Refrigeration – Automatic control – Refrigeration producer
Patent
1997-09-26
1999-03-02
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62126, 361 22, F25B 4902
Patent
active
058756418
ABSTRACT:
Problems in shutting down the compressor in a vapor compression air conditioner in response to high pressure, low pressure and frozen refrigerant conditions are eliminated in a protection circuit that includes a contactor coil to control the power supply to the compressor. The use of a semiconductor switching configuration in the protection circuit provides for disconnecting the power to the compressor under fault conditions and for ensuring that the power connection to the compressor remains disabled until the conditions which initially triggered the protection circuit are corrected.
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Jonsson Gregg
Palasz Mark A.
Siemens Energy & Automation Inc.
Tanner Harry B.
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