Hermetic electric compressor with improved temperature responsiv

Details Hermetic electric compressor with improved temperature responsiv Hermetic electric compressor with improved temperature responsiv

1996-02-09

2000-11-07

Thai, Xuan M.

Pumps

Condition responsive control of pump drive motor

Responsive to pump or pump fluid temperature

62126, 622284, 361 22, 361 24, F04B 4910

Patent

active

061427411

ABSTRACT:
A hermetic electric compressor includes a motor unit having a stator coil and a compressor unit driven by the motor unit for compressing refrigerant gas. A temperature sensor is provided at the stator coil for monitoring a temperature of the stator coil. A control unit is further provided to control a rotational frequency or speed of the motor unit via the stator coil depending on the monitored temperature of the stator coil. The temperature sensor and the control unit are connected via a shielded cable or a twisted pair. The shielded cable or the twisted pair may be grounded via a capacitor. Further, a thermostat may also be provided at the stator coil and connected in series to the temperature sensor.

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patent: 5368446 (1994-11-01), Rode
patent: 5509786 (1996-04-01), Mizutani et al.

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