Hot air structure and cooking tool

Abstract

To provide a hot air structure and a cooking tool in which an outer dimension can be reduced.SOLUTION: An example of the present disclosure provides a hot air structure and a cooking tool, the hot air structure having a cavity and a hot air unit. The cavity has a hollow, and an air discharge hole communicated with the hollow is located on an outer face on one side of the cavity. At least a region of the cavity in which the air discharge hole is positioned is recessed toward a side closer to the hollow so as to form a first recessed chamber. The hot air unit is provided on the side having the first recessed chamber of the cavity, and the hot air unit includes a heating member, a fan, and a drive member. The drive member is drivingly connected to the fan, and at least a part of a region of the heating member and the fan includes a hot air unit positioned in the first recessed chamber.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooking appliances, and particularly to a hot air structure and a cooking appliance.

Background Art

[0002] In related technologies, a cooking appliance has a hot air structure. By driving a motor so that a fan rotates, heat generated from a heating tube can be taken into a cooking chamber, and a cooking effect can be achieved.

[0003] However, in related technologies, a motor, a fan, and a heating tube are directly stacked outside a cavity. Therefore, the outer dimensions of the hot air structure become large, and the cooking appliance becomes thick and heavy.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the above, the main object of the embodiments of the present disclosure is to provide a hot air structure and a cooking appliance that can reduce the outer dimensions.

Means for Solving the Problems

[0005] To achieve the above object, the technical solution of the embodiments of the present disclosure is realized as follows.

[0006] In a first aspect of the embodiments of the present disclosure, a hot air structure is provided, and the hot air structure includes a cavity having a hollow, on an outer surface of one side, there is an exhaust hole communicating with the hollow, and at least a region where the exhaust hole is located is recessed toward a side close to the hollow so as to form a first recessed chamber, a cavity, A hot air unit provided on the side of the cavity having the first concave portion chamber, comprising a heating member, a fan, and a drive member, wherein the drive member is drivingly connected to the fan, and at least a part of the regions of the heating member and the fan are located within the first concave portion chamber, and the hot air unit.

[0007] In one embodiment, the heating member is provided on the circumferential side of the fan so as to be located in the same plane as the fan, and / or On the top side of the cavity, there is the first concave portion chamber, and the hot air unit is provided on the top side of the cavity.

[0008] In one embodiment, the hot air unit includes a heat insulation cover that covers the region of the cavity having the first concave portion chamber, the heating member and the fan are located on the side closer to the first concave portion chamber of the heat insulation cover, the drive member is located on the side away from the first concave portion chamber of the heat insulation cover, and the drive shaft of the drive member penetrates the heat insulation cover so as to be drivingly connected to the fan.

[0009] In one embodiment, the heat insulation cover includes a first cover body and a second cover body provided at intervals in at least a part of the region, and the second cover body is located on the side away from the first concave portion chamber of the first cover body.

[0010] In one embodiment, the heat insulation cover further includes a heat insulating material located in the interval space between the first cover body and the second cover body.

[0011] In one embodiment, a part of the region of the first cover body is recessed toward the side close to the second cover body so as to form a first boss having a second recess chamber. The second recess chamber is located on the side close to the first recess chamber of the first boss, and communicates with the first recess chamber so as to jointly accommodate the heat generating member and the fan. The region of the second cover body close to the first boss is recessed toward the side away from the first boss so as to form a second boss having a first avoidance chamber.

[0012] In one embodiment, a part of the region of the second boss is recessed toward the side close to the first avoidance chamber so as to form a first protrusion having a third recess chamber. The third recess chamber is located on the side away from the first cover body of the first protrusion, at least a part of the driving member is mounted in the third recess chamber, and the region of the first boss close to the first protrusion is recessed toward the side away from the first protrusion so as to form a second protrusion having a second avoidance chamber.

[0013] In one embodiment, on the outer surface of the cavity, there is a first bonding area surrounded along the outer peripheral edge of the first recess chamber. On the side of the heat insulation cover close to the cavity, there is a second bonding area that corresponds to and bonds and is press-fitted to the first bonding area.

