Pot cover assembly and cooking utensil

Abstract

The utility model discloses a pot cover assembly and a cooking utensil, and relates to the technical field of cooking equipment, the pot cover assembly comprises a cover body, a heating assembly, a temperature controller and an elastic piece, the cover body is used for opening or closing a pot body; the heating assembly comprises a heat conduction substrate and a heating film, the heat conduction substrate is connected to the cover body, and the heating film is connected to the plate face, facing the cover body, of the heat conduction substrate; the temperature controller is arranged between the cover body and the heat conduction substrate in a liftable manner, is propped against the heating assembly, and is used for detecting and regulating the temperature of the heating assembly; the elastic piece is connected with the cover body and the temperature controller. According to the technical scheme, the stability of the overall structure of the pot cover assembly is guaranteed, and the practicability and reliability of the cooking utensil are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, and particularly relates to a pot cover assembly and a cooking appliance. Background Art

[0002] In the related art, existing cooking appliances such as rice cookers and steamers usually adopt a heating mechanism arranged inside the pot cover, so that under the action of the heating mechanism, the inner surface of the pot cover can be heated to the temperature of high-temperature water vapor, thereby reducing the temperature difference between the pot cover and the inside of the pot body and reducing the formation of condensed water on the inner surface of the pot cover due to the cooling of water vapor.

[0003] Generally, a temperature controller can be arranged on the pot cover to detect the temperature of the inner surface of the pot cover and then feedback and regulate the heating temperature of the heating mechanism, so that the temperature of the inner surface of the pot cover can better keep consistent with the temperature of the water vapor inside the pot body, preventing the generation of condensed water on the inner surface of the pot cover. However, in the existing pot covers, most of the temperature controllers are directly and rigidly connected inside the pot cover for detection and regulation. During transportation or assembly, it is easy to cause the temperature controller and the heating mechanism to be squeezed against each other, which may easily lead to damage to the temperature controller or the heating mechanism being crushed by the temperature controller, affecting the temperature control accuracy of the pot cover and reducing the practicability and reliability of the cooking appliance. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a pot cover assembly and a cooking appliance, aiming to connect the temperature controller with an elastic member to realize the elastic assembly of the temperature controller inside the pot cover assembly, prevent the mutual extrusion between the temperature controller and the heating component, ensure the overall structural stability of the pot cover assembly, and further improve the practicability and reliability of the cooking appliance.

[0005] To achieve the above purpose, the pot cover assembly proposed by the utility model includes a cover body, a heating component, a temperature controller, and an elastic member. The cover body is used to open or cover the pot body; the heating component includes a heat-conducting substrate and a heating film. The heat-conducting substrate is connected to the cover body, and the heating film is connected to the plate surface of the heat-conducting substrate facing the cover body; the temperature controller is disposed between the cover body and the heat-conducting substrate in a liftable manner and abuts against the heating component. The temperature controller is used to detect and regulate the temperature of the heating component; the elastic member connects the cover body and the temperature controller.

[0006] In one embodiment, a convex structure is provided on the outer periphery of the temperature controller, and the elastic member is disposed between the convex structure and the cover body and connects the convex structure and the cover body.

[0007] In one embodiment, the cover body is provided with a limiting structure, and the limiting structure cooperates with and abuts against the convex structure to guide and limit the temperature controller.

[0008] In one embodiment, the limiting structure is provided with a limiting post, the protruding structure is provided with a limiting hole, and the limiting post is inserted into the limiting hole.

[0009] In one embodiment, the protruding structure is flush with one end of the thermostat facing away from the cover body, the heat-conducting substrate is provided with a mica pressing piece, and the mica pressing piece is pressed against the protruding structure.

[0010] In one embodiment, the cover body is provided with a first power connection terminal, one end of the thermostat is provided with a second power connection terminal, and the second power connection terminal is inserted in cooperation with the first power connection terminal.

[0011] In one embodiment, a relief groove is provided on one side of the cover body facing the heating base body, and a part of the structure of the thermostat is movably arranged in the relief groove and is spaced from the inner wall of the relief groove.

[0012] In one embodiment, the pot lid assembly further includes a buffer member, and the buffer member is arranged between the heat-conducting substrate and the thermostat.

