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. 31, 2012
Filed:
Aug. 21, 2007
Hiroshi Hasegawa, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Masaru Matsui, Kyoto, JP;
Atsuo Okaichi, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yasufumi Takahashi, Osaka, JP;
Hiroshi Hasegawa, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Masaru Matsui, Kyoto, JP;
Atsuo Okaichi, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yasufumi Takahashi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An expander-integrated compressor (A) has a compression mechanism () for compressing a refrigerant and an expansion mechanism () for expanding the refrigerant. The compression mechanism () is located above the expansion mechanism () inside a closed casing () and shares a rotating shaft () with the expansion mechanism (). An oil pump () is provided at the lower end of the rotating shaft (). The oil pump () is immersed in oil in an oil reservoir (). Usually, the oil is placed in the oil reservoir () in such a manner that the oil level (OL) is located above a lower end portion () of a vane () of a first expansion section (). More preferably, the oil is placed in such a manner that the expansion mechanism () is immersed in the oil. An oil supply passage () for guiding the oil to the compression mechanism () is formed inside the rotating shaft (). A suction port () of the oil pump () is provided below the lower end portion () of the vane ().