Heating body structure

Abstract

The utility model discloses a heating body structure which sequentially comprises an upper shell, an upper insulating layer, a heating source, a lower insulating layer and a base plate assembly from top to bottom, the heating source comprises a plurality of heating rings with gradually increased radiuses, the adjacent heating rings are communicated through bending parts, one end of the innermost heating ring is bent downwards to form a first bending end, and the other end of the innermost heating ring is bent downwards to form a second bending end. One end of the heating ring located on the outermost side is bent and folded downwards to form a second bent end, and the multiple heating rings are located on the same horizontal plane. The heating source is provided with the heating rings with the radiuses gradually increased, the heating rings are communicated and conducted, the heating source of the structure can enable the upper shell to be evenly heated while heating is conducted, a supporting body does not need to be additionally arranged for installation, the assembling process is simplified, and meanwhile the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of heating elements, in particular to a heating element structure. Background Art

[0002] The heating plate is the main heating element of the rice cooker. It is a metal disc with a heating wire embedded in it. The inner pot is placed on it and can be seen by removing the inner pot.

[0003] The heating wire in the prior art must be matched with a support body to be stably installed in the electric heating plate. The heating wire needs to be wound and assembled on the support body. If the heating wire is too thick, winding will be difficult, which increases the difficulty of installation. In addition, the temperature of the wiring terminal of the heating wire will be too low, resulting in uneven heat on the surface of the electric heating plate. Utility Model Content

[0004] The purpose of the utility model is to provide a heating element structure to solve the above problems.

[0005] According to one aspect of the utility model, a heating element structure is provided, which comprises, from top to bottom, an upper shell, an upper insulating layer, a heat source, a lower insulating layer and a chassis assembly, wherein the heat source comprises a plurality of heating coils with gradually increasing radii, adjacent heating coils are connected via a bending portion, one end of the heating coil at the innermost side is bent and folded downward to form a first bending end, and one end of the heating coil at the outermost side is bent and folded downward to form a second bending end.

[0006] In some embodiments, the heat source is integrally formed with a plurality of the heating rings with gradually increasing radii and a plurality of the bending portions.

[0007] In some embodiments, the heat source is made of an electric heating alloy material.

[0008] In some embodiments, the upper shell is made of metal material, and a side panel is extended downward from the edge of the upper shell. The bottom of the side panel is bent inward to form a receiving groove for placing the chassis assembly. An upper insulating layer, a heat source and a lower insulating layer are sandwiched between the upper shell and the chassis assembly from top to bottom.

[0009] In some embodiments, a top surface of the upper shell is provided with heat-conducting lines.

[0010] In some embodiments, the upper insulating layer and the lower insulating layer are both mica boards.

[0011] In some embodiments, the upper shell is made of aluminum alloy.

[0012] In some embodiments, the lower insulating layer is provided with two avoidance holes for the first bent end and the second bent end to pass through.

[0013] In some embodiments, the chassis assembly is provided with two power sockets for the first bent end and the second bent end to be plugged into, and the power sockets are provided with insulators.

[0014] In some embodiments, the upper shell, the upper insulating layer, the lower insulating layer and the chassis assembly are in a circular structure, and a through hole for the sensor to pass through is opened in the middle of the upper shell, the upper insulating layer, the lower insulating layer and the chassis assembly.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The heat source of the present application is in the form of multiple heating rings with gradually increasing radii, and the heating rings are interconnected and conductive. The heat source of this structure can heat the upper shell evenly while generating heat and does not require additional support bodies for installation, thereby simplifying the assembly process and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after the upper shell and the upper insulating layer are hidden;

[0019] Figure 3 It is a schematic diagram of the connection structure between the heat source and the chassis component of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the heat source of the utility model;

[0021] Figure 5 It is a schematic diagram of the bottom three-dimensional structure of the upper shell of the utility model;

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] refer to Figures 1 to 6The present application provides a heating element structure, which includes, from top to bottom, an upper shell 1, an upper insulating layer 2, a heat source 3, a lower insulating layer 4 and a chassis assembly 5. The heat source 3 includes a plurality of heating coils 6 with gradually increasing radii. Adjacent heating coils 6 are connected by a bending portion 7. One end of the innermost heating coil 6 is bent and folded downward to form a first bending end 8, and one end of the outermost heating coil 6 is bent and folded downward to form a second bending end 9.

[0025] The heat source 3 is integrally formed with a plurality of heating rings 6 with gradually increasing radii and a plurality of bending portions 7; the heat source 3 is an electric heating alloy plate that is punched into different shapes, and different powers are achieved according to different cross sections and lengths.

