Rotary compressor with permanent magnet motor

Details Rotary compressor with permanent magnet motor Rotary compressor with permanent magnet motor

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 15/00 (2006.01)

Patent

CA 2545360

A rotary compressor comprising a rotor having a plurality of permanent magnets mounted thereon and a stator, where the rotor is aligned with respect to the stator via a magnetic attraction between the permanent magnets and the stator. The compressor includes a housing and is configured such that the rotor does not entirely bear against a top or bottom portion of the compressor housing. The permanent magnets of the rotor are sized and configured such that the magnetic attraction between the magnets and the stator, regardless of whether the stator is energized, positions, or suspends, the rotor substantially intermediate the top and bottom portions of the housing. As a result, less or, possibly, even no friction is experienced between the rotor and the compressor housing which reduces the potential for the rotor to seize or stall and allows the compressor to be operated with little or no oil.

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