Cooking apparatus

Abstract

A cooking apparatus, belonging to the field of household appliances. The cooking apparatus comprises a top heating assembly (20) and a body (10), wherein the top heating assembly (20) is arranged on the top of the body (10); an air outlet (20a) is provided on the surface of the cooking apparatus, and at least part of the air outlet (20a) is located on a first side wall (201) of the top heating assembly (20); and the orthographic projection of the top heating assembly (20) on a reference plane is located within the orthographic projection of the body (10) on the reference plane, the orthographic projection of the first side wall (201) on the reference plane is located on the inner side of the orthographic projection of a second side wall (101) of the body (10) on the reference plane, the reference plane is a plane perpendicular to the direction of height of the body (10), and the first side wall (201) and the second side wall (101) are located on the same side of the cooking apparatus. When the cooking apparatus is placed near a wall or a cabinet, at least part of the air outlet (20a) is arranged on the first side wall (201), such that there is a relatively large distance between the air outlet (20a) and the wall or the cabinet, thereby reducing the impact of the wall or the cabinet on the air exhausting effect of the air outlet (20a), facilitating air exhausting of the air outlet (20a) and promoting heat dissipation of the cooking apparatus.

Description

Cooking equipment

[0001] This application claims Chinese patent applications filed on June 28, 2024 (application number 202421524103.3, entitled "An Air Fryer"), September 9, 2024 (application number 202422207350.7, entitled "An Air Fryer"), September 9, 2024 (application number 202411261328.9, entitled "An Air Fryer"), and September 27, 2024 (application number 2). Priority to Chinese Patent Application No. 02422376934.7, entitled "A Handle for a Cooking Container, a Cooking Container and an Air Fryer"; Chinese Patent Application No. 202422394102.8, filed on September 29, 2024, entitled "Shell Assembly and Cooking Appliance"; and Chinese Patent Application No. 202421522448.5, filed on June 28, 2024, entitled "An Air Fryer", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of home appliances, and more particularly to a cooking device. Background Technology

[0003] There are many types of cooking appliances, among which one category uses hot air circulation and the food's own oils to fry food. This type of cooking equipment is favored by consumers for its green and healthy cooking concept. Common examples of this type of cooking equipment include air fryers and air ovens.

[0004] These types of cooking appliances typically consist of a burner assembly and a main body, with the burner assembly located on top of the main body. Air vents are located on the surface of the cooking appliance, and exhaust air outwards during operation.

[0005] Cooking equipment is usually placed near a wall or cabinet, with a small distance between the air outlet and the wall or cabinet. This obstructs the normal airflow from the air outlet during operation, thus affecting the heat dissipation of the cooking equipment. Summary of the Invention

[0006] This application provides a cooking device that facilitates normal airflow from the air outlet and promotes heat dissipation. The technical solution is as follows:

[0007] This application provides a cooking device, which includes a burner assembly and a body, the burner assembly being disposed on the top of the body; an air outlet is provided on the surface of the cooking device, at least a portion of the air outlet being located on a first sidewall of the burner assembly;

[0008] The orthographic projection of the burner assembly onto the reference plane is located within the orthographic projection of the body onto the reference plane, and the orthographic projection of the first sidewall onto the reference plane is located inside the orthographic projection of the second sidewall of the body onto the reference plane. The reference plane is a plane perpendicular to the height direction of the body, and the first sidewall and the second sidewall are located on the same side of the cooking device.

[0009] In some examples, the orthographic projection of each sidewall of the burner assembly onto the reference plane is located inside the orthographic projection of the fuselage onto the reference plane.

[0010] In some examples, the area of ​​the burner assembly projected onto the reference plane is 75% to 85% of the area of ​​the body projected onto the reference plane.

[0011] In some examples, the burner assembly includes a first metal housing, the body includes a second metal housing, and the first metal housing is connected to the second metal housing.

[0012] In some examples, the fuselage also includes a connecting cover, through which the first metal shell and the second metal shell are connected, the outer surface of which is a convex curved surface.

[0013] In some examples, a portion of the air outlet is located in the first metal housing, and another portion of the air outlet is located in the connecting cover.

[0014] In some examples, the cooking device also includes an air vent connected to the air outlet;

[0015] The air outlet hood includes a frame and multiple air guide vanes, with both ends of the air guide vanes connected to the frame.

[0016] In some examples, the air guide vane is set at an acute angle to the first sidewall.

[0017] In some examples, the plurality of air guide vanes are arranged at intervals along the height direction of the fuselage, and the length direction of the air guide vanes is perpendicular to the height direction of the fuselage.

[0018] In some examples, the second sidewall is connected to a partition wall member that protrudes from the second sidewall.

[0019] In some examples, the partition wall component is a length-adjustable rod.

[0020] In some examples, the housing also includes a burner head and a mounting bracket, the burner head protruding relative to the second metal housing, the burner head assembly covering the burner head; the mounting bracket is mounted on the burner head, the mounting bracket is arranged around the air inlet of the burner head, the edge of the mounting bracket is provided with a flow guide plate, the flow guide plate extends along the length direction of the burner head assembly, and there is a gap between the flow guide plate and the burner head assembly for airflow to pass through.

[0021] In some examples, the body also includes a cooking chamber and a base plate connected to the bottom of the second metal housing. The cooking chamber is located inside the second metal housing. The burner head is connected to the cooking chamber. The base plate has a first through hole. The gap between the cooking chamber and the base plate forms a first airflow channel. The gap between the cooking chamber and the second metal housing forms a second airflow channel. The first through hole, the first airflow channel, and the second airflow channel are connected in sequence. The second airflow channel is connected to the inside of the burner head assembly.

[0022] In some examples, the cooking chamber includes a support plate and side plates;

[0023] The support plate is arranged opposite to the base plate, and the edge of the support plate is connected to the second metal shell and the base plate respectively. The gap between the support plate and the base plate forms the first airflow channel.

[0024] The side plate is located on the side of the support plate away from the bottom plate, and the side plate is arranged opposite to the second metal shell. The gap between the side plate and the second metal shell forms the second airflow channel.

