Refrigeration – Automatic control – Refrigeration producer
Patent
1994-12-21
1996-06-04
Wayner, William E.
Refrigeration
Automatic control
Refrigeration producer
62470, 62510, 417228, F25B 3100, F04B 3904
Patent
active
055222331
ABSTRACT:
In a system having low and high stage compressors with an oil separator downstream of each stage there can be a tendency for oil from the first stage to collect in the second stage. So, responsive to a low level of oil in the first stage oil system, oil is supplied from the second stage oil system to the first stage oil system.
REFERENCES:
patent: 3719057 (1973-03-01), Grant
patent: 4947655 (1990-08-01), Shaw
patent: 5016447 (1991-05-01), Lane et al.
Holden Steven J.
Nares Terry
Carrier Corporation
Wayner William E.
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