Heating plate structure and electric cooker

Abstract

The present application relates to a heating plate structure and an electric cooker, comprising a base; a heating plate, which is connected to the base; and a heat-conducting member, which is covered and arranged on the heating plate and has a heat-conducting surface facing away from the heating plate; the heating plate comprises a central area and a peripheral area surrounding the central area, and the heat-conducting member comprises a heat-conducting bag, which comprises a wrapping layer of soft material and a heat-conducting substance that can be flowably filled in the wrapping layer; the central area bulges relative to the peripheral area when heated and forms a certain height difference, and the heat-conducting substance flows freely in the wrapping layer driven by the height difference until the heat-conducting surface does not deform. In the present application, after the central area of ​​the heating plate bulges when heated, the heat-conducting substance (such as heat-conducting oil) in the heat-conducting bag will flow freely to the surroundings until it reaches a state of equilibrium, so that the heat-conducting surface can still fit tightly with the bottom of the functional plate, and the heat of the heating plate is transferred through the heat-conducting member, and the heat-conducting substance can make the heat distribution more uniform.

Description

Technical Field

[0001] The invention belongs to the field of cookers, and in particular relates to a heating plate structure and an electric cooker. Background Art

[0002] Electric cookers are cookers that use electrical energy to convert into internal energy for cooking. They are widely used in people's daily lives because of their convenience. Among them, when functional plates such as baking trays, six-round plates, and meatball plates are heated and used, the middle area of ​​the heating plate will bulge relative to the outer area due to its own heat expansion and deformation, so that the functional plate is lifted up; at this time, the central area of ​​the functional plate is in direct contact with the bulging central area of ​​the heating plate, and the temperature is higher, while the outer area of ​​the functional plate is suspended relative to the heating plate and the temperature is lower, resulting in uneven heating of the functional plate, which ultimately causes the food in the middle of the pot to burn first, while the food on both sides is not yet cooked. Summary of the invention

[0003] Based on this, in order to solve the above problems, a heating plate structure with uniform heating is provided.

[0004] It is also necessary to provide an electric cooker with the heating plate structure.

[0005] A heating plate structure, comprising:

[0006] Base;

[0007] A heating plate, connected to the base; and

[0008] A heat-conducting member, which is disposed on the heating plate and has a heat-conducting surface facing away from the heating plate;

[0009] The heating plate includes a central area and a peripheral area surrounding the central area, the heat conducting member includes a heat conducting bag, and the heat conducting bag includes a wrapping layer of a soft material and a heat conducting substance that can flowably fill the wrapping layer;

[0010] The central area bulges relative to the peripheral area when heated to form a certain height difference. Driven by the height difference, the heat-conducting material flows freely in the wrapping layer until the heat-conducting surface does not deform.

[0011] In one embodiment, the wrapping layer is made of high temperature resistant rubber material.

[0012] In one embodiment, the heat-conducting material is a heat-conducting fluid filled in the wrapping layer.

[0013] In one embodiment, the heat-conducting material is heat-conducting oil filled in the wrapping layer.

[0014] In one embodiment, the heat conductive member further comprises a protective layer having heat conductive properties, wherein the protective layer is attached to the surface of the heat conductive pack and defines a receiving space for receiving the heat conductive pack between the protective layer and the heat generating plate.

[0015] In one embodiment, the heating plate has a heating surface for placing the heat-conducting pack, and the outer edge of the heating surface protrudes to form a limiting wall;

[0016] The heat-conducting package is placed in the space surrounded by the limiting walls, the protective layer is attached to the surface of the heat-conducting package and defines the containing space together with the limiting walls and the heating surface.

[0017] In one embodiment, the protective layer is a steel wire braided layer.

[0018] In one of the embodiments, a fixing column is formed on one of the heating plate and the base, and a fixing hole matched with the fixing column is formed on the other.

[0019] In one embodiment, fixing columns are formed protruding around the surface of the heating plate facing the base, and fixing holes cooperating with the fixing columns are formed on the surface of the base facing the heating plate.

[0020] An electric cooker comprises a functional plate and the heating plate structure described above, wherein the functional plate is placed on the heating surface of the heating plate structure, and the bottom of the functional plate is always in close contact with the heat-conducting surface.