[0025] The support plate also has a plurality of second through holes, which are located on the outside of the side plate and connect the first airflow channel and the second airflow channel.

[0026] In some examples, the burner head includes a reflector and a fan cover, the reflector being arranged opposite to the support plate, the side plate being connected between the reflector and the support plate, and the edge of the support plate being connected to the second metal shell;

[0027] The fan cover is connected to the side of the reflector away from the side plate, and the gap between the fan cover and the burner assembly forms a third airflow channel;

[0028] The reflector also has a plurality of third through holes located on the outside of the side plate and the fan cover, connecting the second airflow channel and the third airflow channel.

[0029] The beneficial effects of the technical solutions provided in this application include at least the following:

[0030] By placing the burner assembly at the top of the appliance body, the burner assembly does not protrude outwards relative to the side wall of the appliance body because its orthographic projection onto a reference plane perpendicular to the height of the appliance body lies within the orthographic projection of the appliance body onto the reference plane. Furthermore, since the orthographic projection of the first side wall of the burner assembly onto the reference plane lies inside the orthographic projection of the second side wall of the appliance body onto the reference plane, and the first and second side walls are located on the same side of the cooking appliance, even when the cooking appliance is placed near a wall or cabinet, there is still a significant distance between the first side wall and the wall or cabinet. By placing at least a portion of the air outlet on the first side wall, creating a larger distance between the air outlet and the wall or cabinet, the influence of the wall or cabinet on the exhaust effect of the air outlet is reduced, which is beneficial for exhaust and promotes heat dissipation of the cooking appliance. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 is a schematic diagram of a cooking device;

[0033] Figure 2 is a structural schematic diagram of a cooking device;

[0034] Figure 3 is a structural schematic diagram of a cooking device provided in an embodiment of this application;

[0035] Figure 4 is a structural schematic diagram of a cooking device provided in an embodiment of this application;

[0036] Figure 5 is an exploded structural diagram of a cooking device provided in an embodiment of this application;

[0037] Figure 6 is a schematic diagram of the structure of a cooking device according to an embodiment of this application;

[0038] Figure 7 is a schematic diagram of the internal structure of a cooking device provided in an embodiment of this application;

[0039] Figure 8 is a partially enlarged schematic diagram of Figure 7;

[0040] Figure 9 is a structural schematic diagram of a fixed bracket provided in an embodiment of this application;

[0041] Figure 10 is an exploded structural diagram of a cooking chamber provided in an embodiment of this application;

[0042] Figure 11 is a structural schematic diagram of a support plate provided in an embodiment of this application;

[0043] Figure 12 is an exploded structural diagram of a stove head provided in an embodiment of this application;

[0044] Figure 13 is a schematic diagram of the structure of a reflector provided in an embodiment of this application.

[0045] Reference numerals: 1a-First airflow channel; 1b-Second airflow channel; 1c-Third airflow channel; 1d-Fourth airflow channel; 10-Body; 10a-Receiving slot; 101-Second side wall; 11-Second metal shell; 12-Stove head; 12a-Air inlet; 12b-Exhaust outlet; 121-Reflector; 121a-Third through hole; 122-Fan cover; 123-Heat pipe; 124-Fan; 125-Micro switch; 13-Cooking chamber; 131-Support plate; 1311-Guide rail; 131a-Second through hole; 132-Side plate; 14-Bottom plate; 14a-First through hole; 15-Connecting cover; 16-Fixed bracket; 161-Drain plate; 16a-Gap; 17-Circuit board bracket; 18-Circuit board; 20-Stove head assembly; 20a-Air outlet; 201-First side wall; 21-First metal shell; 22-Top cover; 23-Support cylinder; 30-Potware; 40-Air outlet cover; 41-Frame; 42-Air guide vane; 50-Partition; 51-Buffer pad. Detailed Implementation

[0046] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0047] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0048] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0049] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. "A plurality" means two or more.

[0052] Air fryers and air ovens are cooking devices that use hot air circulation and the food's own oils to fry food. These devices include a main body and cooking equipment, which is housed within the main body, which is used for heating. Figure 1 is a schematic diagram of the structure of this cooking device. As shown in Figure 1, the device includes a main body 10 and a burner assembly 20 connected to the top of the main body 10. The burner assembly 20 can shield the burner. A receiving slot 10a is provided on one side of the main body 10 for accommodating a removable pot 30.

[0053] Figure 2 is a structural schematic diagram of a cooking device, showing the other side of the cooking device in Figure 1. As shown in Figure 2, the surface of the cooking device is provided with an air outlet 20a. The surface where the air outlet 20a is located is flat, that is, on the side away from the cookware 30, the surface of the burner assembly 20 is flush with the surface of the body 10. To facilitate the placement and removal of the cookware 30, when the cooking device is placed near a wall or cabinet, the side with the air outlet 20a is usually facing the wall or cabinet. The small distance between the air outlet 20a and the wall or cabinet, or even its contact with the surface of the wall or cabinet, will obstruct the normal exhaust of the air outlet 20a, thus affecting the heat dissipation of the cooking device. The decrease in heat dissipation efficiency will not only affect the normal operation of the cooking device, but will also cause the surface temperature of the cooking device to become too high. In actual tests, the surface temperature of some cooking devices can reach above 85°C, posing a significant risk of burns.

[0054] In order to enable the air outlet to exhaust air normally and promote the heat dissipation of the cooking equipment, this application provides a cooking device.

[0055] Figure 3 is a structural schematic diagram of a cooking device provided in an embodiment of this application. The cooking device may be, but is not limited to, an air fryer or an air oven. As shown in Figure 3, the cooking device includes a burner assembly 20 and a body 10, with the burner assembly 20 disposed on the top of the body 10.

[0056] The orthographic projection of the burner assembly 20 onto the reference plane lies within the orthographic projection of the body 10 onto the reference plane. The reference plane is a plane perpendicular to the height direction of the body 10.

[0057] The reference plane can be any plane perpendicular to the height direction of the fuselage 10. For example, the reference plane can be the plane containing the top surface of the fuselage 10 or the plane containing the bottom surface of the fuselage 10.

