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. 16, 2008
Filed:
Oct. 04, 2005
Bong-soo Park, Seoul, KR;
Sai-kee OH, Gyeonggi-Do, KR;
Chi-woo Song, Incheon, KR;
Song Choi, Seoul, KR;
Baik-young Chung, Incheon, KR;
Se-dong Chang, Gyeonggi-Do, KR;
Bong-Soo Park, Seoul, KR;
Sai-Kee Oh, Gyeonggi-Do, KR;
Chi-Woo Song, Incheon, KR;
Song Choi, Seoul, KR;
Baik-Young Chung, Incheon, KR;
Se-Dong Chang, Gyeonggi-Do, KR;
LG Electronics Inc., Seoul, KR;
Abstract
An air-conditioner having a dual-refrigerant cycle includes a primary refrigerant circuit heat-exchanged with outdoor air; a secondary refrigerant circuit heat-exchanged with indoor air to perform either a cooling operation or a heating operation; and a heat exchange unit disposed between the primary refrigerant circuit and the secondary refrigerant circuit to perform heat exchange therebetween, wherein the secondary refrigerant circuit includes a compressor for compressing a refrigerant circulating in the secondary refrigerant circuit. A condensing pressure of the primary refrigerant circuit is lowered during the hating operation and an evaporation pressure of the primary refrigerant circuit is increased to thereby enhance efficiency of the air-conditioner.