Patent ID: 8702404
Filing Date: 2014-04-22
Classification: F04D

Abstract:
1. An air blower for a fuel cell vehicle, comprising: a volute case; an impeller equipped in the volute case to compress air; a motor case connected to the volute case and having a motor receiving part formed therein; a motor provided in the motor case, wherein the motor comprises: a first air flowing part and a second air flowing part in a motor case contacting the first bearing and the supporting member contacting the second bearing to flow air along the rotational shaft, wherein the first air flowing part and the second air flowing part each include a first air flowing groove concavely formed in the motor case and a second air flowing groove concavely formed in the supporting member, the first air flowing groove is formed along a circumference of the first bearing, and the second air flowing groove is formed along a circumference of the second bearing; and a cooling water passage communicated along the circumference of the motor in the motor case and having cooling water flowing therein, wherein the cooling water passage is a pipe connected in a spiral shape along the circumference of the motor receiving part, and wherein the cap comprises a hollow communicating hole, and air compressed by the impeller is configured to be discharged to an outside of the air blower through the first air flowing groove, an area between the rotator and the stator, and the second air flowing groove and the communicating hole.