Cooking utensil

Abstract

The utility model discloses a cooking utensil, and relates to the technical field of kitchen appliances. The cooking utensil comprises a door assembly and a box body, the door assembly comprises a door body, the door body comprises a door plate and a heat insulation plate, the door body comprises a gas channel, a first gas inlet and a first gas outlet, the gas channel and the first gas inlet and the first gas outlet are formed between the door plate and the heat insulation plate, and a heat insulation space is formed in the heat insulation plate; the gas concentration in the heat insulation space is smaller than that of air outside the heat insulation plate; the box body is provided with an opening, the door body is hinged to the box body to open or close the opening, the box body comprises a heat dissipation pipeline, a second air inlet and a second air outlet, the second air inlet and the second air outlet are communicated with the heat dissipation pipeline, and the first air outlet is communicated with the second air inlet. According to the cooking utensil, the temperature of gas passing through the gas channel cannot be obviously increased, an obvious heat dissipation effect can be achieved on components in the box body, and the heat dissipation capacity of the cooking utensil is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a cooking utensil. Background Art

[0002] As people's living standards continue to improve, cooking utensils with multiple cooking functions have gradually become indispensable cooking devices in people's kitchens. When the cooking utensils are working, a large amount of heat will be released in the inner pot, and the components in the door and the box need to be cooled to avoid overheating and scalding users or reducing the life of components.

[0003] In the prior art, a heat dissipation pipeline and a fan are usually arranged in the box for active heat dissipation, and the heat dissipation pipeline is connected to the gas channel of the door body, so that the air inlet position of the cover plate heat dissipation pipeline can also dissipate heat for the door body and the components in the box body, avoiding excessive door body temperature to burn users and excessive component temperature to affect service life. However, the thermal insulation effect of the door body is poor, resulting in an increase in the temperature of the gas in the gas channel of the door body, affecting the heat dissipation effect in the box body. Utility Model Content

[0004] The utility model aims to provide a cooking utensil, which can prevent the temperature of gas passing through the gas channel from rising significantly, and can play a significant heat dissipation effect on components in the box, thereby improving the heat dissipation capacity of the cooking utensil.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A cooking appliance, comprising:

[0007] A door assembly, comprising a door body, wherein the door body comprises a door panel and a heat insulation board, wherein the door panel and the heat insulation board are spaced apart to form a gas passage between the door panel and the heat insulation board and a first air inlet and a first air outlet connected to the gas passage, wherein a heat insulation space is provided inside the heat insulation board, and a gas concentration in the heat insulation space is lower than a gas concentration in air outside the heat insulation board;

[0008] A box body is provided with an opening, the door body is hinged to the box body to open or close the opening, the box body includes a heat dissipation pipeline and a second air inlet and a second air outlet connected to the heat dissipation pipeline, a fan is arranged in the heat dissipation pipeline, and the first air outlet is connected to the second air inlet.

[0009] As an optional solution of the above cooking utensil, the thickness of the heat insulation board is 25% to 30% of the thickness of the door body.

[0010] As an optional solution of the above cooking utensil, the heat insulation board is arranged on a side of the door body close to the opening, and when the door body closes the opening, the heat insulation board is in sealing contact with the box body.

[0011] As an optional solution of the above-mentioned cooking appliance, the door assembly further includes a camera, which is arranged in the gas passage, and the heat insulation board has a transparent area, and the camera can take pictures through the transparent area.

[0012] As an optional solution of the above-mentioned cooking appliance, the door assembly also includes a bracket, which is arranged in the gas channel, and the bracket includes a cavity and two connecting ports that are connected to the cavity and arranged opposite to each other, and the camera is arranged in the cavity.

[0013] As an optional solution for the above-mentioned cooking utensil, the bracket is located above the door body, the bracket includes a back plate and a first bottom plate, the first bottom plate is connected to the bottom end of the back plate, the camera is arranged on the back plate and tilted downward, and the first bottom plate is arranged at an obtuse angle to the back plate.

[0014] As an optional solution for the above-mentioned cooking appliance, the door assembly also includes a support frame, which is arranged between the door panel and the insulation board, and the door panel, the insulation board and the support frame form the gas channel. The support frame is provided with a first air inlet and a first air outlet connected to the gas channel.

