CN114287752A

CN114287752A - Integrated kitchen appliance

Info

Publication number: CN114287752A
Application number: CN202111637247.0A
Authority: CN
Inventors: 易正清; 杨一川; 彭小康; 杨树进; 陈湛湛
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-04-08

Abstract

The application discloses integrated form kitchen appliance. The integrated kitchen appliance comprises a kitchen range module and an air conditioner module. The stove module comprises a cooking bench and an air outlet part far away from the cooking bench. The air conditioning module is arranged below the stove module and comprises a cold air duct, and an air outlet of the cold air duct is communicated with an air outlet of the air outlet portion. The integrated form kitchen appliance of this application embodiment, the top of a kitchen range is kept away from to the air-out portion for the air-out direction of cold wind dorsad the top of a kitchen range, so can avoid cold wind to influence the flame on the top of a kitchen range, avoid the oil smoke to pollute, block up the air-out portion. The air conditioning module is compact in structure and arranged below the stove module, so that the occupied space can be effectively reduced, and the space utilization rate is improved.

Description

Integrated kitchen appliance

Technical Field

The application relates to the technical field of household appliances, in particular to an integrated kitchen appliance.

Background

With the increasing living standard, the diversified demands of people are higher and higher. Kitchen problems, especially high temperatures in kitchens, are of great interest. In the related art, some users can install ceiling ventilation fans, wall-mounted air conditioners and the like in order to solve the high-temperature problem, however, the pure ventilation function of the ventilation fans is not ideal in the high-temperature environment with high-power output when the stove is started; the wall-mounted air conditioner may cause pipeline blockage due to oil smoke and may also affect flames on a cooking bench, and the air conditioner is large in size, so that the kitchen space utilization rate is low.

Disclosure of Invention

The embodiment of the application provides an integrated kitchen appliance.

The integrated kitchen appliance of the embodiment of the application comprises a kitchen range module and an air conditioner module. The kitchen range module comprises a kitchen range and an air outlet portion far away from the kitchen range, the air conditioning module is arranged below the kitchen range module and comprises a cold air duct, and an air outlet of the cold air duct is communicated with an air outlet of the air outlet portion.

The integrated form kitchen appliance of this application embodiment, the top of a kitchen range is kept away from to the air-out portion for the air-out direction of cold wind dorsad the top of a kitchen range, so can avoid cold wind to influence the flame on the top of a kitchen range, avoid the oil smoke to pollute, block up the air-out portion. The air conditioning module is compact in structure and arranged below the stove module, so that the occupied space can be effectively reduced, and the space utilization rate is improved.

In certain embodiments, the integrated kitchen appliance further comprises at least one of a steam box module, an oven module, a sterilization module, a smoke machine module, a freshness module, the steam box module, the oven module, the sterilization module, the freshness module being located below the cooktop module; the machine head of the smoke machine module is positioned above the kitchen range module, and the fan of the smoke machine module is positioned below the kitchen range module.

In certain embodiments, the integrated kitchen appliance includes a first cooking module located below the cooktop module and a second cooking module located below the first cooking module, the air conditioning module being located to the side of the first and second cooking modules.

In some embodiments, the air conditioning module includes an air conditioner and a hot air duct, the air conditioner is connected to the cold air duct and the hot air duct, and an air inlet of the hot air duct is located below an air inlet of the cold air duct.

In some embodiments, the integrated kitchen appliance includes an exhaust duct, and the hot air duct connects the exhaust duct and the air conditioner.

In some embodiments, the air outlet of the air outlet portion is provided with an air outlet guide vane.

In certain embodiments, the cooktop module includes a control panel that connects the cooktop and the air outlet at an incline.

In some embodiments, the air conditioning module includes a box body, an air conditioner and an air conditioning press block, the air conditioner and the air conditioning press block are arranged in the box body, and the air conditioner is fixed in the box body by the air conditioning press block.

In some embodiments, a condensed water box is arranged below the box body.

In some embodiments, a partition is disposed in the box body, the air conditioner includes a refrigerating portion and a heating portion, the refrigerating portion and the inner wall of the box body form a first gap at an interval, the heating portion and the inner wall of the box body form a second gap at an interval, and the partition separates the first gap from the second gap.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 to 6 are schematic structural views of an integrated kitchen appliance according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present application, and are not to be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, it is worth mentioning that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplified description of the embodiments of the present application, and thus, are not to be construed as limiting the embodiments of the present application. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The features defined as "first", "second" may explicitly or implicitly include one or more of the features described. In the description of the embodiments of the present application, "a plurality" means two or more.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; the terms may be directly connected or indirectly connected through an intermediate, and the specific meanings of the terms in the embodiments of the present application may be understood according to specific situations.

