Motor driven centrifugal compressor/blower
AssigneeR & D Dynamics Corporation
InventorsGiridhari L. Agrawal, Charles W. Buckley
Life of this patent
Estimating the term…
Abstract
This invention provides a small, high efficiency, oil free motor driven compressor/blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other contaminant-intolerant applications. The motor driven compressor/blower rotor assembly is supported by foil air bearings and rotates at high speed by using a high frequency drive. The impeller is a centrifugal type design. The MDC can be easily integrated into the air management system of a fuel cell.
Claims2
A motor driven compressor for compressing a gaseous medium comprising:
- a compressor housing;
- a rotating assembly mounted for rotation about an axis within the housing, and having;
- a) an impeller forming part of a compressor stage within the housing;
- b) a motor rotor forming an armature of a motor for driving the rotating assembly about the axis;
- c) two journal bearing shafts disposed along the axis at opposite sides of the motor rotor;
- and
- d) a tie rod extending along the axis of rotation and holding the impeller, the motor rotor and the two journal bearing shafts under preload.
Dependencies are inferred from the claim text.