[0015] As an optional solution for the above-mentioned cooking utensil, the support frame includes two vertical parts spaced apart in the horizontal direction and horizontal parts respectively connected to the two vertical parts, the first air inlet is formed between the bottom ends of the two vertical parts, and the first air outlet is opened in the horizontal part.

[0016] As an optional solution for the above-mentioned cooking utensil, the horizontal part includes a connected transverse plate and a vertical plate, the transverse plate is respectively connected to the top ends of the two vertical parts, the vertical plate is located on the side of the two vertical parts away from the door panel and is connected to the insulation board, and the first air outlet is opened on the vertical plate.

[0017] As an optional solution of the above-mentioned cooking appliance, the second air outlet is located above the connecting position of the first air outlet and the second air inlet, and the opening position of the second air outlet is located in front of the connecting position of the first air outlet and the second air inlet.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a cooking utensil. Since the gas concentration in the heat-insulating space of the heat-insulating board is lower than the gas concentration of the air outside the heat-insulating board, the heat-conducting capacity of the heat-insulating space is much lower than that of the air between conventional adjacent heat-insulating glasses. In other words, the heat-insulating space has good heat-insulating capacity, and when the external air passes through the gas channel, the temperature will not rise significantly, which can play a significant heat dissipation effect on the components in the box, thereby improving the heat dissipation capacity of the cooking utensil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the cooking utensil provided by the utility model;

[0021] Figure 2 It is a structural schematic diagram of the door assembly provided by the utility model;

[0022] Figure 3 It is an exploded view of the cooking utensil provided by the utility model;

[0023] Figure 4 is a cross-sectional view of the cooking utensil provided by the utility model;

[0024] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0025] Figure 6 It is an exploded view of the door assembly provided by the utility model;

[0026] Figure 7 It is a front view of the door assembly provided by the utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the bracket provided by the utility model Figure 1 ;

[0028] Fig. 9 This is a schematic diagram of the structure of the bracket provided by the utility model Figure 2 .

[0029] In the figure:

[0030] 1. Door assembly; 2. Box body; 3. Inner liner;

[0031] 11. Door; 12. Gas channel; 13. Bracket; 14. Camera; 15. Support frame; 21. Opening; 22. Heat dissipation pipeline; 23. Fan; 24. Front panel;

[0032] 111, door panel; 112, heat insulation board; 113, first air inlet; 114, first air outlet; 151, vertical portion; 152, horizontal portion; 221, upper cover; 222, partition; 223, lower cover; 224, second air inlet; 225, second air outlet; 226, condensation assembly; 227, reflux box; 131, communication port; 132, second bottom plate; 133, top plate; 134, back plate; 135, first bottom plate; 136, side plate; 137, sunshade;

[0033] 1341. mounting column; 1342. card slot; 1521. horizontal plate; 1522. vertical plate; 2221. return hole. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0036] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0039] As people's living standards continue to improve, cooking utensils with multiple cooking functions have gradually become indispensable cooking devices in people's kitchens. Figure 1 and Figure 2 As shown, this embodiment provides a cooking utensil, which includes a box body 2 and a door assembly 1. The box body 2 is provided with an opening 21, through which food can be put into an inner pot 3 in the box body 2 for cooking, and the door assembly 1 is hinged to the box body 2 to open or close the opening 21. Specifically, the cooking utensil can be a steamer, a steam oven, or a steam-and-bake micro-in-one machine, etc. The box body 2 includes a front plate 24, and the opening 21 is provided on the front plate 24.

[0040] Since the cooking appliance needs to heat the food, the temperature of the inner pot 3 is very high when the cooking appliance is working, which may easily affect the surrounding electronic components. Figure 3 to Figure 5 As shown, in order to solve the above problems, the box body 2 includes a heat dissipation pipeline 22 and a second air inlet 224 and a second air outlet 225 connected to the heat dissipation pipeline 22. The heat dissipation pipeline 22 is arranged on the outside of the inner tank 3. In order to enable the gas in the heat dissipation pipeline 22 to flow from the second air inlet 224 to the second air outlet 225, a fan 23 is arranged in the heat dissipation pipeline 22. After the fan 23 is started, the cold air outside the box body 2 enters the heat dissipation pipeline 22 through the second air inlet 224, and is discharged from the heat dissipation pipeline 22 through the second air outlet 225, thereby taking away the heat dissipated by the inner tank 3, avoiding affecting other electronic components in the box body 2.