[0021] In the present application, after the central area of ​​the heating plate swells up due to heat, the heat-conducting material (such as heat-conducting oil) in the heat-conducting bag will flow freely to the surroundings until it reaches a balance state, so that the heat-conducting surface can still fit tightly with the bottom of the functional plate, and the heat of the heating plate is transferred through the heat-conducting parts, and the heat-conducting material can make the heat distribution more even. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of an electric cooker according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of a heating plate in the electric cooker shown;

[0024] Figure 3 for Figure 2 An enlarged schematic diagram of part A of the electric cooker shown. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element between the two. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element between the two at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the electric cooker 100 includes a heating plate structure 10 and a functional plate 30 placed on the heating plate structure 10. The heating plate structure 10 is used to generate heat and transfer the heat to the functional plate 30 when connected to an external power source, so as to heat the food in the functional plate 30. In this specific embodiment, the electric cooker 100 is an electric hot pot, and the functional plate 30 is used to cook the food. It can be understood that in some other examples, the electric cooker 100 can also be an electric grill pan, etc., and the corresponding functional plate 30 is used to fry, deep-fry, etc. the food.

[0029] The heating plate structure 10 includes a base 11, a heating plate 13 and a heat-conducting member 15. The base 11 is used to provide support for the electric cooker 100. The heating plate 13 is connected to the base 11 to connect to an external power source and generate heat. The heat-conducting member 15 is covered on the heating plate 13 and has a heat-conducting surface 150 facing away from the heating plate 13. The functional plate 30 is placed on the heat-conducting surface 150 to cook the food placed therein by using the heat generated by the heating plate 13 and the heat transferred by the heat-conducting member 15.

[0030] Please refer to Figure 1 A fixing column 130 is formed on one of the heating plate 13 and the base 11, and a fixing hole 110 is formed on the other to match the fixing column 130. An external fixing member (such as a screw, etc.) passes through the fixing hole 110 and is locked in the fixing column 130 to fix the heating plate 13 on the base 11.

[0031] In this specific embodiment, the surface of the heating plate 13 facing the base 11 is protruded with a fixing column 130, and the surface of the base 11 facing the heating plate 13 is formed with a fixing hole 110 that cooperates with the fixing column 130. More specifically, the fixing column 130 is protruded around the surface of the heating plate 13 facing the base 11, that is, the fixing column 130 is formed on the outer edge of the heating plate 13. It can be understood that in some other embodiments, the setting position of the fixing column 130 can be determined according to needs, which is not limited here.

[0032] Please see Figure 2 and Figure 3 The heating plate 13 includes a central area 132 and a peripheral area 134 surrounding the central area 132. The heat conducting member 15 includes a heat conducting bag 151a, and the heat conducting bag 151a includes a wrapping layer 152 of a soft material and a heat conducting substance 154 filled in the wrapping layer 152 in a flowable manner.

[0033] Since the heating plate 13 is usually made of a material that heats up quickly (such as aluminum alloy, etc.), and the temperature of the middle area 132 rises quickly while the temperature of the peripheral area 134 rises slowly when the heating plate 13 is working, the central area 132 will bulge relative to the peripheral area 134 after being heated, and a certain height difference will be formed between the two. At this time, the heat-conducting material 154 flows freely in the wrapping layer 152 driven by the height difference, that is, at least part of the heat-conducting material 154 flows from the top of the central area 132 of the heating plate 13 to the top of the peripheral area 134, so that the heat-conducting surface 150 does not deform, that is, the heat-conducting surface 150 always maintains the state as in the cold state, so that the heat-conducting surface 150 is tightly fitted with the bottom of the functional plate 30 in both the cold state and the hot state.

[0034] At the same time, the heat of the heating plate 13 is transferred to the functional plate 30 through the heat conductor 15, wherein the fluid heat conductive material can make the heat distribution of the entire heat conductive surface 150 more uniform, and also realize uniform heating of the functional plate 30, thereby avoiding the situation where the central area of ​​the functional plate 30 is burnt while the food inside the outer area is not yet cooked through.

[0035] Preferably, the wrapping layer 152 is made of a high temperature resistant rubber material, and the heat conductive substance 154 is a heat conductive fluid filled in the wrapping layer 152. The heat conductive substance 154 can be a heat conductive fluid that is liquid in both cold and hot states, or a heat conductive fluid that is solid in cold state and can be melted into liquid in hot state, which is not limited here.

[0036] In this specific embodiment, the heat conducting material 154 is heat conducting oil filled in the wrapping layer 152. It can be understood that in some other embodiments, the heat conducting material 154 can also be alkylbenzene type, alkylnaphthalene type, alkylbiphenyl type, mineral type, etc., which is specifically selected according to the maximum temperature of the heating plate 13.

[0037] The heating plate structure 10 further includes a protective layer 156 with heat conductivity, which is wrapped around the heat-conducting pack 151a to prevent the wrapping layer 152 from being rubbed or scratched. At the same time, the protective layer 156 also has heat conductivity and fits tightly with the bottom of the functional plate 30 to transfer the heat of the entire heat-conducting pack 151a to the functional plate 30 (the heat-conducting surface 150 is the surface where the protective layer 156 contacts the functional plate 30).

