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. 25, 2004
Filed:
Aug. 30, 2001
Koichi Kita, Osaka, JP;
Ryuzaburo Yajima, Osaka, JP;
Abstract
A refrigerant circuit ( ) is formed by connecting, in series and in the order given, a compressor ( ), a four-way selector valve ( ), an outdoor heat exchanger ( ), an expansion valve ( ), and an indoor heat exchanger ( ) by a gas side pipe ( ) and a liquid side pipe ( ). The refrigerant circuit ( ) is charged with an R32 single refrigerant or with an R32/R125 mixed refrigerant in which R32 is present in an amount of not less than 75 wt. %. A dg/dl ratio, which is the ratio of the inside diameter dg of the gas side pipe ( ) to the inside diameter dl of the liquid side pipe ( ), is so set as to fall in the range of 2.1 to 3.5 when the cooling rated capacity is more than 5 kW but not more than 9 kW whereas when the cooling rated capacity is not more than 5 kW or more than 9 kW the dg/dl ratio is so set as to fall in the range of 2.6 to 3.5.