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:
Aug. 15, 2023
Filed:
Mar. 23, 2018
Carrier Corporation, Palm Beach Gardens, FL (US);
Haiping Ding, Shanghai, CN;
Shaojuan Si, Shanghai, CN;
Xiangyuan Zhang, Shanghai, CN;
Michael A. Stark, Mooresville, NC (US);
CARRIER CORPORATION, Palm Beach Gardens, FL (US);
Abstract
A multi-stage refrigeration system () includes: a refrigeration loop (), which includes a gas suction port of a multi-stage compressor (), a condenser (), a first throttling element (), an evaporator () and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (), which includes an economizer (), a second throttling element () and a first control valve (), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve () is arranged.