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. 10, 2017
Filed:
Mar. 11, 2010
Takashi Ikeda, Tokyo, JP;
Tomotaka Ishikawa, Tokyo, JP;
Hiroshi Sata, Tokyo, JP;
Fumitake Unezaki, Tokyo, JP;
Takashi Ikeda, Tokyo, JP;
Tomotaka Ishikawa, Tokyo, JP;
Hiroshi Sata, Tokyo, JP;
Fumitake Unezaki, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-ku, Tokyo, JP;
Abstract
A refrigerating device that forms a refrigerating cycle in which a plurality of outdoor machinesandprovided at least with compressorsand, condensersand, and accumulatorsandrespectively and an indoor machineprovided with decompressing meansand an evaporatorare connected in parallel by piping, having oil return pipesandthat return refrigerator oil stored in the accumulators into the compressors, an oil equalizing pipethat connects the accumulators to each other, and a controllerthat controls an operation of the compressor and on/off of an electromagnetic valvedeposed on the oil equalizing pipe.