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US 12,018,693 B2Granted
Method and system for compressor operating range extension via active valve control
AssigneeCarrier Corporation
InventorsVishnu M. Sishtla, William T. Cousins
Life of this patent
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Abstract
An exemplary compressor system includes a compressor having a fluid inlet and a fluid outlet. An isolation valve connects the fluid outlet of the compressor to a condenser. A controller is communicatively coupled to the isolation valve and the compressor. The controller includes a memory storing instructions configured to cause the controller to detect one of a surge event and a surge event precursor and restrict an opening in the isolation valve in response.
Claims18
A method for extending an operating range of a compressor system comprising:
- detecting one of a surge event and a surge event precursor, and restricting flow exiting a compressor prior to entering into a condenser in response;
- and
- wherein
- in response to detection of one of the surge event and the surge event precursor, the method includes restricting flow exiting the compressor to increase a load seen by the compressor without altering a volume of the condenser by restricting a flow rate into the condenser, and/or
- an operating point of the compressor system refers to a current temperature and load of a compressor output, and including adjusting a state of an actively controlled valve according to a feedback loop to maintain the operating point immediately below a surge line, while not allowing the operating point to cross above the surge line.
2 more elements
A compressor system comprising:
- a compressor including a fluid inlet and a fluid outlet;
- an isolation valve connecting the fluid outlet of the compressor to a condenser;
- a controller communicatively coupled to the isolation valve and the compressor, the controller including a memory storing instructions configured to cause the controller to detect one of a surge event and a surge event precursor and restrict an opening in the isolation valve in response;
- and
- wherein an operating point of the compressor system refers to a current temperature and load of a compressor output, and wherein the controller includes a feedback control loop that is utilized to maintain the operating point immediately below a surge line, while not allowing the operating point to cross above the surge line.
2 more elements
A compressor system comprising:
- a compressor including a fluid inlet and a fluid outlet:
- an isolation valve connecting the fluid outlet of the compressor to a condenser;
- and
- a controller communicatively coupled to the isolation valve and the compressor, the controller including a memory storing instructions configured to cause the controller to detect one of a surge event and a surge event precursor and restrict an opening in the isolation valve in response, wherein flow exiting the compressor is restricted prior to entering into the condenser when one of the surge event and the surge event precursor is detected, and wherein restricting the flow exiting the compressor increases a load seen by the compressor without altering a volume of the condenser.
1 more element
Dependencies are inferred from the claim text.