[0014] In one embodiment, the outer surface of the cavity further has a first partition area and a third bonding area. The first partition area is surrounded on the outer peripheral side of the first bonding area, the third bonding area is surrounded on the outer peripheral side of the first partition area, the heat insulation cover further has a second partition area surrounded on the outer peripheral side of the second bonding area and a fourth bonding area surrounded on the outer peripheral side of the second partition area. At least one of the first partition area and the second partition area is recessed toward the side away from the other so as to separate and form a heat insulation space. The third bonding area and the fourth bonding area are correspondingly bonded.

[0015] In a second aspect of an embodiment of the present disclosure, a cooking appliance is provided, the cooking appliance includes the hot air structure described in any of the above, and the cavity is a cooking chamber.

[0016] Embodiments of the present disclosure provide a hot air structure and a cooking appliance. The hot air structure includes a cavity and a hot air unit. On an outer surface of one side of the cavity, there is an exhaust hole communicating with the cavity. At least a region of the cavity where the exhaust hole is located is recessed toward the side close to the cavity so as to form a first recess chamber. At least a partial region of the heating member and the fan of the hot air unit is located in the first recess chamber. In this way, by providing at least a partial region of the hot air unit in the first recess chamber, the distance between the hot air unit and the cavity can be reduced, so that the overall external dimensions of the hot air structure can be reduced, and it is possible to avoid as much as possible that the dimensions of the cooking appliance are too large, thick, and heavy.

Brief Description of the Drawings

[0017]

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Embodiments for Carrying Out the Invention

[0018] In the present disclosure, the orientation or positional relationship of "top" and "bottom" is based on the orientation or positional relationship shown in FIG. 1. It should be understood that these orientation terms are only for facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the specified device or element must have a specific orientation and must be configured and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present disclosure.

[0019] One embodiment of the present disclosure provides a hot air structure. Referring to FIGS. 1 and 2, it includes a cavity 10 and a hot air unit 20. The cavity 10 has a cavity 10a. On the outer surface of one side of the cavity 10, there is an exhaust hole 10b communicating with the cavity 10a. At least the region where the exhaust hole 10b of the cavity 10 is located is recessed toward the side close to the cavity 10a so as to form a first recess chamber 10c.

[0020] The hot air unit 20 is provided on the side of the cavity 10 having the first recess chamber 10c. The hot air unit 20 includes a heating member 21, a fan 22, and a driving member 23. The driving member 23 is drivingly connected to the fan 22. At least a part of the regions of the heating member 21 and the fan 22 are located within the first recess chamber 10c.

[0021] Another embodiment of the present disclosure provides a cooking appliance. The cooking appliance includes the hot air structure described in any embodiment of the present disclosure, and the cavity 10a is a cooking chamber.

[0022] Specifically, the cooking appliance may be any type of cooking appliance having a cooking chamber and a hot air structure. For example, the cooking appliance may be an independent microwave oven, oven, electric steamer, or rice cooker, or may be an integrated machine of a microwave oven - electric steamer - oven.

[0023] The hot air structure may be used in the cooking appliance, or may be used in other devices according to the actual situation. For the sake of easy explanation, in the present disclosure, the case where the hot air structure is used in the cooking appliance and the cavity 10a is the cooking chamber will be described as an example.

[0024] Specifically, the cavity 10a can be used to accommodate food ingredients, and the exhaust hole 10b is used to allow the hot air flow generated by the hot air unit 20 to pass through in order to cook the food ingredients placed in the cavity 10a.

[0025] One outer surface of the cavity 10 may have the exhaust hole 10b, and the entire outer surface having the exhaust hole 10b may be recessed to form the first recess chamber 10c. According to the actual situation, when only a partial region of this outer surface has the exhaust hole 10b, only the region having the exhaust hole 10b may be recessed to form the first recess chamber 10c.

[0026] Here, being recessed toward the side close to the cavity 10a means that the region located in the first recess chamber 10c is recessed with respect to other regions of the outer surface of the cavity 10, that is, it is closer to the cavity 10a side. Thereby, a part of the hot air unit 20 can be easily installed in the first recess chamber 10c so as to have the effect of reducing the size of the hot air structure.

