Refrigeration – Processes – Lubricant handling
Patent
1996-01-02
1997-02-18
Sollecito, John M.
Refrigeration
Processes
Lubricant handling
62475, 62292, 62 85, 62 77, 62149, 62470, F25B 4302
Patent
active
056032234
ABSTRACT:
In a refrigerant recovery system, a refrigerant compressor has an inlet for connection to a source of refrigerant to be recovered and an outlet for connection to a refrigerant storage container. A separator is connected in series with the compressor for separating lubricant from refrigerant either before or after passage of the refrigerant through the compressor. A valve or other suitable means is operatively connected between the inlet and outlet of the compressor for equalizing pressure across the compressor during non-operation of the compressor. A pressure sensor is coupled to the refrigerant recovery system and responsive to refrigerant pressure at the lubricant separator. A manual or automatic valve is coupled to a drain on the separator for draining lubricant from the separator during non-operation of the compressor when refrigerant pressure at the separator reaches a selected level during non-operation of the compressor.
REFERENCES:
patent: 4364236 (1982-12-01), Lower et al.
patent: 4768347 (1988-09-01), Manz et al.
patent: 4809520 (1989-05-01), Manz et al.
patent: 4862699 (1989-09-01), Lounis
patent: 5042271 (1991-08-01), Manz
"The Challenge of Recycling" Business News Publishing, 1995 p. 22.
Manz Kenneth W.
Murray Gary P.
Murray Walter D.
Sollecito John M.
SPX Corporation
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