Compressor Surge Detection
AssigneeCarrier Corporation
InventorVishnu M. Sishtla
Life of this patent
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Abstract
A compressor (22) has a housing assembly (50) with a suction port (24) and a discharge port (26). A shaft (70) is mounted for rotation about an axis (500) and an impeller (44) is mounted to the shaft to be driven in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. A magnetic bearing system (66, 67, 68) supports the shaft. A controller (84) is coupled to a sensor (80, 82) and configured to detect at least one of surge and pre-surge rotating stall and, responsive to said detection, take action to prevent or counter surge.
Claims21
A compressor (22) comprising:
- a housing assembly (50) having a suction port (24) and a discharge port (26);
- a shaft (70) mounted for rotation about an axis (500);
- an impeller (44) mounted to the shaft to be driven in at least a first condition so as to draw fluid in through the suction port and discharge said fluid out from the discharge port;
- a magnetic bearing system (66, 67, 68) supporting the shaft;
- a sensor (80, 82);
- and
- a controller (84) coupled to the sensor and configured to detect at least one of surge and pre-surge rotating stall and, responsive to said detection, take action to prevent or counter surge, wherein:
- the action comprises adjusting the clearance between the impeller and a shroud.
(canceled)
Dependencies are inferred from the claim text.