Refrigerant recovery and recharging system with automatic oil dr

Details Refrigerant recovery and recharging system with automatic oil dr Refrigerant recovery and recharging system with automatic oil dr

1999-03-19

2000-10-31

McDermott, Corrine

Refrigeration

Automatic control

Withdrawing or adding refrigerant from or to normally closed...

62 84, 62192, 62195, F25B 4500, F25B 4304

Patent

active

061384623

ABSTRACT:
A conduit is coupled to an oil accumulator with an orifice coupled in series with the conduit for limiting the flow of oil therethrough. A pressure sensor is coupled to the conduit for measuring the pressure in the conduit. An oil drain control solenoid valve is coupled to an electrical circuit also coupled to the pressure sensor for selectively opening the oil drain for the draining of oil into a collection tank without losing refrigerant.

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