[0058] The burner assembly 20 may have a first sidewall 201, and the body 10 may have a second sidewall 101, with the first sidewall 201 and the second sidewall 101 located on the same side of the cooking device.

[0059] As an example, the first sidewall 201 may be the sidewall of the burner assembly 20 away from the receiving tank 10a. The second sidewall 101 may be the sidewall of the body 10 away from the receiving tank 10a.

[0060] The orthographic projection of the first sidewall 201 onto the reference plane is located inside the orthographic projection of the second sidewall 101 of the fuselage 10 onto the reference plane. That is, the first sidewall 201 and the second sidewall 101 are not coplanar, and the first sidewall 201 is located on the side of the second sidewall 101 closer to the geometric center of the fuselage 10.

[0061] The inner side of the orthographic projection of the second sidewall 101 on the reference plane refers to the side of the orthographic projection of the second sidewall 101 on the reference plane that is close to the center of the set of orthographic projections of the fuselage 10 on the reference plane.

[0062] Figure 4 is a structural schematic diagram of a cooking device provided in an embodiment of this application. Figures 3 and 4 show different sides of the cooking device. As shown in Figure 4, an air outlet 20a is provided on the surface of the cooking device, and at least a portion of the air outlet 20a is located on the first sidewall 201 of the burner assembly 20.

[0063] By placing the burner assembly 20 on top of the body 10, the burner assembly 20 does not protrude outward relative to the side wall of the body 10 because its orthographic projection onto a reference plane perpendicular to the height direction of the body 10 lies within the orthographic projection of the body 10 onto the reference plane. Furthermore, since the orthographic projection of the first side wall 201 of the burner assembly 20 onto the reference plane lies inside the orthographic projection of the second side wall 101 of the body 10 onto the reference plane, and the first and second side walls 201 are located on the same side of the cooking appliance, a significant distance remains between the first side wall 201 and the wall or cabinet even when the second side wall 101 is adjacent to the wall or cabinet. By placing at least a portion of the air outlet 20a on the first side wall 201, a larger distance is maintained between the air outlet 20a and the wall or cabinet, reducing the impact of the wall or cabinet on the exhaust effect of the air outlet 20a, thus improving exhaust performance and promoting heat dissipation of the cooking appliance.

[0064] In some examples, the orthographic projection of each sidewall of the burner assembly 20 onto the reference plane is located inside the orthographic projection of the body 10 onto the reference plane.

[0065] The side wall of the burner assembly 20 is not flush with the side wall of the body 10. The side wall of the burner assembly 20 is recessed relative to the side wall of the body 10, making the surface of the cooking device stepped and making the structure of the burner assembly 20 more compact.

[0066] The receiving slot 10a of the body 10 needs to accommodate the cookware 30. The size of the cookware 30 affects the amount of food that can be held; the cookware 30 is usually set to be large, and correspondingly, the size of the body 10 is also large. If the side wall of the burner assembly 20 is flush with the side wall of the body 10, it will result in the burner assembly 20 being too large, creating a lot of useless space inside the burner assembly 20, and also increasing manufacturing costs. A compact burner assembly 20 is beneficial to reducing manufacturing costs.

[0067] In some examples, the area of ​​the burner assembly 20 projected onto the reference plane is 75% to 85% of the area of ​​the body 10 projected onto the reference plane.

[0068] If the area of ​​the burner assembly 20 projected onto the reference plane is too small, the size of the burner assembly 20 will be too small, resulting in an uncoordinated overall structure of the cooking equipment. If the area of ​​the burner assembly 20 projected onto the reference plane is too large, the distance between the first side wall 201 of the burner assembly 20 and the second side wall 101 of the body 10 will be too short, resulting in less improvement in the exhaust effect of the air outlet 20a.

[0069] As an example, the area of ​​the burner assembly 20 projected onto the reference plane is 80% of the area of ​​the body 10 projected onto the reference plane.

[0070] The shape of the orthographic projection of the burner assembly 20 onto the reference plane can be the same as the shape of the orthographic projection of the body 10 onto the reference plane, for example, both can be polygonal or both can be circular.

[0071] As an example, the orthographic projection of the burner assembly 20 onto the reference plane is a similar figure to the orthographic projection of the body 10 onto the reference plane.

[0072] The shape of the orthographic projection of the burner assembly 20 onto the reference plane may be different from the shape of the orthographic projection of the body 10 onto the reference plane. For example, the orthographic projection of the burner assembly 20 onto the reference plane may be a circle, while the orthographic projection of the body 10 onto the reference plane may be a polygon.

[0073] Figure 5 is an exploded structural diagram of a cooking device provided in an embodiment of this application. As shown in Figure 5, the burner assembly 20 may include a first metal shell 21, and the body 10 includes a second metal shell 11. The first metal shell 21 is connected to the second metal shell 11.

[0074] In related technologies, the outer shell of cooking equipment is usually made of plastic. Plastic can release harmful substances at high temperatures, such as ≥150℃. In particular, the air outlet 20a in these technologies often has poor ventilation, making it easier for the outer shell of the cooking equipment to overheat, increasing the risk of releasing harmful substances. Plastic also ages more rapidly at high temperatures, becoming more brittle and prone to cracking. If it breaks during use, it poses a significant risk of burns.

[0075] In this example, both the first metal casing 21 and the second metal casing 11 are made of metal, which can withstand high temperatures, have a long service life, and will not release harmful gases when heated. Furthermore, since at least a portion of the air outlet 20a is located on the first sidewall 201, the air outlet 20a has good exhaust performance, resulting in good heat dissipation of the cooking equipment, which also helps to reduce the temperature of the first metal casing 21 and the second metal casing 11.

[0076] Furthermore, plastic casings are typically manufactured using injection molds, which are expensive and require costly equipment. The first metal casing 21 and the second metal casing 11, made of metal, can be formed using stamping processes, making them suitable for mass production and resulting in lower costs.

[0077] In some examples, the first metal casing 21 and the second metal casing 11 may be made of stainless steel or aluminum alloy.

[0078] For example, the first metal housing 21 and the second metal housing 11 may be made of SUS430 stainless steel or SUS304 stainless steel.

