Patent ID: 8215928

Claim:
A blower for processing a gas, comprising: (a) a blower hot side, including: a volute with a process gas inlet and a process gas outlet, a diffuser attached to the volute for directing the flow of the process gas through the volute, and an impeller mounted for rotation about a central longitudinal axis within the volute for processing the gas as it flows through the volute; (b) a blower cold side, including: a sealed motor housing defining an interior cavity, a rotating assembly disposed within the interior cavity of the motor housing, comprising: a rotating shaft mounted for rotation about the central longitudinal axis, and a motor rotor mounted on the rotating assembly for rotation with the rotating shaft, wherein the impeller is mounted at an end of the rotating assembly for rotation therewith; and a motor stator assembly mounted in stationary relationship within the motor housing relative to the rotor; (c) a thermal barrier positioned between the blower hot side and the blower cold side for reducing heat transfer from the blower hot side to the blower cold side; and a radiation heat shield positioned against the exterior surface of the volute adjacent to the thermal barrier for reflecting heat radiated from the blower hot side.