Heat pump having improved compressor lubrication

Details Heat pump having improved compressor lubrication Heat pump having improved compressor lubrication

1984-05-16

1985-12-10

Wayner, William E.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62193, 62473, 62503, F25B 3100, F25B 4300

Patent

active

045571155

ABSTRACT:
A heat pump having improved compressor lubrication wherein an adequate amount of refrigerator oil is returned to the compressor at all times and the circulation time for the refrigerator oil is reduced. An oil separator is connected between a discharge side of the compressor and a four-way valve of the heat pump system. A bypass is connected between the oil separator and the accumulator. The bypass is provided with an electromagnetic valve for selectively opening and closing the bypass. A control device periodically opens the electromagnetic valve during the operation of the compressor to provide for supply of refrigerator oil to the compressor from the oil separator.

REFERENCES:
patent: 2665557 (1954-01-01), Dodson

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