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:
Mar. 24, 2015
Filed:
Jul. 07, 2011
Hiroaki Nakai, Shiga, JP;
Hirofumi Yoshida, Shiga, JP;
Tsuyoshi Karino, Shiga, JP;
Ryuichi Ohno, Shiga, JP;
Shingo Oyagi, Kyoto, JP;
Noboru Iida, Shiga, JP;
Hiroaki Nakai, Shiga, JP;
Hirofumi Yoshida, Shiga, JP;
Tsuyoshi Karino, Shiga, JP;
Ryuichi Ohno, Shiga, JP;
Shingo Oyagi, Kyoto, JP;
Noboru Iida, Shiga, JP;
Abstract
A scroll compressor employs therein a refrigerant having a small global warming potential and a small ozone depletion potential and mainly comprising hydrofluoroolefin having a carbon-carbon double bond. A stationary scroll has and end plate and a discharge port defined in the end plate at a central portion thereof so as to open into a discharge chamber. The stationary scroll also has a bypass hole defined in the end plate to allow a plurality of compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port. A check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge chamber. This construction can restrain a baneful influence on the global environment, reduce a temperature increase caused by excessive compression, and restrain decomposition of the refrigerant even in long-term use.