Pressure regulating heater control valve

Details Pressure regulating heater control valve Pressure regulating heater control valve

1992-06-24

1993-02-09

Cohan, Alan

Heating systems

Heat and power plants

Vehicle

1376255, 137116, 165 38, F01P 714

Patent

active

051847736

ABSTRACT:
A pressure relief function is incorporated into a proportional solenoid controlled heater valve for an automobile heater. One of two internal valve seats is spring-biased against an internal shoulder and is exposed to pressure differential across it. When inlet pressure from the engine coolant pump seeks to rise above a predetermined level, the spring-loaded seat unseats thereby diverting some of the flow away from the heater core and back to the pump inlet.

REFERENCES:
patent: 2277814 (1942-03-01), Booth
patent: 2392214 (1946-01-01), Cruzan
patent: 3329165 (1967-07-01), Lang
patent: 3835646 (1974-09-01), Ranft
patent: 4556171 (1985-12-01), Fukami
patent: 4874010 (1989-10-01), DeJong
patent: 4878514 (1989-11-01), DeJong

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