Hot air structure and cooking utensil

Abstract

The embodiment of the utility model provides a hot air structure and a cooking utensil. The hot air structure comprises a cavity and a hot air assembly. The cavity is provided with a cavity, the outer surface of one side of the cavity is provided with an exhaust hole communicated with the cavity, at least the area where the exhaust hole is located of the cavity is sunken towards the side close to the cavity to form a first sunken cavity, and the hot air assembly is arranged on the side, provided with the first sunken cavity, of the cavity. The hot air assembly comprises a heating part, a fan and a driving part, the driving part is in driving connection with the fan, and at least partial areas of the heating part and the fan are located in the first concave cavity. According to the hot air structure, the boundary dimension can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to a hot air structure and a cooking utensil. Background Art

[0002] In the related art, the cooking appliance has a hot air structure, and the fan is driven by a motor to rotate, so that the heat generated by the heating tube can be brought into the cooking cavity, thereby achieving a cooking effect.

[0003] However, in the related art, the motor, fan and heating pipe are directly stacked on the outside of the cavity, which increases the size of the hot air structure and makes the cooking appliance thick and heavy. Utility Model Content

[0004] In view of this, the main purpose of the embodiments of the present application is to provide a hot air structure and a cooking utensil that can reduce the external dimensions.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] A first aspect of an embodiment of the present application provides a hot air structure, comprising:

[0007] A cavity having a cavity, wherein an outer surface of one side of the cavity has an exhaust hole connected to the cavity, and at least a region of the cavity where the exhaust hole is located is recessed toward a side close to the cavity to form a first recessed cavity;

[0008] A hot air component is arranged on a side of the cavity having the first recessed cavity, the hot air component includes a heat generating element, a fan and a driving element, the driving element is drivingly connected to the fan, and at least part of the heat generating element and the fan are located in the first recessed cavity.

[0009] In one embodiment, the heating element is arranged on the peripheral side of the fan so as to be in the same plane as the fan; and / or,

[0010] The top side of the cavity is provided with the first recessed cavity, and the hot air component is arranged on the top side of the cavity.

[0011] In one embodiment, the hot air assembly includes a heat insulation cover, which is arranged in an area of ​​the cavity having the first recessed cavity, the heat generating element and the fan are located on a side of the heat insulation cover close to the first recessed cavity, the driving element is located on a side of the heat insulation cover away from the first recessed cavity, and a driving shaft of the driving element passes through the heat insulation cover to be drivingly connected to the fan.

[0012] In one embodiment, the heat insulation cover includes a first cover body and a second cover body which are spaced apart from each other in at least a partial area, and the second cover body is located on a side of the first cover body which is away from the first recessed cavity.

[0013] In one embodiment, the heat insulation cover further includes heat insulation cotton located in the interval space between the first cover body and the second cover body.

[0014] In one embodiment, a partial area of ​​the first cover body is recessed toward a side close to the second cover body to form a first boss having a second recessed cavity, the second recessed cavity is located on a side of the first boss close to the first recessed cavity, and is connected to the first recessed cavity to jointly accommodate the heat generating element and the fan, and an area of ​​the second cover body close to the first boss is recessed toward a side away from the first boss to form a second boss having a first avoidance cavity.

[0015] In one embodiment, a partial area of ​​the second boss is recessed toward a side close to the first avoidance cavity to form a first raised portion having a third recessed cavity, the third recessed cavity is located on a side of the first raised portion away from the first cover body, at least a partial area of ​​the driving member is installed in the third recessed cavity, and an area of ​​the first boss close to the first raised portion is recessed toward a side away from the first raised portion to form a second raised portion having a second avoidance cavity.

[0016] In one embodiment, the outer surface of the cavity has a first fitting area, the first fitting area is arranged along the outer edge of the first recessed cavity, and the side of the heat insulation cover close to the cavity has a second fitting area, the second fitting area corresponds to the first fitting area and is interference fit.

[0017] In one embodiment, the outer surface of the cavity also has a first separation area and a third fitting area, the first separation area is arranged around the outer peripheral side of the first fitting area, the third fitting area is arranged around the outer peripheral side of the first separation area, the heat insulation cover also has a second separation area arranged around the outer peripheral side of the second fitting area, and a fourth fitting area arranged around the outer peripheral side of the second separation area, at least one of the first separation area and the second separation area is recessed toward a side away from the other to separate and form a heat insulation space, and the third fitting area and the fourth fitting area are correspondingly fitted.

