End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve

A four-way reversing valve and matching technology, applied in the direction of valve details, multi-way valves, safety valves, etc., can solve the problems of welding gaps affecting welding quality, etc., and achieve the effect of avoiding low welding quality

Inactive Publication Date: 2011-02-02
ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, if the welding gap between the two is too large, it will directly affect the welding quality.

Method used

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  • End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve
  • End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve
  • End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve

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Embodiment Construction

[0029] The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0030] The orientation words involved in this article, such as up, down, left, right, outside and inside, are defined based on the pictorial position of the four-way reversing valve in the attached drawing. It should be understood that the orientation words used in this article should not be limited. protection scope of this patent.

[0031] see image 3 . This figure is a schematic diagram of the overall structure of the four-way reversing valve described in this embodiment.

[0032] Such as image 3 As shown, the four-way reversing valve in this embodiment is mainly composed of a main valve 10 , a pilot valve 20 and an electromagnetic coil 30 .

[0033] The main valve 10 of the four-way reversing valve is mainly composed of a valve body 2, an end cover 1 sealed and connected to both sides of the valve body, a valve seat 5 fixedly arranged in the inner cavity of...

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PUM

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Abstract

The invention discloses an end cover which is used for being matched with a valve body of a main valve of a four-way reversing valve; the end cover is provided with a large diameter section and a small diameter section which are sequentially arranged along the axial direction, wherein the periphery of the end cover at the large diameter section is used for being fixedly connected with the valve body in a sealing way, and the end part of the end cover at the small diameter section is used for being matched with a piston of the main valve for limiting the work position of the piston; and the end part of the end cover at the large diameter section is provided with a stop hole extending along the radial direction, and the stop hole is used for leaning against and being matched with the end surface of the valve body. Compared with the prior art, the part where the end cover is welded with the valve body is moved to the end surface of the valve body at the outer side, so that the radial clearance between the end cover and the valve body is larger, and the welding technique is not influenced. Therefore, the invention can effectively avoid the problem of poorer welding quality caused by more change of the inner diameter of the valve body. The invention also disclosed the valve body matched with the end cover, main valve of the four-way reversing valve provided with the end cover and the valve body, and the four-way reversing valve.

Description

technical field [0001] The invention relates to a four-way reversing valve used in a refrigerant circulation system, in particular to a matching end cover, a valve body, and a four-way reversing valve main valve and a four-way reversing valve with the end cover and valve body . Background technique [0002] Existing four-way reversing valve is mainly made up of electromagnetic coil, pilot valve and main valve. During the control process, the direction of the main valve is realized through the joint action of the electromagnetic coil and the pilot valve to switch the flow direction of the refrigerant, so that the heat pump air conditioner can be switched between the two working states of cooling and heating. The purpose of cooling and heating in winter. [0003] The main valve of the existing four-way reversing valve has three ports: the S port connected with the suction port of the compressor, the E port connected with the indoor heat exchanger and the C port connected wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/12F16K17/24F16K11/065
Inventor 张国栋黄松炎
Owner ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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