Evaporator pressure regulator

Details Evaporator pressure regulator Evaporator pressure regulator

F - Mech Eng,Light,Heat,Weapons

16

K

137/44

F16K 21/06 (2006.01)

Patent

CA 1039147

ABSTRACT OF THE DISCLOSURE 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 con- ditioning 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 mini- mizing 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.

271400

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