[0013] In one embodiment, the buffer member is attached to the surface of the heat-conducting substrate and covers the heating film, and the thermostat abuts against the buffer member.

[0014] In one embodiment, the thickness of the buffer member is defined as W, and W < 1 mm.

[0015] In one embodiment, the heating film forms a concentrated heating area, the concentrated heating area is arranged in the middle area of the heating film, and the thermostat is correspondingly arranged in the concentrated heating area. The distance between the geometric center of the heating film and the edge of the heating film is R, and the distance between the concentrated heating area and the edge of the heating film is greater than or equal to 1 / 4R.

[0016] In one embodiment, the pot lid assembly further includes a heat insulation layer, and the heat insulation layer is arranged between the heat-conducting substrate and the cover body. And / or, the elastic member is made of an elastic colloid material.

[0017] The present utility model also provides a cooking appliance, the cooking appliance includes a pot body and a pot lid assembly, the pot lid assembly is the pot lid assembly described above, and the pot lid assembly is used to open or cover the pot body.

[0018] The technical solution of the present utility model utilizes an elastic member to connect the cover body and the temperature controller, so that the temperature controller can be elastically abutted against the heating component under the action of the elastic member, enabling the temperature controller to better maintain contact with the heating component, ensuring the stability and reliability of the temperature controller in monitoring the temperature of the heating component, and realizing more stable and reliable regulation of the heating component by the temperature controller. In addition, the elastic member can also play a certain buffering role for the temperature controller, effectively avoiding the excessive mutual force between the temperature controller and the heating component during the transportation or use of the cooking appliance, which may cause damage to the heating film or cracking of the heating substrate with a certain probability, better ensuring the stable and reliable operation of the pot lid assembly, and improving the overall structural stability and reliability of the pot lid assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a top view of an embodiment of the pot lid assembly provided by the present utility model;

[0021] Figure 2 It is Figure 1 a cross-sectional view taken along line A-A in

[0022] Figure 3 It is Figure 2 a partial enlarged view at B in

[0023] Figure 4 It is Figure 1 a top view of an embodiment of the heating component and the temperature controller of the pot lid assembly of

[0024] Explanation of the reference numerals in the drawings:

[0025] 100, pot lid assembly; 10, cover body; 11, limiting post; 13, first power connection terminal; 15, avoidance groove; 30, heating component; 31, heat conduction substrate; 33, heating film; 331, concentrated heating area; 50, temperature controller; 51, convex structure; 511, limiting hole; 53, second power connection terminal; 70, elastic member; 90, heat insulation layer.

[0026] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0030] Generally, a temperature controller can be provided on the pot lid to detect the temperature of the inner surface of the pot lid, and then feedback and regulate the heating temperature of the heating mechanism, so that the temperature of the inner surface of the pot lid can better match the temperature of the water vapor in the pot body, preventing the generation of condensed water on the inner surface of the pot lid. However, in the existing pot lids, most of the temperature controllers are directly and rigidly connected inside the pot lid for detection and regulation. During transportation or assembly, it is easy to cause the temperature controller and the heating mechanism to be squeezed against each other, which may easily lead to damage to the temperature controller or the heating mechanism being crushed by the temperature controller, affecting the temperature control accuracy of the pot lid and reducing the practicability and reliability of the cooking appliance. To solve the above problems, the present utility model proposes a pot lid assembly 100.

[0031] Please refer to Figures 1 to 4, in an embodiment of the present utility model, the pot lid assembly 100 includes a lid body 10, a heating assembly 30, a thermostat 50, and an elastic member 70. The lid body 10 is used to open or close the pot body; the heating assembly 30 includes a heat conduction substrate 31 and a heating film 33. The heat conduction substrate 31 is connected to the lid body 10, and the heating film 33 is connected to the plate surface of the heat conduction substrate 31 facing the lid body 10; the thermostat 50 is disposed between the lid body 10 and the heat conduction substrate 31 in a liftable manner and abuts against the heating assembly 30. The thermostat 50 is used to detect and regulate the temperature of the heating assembly 30; the elastic member 70 connects the lid body 10 and the thermostat 50.

