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:
Jan. 17, 2017
Filed:
Feb. 23, 2012
Takeshi Ogata, Osaka, JP;
Yu Shiotani, Osaka, JP;
Akira Hiwata, Shiga, JP;
Hiroshi Hasegawa, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Yu Shiotani, Osaka, JP;
Akira Hiwata, Shiga, JP;
Hiroshi Hasegawa, Osaka, JP;
Abstract
A rotary compressor () includes a compression mechanism (), a motor (), a suction path (), a back-pressure chamber (), a return path (), an inverter (), and a controller (). A check valve () of a reed valve type for opening and closing a return port () of the compression mechanism () is disposed in the back-pressure chamber (). The return path () functions to return a working fluid to the suction path () from the back-pressure chamber (). A volume-varying valve () is provided in the return path (). The volume-varying valve () allows the working fluid to flow through the return path () when the suction volume of the compression mechanism () should be set relatively small, and precludes the working fluid from flowing through the return path () to increase the pressure in the back-pressure chamber () when the suction volume of the compression mechanism () should be set relatively large.