JPH0430393U

JPH0430393U -

Info

Publication number: JPH0430393U
Application number: JP7175490U
Authority: JP
Priority date: 1990-07-05
Filing date: 1990-07-05
Publication date: 1992-03-11

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係るバキユームブ
レーカを用いた給湯装置のブロツク図、第２図は
本実施例の給湯停止時の断面図、第３図はその給
湯時の断面図であり、第４図は従来の給湯装置の
ブロツク図、第５図は従来のバキユームブレーカ
の断面図である。１……上水道管、２……給湯管路、４……電磁
開閉弁、７……第２の逆止弁、８……浴槽、１１
……バキユームブレーカ、１２……ボデイ、１３
……流通路、１６……空気流入孔、１７……弁口
、２０……上部弁室、２１……液体出入孔、２３
……上部弁体、３０……排水機構、３３……下部
弁室、３５……排水孔、３６……弁口、３８……
ダイヤフラム、３９……下部弁体、４４……圧縮
コイルばね、４６……排水路。 Fig. 1 is a block diagram of a water heater using a vacuum breaker according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of this embodiment when hot water supply is stopped, and Fig. 3 is a cross-sectional view of the water heater when hot water supply is stopped. 4 is a block diagram of a conventional water heater, and FIG. 5 is a sectional view of a conventional vacuum breaker. DESCRIPTION OF SYMBOLS 1... Water supply pipe, 2... Hot water supply pipe, 4... Solenoid on-off valve, 7... Second check valve, 8... Bathtub, 11
...Vacuum breaker, 12...Body, 13
...Flow path, 16...Air inlet hole, 17...Valve port, 20...Upper valve chamber, 21...Liquid inlet/outlet hole, 23
... Upper valve body, 30 ... Drainage mechanism, 33 ... Lower valve chamber, 35 ... Drain hole, 36 ... Valve port, 38 ...
Diaphragm, 39...lower valve body, 44...compression coil spring, 46...drainage channel.

Claims

[Scope of utility model registration request]

A vacuum breaker is used by being interposed between an electromagnetic on-off valve and a check valve in the middle of the water supply pipe of a water supply system in which a water supply and a water tank are directly connected by a water supply pipe, and the vacuum breaker is used by interposing the water supply in the body. An upper part having a horizontal flow passage connected to the pipe line, and an air inflow hole opening to the upper surface of the body and a liquid inlet/outlet hole opening to the flow passage on the upper surface side of the flow passage. An upper valve body forming a valve chamber and housed in the upper valve chamber,
The air inflow hole is moved upward by the water pressure of the flow path to close it, and the air inflow hole is opened and communicated with the flow path by being moved downward by its own weight as the water pressure decreases. A lower valve chamber having a drainage hole opening on the lower surface of the body is opened on the lower surface side of the passageway, and a lower valve body for opening and closing the drainage hole is fitted to a diaphragm stretched over the opening edge of the lower valve chamber. A drainage channel communicating with the lower surface side of the diaphragm is formed on the side of the opening of the lower valve chamber of the flow passage, and the lower valve body is biased upward by a biasing spring to drain the water. A drainage mechanism for use in a water supply device, characterized in that a drainage mechanism is provided that opens a hole and closes the drainage hole by moving the lower valve body downward against the urging force using the water pressure of the flow path. Vacuum breaker.