[0032] It can be understood that during the operation of the cooking appliance, the water in the ingredients in the pot body evaporates under the action of a certain amount of heat to generate high-temperature water vapor. At this time, by installing the heating assembly 30 on the lid body 10 for opening and closing the pot body, the heat conduction substrate 31 of the heating assembly 30 can be disposed on the inner lid surface of the lid body 10 when the lid body 10 closes the pot body, so that the heat conduction substrate 31 is exposed in the pot body when the lid body 10 closes the pot body. Furthermore, by providing the heating film 33 on the heat conduction substrate 31, the heat generated by the energization of the heating film 33 can be conducted on the heat conduction substrate 31. By regulating the working power of the heating film 33, the temperature reached by the heat conduction substrate 31 under the action of the heat of the heating film 33 can be made equal to the temperature of the water vapor, thereby effectively preventing the water vapor from condensing when spreading in the pot body by contacting the inner lid surface with a certain temperature difference to form condensed water adhering to the inner lid surface of the lid body 10, preventing condensed water from dripping on the ingredients when the user opens and closes the pot lid assembly 100 and affecting the taste of the ingredients, and ensuring the stable and reliable cooking effect of the cooking appliance.

[0033] In the present application, a thermostat 50 can be provided between the lid body 10 and the heat conduction substrate 31 of the pot lid assembly 100. The thermostat 50 can detect the temperature of the heating assembly 30, and can use the built-in program to issue corresponding control instructions to adjust the working power of the heating film 33 when the detected temperature reaches various conditions, so as to realize the temperature regulation of the heating assembly 30 and ensure that the temperature reached by the heating assembly 30 is consistent with the temperature of the water vapor in the pot body. The thermostat 50 can set the temperature measuring element on the end surface facing the heating assembly 30. When the pot lid assembly 100 is assembled, the temperature measuring element of the thermostat 50 can be abutted against the heating film 33 or the heat conduction substrate 31, so that the thermostat 50 can more directly and accurately obtain the heating temperature of the heating assembly 30 and ensure the stability of the temperature regulation of the heating assembly 30. Among them, when the thermostat 50 abuts against the heat conduction substrate 31 for temperature measurement, the heat conduction substrate 31 can be made of a material with better heat conduction effect to better ensure the temperature control accuracy of the thermostat 50.

[0034] By connecting the cover body 10 and the thermostat 50 using the elastic member 70, so that the thermostat 50 can be arranged between the cover body 10 and the heat-conducting substrate 31 in a liftable and movable manner, during the assembly process of the pot lid assembly 100, when the thermostat 50 is under the action of the heating component 30 (during transportation or assembly, it is easy to cause the thermostat 50 and the heating component 30 to be squeezed against each other), the thermostat 50 squeezes the elastic member 70, causing the elastic member 70 to undergo a certain elastic deformation. Then, under the elastic force of the elastic member 70, the contact between the thermostat 50 and the heating component 30 can be stably maintained, avoiding poor contact between the thermostat 50 and the heating component 30 and affecting the temperature measurement accuracy of the thermostat 50, and better improving the stability and reliability of the temperature control of the heating component 30 by the thermostat 50. Secondly, the heating component 30 can use a heating film 33 made of a material with better heat generation efficiency such as graphene to be attached to the heating substrate. The heating film 33 arranged on the heating substrate can withstand a large pressure, avoiding damage to the heating film 33 under the action of a large pressure and reducing the stability of heating; at the same time, when the heating substrate is made of a material with good heat conduction performance such as glass, the heating substrate also cannot withstand a large pressure, avoiding cracking of the heating substrate under the action of a large pressure. Therefore, by connecting the cover body 10 and the thermostat 50 using the elastic member 70 and arranging the thermostat 50 between the cover body 10 and the heat-conducting substrate 31 in a liftable and movable manner, it is also beneficial to achieve elastic contact between the thermostat 50 and the heating component 30, so that when the pot lid assembly 100 as a whole is under a large external force during transportation or use, the elastic member 70 can be used to buffer the interaction force between the thermostat 50 and the heating component 30, effectively avoiding rigid contact between the thermostat 50 and the heating component 30 and having a certain probability of crushing the heating film 33 or crushing the heating substrate during transportation or use, ensuring the temperature measurement and control accuracy of the thermostat 50, and at the same time ensuring the stable operation of the heating component 30, effectively improving the overall structural stability and reliability of the pot lid assembly 100.

