Invention Grant
- Patent Title: Systems and methods for multi-stage operation of a compressor
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Application No.: US16987574Application Date: 2020-08-07
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Publication No.: US11131491B1Publication Date: 2021-09-28
- Inventor: Kashmira Patel , Charles E. Green , John F. Broker
- Applicant: Emerson Climate Technologies, Inc.
- Applicant Address: US OH Sidney
- Assignee: Emerson Climate Technologies, Inc.
- Current Assignee: Emerson Climate Technologies, Inc.
- Current Assignee Address: US OH Sidney
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: F25B49/02
- IPC: F25B49/02 ; F25B31/02 ; F25B41/20 ; F25B41/30

Abstract:
A system for controlling a capacity of a compressor includes a motor of the compressor including a main winding connected at a connection point to an auxiliary winding and a drive configured to control a speed of the motor. The system includes a first switch configured to selectively connect the main winding to either a first line voltage or a first output of the drive, a second switch configured to selectively connect the connection point to either a second line voltage or a second output of the drive, and a third switch configured to selectively connect the auxiliary winding to either a capacitor or a third output of the drive. The system includes a solenoid valve configured to selectively either operate in a first capacity or a second capacity. The system includes a control module configured to control the drive, the first switch, the second switch, and the third switch.
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