REFRIGERANT GAS COOLING OF MOTOR AND MAGNETIC BEARINGS

    公开(公告)号:US20190063461A1

    公开(公告)日:2019-02-28

    申请号:US15873560

    申请日:2018-01-17

    Abstract: A variable orifice flow device controls the flow of refrigerant into a compressor motor housing in a compressor. The variable orifice flow device may include, for example, an electronic expansion valve, a thermal expansion valve, or a shuttling valve controlling the flow of refrigerant into a compressor motor housing. One or more flows of refrigerant may be through a fixed orifice, a valve seat of the variable orifice flow device, or leakage through a seal of the compressor motor housing, providing a baseline refrigerant flow to the inside of the compressor motor housing in addition to the flow through the variable orifice flow device.

    COMPRESSSOR DRIVESHAFT MAGNETIC SUPPORT

    公开(公告)号:US20250027503A1

    公开(公告)日:2025-01-23

    申请号:US18356916

    申请日:2023-07-21

    Abstract: A compressor includes a driveshaft, a bearingless motor, one or more magnetic bearings, and a controller for the bearingless motor. The bearingless motor configured to rotate the driveshaft to compress a working fluid. The one or more magnetic bearings magnetically support the driveshaft when rotating. The controller is configured to adjust magnetic support provided by the bearingless motor to the driveshaft based on operation of the compressor. A method of operating a compressor includes rotating, with a bearingless motor, a driveshaft to compress a working fluid and magnetically supporting, with one or more magnetic bearings, the driveshaft. The method also includes magnetically supporting, with the bearingless motor, the driveshaft in which the magnetic support provided by the bearingless motor is adjusted based on operation of the compressor.

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