open state, the height of the first movable hinge shaft (1136) is higher than the height of the first movable hinge shaft (1136) when the door (1300) is in a closed state.

[0364] The height of the second movable hinge shaft (1137) can increase during the process of opening the door (1300). When the door (1300) is in an open state, the height of the second movable hinge shaft (1137) is higher than the height of the second movable hinge shaft (1137) when the door (1300) is in a closed state.

[0365] When the door (1300) is in an open state, the height of the second movable hinge shaft (1137) may be higher than the height of the first movable hinge shaft (1136).

[0366] When the door (1300) is in a closed state, the height of the second movable hinge shaft (1137) may be equal to or lower than the height of the first movable hinge shaft (1136).

[0367] The distance between the first movable hinge axis (1136) and the second movable hinge axis (1137) may be smaller than the distance between the first point (1143) and the second point (1144). When the door (1300) is opened, the first movable hinge axis (1136) and the second movable hinge axis (1137) may come close to one side of the filter housing (124). Specifically, when the door (1300) is opened, the first movable hinge axis (1136) and the second movable hinge axis (1137) may come close to the rear side (1241) of the filter housing (124).

[0368] When the door (1300) is closed, the first movable hinge axis (1136) and the second movable hinge axis (1137) may move away from one side of the filter housing (124). Specifically, when the door (1300) is closed, the first movable hinge axis (1136) and the second movable hinge axis (1137) may move away from the rear side (1241) of the filter housing (124).

[0369] When the door (1300) is in an open state, the first movable hinge axis (1136) may be located further away from the filter housing (124) than the second movable hinge axis (1137). Specifically, when the door (1300) is in an open state, the first movable hinge axis (1136) may be located further away from the rear side (1241) of the filter housing (124) than the second movable hinge axis (1137). As another example, when the door (1300) is in an open state, the first movable hinge axis (1136) and the second movable hinge axis (1137) may be located at the same distance from the filter housing (124). Specifically, when the door (1300) is in an open state, the first movable hinge axis (1136) and the second movable hinge axis (1137) may be located at the same distance from the rear side (1241) of the filter housing (124).

[0370]

[0371] Here, the movable hinge shafts (1136, 1137) may be formed in the flip door bracket (1133). Since the flip door bracket (1133) opens and closes the suction part (120) of the door (1300) at a position lower than the upper surface of the top plate (23), it is preferable that the movable hinge shafts (1136, 1137) be formed in the flip door bracket (1133).

[0372] In this case, the movable hinge shaft (1136, 1137) is minimized from being exposed outside the suction part (120), so the deterioration of the appearance caused by the movable hinge shaft (1136, 1137) and the flip door bracket (1133) can be prevented.

[0373] Here, the flip door bracket (1133) may be formed to have a length that covers the entire rear portion of the intake portion (120). Specifically, the flip door bracket (1133) is connected to the door moving unit (1140) described later to perform the role of mediating the rotation of the flip cover (1130'), and also performs the role of guiding the flow of contaminated air introduced into the space corresponding to the door receiving space (104) toward the filter (123).

[0374] To this end, the flip door bracket (1133) may include a round surface (1133-2) in which the thickness gradually increases from the front end to the rear end in a two-dimensional curved shape when the flip cover (1130') is shielding the suction part (120), as referenced in FIGS. 25a to 25c.

[0375] According to another embodiment of the present disclosure, the door (1130) can perform the air curtain function of the air curtain section (111) itself without the air curtain section (111) coming out of the top plate (23). At this time, when contaminated air flows into the intake section (120) while the flip cover (1130') is open to 90 degrees, the flow of contaminated air guided toward the upper part of the flip cover (1130') is naturally guided from the door receiving space (104) to the side where the front filter (123) is placed by the round surface (1133-2) of the flip door bracket (1133).

[0376] A door (1300) according to another embodiment of the present disclosure may further include a door moving unit (1140) as referenced in FIGS. 23a to 25c. The door moving unit (1140) can rotate a flip cover (1130') via a flip door bracket (1133).

[0377] Specifically, the door moving unit (1140) includes a drive motor (1142), a drive link (1145), and an interlocking link (1146).

[0378] The drive motor (1142) performs the function of generating and providing a predetermined rotational force to the flip cover (1130') via an electrically driven motor shaft (1143). The drive motor (1142) may be fixed to one side of the suction part (120) (preferably one side of the filter housing (124)) and may have a left-right horizontal motor shaft (1143). One end of the drive link (1145) may be fixed to the motor shaft (1143) of the drive motor (1142).