[0035] Among them, the thermostat 50 can be a snap-action thermostat 50. One or more preset temperatures can be set in the control program of the thermostat 50. Then, when the thermostat 50 monitors that the temperature of the heating component 30 reaches the preset first temperature, the thermostat 50 can issue an instruction to control the heating film 33 to cut off the power, so that the heating component 30 cools down; when the temperature of the heating component 30 drops to the preset second temperature, the thermostat 50 can issue an instruction to control the heating film 33 to be powered on, ensuring that the temperature of the heating component 30 can be kept within a certain range, further improving the structural stability and reliability of the pot lid assembly 100. Alternatively, the thermostat 50 can be a thermistor thermostat 50 or a thermocouple thermostat 50. The thermistor or thermocouple can be used to sense the temperature of the heating component 30. When the thermostat 50 accurately monitors that the temperature of the heating component 30 reaches the set temperature value, the preset program or chip is used to control the heating film 33 to heat intermittently, so that the temperature of the heating component 30 is maintained at the set temperature for operation, realizing the temperature control of the heating component 30 by the thermostat 50.

[0036] The technical solution of the present utility model connects the cover body 10 and the thermostat 50 by using the elastic member 70. Under the action of the elastic member 70, the thermostat 50 can be elastically abutted against the heating component 30, so that the thermostat 50 can better maintain contact with the heating component 30, ensuring the stability and reliability of the thermostat 50 in monitoring the temperature of the heating component 30, and realizing more stable and reliable control of the heating component 30 by the thermostat 50. In addition, the elastic member 70 can also play a certain buffering role for the thermostat 50. During the transportation or use of the cooking appliance, it can effectively prevent the excessive interaction force between the thermostat 50 and the heating component 30 from causing damage to the heating film 33 or cracking of the heating substrate with a certain probability, better ensuring the stable and reliable operation of the pot lid assembly 100, and improving the overall structural stability and reliability of the pot lid assembly 100.

[0037] Refer to Figure 3 and Figure 4 In the embodiment of the present utility model, a convex structure 51 is provided on the outer periphery of the thermostat 50, and the elastic member 70 is arranged between the convex structure 51 and the cover body 10 and connects the convex structure 51 and the cover body 10.

[0038] In this embodiment, the thermostat 50 may include a housing and components assembled inside the housing, so that the thermostat 50 can better ensure the stable operation of the internal components under the protection of the housing, and achieve accurate temperature measurement and control of the thermostat 50. The thermostat 50 may be provided with a convex structure 51 on the outer periphery of the housing. The convex structure 51 may be parallel to the heat-conducting substrate 31 or the ear plate or boss provided on the inner cover surface of the cover body 10. At this time, the elastic member 70 may be disposed between the convex structure 51 and the inner cover surface of the cover body 10, and the elastic member 70 may be connected to the convex structure 51 and the cover body 10, so that the elastic telescopic direction of the elastic member 70 is consistent with the lifting and moving direction of the thermostat 50. Furthermore, when the thermostat 50 moves along the lifting direction, it can drive the elastic member 70 to elastically expand and contract, so that it can better avoid excessive instantaneous impact force of the thermostat 50 on the heating assembly 30 under the elastic buffering action of the elastic member 70, effectively prevent the heating assembly 30 from being crushed by the thermostat 50, and further improve the structural stability and reliability of the pot lid assembly 100.

[0039] Among them, the thermostat 50 may be provided with convex structures 51 on opposite sides respectively. At this time, elastic members 70 may be provided on the two convex structures 51 respectively, so that the thermostat 50 can lift and move more smoothly under the action of the two elastic members 70, and ensure the stable operation of the thermostat 50 and the heating assembly 30.

[0040] Refer to Figure 3 , in the embodiment of the present utility model, the cover body 10 is provided with a limiting structure, and the limiting structure cooperates with and abuts against the convex structure 51 to guide and limit the thermostat 50.