[0018] A second aspect of an embodiment of the present application provides a cooking utensil, comprising any of the hot air structures described above, wherein the cavity is a cooking cavity.

[0019] The embodiment of the present application provides a hot air structure and a cooking utensil, wherein the hot air structure comprises a cavity and a hot air component, wherein the outer surface of one side of the cavity has an exhaust hole connected to the cavity, wherein at least the area where the exhaust hole is located is recessed toward the side close to the cavity to form a first recessed cavity, and at least part of the heating element and the fan of the hot air component are located in the first recessed cavity. Thus, at least part of the area of ​​the hot air component can be arranged in the first recessed cavity to reduce the distance between the hot air component and the cavity, thereby reducing the overall external dimensions of the hot air structure to prevent the cooking utensil from becoming heavy due to excessive size as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a hot air structure according to an embodiment of the present application;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure in which the middle cavity and the hot air component are separated;

[0022] Figure 3 for Figure 1 A cross-sectional view of the medium hot air structure;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0024] Figure 5 for Figure 4 A partial enlarged view of the hot air component;

[0025] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0026] Figure 7 for Figure 2 Exploded view of the hot air assembly;

[0027] Figure 8 for Figure 2 Schematic diagram of the structure of the hot air component;

[0028] Fig. 9 for Figure 8 Rear view of

[0029] Fig.10 for Figure 8 A cross-sectional view of a hot air assembly;

[0030] Fig.11 for Fig.10 A schematic diagram of the structure from another perspective;

[0031] Fig.12 for Figure 7 A schematic structural diagram of the first cover body;

[0032] Fig.13 for Fig.12 Rear view;

[0033] Fig.14 for Figure 7 A schematic diagram of the structure of the second cover body;

[0034] Fig.15 for Fig.14 Rear view.

[0035] Description of Reference Numerals

[0036] 10. Cavity; 10a. Cavity; 10b. Exhaust hole; 10c. First recessed cavity; 11. First fitting area; 12. First partition area; 13. Third fitting area; 20. Hot air assembly; 21. Heat generating element; 22. Fan; 23. Driving element; 24. Heat insulation cover; 241. First cover body; 2411. First boss; 241a. Second recessed cavity; 2412. Second raised portion; 241b. Second avoidance cavity; 242. Second cover body; 2421. Second boss; 242a. First avoidance cavity; 2422. First raised portion; 242b. Third recessed cavity; 243. Heat insulation cotton; 244. Second fitting area; 245. Second partition area; 245a. Heat insulation space; 246. Fourth fitting area. DETAILED DESCRIPTION

[0037] In this application, the "top" and "bottom" positions or positional relationships are based on the attached Figure 1 It should be understood that these directional terms are only for the convenience of describing the present application 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 limiting the present application.

[0038] An embodiment of the present application provides a hot air structure, see Figure 1 and Figure 2 , including a cavity 10 and a hot air assembly 20, the cavity 10 has a cavity 10a, and the outer surface of one side of the cavity 10 has an exhaust hole 10b connected to the cavity 10a, and the cavity 10 is at least recessed toward the side close to the cavity 10a in the area where the exhaust hole 10b is located to form a first recessed cavity 10c.

[0039] The hot air component 20 is arranged on one side of the cavity 10 having a first recessed cavity 10c. The hot air component 20 includes a heating element 21, a fan 22 and a driving element 23. The driving element 23 is driven and connected to the fan 22. At least part of the heating element 21 and the fan 22 are located in the first recessed cavity 10c.

[0040] Another embodiment of the present application provides a cooking utensil, comprising the hot air structure described in any embodiment of the present application, wherein the cavity 10a is a cooking cavity.

[0041] Specifically, the cooking utensil may be any type of cooking device having a cooking cavity and a hot air structure, for example, the cooking utensil may be a separate microwave oven, oven, steamer or rice cooker, or a microwave oven-steamer-oven all-in-one machine.

[0042] The hot air structure can be used in cooking utensils, and can also be used in other devices according to actual conditions. For the convenience of description, the present application takes the hot air structure used in cooking utensils, and the cavity 10a is a cooking cavity as an example for description.

