Cooling system

Abstract

A cooling system ( 1 ) includes: a compressor ( 12 ) that circulates refrigerant; a heat exchanger ( 14 ) and a heat exchanger ( 15 ) that carry out heat exchange between refrigerant and outside air; a decompressor ( 16 ) that decompresses refrigerant; a heat exchanger ( 18 ) that carries out heat exchange between refrigerant and air-conditioning air; a cooling portion ( 30 ) that is provided in a path of refrigerant flowing between the heat exchanger ( 14 ) and the heat exchanger ( 15 ) and that uses refrigerant to cool a heat generating source ( 31 ); a first line ( 24 ) through which refrigerant circulates between the cooling portion ( 30 ) and the heat exchanger ( 15 ); a second line ( 27 ) through which refrigerant circulates between the heat exchanger ( 18 ) and the compressor ( 12 ); and an internal heat exchanger ( 40 ) in which refrigerant that circulates through the first line ( 24 ) and refrigerant that circulates through the second line ( 27 ) exchange heat with each other.

1 . A cooling system for cooling a heat generating source, comprising:
 a compressor configured to circulate refrigerant;   a first heat exchanger and a second heat exchanger configured to carry out heat exchange between the refrigerant and outside air;   a decompressor configured to decompress the refrigerant;   a third heat exchanger configured to carry out heat exchange between the refrigerant and air-conditioning air;   a cooling portion provided in a path of the refrigerant flowing between the first heat exchanger and the second heat exchanger, the cooling portion configured to use the refrigerant to cool the heat generating source;   a first line through which the refrigerant flows between the cooling portion and the second heat exchanger;   a second line through which the refrigerant flows between the third heat exchanger and the compressor; and   an internal heat exchanger in which the refrigerant that flows through the first line and the refrigerant that flows through the second line exchange heat with each other.   
     
     
         2 . The cooling system according to  claim 1 , wherein
 the internal heat exchanger is arranged between the cooling portion and the second heat exchanger.   
     
     
         3 . The cooling system according to  claim 1 , further comprising:
 a third line through which the refrigerant flows between the compressor and the first heat exchanger; and   a fourth line configured to provide fluid communication between the first line and the third line.   
     
     
         4 . The cooling system according to  claim 3 , further comprising:
 a selector valve configured to switch a state of fluid communication between the fourth line, and the first line and the third line.   
     
     
         5 . The cooling system according to  claim 4 , wherein
 the selector valve is configured so as to switch the state of fluid communication into a state where the refrigerant flows through the fourth line during a stop of the compressor.   
     
     
         6 . The cooling system according to  claim 3 , wherein
 the cooling portion is arranged below the first heat exchanger.   
     
     
         7 . The cooling system according to  claim 1 , further comprising:
 a four-way valve configured to switch between flow of the refrigerant from the compressor toward the first heat exchanger and flow of the refrigerant from the compressor toward the third heat exchanger.   
     
     
         8 . The cooling system according to  claim 1 , wherein
 the first heat exchanger and the second heat exchanger are integrally arranged.