Evaporator pressure regulator

Details Evaporator pressure regulator Evaporator pressure regulator

1977-01-24

1982-06-22

Wayner, William E.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

62217, 137529, F25B 4104, F16K 3112

Patent

active

043357423

ABSTRACT:
Pressure acting on the face of the poppet valve is opposed by a gas charge or a spring in the bellows. The valve controls evaporator pressure in an automotive air conditioning system. Destructive response to pressure pulses from the compressor is prevented by the static friction obtained by having a leaf spring bear on opposed sides of a self-lubricating plastic sleeve carried on a shaft fixed on the valve. The various modifications show ways of minimizing the effect of temperature change through the valve and minimizing the differential of the valve. One modification provides a temperature responsive charge in the bellows and the mean effective area of the bellows is greater than the mean effective area of the valve orifice to compensate the closing force and reduce the valve differential.

REFERENCES:
patent: 1620322 (1927-03-01), Browne
patent: 2168367 (1939-08-01), Kucher
patent: 2240284 (1941-04-01), Buchanan
patent: 2437187 (1948-03-01), Eshbaugh
patent: 3414009 (1968-12-01), Merchant

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