Refrigeration – Automatic control – Preventing – removing or handling atmospheric condensate
Patent
1998-08-20
1999-10-26
Tanner, Harry B.
Refrigeration
Automatic control
Preventing, removing or handling atmospheric condensate
62193, 622284, F24F 1100
Patent
active
059707275
ABSTRACT:
A refrigerating cycle apparatus including an inverter driven compressor with controllable speed of rotation, a four-way valve, an indoor heat exchanger, a pressure reducing device, outdoor heat exchanger, a defrosting condition detector for detecting a frosting state of the outdoor heat exchanger in a heating operation, a defrosting operation controller for carrying out a defrosting operation based on a detection signal from the defrosting condition detector and having a minimum operable frequency controller for controlling a minimum operable frequency for the compressor on restarting after completion of the defrosting operation and/or a starting speed controller for controlling a starting speed for the compressor based on a detection signal from the defrosting condition detector on restarting after completion of the defrosting operation in order to provide proper lubrication after a defrost operation.
REFERENCES:
patent: 4724680 (1988-02-01), Kawai
patent: 4901534 (1990-02-01), Nakatsuno et al.
patent: 5323619 (1994-06-01), Kim
Hiraoka Hajime
Imaki Yasuo
Ishioka Hidenori
Isono Kazuaki
Makino Hiroaki
Mitsubishi Denki & Kabushiki Kaisha
Tanner Harry B.
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