Stirling system and freezer system using the same

Abstract

There is disclosed a stirling system in which a rotary-type high-temperature expansion mechanical section, a rotary-type low-temperature compression mechanical section and a driving shaft common to both the mechanical sections are stored in a sealed container to achieve remarkable simplification and improvement of durability. In the stirling system, the rotary-type high-temperature expansion mechanical section and the rotary-type low-temperature compression mechanical section for constituting a stirling cycle, and the driving shaft common to both the mechanical sections are stored in the sealed container. The sealed container is divided into a rotary-type high-temperature expansion mechanical section side and a rotary-type low-temperature compression mechanical section side by a partition wall.

1 : A stirling system wherein a rotary-type high-temperature expansion mechanical section and a rotary-type low-temperature compression mechanical section which constitute a stirling cycle, and a driving shaft common to both the mechanical sections are stored in a sealed container, and the sealed container is divided into a rotary-type high-temperature expansion mechanical section side and a rotary-type low-temperature compression mechanical section side by a partition wall. 
   
   
       2 : The stirling system according to  claim 1 , wherein a control mechanism which controls a performance characteristic of the stirling cycle, and a generator or a motor are directly connected to the driving shaft on the rotary-type low-temperature compression mechanical section side in the sealed container. 
   
   
       3 : The stirling system according to  claim 1  or  2 , wherein a heater, a cooler and a regenerative heat exchanger which constitute the stirling cycle are integrated with the sealed container inside or outside the sealed container. 
   
   
       4 : The stirling system according to  claim 1  or  2 , which further comprises: a press feed mechanism of a lubricant which lubricates sliding sections in the sealed container; and a return mechanism which separates the lubricant from an operation gas discharged from the sealed container to return the lubricant into the sealed container. 
   
   
       5 : A freezer system in which the stirling system according to  claim 1  or  2  is used, the freezer system comprising a motor which drives a driving shaft and configured to operate a stirling cycle of the stirling system in a reverse cycle.