[0038] The protective layer 156 is attached to the surface of the heat-conducting pack 151a and defines a receiving space 170 for receiving the heat-conducting element 15 between the protective layer 156 and the heating plate 13. In other words, the protective layer 156 and the heating plate 13 wrap the heat-conducting pack 151a together, and the plane where the protective layer 156 is located can change synchronously according to the flow of the heat-conducting material 154 in the heat-conducting pack 151a, so as to ensure that the heat-conducting surface 150 where the protective layer 156 contacts the functional plate 30 remains unchanged at all times.

[0039] Specifically, the heating plate 13 has a heating surface 136 (see FIG. Figure 1 The outer edge of the heating surface 136 protrudes to form a limiting wall (not shown). The heat conducting pack 151a is accommodated in the space surrounded by the limiting wall, and the protective layer 156 is attached to the surface of the heat conducting pack 151a and defines the above-mentioned accommodation space together with the limiting wall and the heating surface 136.

[0040] In this specific embodiment, the protective layer 156 is a steel wire braided layer, the middle part of the steel wire braided layer covers the top surface of the heat conductive pack 151a, and the edge of the steel wire braided layer can be fixedly connected to the heating plate 13 or the limiting wall by riveting, crimping, etc. It can be understood that in some other embodiments, the protective layer 156 can also be made of other materials, as long as it has the characteristics of high temperature resistance, heat conduction, and easy bending, which is not limited here.

[0041] In the present application, after the central area 132 of the heating plate 13 swells up due to the heat, the heat-conducting material 154 (such as heat-conducting oil) in the heat-conducting bag 151a will flow freely to the surroundings until it reaches a balance state, so that the heat-conducting surface 150 can still fit tightly with the bottom of the functional plate 30, and the heat of the heating plate 13 is transferred through the heat-conducting component 15, and the heat-conducting material 154 can make the heat distribution more even.

[0042] The present application also provides an electric cooker 100 with the above-mentioned heating plate structure 10 , which has all the technical features of the above-mentioned heating plate structure 10 and thus has the same technical effects as the above-mentioned heating plate structure 10 .

[0043] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heating plate structure, characterized in that: The heating plate structure comprises: Base; A heating plate, connected to the base; and A heat-conducting member, which is disposed on the heating plate and has a heat-conducting surface facing away from the heating plate; The heating plate includes a central area and a peripheral area surrounding the central area, the heat conducting member includes a heat conducting bag, and the heat conducting bag includes a wrapping layer of a soft material and a heat conducting substance that can flowably fill the wrapping layer; The central area bulges relative to the peripheral area when heated to form a certain height difference. Driven by the height difference, the heat-conducting material flows freely in the wrapping layer until the heat-conducting surface does not deform.

2. The heating plate structure according to claim 1, characterized in that: The wrapping layer is made of high temperature resistant rubber material.

3. The heating plate structure according to any one of claims 1 to 2, characterized in that: The heat-conducting material is a heat-conducting fluid filled in the wrapping layer.

4. The heating plate structure according to claim 1, characterized in that: The heat-conducting material is heat-conducting oil filled in the wrapping layer.

5. The heating plate structure according to claim 1, characterized in that: The heat conducting member further comprises a protective layer with heat conducting properties, wherein the protective layer is attached to the surface of the heat conducting pack and defines an accommodation space for accommodating the heat conducting pack between the protective layer and the heat generating plate.

6. The heating plate structure according to claim 5, characterized in that: The heating plate has a heating surface for placing the heat-conducting pack, and the outer edge of the heating surface protrudes to form a limiting wall; The heat-conducting package is placed in the space surrounded by the limiting walls, the protective layer is attached to the surface of the heat-conducting package and defines the containing space together with the limiting walls and the heating surface.

7. The heating plate structure according to claim 5, characterized in that: The protective layer is a steel wire braided layer.

8. The heating plate structure according to claim 1, characterized in that: A fixing column is formed on one of the heating plate and the base, and a fixing hole matched with the fixing column is formed on the other.

9. The heating plate structure according to claim 8, characterized in that: The surface of the heating plate facing the base is protruded with fixing columns around the periphery, and the surface of the base facing the heating plate is formed with fixing holes matched with the fixing columns.

10. An electric cooker, characterized in that: The electric cooker comprises a functional plate and a heating plate structure as described in any one of claims 1 to 9, wherein the functional plate is placed on the heating surface of the heating plate structure, and the bottom of the functional plate is always in close contact with the heat-conducting surface.

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