[0043] Specifically, the cavity 10a can be used to hold food, and the exhaust hole 10b is used to allow the hot air flow generated by the hot air component 20 to pass through, so as to cook the food placed in the cavity 10a.

[0044] The outer surface of one side of the cavity 10 has an exhaust hole 10b, and the outer surface with the exhaust hole 10b can be entirely recessed to form a first recessed cavity 10c. According to actual conditions, if only a partial area of ​​the outer surface has the exhaust hole 10b, only the area with the exhaust hole 10b can be recessed to form the first recessed cavity 10c.

[0045] Among them, being recessed toward the side close to the cavity 10a means that the area located at the first recessed cavity 10c is recessed relative to other areas of the outer surface of the cavity 10, that is, closer to the side of the cavity 10a, thereby facilitating the installation of a partial area of ​​the hot air component 20 into the first recessed cavity 10c, so as to reduce the size of the hot air structure.

[0046] The specific position of the first recessed cavity 10c on the cavity 10 can be set according to actual conditions, and it can be on the top side or bottom side of the cavity 10. For example, the top side of the cavity 10 has the first recessed cavity 10c, and the hot air assembly 20 is arranged on the top side of the cavity 10.

[0047] The heating element 21 can generate heat by generating heat, and its specific shape and structure are not limited. For example, the heating element 21 is a heating tube.

[0048] The driving member 23 can drive the fan 22 to rotate to generate airflow, thereby driving the heat generated by the heating element 21 into the cavity 10a to heat the food in the cavity 10a.

[0049] The specific type of the driving member 23 is not limited, for example, the driving member 23 is a driving motor.

[0050] At least part of the area of ​​the heating element 21 and the fan 22 is located in the first recessed cavity 10c. According to different arrangements of the heating element 21 and the fan 22, only part of the area or the whole area of ​​the heating element 21 may be located in the first recessed cavity 10c, only part of the area or the whole area of ​​the fan 22 may be located in the first recessed cavity 10c, or both part of the area of ​​the heating element 21 and the fan 22 may be located in the first recessed cavity 10c.

[0051] In addition, the relative position relationship between the heating element 21 and the fan 22 can be set according to actual conditions.

[0052] For example, see Figures 3 to 5 The heat generating element 21 is arranged on the peripheral side of the fan 22 so as to be in the same plane as the fan 22 .

[0053] Specifically, the heating element 21 and the fan 22 are not spaced apart from each other. The heating element 21 is arranged on the peripheral side of the fan 22, which can better utilize the lateral space of the fan 22 without occupying the axial space of the fan 22. This can make the hot air assembly 20 flatter and further reduce the external dimensions of the hot air structure.

[0054] It should be noted that the fact that the heating element 21 and the fan 22 are in the same plane does not mean that the heating element 21 and the fan 22 are both arranged in the plane, but that the heating element 21 can utilize the space around the fan 22 for installation.

[0055] For example, the heating element 21 is a heating pipe, and the heating pipe is arranged around the circumference of the fan 22 .

[0056] In the related art, in order to reduce the size of the cooking appliance, the heating tube is separated from the fan and the driving member and placed directly in the cavity containing the cooking ingredients. However, this arrangement reduces the maximum temperature of the cooking appliance and fails to circulate hot air, which reduces the cooking effect.

[0057] The hot air structure of the embodiment of the present application includes a cavity 10 and a hot air component 20. The outer surface of one side of the cavity 10 has an exhaust hole 10b connected to the cavity 10a. At least the area where the exhaust hole 10b is located in the cavity 10 is recessed toward the side close to the cavity 10a to form a first recessed cavity 10c. At least part of the heating element 21 and the fan 22 of the hot air component 20 are located in the first recessed cavity 10c. Thus, at least part of the area of ​​the hot air component 20 can be set in the first recessed cavity 10c to reduce the distance between the hot air component 20 and the cavity 10, so that the overall size of the hot air structure can be reduced to avoid the cooking utensil from becoming heavy due to excessive size as much as possible. In addition, the heating element 21 is not separated from the fan 22 to be placed in the cavity 10a, so it does not reduce the maximum temperature of the cooking utensil, which can be conducive to the circulation of hot air flow in the closed space and improve the cooking effect.

