Exhaust device and cooking appliance having same

Abstract

An exhaust device and a cooking appliance having same according to one embodiment of the present disclosure comprise: a top plate comprising at least one cooking area and a suction part for suctioning contaminated particles generated in the cooking area; an air curtain part for discharging air toward the suction part; and a main body for moving the air curtain part with respect to the top plate.

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 heated by the high heat of 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 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 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, as the installation height of a range hood is lowered, its pollutant capture efficiency may improve, but to that extent

[0015] There are more restrictions on the types of cookware that can be placed on the heating appliance. In other words, as the installation height of the range hood decreases, only cookware of a lower height becomes usable.

[0016] 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.

[0017] Recently, the use of downdraft hoods is gradually expanding instead of ceiling-mounted range hoods due to space utilization and design considerations.

[0018] 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.

[0019] Prior art document 1 (European published patent No. 3553388) discloses an example of a downdraft hood.

[0020] 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).

[0021] The downdraft extractor (21) may include a hood body (213), and an intake port (212) may be formed on the front of the hood body (213).

[0022] 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.

[0023] And the intake port (212) can be formed to penetrate in the front of the hood body (213) in the front-rear direction. Contaminants generated from a cooking appliance placed on the hob (22) can be sucked into the interior of the hood body (213) through the intake port (212) positioned at the rear of the cooking appliance. Inside the hood body (213), contaminants can be sucked downward.

[0024] 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).

[0025] 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.

[0026] 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).

[0027] In Prior Art 1, the intake port (212) is positioned at the front lower part of the hood body (213). When the intake port (212) is positioned at the lower side of the hood body (213) in this manner, a problem arises in that as the height of the cooking appliance increases—that is, as the point where the contaminant is generated increases—the distance between the point where the contaminant is sucked and the point where the contaminant is generated becomes greater.

[0028] 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.

[0029] Additionally, when the intake port (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 intake port (212).

[0030] 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.

[0031] 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 by forming an intake port in the wall to suck up contaminants stagnant around the intake port.

[0032] 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.

[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 with an improved structure that can suppress external contamination caused by contaminated air, and a cooking appliance equipped with the same.

[0040] 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.

[0041] 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 device equipped with the same.

[0042] 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.

[0043] To achieve the above objective, an exhaust device according to one embodiment of the present disclosure and a cooking device equipped with the same are characterized by an air curtain section that forms an air curtain discharged toward the intake port of a top plate.

[0044] Specifically, an exhaust device and a cooking device equipped with the same according to one embodiment of the present disclosure are characterized by comprising at least one cooking area, a top plate including a suction part for sucking in contaminant particles generated in the cooking area, an air curtain part for discharging air toward the suction part, and a main body for moving the air curtain part relative to the top plate.

[0045] The air curtain section may be positioned to overlap in a direction that intersects the extension direction of the suction section and the top plate.

[0046] Additionally, the present disclosure further includes a supply fan that supplies air to the air curtain section, and the main body may further include a supply air passage connecting the air curtain section and the supply fan.

[0047] The main body may include a first post connected to one end of the air curtain section and installed to slide in a first direction intersecting the extension direction of the top plate on the top plate, and a second post connected to the other end of the air curtain section and installed to slide in the first direction on the top plate.

[0048] The above air supply channel may be formed inside at least one of the first post and the second post.

[0049] The air curtain section may include an air body comprising a curtain passage communicating with the air supply passage, a discharge section for discharging air from the curtain passage to the outside of the air body, and an air guide for changing the direction of the air discharged from the discharge section.

[0050] The above suction part is extended in the second direction, and the gas discharge part can be extended in the second direction.

[0051] The length of the discharge portion may be equal to or greater than the length of the suction portion.

[0052] The air guide above includes a first curved surface having the first curvature and a second curved surface having a second curvature greater than the first curvature, and the discharge portion can allow the discharged air to flow while in contact with the first curved surface.

[0053] The tangential direction of one end of the second curved surface may be directed toward the suction part.

[0054] The discharge portion can be defined as the space between the air body and one end of the air guide.

[0055] The width of the above curtain channel may decrease as it moves further away from the first post and the second post.

[0056] The above air curtain section includes a first air curtain section and a second air curtain section, and the heights of the first air curtain section and the second air curtain section can be adjusted separately.

[0057] The main body may include a first post connected to the first air curtain section and installed to slide in a first direction intersecting the extension direction of the top plate, and a second post connected to the second air curtain section and installed to slide in the first direction on the top plate.