[0079] In some examples, the outer surface of at least one of the first metal housing 21 and the second metal housing 11 may be brushed, i.e., the wear resistance of the first metal housing 21 and / or the second metal housing 11 may be improved by grinding to form lines on the outer surface of the first metal housing 21 and / or the second metal housing 11.

[0080] In some other possible implementations, the outer surface of at least one of the first metal casing 21 and the second metal casing 11 may also be polished to form a bright outer surface, making the first metal casing 21 and / or the second metal casing 11 easier to clean.

[0081] Optionally, the inner surface of at least one of the first metal casing 21 and the second metal casing 11 may also be provided with a heat insulation layer.

[0082] By providing a heat insulation layer on the inner surface of the first metal shell 21 and / or the second metal shell 11, the transfer of heat to the first metal shell 21 and / or the second metal shell 11 can be reduced, which helps to lower the surface temperature of the cooking equipment and further reduce the risk of burns.

[0083] For example, the insulation layer includes at least one of an aerogel insulation layer or a nano-insulation coating.

[0084] Aerogel insulation is a heat-insulating film formed from aerogel. Aerogel is a nanoscale porous solid material formed by the sol-gel method, in which gas replaces the liquid phase in the gel through a specific drying process. Even a thin layer of aerogel can produce excellent heat insulation properties, significantly reducing the surface temperature of cooking equipment.

[0085] The nano-insulating coating can effectively block infrared rays, thereby reducing the heat radiated to the first metal casing 21 and / or the second metal casing 11, which helps to lower the surface temperature of the cooking equipment.

[0086] For example, the nano-insulating coating may include a nano-silica insulating coating. The thickness of the nano-insulating coating may be 50 μm.

[0087] As shown in Figure 5, the first metal outer shell 21 may be cylindrical, with one end connected to the body 10. The burner assembly 20 may also include a support cylinder 23, which is cylindrical, and the first metal outer shell 21 may be fitted over the support cylinder 23. The support cylinder 23 is used to support the first metal outer shell 21. The end of the support cylinder 23 near the body 10 may be connected to the body 10.

[0088] The burner assembly 20 may also include a top cover 22, which may be connected to at least one of the end of the first metal housing 21 away from the body 10 and the end of the support cylinder 23 away from the body 10.

[0089] For example, the top cover 22 is connected to the first metal housing 21 by a snap-fit ​​structure, or by screws, or by welding.

[0090] The top cover 22 can be a metal structure or a non-metal structure. In some examples, the top cover 22 can be made of the same material as the first metal housing 21.

[0091] A display panel can be provided on the side of the top cover 22 away from the body 10. The display panel is located on the top of the cooking device to conveniently display some parameters of the cooking device during operation, such as heating time and heating temperature. The display panel can also be a touch display panel, allowing users to control the operation of the cooking device through the display panel.

[0092] For example, the display panel and the top cover 22 can be bonded together, for example, by double-sided tape or hot melt adhesive.

[0093] The surface of the display panel can also be fitted with a transparent cover for protection.

[0094] For example, the transparent cover can be a glass cover, such as anti-glare glass (AG glass) or tempered glass.

[0095] The surface of the transparent cover can also be coated, such as with an oleophobic layer, to reduce the adhesion of oil stains and allow for wiping with water, alcohol, or cleaning agents for easy cleaning.

[0096] As shown in Figure 5, the main body 10 may further include a cooking chamber 13, a base plate 14, and a burner head 12. The burner head 12 may be located on top of the cooking chamber 13. The burner head 12 has an air inlet 12a and an exhaust outlet 12b. The air inlet 12a is located inside the burner head assembly 20, and the exhaust outlet 12b communicates with the air outlet 20a. The base plate 14 is located below the cooking chamber 13. The cooking chamber 13 is used to accommodate the cookware 30. A second metal outer shell 11 covers the cooking chamber 13 and is connected to the base plate 14. The burner head 12 may protrude relative to the second metal outer shell 11. The burner head assembly 20 covers the burner head 12, at least to protect the burner head 12 and to isolate the burner head 12 from burns.

[0097] The body 10 may also include a mounting bracket 16, which is mounted on the burner head 12. The mounting bracket 16 may be ring-shaped and may be arranged around the air inlet 12a of the burner head 12.

[0098] The body 10 may also include a circuit board bracket 17, which can be connected to the fixed bracket 16 on the side away from the burner head 12. The circuit board bracket 17 can be used to mount the circuit board. In some examples, the circuit board bracket 17 is not provided, and the circuit board is directly mounted on the fixed bracket 16.

[0099] There is a gap between the base plate 14 and the cooking chamber 13, and there is also a gap between the second metal shell 11 and the cooking chamber 13. The gaps between the base plate 14 and the cooking chamber 13, the gaps between the second metal shell 11 and the cooking chamber 13, and the gaps between the burner assembly 20 and the burner 12 are connected in sequence.

[0100] As an example, as shown in Figure 5, the cooking chamber 13 can accommodate two pots 30 placed side by side. The body 10 may include two burners 12 arranged side by side on the top of the cooking chamber 13. The surface of the cooking device is provided with two air vents 20a, and the exhaust ports 12b of the two burners 12 are connected to the two air vents 20a in a one-to-one correspondence.

[0101] In some other possible implementations, the cooking chamber 13 may also only accommodate one pot 30. For example, Figure 6 is a schematic diagram of the structure of a cooking device according to an embodiment of this application. To facilitate the illustration of the structure of the burner 12, some parts of the structure of the body 10 are omitted in Figure 6. As shown in Figure 6, the body 10 can only accommodate one pot 30. Correspondingly, the top of the cooking chamber 13 is provided with only one burner 12, and the surface of the cooking device may only be provided with one air outlet 20a.

[0102] In other examples, the cooking chamber 13 may also accommodate three or more pots 30 side by side, and correspondingly, three or more burners 12 are arranged side by side on the top of the cooking chamber 13, and the surface of the cooking equipment is also provided with three or more air vents 20a.

