Title:
Squeezing device and refrigeration cycle system
Document Type and Number:
Japanese Patent JP6325992
Kind Code:
B2
Abstract:
A throttling device which can suppress noise and a refrigeration cycle system are provided. This throttling device (10) is provided with: a valve seat member (2) which comprises a valve port (21); a needle valve (4) which makes it possible to change the opening degree of the valve port (21); and a cylindrical guide member (3) which guides forward and backward movement of the needle valve (4). On the needle valve (4) and the guide member (3), sliding surfaces (34, 46) are formed which face one another across a predetermined gap and which can slide against one another. The gap functions as an intermediate flow path (45) allowing a fluid to pass from the valve port (21) towards the secondary side, and on the sliding surface (46) of the needle valve (4), a concave groove (47) is formed which is a flow path expanded portion that is recessed in the direction away from the sliding surface (34) of the guide member (3) and that expands the width dimension of the intermediate flow path (45).
Inventors:
Hiromasa Takada
Yuichiro Toyama
Yuki Shinpei
Junichi Yokota
Yuichiro Toyama
Yuki Shinpei
Junichi Yokota
Application Number:
JP2015020204A
Publication Date:
May 16, 2018
Filing Date:
February 04, 2015
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
F16K17/34; F16K1/32; F16K47/02; F16K47/04; F25B1/00; F25B41/06
Domestic Patent References:
| JP2004218918A | ||||
| JP59090671U | ||||
| JP63049066U |
Attorney, Agent or Firm:
Fumio Takino
Hideo Takino
Takao Kawasaki
Toshiaki Tsuda
Masashi Torino
Hideo Takino
Takao Kawasaki
Toshiaki Tsuda
Masashi Torino