Refrigeration – Reversible – i.e. – heat pump – With product treatment
Patent
1978-10-02
1980-08-05
King, Lloyd L.
Refrigeration
Reversible, i.e., heat pump
With product treatment
62503, 62512, F25B 1300, F25B 4300
Patent
active
042155550
ABSTRACT:
A method and apparatus utilizing a hot gas defrost system wherein superheated gas from the system compressor outlet is conducted directly into the heat exchanger to be defrosted, by-passing the condenser and thermal expansion valve to effect removal of the frost and ice accumulation on the heat exchanger surface. A portion of the hot compressor discharge gas is conducted directly into an accumulator with the liquid refrigerant received from the heat exchanger to be defrosted, the liquid refrigerant resulting from the gaseous refrigerant being condensed in the heat exchanger as the ice is melted. The refrigerant condensed to a liquid during defrost is vaporized in the accumulator thereby providing a supply of gaseous refrigerant to the compressor suction line, said gaseous refrigerant being a combination of the non-condensed discharge gas conducted to the accumulator and the liquid refrigerant vaporized in the accumulator.
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Cann Peter L.
Sacks Paul S.
Carrier Corporation
Curtin J. Raymond
Hayter Robert P.
King Lloyd L.
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