Coil locating structure of electronic expansion valve

A technology of electronic expansion valve and positioning structure, which is applied in the direction of valve operation/release device, valve details, valve device, etc., and can solve problems such as product failure, aging of encapsulation layer, coil circumferential positioning and axial positioning failure, etc. , to achieve the effect of resisting high-frequency impact and ensuring normal operation

Active Publication Date: 2008-04-02
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, since the valve body and the coil (stator) are movable and assembled together, under low-frequency vibration (such as assembled in a stationary refrigeration system, such as a common household air conditioner), the valve body and the coil (stator) The active assembly structure can withstand the impact and maintain its assembly relationship to meet the requirements of use; but under high-frequency vibration (such as assembled in a moving refrigeration system, common such as automotive air conditioners), the valve body and coil (stator) activities The assembly structure is difficult to withstand the impact, and it is prone to failure in the circumferential and axial positioning of the coil
[0006

Method used

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  • Coil locating structure of electronic expansion valve
  • Coil locating structure of electronic expansion valve
  • Coil locating structure of electronic expansion valve

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example one

[0033] The coil positioning structure of the electronic expansion valve as shown in Fig. 2 includes a valve body 1 and a coil 2. The coil 2 has a winding portion 8 and a socket portion 16, and an axial through hole 5 is provided in the center of the winding portion 8. The hole 5 is sleeved on the valve body 1, and a positioning member is arranged between the coil 2 and the valve body 1. The details are:

[0034] The positioning member includes a bottom plate 10 and an outer cover 3;

[0035] The bottom plate 10 is fixed on the valve body 1 and supports the coil 2;

[0036] The outer cover 3 covers the outside of the coil 2 and has an axial positioning portion 26 corresponding to the bottom plate 10;

[0037] The outer cover 3 is fixedly connected to the bottom plate 10, and the axial positioning portion 26 presses the coil 2 on the bottom plate;

[0038] The bottom plate 10 or the outer cover 3 is provided with a circumferential positioning portion 28 that abu...

Example Embodiment

[0045] Example two

[0046] The coil positioning structure of the electronic expansion valve as shown in Fig. 4, on the basis of the structure of the first embodiment, the difference between it and the first embodiment will be explained, and the similarities will not be repeated:

[0047] The pressing portion 27 is an outer flange 6 provided at the lower end of the closure cap 4. The outer flange 6 is located on the lower side of the axial through hole 5 and is pressed against the upper end of the coil by the cover wall at the axial through hole 5, No filler is filled in the gap between the outer cover 3 and the coil 2.

Example Embodiment

[0048] Example three

[0049] The coil positioning structure of the electronic expansion valve as shown in Fig. 5, based on the structure of the first embodiment, illustrates the difference between it and the first embodiment, and the similarities will not be repeated:

[0050] The outer cover 3 includes a main portion 9 corresponding to the coil 2 and a closing cap 4 extending from the main portion and covered on the protruding section 29. The pressing portion 27 is the plane 20 on which the main portion 9 is pressed on the upper end of the coil 2. The gap between the coils 2 is not filled with filler.

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PUM

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Abstract

A coil position structure of electronic expansion valve comprises a valve body and a coil; a position member arranged between the coil and the valve body comprises a soleplate and an outer cover; the soleplate is fixed on the valve body and supports the coil; the outer cover covers outside the coil and is provided with an axial position part corresponding to the soleplate; the outer cover is fixedly connected with the soleplate; the coil is clamped on the soleplate by the axial position part; a circumferential position part clashed on a socket part is arranged on the soleplate or the outer cover. Through the axial position part and the circumferential position part, the invention achieves the position of the coil on the valve body to prevent the coil rotating in circumferential direction and moving in axial direct; as the outer cover is fixedly connected with the soleplate which is fixed on the valve body; two position parts are fixed structures in an assembling state, thereby effectively resisting high-frequent impact and maintaining the assembling relation between the coil and the valve body and further providing a protective barrier to ensure a normal operation.

Description

technical field [0001] The invention relates to components used in a refrigeration system, in particular to a coil positioning structure of an electronic expansion valve for regulating refrigerant flow. Background technique [0002] In the refrigeration system, the electronic expansion valve is an indispensable component used to adjust the flow of refrigerant in the system. There are also various patent documents that have been published about its structure. Generally speaking, it is composed of a valve body and a coil. , through the power provided by the coil, the action of the relevant parts in the valve body can be controlled to open or close the valve port and adjust the opening of the valve port, thereby realizing the control of the refrigerant. Most of the valve body and the coil of the existing electronic expansion valve are movably assembled together, that is, the coil is assembled on the valve body through a movable positioning device. [0003] The electronic expan...

Claims

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Application Information

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IPC IPC(8): F16K31/06
Inventor 张胜昌詹才意魏先让
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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