In embodiments of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Embodiments of the present application may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. Embodiments of the present application provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 2 together, an integrated kitchen appliance 100 according to an embodiment of the present disclosure includes a cooker module 10 and an air conditioner module 20. The hob module 10 comprises a hob 11 and an air outlet 12 remote from the hob 11. The air conditioning module 20 is arranged below the stove module 10, the air conditioning module 20 comprises a cold air duct 21, and an air outlet 211 of the cold air duct 21 is communicated with an air outlet of the air outlet portion 12.

The integrated kitchen appliance 100 of the embodiment of the present application, air-out portion 12 is kept away from the cooking bench 11 for the air-out direction of cold wind is away from the cooking bench 11, so can avoid cold wind to influence the flame on the cooking bench 11, avoid the oil smoke to pollute, block up air-out portion 12. The air conditioning module 20 has a compact structure, and can effectively reduce the occupied space and improve the space utilization rate by being arranged below the stove module 10.

Particularly, as the user attaches more and more importance to the home environment, especially the requirement on the cooking appliance is higher and higher, the cooking appliance not only can meet the daily use requirement, but also can meet the requirements of other aspects such as practicality, high cost performance, beauty, comfortable use feeling and the like. The integrated kitchen appliance 100 according to the embodiment of the present application can satisfy various demands of a user, and the user can cook food using the cooker module 10. The air conditioning module 20 can solve the problem of high temperature in the kitchen, and the cold wind blown out by the air conditioning module 20 is directed away from the flame on the cooking bench 11.

Specifically, the cooktop 11 may be understood as a planar portion of the cooktop module 10 on which the object can be placed, and the planar portion of the cooktop 11 may be rectangular, square, oval, and the like, which is not limited herein. In some embodiments, the cooktop 11 may be formed by splicing a plurality of cooktops, which is not limited herein. In one embodiment, the cooktop 11 may be formed by splicing 2 cooktops, wherein one cooktop is rectangular, the other cooktop is square, and the cooktop 11 spliced by 2 cooktops is L-shaped. The cooker module 10 includes a cooker, which may be a natural gas cooker, an artificial gas cooker, a liquefied petroleum gas cooker, or the like. The cookers may be cookers that are disposed directly above the cooktop 11, or may be built-in cookers. The stove comprises a stove fire cover, fire holes can be formed in the stove fire cover, and flame can be generated through air outlet and combustion of the fire holes. The fire holes can be round holes, trapezoids, rectangles, strips and the like. The stove module 10 comprises an air outlet part 12, the air outlet part 12 is connected with the cooking bench 11, and the connection mode comprises direct connection and indirect connection. The air outlet portion 12 and the cooking bench 11 may not be on the same horizontal plane, and the air outlet portion 12 may blow out cold air, which may not directly blow to the cooking bench 11. In one embodiment, the upper surface of the cooking bench 11 can be understood as one plane, the surface of the air outlet portion 12 can be understood as the other plane, and the two planes are perpendicular to each other in space, so that the influence of cold air on flames on the cooking bench 11 can be avoided, and the oil smoke pollution and the blockage of the air outlet portion 12 are avoided.

The air conditioning module 20 may be used to output an airflow, including a cold airflow. The air conditioning module 20 includes a cool air duct 21, and an air outlet 211 of the cool air duct 21 is communicated with an air outlet of the air outlet portion 12. In one embodiment, when the air conditioning module 20 is in operation, the airflow entering the air conditioning module 20 may be cooled after heat exchange, and then the cool airflow is guided to the air outlet portion 12 by the cool airflow duct 21. The cool air duct 21 may be made of metal or plastic, and is not limited herein. Cold wind channel 21 is including turning to section, air inlet section and air-out section, and cold wind channel 21 can be discharged cold air stream from integrated form kitchen appliance 100's middle part region through turning to section, air inlet section and air-out section, so can make the air current blow to the user when on one's body the sense of wind bilateral symmetry, effectively promote user's culinary art and experience.

