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:
May. 08, 2012
Filed:
Aug. 30, 2007
Toshiyuki Kurihara, Sakai, JP;
Shinichi Kasahara, Sakai, JP;
Toshiyuki Kurihara, Sakai, JP;
Shinichi Kasahara, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A refrigeration device includes a compression mechanism, a radiator, a first expansion mechanism (), a liquid receiver (), a second expansion mechanism, an evaporator, a temperature detector, a first pressure storing unit (), and a second pressure determining unit, a pressure detector, and a control unit (). The first pressure storing unit stores an upper limit and lower limit of an intermediate pressure. The second pressure determining unit determines an upper limit and lower limit of a high pressure based on the upper limit and lower limit of the intermediate pressure and on a temperature in a vicinity of an exit of the radiator. The control unit controls the first expansion mechanism and the second expansion mechanism so that a pressure detected by the pressure detector will be equal to or less than the upper limit and equal to or greater than the lower limit of the high pressure.