Solenoid pump operated valve

Details Solenoid pump operated valve Solenoid pump operated valve

1996-08-27

1998-06-02

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

60432, 60477, 251 57, F16K 3104, F16K 31126

Patent

active

057588627

ABSTRACT:
A flow control valve that has a solenoid operated pump that moves a poppet between an open and a closed position. The valve has a housing with an inlet, an outlet and a housing chamber that can allow fluid to flow from the inlet to the outlet. The poppet is located within the housing chamber and is adapted to move from an open position to a closed position, to control the flow of fluid through the valve. Attached to the poppet is a pump that has a first pump chamber separated from a second pump chamber by a wall. The wall has a first one way valve that allows fluid to flow from the second chamber to the first chamber. The second chamber has a diaphragm attached to a solenoid. The solenoid is provided with a series of energizing pulses that move the diaphragm and cause the second chamber to expand and contract. The pumping action of the second chamber causes fluid to flow into the first chamber. The first chamber thereby expands and moves the poppet into the open position. When the pump is turned off, a return spring moves the poppet back into the closed position.

REFERENCES:
patent: 3120103 (1964-02-01), Beard et al.
patent: 3175500 (1965-03-01), Zeigler
patent: 3200591 (1965-08-01), Ray
patent: 4054155 (1977-10-01), Hill
patent: 4247077 (1981-01-01), Banick et al.
patent: 4463773 (1984-08-01), Kojima et al.

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