US Patent No. 10,335,906

COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD


Patent No. 10,335,906
Issue Date July 02, 2019
Title Compressor Diagnostic And Protection System And Method
Inventorship Hung M. Pham, Dayton, OH (US)
Assignee Emerson Climate Technologies, Inc., Sidney, OH (US)

Claim of US Patent No. 10,335,906

1. A system comprising:a compressor operable in a refrigeration circuit;
a first sensor detecting first data indicative of an operating condition of a high-pressure side of the refrigeration circuit;
a second sensor detecting second data indicative of an operating condition of a low-pressure side of the refrigeration circuit;
processing circuitry configured to: (i) receive the first data and the second data, (ii) determine a fault based on at least one of the first data and the second data, (iii) categorize the fault as one of a mild low-side fault, a severe low-side fault, a mild high-side fault, and a severe high-side fault based on the first data and the second data, (iv) operate the compressor in a limp-along mode by at least one of restricting power to the compressor and reducing a capacity of the compressor in response to categorizing the fault as one of the mild high-side fault and the mild low-side fault, and (v) shutting down the compressor in response to categorizing the fault as one of the severe high-side fault and the severe low-side fault.