[0058] The above suction part may include a plurality of suction fans connected to the plurality of suction parts, with a plurality of suction parts formed spaced apart from each other on the top plate.

[0059] The air curtain section can expose the suction section on the top plate in an open state and cover the suction section on the top plate in a closed state.

[0060] Additionally, the present disclosure may further include a flip door for opening and closing the suction portion.

[0061] In the open state, the flip door can define a surface that intersects the extension direction of the top plate and extends in the extension direction of the suction part.

[0062] Additionally, the present disclosure may further include a height measuring unit for measuring the height of a cooking appliance placed in the cooking area and a control unit for adjusting the height of the air curtain unit according to the height of the cooking appliance.

[0063] In addition, 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,

[0064] It is characterized by including an air curtain section spaced apart from the top plate and discharging air toward the suction section, and a main body spaced apart from the top plate and the air curtain section.

[0065]

[0066] Specific details of other embodiments are included in the detailed description and drawings.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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 port is in an open state, thereby guiding some of the contaminants that escape from the vicinity of the intake port to the rear of the intake port to the intake port when contaminants are guided by the curtain-shaped air discharged from the air curtain section.

[0072] 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.

[0073] 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.

[0074] FIG. 1 is a perspective view showing a cooking device according to one embodiment of the present invention installed on a main body.

[0075] FIG. 2 is a perspective view of the exhaust device shown in FIG. 1 and a cooking device equipped with the same.

[0076] FIG. 3 is a cross-sectional view taken along line 3-3 in which the main body of FIG. 2 is omitted.

[0077] Figure 4 is a plan view of the state in which the top plate and heating device in Figure 3 have been removed.

[0078] FIG. 5 is a perspective view illustrating the main body shown in FIG. 2 and the moving device that moves the main body.

[0079] Figure 6 is a drawing showing the main body moved downward in Figure 5.

[0080] FIG. 7 is an exploded perspective view showing the main body and moving device in FIG. 5.

[0081] Figure 8 is a cross-sectional view taken along line 8-8 of Figure 2.

[0082] Figure 9 is a cross-sectional view of the air curtain section of Figure 2 cut along the horizontal plane.

[0083] Figure 10 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 1.

[0084] Figure 11 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 2.

[0085] FIG. 12 is a flow analysis of contaminants to determine the suction performance of contaminants according to one embodiment of the present disclosure.

[0086] FIG. 13 is a perspective view of a cooking appliance according to another embodiment of the present disclosure.

[0087] 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.

[0088] 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.

[0089] FIG. 16 is a cross-sectional view of an air guide according to another embodiment of the present disclosure.

[0090] FIG. 17 is a cross-sectional view of an air guide according to another embodiment of the present disclosure.

[0091] FIG. 18 is a cross-sectional view of an air guide according to another embodiment of the present disclosure.

[0092]

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104]

[0105] 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.

[0106] 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).

[0107] 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.

[0108] As an example, the heating device (20) may include a case (101) and a top plate (23).

[0109] 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.

[0110] 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.

[0111] 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).

[0112] The top plate (23) can be made of ceramic glass and can be formed into a rectangular flat plate shape with thickness.

[0113] 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).

[0114] 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.

[0115] 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.

[0116] 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.

[0117] The input interface (24) receives touch input from the user, and the heating device (20) can be driven based on the received touch input.

[0118] A heating device (20) may be installed in a main body (10). The main body (10) 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 (10).

[0119] For example, the main body (10) 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 (10) provided in the form of kitchen furniture. A heating device (20) and an exhaust device (10) may be installed on the countertop (11).

[0120] 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).

[0121] As another example, the main body (10) 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 (10) may be positioned above the cooking chamber of the oven.

[0122] 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).

[0123] 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).

[0124] 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 to the inside or outside of the main body (10) through the inside of the exhaust device (10).

[0125] A part of the exhaust device (10) may be installed so as to protrude from the main body (10). A part of the exhaust device (10) may be installed in the main body (10) so as to protrude above the cooking table (11) or be received inside the main body (10).

[0126] 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).

[0127] The exhaust device (10) is configured to collect contaminated air generated around the exhaust device (10) and can be configured to be vertically movable.

[0128] A portion of this exhaust device (10) may collect contaminated air while protruding above the countertop (11) or case (101). Additionally, the exhaust device (10) may descend toward the interior of the main body (10) and be inserted into the interior of the main body (10) or case (101).

[0129]

[0130] The structure of the exhaust device (10) is described below.

[0131] 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.

[0132] 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).

