Refrigerant purge valve

Details Refrigerant purge valve Refrigerant purge valve

1989-12-22

1991-01-08

King, Lloyd L.

Refrigeration

Refrigeration producer

With refrigerant treater

62 85, 62195, 137544, F25B 4304

Patent

active

049825780

ABSTRACT:
This valve (12) for sensing and purging non-condensible gases in a refrigerant includes a valve body (30) having a lower refrigerant inlet (32), an upper exhaust outlet (36) and a valve passage (44) therebetween controlled by a valve element (54) extending between a spring (72) and a diaphragm (86). A housing (100) containing a "pure" refrigerant charge and a spring (110) are provided at the other side of the diaphragm (86) and the housing (100) is exposed to temperature of the system refrigerant. One side of the diaphragm (86) is subjected to the combined pressure of the spring (72) and the pressure of the system refrigerant at the inlet (32) and the other side of the diaphragm (86) is subjected to the balancing pressure provided by the combined pressure of the refrigerant charge and the spring (110). The valve (12) opens in response to increased pressure of the system refrigerant at the inlet (32) resulting from the presence of non-condensible gases and exhausts the gases to atmosphere.

REFERENCES:
patent: 2400620 (1946-05-01), Zwickl
patent: 3013404 (1961-12-01), Endress et al.
patent: 3367130 (1968-02-01), Owens
patent: 4304102 (1981-12-01), Gray
patent: 4805416 (1989-02-01), Manz et al.
patent: 4809520 (1989-03-01), Manz
patent: 4856289 (1989-08-01), Lofland
patent: 4856290 (1989-08-01), Rodda

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