Back to back bearing sealing systems
AssigneeJohnson Controls Technology Company
InventorPaul W. Snell
Life of this patent
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Abstract
Embodiments of the present disclosure are directed toward a sealing system for a motor that includes a first sealing element configured to be circumferentially disposed around a rotor shaft of the motor. The sealing system also includes a second sealing element configured to be circumferentially disposed around the rotor shaft. A sealing tip of the first sealing element is configured to lift from a surface of the rotor shaft in response to a pressurized fluid directed between the first sealing element and the second sealing element. Additionally, the first sealing element and the second sealing element are configured to radially float around the rotor shaft.
Claims20
A sealing system for a motor, comprising:
- a first sealing element configured to be circumferentially disposed around a rotor shaft of the motor;
- a second sealing element configured to be circumferentially disposed around the rotor shaft, wherein a sealing tip of the first sealing element is configured to lift from a surface of the rotor shaft in response to a pressurized fluid directed between the first sealing element and the second sealing element, and wherein the first sealing element and the second sealing element are configured to radially float around the rotor shaft;
- and
- a spring coupled axially between the first sealing element and the second sealing element, wherein the spring is configured to bias the first sealing element against a first inner housing wall of the motor and to bias the second sealing element against a second inner housing wall of the motor, opposite of the first inner housing wall.
A sealing system for a motor of a compressor, comprising:
- a first sealing element configured to be circumferentially disposed around a rotor shaft of the motor within an annular chamber of a motor housing;
- a second sealing element configured to be circumferentially disposed around the rotor shaft within the annular chamber, wherein the first sealing element and the second sealing element are configured to radially float around the rotor shaft;
- and
- a spring element disposed axially between the first sealing element and the second sealing element, wherein the spring element is configured to bias the first sealing element against a first wall of the annular chamber to adjust an axial position of the first sealing element and the second sealing element within the annular chamber.
A motor for a compressor, comprising:
- a housing;
- a rotor shaft extending within the housing;
- a first sealing element circumferentially disposed around the rotor shaft;
- a second sealing element comprising a labyrinth seal circumferentially disposed around the rotor shaft, wherein a sealing tip of the first sealing element is configured to lift from a surface of the rotor shaft in response to a pressurized fluid directed between the first sealing element and the second sealing element, and wherein the labyrinth seal is configured to enable the first sealing element and the second sealing element to radially float around the rotor shaft;
- and
- a spring element disposed axially between the first sealing element and the second sealing element, wherein the spring element is configured to bias the first sealing element against a first wall of an annular chamber of the housing to adjust an axial position of the first sealing element and the second sealing element within the annular chamber.
Dependencies are inferred from the claim text.