Rankine cycle system

Abstract

A Rankine cycle system includes a refrigerant pump which is mounted on an engine and is configured to feed refrigerant, a heat exchanger which is mounted on the engine and is configured to recover exhaust heat of the engine to the refrigerant, an expander which is mounted on the engine and is configured to convert the exhaust heat recovered to the refrigerant into power by expanding the refrigerant whose temperature has been increased by the heat exchanger, and a condenser which is mounted on a vehicle body and is configured to condense the refrigerant expanded by the expander. The expander and the condenser, and the condenser and the refrigerant pump are connected by flexible pipes having higher flexibility than other pipes.

1 . A Rankine cycle system, comprising:
 a refrigerant pump which is mounted on an engine and is configured to feed refrigerant;   a heat exchanger which is mounted on the engine and is configured to recover exhaust heat of the engine to the refrigerant;   an expander which is mounted on the engine and is configured to convert the exhaust heat recovered to the refrigerant into power by expanding the refrigerant whose temperature has been increased by the heat exchanger; and   a condenser which is mounted on a vehicle body and condenses the refrigerant expanded by the expander; wherein   the expander and the condenser, and the condenser and the refrigerant pump are connected by flexible pipes having higher flexibility than other pipes.   
     
     
         2 . The Rankine cycle system according to  claim 1 , comprising:
 a refrigeration cycle which is configured to share the condenser and the refrigerant; wherein   a compressor provided in the refrigeration cycle is mounted on the engine, a pipe between the expander and the condenser and a pipe between the compressor and the condenser are joined in a state where the pipes are supported on the engine, and a junction and the condenser are connected by a flexible pipe.   
     
     
         3 . The Rankine cycle system according to  claim 1 , wherein an output shaft of the expander and an engine output shaft are configured to be able to transmit power. 
     
     
         4 . A Rankine cycle system, comprising:
 a heat exchanger which is mounted on an engine and is configured to recover exhaust heat of the engine to refrigerant;   an expander which is mounted on the engine and is configured to convert the exhaust heat recovered to the refrigerant into power by expanding the refrigerant whose temperature has been increased by the heat exchanger;   a condenser which is mounted on a vehicle body and is configured to condense the refrigerant expanded by the expander;   a refrigeration cycle of an air conditioner which is configured to share the condenser and the refrigerant;   a first pipe which is connected to the expander; and   a third pipe which is connected to the first pipe and a second pipe connected to a compressor of the refrigeration cycle and is configured to introduce the refrigerant to the condenser; wherein   either one of the first and third pipes has higher flexibility than the other.   
     
     
         5 . The Rankine cycle system according to  claim 4 , wherein
 the compressor is mounted on the vehicle body; and   the first pipe has higher flexibility than the second and third pipes.   
     
     
         6 . The Rankine cycle system according to  claim 4 , wherein
 the compressor is mounted on the engine; and   the first and second pipes have higher flexibility than the third pipe.   
     
     
         7 . The Rankine cycle system according to  claim 4 , wherein
 the compressor is mounted on the engine; and   the third pipe has higher flexibility than the first and second pipes.   
     
     
         8 . The Rankine cycle system according to  claim 4 , comprising:
 a refrigerant pump which is configured to supply the refrigerant condensed by the condenser to the heat exchanger;   a fourth pipe which is connected to the refrigerant pump; and   a sixth pipe which is connected to the fourth pipe and a fifth pipe connected to an evaporator of the refrigeration cycle and in which the refrigerant discharged from the condenser flows; wherein   either one of the fourth and sixth pipes has higher flexibility than the other.   
     
     
         9 . The Rankine cycle system according to  claim 4 , wherein
 an output shaft of the expander and an output shaft of the engine are configured to be able to transmit power.