[0041] In this embodiment, the cover body 10 may be provided with a limiting structure on the inner cover surface. The extending direction of the limiting structure may be consistent with the lifting and moving direction of the thermostat 50. And the limiting structure may be a sleeve structure set corresponding to the size of the thermostat 50, or may be a block structure or a column structure protruding on the inner cover surface. At this time, the limiting structure may cooperate with and abut against the convex structure 51 of the thermostat 50. It may make the limiting structure cooperate with and abut against the outer side wall of the convex structure 51, or holes may be opened on the convex structure 51, so that the limiting structure is inserted into the convex structure 51 and abuts against the inner wall of the hole on the convex structure 51. Furthermore, under the cooperation and abutting action of the limiting structure and the convex structure 51, the limiting structure can be used to limit and guide the lifting and moving of the thermostat 50, further improve the moving stability and reliability of the thermostat 50, prevent the thermostat 50 from shifting during the moving process, ensure the monitoring accuracy of the thermostat 50, and further improve the practicability and reliability of the pot lid assembly 100.

[0042] Refer to Figure 3 and Figure 4, in the embodiment of the present utility model, the limiting structure is provided with a limiting post 11, the protruding structure 51 is provided with a limiting hole 511, and the limiting post 11 is inserted into the limiting hole 511.

[0043] In this embodiment, the limiting structure can be set in the structural form of the limiting post 11. At this time, the protruding structure 51 can be provided with a limiting hole 511 corresponding to the diameter of the limiting post 11 inside the protruding structure 51, or a recessed notch can be provided on the outer side wall of the protruding structure 51 to form the limiting hole 511, so that the limiting post 11 can be inserted at the limiting hole 511 and abut against the inner wall of the hole of the limiting hole 511, realizing the limiting and guiding of the lifting movement of the thermostat 50 by the limiting post 11, effectively avoiding the deviation of the thermostat 50 during the movement process, ensuring the temperature measurement stability and reliability of the thermostat 50, and further improving the overall structural stability and reliability of the pot lid assembly 100.

[0044] In the embodiment of the present utility model, the protruding structure 51 is flush with the end of the thermostat 50 facing away from the lid body 10, the heat-conducting substrate 31 is provided with a mica pressing sheet, and the mica pressing sheet is pressed against the protruding structure 51.

[0045] In this embodiment, the protruding structure 51 can be a plate structure provided on the outer side wall of the end of the thermostat 50 facing away from the lid body 10, and the surface of the protruding structure 51 facing the heating assembly 30 can be flush with the end face of the thermostat 50. At this time, the heating assembly 30 can be provided with a mica pressing sheet on the surface of the heat-conducting substrate 31 facing the inner cover surface of the lid body 10 to insulate the heat-conducting substrate 31, prevent the heat generated by the heating assembly 30 from being transferred to the lid body 10, and an opening for the thermostat 50 to pass through can be provided on the mica pressing sheet to ensure that the mica pressing sheet is stably close to the heat-conducting substrate 31 for heat insulation. Since the mica pressing sheet has a certain elasticity, during the assembly process, the mica pressing sheet can be used to press the protruding structure 51 of the thermostat 50 and then connected to the heat-conducting substrate 31. Furthermore, under the action of the mica pressing sheet, the thermostat 50 can be better pressed on the heating assembly 30, and the mutual contact between the thermostat 50 and the heating assembly 30 can be better maintained, further improving the temperature measurement stability and reliability of the thermostat 50.

[0046] Refer to Figure 3 , in the embodiment of the present utility model, the lid body 10 is provided with a first power connection terminal 13, one end of the thermostat 50 is provided with a second power connection terminal 53, and the second power connection terminal 53 is inserted and matched with the first power connection terminal 13.

[0047] In this embodiment, a first power connection terminal 13 may be provided inside the cover body 10. The first power connection terminal 13 may be a socket with an insertion interface exposed on the inner cover surface of the cover body 10, or a plug protruding from the inner cover surface of the cover body 10. At this time, the thermostat 50 may be provided with a second power connection terminal 53 at one end facing the cover body 10. The second power connection terminal 53 may be a plug or a socket that mates with the first power connection terminal 13. Then, when assembling the pot lid assembly 100, by mating and plugging the second power connection terminal 53 of the thermostat 50 with the first power connection terminal 13 on the cover body 10, the thermostat 50 can be electrically connected to the control system inside the cover body 10, achieving convenient and stable power connection of the thermostat 50, and further improving the assembly convenience and practicality of the pot lid assembly 100. Among them, the conductive contacts between the first power connection terminal 13 and the second power connection terminal 53 may be set to have a certain length along the moving direction of the thermostat 50, so that during the lifting and moving process of the thermostat 50 between the cover body 10 and the heat conduction substrate 31, the stable electrical connection between the first power connection terminal 13 and the second power connection terminal 53 can be ensured, ensuring the stable operation of the thermostat 50, and further improving the structural stability and reliability of the pot lid assembly 100.