[0058] In one embodiment, please refer to Figures 7 to 9 The hot air assembly 20 includes a heat insulation cover 24, which is arranged in the area of ​​the cavity 10 having the first recessed cavity 10c. The heating element 21 and the fan 22 are located on the side of the heat insulation cover 24 close to the first recessed cavity 10c. The driving element 23 is located on the side of the heat insulation cover 24 away from the first recessed cavity 10c. The driving shaft of the driving element 23 passes through the heat insulation cover 24 to be driven and connected with the fan 22.

[0059] Specifically, the heat shield 24 can play a heat insulation effect. On the one hand, it can make the heat generated by the heating element 21 flow more with the airflow generated by the fan 22, so as to enter the cavity 10a through the exhaust hole 10b, thereby preventing heat loss. Therefore, the heat generated by the heating element 21 can directly enter the cavity 10a with minimal heat loss to heat the food, thereby achieving a fast cooking effect. On the other hand, the heat shield 24 can also separate the driving element 23 from the heating element 21, so as to prevent the heat generated by the heating element 21 from being transferred to the driving element 23, causing the driving element 23 to be overheated and damaged.

[0060] It can be understood that the heat shield 24 has a through hole for the driving shaft of the driving member 23 to pass through, so as to drive the fan 22 to rotate to generate airflow.

[0061] In one embodiment, please refer to Figure 5 and Figure 7 The heat insulation cover 24 includes a first cover body 241 and a second cover body 242 which are spaced apart from each other in at least a partial area. The second cover body 242 is located on a side of the first cover body 241 away from the first recessed cavity 10c.

[0062] Specifically, the first cover 241 and the second cover 242 may be separated only in some areas, or may be separated in all areas. Due to the formation of the separation space, the heat generated by the heating element 21 needs to pass through the first cover 241, the air layer in the separation space, and the second cover 242 in the process of being transferred toward the driving element 23 to the outside, which can make the heat insulation effect of the heat insulation cover 24 better.

[0063] In addition, in order to further enhance the heat insulation effect of the heat insulation cover 24 to prevent the driver 23 from overheating, a heat insulation material may be arranged in the space. Figure 7 The heat insulation cover 24 also includes a heat insulation cotton 243 located in the interval space between the first cover body 241 and the second cover body 242.

[0064] In one embodiment, please refer to Figures 10 to 15 Part of the area of ​​the first cover body 241 is recessed toward the side close to the second cover body 242 to form a first boss 2411 having a second recessed cavity 241a. The second recessed cavity 241a is located on the side of the first boss 2411 close to the first recessed cavity 10c, and is connected to the first recessed cavity 10c to jointly accommodate the heat generating element 21 and the fan 22. The area of ​​the second cover body 242 close to the first boss 2411 is recessed toward the side away from the first boss 2411 to form a second boss 2421 having a first avoidance cavity 242a.

[0065] Specifically, in order to avoid the first recessed cavity 10c from being too recessed and occupying too much space in the cavity 10a for installing the heat generating component 21 and the fan 22, a partial area of ​​the outer surface of the first cover body 241 close to the first recessed cavity 10c can be recessed to form a second recessed cavity 241a, which can be combined with the first recessed cavity 10c of the cavity body 10 to form an installation cavity for installing the heat generating component 21 and the fan 22.

[0066] It is understandable that, since the first cover 241 is recessed toward the side close to the second cover 242 for mounting the heating element 21 and the fan 22, the back side of the recess is inevitably protruding relative to other areas, i.e., forming a first boss 2411. In other words, the side of the first boss 2411 close to the first recessed cavity 10c is the second recessed cavity 241a, and the side away from the first recessed cavity 10c is a step surface.

[0067] In addition, since the first boss 2411 is formed, in order to maintain the relative distance between the first cover body 241 and the second cover body 242 to avoid the second cover body 242 interfering with the formation of the first boss 2411, the corresponding positions of the second cover body 242 and the first boss 2411 also need to be synchronously recessed to form a first avoidance cavity 242a, thereby avoiding the formation of the first boss 2411.

