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.

Abstract: The present invention provides a hydrogen recirculation apparatus for a fuel cell vehicle, a fuel tank storing hydrogen, a high-pressure regulator for regulating pressure of hydrogen, a low-pressure regulator for regulating pressure of hydrogen, and a solenoid valve for opening/closing a passage from the fuel tank to the pressure regulators are provided, the apparatus comprising: a fuel cell stack having an inlet and an outlet; a hydrogen recirculation blower; a hydrogen recirculation line connecting the outlet of the fuel cell stack and the hydrogen recirculation blower for recirculating residual hydrogen discharged from the outlet of the fuel cell; a water separator provided in the hydrogen recirculation line at a position between the hydrogen recirculation blower and the outlet of the fuel cell stack, the water separator serving to separate condensed water generated in the hydrogen recirculation line; and a humidifier/heat exchanger for humidifying and heat-exchanging dry hydrogen flowing through the low-p