[0133] As described above, the top plate (23) includes at least one cooking area and a suction part (120) for sucking up contaminant particles generated in the cooking area. The top plate (23) can be defined as the upper surface of the case (101).

[0134] The intake unit (120) may be positioned at the rear of the cooking area. 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. When 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, 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.

[0135] 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 (a direction parallel to the upper surface of the top plate (23)). Specifically, the suction portion (120) may extend in the left-right direction and have a predetermined width in the front-rear direction.

[0136] Additionally, one or more suction parts (120) may be formed. Preferably, considering that multiple cooking utensils are cooked in multiple cooking areas, 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.

[0137] 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.

[0138] 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.

[0139] 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).

[0140] 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 (140) may be arranged. In order to individually suck in contaminated air through multiple suction units (120), the number of suction fans (140) may correspond to the number of suction units (120).

[0141] Specifically, the suction fan (140) may include a first suction fan (141) and a second suction fan (142) disposed 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.

[0142] 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).

[0143] 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.

[0144] 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.

[0145] 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.

[0146] The filter (123) may be installed in the exhaust passage (102, 103) adjacent to the intake port. 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).

[0147] 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.

[0148] 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).

[0149] 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).

[0150]

[0151] Additionally, in one embodiment of the present disclosure, a flip door (131) for opening and closing the suction part (120) may be further included. Of course, depending on the embodiment, the flip door (131) may be omitted.

[0152] The flip door (131) closes or opens the intake section (120) to cover the intake section (120) from the outside when the exhaust device is not in use, and prevents foreign substances such as dust from entering through the intake section (120).

[0153] The flip door (131) can be rotatably coupled to a position adjacent to the suction part (120) in the case (101). Specifically, the flip door (131) is rotatably coupled to a top plate (23) at the rear of the suction part (120). The case (101) may form a door receiving space (104) in which one end of the flip door (131) is received when the flip door (131) is rotated.

[0154] The flip door (131) may be extended in a direction parallel to the suction section (120). The length of the flip door (131) 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 flip door (131) 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).

[0155] The flip door (131) can be driven by a door drive unit. The door drive unit may include a door motor and a door drive unit (132) that moves the door using the rotational force of the door motor.

[0156] Since the flip door (131) is extended in the left and right directions, if the door drive unit (132) is installed only on one end of the left and right direction of the flip door (131), bending may occur in the flip door (131) during rotation of the door. Therefore, the door drive unit (132) may be positioned on the left and right sides of the flip door (131). The door motor (135) may include a first door motor (135a) positioned on the right side inside the case (101) and a second door motor (135b) positioned on the left side inside the case (101).

[0157] In the open state, the flip door (131) 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 flip door (131) means a state in which the flip door (131) exposes the suction part (120) to the outside.

[0158] In the open state, the flip door (131) can define a surface that intersects the front-rear and left-right directions and extends in the left-right direction. More preferably, in the open state, the flip door (131) can define a surface that is orthogonal to the top plate (23).

[0159] In the open state of the flip door (131), the height of the top of the flip door (131) is located below the air curtain section (111).

[0160]

[0161] Below, the air curtain section (111) and the main body (112, 113) will be described.

[0162] 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.

[0163] 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).

[0164] 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.

[0165] Specifically, the main body (112, 113) is installed to slide in a first direction (a direction intersecting or perpendicular to the upper surface of the top plate (23)) that intersects 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.

[0166] The air supply fan (119) 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).

[0167] Specifically, the supply fan (119) 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).

[0168] When installed at the bottom of the first post (112) and the second post (113) of the air supply fan (119), an air supply passage may be formed inside at least one of the first post (112) and the second post (113). The air supply passage may include a first air supply passage (118a) formed inside the first post (112) and connected to one end of the air curtain, and a second air supply 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.

[0169] 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.

[0170]

[0171] 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).

[0172] 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 upward in the center to define a space where a height adjustment motor (115) is placed.

[0173] 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.

[0174] The first mounting space (117b) and the second mounting space (117c) may be areas where the slide body (117) is recessed to the rear. A first suction part (120a) may be located in the first mounting space (117b), and a second suction port may be located in the second mounting space (117c).

[0175] 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).

[0176] The rack gear (191) is coupled to the slide body (117). Specifically, the rack gear (191) can be received in the receiving groove (117a).

[0177] 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).

[0178] 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).

[0179] 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.

[0180] 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.

[0181] 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).

[0182] The air curtain section (111) can be positioned in front of the flip door (131) when the flip door (131) is in an open state.

