Electrically operated valve

A technology of electric valve and valve seat, which is applied in the direction of valve lift, valve device, valve details, etc. It can solve the problems of complex configuration and structure of rectification components, reduction of refrigerant flow loss, etc., and achieves reduction of abnormal sound and simple configuration structure , the effect of suppressing flow loss
CN104948828AActive Publication Date: 2015-09-30FUJIKOKI MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIKOKI MFG CO LTD
Publication Date
2015-09-30

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Abstract

The invention provides an electrically operated valve which can reduce an abnormal noise generated in the case that a fluid is flows in a first flowing direction and a second flowing direction, while suppressing a flow rate loss of a fluid with a simple structure. An electrically operated valve is provided with a valve main body (5) in which a valve chamber (7) is defined in an inner portion and a first opening (11a) and a second opening (12a) are formed in a side portion and a bottom portion, a valve seat member (8) which has an valve port (9) open to the valve chamber (7) and a valve seat (8a) and is provided in the second opening (12a) of the valve main body (5), a valve body (20) which is arranged in the valve chamber (7) so as to be movable up and down, and an elevation drive portion (50) which moves up and down the valve body (20) in relation to the valve seat (8a), and a porous body (4) constructed by a foam metal is arranged along a portion which is positioned in a side portion of the valve port on the inner wall surface of the valve main body (5).
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Description

technical field

[0001] The invention relates to an electric valve, in particular to an electric valve used in heat pump cooling and heating systems. Background technique

[0002] For a long time, we have continuously developed electric valves for the purpose of miniaturization, increase in capacity and energy saving. As an example of such a conventional electric valve, Patent Document 1 discloses a technique of reducing the force acting in the valve closing direction as much as possible so that a valve opening spring with a smaller spring load can be used.

[0003] The electric valve disclosed in Patent Document 1 has: a valve main body having a valve chamber, a first lateral port opening to the valve chamber, a longitudinal valve port with a valve seat opening to the valve chamber, And the second inlet and outlet connected with the valve port; the valve core, the valve core is configured to be liftable in the valve chamber to open and close the valve port; the lifting driv...

Claims

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