[0041] Specifically, the second air inlet 224 of the heat dissipation pipeline 22 is opened on the front plate 24. Generally speaking, the cooking appliance is usually placed on a shelf or in a specially provided wall groove, resulting in poor air flow around the cooking appliance, with only the front space open. Therefore, the second air inlet 224 is opened on the front plate 24 to facilitate the external cold air to be sucked into the heat dissipation pipeline 22 by the fan 23.

[0042] Similarly, the second air outlet 225 of the heat dissipation pipeline 22 is opened on the front plate 24 so that the air that has absorbed heat can be discharged smoothly, thereby improving the heat dissipation capacity.

[0043] like Figure 3 As shown, the heat dissipation duct 22 includes an upper cover 221 and a lower cover 223 that are interlocked, and a roughly horizontal partition 222 is arranged between the upper cover 221 and the lower cover 223 to separate the heat dissipation duct 22 into an air inlet duct and an air outlet duct arranged upper and lower. The fan 23 is arranged on the partition 222. Under this arrangement, the second air inlet 224 and the second air outlet 225 can be opened on the front plate 24 to ensure the heat dissipation capacity.

[0044] In order to reduce the content of water vapor in the air discharged from the second air outlet 225, a condensation component 226 is provided in the air outlet duct, and the condensation component 226 can condense the water vapor into liquid water. In this embodiment, the cooking appliance further includes a reflux box 227, which is provided in the air inlet duct, and the partition plate 222 is provided with a reflux hole 2221, through which the condensed liquid water can flow into the reflux box 227, and the reflux box 227 can collect the condensed water and can also be connected to other pipelines to guide the condensed water to other required locations.

[0045] It is understandable that when the door assembly 1 closes the opening 21, the temperature in the inner liner 3 will also affect the door assembly 1, causing the temperature of the door assembly 1 to rise. Users are easily burned when touching the door assembly 1. To solve the above problem, the door assembly 1 includes a door body 11, the door body 11 includes a gas channel 12 and a first air inlet 113 and a first air outlet 114 connected to the gas channel 12, and the first air outlet 114 is connected to the second air inlet 224.

[0046] Since the second air inlet 224 of the heat dissipation duct 22 is connected with the first air outlet 114 of the gas channel 12 of the door assembly 1, when the fan 23 is started, the external air with a lower temperature will be sucked into the gas channel 12 from the first air inlet 113, and enter the heat dissipation duct 22 through the first air outlet 114 and the second air inlet 224, and finally be discharged from the second air outlet 225, thereby completing the heat dissipation of the door body 11, avoiding scalding the user, and extending the service life of components.

[0047] like Figure 6 and Figure 7 As shown, the door body 11 includes a door panel 111 and an insulation board 112 . The door panel 111 and the insulation board 112 are spaced apart. An insulation space is provided in the insulation board 112 . The gas concentration in the insulation space is lower than the gas concentration of the air outside the insulation board 112 .

[0048] The gas concentration refers to the number of gas molecules per unit volume. Since the gas molecules absorb energy, their irregular motion intensifies, and they collide with each other to transfer heat, the thermal conductivity of the gas is proportional to the gas concentration. Therefore, the thermal conductivity of the insulating space is much lower than that of the air between traditional adjacent insulating glass. In other words, the insulating space has good thermal insulation capacity. When the external air passes through the gas channel 12, the temperature will not rise significantly, which can have a significant heat dissipation effect on the components in the box 2, thereby improving the heat dissipation capacity of the cooking appliance.

[0049] Furthermore, the thickness of the heat insulating plate 112 is 25% to 30% of the thickness of the door body 11. Since the door body 11 has a heat insulating space, the heat insulating plate 112 of the door body 11 can be set to be thinner, so as to increase the distance between the heat insulating plate 112 and the door panel 111 while ensuring effective heat insulating capacity, thereby increasing the cross-sectional area of ​​the gas channel 12, increasing the air intake, and improving the heat dissipation capacity of the cooking appliance.

[0050] Furthermore, the heat insulation board 112 is arranged on one side of the door body 11 close to the opening 21, and when the door body 11 closes the opening 21, the heat insulation board 112 is in sealed contact with the box body 2. The heat insulation board 112 can effectively isolate the heat exchange between the inner tank 3 and the outside, which can not only prevent the door body 11 from overheating, but also reduce the heat loss of the inner tank 3, improve energy efficiency, and reduce energy consumption.

