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. 21, 2012
Filed:
Mar. 05, 2007
Katsumi Sakitani, Osaka, JP;
Masakazu Okamoto, Osaka, JP;
Eiji Kumakura, Osaka, JP;
Tetsuya Okamoto, Osaka, JP;
Katsumi Sakitani, Osaka, JP;
Masakazu Okamoto, Osaka, JP;
Eiji Kumakura, Osaka, JP;
Tetsuya Okamoto, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
In a compression/expansion unit () serving as a fluid machine, both of a compression mechanism () and an expansion mechanism () are contained in a single casing (). A shaft () coupling the compression mechanism () to the expansion mechanism () has an oil feeding channel () formed therein. Refrigerating machine oil accumulated at the bottom of the casing () is sucked up into the oil feeding channel () and fed to the compression mechanism () and the expansion mechanism (). The refrigerating machine oil fed to the expansion mechanism () is discharged from the expansion mechanism () together with the refrigerant after expansion, flows through the refrigerant circuit and then flows back to the compression mechanism () in the compression/expansion unit ().