Cryogenic refrigeration system

Abstract

Provided is a cryogenic refrigeration system. The cryogenic refrigeration system includes a cryogenic refrigerator, and a heat dissipation module configured to cool the cryogenic refrigerator. Here, the heat dissipation module includes a condenser configured to condense a refrigerant that cools the cryogenic refrigerator, and a heat exchanger connected to the cryogenic refrigerator to circulate the refrigerant between the cryogenic refrigerator and the condenser, thereby cooling the cryogenic refrigerator.

1 . A cryogenic refrigeration system comprising:
 a cryogenic refrigerator; and   a heat dissipation module configured to cool the cryogenic refrigerator,   wherein the heat dissipation module comprises:   a condenser spaced apart from the cryogenic refrigerator to condense a refrigerant that cools the cryogenic refrigerator; and   a heat exchanger connected to the cryogenic refrigerator to circulate the refrigerant between the cryogenic refrigerator and the condenser, thereby cooling the cryogenic refrigerator.   
     
     
         2 . The cryogenic refrigeration system of  claim 1 , wherein the cryogenic refrigerator comprises a gas cooling part configured to expand a gas, thereby cooling the gas, and
 the heat exchanger comprises a first heat exchanger configured to cool the gas cooling part.   
     
     
         3 . The cryogenic refrigeration system of  claim 2 , wherein the gas cooling part comprises:
 a cylinder comprising an expansion region in which the gas is expanded and a compression region defined below the expansion region;   a displacer disposed in the cylinder to move between the expansion region and the compression region; and   a piston disposed below the displacer to move in the compression region,   wherein the first heat exchanger is disposed in the compression region.   
     
     
         4 . The cryogenic refrigeration system of  claim 3 , wherein the cryogenic refrigerator further comprises a power generation part configured to generate power provided to the displacer and the piston, and
 the heat exchanger further comprises a second heat exchanger configured to cool the power generation part.   
     
     
         5 . The cryogenic refrigeration system of  claim 4 , wherein the cryogenic refrigerator further comprises a power conversion part disposed below the cylinder to convert the power generated in the power generation part, and
 the heat exchanger further comprises a third heat exchanger configured to cool the power conversion part.   
     
     
         6 . The cryogenic refrigeration system of  claim 5 , wherein the heat dissipation module further comprises:
 a heat exchange collecting line configured to connect the first heat exchanger to the second heat exchanger; and   a heat exchange supply line configured to connect the first heat exchanger to the third heat exchanger.   
     
     
         7 . The cryogenic refrigeration system of  claim 5 , wherein the heat dissipation module comprises:
 a refrigerant collecting line connected between the second heat exchanger and the condenser to collect the refrigerant; and   a refrigerant supply line connected between the third heat exchanger and the condenser to supply the refrigerant.   
     
     
         8 . The cryogenic refrigeration system of  claim 7 , further comprising:
 a compressor disposed in the refrigerant collecting line to compress the refrigerant; and   an expander disposed in the refrigerant supply line to expand the refrigerant.   
     
     
         9 . The cryogenic refrigeration system of  claim 8 , wherein the heat dissipation module further comprises:
 a first pressure transducer disposed in the refrigerant collecting line between the condenser and the second heat exchanger to detect a pressure of the refrigerant;   a first temperature sensor disposed in the refrigerant collecting line disposed adjacent to the first pressure transducer to detect a temperature of the refrigerant; and   a circulation flow rate controller configured to receive a pressure detection signal and a temperature detection signal of the first pressure transducer and the first temperature sensor to control the expander.   
     
     
         10 . The cryogenic refrigeration system of  claim 8 , wherein the heat dissipation module further comprises:
 a bypass valve disposed in the refrigerant collecting line between the condenser and the compressor, and   a bypass line branched from the bypass valve and connected to the refrigerant supply line between the expander and the third heat exchanger by bypassing the condenser.   
     
     
         11 . The cryogenic refrigeration system of  claim 10 , wherein the heat dissipation module further comprises:
 a second pressure transducer disposed in the refrigerant collecting line between the compressor and the second heat exchanger to detect a pressure of the refrigerant;   a second temperature sensor disposed in the refrigerant collecting line disposed adjacent to the second pressure transducer to detect a temperature of the refrigerant; and   a bypass controller configured to receive a pressure detection signal and a temperature detection signal of the second pressure transducer and the second temperature sensor to control the bypass valve.   
     
     
         12 . The cryogenic refrigeration system of  claim 10 , wherein the heat dissipation module further comprises a sensitive heat tube disposed in the refrigerant collecting line between the compressor and the second heat exchanger to detect a temperature of the refrigerant, thereby outputting turn-on and turn-off signals of the expander. 
     
     
         13 . A cryogenic refrigeration system comprising:
 a cryogenic refrigerator comprising a power generation part, a power conversion part configured to convert power generated in the power generation part, and a gas cooling part configured to cool a gas by using the power converted in the power conversion part; and   a heat dissipation module configured to circulate a refrigerant that cools the cryogenic refrigerator into the power generation part, the power conversion part, and the gas cooling part.   
     
     
         14 . The cryogenic refrigeration system of  claim 13 , wherein the heat dissipation module comprises:
 a condenser configured to condense the refrigerant; and   a heat exchanger configured to provide the refrigerant condensed in the condenser to the power generation part, the power conversion part, and the gas cooling part.   
     
     
         15 . The cryogenic refrigeration system of  claim 14 , wherein the heat dissipation module further comprises:
 a refrigerant collecting line configured to collect the refrigerant between the condenser and the heat exchanger; and   a refrigerant supply line configured to supply the refrigerant between the condenser and the heat exchanger.   
     
     
         16 . The cryogenic refrigeration system of  claim 15 , wherein the heat exchanger comprises:
 a first heat exchanger configured to cool the gas cooling part;   a second heat exchanger configured to cool the power generation part; and   a first heat exchanger configured to cool the power conversion part.   
     
     
         17 . The cryogenic refrigeration system of  claim 16 , wherein the heat dissipation module further comprises:
 a heat exchange refrigerant collecting line configured to collect the refrigerant between the first heat exchanger and the second heat exchanger; and   a heat exchange refrigerant supply line configured to supply the refrigerant between the first heat exchanger and the third heat exchanger.   
     
     
         18 . The cryogenic refrigeration system of  claim 16 , wherein the gas cooling part comprises a cylinder having an expansion region in which the gas is expanded and a compression region in which the gas is compressed, and
 the first heat exchanger is disposed in the compression region.   
     
     
         19 . The cryogenic refrigeration system of  claim 15 , wherein the heat dissipation module further comprises:
 a compressor disposed in the refrigerant collecting line to compress the refrigerant;   a pressure transducer disposed between the compressor and the heat exchanger to detect a pressure of the refrigerant;   an expander disposed in the refrigerant supply line to expand the refrigerant; and   a circulation flow rate controller configured to receive a pressure detection signal of the pressure transducer to control the expander.   
     
     
         20 . The cryogenic refrigeration system of  claim 15 , wherein the heat dissipation module further comprises:
 a bypass valve disposed in the refrigerant collecting line; and   a bypass line connected to the bypass valve and connected to the refrigerant supply line by bypassing the condenser.