[0379] At this time, one end of the drive link (1145) is not hinge-fixed, but can be locked so that the other end of the drive link (1145) rotates in conjunction with the rotation of the motor shaft (1143) to form a circular trajectory. To this end, the end of the motor shaft (1143) can be formed to have a non-circular cross-section (1143-1), and a fixing hole (1145-1) corresponding to the end of the motor shaft (1143) with the non-circular cross-section (1143-1) can be formed in the end of the drive link (1145).

[0380] One end of the drive link (1145) may be fixed to the motor shaft (1142) of the drive motor (1142) and the other end may be hinged to the flip door bracket (1133). The other end of the drive link (1145) may be hinged to the first movable hinge shaft (1136) among the movable hinge shafts (1136, 1137) formed in the flip door bracket (1133).

[0381] One end of the interlocking link (1146) may be hinged to a fixed axis (1144) of the suction part (120) (preferably a filter housing (124)), and the other end may be hinged to a flip door bracket (1133). The other end of the interlocking link (1146) may be hinged to a second movable hinge axis (1137) among the movable hinge axes (1136, 1137) formed in the flip door bracket (1133).

[0382] The drive link (1145) provides rotational force generated by the drive motor (1142) to the flip door bracket (1133), thereby causing the flip door bracket (1133) to rotate around the first fluid hinge axis (1136) that flows within the door receiving space (104) in the suction part (120).

[0383] The linkage link (1146) performs the role of guiding the rotation of the flip door bracket (1133) when the flip door bracket (1133) begins to rotate by the drive link (1145), and performs the role of changing the position of the first movable hinge axis (1136) within the door receiving space (104) in conjunction with the rotation of the flip door bracket (1133).

[0384] The motor shaft (1143) which is the rotational center of the drive link (1145) may be located behind the fixed shaft (1144) which is the rotational center of the linkage link (1146) when the flip cover (1130') is shielding the suction part (120).

[0385] The other end of the drive link (1145) can be rotated at a predetermined angle around a first circular trajectory centered on the motor shaft (1143), and the other end of the linkage link (1146) can be rotated at a predetermined angle around a second circular trajectory centered on the fixed shaft (1144).

[0386] Additionally, the length between the fixed axis (1144) of the linkage link (1146) and the second movable hinge axis (1137) may be formed to be longer than the length between the motor axis (1143) of the drive link (1145) and the first movable hinge axis (1136).

[0387] Furthermore, the first movable hinge axis (1136) within the flip door bracket (1133) may be positioned closer to one end of the flip cover (1130') in the longitudinal direction than the second movable hinge axis (1137). More specifically, the first movable hinge axis (1136) may be positioned in the flip door bracket (1133) with the suction part (120) shielded by the flip cover (1130'), and may be positioned relatively further rear than the second movable hinge axis (1137).

[0388] At this time, the driving link (1145) and the linking link (1146) are each rotated in an arc direction of a different trajectory, and as the length of the linking link (1146) is formed to be longer, when the driving link (1145) is rotated by the motor shaft (1143), the linking link (1146) rotates the flip door bracket (1133) while pushing it upward with respect to the first movable hinge shaft (1136).

[0389] Here, as the flip door bracket (1133) begins to rotate with respect to the first movable hinge axis (1137), the first movable hinge axis (1137) of the flip door bracket (1133) rotates along the second circular trajectory within the door receiving space (104) and moves along the first circular trajectory with respect to the second movable hinge axis (1137), which is the hinge joint part of the interlocking link (1146) that moves.

[0390] Accordingly, even when the door receiving space (104) is provided relatively narrowly in correspondence with the volume occupied by the flip door bracket (1133), the opening and closing rotational operation of the flip cover (1130') can be smoothly implemented through the change in flow within the range of the door receiving space (104) of the first movable hinge axis (1137) and the second movable hinge axis (1137) while preventing interference with the surrounding components of the flip door bracket (1133).

[0391] However, as referenced in FIG. 25a and FIG. 25b, the first fluid hinge axis (1136) and the second fluid hinge axis (1137) formed in the flip door bracket (1133) can be designed so that the fluid trajectories do not overlap or interfere with each other within the door receiving space (104) until the flip cover (1130') shields the suction part (120) (see FIG. 25a) or the flip cover (1130') opens the door (130') to 45 degrees.