[0026] In some embodiments, the upper shell 1 is made of metal material, and a side panel 10 is extended downward from the edge of the upper shell 1. The bottom of the side panel 10 is bent inward to form a receiving groove 11 for placing the chassis assembly 5. An upper insulating layer 2, a heat source 3 and a lower insulating layer 4 are sandwiched between the upper shell 1 and the chassis assembly 5 from top to bottom.

[0027] In some embodiments, a heat-conducting pattern 12 is disposed on the top surface of the upper shell 1, so that the upper shell 1 can more fully conduct heat to the inner pot of the rice cooker.

[0028] In some embodiments, the upper insulating layer 2 and the lower insulating layer 4 are both mica boards, which have good insulation properties. Materials with the above characteristics can also be used as the upper insulating layer 2 and the lower insulating layer 4 in this embodiment.

[0029] In some embodiments, the upper shell 1 is made of aluminum alloy, which has good thermal conductivity and is corrosion-resistant and wear-resistant.

[0030] In some embodiments, the lower insulating layer 4 is provided with two avoidance holes 13 for the first bent end 8 and the second bent end 9 to pass through.

[0031] In some embodiments, the chassis assembly 5 is provided with two power sockets for the first bending end 8 and the second bending end 9 to be plugged into, and an insulator 14 is sleeved on the power sockets.

[0032] In some embodiments, the upper shell 1, the upper insulating layer 2, the lower insulating layer 4 and the chassis assembly 5 are in a circular structure, and through holes for the sensors to pass through are opened in the middle of the upper shell 1, the upper insulating layer 2, the lower insulating layer 4 and the chassis assembly 5.

[0033] Inserts are welded to the first bent end 8 and the second bent end 9 . The first bent end 8 and the insert are welded to form a first terminal 15 , and the second bent end 9 and the insert are welded to form a second terminal 16 .

[0034] The heating principle of the present application: after the first bending end 8 and the second bending end 9 are connected to the power supply, each heating coil 6 in the heat source 3 starts to generate heat evenly and can transfer the heat evenly to the upper insulating layer 2, and the upper insulating layer 2 then transfers the heat to the upper shell 1, and the upper shell 1 transfers the heat through the heat-conducting lines 12 to heat and cook the food.

[0035] The heat source 3 of the present application is in the form of multiple heating rings 6 with gradually increasing radii, and the heating rings 6 are interconnected and conductive. The heat source 3 of this structure can heat the upper shell 1 evenly while generating heat and does not require an additional support body for installation, thereby simplifying the assembly process and saving production costs.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heating element structure, characterized in that: From top to bottom, it includes: an upper shell, an upper insulating layer, a heat source, a lower insulating layer and a chassis assembly. The heat source includes a plurality of heating coils with gradually increasing radii. Adjacent heating coils are connected via a bending portion. One end of the innermost heating coil is bent and folded downward to form a first bending end, and one end of the outermost heating coil is bent and folded downward to form a second bending end.

2. The heating element structure according to claim 1, characterized in that: The heat source is integrally formed with a plurality of heating rings with gradually increasing radii and a plurality of bending portions.

3. The heating element structure according to claim 2, characterized in that: The material of the heat source is an electric heating alloy material.

4. The heating element structure according to claim 1, characterized in that: The upper shell is made of metal material, and a side panel is extended downward from the edge of the upper shell. The bottom of the side panel is bent inward to form a receiving groove for placing the chassis assembly. An upper insulating layer, a heat source and a lower insulating layer are sandwiched between the upper shell and the chassis assembly from top to bottom.

5. The heating element structure according to claim 4, characterized in that: The top surface of the upper shell is provided with heat-conducting lines.

6. The heating element structure according to claim 1, characterized in that: The upper insulating layer and the lower insulating layer are both mica boards.

7. The heating element structure according to claim 4, characterized in that: The upper shell is made of aluminum alloy.

8. The heating element structure according to claim 1, characterized in that: The lower insulating layer is provided with two avoidance holes for the first bent end and the second bent end to pass through.

9. The heating element structure according to claim 1, characterized in that: The chassis component is provided with two power sockets for the first bending end and the second bending end to be plugged into, and the power sockets are sleeved with insulators.

10. The heating element structure according to claim 1, characterized in that: The upper shell, the upper insulating layer, the lower insulating layer and the chassis component are in a circular structure, and the middle parts of the upper shell, the upper insulating layer, the lower insulating layer and the chassis component are all provided with through holes for the sensor to pass through.

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