[0051] like Figure 6 and Figure 7 As shown, in order to increase the intelligence level of the cooking appliance, the door assembly 1 also includes a camera 14, which is arranged in the gas channel 12. The insulation board 112 has a transparent area. The camera 14 can take pictures through the transparent area to identify the type of food and the maturity of the food in the inner pot 3 during the cooking process.

[0052] Since the camera 14 is located between the door panel 111 and the insulation board 112, the insulation board 112 can isolate the heat in the inner pot 3 of the cooking utensil. Moreover, the insulation board 112 has an insulation space with a gas concentration lower than that of the external air. Therefore, the insulation board 112 can achieve the same insulation effect with a smaller thickness, thereby improving the shooting effect of the camera 14.

[0053] That is to say, when the fan 23 is started, the negative pressure in the heat dissipation pipeline 22 can increase the air flow rate in the gas channel 12, and the external cold air can continuously enter the heat dissipation pipeline 22 through the gas channel 12, further improving the heat dissipation capacity of the camera 14, ensuring the performance of the camera 14 and extending its service life. In addition, since the thickness of the heat insulation board 112 is relatively small, the overall thickness of the door body 11 can also be reduced, thereby improving the effect of taking pictures and improving the user experience.

[0054] In this embodiment, the heat-insulating space is vacuum, so that the heat-insulating board 112 has good heat-insulating ability.

[0055] In this embodiment, the heat insulation board 112 includes at least two layers of board bodies, and the two adjacent layers of board bodies are sealed and connected by an annular sealing portion, and the interior of the sealing portion forms a heat insulation space. The sealing portion can support the two layers of board bodies, ensure that the distance between the two layers of board bodies remains unchanged, and ensure the sealing by sealing to form a heat insulation space. Specifically, the board body is a glass board, and the heat insulation board 112 can also include more layers of board bodies to improve the heat insulation capacity.

[0056] Generally, in the heat insulation structure formed by multiple layers of glass, the thickness of the glass and the distance between adjacent glass are greater than 4 mm, which results in the overall thickness of the heat insulation structure being greater than 12 mm. In this embodiment, the thickness of the plate is 2 mm to 4 mm. By using a thinner plate, the overall thickness of the heat insulation board 112 can be reduced. Specifically, the thickness of the plate can be 2 mm, 2.5 mm, 3 mm, 3.5 mm or 4 mm.

[0057] In this embodiment, the distance between two adjacent layers of plates is 0.1 mm to 0.2 mm. Since there is a heat-insulating space between two adjacent layers of plates, the heat-insulating space has good heat-insulating capacity, so the heat-insulating board 112 can still have good heat-insulating capacity under the premise of reducing the distance between the two layers of plates. Specifically, the distance between two adjacent layers of plates can be 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm or 0.2 mm.

[0058] like Figure 5 As shown, the first air outlet 114 and the second air inlet 224 are directly opposite to each other to ensure that the gas in the gas channel 12 can be sucked into the heat dissipation pipeline 22. It can be understood that there is a gap between the first air outlet 114 and the second air inlet 224. In order to prevent the hot air discharged from the second air outlet 225 from being re-sucked into the heat dissipation pipeline 22 through the gap between the first air outlet 114 and the second air inlet 224, the second air outlet 225 is located above the communication position of the first air outlet 114 and the second air inlet 224, and the opening position of the second air outlet 225 is located in front of the communication position of the first air outlet 114 and the second air inlet 224.

[0059] The second air outlet 225 is located above the connection position between the first air outlet 114 and the second air inlet 224, so that the hot air discharged from the second air outlet 225 can pass through the door body 11 and be discharged outside the cooking appliance. The opening position of the second air outlet 225 is located in front of the connection position between the first air outlet 114 and the second air inlet 224, so that the discharged hot air can pass through the door body 11 faster, keep the hot air away from the gap between the first air outlet 114 and the second air inlet 224, and avoid being re-inhaled.

[0060] like Figure 6 and Figure 7 As shown, the door assembly 1 further includes a support frame 15, which is disposed between the door panel 111 and the heat insulation board 112. The door panel 111, the heat insulation board 112 and the support frame 15 form a gas channel 12, and the support frame 15 is provided with a first air inlet 113 and a first air outlet 114 which are connected to the gas channel 12. The support frame 15 can improve the overall strength of the door body 11, prevent the door body 11 from being deformed, and can also form a gas channel 12 between the door panel 111 and the heat insulation board 112.

