The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 2021
Filed:
Aug. 09, 2017
Carrier Corporation, Palm Beach Gardens, FL (US);
Vishnu M. Sishtla, Manlius, NY (US);
Scott A. Nieforth, Clay, NY (US);
Carrier Corporation, Palm Beach Gardens, FL (US);
Abstract
A vapor compression system () has: a compressor () having a suction port () and a discharge port (); a heat rejection heat exchanger () coupled to the discharge port to receive compressed refrigerant; a heat absorption heat exchanger (); a first lubricant flowpath () from the heat rejection heat exchanger to the compressor; a second lubricant flowpath () from the heat absorption heat exchanger to the compressor; at least one lubricant pump (); at least one liquid level sensor (); and a controller () configured to control lubricant flow along the first lubricant flowpath and the second lubricant flowpath based on output of the at least one liquid level sensor.