[0392] However, as referenced in FIG. 25c, it is preferable that the flow trajectories of the first flow hinge axis (1136) and the second flow hinge axis (1137) be designed to overlap or interfere with each other when the flip cover (1130') opens the door (130') to 90 degrees. This is because the opening angle of the door (130') according to another embodiment of the present disclosure can be limited by ensuring that the overlap and interference occur at the opening angle of the door (130') to 90 degrees.

[0393] In this case, an interference groove (1147) may be machined and formed in the interlocking link (1146) at a position where it overlaps and interferes with the first fluid hinge shaft (1136) to which the other end of the driving link (1145) is connected. Preferably, the interference groove (1147) may be formed to interfere with the first fluid hinge shaft (1136) at a position where the flip cover (1130') is opened 90 degrees with respect to the suction part (120).

[0394] However, since the first movable hinge shaft (1136) must be inserted into the interference groove (1147) of the interlocking link (1146), it is preferable that the driving link (1145) be connected to the motor shaft (1143) and the flip door bracket (1133), and be provided as a pair such that a number of interlocking links (1146) are positioned between them. That is, one end of the driving link (1145) may be fixed at two locations on the motor shaft (1143) at a distance from each other, and the other end of the driving link (1145) may be hinge-coupled to two locations on the flip door bracket (1133) that form the first movable hinge shaft (1136).

[0395] Here, in another embodiment of the present disclosure, the door (130)' according to the present disclosure may have the flip door bracket (1133), motor shaft (1143), fixed shaft (1144), first movable hinge shaft (1136), and second movable hinge shaft (1137) all positioned below the lower surface of the flip cover (1130') when the flip cover (1130') covers the suction part (120) so that the deterioration of the appearance caused by the external exposure of the door moving unit (1140) can be minimized.

[0396] Meanwhile, the door moving unit (1140) may be provided in a filter housing (124) provided at either the left end or the right end of the suction part (120). However, in order to prevent the risk of twisting occurring when the door moving unit (1140) is provided only at either the left end or the right end of the suction part (120) and a uniform rotational force is not provided to the flip cover (1130') formed long in the left and right directions, the door moving unit (1140) may be provided in the filter housings (124) at the left end and the right end of the suction part (120), respectively.

[0397] In another embodiment of the present disclosure, the door (1130) configured in this manner allows for easy opening and closing of the suction portion (120) of the flip cover (1130') by the door moving unit (1140) within the door receiving space (104) provided as a narrow space.

[0398]

[0399] FIG. 26 is a cross-sectional view of a door (130') according to another embodiment of the present disclosure.

[0400] FIG. 26 is a cross-sectional view of the door (130') cut along a plane perpendicular to the longitudinal direction of the door (130'). Referring to FIG. 26, the cooking appliance according to another embodiment of the present disclosure (third embodiment) has a difference in the shape of the door (130') compared to the embodiment of FIG. 2 (first embodiment). Hereinafter, the differences between the first embodiment and the third embodiment will be described primarily, and configurations without special description will be considered identical to the first embodiment. Here, the door (130') is considered identical to the second plate referenced by reference numeral 131 in FIG. 2 and FIG. 16, and is described as identical to the flip cover referenced by reference numeral 1130' in FIG. 21a.

[0401] In a cross-section cut along a plane perpendicular to the longitudinal direction of the door (130'), the second plate (131) and / or the flip cover (1130'), the thickness of the door (130'), the second plate (131) and / or the flip cover (1130') may have a vertical cross-sectional shape that becomes thicker from one end to the other and then thins again. The thickness of the center of the door (130'), the second plate (131) and / or the flip cover (1130') may be thicker than the thickness of both ends.

[0402] The thickest part of the door (130'), the second plate (131) and / or the flip cover (1130') may be located at the center of the door (130'), the second plate (131) and / or the flip cover (1130'). Alternatively, the thickest part of the door (130'), the second plate (131) and / or the flip cover (1130') may be located between the center of the door (130'), the second plate (131) and / or the flip cover (1130') and its free end.

[0403] In particular, in the case where the door (130') has a structure in which two plates meet, such as the door (130) of FIG. 16, and one side of the entire door (130') has a convex shape, it is difficult to fold, so the first plate (133) may have a cross-section with a constant thickness, and only the second plate (131) may have a cross-section with varying thickness.

[0404] Specifically, in the cross-section cut along the plane perpendicular to the axis of rotation of the second plate (131) of the door (130) of FIG. 16, the thickness of the second plate (131) can become thicker from one end to the other and then thin again.