In certain embodiments, the integrated kitchen appliance 100 further comprises at least one of a steam box module, an oven module, a sterilization module, a smoke machine module, and a preservation module, the steam box module, the oven module, the sterilization module, and the preservation module being located below the cooktop module 10; the aircraft nose of cigarette machine module is located the top of cooking utensils module 10, and the fan of cigarette machine module is located the below of cooking utensils module 10.

Specifically, the integrated kitchen appliance 100 may include a plurality of modules, the steam box module may include a steam box, the oven module may include an oven, a micro-steaming and baking all-in-one machine, the sterilization module includes a sterilization cabinet, the preservation module includes a safe and a refrigerator, the range hood module may be a range hood, and the range hood module includes a machine head and a fan.

The integrated kitchen appliance 100 can satisfy various demands of users. In some embodiments, the integrated kitchen appliance 100 may include at least one of a range hood, a gas range, a steam box, a sterilizer, an oven, a cupboard, etc., and the integrated kitchen appliance 100 may be a multiple cooking appliance all-in-one machine. In some embodiments, the integrated kitchen appliance 100 may be an integrated steamer, an integrated micro-steamer, an integrated sterilizer, and the like, without limitation. A plurality of modules for cooking or housing of the integrated kitchen appliance 100 may be disposed below the cooker module 10, and a head of the integrated kitchen appliance 100 is disposed above the cooker module 10 to treat oil smoke generated during cooking. The fan is located below the cooker module 10, and utilizes the remaining space below the cooker module 10.

Thus, the integrated kitchen appliance 100 has a compact structure, and can effectively reduce the occupied kitchen space and improve the utilization rate of the kitchen space.

Referring to fig. 1 to 4 together, in some embodiments, the integrated kitchen appliance 100 includes a first cooking module 31 and a second cooking module 32, the first cooking module 31 is located below the cooktop module 10, the second cooking module 32 is located below the first cooking module 31, and the air conditioning module 20 is located at a side of the first cooking module 31 and the second cooking module 32.

In one embodiment, the first cooking module 31 may be a steam box module, the second cooking module 32 may be an oven module, and the steam box module and the oven module may have the same size and shape as a rectangular parallelepiped. The steam box module and the oven module are stacked in the vertical direction, the steam box module is located above the oven module, and the steam box module is located between the cooker module 10 and the oven module. The air conditioning module 20 is located at the side of the steam box module and the oven module. Specifically, the side edges include a left side edge and a right side edge, the air conditioning module 20 may be disposed on the left side edge of the steam box module and the oven module, and the air conditioning module 20 may also be disposed on the right side edge of the steam box module and the oven module, which is not limited herein.

So, integrated form kitchen appliance 100 compact structure, reasonable in design has multiple practical function, can also effectively reduce and occupy the kitchen space, promotes kitchen space utilization.

Referring again to fig. 2, in some embodiments, the air conditioning module 20 includes an air conditioner 22 and a hot air duct 23, the air conditioner 22 is connected to the cold air duct 21 and the hot air duct 23, and an air inlet 232 of the hot air duct 23 is located below an air inlet 212 of the cold air duct 21.

Specifically, the air conditioner 22 is configured to output an airflow that includes a cold airflow and a hot airflow. The air conditioner 22 is connected to the cool air duct 21, and the cool air flow can be discharged through the cool air duct 21. The air conditioner 22 is also connected to a hot air duct 23, and hot air can be discharged through the hot air duct 23. In one embodiment, the hot air duct 23 and the cold air duct 21 are both connected to the air conditioner 22, the air conditioner 22 may include a front side wall and a rear side wall that are disposed opposite to each other, the air inlet 212 of the cold air duct 21 may be connected to an upper half portion of the front side wall of the air conditioner 22, and the air inlet 232 of the hot air duct 23 may be connected to a lower half portion of the rear side wall of the air conditioner 22, so that the air conditioning module 20 has a compact structure, and the design of the hot air duct 23 and the hot air duct 23 may improve the space utilization rate of the integrated kitchen appliance 100.

Referring to fig. 1, 2 and 5, in some embodiments, the integrated kitchen appliance 100 includes an exhaust duct 40, and a hot air duct 23 connecting the exhaust duct 40 and the air conditioner 22.

Specifically, the air conditioner 22 may output a hot air flow, which passes through the hot air duct 23 and then is exhausted through the exhaust duct 40. In some embodiments, the integrated kitchen appliance 100 includes a range hood module, which may be a range hood, through which hot gas flow may pass to exit the top of the range hood module before exiting the range hood module to the exhaust duct 40.

