Refrigeration – Automatic control – Refrigeration producer
Patent
1997-10-23
1999-03-16
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62469, 418102, F25B 3102
Patent
active
058815643
ABSTRACT:
A compressor (30) for use in a refrigerator, which has a rotary shaft (33) supported by bearings (39 to 42) to be lubricated by a liquid refrigerant and is adapted to permit the rotary shaft 33 to continue rotating for a while after a liquid refrigerant pump (36) is stopped at, for example, a power failure, thereby preventing the bearings (39 to 42) from being damaged. To that end, the compressor (30) is further provided with a header (52) for storing a predetermined amount of a high-pressure liquid refrigerant, and with check valves (51, 54 and 56) for maintaining the internal pressure of this header (52) at a high pressure for a predetermined time period after a power failure occurs.
REFERENCES:
patent: 3931718 (1976-01-01), Haselden
patent: 5066197 (1991-11-01), Champagne
patent: 5088292 (1992-02-01), Champagne et al.
patent: 5167496 (1992-12-01), Jacobsson et al.
Kishimoto Akio
Ueda Kenji
Yoshida Zen-ichi
Mitsubishi Heavy Industries Ltd.
Tanner Harry B.
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