Bearing pump control for lubricating hydrodynamic compressor bea

Details Bearing pump control for lubricating hydrodynamic compressor bea Bearing pump control for lubricating hydrodynamic compressor bea

1990-07-10

1992-02-18

Tanner, Harry B.

Refrigeration

Processes

Lubricant handling

62192, 62469, 62DIG2, F25B 3102

Patent

active

050882929

ABSTRACT:
A refrigeration system (10) having a compressor rotor (20) rotatably supported by a plurality of hydrodynamic bearings (22 and 24) lubricated by oiless pressurized liquid refrigerant supplied to a refrigerant circuit (36) coupled to the hydrodynamic bearings at least in part from the compressor rotor and pressurizing refrigerant which flows to a condenser (34) providing liquid refrigerant which flows to an evaporator (68) in fluid communication with the condenser includes a bearing pump (26), coupled to the refrigerant circuit and to the condenser, for providing pressurized refrigerant to the refrigerant circuit at a pressure higher than a pressure of the refrigerant provided by the compressor rotor when the bearing pump is operating; and a controller (28) for activating the bearing pump in accordance at least one the predetermined conditions of operation of the refrigeration system.

REFERENCES:
patent: 2949750 (1960-08-01), Kramer
patent: 3081606 (1963-03-01), Brose et al.
patent: 3221984 (1964-04-01), Ditzler
patent: 3422635 (1969-01-01), Trenkowitz
patent: 3728857 (1973-04-01), Nichols
patent: 4598556 (1986-07-01), Mokadam
patent: 4809521 (1989-03-01), Mokadam
"A New Technology in Energy-Efficient Electrically Driven Aircraft Environmental Control Systems", by W. Cloud, J. McNamara and David B. Wigmore, presented at the 21st IECEC Conference, Aug. 25-29, 1986, Art #869390 American Chemical Society, pp. 1606-1702.

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