[0061] In order to prevent the heat of the inner liner 3 from affecting the temperature of the gas in the gas channel 12, the orthographic projection of the gas channel 12 in the thickness direction of the door body 11 is located inside the heat-insulating space. The heat-insulating space can effectively block the heat and prevent the cold air in the gas channel 12 from being affected by the heat of the inner liner 3 and being heated up, thereby ensuring the heat dissipation effect of the heat dissipation channel.

[0062] In this embodiment, the support frame 15 includes two vertical parts 151 arranged at intervals in the horizontal direction and a horizontal part 152 connected to the two vertical parts 151 respectively. The space between the bottom ends of the two vertical parts 151 forms a first air inlet 113, and the first air outlet 114 is opened in the horizontal part 152. The vertical part 151 and the horizontal part 152 can support the door body 11 from two directions perpendicular to each other, respectively, to improve the strength of the door body 11. Moreover, a gas channel 12 is formed between the two vertical parts 151 to allow gas to pass through. By changing the distance between the two vertical parts 151, the cross-sectional area of ​​the gas channel 12 can also be adjusted, thereby changing the gas flow rate. Since the first air inlet 113 is located at the bottom end of the support frame 15, from the perspective of the cooking utensil as a whole, the inlet and outlet of the heat dissipation path formed by the heat dissipation pipeline 22 and the gas channel 12 are far apart, and the hot air discharged from the outlet will not affect the air temperature near the inlet, so as to ensure that the cooking utensil always has good heat dissipation capacity.

[0063] Furthermore, the horizontal portion 152 includes a connected transverse plate 1521 and a vertical plate 1522, the transverse plate 1521 is respectively connected to the top ends of the two vertical portions 151, the vertical plate 1522 is located on the side of the two vertical portions 151 away from the door panel 111 and is connected to the heat insulation board 112, and the first air outlet 114 is opened on the vertical plate 1522 to ensure that the first air outlet 114 can be opposite to the second air inlet 224.

[0064] In this embodiment, the camera 14 is disposed at the upper portion of the door body 11 to be close to the first air outlet 114. On the one hand, the camera 14 can be placed at a higher position, thereby increasing the shooting range of the camera 14; on the other hand, since the gas in the gas channel 12 will pass through the first air outlet 114, the camera 14 is close to the first air outlet 114, which can allow more gas to pass through the camera 14, thereby improving the heat dissipation effect of the camera 14.

[0065] like Figure 6 to Figure 9 As shown, the door body 11 also includes a bracket 13, which is arranged in the gas channel 12. The bracket 13 includes a cavity and two connecting ports 131 connected to the cavity and arranged oppositely. The camera 14 is arranged in the cavity. In order to ensure the heat dissipation of the camera 14, the bracket 13 is provided with a connecting port 131. When the gas in the gas channel 12 flows, it will exchange with the gas in the bracket 13 through the connecting port 131, thereby taking away the heat of the camera 14. The two connecting ports 131 arranged oppositely can ensure the all-round heat dissipation of the camera 14, and avoid the accumulation of heat caused by the poor local heat dissipation effect of the camera 14.

[0066] like Figure 8 and Fig. 9 As shown, the bracket 13 includes a top plate 133, a back plate 134 and a first bottom plate 135 which are connected in sequence. The top plate 133, the back plate 134, the first bottom plate 135 and the heat insulation plate 112 together form a space for installing the camera 14. The connecting port 131 can connect the camera 14 with the gas channel 12. The top plate 133 covers the camera 14 in the vertical direction to protect the camera 14 from contacting condensed water droplets, thereby ensuring the normal use of the camera 14.

[0067] It is understandable that, in order to improve the shooting range of the camera 14, the bracket 13 is located at the upper part of the door body 11, the first bottom plate 135 is connected to the bottom end of the back plate 134, the camera 14 is arranged on the back plate 134 and tilted downward, and the first bottom plate 135 and the back plate 134 are arranged at an obtuse angle. In order to prevent the first bottom plate 135 from blocking the camera 14, the first bottom plate 135 is tilted downward in a direction away from the back plate 134. Specifically, the back plate 134 is provided with a mounting column 1341 and a card slot 1342, the bottom end of the camera 14 is inserted into the card slot 1342, and the camera 14 is fixedly connected to the mounting column 1341, so that the camera 14 is fixed to the bracket 13 to ensure the temperature of the camera 14.

