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. 19, 2005
Filed:
Sep. 09, 2003
Kazuo Nakatani, Osaka, JP;
Yoshikazu Kawabe, Shiga, JP;
Yuji Inoue, Shiga, JP;
Noriho Okaza, Shiga, JP;
Akira Hiwata, Kyoto, JP;
Kazuo Nakatani, Osaka, JP;
Yoshikazu Kawabe, Shiga, JP;
Yuji Inoue, Shiga, JP;
Noriho Okaza, Shiga, JP;
Akira Hiwata, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
It is an object of the present invention to reduce the constraint that the density ratio is constant as small as possible, and to obtain high power recovering effect in a wide operation range. A refrigeration cycle apparatus uses carbon dioxide as refrigerant and has a compressor, an outdoor heat exchanger, an expander and an indoor heat exchanger. An injection circuit for introducing high pressure refrigerant is provided in a halfway of an expansion process of said expander.