[0027] The specific position of the first recess chamber 10c in the cavity 10 can be set according to the actual situation, and may be provided on the top side or the bottom side of the cavity 10. For example, the top side of the cavity 10 has the first recess chamber 10c, and the hot air unit 20 is provided on the top side of the cavity 10.

[0028] The heating member 21 can generate heat by heating, and its specific shape and structure are not limited. For example, the heating member 21 is a heating tube.

[0029] The driving member 23 can drive the fan 22 to rotate to generate an air flow, thereby sending the heat generated by the heating member 21 into the cavity 10a and heating the food in the cavity 10a.

[0030] The specific type of the driving member 23 is not limited. For example, the driving member 23 is a driving motor.

[0031] At least a part of the regions of the heating member 21 and the fan 22 is located in the first concave chamber 10c. Depending on the installation method of the heating member 21 and the fan 22, only a part of the regions or all of the regions of the heating member 21 may be located in the first concave chamber 10c, or only a part of the regions or all of the regions of the fan 22 may be located in the first concave chamber 10c, or both a part of the regions or all of the regions of the heating member 21 and the fan 22 may be located in the first concave chamber 10c.

[0032] In addition, the relative positional relationship between the heating member 21 and the fan 22 can be set according to the actual situation.

[0033] For example, referring to FIGS. 3 to 5, the heating member 21 is provided on the circumferential side of the fan 22 so as to be located in the same plane as the fan 22.

[0034] Specifically, the heating member 21 and the fan 22 are not provided at intervals in the front-rear direction. By providing the heating member 21 on the circumferential side of the fan 22, the space in the axial direction of the fan 22 can be better utilized without occupying the space in the axial direction of the fan 22, the hot air unit 20 can be made flatter, and the outer dimensions of the hot air structure can be further reduced.

[0035] It should be noted that the fact that the heating member 21 is located in the same plane as the fan 22 does not mean that both the heating member 21 and the fan 22 are provided in the plane, but rather means that the heating member 21 can be mounted using the space on the circumferential side of the fan 22.

[0036] For example, the heating member 21 is a heating tube (heat pipe), and the heating tube is provided so as to surround the circumferential side of the fan 22.

[0037] In the related art, in order to reduce the external dimensions of the cooking appliance, the heating tube is separated from the fan and the driving member respectively, so that the heating tube is directly arranged in the cavity for accommodating the cooking ingredients. However, in such an installation method, the maximum temperature of the cooking appliance is reduced and hot air cannot be circulated, resulting in a reduction in the cooking effect.

[0038] The hot air structure of the embodiment of the present disclosure includes a cavity 10 and a hot air unit 20. On the outer surface of one side of the cavity 10, there is an exhaust hole 10b communicating with the cavity 10a. At least the region where the exhaust hole 10b of the cavity 10 is located is recessed toward the side close to the cavity 10a so as to form a first recess chamber 10c. At least a part of the region of the heating member 21 and the fan 22 of the hot air unit 20 is located in the first recess chamber 10c. In this way, by providing at least a part of the region of the hot air unit 20 in the first recess chamber 10c, the distance between the hot air unit 20 and the cavity 10 can be reduced, so that the overall external dimensions of the hot air structure can be made smaller, and it is possible to avoid as much as possible that the dimensions of the cooking appliance are too large, thick and heavy. Furthermore, since the heating member 21 is not separated from the fan 22 and arranged in the cavity 10a, it is advantageous for the hot air flow to circulate in the closed space without reducing the maximum temperature of the cooking appliance, and the cooking effect can be improved.

[0039] In one embodiment, referring to FIGS. 7 to 9, the hot air unit 20 includes a heat insulation cover 24 that covers the region having the first recess chamber 10c of the cavity 10. The heating member 21 and the fan 22 are located on the side closer to the first recess chamber 10c of the heat insulation cover 24, and the drive member 23 is located on the side away from the first recess chamber 10c of the heat insulation cover 24. The drive shaft of the drive member 23 penetrates the heat insulation cover 24 so as to be drivingly connected to the fan 22.