[0068] In this embodiment, the bracket 13 further includes a shading plate 137, which is respectively connected to the first bottom plate 135 and the side plate 136. The shading plate 137 can be blocked between the first bottom plate 135 and the side plate 136 of the bracket 13, and can block stray light in the external environment to avoid affecting the shooting effect of the camera 14.

[0069] Furthermore, a second bottom plate 132 is provided at the bottom of the back plate 134, and the first bottom plate 135 and the shading plate 137 are both connected to the second bottom plate 132. At this time, the first bottom plate 135 and the shading plate 137 form an open structure that semi-surrounds the camera 14, which can not only play a role in shading, but also avoid the shooting range of the camera 14 to the maximum extent.

[0070] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A cooking utensil, characterized in that: include: A door assembly (1), comprising a door body (11), the door body (11) comprising a door panel (111) and a heat insulation board (112), the door panel (111) and the heat insulation board (112) being arranged at intervals to form a gas channel (12) between the door panel (111) and the heat insulation board (112) and a first air inlet (113) and a first air outlet (114) connected to the gas channel (12), a heat insulation space being arranged inside the heat insulation board (112), and a gas concentration in the heat insulation space being lower than a gas concentration in the air outside the heat insulation board (112); A box body (2), the box body (2) being provided with an opening (21), the door body (11) being hinged to the box body (2) to open or close the opening (21), the box body (2) comprising a heat dissipation pipeline (22) and a second air inlet (224) and a second air outlet (225) connected to the heat dissipation pipeline (22), a fan (23) being provided in the heat dissipation pipeline (22), and the first air outlet (114) being connected to the second air inlet (224).

2. The cooking device according to claim 1, characterized in that: The thickness of the heat insulation board (112) is 25% to 30% of the thickness of the door body (11).

3. The cooking device according to claim 2, characterized in that: The heat insulation board (112) is arranged on a side of the door body (11) close to the opening (21); when the door body (11) closes the opening (21), the heat insulation board (112) is in sealing contact with the box body (2).

4. The cooking device according to claim 2, characterized in that: The door assembly (1) further comprises a camera (14), wherein the camera is arranged in the gas passage (12), the heat insulation board (112) has a transparent area, and the camera (14) can capture images through the transparent area.

5. The cooking device according to claim 4, characterized in that: The door assembly (1) further comprises a bracket (13), wherein the bracket (13) is arranged in the gas passage (12), the bracket (13) comprises a cavity and two connecting ports (131) connected to the cavity and arranged opposite to each other, and the camera (14) is arranged in the cavity.

6. The cooking device according to claim 5, characterized in that: The bracket (13) is located above the door body (11), and the bracket (13) includes a back plate (134) and a first bottom plate (135), wherein the first bottom plate (135) is connected to the bottom end of the back plate (134), and the camera (14) is arranged on the back plate (134) and tilted downward, and the first bottom plate (135) and the back plate (134) are arranged at an obtuse angle.

7. The cooking device according to any one of claims 2 to 6, characterized in that: The door assembly (1) further comprises a support frame (15), wherein the support frame (15) is arranged between the door panel (111) and the heat insulation board (112), wherein the door panel (111), the heat insulation board (112) and the support frame (15) enclose the gas channel (12), and the support frame (15) is provided with a first air inlet (113) and a first air outlet (114) which are in communication with the gas channel (12).

8. The cooking device according to claim 7, characterized in that: The support frame (15) comprises two vertical portions (151) arranged at intervals in the horizontal direction and a horizontal portion (152) respectively connected to the two vertical portions (151); the first air inlet (113) is formed between the bottom ends of the two vertical portions (151); and the first air outlet (114) is opened in the horizontal portion (152).

9. The cooking device according to claim 8, characterized in that: The horizontal portion (152) comprises a connected transverse plate (1521) and a vertical plate (1522); the transverse plate (1521) is respectively connected to the top ends of the two vertical portions (151); the vertical plate (1522) is located on a side of the two vertical portions (151) away from the door panel (111) and is connected to the heat insulation board (112); and the first air outlet (114) is provided on the vertical plate (1522).

10. The cooking device according to any one of claims 1 to 6, characterized in that: The second air outlet (225) is located above the communication position between the first air outlet (114) and the second air inlet (224), and the opening position of the second air outlet (225) is located in front of the communication position between the first air outlet (114) and the second air inlet (224).

Images