Heat preservation cover and cooking utensil with same

Abstract

The utility model provides a heat preservation cover and a cooking utensil with the same. The heat preservation cover comprises a heat preservation cover bottom wall and a heat preservation cover side wall. The lower end of the heat-preservation cover side wall is connected with the heat-preservation cover bottom wall. Wherein a mounting surface for mounting a pressure switch and a drainage surface which is adjacent to and communicated with the mounting surface are arranged on the upper surface of the bottom wall of the heat preservation cover, and the drainage surface is lower than the mounting surface. According to the technical scheme, the problem that in the prior art, liquid easily flows into the pressure switch from the mounting hole, so that the pressure switch is prone to poor induction is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, and particularly relates to a heat preservation cover and a cooking appliance with the same. Background Art

[0002] The cooking appliance includes a housing, a heat preservation cover arranged in the housing, an inner pot removably arranged in the heat preservation cover, a pressure switch arranged on the heat preservation cover, and a cover body which can be opened and closed and is arranged on the housing. When the pressure in the cooking appliance is relatively high, the heat preservation cover can be deformed, and the pressure switch detects the pressure in the cooking appliance by detecting the deformation degree of the heat preservation cover so as to control the pressure value in the cooking appliance.

[0003] In the related art, mounting holes penetrating through the upper surface and the lower surface of the bottom wall of the heat preservation cover are arranged on the bottom wall of the heat preservation cover, a connecting piece is arranged in the mounting holes, and the pressure switch is connected to the connecting piece.

[0004] In this way, when liquid enters the heat preservation cover, the liquid easily flows into the pressure switch through the mounting holes. When the pressure switch comes into contact with the liquid, the induction of the pressure switch is likely to be poor, thereby affecting the detection effect of the pressure switch on the pressure in the cooking appliance. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a heat preservation cover and a cooking appliance with the same, so as to solve the problem in the related art that liquid easily flows into the pressure switch through the mounting holes, resulting in poor induction of the pressure switch.

[0006] To achieve the above purpose, according to one aspect of the utility model, a heat preservation cover is provided. The heat preservation cover includes a bottom wall of the heat preservation cover and a side wall of the heat preservation cover. The lower end of the side wall of the heat preservation cover is connected to the bottom wall of the heat preservation cover. Wherein, a mounting surface for mounting the pressure switch and a drainage surface which is adjacent to and communicated with the mounting surface are arranged on the upper surface of the bottom wall of the heat preservation cover, and the height of the drainage surface is lower than that of the mounting surface.

[0007] By applying the technical solution of the utility model, the arrangement of the mounting surface facilitates the installation of the pressure switch on the bottom wall of the heat preservation cover. Since the drainage surface is lower than the mounting surface and the mounting surface is communicated with the drainage surface, the water in the heat preservation cover can be drained to the lower drainage surface, thereby reducing the possibility of liquid existing on the mounting surface, further reducing the possibility of the pressure switch coming into contact with the liquid, and further reducing the possibility of poor induction of the pressure switch, and ensuring the detection effect of the pressure switch on the pressure in the cooking appliance. Therefore, the technical solution of the application effectively solves the problem in the related art that liquid easily flows into the pressure switch through the mounting holes, resulting in poor induction of the pressure switch.

[0008] Further, drain holes penetrating through the upper and lower surfaces of the bottom wall of the heat preservation cover are provided on the drainage surface. The arrangement of the drain holes facilitates the discharge of the liquid on the drainage surface, so as to reduce the accumulation of the liquid on the drainage surface.

[0009] Further, a drainage convex portion located on one side of the mounting surface is provided on the bottom wall of the heat preservation cover. The lower surface of the drainage convex portion protrudes downward. The drainage convex portion includes a drainage side wall and a drainage bottom wall connected to the lower end of the drainage side wall. The upper end of the drainage side wall is connected to the mounting surface, and the upper surface of the drainage bottom wall forms the drainage surface. The arrangement of the drainage convex portion facilitates the drainage and accommodation of the liquid, and also facilitates the arrangement of the drainage surface. The arrangement of the drainage side wall enables the liquid on the mounting surface to flow to the drainage surface of the drainage convex portion through the drainage of the drainage side wall.

[0010] Further, mounting holes penetrating through the upper and lower surfaces of the mounting surface are provided on the mounting surface. A connecting member is arranged in the mounting holes, and the pressure switch is connected to the mounting surface through the connecting member. A water-blocking flanging is provided around the mounting holes, and the water-blocking flanging extends upward. The arrangement of the water-blocking flanging can prevent the liquid on the mounting surface from flowing into the mounting holes, so as to reduce the possibility of the liquid contacting the pressure switch.

