Air conditioning apparatus returning refrigerating machine oil t

Details Air conditioning apparatus returning refrigerating machine oil t Air conditioning apparatus returning refrigerating machine oil t

1997-12-11

1999-10-26

Sollecito, John M.

Refrigeration

Processes

Lubricant handling

62468, 62192, F25B 4302

Patent

active

059707224

ABSTRACT:
An air conditioning apparatus includes a compressor, an interior side heat exchanger, an exterior side heat exchanger, an expansion device provided between the interior side heat exchanger and the exterior side heat exchanger, a four-way valve provided between the compressor and the interior side heat exchanger and between the compressor and the exterior side heat exchanger, an oil separator provided between a delivery outlet of the compressor and the four-way valve, a first restrictor and a second restrictor provided between the oil separator and a suction inlet of the compressor, and an open-close valve provided between the second restrictor and the suction inlet of the compressor.

REFERENCES:
patent: 5029455 (1991-07-01), Backus et al.

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