Compressor start-up controller

Details Compressor start-up controller Compressor start-up controller

1994-02-16

1996-05-21

Bertsch, Richard A.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417 12, 417 14, 417278, 4174105, F04B 4906

Patent

active

055183735

ABSTRACT:
A compressor start-up controller includes a compressing section (37-39) for compressing a refrigerant; a motor (25) connected to the compressing section for rotating the compressing section; a drive circuit (10) connected to the motor for driving the motor; a rotation detecting device (1) connected to the drive circuit for detecting whether the motor is normally rotating; a control unit (8) connected to the drive circuit for operating the motor in a step mode at a very slow rotation at its start-up for effecting electricity conducting control to gradually increase or decrease commutating current at a very slow speed during the step mode operation at the motor start-up.

REFERENCES:
patent: 4389171 (1983-06-01), Eber et al.
patent: 4510422 (1985-04-01), Ogura
patent: 4759696 (1988-07-01), Ishiai
patent: 4763347 (1988-08-01), Erdman
patent: 4992718 (1991-02-01), Kumaki

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