[0040] Specifically, the heat insulation cover 24 can achieve a heat insulation effect. On the one hand, by making more heat generated by the heating member 21 flow along with the air flow generated by the fan 22, it can enter the cavity 10a through the exhaust hole 10b, and can achieve the effect of preventing heat loss. In this way, the heat generated by the heating member 21 can directly enter the cavity 10a with minimal heat loss to heat the food, and the rapid cooking effect can be realized. On the other hand, the heat insulation cover 24 can also separate the drive member 23 from the heating member 21 to prevent the drive member 23 from overheating and being damaged after the heat generated by the heating member 21 is transmitted to the drive member 23.

[0041] Understandably, the heat insulation cover 24 has a through hole for the drive shaft of the drive member 23 to penetrate, so that the fan 22 can be driven to rotate to generate an air flow.

[0042] In one embodiment, referring to FIGS. 5 and 7, the heat insulation cover 24 includes a first cover body 241 and a second cover body 242 provided at intervals in at least a part of the region. The second cover body 242 is located on the side away from the first recess chamber 10c of the first cover body 241.

[0043] Specifically, only some regions of the first cover body 241 and the second cover body 242 may be spaced apart, or all regions may be spaced apart. Since an interval space is formed, the heat generated by the heat generating member 21 needs to be transmitted to the outside through the first cover body 241, the air layer in the interval space, and the second cover body 242 in the process of being transmitted in the direction close to the driving member 23. Therefore, the heat insulation effect of the heat insulation cover 24 can be further improved.

[0044] Furthermore, in order to further strengthen the heat insulation effect of the heat insulation cover 24 to prevent the driving member 23 from overheating, a heat insulating material can also be provided in the interval space. For example, referring to FIG. 7, the heat insulation cover 24 further includes a heat insulating material 243 located in the interval space between the first cover body 241 and the second cover body 242.

[0045] In one embodiment, referring to FIGS. 10 to 15, a part of the region of the first cover body 241 is recessed toward the side close to the second cover body 242 so as to form a first boss 2411 having a second recess chamber 241a. The second recess chamber 241a is located on the side close to the first recess chamber 10c of the first boss 2411 and communicates with the first recess chamber 10c so as to jointly accommodate the heat generating member 21 and the fan 22. The region of the second cover body 242 close to the first boss 2411 is recessed toward the side away from the first boss 2411 so as to form a second boss 2421 having a first avoidance chamber 242a.

[0046] Specifically, in order to prevent the first recess chamber 10c from being recessed too much and occupying too much space in the cavity 10 when attaching the heat generating member 21 and the fan 22, a part of the outer surface of the first cover body 241 on the side close to the first recess chamber 10c is recessed to form the second recess chamber 241a. Thus, the second recess chamber 241a is combined with the first recess chamber 10c of the cavity 10 to jointly form an attachment chamber for attaching the heat generating member 21 and the fan 22.

[0047] As can be understood, in order to attach the heating member 21 and the fan 22, since the first cover body 241 is recessed toward the side close to the second cover body 242, the back side of the recess will necessarily protrude with respect to other regions, that is, the first boss 2411 will be formed. That is, the side close to the first recess chamber 10c of the first boss 2411 is the second recess chamber 241a, and the side away from the first recess chamber 10c is a stepped surface.

[0048] Also, since the first boss 2411 is formed, in order to ensure the relative distance between the first cover body 241 and the second cover body 242 so that the second cover body 242 does not interfere with the formation of the first boss 2411, the second cover body 242 needs to be recessed correspondingly at the corresponding position with the first boss 2411 to form the first avoidance chamber 242a, whereby the formation of the first boss 2411 can be avoided.

[0049] As can be understood, by only forming the first boss 2411 and the corresponding second boss 2421 by recessing, it is possible to increase only the thickness at the first boss 2411 and the second boss 2421 of the heat insulation cover 24, while ensuring other regions with a thin thickness, so that the outer dimensions of the hot air structure can be reduced as much as possible.

[0050] Furthermore, according to the interval requirement of the interval space between the first cover body 241 and the second cover body 242, part of the region of the first boss 2411 may extend into the first avoidance chamber 242a, and not all regions need to extend into the first avoidance chamber 242a.