[0405] The thickest part of the second plate (131) may be located at the center (C) of the first plate (133). The thickness (T2) of both ends of the second plate (131) is smaller than the thickness (T1) of the center (C) of the second plate (131).

[0406] The second plate (131) may include a flat cover surface (1312) and an inner surface (1311) having a curvature positioned to face the cover surface (1312). In the open state of the door (130'), the inner surface (1311) is positioned closer to the suction space (120-1) than the cover surface (1312).

[0407] In the closed state of the door (130'), the inner surface (1311) may be positioned below the cover surface (1312).

[0408] In addition, when the door (130') has a structure in which two plates meet, such as the flip cover (1130') of FIG. 21a, when the suction part (120) is in an open state, the outer plate (1132) of the flip cover (1130') forms a flat rear surface, and the inner plate (1131) of the flip cover (1130') may have the vertical cross-sectional shape described above.

[0409] At this time, the outer plate (1132) may be a flat plate made of glass material, and the inner plate (1131) may be a panel made of plastic resin material that can be molded to have the vertical cross-sectional shape described above. This is because it is more advantageous to implement the vertical cross-sectional shape described above using a plastic resin material by a molding method than to implement it by processing a glass material.

[0410]

[0411] FIG. 27 is a cross-sectional view of a door (130'') according to another embodiment of the present disclosure.

[0412] FIG. 27 is a cross-sectional view of the door (130'') taken along a plane perpendicular to the longitudinal direction of the door (130''). Referring to FIG. 27, the cooking appliance according to another embodiment of the present disclosure (the fourth embodiment) has a difference in the shape of the door (130'') compared to the embodiment of FIG. 26 (the third embodiment). Hereinafter, the differences between the third embodiment and the fourth embodiment will be described mainly, and configurations without special description will be considered identical to the first embodiment.

[0413] The thickest part (1313) of the second plate (131) may be located between the center (C) of the first plate (133) and the free end of the second plate (131). The thickness (T2) of both ends of the second plate (131) is smaller than the thickness (T3) of the part (1313) between the center (C) and the free end of the second plate (131).

[0414]

[0415] Figure 28 is a flow analysis of contaminants to determine the suction performance of contaminants according to Example 1.

[0416] Referring to FIG. 28, contaminants generated in the cooking appliance are moved upward by convection, and some of the contaminants are guided by the door (130) and sucked into the suction part (120).

[0417]

[0418] FIG. 29 is a flow analysis of contaminant particles to determine the suction performance of contaminant particles according to one embodiment (third embodiment) of the present disclosure.

[0419] Referring to FIG. 29, if the center of the door (130) has the thickest thickness, contaminants generated from the cooking appliance are moved upward by convection, and most of the contaminants are guided by the door (130) and sucked into the suction part (120).

[0420]

[0421] FIG. 30 is a flow analysis of contaminant particles to determine the suction performance of contaminant particles according to one embodiment (fourth embodiment) of the present disclosure.

[0422] Referring to FIG. 30, if the distance between the center and the free end of the door (130) is the thickest, contaminants generated in the cooking appliance are moved upward by convection, and all of the contaminants are guided by the door (130) and sucked into the suction part (120).

[0423] Ultimately, the suction performance is improved by this shape of the door (130).

[0424]

[0425] 1: Cooking appliance 10: Exhaust system

[0426] 20: Heating device 11: Main body

[0427] 111: Air Curtain Section 112: 1st Post

[0428] 113: 2nd Post 1130: Door

[0429] 1130': Flip cover 1131: Inner plate

[0430] 1132: Outer plate 1133: Flip door bracket

[0431] 1134: 1st Magnet 1135: 2nd Magnet

[0432] 1136: 1st movable hinge axis 1137: 2nd movable hinge axis

[0433] 1138: 1st Magnet Connector 1139: 2nd Magnet Connector

[0434] 1140: Door moving unit 1143: Drive motor

[0435] 1143: Motor shaft 1144: Fixed shaft

[0436] 1145: Driving Link 1146: Linking Link

[0437] 1147: Interference groove

Claims

1. A top plate having at least one cooking zone and a suction part for sucking in contaminant particles generated in the cooking zone; and It includes a door for opening and closing the above suction part, The above door is, It includes a first movable hinge axis that rotates around a first point below the top plate when the door rotates, and a second movable hinge axis that rotates around a second point below the top plate when the door rotates. An exhaust device in which, when the above door is opened, the height of the first movable hinge shaft increases and then decreases, and the height of the second movable hinge shaft increases.