[0048] Refer to Figure 3 , in the embodiment of the present utility model, an avoidance groove 15 is provided on one side of the cover body 10 facing the heating base body. A part of the structure of the thermostat 50 is movably arranged in the avoidance groove 15 and is spaced from the inner wall of the avoidance groove 15.

[0049] In this embodiment, the cover body 10 may be provided with an avoidance groove 15 on the inner cover surface facing the heating substrate. The groove width of the avoidance groove 15 may be set to be larger than the diameter of the thermostat 50, and a certain distance may be set between the bottom wall of the avoidance groove 15 and the end face of the thermostat 50 facing the cover body 10, so that after the pot lid assembly 100 is assembled, a part of the structure of the thermostat 50 can be located in the avoidance groove 15, and the thermostat 50 can be kept at a certain distance from each inner wall of the avoidance groove 15. Then, when the thermostat 50 moves up and down between the cover body 10 and the heating assembly 30, the thermostat 50 can be effectively prevented from contacting the inner wall of the avoidance groove 15, so that the thermostat 50 can move stably under the buffering action of the elastic member 70, reducing the instantaneous impact force of the thermostat 50 on the heating assembly 30. By recessing the avoidance groove 15 on the cover body 10, the avoidance groove 15 can be used to accommodate part of the thermostat 50 to reduce the gap between the cover body 10 and the heating assembly 30, facilitating the miniaturization design of the pot lid assembly 100, and further improving the practicality and reliability of the pot lid assembly 100.

[0050] In the embodiment of the present utility model, the pot lid assembly 100 further includes a buffer member, and the buffer member is arranged between the heat conduction substrate 31 and the thermostat 50.

[0051] In this embodiment, the buffer member can be made of a material having certain elastic or flexible properties and a hardness less than that of the temperature measuring element of the thermostat 50 and the heating film 31, and the buffer member can have good heat conduction performance, so that the buffer member can stably conduct the heat generated by the heating film 33 to the thermostat 50 for temperature measurement. Furthermore, the buffer member is arranged between the heat conduction substrate 31 and the thermostat 50, which can play a role in isolating the direct contact between the thermostat 50 and the heating film 33, and is beneficial to better avoiding the friction between the thermostat 50 and the heating film 33 due to vibration during transportation or use, preventing the wear of the temperature measuring element of the thermostat 50 and the heating film 33, realizing the protection of the thermostat 50 and the heating film 33, being beneficial to better improving the service life of the pot lid assembly 100, and further improving the structural stability and reliability of the pot lid assembly 100.

[0052] In an embodiment of the present utility model, the buffer member is attached to the surface of the heat conduction substrate 31 and is arranged to cover the heating film 33, and the thermostat 50 abuts against the buffer member.

[0053] In this embodiment, the heating assembly 30 can cover the buffer member on the surface of the heat conduction substrate 31. The buffer member can be a coating applied on the surface of the heat conduction substrate 31 facing the lid body 10 and the surface of the heating film 33; or can be a paste film made of materials such as polyimide or heat-resistant adhesive tape, so that the buffer member is pasted on the surface of the heat conduction substrate 31 facing the lid body 10 and covers the heating film 33. Furthermore, when the pot lid assembly 100 is assembled, by making the temperature measuring element of the thermostat 50 abut against the buffer member, the buffer member can stably conduct heat to the thermostat 50 for temperature measurement, and at the same time, the buffer member can effectively isolate the mutual friction between the thermostat 50 and the heating film 33, better preventing the heating film 33 from being worn, and ensuring the contact protection between the buffer member and the thermostat 50 and the heating assembly 30. The buffer member can also have certain insulation performance, which is beneficial to better improving the connection stability and reliability between the heat conduction substrate 31 and the heating film 33 under the action of the buffer member, and at the same time, can avoid the direct electrical contact between the heating film 33 and the lid body 10, reduce the potential electrical hazards, and further improve the practicability and reliability of the pot lid assembly 100.

