Oscillation reducing apparatus for rotary compressor

Details Oscillation reducing apparatus for rotary compressor Oscillation reducing apparatus for rotary compressor

1986-03-14

1987-12-29

Dobeck, Benjamin

Electricity: motive power systems

Automatic and/or with time-delay means

Sound, supersonic vibration or mechanical vibration

318432, 318651, G05B 501

Patent

active

047163470

ABSTRACT:
In a rotary compressor provided with a motor to be controlled by an inverter, the power-supply frequency or impressed voltage during one rotation of the induction motor is varied in accordance with the changes in the load torque to make the production torque of the induction motor correspond to the changes in the load torque so as to fundamentally and effectively reduce the oscillations which are caused by the load torque changes.

REFERENCES:
patent: 3809488 (1974-05-01), Sonderegger
patent: 4491775 (1985-01-01), Harvey et al.
patent: 4556830 (1985-12-01), Schwalm et al.
patent: 4574226 (1986-03-01), Binder
patent: 4626754 (1986-12-01), Habermann
patent: 4633982 (1987-01-01), Swigert

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