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:
Sep. 08, 2009
Filed:
Apr. 15, 2008
Takahiro Nishikawa, Ota, JP;
Hirotsugu Ogasawara, Ota, JP;
Akihiro Suda, Gunma-ken, JP;
Masayuki Hara, Gunma-ken, JP;
Hiroyuki Sawabe, Ota, JP;
Hiroyuki Yoshida, Gunma-ken, JP;
Akira Hashimoto, Ota, JP;
Takahiro Nishikawa, Ota, JP;
Hirotsugu Ogasawara, Ota, JP;
Akihiro Suda, Gunma-ken, JP;
Masayuki Hara, Gunma-ken, JP;
Hiroyuki Sawabe, Ota, JP;
Hiroyuki Yoshida, Gunma-ken, JP;
Akira Hashimoto, Ota, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
An object is to avoid generation of a collision sound of a second vane of a compression system comprising a multicylinder rotary compressor being configured to be used by switching of a first operation mode in which both rotary compression elements perform a compression work and a the second operation mode in which the only first rotary compression element substantially performs the compression work. When the second operation mode is switched to the first operation mode, discharge-side pressures of both the rotary compression elements are applied as a back pressure of the second vane, and thereafter an intermediate pressure is applied which is between suction-side and discharge-side pressures of both the rotary compression elements. When the first operation mode is switched to the second operation mode, a valve device interrupts flowing of a refrigerant into a second cylinder, and thereafter suction-side pressures of both the rotary compression elements are applied as the back pressure of the second vane.