[0068] It is understandable that by only forming the first boss 2411 and the corresponding second boss 2421 by depression, the thickness of the heat shield 24 can be increased only at the first boss 2411 and the second boss 2421, while other areas can maintain a relatively thin thickness, thereby minimizing the external dimensions of the hot air structure.

[0069] In addition, according to the spacing requirement of the interval space between the first cover body 241 and the second cover body 242, a part of the first boss 2411 may extend into the first avoidance cavity 242a, or the entire first boss 2411 may not extend into the first avoidance cavity 242a.

[0070] In one embodiment, please refer to Figures 10 to 15 , a partial area of ​​the second boss 2421 is recessed toward the side close to the first avoidance cavity 242a to form a first protruding portion 2422 having a third recessed cavity 242b, the third recessed cavity 242b is located on the side of the first protruding portion 2422 away from the first cover body 241, at least a partial area of ​​the driving member 23 is installed in the third recessed cavity 242b, and the area of ​​the first boss 2411 close to the first protruding portion 2422 is recessed toward the side away from the first protruding portion 2422 to form a second protruding portion 2412 having a second avoidance cavity 241b.

[0071] Specifically, in order to further reduce the external dimensions of the hot air assembly 20, a portion of the second boss 2421 may be recessed toward a side close to the first avoidance cavity 242a so as to allow the driving member 23 to extend therein.

[0072] According to actual conditions, a partial area of ​​the driving member 23 may extend into the third recessed cavity 242b, or the entire area may be installed in the third recessed cavity 242b.

[0073] Correspondingly, since the first protrusion 2422 is formed, in order to avoid the first boss 2411 interfering with the formation of the first protrusion 2422, the area corresponding to the first boss 2411 and the first protrusion 2422 also needs to be recessed toward the side away from the first protrusion 2422 to form a second avoidance cavity 241b for avoiding the first protrusion 2422.

[0074] It can be understood that the recessed direction of the second recessed cavity 241a is the same as the recessed direction of the first avoidance cavity 242a, the recessed direction of the third recessed cavity 242b is the same as the recessed direction of the second avoidance cavity 241b, and the recessed direction of the second recessed cavity 241a is opposite to the recessed direction of the second avoidance cavity 241b.

[0075] In one embodiment, please refer to Figure 6The outer surface of the cavity 10 has a first bonding area 11, and the first bonding area 11 is arranged along the outer edge of the first recessed cavity 10c. The heat insulation cover 24 has a second bonding area 244 on the side close to the cavity 10, and the second bonding area 244 corresponds to the first bonding area 11 and is interference fit.

[0076] Specifically, the cavity 10 and the heat insulation cover 24 are separated from each other at the first recessed cavity 10c, and are bonded to each other at the first bonding area 11 and the second bonding area 244, thereby achieving a better heat insulation effect in the first recessed cavity 10c.

[0077] In addition, the second fitting area 244 and the first fitting area 11 can be tightened by bolts to achieve an interference fit.

[0078] The first bonding area 11 is an area extending around the outer circumference of the first recessed cavity 10 c , and the second bonding area 244 is an area on the heat shield 24 corresponding to the first bonding area 11 .

[0079] In one embodiment, please refer to Figure 6 The outer surface of the cavity 10 also has a first partition area 12 and a third bonding area 13. The first partition area 12 is arranged around the outer peripheral side of the first bonding area 11, and the third bonding area 13 is arranged around the outer peripheral side of the first partition area 12. The heat insulation cover 24 also has a second partition area 245 arranged around the outer peripheral side of the second bonding area 244, and a fourth bonding area 246 arranged around the outer peripheral side of the second partition area 245. At least one of the first partition area 12 and the second partition area 245 is recessed toward a side away from the other to separate and form a heat insulation space 245a. The third bonding area 13 and the fourth bonding area 246 are bonded correspondingly.

[0080] Specifically, a first separation area 12 can also be formed along the outer peripheral side of the first bonding area 11, and a second separation area 245 corresponding to the first separation area 12 can be formed on the heat insulation cover 24, thereby separating the first separation area 12 and the second separation area 245 from each other to form an insulation space 245a, which can further enhance the insulation effect.

[0081] It should be noted that due to the formation of the heat insulating space 245a, when the heat generated by the heating element 21 is transferred along the extension direction of the outer surface of the cavity 10, it needs to pass through the first bonding area 11, the heat insulating space 245a and then the third bonding area 13, thereby reducing the heat transfer efficiency to improve the heat insulation effect.