[0103] This application embodiment mainly uses the cooking device with two burners 12 shown in Figure 5 as an example for illustration. The structure mentioned in this application embodiment that appears in the cooking device with two burners 12 is also applicable to cooking devices with only one burner 12 or more burners 12.

[0104] Figure 7 is a schematic diagram of the internal structure of a cooking device provided in an embodiment of this application. Figure 7 shows a cooking device whose body 10 can accommodate one pot 30, or a cooking device whose body 10 can accommodate two or more pots 30. The arrows in Figure 7 schematically indicate the approximate airflow direction in a certain area inside the cooking device during operation. The arrows in the figure only indicate direction; the relative magnitudes of different arrows do not limit the relative magnitudes of any parameters, including airflow velocity and airflow rate. As shown in Figure 7, during the operation of the cooking device, air from outside the cooking device can enter the gap between the bottom plate 14 and the cooking chamber 13 through the first through hole 14a on the bottom plate 14, and then flow upwards to the burner assembly 20 through the gap between the second metal outer shell 11 and the cooking chamber 13. In the burner assembly 20, the airflow continues to flow upwards through the gap between the first metal outer shell 21 and the burner 12, and then enters the burner 12 from the air inlet 12a. Air in the burner head 12 can be discharged from the burner head 12 through the exhaust port 12b and discharged to the outside of the cooking equipment through the air outlet 20a. As the airflow flows through the gap between the base plate 14 and the cooking chamber 13, the gap between the second metal shell 11 and the cooking chamber 13, and the gap between the burner head assembly 20 and the burner head 12, it can dissipate heat on the outer surface of the burner head assembly 20 and the outer surface of the body 10, thereby reducing the surface temperature of the cooking equipment.

[0105] When the airflow passes through the gap between the burner assembly 20 and the burner 12, a portion of the airflow also passes through the circuit board 18 mounted on the fixed bracket 16 to dissipate heat from the circuit board 18.

[0106] Figure 8 is a partially enlarged schematic diagram of Figure 7. As shown in Figure 8, a flow guide plate 161 is provided on the edge of the fixed bracket 16. The flow guide plate 161 extends along the length direction of the burner head assembly 20, and there is a gap 16a between the flow guide plate 161 and the burner head assembly 20 for airflow to pass through.

[0107] The support cylinder 23 is installed outside the furnace head 12, and a gap 16a is formed between the support cylinder 23 and the diversion plate 161.

[0108] Figure 8 schematically illustrates the direction of some airflow with arrows. During the operation of the cooking equipment, the airflow inside the support cylinder 23 is drawn into the air inlet 12a of the burner head 12. A gap 16a is formed between the guide plate 161 and the inner wall of the support cylinder 23. When the airflow passes through the gap 16a, it sweeps across the inner wall of the support cylinder 23 at high speed, which can carry away some heat, promote heat dissipation of the support cylinder 23, reduce the temperature of the support cylinder 23, and thus reduce the temperature of the burner head assembly 20.

[0109] Figure 9 is a structural schematic diagram of a fixed bracket provided in an embodiment of this application. As shown in Figure 9, the drainage plate 161 is located at the edge of the fixed bracket 16 and can be arranged around the edge of the fixed bracket 16.

[0110] Referring to Figure 7, the base plate 14 is connected to the bottom of the second metal housing 11, the cooking chamber 13 is located in the second metal housing 11, and the burner head 12 is connected to the cooking chamber 13. The base plate 14 has a first through hole 14a, the gap between the cooking chamber 13 and the base plate 14 forms a first airflow channel 1a, and the gap between the cooking chamber 13 and the second metal housing 11 forms a second airflow channel 1b. The first through hole 14a, the first airflow channel 1a, and the second airflow channel 1b are connected in sequence, and the second airflow channel 1b is connected to the inner side of the burner head assembly 20.

[0111] During the operation of the cooking equipment, as external air flows through it for heat dissipation, the air can enter the first airflow channel 1a through the first through hole 14a on the base plate 14, then enter the second airflow channel 1b from the first airflow channel 1a, and finally enter the burner assembly 20 from the second airflow channel 1b. In this process, the airflow can dissipate heat from the base plate 14 and the second metal outer casing 11, preventing the outer surface temperature of the cooking equipment from becoming too high and helping to reduce the risk of burns.

[0112] Figure 10 is an exploded structural diagram of a cooking chamber according to an embodiment of this application. As shown in Figure 10, the cooking chamber 13 may include a support plate 131 and a side plate 132. The support plate 131 is arranged opposite to the bottom plate 14, and the edges of the support plate 131 are connected to the second metal shell 11 and the bottom plate 14, respectively. The side plate 132 is located on the side of the support plate 131 away from the bottom plate 14, and the side plate 132 is arranged opposite to the second metal shell 11. The gap between the support plate 131 and the bottom plate 14 forms a first airflow channel 1a. The gap between the side plate 132 and the second metal shell 11 forms a second airflow channel 1b.

[0113] Figure 11 is a schematic diagram of a support plate provided in an embodiment of this application. As shown in Figure 11, the support plate 131 also has a plurality of second through holes 131a. The plurality of second through holes 131a are located on the outside of the side plate 132 and the plurality of second through holes 131a connect the first airflow channel 1a and the second airflow channel 1b.

[0114] For example, the edge of the support plate 131 can be connected to the second metal housing 11 and the base plate 14 by a slot, a snap-fit ​​connection, or a screw connection.

[0115] The support plate 131 is used to support the cookware 30 and isolate the cookware 30 from the base plate 14 to prevent the base plate 14 from getting too hot and burning the table or other furniture used to support the cooking equipment.

[0116] A guide rail 1311 can also be provided on the side of the support plate 131 away from the base plate 14. The guide rail 1311 can be used to support the cookware 30 and reduce the contact area between the cookware 30 and the support plate 131.

[0117] The bottom plate 14 is connected to the edge of the support plate 131, serving to support the cooking chamber 13. Multiple second through holes 131a provided on the support plate 131 connect the first airflow channel 1a and the second airflow channel 1b, ensuring smooth airflow.

