Refrigeration – With indicator or tester – Operatively correlated with automatic control
Patent
1995-03-02
1996-07-23
Tanner, Harry B.
Refrigeration
With indicator or tester
Operatively correlated with automatic control
62158, 62161, 62180, F25B 4902
Patent
active
055378340
ABSTRACT:
The present invention involves an inductively activated silicon switch for a control and protection circuit for motors and compressors. The circuit includes a logic gate for combining both motor control and protection functions. The logic gate has inputs from a thermostat, a compressor shell temperature circuit, a fan overheat detection circuit, a motor start relay circuit, and motor load sensing circuits. The logic gate output is connected to an oscillator for inductively activating the power output stage, as well as a start relay, a compressor shell temperature hysteresis circuit, and a fan timer circuit connected to the fan control circuit. The control circuitry further includes an over-ride circuit for manually allowing a limited number of immediate restart attempts.
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Tanner Harry B.
Tecumseh Products Company
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