Refrigeration – Automatic control – Refrigeration producer
Patent
1979-08-16
1980-12-09
Capossela, Ronald C.
Refrigeration
Automatic control
Refrigeration producer
62505, F25B 4100
Patent
active
042376980
ABSTRACT:
Motor cooling system for refrigeration machine wherein one condenser connected to a main stage of the compressor is used to satisfy the cooling requirements of the system and a second condenser connected to a subsequent higher pressure compressor stage is employed for heating a medium to satisfy heating requirements of the system. The motor cooling system contains a three-way selector valve which connects either condenser selectively to the motor housing in response to the pressure in one condenser exceeding the pressure in the other condenser to provide a sufficient liquid refrigerant to the motor for cooling motor components under all operating conditions. The selector valve comprises a horizontally extending tubular portion having an annular seat at each end of the portion and a vertically extending tubular portion attached thereon. An axially movable ball is arranged in a horizontal portion to open selectively either seat and close selectively the opposite seat in response to the refrigerant pressure acting on the ball.
REFERENCES:
patent: 3112618 (1963-12-01), Weller
patent: 3416327 (1968-12-01), Akerhielm et al.
patent: 3635041 (1972-01-01), Endress et al.
patent: 3665724 (1972-05-01), Anderson et al.
Capossela Ronald C.
Carrier Corporation
Curtin J. Raymond
Daley Donald F.
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