Referring to fig. 3 and 4, in some embodiments, the outlet of the air outlet portion 12 is provided with an air outlet guide vane 50.

In one embodiment, the air outlet guide vane 50 is installed in a middle region of the integrated kitchen appliance 100, and is disposed corresponding to the air outlet 211 of the cool air duct 21. The air outlet guide vane 50 may be connected to the air outlet 211 of the cool air duct 21 or connected to the air outlet of the air outlet portion 12. The mounting manner may be by means of a snap fit, a screw thread, or the like, so that the air outlet guide vane 50 can be easily detached and maintained.

Specifically, the outlet guide vane 50 may be installed in a middle region of the outlet portion 12, and the outlet guide vane 50 corresponds to the air outlet 211 of the cool air duct 21. In one embodiment, the outlet guide vane 50 may be rotatably inserted into the outlet portion 12 through a driving structure, such that the driving structure may drive the outlet guide vane 50 to rotate reciprocally, and the airflow may pass through the outlet guide vane 50 before flowing out of the integrated kitchen appliance 100, and the outlet guide vane 50 may change the airflow flowing direction, so that the airflow is stable and the noise is low. The air outlet guide vane 50 can also make the flow direction of the air flow back to the cooking bench 11, so as to reduce the influence of the air flow on the performance of the cooking range. Under the condition that the integrated kitchen appliance 100 is not used, the air outlet guide vane 50 can be closed, so that dust and sundries are prevented from entering the cold air duct 21.

Referring to fig. 1 and 6 together, in some embodiments, the cooking module 10 includes a control panel 13, and the control panel 13 is obliquely connected to the cooking bench 11 and the air outlet 12.

Specifically, the user may use the control panel 13 to open or close any module of the integrated kitchen appliance 100, and may also use the control panel 13 to select a function of the integrated kitchen appliance 100. The control panel 13 may be electrically connected to a controller, and the controller is electrically connected to the air conditioning module 20, so that the temperature of the airflow blown out by the air conditioning module 20 can be adjusted according to the user's requirement. In some embodiments, the controller may be a single chip integrated with a processor, a memory, a communication module, and the like. The processor may refer to a processor included in the controller. The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.

The control panel 13 is obliquely connected with the cooking bench 11 and the air outlet part 12, so that the cooking bench 11 and the air outlet part 12 are not positioned on the same plane, the influence of cold air on flames on the cooking bench 11 can be avoided, and the control panel 13 can be conveniently operated by a user.

Referring again to fig. 2, in some embodiments, the air conditioning module 20 includes a box 24, an air conditioner 22 and an air conditioning press 25, the air conditioner 22 is disposed in the box 24, and the air conditioner 22 is fixed in the box 24 by the air conditioning press 25.

In one embodiment, the air conditioning module 20 includes a plurality of air conditioning compacts 25, the plurality of air conditioning compacts 25 connect the air conditioner 22 and the box body 24, and the air conditioner 22 may be fixed inside the box body 24 by the plurality of air conditioning compacts 25, such that the air conditioner 22 is more stable.

Referring to fig. 1-4, in some embodiments, a condensed water box 50 is disposed below the box body 24.

In some embodiments, the condensate box 50 may be used to contain condensate water, and the condensate box 50 may communicate with the air conditioning module 20 through a duct. Thus, the condensed water box 50 is disposed under the box body 24, so that the condensed water box 50 is convenient to replace and maintain, and meanwhile, the condensed water box 50 and the air conditioning module 20 are compact in design, so that the space utilization rate of the integrated kitchen appliance 100 can be improved.

Referring to fig. 1, 2 and 5, in some embodiments, a partition 26 is disposed in the box 24, the air conditioner 22 includes a cooling portion 221 and a heating portion 222, the cooling portion 221 is spaced apart from an inner wall of the box 24 to form a first gap 201, the heating portion 222 is spaced apart from the inner wall of the box 24 to form a second gap 202, and the partition 26 is spaced apart from the first gap 201 and the second gap 202.

Specifically, in the case that the refrigerating part 221 is in operation, the kitchen may be cooled by generating a cold airflow using the refrigerating part 221; when the heating unit 222 is in operation, the heating unit 222 may be used to generate hot air flow to heat the kitchen, and the user may output the air flow by using the air conditioner 22 according to the requirement.

