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. 02, 2013
Filed:
Apr. 14, 2009
Takeshi Ogata, Osaka, JP;
Hiroshi Hasegawa, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yu Shiotani, Osaka, JP;
Subaru Matsumoto, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Hiroshi Hasegawa, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yu Shiotani, Osaka, JP;
Subaru Matsumoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
There may be a case where, by simply coupling the first compressor (expander compressor unit) and the second compressor with an oil-equalizing pipe, the first compressor is not lubricated sufficiently, thereby decreasing reliability. The volumetric capacity (V) of the first available oil space () of the first compressor () is set larger than the volumetric capacity (V) of the second available oil space () of the second compressor (). With this configuration, even if the oil level (S) of the first oil sump () decreases in transition to a state of steady operation, it is possible to maintain a sufficient amount of oil in the first compressor (), and thus high reliability as a fluid machine can be achieved.