Magnetic bearing cooling management
AssigneeCarrier Corporation
InventorsScott A. Nieforth, Vishnu Sishtla
Life of this patent
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Abstract
A shield for controlling the cooling within a hermetically cooled motor, and a compressor incorporating the shield are provided. The shield includes an insulator, at least one fastener, and a venting aperture. The insulator restricts the flow of a working fluid between a first side and a second side. The at least one fastener secures the insulator. The venting aperture controls a pressure differential between the first side and the second side. The venting aperture may include at least one hole through the insulator. The venting aperture may be provided as a hole through the insulator for the rotating shaft of the compressor.
Claims18
A shield for controlling the cooling within a hermetically cooled motor, the shield comprising:
- an insulator surface comprising a first side and a second side, the insulator surface configured to restrict the flow of a working fluid;
- at least one fastener aperture disposed in the insulator surface;
- and
- at least one venting aperture disposed in the insulator surface, the at least one venting aperture configured to control a pressure differential between the first side and the second side.
A compressor comprising:
- an electric motor for driving a rotating shaft;
- a magnetic bearing disposed adjacent to the electric motor,
- a shield disposed between the electric motor and the magnetic bearing, the shield comprising:
- an insulator surface configured to restrict the flow of a working fluid;
- at least one fastener aperture disposed in the insulator surface;
- and
- at least one venting aperture disposed in the insulator surface, the at least one venting aperture configured to control a pressure differential between the first side and the second side.
Dependencies are inferred from the claim text.