2. In Paragraph 1, When the above door rotates, the first movable hinge shaft and the second movable hinge shaft are an exhaust device that moves below the top plate.

3. In Paragraph 1, An exhaust device in which, when the door is in an open state, at least a portion of the first movable hinge axis overlaps with the second movable hinge axis in a vertical direction.

4. In Paragraph 1, An exhaust device in which, when the door is in a closed state, at least a portion of the first movable hinge axis overlaps with the second movable hinge axis in a horizontal direction.

5. In Paragraph 1, The first movable hinge axis and the second movable hinge axis are an exhaust device that moves above the first point and the second point.

6. In Paragraph 1, An exhaust device in which the distance between the first fluid hinge axis and the second fluid hinge axis is smaller than the distance between the first point and the second point.

7. In Paragraph 1, The above door is, A flip cover formed to correspond to the above suction part; and A flip door bracket mediating a connection to the suction side of the flip cover; comprising, The first and second movable hinge shafts are exhaust devices formed in the flip door bracket.

8. In Paragraph 1, An exhaust device further comprising a door moving unit that rotates the flip cover via the flip door bracket.

9. In Paragraph 8, The above door moving unit is, Drive motor; A drive link having one end fixed to the motor shaft of the drive motor and the other end hinge-coupled to the first movable hinge shaft; and An exhaust device comprising an interlocking link, wherein one end is hinge-coupled to a fixed shaft of the suction part and the other end is hinge-coupled to a second movable hinge shaft.

10. In Paragraph 9, The motor shaft is an exhaust device located behind the fixed shaft.

11. In Paragraph 9, The first movable hinge shaft is an exhaust device provided on the flip door bracket at a position closer to one end of the flip cover in the longitudinal direction than the second movable hinge shaft.

12. In Paragraph 9, The above link is, An exhaust device including an interference groove at a position where overlap and interference occur with the first fluid hinge shaft to which the other end of the above-mentioned drive link is connected.

13. In Paragraph 12, The above interference groove is an exhaust device that interferes with the first movable hinge shaft at a position where the door is opened 90 degrees with respect to the suction part.

14. In Paragraph 1, The above door is, A flip cover formed to correspond to the above suction part; and A flip door bracket mediating a connection to the suction side of the flip cover; comprising, The first and second movable hinge axes are formed in the flip door bracket, and The above flip door bracket, the motor shaft, the fixed shaft, the first movable hinge shaft, and the second movable hinge shaft are all exhaust devices located at least below the lower surface of the flip cover when the flip cover shields the intake portion.

15. In Paragraph 9, The filter installed in the above-mentioned suction part for filtering contaminant particles, and the filter housing for accommodating the filter are further included. The above door moving unit is an exhaust device provided in the filter housing at either the left end or the right end of the above intake part.

16. In Paragraph 1, The filter installed in the above-mentioned suction part for filtering contaminant particles, and the filter housing for accommodating the filter are further included. An exhaust device in which, when the above door is opened, the first movable hinge shaft and the second movable hinge shaft approach one surface of the filter housing.

17. In Paragraph 1, The filter installed in the above-mentioned suction part for filtering contaminant particles, and the filter housing for accommodating the filter are further included. When the above door is closed, the first movable hinge shaft and the second movable hinge shaft are an exhaust device that moves away from one side of the filter housing.

18. In Paragraph 9, The above flip cover further includes a first magnet, and The above flip door bracket is an exhaust device further comprising a second magnet that is magnetically coupled to the first magnet.

19. In Paragraph 18, The above flip cover is, An inner plate having a rear end magnetically coupled to the above-mentioned flip door bracket; and An exhaust device comprising an outer plate coupled to the inner plate, wherein the first magnet is positioned between the inner plate and the first magnet.

20. A top plate comprising at least one cooking area and a suction part for sucking in contaminant particles generated in the cooking area; A door that opens and closes the above-mentioned suction part and includes a first movable hinge shaft and a second movable hinge shaft; Drive motor; A drive link having one end fixed to the motor shaft of the drive motor and the other end hinge-coupled to the first movable hinge shaft; and It includes an interlocking link, one end of which is hinge-coupled to a fixed shaft inside the suction part, and the other end of which is hinge-coupled to the second movable hinge shaft. An exhaust device in which, when the above door is opened, the height of the first movable hinge shaft increases and then decreases, and the height of the second movable hinge shaft increases.

Images