[0054] In some embodiments, when the buffer member is arranged on the thermostat 50, the buffer member can also be a coating structure formed by coating a coating on the end face of the thermostat 50 facing the heat conduction substrate, or can be a paste film made of materials such as polyimide or heat-resistant adhesive tape, so that the buffer member adheres to the end face of the thermostat 50 facing the heat conduction substrate, ensuring the contact protection between the buffer member and the thermostat 50 and the heating assembly 30, and further improving the overall structural stability and reliability of the pot lid assembly 100.

[0055] Further, in the embodiment of the present utility model, the thickness of the buffer member is defined as W, and W < 1 mm.

[0056] In this embodiment, the thickness of the buffer member can be limited within a range less than 1 mm. For example, W = 0.9 mm, 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0.4 mm, 0.3 mm, etc. Within this range, the thickness of the buffer member will not be too large, avoiding a certain temperature difference between the surface of the buffer member and the heating film 33, so that the surface temperature of the buffer member and the heating temperature of the heating film 33 can be better kept consistent, ensuring that the thermostat 50 can quickly and accurately measure the heating temperature of the heating component 30, achieving a more stable and reliable temperature control effect on the heating component 30, and further improving the practicability and reliability of the pot lid assembly 100. Among them, the thickness of the buffer member can preferably be limited within a range less than 0.5 mm. Within this range, the temperature difference between the buffer member and the heating film 33 can be better reduced, better ensuring the temperature measurement accuracy of the thermostat 50, and further improving the temperature control stability and reliability of the thermostat 50.

[0057] Refer to Figure 4 , in the embodiment of the present utility model, the heating film 33 is formed with a concentrated heating area 331. The concentrated heating area 331 is arranged in the middle area of the heating film 33, and the thermostat 50 is arranged in the concentrated heating area 331. The distance between the geometric center of the heating film 33 and the edge of the heating film 33 is R, and the distance between the concentrated heating area 331 and the edge of the heating film 33 is greater than or equal to 1 / 4R.

[0058] In this embodiment, the heating film 33 can be formed by spirally laying a strip-shaped heating material on the heat-conducting substrate 31. Due to factors such as the laying process of the heating film 33 and the avoidance of other components, there are certain differences in the heating areas distributed by the heating film 33 on the entire heat-conducting substrate 31. At this time, the area enclosed by the middle of the heating film 33 and the edge of the heating film 33 with a distance greater than or equal to 1 / 4R can be set as the concentrated heating area 331, where R represents the distance from the geometric center of the heating film 33 to the edge of the heating film 33. By setting the thermostat 50 corresponding to the concentrated heating area 331 of the heating film 33, since the heating temperature of the concentrated heating area 331 of the heating film 33 is relatively high, the thermostat 50 can quickly monitor the maximum heat generation of the heating film 33, achieving a more rapid and stable temperature control effect on the heating film 33, effectively avoiding a certain difference between the temperature monitored by the thermostat 50 and the maximum heating temperature of the heating film 33, which may cause the heating component 30 to overheat with a certain probability, preventing the cover body 10 from being affected by a large amount of heat, ensuring stable heating within the pot lid assembly 100, and further improving the practicability and reliability of the pot lid assembly 100.

[0059] Wherein, when the concentrated heating area 331 of the heating film 33 is larger than the area of the temperature measuring element of the thermostat 50, the thermostat 50 can be arranged at the thermal field center position of the concentrated heating area 331 of the heating film 33, or can be arranged within a range of 10 mm from the thermal field center position of the concentrated heating area 331, so that the thermostat 50 can more quickly and accurately monitor the maximum temperature of the heating assembly 30, and achieve a more accurate and reliable temperature control effect.

[0060] Refer to Figure 2 and Figure 3 In the embodiment of the present utility model, the pot lid assembly 100 further includes a heat insulation layer 90, and the heat insulation layer 90 is arranged between the heat conduction substrate 31 and the lid body 10. And / or, the elastic member 70 is made of an elastic colloid material.

