Fluid valve device

Abstract

An fluid valve device with a pilot solenoid valve comprises a passage body 10 for determining an inflow passage 11 and an outflow passage 13, a diaphragm valve 20 interposed between the inflow passage 11 and the outflow passage 13 for opening / closing the passage, a communication passage 16 for communicating a front pressure chamber RH and a back pressure chamber RL of the diaphragm valve 20, a pilot passage 14 for communicating the back pressure chamber RL and the outflow passage 13, the pilot solenoid valve 40 for opening / closing the pilot passage 14 and a flat plate type cover 30 connected with the passage body 10 in order to determine the back pressure chamber RL. The pilot solenoid valve 40 is connected with the passage body 10 in a region out of the cover 30 and a groove passage 33 is formed on the cover 30 for determining a part of the pilot passage. Thereby, the device is restricted from protruding above the back pressure chamber RL and the device can be miniaturized and thin- walled.

Description

technical field [0001] The present invention relates to a fluid valve for controlling fluid flow, in particular an electromagnetically driven hydraulic control solenoid valve and a diaphragm valve for opening and closing a fluid channel. Background technique [0002] Traditional fluid valves for water supply and drainage of water heaters and washing machines include JP-A-6-117570, Utility Model Registration No. 2519305, and the like. The fluid valve disclosed in these patents has a channel housing that divides the inflow channel and the outflow channel of water, a diaphragm valve that opens and closes the channel between the two channels, and an electromagnetic drive that controls the pressure in the back pressure chamber of the diaphragm valve to open and close the diaphragm valve. Hydraulic control solenoid valve, etc. These fluid valves can be installed, for example, in indoor underfloor or sidewall spaces, and where space is limited for equipment such as washing machine...

AI Technical Summary

Problems solved by technology

[0005] In addition, in the traditional fluid valve, the valve seat of the hydraulic control solenoid valve is on the channel housing, and the sealing between the hydraulic control valve and the valve seat can only be checked after the hydraulic control solenoid valve is installed on the channel housing, which is not suitable , the valve seat must be disassembled and reprocessed or the channel housing must be removed

The result is unnecessary assembly and disassembly operations, affecting work efficiency and production costs

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