Cold stocker

Abstract

In a cold stocker according to the present invention, a compartment-cooling heat exchanger is connected to a cold-side heat exchanger mounted to a cold section of a Stirling refrigerating engine so as to form a cold-side refrigerant circulation circuit. To a warm section of the Stirling refrigerating engine, a first warm-side heat exchanger and a second warm-side heat exchanger are mounted. A heat-dissipating heat exchanger is connected to the first warm-side heat exchanger so as to form a first warm-side refrigerant circulation circuit. To the second warm-side heat exchanger are connected a heat exchange portion for promoting evaporation in drainage and a heat exchange portion for preventing dew condensation on a cold stocker wall so as to form a second warm-side refrigerant circulation circuit.

1 .- 18 . (canceled)  
   
   
       19 . A cold stocker that uses a Stirling refrigerating engine to cool a compartment thereof, comprising: 
 a first warm-side refrigerant circulation circuit that is built as a thermosyphon and that comprises a warm-side heat exchanger provided in a warm section of the Stirling refrigerating engine and a heat-dissipating heat exchanger for dissipating heat to an outside environment of the cold stocker; and    a second warm-side refrigerant circulation circuit that comprises: the warm-side heat exchanger; a heat exchanger used for at least one of tasks of promoting evaporation in drainage and preventing dew condensation on a cold stocker wall; and a circulation pump,    wherein the warm-side heat exchanger and the heat exchanger are so structured that a refrigerant in the warm-side heat exchanger is sent out to the heat exchanger.    
   
   
       20 . The cold stocker of  claim 19 , comprising two of the warm-side heat exchangers, wherein 
 the first warm-side refrigerant circulation circuit and the second warm-side refrigerant circulation circuit are connected in parallel with each of the two warm-side heat exchangers.    
   
   
       21 . The cold stocker of  claim 19 , wherein 
 a heat exchanger provided for promoting evaporation in drainage and a heat exchanger provided for preventing dew condensation on the cold stocker wall are connected in parallel with each other and are provided with a valve one for each, so as to form the second warm-side refrigerant circulation circuit.    
   
   
       22 . The cold stocker of  claim 19 , wherein 
 a refrigerant in the warm-side heat exchanger is in a gas-liquid two-phase condition.    
   
   
       23 . The cold stocker of  claim 20 , wherein 
 a heat exchanger provided for promoting evaporation in drainage and a heat exchanger provided for preventing dew condensation on the cold stocker wall are connected in parallel with each other and are provided with a valve one for each, so as to form the second warm-side refrigerant circulation circuit.    
   
   
       24 . The cold stocker of  claim 20 , wherein 
 a refrigerant in the warm-side heat exchanger is in a gas-liquid two-phase condition.    
   
   
       25 . The cold stocker of  claim 21 , wherein 
 a refrigerant in the warm-side heat exchanger is in a gas-liquid two-phase condition.