[0011] Further, a mounting convex portion is also provided on the bottom wall of the heat preservation cover. The lower surface of the mounting convex portion protrudes downward. The mounting surface is arranged inside the mounting convex portion, and the mounting convex portion is communicated with the drainage convex portion. The arrangement of the mounting convex portion facilitates the processing of the mounting surface and improves the processing accuracy of the mounting surface. The liquid inside the mounting convex portion can flow into the drainage convex portion.

[0012] Further, a positioning recess for accommodating the positioning piece of the pressure switch is provided on the lower surface of the mounting convex portion, and the positioning piece is in positioning fit with the positioning recess. The arrangement of the positioning recess facilitates the positioning of the positioning piece, so that the installation position of the pressure switch on the heat preservation cover is more accurate. And / or, the mounting convex portion and the drainage convex portion are adjacent to each other in the circumferential direction of the bottom wall of the heat preservation cover. So that the area of the drainage convex portion 30 can be larger, and the drainage and export of the liquid can be better realized.

[0013] Further, the mounting surface and / or the drainage surface is a plane, which is convenient for the processing of the mounting surface and / or the drainage surface. At the same time, the mounting surface being a plane is convenient for the connection of the pressure switch.

[0014] Further, the distance between the drain hole and the pressure switch is in the range of 5 mm to 30 mm, which is convenient for draining the liquid to the drain hole and discharging it, and also convenient for reducing the possibility of the liquid contacting the pressure switch. And / or, the area of the drain hole is in the range of 20 mm 2 to 50 mm 2 so as to improve the drainage effect of the drain hole and facilitate the processing of the drain hole.

[0015] Further, the height difference between the installation surface and the drainage surface is in the range of 0.5 mm to 2.0 mm, so as to facilitate the drainage of the liquid onto the drainage surface and also facilitate the processing of the installation surface and the drainage surface.

[0016] According to another aspect of the present utility model, there is provided a cooking appliance, including a housing, a heat preservation cover disposed within the housing, and a pressure switch disposed on the heat preservation cover, and the heat preservation cover is the above-mentioned heat preservation cover. Since the above-mentioned heat preservation cover can solve the problem in the related art that the liquid easily flows into the pressure switch through the installation hole, resulting in poor induction of the pressure switch, the cooking appliance having this heat preservation cover can solve the same technical problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model, and the schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 Fig. shows a three-dimensional structural schematic diagram of the heat preservation cover according to the embodiment of the present utility model when it is inverted;

[0019] Figure 2 Fig. shows Figure 1 a three-dimensional structural schematic diagram of the heat preservation cover when it is inverted and the pressure switch is not provided;

[0020] Figure 3 Fig. shows Figure 1 a disassembled structural schematic diagram of the heat preservation cover when it is inverted;

[0021] Figure 4 Fig. shows Figure 1 a partial enlarged view of the installation surface of the heat preservation cover;

[0022] Figure 5 Fig. shows Figure 1 a three-dimensional structural schematic diagram of the pressure switch of the heat preservation cover when it is inverted;

[0023] Figure 6 Fig. shows Figure 1 a sectional schematic diagram of the pressure switch of the heat preservation cover.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 10, heat preservation cover side wall;

[0026] 20, heat preservation cover bottom wall; 21, installation lower convex part; 22, installation surface; 221, installation hole; 222, water retaining flanging; 23, positioning recess;

[0027] 30. Drainage convex part; 31. Drainage side wall; 32. Drainage surface; 321. Drainage hole;

[0028] 40. Pressure switch; 41. Connector; 42. Positioning piece;

[0029] L. Distance between the drainage hole and the pressure switch;

[0030] H1. Height difference between the installation surface and the drainage surface;

[0031] H2. Height difference between the drainage surface and the bottom wall of the heat preservation cover;

[0032] H3. Height of the water retaining flange. Detailed implementation mode

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0034] It should be noted that the terms used here are only for describing the specific implementation mode and are not intended to limit the exemplary implementation mode according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] AsFigure 1 , Figure 4 and Figure 6 As shown in and

[0037] , the heat insulation cover of this embodiment includes a heat insulation cover bottom wall 20 and a heat insulation cover side wall 10. The lower end of the heat insulation cover side wall 10 is connected to the heat insulation cover bottom wall 20. Among them, an installation surface 22 for installing a pressure switch 40 and a drainage surface 32 which is adjacent to and communicated with the installation surface 22 are provided on the upper surface of the heat insulation cover bottom wall 20, and the height of the drainage surface 32 is lower than that of the installation surface 22.

