POWER ELEMENT AND EXPANSION VALVE USING SAME

Title:

POWER ELEMENT AND EXPANSION VALVE USING SAME

Document Type and Number:

WIPO Patent Application WO/2021/106933

Kind Code:

A1

Abstract:

Provided are: a power element that can suppress local deformation of a diaphragm while ensuring the conveyance efficiency of a refrigerant; and an expansion valve using the power element. The power element (8) is characterized by having: a diaphragm (83); an upper lid member (82) that overlaps one surface in the vicinity of the outer circumference of the diaphragm (83) and forms a pressure operating chamber (PO) between the upper lid member (82) and the diaphragm (83); a reception member (86) overlaps on the other surface in the vicinity of the outer circumference of the diaphragm (83) and forms a refrigerant inflow chamber (LS) between the reception member (86) and the diaphragm (83); and a stopper member (84) that is accommodated in the refrigerant inflow chamber (LS) and abuts the diaphragm (83), wherein the diaphragm (83) is displaced from a neutral position within a range of positions displaced from the neutral position to the upper lid member (82) side.

Inventors:

AOKI YUTARO (JP)
HAYAKAWA JUNYA (JP)
TAKAHASHI YUSUKE (JP)

Application Number:

PCT/JP2020/043823

Publication Date:

June 03, 2021

Filing Date:

November 25, 2020

Export Citation:

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Assignee:

FUJIKOKI CORP (JP)

International Classes:

F16K31/68; F25B41/335

Foreign References:

JPH0979703A	1997-03-28
JPH109720A	1998-01-16
JPS6191470A	1986-05-09
JP2006266568A	2006-10-05
JP2019163896A	2019-09-26

Other References: