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:
Jul. 19, 2016
Filed:
Sep. 01, 2011
Yusuke Shimazu, Tokyo, JP;
Keisuke Takayama, Tokyo, JP;
Masayuki Kakuda, Tokyo, JP;
Hideaki Nagata, Tokyo, JP;
Takeshi Hatomura, Tokyo, JP;
Yusuke Shimazu, Tokyo, JP;
Keisuke Takayama, Tokyo, JP;
Masayuki Kakuda, Tokyo, JP;
Hideaki Nagata, Tokyo, JP;
Takeshi Hatomura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In a refrigeration cycle device, a design volume ratio, obtained by dividing a stroke volume of a sub-compressor by a stroke volume of an expander, is set to be smaller than (DE/DC)×(hE−hF)/(hB−hA). With an operating efficiency being the maximum in an operating range allowed to be set of the refrigeration cycle device, DE is a density of a refrigerant, which has flowed out from a radiator, DC is a density of the refrigerant, which has flowed out from an evaporator, hE is a specific enthalpy of the refrigerant flowing into the expander, hF is a specific enthalpy of the refrigerant, which has flowed out from the expander, hA is a specific enthalpy of the refrigerant sucked by a main compressor, and hB is a specific enthalpy of the refrigerant at an intermediate position of a compression process of the main compressor.