The cooling unit 221 is located at the upper half of the air conditioner 22, and the cooling unit 221 may exchange heat with the air flow to cool the air flow. The cooling part 221 includes an evaporator. The heating unit 222 may be located at a lower half of the air conditioner 22, the heating unit 222 may heat exchange and heat up the air flow, and the heating unit 222 includes a condenser. The partition 26 can partition the first gap 201 and the second gap 202, so that the outside air flow is drawn into the first gap 201 and the second gap 202, respectively, in the case where the air conditioner 22 is operated. The cooling portion 221 may make the airflow in the first gap 201 into a cold airflow, and the cold airflow may be discharged through the cold air duct 21; the heating portion 222 may make the air flow in the second gap 202 into a hot air flow, and the hot air flow may be discharged through the hot air duct 23. The partition 26 separates the first gap 201 and the second gap 202, and effectively prevents the cold air duct 21 and the hot air duct 23 from blowing air.

The partition 26 may be made of metal, and the partition 26 may be made of plastic, which is not limited herein. The metal separator 26 can be equivalent to a sheet metal part, and the metal separator 26 is more durable and is not easy to deform, damage and the like. The plastic spacer 26 can reduce the production process and the production cost. In some embodiments, the partition 26 may be "U" shaped, with a through hole formed in the partition 26 for receiving the air conditioner 22. The partition 26 is installed between the box body 24 and the air conditioner 22, so that the space utilization rate in the box body 24 can be improved, and the wind insulation effect of the partition 26 can be ensured.

Referring again to fig. 3 and 4, in some embodiments, the integrated kitchen appliance 100 includes an air inlet grille 60, the air inlet grille 60 being coupled to the housing 24 and abutting against the partition 26. Specifically, the air intake grill 60 is coupled to the box body 24. Under the condition that the air conditioner 22 works, airflow can enter the box body 24 through the air inlet grille 60, and the air inlet grille 60 can protect the air conditioner 22 and prevent the air conditioner 22 from colliding. Meanwhile, the air inlet grille 60 has a flow guiding function on the entering air flow, and can provide a guiding function for the air flow, so that the air conditioner 22 can conveniently exchange heat and cool the air flow. The partition 26 is abutted against the air inlet grille 60, so that when the air flow just enters the shell, the air flow can be respectively sucked into the cold air duct 21 and the hot air duct 23, and the problem of air robbery is avoided.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. An integrated kitchen appliance, comprising:

the cooking appliance module comprises a cooking bench and an air outlet part far away from the cooking bench;

the air conditioning module is arranged below the stove module and comprises a cold air duct, and an air outlet of the cold air duct is communicated with an air outlet of the air outlet portion.

2. The integrated kitchen appliance according to claim 1, further comprising at least one of a steam box module, an oven module, a sanitizing module, a cigarette machine module, a refresher module,

the steam box module, the oven module, the disinfection module and the preservation module are positioned below the stove module;

the machine head of the smoke machine module is positioned above the kitchen range module, and the fan of the smoke machine module is positioned below the kitchen range module.

3. The integrated kitchen appliance according to claim 1, including a first cooking module located below the cooktop module and a second cooking module located below the first cooking module, the air conditioning module being located to the side of the first and second cooking modules.

4. The integrated kitchen appliance according to claim 1, wherein the air conditioning module comprises an air conditioner and a hot air duct, the air conditioner is connected with the cold air duct and the hot air duct, and an air inlet of the hot air duct is located below an air inlet of the cold air duct.

5. The integrated kitchen appliance according to claim 4, including an exhaust duct, said hot air duct connecting said exhaust duct and said air conditioner.

6. The integrated kitchen appliance according to claim 1, wherein the outlet of the outlet portion is provided with outlet guide vanes.

7. The integrated kitchen appliance according to claim 1, wherein the cooktop module comprises a control panel that tiltably connects the cooktop and the air outlet.

8. The integrated kitchen appliance according to claim 1, wherein the air conditioning module comprises a box body, an air conditioner and an air conditioning press block, the air conditioner and the air conditioning press block being disposed within the box body, the air conditioner being secured within the box body by the air conditioning press block.

9. The integrated kitchen appliance according to claim 8, wherein a condensate water box is provided below the box body.

10. The integrated kitchen appliance according to claim 8, wherein a partition is provided in the box, the air conditioner includes a cooling portion and a heating portion, the cooling portion is spaced apart from the inner wall of the box to form a first gap, the heating portion is spaced apart from the inner wall of the box to form a second gap, and the partition separates the first gap from the second gap.