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Electronic expansion valve

An electronic expansion valve, valve stem technology, applied in the direction of lift valve, valve device, valve details, etc., can solve the problems affecting the valve opening ability of the electronic expansion valve, and achieve the effect of improving the valve opening ability and ensuring the sealing performance.

Active Publication Date: 2017-02-22
ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO LTD SHAOXING CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pressure-bearing area of ​​the upper end of the valve stem is greater than the pressure-bearing area of ​​the lower end of the valve stem. After synthesis, the valve stem is subjected to an axial downward force, which affects the valve opening capability of the electronic expansion valve.

Method used

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  • Electronic expansion valve
  • Electronic expansion valve
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Embodiment Construction

[0041] The core of the present invention is to provide an electronic expansion valve, which can take into account both the sealing of the valve port and the ability to open the valve.

[0042] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The upper and lower orientation words involved in this article are based on Figure 1-12 The components are located in the drawings and the positions of the components are defined only for the clarity and convenience of expressing the technical solution. It should be understood that the orientation words used herein shall not limit the scope of protection claimed in this application.

[0044] Please refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of a specific embodiment of the electronic expansion valve pro...

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PUM

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Abstract

The invention discloses an electronic expansion valve which comprises a valve seat component and a valve rod component, wherein the valve seat component comprises a valve seat and a valve core seat inserted into the valve seat; the valve rod component can move in an axial direction of a core cavity of the valve core seat to open or close a valve port so as to open or close two interfaces of the electronic expansion valve; the valve rod component is provided with an axial through hole communicated with the valve port and a sealing surface fitting with and sealing the valve port; the valve rod component comprises a valve rod and a valve core fixedly arranged at the lower end of the valve rod; the valve rod is a cylindrical body and comprises a minor-diameter cylinder body and a major-diameter cylinder body close to the valve port; a first gap is arranged between the major-diameter cylinder body and the valve core seat; and a second gap is arranged between the valve core and the valve port. The electronic expansion valve can give consideration to valve port sealability and valve opening capability at the same time.

Description

technical field [0001] The invention relates to the technical field of fluid control components, in particular to an electronic expansion valve. Background technique [0002] As an important part of the refrigeration system, the electronic expansion valve is widely used in large-scale refrigeration units, large-scale cold storage, supermarket freezers, etc. The working process of the electronic expansion valve is generally: as the motor is powered on or off, the opening of the valve stem is adjusted to adjust the flow of refrigerant. [0003] A common electronic expansion valve includes a valve seat and a valve stem. Usually, the valve seat is provided with a valve port and two interfaces, and the two interfaces can be communicated through the valve port. The valve stem has a sealing surface that can fit and seal with the end surface of the valve port. . The valve stem is located in the valve chamber of the valve seat, and can be driven by the motor to move axially along t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/26F16K3/314F16K31/53F16K31/50
CPCF16K3/262F16K3/314F16K31/508F16K31/53F25B41/35F16K1/36F25B2341/06Y02B30/70F04B49/22
Inventor 不公告发明人
Owner ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO LTD SHAOXING CITY