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. 10, 2021
Filed:
May. 04, 2017
Carrier Corporation, Farmington, CT (US);
Weijuan Wang, Shanghai, CN;
Yilin Zhang, Shanghai, CN;
CARRIER CORPORATION, Palm Beach Gardens, FL (US);
Abstract
A heat pump system and a control method thereof. The heat pump system includes: a major heat exchange loop (), including at least one compressor (), a flow-path switching valve (), a condenser (), a first throttling element (), an economizer (), and an evaporator () that are connected sequentially to form a loop; and an air supply branch (), which is connected from a flow path between the first throttling element and the economizer to an air supply inlet of the compressor, the air supply branch being provided with a switch valve () for preventing a gas-phase refrigerant from flowing back; where a pressure balance branch () is further included, which is connected from the air supply branch at the upstream of the switch valve to a low-pressure gas-phase refrigerant side of the major heat exchange loop.