[0183] 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.

[0184]

[0185] Below, a structure in which an air curtain unit (111) discharges curtain-shaped air is described.

[0186] 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.

[0187] 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).

[0188] Specifically, the air curtain section (111) includes an air body (211), a discharge section (215), and an air guide (210).

[0189] 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.

[0190] Accordingly, if the width of the curtain channel (213) decreases as it moves away from the first post (112) and the second post (113), it is possible to prevent the flow rate and pressure of the air discharged from the discharge section (215) located far from the first post (112) and the second post (113) from decreasing.

[0191] The air body (211) has a shape corresponding to the intake portion (120) and can cover the intake portion (120). The cross-sectional shape of the air body (211) has a shape that widens from the bottom to the top, and the cross-sectional shape of the edge of the intake portion (120) can have a shape that narrows from the top to the bottom.

[0192] 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).

[0193] The first curtain channel (213a) and the second curtain channel (213b) may or may not be connected to each other.

[0194] 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).

[0195] 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).

[0196] 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).

[0197] 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).

[0198] 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).

[0199] 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).

[0200] 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).

[0201] The discharge portion (215) is defined as the gap between one end of the air body (211) and one end of the air guide (210). Specifically, the discharge portion (215) can 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).

[0202] 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).

[0203] 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).

[0204] 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).

[0205] 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.

[0206] 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).

[0207] For example, the air guide (210) may include a curved surface having multiple curvatures. The air guide (210) may be formed by the contact of at least two curves having different radii. 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).

[0208] If 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), the air is not separated and flows along the curved surface to the end, thereby maximizing the reach of the air curtain.

[0209]

[0210] 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).

[0211] 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).

[0212] The tangential direction of the rear end of the second curved surface (217) is directed toward the rear end of the suction part (120), or the tangential direction of the rear end (217a) of the second curved surface (217) is parallel to the vertical direction to form a trapping vector to maximize the capture efficiency.

[0213]

[0214] 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.

[0215] 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).

[0216] 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).

[0217] In this case, the air curtain section (111) exposes the suction section (120) on the top plate (23) in the open state and covers the suction section (120) on the top plate (23) in the closed state. If a flip door (131) is present, the air curtain section (111) covers the flip door (131) that covers the suction section (120) in the closed state.

[0218]

[0219] Figure 10 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 1.

[0220] 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.

[0221]

[0222] Figure 11 is a flow analysis of contaminants to determine the suction performance of contaminants according to Comparative Example 2.

[0223] Referring to FIG. 11, Comparative Example 2 has 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.

[0224] 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.

[0225]

[0226] FIG. 12 is a flow analysis of contaminants to determine the suction performance of contaminants according to one embodiment of the present disclosure.

[0227] 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.

[0228]

[0229] 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.

[0230] 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.

[0231] 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).

[0232] 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).

[0233] 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.

[0234]

[0235] 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.

[0236] 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).

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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.

[0241] The control unit (310) analyzes the image obtained from the height measuring unit 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 motor, and adjusts the height of the air curtain unit (111).

[0242]

[0243] FIG. 16 is a cross-sectional view of an air guide according to another embodiment of the present disclosure.

[0244] The embodiment of FIG. 16 differs from the embodiment of FIG. 8 in that the air guide further includes a plurality of micro dimples (2101). Hereinafter, the differences from FIG. 8 will be described, and structures without special description will be considered identical to FIG. 8.

[0245] Micro dimples (2101) are placed on the curved surfaces (216, 217) of the air guide (210). Micro dimples (2101) are formed by indenting a portion of the curved surfaces (216, 217) of the air guide (210). Micro dimples (2101) generate turbulence, causing the air to stick to the surface and move further away without falling off (detachment delay effect), thereby enhancing the effect of the air curtain.

[0246]

[0247] FIG. 17 is a cross-sectional view of an air guide according to another embodiment of the present disclosure.

[0248] The embodiment of FIG. 17 differs from the embodiment of FIG. 8 in that the air guide further includes a plurality of micro-protrusions (2102). Hereinafter, the differences from FIG. 8 will be described, and structures without special description will be considered identical to FIG. 8.

[0249] Micro-protrusions (2102) are placed on the curved surfaces (216, 217) of the air guide (210). Micro-protrusions (2102) are formed by protruding a portion of the curved surfaces (216, 217) of the air guide (210). Micro-protrusions (2102) generate turbulence, causing the air to stick to the surface and move further away without falling off (detachment delay effect), thereby enhancing the effect of the air curtain.

