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:
Apr. 05, 2011
Filed:
Nov. 27, 2006
Shuuji Fujimoto, Osaka, JP;
Atsushi Yoshimi, Osaka, JP;
Shuuji Fujimoto, Osaka, JP;
Atsushi Yoshimi, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A refrigerant circuit () is provided with a low-pressure stage oil separator () for separating refrigerating machine oil out of refrigerant discharged from a low-pressure stage compressor () and returning it to the suction side of the low-pressure stage compressor (), and a high-pressure stage oil separator () for separating refrigerating machine oil out of refrigerant discharged from a high-pressure stage compressor () and returning it to the suction side of the high-pressure stage compressor (). The efficiency of oil separation of the low-pressure stage oil separator () is set lower than that of the high-pressure stage oil separator ().