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:
Dec. 04, 2007
Filed:
Mar. 27, 2003
Yuuichi Yakumaru, Osaka, JP;
Masami Funakura, Osaka, JP;
Fumitoshi Nishiwaki, Hyogo, JP;
Noriho Okaza, Shiga, JP;
Yuuichi Yakumaru, Osaka, JP;
Masami Funakura, Osaka, JP;
Fumitoshi Nishiwaki, Hyogo, JP;
Noriho Okaza, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a refrigerating cycle device using carbon dioxide as a refrigerant, there exists a problem that the provision of a receiver at a low-pressure side increases cost and volume due to a pressure resistance design necessary for ensuring safety. By adjusting a refrigerant holding quantity of a first heat exchanger in such a manner that a refrigerant pressure of the first heat exchangeris changed by operating a first decompressorand a second decompressor, an imbalance of a refrigerant quantity between time for space cooling and time for heating or dehumidifying can be alleviated and hence, it is possible to perform an operation of the refrigerating cycle device with high efficiency with a miniaturized receiver or without providing the receiver.