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Heat conduction structural member, heat conduction shell and heater

A technology of heat conduction structure and structural parts, which is applied in the direction of ohmic resistance heating parts, etc., can solve the problems of low heat conduction performance and high cost, and achieve the effects of improving heat conduction performance, facilitating heat conduction, and reducing costs

Pending Publication Date: 2022-07-08
浙江微燃电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing PTC heaters have the problems of low thermal conductivity and high cost of the heat-conducting structural parts where the PTC thermistor element dissipates heat to the heat-transfer medium

Method used

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  • Heat conduction structural member, heat conduction shell and heater
  • Heat conduction structural member, heat conduction shell and heater
  • Heat conduction structural member, heat conduction shell and heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] like Figure 5 and Image 6 As shown, this embodiment provides a PTC heater, which includes a heating box body 1 and a PTC thermistor element 2 . The heating box body 1 includes a polymer material shell 16 and a heat-conducting shell body. The heat-conducting shell body is disposed in the polymer material shell 16 , so that the heating box 1 forms a first heat dissipation cavity 11 , a heat generation cavity 12 and a second heat dissipation cavity 13 from top to bottom. The heat-generating cavity 12 is surrounded by a first heat-conducting casing 14 and a second heat-conducting casing 15, and is a sealed cavity. The first heat-conducting shell 14 and the second heat-conducting shell 15 are collectively called a heat-conducting shell body, and the heat-generating cavity 12 is a cavity enclosed by the aforementioned heat-conducting shell body. The heat-generating cavity 12 and the first heat-dissipating cavity 11 are separated by a first heat-conducting casing 14 . Th...

Embodiment 2

[0123] The main difference between this embodiment and Embodiment 1 is:

[0124] A thermally conductive phase change material is filled between the PTC thermistor element 2 and the shell of the heat-generating cavity 12 to replace the liquid-phase thermally conductive material 4. The thermally conductive phase-change material is solid when filled into the heat-generating cavity 12, and is When the PTC thermistor element 2 is heated to a predetermined temperature during operation, the thermally conductive phase change material changes into a liquid state and fills the heat generating cavity 12 .

[0125]In this way, the thermally conductive phase change material is used as the filling material, and when the PTC thermistor element 2 is heated to a predetermined temperature, the thermally conductive phase change material is converted into a liquid state, which can fully conduct heat, and at the same time, there is no need to connect the PTC thermistor element 2 to the thermal cond...

Embodiment 3

[0129] like Figure 7 to Figure 9 As shown, the main difference between this embodiment and Embodiment 1 is:

[0130] The surfaces of the positive electrode sheet 21 and the negative electrode sheet 22 are not provided with the first insulating and thermally conductive coating 31 . The inner wall of the heat-generating cavity 12 , that is, the inner wall of the first thermally conductive casing 14 and the inner wall of the second thermally conductive casing 15 are both coated with a second insulating and thermally conductive coating 32 . The second insulating and thermally conductive coating 32 is an alumina coating, which is sprayed on the inner walls of the first thermally conductive casing 14 and the second thermally conductive casing 15 by thermal spraying. The thickness of the second insulating and thermally conductive coating 32 is 0.08 mm, and the insulation resistance of the second insulating and thermally conductive coating 32 is 2 Mohm. A liquid-phase thermally con...

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Abstract

The invention relates to a heat conduction structural member, a heat conduction shell and a heater. The heat conduction structural member comprises a structural member body and a heat conduction coating. The structural member body is provided with a surface; the heat conduction coating is arranged on the whole or part of the surface of the structural part body. According to the heat-conducting structural member, the heat-conducting shell and the heater, the heat-conducting coating is arranged on the surface of the heat-conducting structural member, the surface of the heat-conducting shell body and the surface of the positive plate or the negative plate, so that the heat-conducting property and the heat-conducting efficiency can be remarkably improved. Due to the arrangement of the heat-conducting coating, a heat-conducting film can be omitted, so that the cost can be obviously reduced, and compared with a scheme using the heat-conducting film, the cost can be reduced to be less than one fifth of the original cost by adopting the heat-conducting coating according to calculation.

Description

technical field [0001] The present invention relates to a heat-conducting structural member, a heat-conducting casing and a heater. Background technique [0002] The electric heater usually generates heat by energizing the heat generating element, and then the heat is transferred to the required position by the heat-conducting structure and the heat-conducting fluid. Since the heat-generating element is an electrical device, a heat-conducting film usually needs to be arranged between the heat-conducting structural member and the heat-generating element to transfer heat. The thermal conductive film is usually composed of an insulating film and a thermal conductive film. Although the thermal conductivity can meet certain requirements, it needs to be improved. For example, a commonly used electric heater, such as a PTC heater, is a device that generates heat from the internal PTC thermistor element and dissipates heat to the heat transfer medium, which can be used for the heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/02
CPCH05B3/02Y02E60/10
Inventor 王怀东
Owner 浙江微燃电气科技有限公司
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