HEAT PUMP UNIT
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United States of America Patent
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app pub date -
Feb 18, 2015
filing date -
Feb 25, 2010
priority date (Note) -
Abandoned
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Abstract
To prevent the decline in the volumetric efficiency and the decline in the performance of the heat pump having the reciprocating compressor integrated therein by decreasing the temperature of discharge gas in the reciprocating compressor with a simple construction, a heat pump unit 1 constituting a heat pump cycle in which the reciprocating compressor 3, a condenser 5, an expansion valve 7 and an evaporator 8 are interposed in a refrigerant circulating path 2,comprises a refrigerant-liquid returning path 9 for returning a portion of the refrigerant liquid having been condensed by the condenser 5 to a discharge chamber provided in a cylinder top assembly 20 of the reciprocating compressor 3 so that a portion of the refrigerant liquid is supplied to the discharge chamber 36 via the refrigerant-liquid returning path 9 and a discharge gas passageway 36a is cooled by evaporative latent heat of the refrigerant liquid.
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