JPS6077869U

JPS6077869U - switching valve

Info

Publication number: JPS6077869U
Application number: JP17027083U
Authority: JP
Inventors: 信行広井
Original assignee: 東芝熱器具株式会社
Priority date: 1983-11-02
Filing date: 1983-11-02
Publication date: 1985-05-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の切換弁を示す断面図、第２図はこの考案
の一実施例による切換弁を示す断面図である。２・・・・・・第１の弁室、３・・・・・・第２の弁室
、４・・・・・・連通路、７・・・・・・第１の弁口、
１２・・・・・・制御弁、１６・・・・・・流入管、１
８・・・・・・第２の弁口、１９・・・・・・第１の流
出管、２０・・・・・・第２の流出管、２５・・・・・
・差圧弁、２７・・・・・・スプリング、３０・・・・
・・第３の弁口、３１・・・・・・チェック弁。第１図第２図FIG. 1 is a sectional view showing a conventional switching valve, and FIG. 2 is a sectional view showing a switching valve according to an embodiment of the invention. 2...First valve chamber, 3...Second valve chamber, 4...Communication passage, 7...First valve opening,
12...Control valve, 16...Inflow pipe, 1
8... Second valve port, 19... First outflow pipe, 20... Second outflow pipe, 25...
・Differential pressure valve, 27...Spring, 30...
...Third valve port, 31...Check valve. Figure 1 Figure 2

Claims

[Scope of utility model registration request]

The first and second valve chambers, a communication passage that communicates the two valve chambers with each other and has a connecting portion with the first valve chamber as a first valve port, and a communication passage that branches into the two valve chambers and communicates with each other. an inflow pipe that communicates with the communication passage, a first outflow pipe that communicates with the communication passage, a second outflow pipe that communicates with the second valve chamber through a second valve port, and the communication passage and the second valve chamber. and a control valve provided in the first valve chamber that opens and closes the first valve port to cut off fluid flow from the inflow pipe to the first outflow pipe. , which is provided in the second valve chamber and closes the second valve port by the biasing force of a spring, and operates against the spring based on the pressure drop in the communication passage when the first valve port is closed. a differential pressure valve that normally closes the third valve port, and a third valve that normally closes the third valve port in conjunction with the operation of the control valve when the first valve port is closed;
A switching valve comprising a check valve that opens the valve port of the valve.