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:
Oct. 17, 2023
Filed:
Dec. 29, 2022
Daikin Industries, Ltd., Osaka, JP;
Masaaki Takegami, Osaka, JP;
Shuichi Taguchi, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A refrigerant circuit (), in which carbon dioxide circulates as a refrigerant, includes a plurality of heat exchangers (), a receiver (), a degassing passage (), and a degassing valve (). The refrigeration system implements a first operation during which one of the plurality of heat exchangers () functions as a radiator while two of the plurality of heat exchangers () function as evaporators, and the refrigerant flows from the heat exchanger () functioning as a radiator into the receiver () and then flows from the receiver () into each of the two heat exchangers () functioning as evaporators. The control unit () changes the degassing valve () from a closed state to an open state when a pressure (RP) in the receiver () exceeds a first pressure (Pth) set in advance, in the first operation.