Flow control valve

Active Publication Date: 2014-04-17
ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0031]In addition, since the lower end portion of the valve rod is a cylinder, but not a cone, pressures exerted by the refrigerant on the lower end of the valve rod are uniform. Meanwhile, since the valve rod has a tubular shape and is run through along the axial direction, the pressure exerted by the refrigerant on the upper end of the valve rod is equal to that exerted on the lower end thereof. Under the precondition that the force

Problems solved by technology

However, the flow adjusting valve has disadvantages as follows.
Since the impact force is large, after performing the opening and closing operations time and again, the sealing member 2′3 is easy to be deformed, resulting in the l

Method used

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Embodiment Construction

[0057]A spirit of the present application is to provide a flow adjusting valve, with the structural design of the flow adjusting valve, pressures exerted by the refrigerant on the valve rod in the axial direction can be balanced while ensuring that the required flow curve can be obtained.

[0058]In order that those skilled in the art can better understand technical solutions of the present application, the present application is described in detail hereinafter in conjunction with the accompanying drawings and the embodiments.

[0059]Referring to FIG. 4, FIG. 4 is a structural schematic view of a flow adjusting valve according to an embodiment of the present application.

[0060]The electronic expansion valve according to the present application is configured for adjusting the flow of the refrigerant. As shown in FIG. 4, the electronic expansion valve includes a motor shell 52 in which a motor 5 is provided. The output shaft 51 of the motor 5 is in transmission connection with the screw rod 61

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Abstract

A flow control valve comprises a valve seat (1) having a valve port (121) in its valve chamber and a valve rod (2) opening or closing the valve port (121). A sleeve protrusion part (122) projects upward from the valve port (121) in an axial direction thereof. The valve rod (2) is tubular and is cylindrical at the lower end. An open slot (3) matching with a flow curve is provided in the circumferential side wall of one of the sleeve protrusion part (122) and the lower end of the valve rod (2). One of the sleeve protrusion part (122) and the lower end of valve rod (2) is inserted into or extracted from the other to disconnect or connect the open slot (3) with the valve port (121). The structural design of the flow control valve can balance the refrigerant pressure on the valve rod (2) in the axial direction while ensuring that the required flow curve can be obtained.

Description

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Claims

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Application Information

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Owner ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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