[0118] During the operation of the cooking equipment, the heat from the support plate 131 can be conducted to the edge and then to the bottom plate 14 and the second metal casing 11. The second through hole 131a is located on the outer side of the side plate 132, close to the edge of the support plate 131. As the airflow flows from the first airflow channel 1a to the second airflow channel 1b through the second through hole 131a, it can also carry away the heat from the edge of the support plate 131, reducing the heat conducted from the support plate 131 to the second metal casing 11 and the bottom plate 14, which helps to lower the temperature of the second metal casing 11 and the bottom plate 14.

[0119] Figure 12 is an exploded structural diagram of a burner head according to an embodiment of this application. As shown in Figure 12, the burner head 12 may include a reflector 121 and a fan cover 122. The reflector 121 is arranged opposite to the support plate 131, and a side plate 132 is connected between the reflector 121 and the support plate 131. The edge of the support plate 131 is connected to the second metal shell 11. The fan cover 122 is connected to the side of the reflector 121 away from the side plate 132, and the gap between the fan cover 122 and the burner head assembly 20 forms a third airflow channel 1c.

[0120] Figure 13 is a schematic diagram of a reflector provided in an embodiment of this application. As shown in Figure 13, the reflector 121 also has a plurality of third through holes 121a, which are located on the outside of the side plate 132 and the fan cover 122. The plurality of third through holes 121a connect the second airflow channel 1b and the third airflow channel 1c.

[0121] The airflow in the second airflow channel 1b can enter the third airflow channel 1c through the third through hole 121a, thereby dissipating heat from the burner assembly 20. The air inlet 12a is located on the fan cover 122, and the airflow in the third airflow channel 1c can flow along the surface of the fan cover 122 and flow to the air inlet 12a through the gap 16a.

[0122] The second metal casing 11 is connected to the edge of the reflector 121, which can provide some support. The third through hole 121a is located on the outside of the side plate 132 and the fan cover 122, and is close to the edge of the reflector 121. As the airflow flows from the second airflow channel 1b to the third airflow channel 1c through the third through hole 121a, it can also carry away the heat from the edge of the reflector 121, reduce the heat conducted from the reflector 121 to the second metal casing 11, and help to lower the temperature of the second metal casing 11.

[0123] The burner head 12 may also include a heat pipe 123, a fan 124, and a micro switch 125. The heat pipe 123 is located on the side of the reflector 121 away from the fan cover 122, and the fan 124 is disposed in the fan cover 122. The micro switch 125 may be disposed on the outer surface of the fan cover 122 or on the reflector 121.

[0124] Referring again to Figure 5, the housing 10 may also include a connecting cover 15. The first metal casing 21 and the second metal casing 11 are connected by the connecting cover 15. The outer surface of the connecting cover 15 is a convex curved surface.

[0125] For example, the outer surface of the connecting cover 15 is an arc surface, and the radius of the arc can be 10mm to 15mm.

[0126] The connecting cover 15 serves as a transitional connection between the first metal casing 21 and the second metal casing 11. The outer surface of the connecting cover 15 protrudes from the outer side of the body 10 and is curved, which can facilitate the sliding of dust off the surface of the connecting cover 15 and reduce the accumulation of dust on the surface of the cooking equipment.

[0127] The connecting cover 15 can be a metal structural component, which is convenient for forming by stamping process.

[0128] For example, the connecting cover 15 can be a stainless steel structure. The connecting cover 15 can be made of the same metal material as the second metal housing 11.

[0129] In some examples, the outer surface of the connecting cover 15 is a convex curved surface, while the inner surface can be a concave curved surface. The concave curved surface has low airflow resistance, which facilitates airflow from the gap between the second metal shell 11 and the cooking chamber 13 to the gap between the burner assembly 20 and the burner 12. This can prevent turbulence from causing the surface temperature of the cooking device to become too high.

[0130] The gap between the inner surface of the connecting cover 15 and the outer surface of the fan cover 122 forms a fourth airflow channel 1d. The airflow discharged from the third through hole 121a can flow through the fourth airflow channel 1d to the third airflow channel 1c, and the connecting cover 15 can be cooled in the process.

[0131] As shown in Figure 4, a portion of the air outlet 20a is located on the first metal casing 21, and the other portion of the air outlet 20a is located on the connecting cover 15. That is, the notch on the edge of the first metal casing 21 and the notch on the edge of the connecting cover 15 are joined together to form the air outlet 20a.

[0132] By placing a portion of the air outlet 20a within the first metal casing 21, even if the second side wall 101 of the unit 10 is located near a wall or cabinet, there is still a significant gap between the portion of the air outlet 20a located within the first metal casing 21 and the wall or cabinet, allowing for smooth air exhaust. By utilizing a portion of the connecting cover 15 to house the air outlet 20a, its size can be increased, which is beneficial for the exhaust of the cooking equipment and improves heat dissipation.

[0133] In some other possible implementations, the air outlet 20a may also be located solely on the first metal housing 21. Compared to the surface of the connecting cover 15, the first sidewall 201 of the first metal housing 21 is flatter, making it easier to arrange the air outlet 20a and reducing manufacturing costs.

[0134] As shown in Figure 5, the cooking device may also include an air vent 40. The air vent 40 is connected to the air outlet 20a. The air vent 40 includes a frame 41 and a plurality of air guide vanes 42, with both ends of the air guide vanes 42 connected to the frame 41 respectively.

[0135] The air outlet shroud 40 can be a metal structure or a plastic structure. For example, the air outlet shroud 40 can be a metal structure. The airflow exiting the air outlet 20a has a high temperature. A metal air outlet shroud 40 can withstand high temperatures and has a long service life.

[0136] The air guide vane 42 in the air outlet hood 40 can guide the airflow to change the direction of the airflow in the air outlet 20a, so that the airflow flows in the desired direction.

[0137] In some examples, the thickness of the metal in the air outlet shroud 40 can be 0.8 mm to 1.5 mm. For example, the thickness of the air guide 42 is 0.8 mm to 1.5 mm, and / or the thickness of the frame 41 is 0.8 mm to 1.5 mm.

[0138] The thickness of the air guide plate 42 is set between 0.8mm and 1.5mm to avoid the air guide plate 42 being too thin and having insufficient structural strength, which would cause vibration and noise when the airflow passes through the air outlet hood 40.

