Apparatus for cooling hydrogen recirculation blower for fuel cell vehicle

Abstract

The present invention provides an apparatus for cooling a hydrogen recirculation blower for a fuel cell vehicle the apparatus including: a blower housing including an inlet and an outlet for hydrogen recirculation provided in a front part thereof, and an impeller and a motor for driving the hydrogen recirculation blower provided therein; a cooling passage, through which hydrogen is supplied to the blower housing to provide heat exchange, provided to the blower housing; and a hydrogen supply line, through which hydrogen is supplied to the cooling passage to cool the motor, branched from a hydrogen supply pipe and connected to the blower housing, thereby improving cooling efficiency of the motor and ensuring stability of the fuel cell system.

1 . An apparatus for cooling a hydrogen recirculation blower for a fuel cell vehicle, wherein a portion of hydrogen, used as fuel in a fuel cell stack, is used as a coolant for cooling a motor of the hydrogen recirculation blower. 
   
   
       2 . The apparatus of  claim 1 , comprising:
 a blower housing including an inlet and an outlet for hydrogen recirculation provided in a front part thereof, and an impeller and a motor for driving the hydrogen recirculation blower provided therein;   a cooling passage, through which hydrogen is supplied to the blower housing to provide heat exchange, provided to the blower housing; and   a hydrogen supply line, through which hydrogen is supplied to the cooling passage to cool the motor, branched from a hydrogen supply pipe and connected to the blower housing.   
   
   
       3 . The apparatus of  claim 2 , wherein a heat insulating plate is provided on the inner wall of the blower housing so as to divide the blower housing into an impeller portion and a motor portion. 
   
   
       4 . The apparatus of  claim 2 , wherein the cooling passage is disposed on the outer surface of the blower housing in order to cool the motor heated by rotation of the impeller, and cooling fins are provided inside the cooling passage such that the hydrogen supplied to the cooling passage cools the cooling fins heated by the heat generated from the motor. 
   
   
       5 . The apparatus of  claim 4 , wherein a heat insulating plate is provided on the inner wall of the blower housing so as to divide the blower housing into an impeller portion and a motor portion.