[0037] Applying the technical solution of this embodiment, the setting of the installation surface 22 facilitates the installation of the pressure switch 40 on the heat insulation cover bottom wall 20. Since the drainage surface 32 is lower than the installation surface 22 and the installation surface 22 is communicated with the drainage surface 32, the water in the heat insulation cover can be drained to the lower drainage surface 32, thereby reducing the possibility of liquid existing on the installation surface 22, further reducing the possibility of the pressure switch 40 contacting the liquid, and further reducing the possibility of poor induction of the pressure switch 40, ensuring the detection effect of the pressure switch 40 on the pressure in the cooking appliance. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that the liquid easily flows into the pressure switch from the installation hole, making the pressure switch prone to poor induction.

[0038] It should be noted that: Figure 1 The up and down directions marked are the placement directions when the heat insulation cover is in use. When the heat insulation cover is in use, the opening of the heat insulation cover faces upward and the heat insulation cover bottom wall 20 faces downward.

[0039] As Figures 1 to 6 shown, a drain hole 321 penetrating the upper surface and the lower surface of the heat insulation cover bottom wall 20 is provided on the drainage surface 32. The setting of the drain hole 321 facilitates the discharge of the liquid on the drainage surface 32, reduces the accumulation of the liquid on the drainage surface 32, further reduces the possibility of liquid existing on the installation surface 22, reduces the possibility of the pressure switch 40 contacting the liquid and rusting, and increases the service life of the pressure switch 40.

[0040] In this embodiment, the water discharged from the drain hole 321 can be discharged from the through hole on the outer shell. The height difference H2 between the drainage surface 32 and other parts of the heat insulation cover bottom wall 20 is in the range of 3 mm to 6 mm (that is, the height difference H2 is greater than or equal to 3 mm and less than or equal to 6 mm), which facilitates the processing of the drainage surface 32 during stretch forming, reduces the possibility of the drainage surface 32 being stretched and broken during processing, and at the same time makes there be a height difference between the installation surface 22 and the drainage surface 32. The height difference H2 between the drainage surface 32 and the heat insulation cover bottom wall 20 is preferably 3 mm, 4 mm, 5 mm or 6 mm.

[0041] In other embodiments, the liquid flows to the drainage surface 32, and the liquid can evaporate as the cooking appliance is used.

[0042] As Figures 1 to 6 shown, a drainage convex portion 30 is provided on the bottom wall 20 of the heat preservation cover and is located on one side of the installation surface 22, and the lower surface of the drainage convex portion 30 protrudes downward. The drainage convex portion 30 includes a drainage side wall 31 and a drainage bottom wall connected to the lower end of the drainage side wall 31. The upper end of the drainage side wall 31 is connected to the installation surface 22, and the upper surface of the drainage bottom wall forms a drainage surface 32. The setting of the drainage convex portion 30 facilitates the drainage and accommodation of liquid, and also facilitates the setting of the drainage surface 32. The structure of the drainage convex portion 30 is simple and convenient for processing. The drainage side wall 31 can connect the drainage convex portion 30 and the installation surface 22, so that the liquid at the installation surface 22 can flow to the drainage surface 32 of the drainage convex portion 30 through the drainage of the drainage side wall 31. In this embodiment, the drainage convex portion 30 and the bottom wall 20 of the heat preservation cover are integrally formed by stretching. For the convenience of processing and forming, the drainage side wall 31 can be an inclined surface arranged at an angle with the installation surface 22.

[0043] As Figures 1 to 6 shown, an installation hole 221 penetrating the upper surface and the lower surface of the installation surface 22 is provided on the installation surface 22, and a connecting member 41 is arranged in the installation hole 221. The pressure switch 40 is connected to the installation surface 22 through the connecting member 41. A water retaining flange 222 is provided around the installation hole 221, and the water retaining flange 222 extends upward. The setting of the installation hole 221 facilitates the installation of the connecting member 41, so as to facilitate the installation of the pressure switch 40 on the installation surface 22. The setting of the water retaining flange 222 can prevent the liquid on the installation surface 22 from flowing into the installation hole 221, so as to reduce the possibility of the liquid contacting the pressure switch 40.