[0139] In some examples, the air guide vane 42 is set at an acute angle to the first sidewall 201.

[0140] The acute angle between the air guide vane 42 and the first side wall 201 can refer to the acute angle formed by the intersection of the plane where the air guide vane 42 is located and the plane where the first side wall 201 is located.

[0141] When using cooking appliances, users typically do not want airflow to flow directly towards a wall or cabinet from the air outlet 20a. This is because the airflow exiting from the air outlet 20a is at a higher temperature. If this high-temperature airflow flows directly towards the wall or cabinet, prolonged exposure to this hot airflow can damage the wall or cabinet, causing phenomena such as fading or dampness. When the cooking appliance is placed near a wall or cabinet, the first side wall 201 and the second side wall 101 are usually directly facing the wall or cabinet. By setting the air guide vane 42 at an acute angle to the first side wall 201, the direction of airflow exiting from the air outlet 20a forms an acute angle with the first side wall 201, thus preventing the airflow exiting from the air outlet 20a from washing against the wall or cabinet.

[0142] In some examples, multiple air guide vanes 42 are arranged at intervals along the height direction of the fuselage 10, and the length direction of the air guide vanes 42 is perpendicular to the height direction of the fuselage 10.

[0143] When the cooking equipment is placed, the body 10 is usually vertical, and the height direction of the body 10 is also the vertical direction. The length direction of the air guide vane 42 is arranged perpendicular to the height direction of the body 10, making the length direction of the air guide vane 42 horizontal. This allows the air guide vane 42 to change the direction of airflow in the vertical plane. For example, it can cause the airflow discharged from the air outlet 20a to be discharged in an upward direction at an angle; or, for example, it can cause the airflow discharged from the air outlet 20a to be discharged in a downward direction at an angle. Multiple air guide vanes 42 arranged at intervals along the height direction of the body 10 can ensure that the airflow discharged from the air outlet 20a flows in the direction guided by the air guide vane 42.

[0144] As an example, the opening direction of the air guide vane 42 at an acute angle to the first side wall 201 is upward, that is, the air guide vane 42 can make the airflow discharged from the air outlet 20a discharged in an upward direction.

[0145] For example, the acute angle between the air guide vane 42 and the first sidewall 201 can be no less than 45°. For example, 55°.

[0146] If the acute angle between the air guide vane 42 and the first side wall 201 is too small, the air guide vane 42 will obstruct the airflow too much, affecting the rapid discharge of airflow and hindering the improvement of heat dissipation.

[0147] The acute angles formed by the multiple air guide vanes 42 and the first sidewall 201 can be the same. For example, the acute angle between each air guide vane 42 and the first sidewall 201 is 55°.

[0148] The acute angles formed by the multiple air guide vanes 42 and the first sidewall 201 may also be different. For example, some air guide vanes 42 may form an acute angle of 45° with the first sidewall 201, while others may form an acute angle of 55° with the first sidewall 201.

[0149] As an example, the air outlet 20a is disposed on the first metal housing 21 and the connecting cover 15. A portion of the air outlet shroud 40 is connected to the first metal housing 21, and another portion of the air outlet shroud 40 is connected to the connecting cover 15. Multiple air guide vanes 42 may include multiple first air guide vanes and multiple second air guide vanes, wherein the first air guide vanes are connected to the portion of the air outlet shroud 40 connected to the first metal housing 21, and the second air guide vanes 42 are connected to the portion of the air outlet shroud 40 connected to the connecting cover 15. The acute angle formed by the first air guide vane and the first sidewall 201 may be different from the acute angle formed by the second air guide vane and the first sidewall 201.

[0150] The acute angles formed by the multiple first air guide vanes and the first sidewall 201 can be the same or different; the acute angles formed by the multiple second air guide vanes and the first sidewall 201 can be the same or different.

[0151] In some examples, the air guide vane 42 can be rotatably connected to the frame 41, so that the size of the acute angle formed between the air guide vane 42 and the first side wall 201 can be adjusted by rotating the air guide vane 42. When the cooking equipment is not used for a long time, multiple air guide vanes 42 can be rotated to close each other and shut off the air outlet 20a to prevent foreign objects from entering the interior of the cooking equipment through the air outlet 20a.

[0152] In other possible implementations, the direction in which multiple air guide vanes 42 are arranged at intervals can also be perpendicular to the height direction of the fuselage 10, with the length direction of the air guide vanes 42 arranged along the height direction of the fuselage. This allows the air guide vanes 42 to change the direction of airflow in the horizontal plane, for example, causing the airflow discharged from the air outlet 20a to be discharged in a direction biased to the left of the air outlet 20a; or, for example, causing the airflow discharged from the air outlet 20a to be discharged in a direction biased to the right of the air outlet 20a.

[0153] As shown in Figure 4, the second side wall 101 of the fuselage 10 can also be connected to a partition wall 50, which protrudes from the second side wall 101.

[0154] The partition 50 protruding from the second side wall 101 can prevent the second side wall 101 from being flush against the wall or cabinet when the cooking equipment is placed near the wall or cabinet, so that the second side wall 101 and the wall or cabinet always maintain a certain distance. This helps to increase the distance between the air outlet 20a and the wall or cabinet, further reducing the impact of the wall or cabinet on the exhaust effect of the air outlet 20a, which is beneficial to the exhaust of the air outlet 20a and further promotes the heat dissipation of the cooking equipment.

[0155] Multiple partition wall components 50 can be provided, and the arrangement direction of multiple partition wall components 50 can be perpendicular to the height direction of the body 10.

[0156] In some examples, the partition member 50 can be a length-adjustable rod.

[0157] When cooking equipment is placed near a wall or cabinet, the minimum distance between the second side wall 101 and the wall or cabinet can be adjusted by adjusting the length of the partition 50. This means adjusting the minimum distance between the air outlet 20a and the wall or cabinet, ensuring that the distance between the air outlet 20a and the wall or cabinet is always sufficient to provide good heat dissipation.

