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Electronic expansion valve

An electronic expansion valve and valve port technology, which is used in lift valves, valve devices, lighting and heating equipment, etc., can solve the problems of insufficient axial positioning of the guide sleeve, deflection of the guide sleeve, affecting the structural accuracy of the electronic expansion valve, etc. Improve the neutrality, ensure the structural accuracy, and enhance the effect of the axial matching length

Active Publication Date: 2020-04-07
ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an electronic expansion valve to solve the problem that the axial positioning of the valve seat to the guide sleeve is insufficient in the prior art, and the deflection of the guide sleeve is prone to occur, which affects the structural accuracy of the electronic expansion valve.

Method used

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Embodiment Construction

[0014] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0015] Please refer to Figures 1 to 4 , according to an embodiment of the present invention, the electronic expansion valve includes a valve seat 1, a valve port seat 2, a nut assembly 3 and a valve needle 4, the valve port seat 2 is fixedly arranged on the valve seat 1, and the valve seat 1 and the nut assembly 3 are provided with A guide sleeve 5, a valve core part is connected to the nut assembly, a magnetic rotor is connected to the valve core part, the valve core part includes a screw rod and a valve needle 4, the nut assembly guides the valve needle 4 through the guide sleeve, and the valve needle 4 guides the valve needle 4 along the guide sleeve. 5 is reciprocatingly arranged in the guide sleeve 5 in the axial direction, the valve port seat 2 is concentrically socketed with the guide sleeve 5, and the end ...

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Abstract

The invention provides an electronic expansion valve. The electronic expansion valve includes a valve seat, a valve port seat, a nut assembly and a valve needle. The valve port seat is fixedly arranged on the valve seat, and a guide sleeve is arranged between the valve seat and the nut assembly. Set in the guide sleeve, the valve port seat and the guide sleeve are concentrically socketed, and the end of the valve port seat close to the guide sleeve is radially provided with a first flow channel that connects the valve cavity of the valve seat with the valve port of the valve port seat, and the valve port seat and the guide sleeve The matching length is greater than the height from the bottom of the first flow channel of the valve port seat to the bottom axial stop surface outside the valve port seat corresponding to the guide sleeve. According to the electronic expansion valve of the present invention, it can solve the problems in the prior art that the axial positioning of the valve seat to the guide sleeve is insufficient, the deflection of the guide sleeve is prone to occur, and the structural accuracy of the electronic expansion valve is affected.

Description

technical field [0001] The invention relates to an electronic expansion valve, in particular to an electronic expansion valve used in refrigeration systems such as air conditioners and refrigerators. Background technique [0002] The electronic expansion valve is an important part in the refrigeration system, which mainly plays the role of throttling and reducing pressure and regulating flow. The existing electronic expansion valve includes a valve body, a nut, and a valve needle assembly threadedly engaged with the nut. A driving device is used to drive the valve needle assembly to rotate while generating axial movement to adjust the opening of the valve port to achieve flow control. [0003] The invention patent with the publication number CN102454818A and the name "An Electric Valve" discloses an electronic expansion valve with the following structure: valve seat, valve core seat, valve needle screw assembly, nut, wherein the valve needle screw assembly is installed on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F25B41/06F25B41/34
CPCF16K1/00F25B41/31Y02B30/70
Inventor 王定军朱方英
Owner ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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