[0082] In addition, the third bonding area 13 on the outer peripheral side of the first partition area 12 and the fourth bonding area 246 on the outer peripheral side of the second partition area 245 are bonded to each other, which can also improve the heat insulation effect.

[0083] The specific separation form of the first separation area 12 and the second separation area 245 is not limited, and can be recessed toward one side to form a groove structure spaced apart from each other to achieve a heat insulation effect.

[0084] In a specific embodiment, the hot air assembly 20 is disposed on the top side of the cavity 10 , and the overall height dimension of the hot air structure along the top-to-bottom direction is only 53 mm, and the heat generated by the heating element 21 can reach 230° C.

[0085] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0086] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A hot air structure, characterized in that: include: A cavity having a cavity, wherein an outer surface of one side of the cavity has an exhaust hole connected to the cavity, and at least a region of the cavity where the exhaust hole is located is recessed toward a side close to the cavity to form a first recessed cavity; A hot air component is arranged on a side of the cavity having the first recessed cavity, the hot air component includes a heat generating element, a fan and a driving element, the driving element is drivingly connected to the fan, and at least part of the heat generating element and the fan are located in the first recessed cavity.

2. The hot air structure according to claim 1, characterized in that: The heating element is arranged on the peripheral side of the fan so as to be in the same plane as the fan; and / or, The top side of the cavity is provided with the first recessed cavity, and the hot air component is arranged on the top side of the cavity.

3. The hot air structure according to claim 1 or 2, characterized in that: The hot air assembly includes a heat insulation cover, which is arranged in an area of ​​the cavity having the first recessed cavity. The heat generating element and the fan are located on a side of the heat insulation cover close to the first recessed cavity. The driving element is located on a side of the heat insulation cover away from the first recessed cavity. The driving shaft of the driving element passes through the heat insulation cover to be drivingly connected to the fan.

4. The hot air structure according to claim 3, characterized in that: The heat insulation cover comprises a first cover body and a second cover body which are spaced apart from each other in at least a partial area, and the second cover body is located at a side of the first cover body which is away from the first recessed cavity.

5. The hot air structure according to claim 4, characterized in that: The heat insulation cover also includes heat insulation cotton located in the interval space between the first cover body and the second cover body.

6. The hot air structure according to claim 4, characterized in that: A partial area of ​​the first cover body is recessed toward a side close to the second cover body to form a first boss having a second recessed cavity, the second recessed cavity is located on a side of the first boss close to the first recessed cavity, and is connected to the first recessed cavity to jointly accommodate the heat generating element and the fan, and an area of ​​the second cover body close to the first boss is recessed toward a side away from the first boss to form a second boss having a first avoidance cavity.

7. The hot air structure according to claim 6, characterized in that: A partial area of ​​the second boss is recessed toward a side close to the first avoidance cavity to form a first protruding portion having a third recessed cavity, the third recessed cavity is located on a side of the first protruding portion away from the first cover body, at least a partial area of ​​the driving member is installed in the third recessed cavity, and an area of ​​the first boss close to the first protruding portion is recessed toward a side away from the first protruding portion to form a second protruding portion having a second avoidance cavity.

8. The hot air structure according to claim 3, characterized in that: The outer surface of the cavity has a first fitting area, which is arranged along the outer edge of the first recessed cavity. The heat insulation cover has a second fitting area on a side close to the cavity, which is correspondingly fitted with the first fitting area and has an interference fit.

9. The hot air structure according to claim 8, characterized in that: The outer surface of the cavity also has a first separation area and a third bonding area, the first separation area is arranged around the outer peripheral side of the first bonding area, the third bonding area is arranged around the outer peripheral side of the first separation area, the heat insulation cover also has a second separation area arranged around the outer peripheral side of the second bonding area, and a fourth bonding area arranged around the outer peripheral side of the second separation area, at least one of the first separation area and the second separation area is recessed toward the side away from the other to separate and form a heat insulation space, and the third bonding area and the fourth bonding area are correspondingly bonded.

10. A cooking utensil, characterized in that: It comprises the hot air structure according to any one of claims 1 to 9, wherein the cavity is a cooking cavity.

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