[0158] For example, the partition member 50 can be a metal corrugated pipe, such as a stainless steel corrugated pipe; it can also be a shape memory alloy spring; or it can be a telescopic rod, such as a telescopic rod formed by two or more pipes connected together.

[0159] For example, the length of the partition member 50 can range from 20mm to 50mm. That is, the partition member 50 can be shortened to 20mm or extended to 50mm.

[0160] In some other possible implementations, the partition member 50 can also be a rod of fixed length to save costs.

[0161] The end of the partition 50 away from the second side wall 101 may also be connected to a buffer pad 51, which can play a buffering role when the cooking equipment collides with the wall or cabinet during the placement of the cooking equipment.

[0162] For example, the cushioning pad 51 can be a silicone pad.

[0163] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A cooking device, characterized in that, The cooking device includes a burner assembly (20) and a body (10), wherein the burner assembly (20) is disposed on the top of the body (10); the surface of the cooking device is provided with an air outlet (20a), and at least a portion of the air outlet (20a) is located on the first sidewall (201) of the burner assembly (20); The orthographic projection of the burner assembly (20) on the reference plane is located within the orthographic projection of the body (10) on the reference plane, and the orthographic projection of the first sidewall (201) on the reference plane is located inside the orthographic projection of the second sidewall (101) of the body (10) on the reference plane. The reference plane is a plane perpendicular to the height direction of the body (10), and the first sidewall (201) and the second sidewall (101) are located on the same side of the cooking device.

2. The cooking apparatus according to claim 1, characterized in that, The orthographic projection of each sidewall of the burner assembly (20) onto the reference plane is located inside the orthographic projection of the body (10) onto the reference plane.

3. The cooking apparatus according to claim 2, characterized in that, The area of ​​the burner assembly (20) projected onto the reference plane is 75% to 85% of the area of ​​the fuselage (10) projected onto the reference plane.

4. The cooking apparatus according to any one of claims 1 to 3, characterized in that, The burner assembly (20) includes a first metal shell (21), and the body (10) includes a second metal shell (11), wherein the first metal shell (21) is connected to the second metal shell (11).

5. The cooking apparatus according to claim 4, characterized in that, The body (10) also includes a connecting cover (15), the first metal shell (21) and the second metal shell (11) are connected by the connecting cover (15), and the outer surface of the connecting cover (15) is a convex curved surface.

6. The cooking apparatus according to claim 5, characterized in that, A portion of the air outlet (20a) is located in the first metal housing (21), and another portion of the air outlet (20a) is located in the connecting cover (15).

7. The cooking apparatus according to any one of claims 1 to 3, 5 to 6, characterized in that, The cooking device also includes an air vent (40) connected to the air outlet (20a); The air outlet cover (40) includes a frame (41) and a plurality of air guide vanes (42), with the two ends of the air guide vanes (42) respectively connected to the frame (41).

8. The cooking apparatus according to claim 7, characterized in that, The air guide vane (42) is set at an acute angle to the first sidewall (201).

9. The cooking apparatus according to claim 7, characterized in that, The plurality of air guide vanes (42) are arranged at intervals along the height direction of the fuselage (10), and the length direction of the air guide vanes (42) is perpendicular to the height direction of the fuselage (10).

10. The cooking apparatus according to any one of claims 1 to 3, 5 to 6, 8 to 9, characterized in that, The second sidewall (101) is connected to a partition wall member (50), which protrudes from the second sidewall (101).

11. The cooking apparatus according to claim 10, characterized in that, The partition wall component (50) is a rod with adjustable length.

12. The cooking apparatus according to claim 4, characterized in that, The body (10) also includes a burner head (12) and a fixed bracket (16). The burner head (12) protrudes relative to the second metal shell (11), and the burner head assembly (20) covers the burner head (12). The fixed bracket (16) is mounted on the burner head (12), and the fixed bracket (16) is arranged around the air inlet (12a) of the burner head (12). The fixed bracket (16) is provided with a flow guide plate (161) on its edge. The flow guide plate (161) extends along the length direction of the burner assembly (20). There is a gap (16a) between the flow guide plate (161) and the burner assembly (20) for airflow to pass through.

13. The cooking apparatus according to claim 12, characterized in that, The body (10) also includes a cooking chamber (13) and a base plate (14). The base plate (14) is connected to the bottom of the second metal shell (11). The cooking chamber (13) is located in the second metal shell (11). The burner (12) is connected to the cooking chamber (13). The base plate (14) has a first through hole (14a). The gap between the cooking chamber (13) and the base plate (14) forms a first airflow channel (1a). The gap between the cooking chamber (13) and the second metal shell (11) forms a second airflow channel (1b). The first through hole (14a), the first airflow channel (1a) and the second airflow channel (1b) are connected in sequence. The second airflow channel (1b) is connected to the inside of the burner assembly (20).

14. The cooking apparatus according to claim 13, characterized in that, The cooking chamber (13) includes a support plate (131) and a side plate (132); The support plate (131) is arranged opposite to the bottom plate (14). The edge of the support plate (131) is connected to the second metal shell (11) and the bottom plate (14) respectively. The gap between the support plate (131) and the bottom plate (14) forms the first airflow channel (1a). The side plate (132) is located on the side of the support plate (131) away from the bottom plate (14). The side plate (132) is arranged opposite to the second metal shell (11). The gap between the side plate (132) and the second metal shell (11) forms the second airflow channel (1b). The support plate (131) also has a plurality of second through holes (131a), which are located on the outside of the side plate (132) and connect the first airflow channel (1a) and the second airflow channel (1b).

15. The cooking apparatus according to claim 14, characterized in that, The burner head (12) includes a reflector (121) and a fan cover (122). The reflector (121) is arranged opposite to the support plate (131). The side plate (132) is connected between the reflector (121) and the support plate (131). The edge of the support plate (131) is connected to the second metal shell (11). The fan cover (122) is connected to the side of the reflector (121) away from the side plate (132), and the gap between the fan cover (122) and the burner assembly (20) forms a third airflow channel (1c); The reflector (121) also has a plurality of third through holes (121a), which are located on the outside of the side plate (132) and the fan cover (122) and connect the second airflow channel (1b) and the third airflow channel (1c).