[0061] In this embodiment, by arranging the heat insulation layer 90 between the heat conduction substrate 31 and the lid body 10, the heat insulation layer 90 can be made of a material with good heat insulation performance. Under the action of the heat insulation layer 90, the heat generated on the heating assembly 30 can be effectively isolated from being released and radiated to the lid body 10, avoiding the lid body 10 being affected by the temperature of the heating assembly 30, further improving the overall structural stability and reliability of the pot lid assembly 100, and facilitating user use.

[0062] In addition, the elastic member 70 can be made of an integral elastic colloid material, and the elastic colloid material can be silicone or rubber and other materials with good heat resistance. The elastic member 70 made of the elastic colloid material can have good integrity, which is beneficial to better improving the service life of the elastic member 70, better reducing the probability of the elastic member 70 being strained, ensuring the elastic action of the elastic member 70 on the thermostat 50, and further improving the overall structural stability and reliability of the pot lid assembly 100.

[0063] The present utility model also proposes a cooking appliance, which includes a pot body and the pot lid assembly 100. The specific structure of the pot lid assembly 100 refers to the above embodiment. Since this cooking appliance adopts all the technical solutions of the above all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0064] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A pot lid assembly, characterized in that, Comprising: A lid body for opening or closing a pot body; A heating assembly including a heat-conducting substrate and a heating film, the heat-conducting substrate being connected to the lid body, and the heating film being connected to the surface of the heat-conducting substrate facing the lid body; A thermostat which is disposed between the lid body and the heat-conducting substrate in a liftable manner and abuts against the heating assembly, and the thermostat is used for detecting and regulating the temperature of the heating assembly; And An elastic member connecting the lid body and the thermostat.

2. The pot lid assembly according to claim 1, characterized in that, A convex structure is provided on the outer periphery of the thermostat, and the elastic member is disposed between the convex structure and the lid body and connects the convex structure and the lid body.

3. The pot lid assembly according to claim 2, characterized in that, The lid body is provided with a limiting structure which cooperates with and abuts against the convex structure to guide and limit the thermostat.

4. The pot lid assembly according to claim 3, wherein The limiting structure is provided with a limiting post, and the convex structure is provided with a limiting hole, and the limiting post is inserted into the limiting hole.

5. The pot lid assembly according to claim 2, wherein The convex structure is flush with the end of the thermostat facing away from the lid body, and the heat-conducting substrate is provided with a mica pressing piece which presses against the convex structure.

6. The pot lid assembly according to claim 1, characterized in that, The lid body is provided with a first electrical connection terminal, and one end of the thermostat is provided with a second electrical connection terminal, and the second electrical connection terminal is in mating insertion with the first electrical connection terminal.

7. The pot lid assembly according to any one of claims 1 to 6, characterized in that, A relief groove is provided on one side of the lid body facing the heating base, and a part of the structure of the thermostat is movably disposed in the relief groove and is spaced from the inner wall of the relief groove.

8. The pot lid assembly according to any one of claims 1 to 6, characterized in that, The pot lid assembly further includes a buffer member disposed between the heat-conducting substrate and the thermostat.

9. The pot lid assembly according to claim 8, characterized in that, The buffer member is attached to the surface of the heat-conducting substrate and covers the heating film, and the thermostat abuts against the buffer member.

10. The pot lid assembly according to claim 8, characterized in that, Define the thickness of the buffer member as W, and W < 1 mm.

11. The pot lid assembly according to any one of claims 1 to 6, characterized in that, The heating film forms a concentrated heating area which is disposed in the middle area of the heating film, and the thermostat is disposed in the concentrated heating area; The distance between the geometric center of the heating film and the edge of the heating film is R, and the distance between the concentrated heating area and the edge of the heating film is greater than or equal to 1 / 4R.

12. The pot lid assembly according to any one of claims 1 to 6, characterized in that The pot lid assembly further includes a heat insulation layer disposed between the heat-conducting substrate and the lid body; And / or, the material of the elastic member is an elastic colloid material.

13. A cooking appliance, characterized in that, The cooking appliance includes a pot body and a pot lid assembly, the pot lid assembly is the pot lid assembly according to any one of claims 1 to 12, and the pot lid assembly is used for opening or closing the pot body.

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