Refrigeration device

Abstract

A refrigeration device includes: a refrigerant circuit in which a compressor, a condenser, a decompressor, and an evaporator are connected circularly in the stated order; and a regenerative refrigerator including a heat dissipation portion that compresses a working fluid enclosed in a chamber and dissipates heat produced by compression, and a heat absorption portion in which the working fluid compressed in the heat dissipation portion is expanded. A refrigerant in the condenser is cooled by heat exchange between the condenser and the heat absorption portion.

What is claimed is: 
     
         1 . A refrigeration device comprising:
 a refrigerant circuit in which a compressor, a condenser, a decompressor, and an evaporator are connected circularly in the stated order; and   a regenerative refrigerator including a heat dissipation portion that compresses a working fluid enclosed in a chamber and dissipates heat produced by compression, and a heat absorption portion in which the working fluid compressed in the heat dissipation portion is expanded, wherein   a refrigerant in the condenser is cooled by heat exchange between the condenser and the heat absorption portion.   
     
     
         2 . The refrigeration device according to  claim 1 , further comprising:
 a first thermal siphon including a first condensation unit and a first evaporation unit; and   a storage chamber cooled by each of the evaporator and the first evaporation unit, wherein   a refrigerant in the first condensation unit is cooled and condensed by heat exchange between the first condensation unit and the heat absorption portion, and   the storage chamber is cooled by evaporation of the refrigerant in the first evaporation unit.   
     
     
         3 . The refrigeration device according to  claim 1 , further comprising:
 a first thermal siphon including a first condensation unit and a first evaporation unit;   a first storage chamber cooled by the evaporator; and   a second storage chamber cooled by the first evaporation unit, wherein   a refrigerant in the first condensation unit is cooled and condensed by heat exchange between the first condensation unit and the heat absorption portion, and   the second storage chamber is cooled by evaporation of the refrigerant in the first evaporation unit.   
     
     
         4 . The refrigeration device according to  claim 1 , further comprising:
 a second thermal siphon including a second condensation unit and a second evaporation unit, wherein   a refrigerant in the second condensation unit is cooled and condensed by heat exchange between the second condensation unit and the heat absorption portion, and   the refrigerant in the condenser is cooled by heat exchange between the second evaporation unit and the condenser.   
     
     
         5 . The refrigeration device according to  claim 1 , wherein
 the heat absorption portion is directly in contact with the condenser.   
     
     
         6 . The refrigeration device according to  claim 1 , wherein
 the regenerative refrigerator is a Stirling refrigerator.