[0250]

[0251] FIG. 18 is a cross-sectional view of an air guide according to another embodiment of the present disclosure.

[0252] The embodiment of FIG. 18 differs from the embodiment of FIG. 8 in that it further includes a discharge angle adjustment unit (220) that adjusts the angle of air discharged from the air guide (210). Hereinafter, the differences from FIG. 8 will be described, and structures without special description will be considered identical to FIG. 8.

[0253] The discharge angle adjustment unit (220) may have a structure that adjusts the curvature or inclination angle of a part of the curved surface (216, 217) of the air guide (210).

[0254] For example, one end of the discharge angle adjustment part (220) may include a plate hinged to the rear end of the second curved surface (217).

[0255] The discharge angle adjustment unit (220) can adjust the angle manually or automatically.

[0256] Air introduced from the rear end of the second curved surface (217) is guided along the inner surface of the discharge angle adjustment part (220) and discharged along the angle of the discharge angle adjustment part (220).

[0257] The discharge angle adjustment unit (220) can finely adjust the discharge angle of the air discharged from the air guide (210), and can adjust the optimal angle according to the height of the cooking vessel, thereby maximizing the efficiency of collecting contaminants.

Claims

A top plate comprising at least one cooking zone and a suction part for sucking in contaminant particles generated in the cooking zone; An air curtain section that discharges air toward the above-mentioned intake section; and An exhaust device comprising a main body that moves the air curtain section relative to the top plate. In Article 1, The above air curtain section is, An exhaust device positioned to overlap in a direction intersecting the suction part and the upper surface of the top plate. In Article 1, It further includes a supply fan that supplies air to the air curtain section, The above main body is, An exhaust device further comprising a supply air passage connecting the air curtain section and the supply air fan. In Paragraph 3, The above main body is, A first post installed to slide in a first direction intersecting the upper surface of the top plate and connected to one end of the air curtain part; and An exhaust device comprising a second post installed to slide in the first direction on the top plate and connected to the other end of the air curtain section. In Paragraph 4, The above air supply path is an exhaust device formed inside at least one of the first post and the second post. In Paragraph 3, The above air curtain section is, An air body including a curtain channel communicating with the above-mentioned supply channel; A discharge unit that discharges air from the above curtain channel to the outside of the air body; An exhaust device including an air guide that changes the direction of air discharged from the above discharge section. In Article 6, The above suction portion extends in a direction parallel to the upper surface of the top plate, and The above discharge section is an exhaust device extending in a direction parallel to the above intake section. In Article 7, An exhaust device in which the length of the discharge section is equal to or greater than the length of the intake section. In Article 6, The above air guide is, At least two curves having different radii are tangent to form, and The above discharge section is an exhaust device that allows the discharged air to flow in contact with any one of the above curves. In Article 9, The tangential direction of one end of the second curved surface is an exhaust device facing the intake portion. In Article 6, The above discharge unit is, An exhaust device defined by a gap between one end of the air body and one end of the air guide. In Article 6, An exhaust device in which the width of the curtain channel decreases as it moves away from the first post and the second post. In Article 1, The above air curtain section is, It includes a first air curtain section and the second air curtain section, The first air curtain section and the second air curtain section are exhaust devices with separately adjustable heights. In Article 13, The above main body is, A first post installed to slide in a first direction intersecting the extension direction of the top plate and connected to the first air curtain section; and An exhaust device comprising a second post installed to slide in the first direction on the top plate and connected to the second air curtain section. In Article 1, The above suction part is, A plurality of them are formed on the top plate spaced apart from each other, and An exhaust device comprising a plurality of suction fans connected to a plurality of suction parts. In paragraph 1, The above air curtain section is, In an open state, the suction part is exposed on the top plate, and An exhaust device that covers the suction part on the top plate in a closed state. In paragraph 1, An exhaust device further comprising a flip door for opening and closing the intake portion. In Paragraph 17, An exhaust device in which, when the flip door is in an open state, the surface intersects the extension direction of the top plate and extends in the extension direction of the suction part. In Article 1, A height measuring unit for measuring the height of a cooking utensil placed in the above cooking area; and An exhaust device further comprising a control unit that adjusts the height of the air curtain unit according to the height of the cooking appliance. A top plate comprising at least one cooking zone and a suction part for sucking in contaminant particles generated in the cooking zone; An air curtain section spaced apart from the top plate and discharging air toward the suction section; and An exhaust device comprising a main body that separates the top plate and the air curtain section.

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