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. 07, 2023
Filed:
Mar. 01, 2022
Daikin Industries, Ltd., Osaka, JP;
Masaaki Takegami, Osaka, JP;
Shuichi Taguchi, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A heat source-side unit () includes a heat source-side circuit (). The heat source-side circuit () includes a compression unit () including a lower-stage compression element () and a higher-stage compression element (), an intermediate heat exchanger () disposed on a refrigerant path between the lower-stage compression element () and the higher-stage compression element (), and a bypass passage () connected to a suction pipe () and a discharge pipe () each connected to the lower-stage compression element (). At startup of the compression unit (), a first action is performed for stopping the lower-stage compression element () and operating the higher-stage compression element (). This configuration thus suppresses occurrence of liquid compression at startup of a compressor.