Normal direction heater for compressor crankcase heat

H - Electricity – 05 – B

Patent

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309/81

H05B 3/22 (2006.01) F01M 5/02 (2006.01) F04B 39/02 (2006.01) F25B 43/00 (2006.01)

Patent

CA 2040842

The present invention is a crankcase heater for preventing the migration of liquid refriger- ant. The heater is located on the compressor housing surface near the oil sump. The heater is positioned within a fence of a terminal assembly, covering substantially all the surface area en- closed by the fence except for the terminal clus- ter itself. The heater provides heat to the hous- ing and the interior of the compressor, and the gasket insulates the heater and interiorly re- flects the heat produced. Liquid refrigerant in the oil sump is boiled off to increase the pres- sure inside the housing and inhibit migration of refrigerant from the evaporator or accumulator.

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