[0051] In one embodiment, referring to FIGS. 10 to 15, a part of the region of the second boss 2421 is recessed toward the side close to the first avoidance chamber 242a so as to form a first protrusion 2422 having a third recess chamber 242b. The third recess chamber 242b is located on the side away from the first cover body 241 of the first protrusion 2422. At least a part of the region of the drive member 23 is mounted in the third recess chamber 242b. The region of the first boss 2411 close to the first protrusion 2422 is recessed toward the side away from the first protrusion 2422 so as to form a second protrusion 2412 having a second avoidance chamber 241b.

[0052] Specifically, in order to further reduce the outer dimensions of the hot air unit 20, a part of the second boss 2421 may be recessed toward the side close to the first avoidance chamber 242a so that the drive member 23 extends.

[0053] According to the actual situation, a part of the region of the drive member 23 may extend into the third recess chamber 242b, or all regions may be mounted in the third recess chamber 242b.

[0054] Correspondingly, since the first protrusion 2422 is formed, in order for the first boss 2411 not to interfere with the formation of the first protrusion 2422, the first boss 2411 also needs to be recessed toward the side away from the first protrusion 2422 in the region corresponding to the first protrusion 2422 to form a second avoidance chamber 241b for avoiding the first protrusion 2422.

[0055] It is understandable that the recess direction of the second recess chamber 241a is the same as that of the first avoidance chamber 242a, the recess direction of the third recess chamber 242b is the same as that of the second avoidance chamber 241b, and the recess direction of the second recess chamber 241a is opposite to that of the second avoidance chamber 241b.

[0056] In one embodiment, referring to FIG. 6, the outer surface of the cavity 10 has a first bonding area 11 surrounded along the outer peripheral edge of the first recess chamber 10c, and on the side of the heat insulation cover 24 close to the cavity 10, there is a second bonding area 244 that is bonded and interference-fitted corresponding to the first bonding area 11.

[0057] Specifically, between the cavity 10 and the heat insulation cover 24, they are separated from each other in the first recess chamber 10c, but are bonded to each other in the first bonding area 11 and the second bonding area 244. Therefore, the heat insulation effect in the first recess chamber 10c can be further improved.

[0058] Also, the second bonding area 244 and the first bonding area 11 can achieve interference fitting by tightening with bolts.

[0059] The first bonding area 11 is an area extending around the outer peripheral side of the first recess chamber 10c, and the second bonding area 244 is an area corresponding to the first bonding area 11 on the heat insulation cover 24.

[0060] In one embodiment, referring to FIG. 6, the outer surface of the cavity 10 further has a first partition area 12 and a third bonding area 13. The first partition area 12 is surrounded by the outer peripheral side of the first bonding area 11, the third bonding area 13 is surrounded by the outer peripheral side of the first partition area 12, the heat insulation cover 24 further has a second partition area 245 surrounded by the outer peripheral side of the second bonding area 244 and a fourth bonding area 246 surrounded by 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 away from the other side to form a heat insulation space 245a, and the third bonding area 13 and the fourth bonding area 246 are bonded correspondingly.

[0061] Specifically, since the first partition area 12 can be formed along the outer peripheral side of the first bonding area 11 and the second partition area 245 corresponding to the first partition area 12 can also be formed on the heat insulation cover 24, by separating the first partition area 12 and the second partition area 245 from each other to form the heat insulation space 245a, the heat insulation effect can be further enhanced.

[0062] It should be noted that since the heat insulation space 245a is formed, when the heat generated by the heat generating member 21 is transmitted along the extending direction of the outer surface of the cavity 10, it is necessary to pass through the first bonding area 11, the heat insulation space 245a, and then through the third bonding area 13. Therefore, the heat transfer efficiency can be reduced and the heat insulation effect can be improved.

[0063] Furthermore, 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, and this can also improve the heat insulation effect.

[0064] The specific separation form between the first partition area 12 and the second partition area 245 is not limited. In order to obtain the heat insulation effect, it may be recessed toward one side so as to form a concave groove structure with a space therebetween.

[0065] In a specific embodiment, the hot air unit 20 is provided on the top side of the cavity 10, and the height dimension of the entire hot air structure along the top-bottom direction is only 53 mm, and it can reach 230 °C due to the heat generation of the heat generating member 21.