[0044] In this embodiment, the height H3 of the water retaining flange 222 is in the range of 1 mm to 2 mm (that is, the height difference H3 is greater than or equal to 1 mm and less than or equal to 2 mm), so as to facilitate the blocking effect of the water retaining flange 222 on the liquid and also facilitate the processing of the water retaining flange 222. The height H3 of the water retaining flange 222 is preferably 1 mm, 1.5 mm or 2 mm.

[0045] As Figures 1 to 6 shown, an installation convex portion 21 is further provided on the bottom wall 20 of the heat preservation cover. The lower surface of the installation convex portion 21 protrudes downward. The installation surface 22 is arranged in the installation convex portion 21, and the installation convex portion 21 is communicated with the drainage convex portion 30. The setting of the installation convex portion 21 facilitates the processing of the installation surface 22, facilitates the improvement of the processing accuracy of the installation surface 22, and further facilitates the installation of the pressure switch 40 on the installation surface 22. The communication setting of the installation convex portion 21 and the drainage convex portion 30 enables the liquid on the installation convex portion 21 to flow into the drainage convex portion 30.

[0046] The installation convex part 21 and the drainage convex part 30 are arranged adjacent to each other in the circumferential direction of the bottom wall 20 of the heat preservation cover. In this way, since there is a large space in the circumferential direction of the bottom wall 20 of the heat preservation cover, it is convenient to arrange the drainage convex part 30, so that the area of the drainage convex part 30 can be larger, and the drainage and export of liquid can be better realized.

[0047] In this embodiment, the installation convex part 21 protrudes downward, and the upper surface of the installation surface 22 is lower than the upper surface of the bottom wall 20 of the heat preservation cover. The installation convex part 21 is arranged at the edge of the bottom wall 20 of the heat preservation cover.

[0048] As Figures 1 to 6 shown, a positioning recess 23 for accommodating the positioning piece 42 of the pressure switch 40 is arranged on the lower surface of the installation convex part 21, and the positioning piece 42 is in positioning cooperation with the positioning recess 23. The arrangement of the positioning recess 23 facilitates the positioning of the positioning piece 42, so that the installation position of the pressure switch 40 on the heat preservation cover is more accurate, and the detection accuracy of the deformation of the heat preservation cover by the pressure switch 40 is improved.

[0049] As Figures 1 to 6 shown, both the installation surface 22 and the drainage surface 32 are flat surfaces, which is convenient for the processing of the installation surface 22 and the drainage surface 32.

[0050] In other embodiments, either the installation surface 22 or the drainage surface 32 is a flat surface. Or, the drainage surface 32 is an inclined surface, and the drain hole 321 is arranged on the lower side of the drainage surface 32.

[0051] As Figures 1 to 6 shown, the distance L between the drain hole 321 and the pressure switch 40 is in the range of 5 mm to 30 mm (that is, the distance L is greater than or equal to 5 mm and less than or equal to 30 mm), so as to facilitate the drainage of the liquid to the drain hole 321 and discharge it, and also facilitate reducing the possibility of the liquid contacting the pressure switch 40. The area of the drain hole 321 is in the range of 20 mm 2 to 50 mm 2 , so as to facilitate improving the drainage effect of the drain hole 321 and also facilitate the processing of the drain hole 321.

[0052] In this embodiment, the distance L between the drain hole 321 and the pressure switch 40 is preferably 5 mm, 6 mm, 10 mm, 20 mm or 30 mm. The area of the drain hole 321 is preferably 20 mm 2 , 30 mm 2 , 40 mm 2 or 50 mm 2 .

[0053] In other embodiments, the distance L between the drain hole 321 and the pressure switch 40 is in the range of 5 mm to 30 mm. Or, the area of the drain hole 321 is in the range of 20 mm 2from 0 to 50 mm 2 within the range (i.e., the area is greater than or equal to 20 mm 2 and less than or equal to 50 mm 2 ).

[0054] As Figures 1 to 6 shown, the height difference H1 between the installation surface 22 and the drainage surface 32 is within the range of 0.5 mm to 2.0 mm (i.e., the height difference H1 is greater than or equal to 0.5 mm and less than or equal to 2.0 mm), so that the liquid can be drained onto the drainage surface 32, and it is also convenient for the processing of the installation surface 22 and the drainage surface 32.

[0055] In this embodiment, the height difference H1 between the installation surface 22 and the drainage surface 32 is preferably 0.5 mm, 0.7 mm, 1.0 mm or 2.0 mm. The installation surface 22, the drainage surface 32, the water retaining flange 222, the side wall 10 of the heat preservation cover and the bottom wall 20 of the heat preservation cover are integrally formed by stretching.

