Refrigerant compressor magnetic bearing
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United States of America Patent
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-
Apr 18, 2017
Grant Date -
Feb 14, 2013
app pub date -
Jul 28, 2010
filing date -
Jul 28, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A magnetic bearing assembly includes a lamination stack with coil apertures extending between opposing sides. A continuous unitary insulation layer is overmolded onto the opposing sides and within the coil apertures providing a coil aperture lining. The insulation layer includes a wall within the coil aperture adjoining coil aperture lining and bisecting the coil aperture into first and second openings. A coil portion is disposed in each of the first and second openings and electrically isolated from one another by the wall. The magnetic bearing assembly is arranged in a refrigerant compressor that includes an electric motor rotationally configured to rotationally drive an impeller via a shaft. A controller is in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft.
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