[0066] In the description of this specification, the descriptions of reference terms such as "one embodiment", "some embodiments", "a specific embodiment", or "exemplary" mean that the specific features, structures, materials, or characteristics described in this embodiment or example are included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, configurations, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples. Also, without contradiction, those skilled in the art can combine different embodiments or examples described in the present disclosure and the features of different embodiments or examples.

[0067] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, various modifications and changes can be made to the present disclosure. It is not intended to limit the present disclosure, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Explanation of Signs

[0068] 10 cavity 10a cavity 10b exhaust hole 10c first recess chamber 11 first bonding area 12 first partition area 13 third bonding area 20 hot air unit 21 heating member 22 fan 23 driving member 24 heat insulation cover 241 first cover body 2411 first boss 241a second recess chamber 2412 second protrusion 241b second avoidance chamber 242 second cover body 2421 second boss 242a first avoidance chamber 2422 first protrusion 242b third recess chamber 243 heat insulation material 244 second bonding area 245 second partition area 245a heat insulation space 246 fourth bonding area

Claims

1. A cavity having a hole, on one outer surface of which there is an exhaust hole communicating with the cavity, and at least the region where the exhaust hole is located is recessed toward the side closer to the cavity so as to form a first recess chamber, and a cavity, A hot air unit provided on the side of the cavity having the first recess chamber, the hot air unit comprising a heating member, a fan, and a driving member, the driving member being drivingly connected to the fan, and at least a part of the heating member and the fan being located within the first recess chamber, and a hot air unit, A hot air structure.

2. The heating member is provided on the circumferential side of the fan so as to be located in the same plane as the fan, and / or On the top side of the cavity, there is the first recess chamber, and the hot air unit is provided on the top side of the cavity, The hot air structure according to claim 1.

3. The hot air unit includes a heat insulation cover covered in the region of the cavity having the first recess chamber, the heating member and the fan are located on the side closer to the first recess chamber of the heat insulation cover, the driving member is located on the side away from the first recess chamber of the heat insulation cover, and the driving shaft of the driving member penetrates the heat insulation cover so as to be drivingly connected to the fan, The hot air structure according to claim 1.

4. The heat insulation cover includes a first cover body and a second cover body provided at intervals in at least a part of the region, and the second cover body is located on the side away from the first recess chamber of the first cover body, The hot air structure according to claim 3.

5. The heat insulation cover further includes a heat insulating material located in the space between the first cover body and the second cover body, The hot air structure according to claim 4.

6. A part of the region of the first cover body is recessed toward the side closer to the second cover body so as to form a first boss having a second recess chamber, the second recess chamber is located on the side closer to the first recess chamber of the first boss and communicates with the first recess chamber so as to jointly accommodate the heating member and the fan, and the region of the second cover body closer to the first boss is recessed toward the side away from the first boss so as to form a second boss having a first avoidance chamber, The hot air structure according to claim 4.

7. A part of the second boss is recessed toward the side closer to the first avoidance chamber so as to form a first protrusion having a third recess chamber. The third recess chamber is located on the side away from the first cover body of the first protrusion. At least a part of the driving member is mounted in the third recess chamber. A region of the first boss close to the first protrusion is recessed toward the side away from the first protrusion so as to form a second protrusion having a second avoidance chamber. The hot air structure according to claim 6.

8. On the outer surface of the cavity, there is a first bonding area surrounded along the outer peripheral edge of the first recess chamber. On the side of the heat insulation cover close to the cavity, there is a second bonding area that bonds and is press-fitted corresponding to the first bonding area. The hot air structure according to claim 3.

9. The outer surface of the cavity further has a first partition area and a third bonding area. The first partition area is surrounded on the outer peripheral side of the first bonding area. The third bonding area is surrounded on the outer peripheral side of the first partition area. The heat insulation cover further has a second partition area surrounded on the outer peripheral side of the second bonding area and a fourth bonding area surrounded on the outer peripheral side of the second partition area. At least one of the first partition area and the second partition area is recessed toward the side away from the other so as to form a separated heat insulation space. The third bonding area and the fourth bonding area are bonded correspondingly. The hot air structure according to claim 8.

10. Equipped with the hot air structure according to any one of claims 1 to 9, The cavity is a cooking chamber. Cooking appliance.

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