[0056] This application also provides a cooking appliance, which includes a housing, a heat preservation cover arranged in the housing, and a pressure switch 40 arranged on the heat preservation cover. The heat preservation cover is the above-mentioned heat preservation cover. Since the above-mentioned heat preservation cover can solve the problem that the liquid in the related art easily flows into the pressure switch from the installation hole, making the pressure switch prone to poor induction, the cooking appliance with this heat preservation cover can solve the same technical problem.

[0057] The cooking appliance of this application is a pressure cooker. Of course, it can also be an electric rice cooker, an electric slow cooker, a stir-fry machine, a cooking machine and other appliances with other functions.

[0058] The inventor found that in the related art, the pressure switch 40 is fixed by installing a bracket on the lower surface of the bottom wall 20 of the heat preservation cover. The fixing of the bracket on the bottom wall 20 of the heat preservation cover requires the use of a resistance welding process, which increases the processing cost. Applying the technical solution in this application, the installation of the lower convex part 21 can facilitate the installation of the pressure switch 40 and reduce the processing cost.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0060] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure of the device. For example, if the device in the attached drawing is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding interpretations of the spatial relative descriptions used here will be made accordingly.

[0061] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0062] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat preservation cover, characterized in that: include: A bottom wall of the heat-insulating cover (20); A heat preservation cover side wall (10), wherein the lower end of the heat preservation cover side wall (10) is connected to the heat preservation cover bottom wall (20); Wherein, a mounting surface (22) for mounting a pressure switch (40) and a drainage surface (32) adjacent to and connected to the mounting surface (22) are provided on the upper surface of the bottom wall (20) of the heat insulation cover, and the height of the drainage surface (32) is lower than the height of the mounting surface (22).

2. The heat preservation cover according to claim 1, characterized in that: The drainage surface (32) is provided with drainage holes (321) penetrating the upper surface and the lower surface of the bottom wall (20) of the heat-insulating cover.

3. The heat preservation cover according to claim 1, characterized in that: The bottom wall (20) of the heat-insulating cover is provided with a drainage lower protrusion (30) located on one side of the mounting surface (22); the lower surface of the drainage lower protrusion (30) is arranged to protrude downward; the drainage lower protrusion (30) comprises a drainage side wall (31) and a drainage bottom wall connected to the lower end of the drainage side wall (31); the upper end of the drainage side wall (31) is connected to the mounting surface (22); and the upper surface of the drainage bottom wall forms the drainage surface (32).

4. The heat-insulating cover according to any one of claims 1 to 3, characterized in that: The mounting surface (22) is provided with a mounting hole (221) penetrating the upper surface and the lower surface of the mounting surface (22); a connecting piece (41) is provided in the mounting hole (221); the pressure switch (40) is connected to the mounting surface (22) via the connecting piece (41); a water retaining flange (222) is provided around the mounting hole (221); and the water retaining flange (222) is extended upward.

5. The heat preservation cover according to claim 3, characterized in that: The bottom wall (20) of the heat-insulating cover is also provided with a mounting lower protrusion (21), the lower surface of which is protruding downwards, the mounting surface (22) is arranged inside the mounting lower protrusion (21), and the mounting lower protrusion (21) is connected to the drainage lower protrusion (30).

6. The heat preservation cover according to claim 5, characterized in that: A positioning recess (23) for accommodating a positioning piece (42) of the pressure switch (40) is provided on the lower surface of the mounting lower protrusion (21), and the positioning piece (42) is positioned and matched with the positioning recess (23); and / or, The mounting lower protrusion (21) and the drainage lower protrusion (30) are arranged adjacent to each other in the circumferential direction of the bottom wall (20) of the heat insulation cover.

7. The heat-insulating cover according to any one of claims 1 to 3, characterized in that: The mounting surface (22) and / or the drainage surface (32) are planes.

8. The heat preservation cover according to claim 2, characterized in that: The distance (L) between the drainage hole (321) and the pressure switch (40) is in the range of 5 mm to 30 mm; and / or the area of ​​the drainage hole (321) is in the range of 20 mm 2 Up to 50mm 2 within the range.

9. The heat-insulating cover according to any one of claims 1 to 3, characterized in that: A height difference (H1) between the mounting surface (22) and the drainage surface (32) is in the range of 0.5 mm to 2.0 mm.

10. A cooking appliance comprising a housing, a heat preservation cover arranged in the housing, and a pressure switch (40) arranged on the heat preservation cover, characterized in that: The heat-insulating cover is the heat-insulating cover according to any one of claims 1 to 9.

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