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. 30, 2017
Filed:
Nov. 27, 2008
Applicant:
Sangmu Lee, Tokyo, JP;
Inventor:
Sangmu Lee, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 1/00 (2006.01); F28F 1/40 (2006.01); B21D 53/08 (2006.01); F25B 39/00 (2006.01); F28F 1/32 (2006.01); F28F 1/42 (2006.01); F28F 1/10 (2006.01);
U.S. Cl.
CPC ...
F28F 1/40 (2013.01); B21D 53/08 (2013.01); F25B 39/00 (2013.01); F28F 1/10 (2013.01); F28F 1/32 (2013.01); F28F 1/42 (2013.01); F28F 1/422 (2013.01); F25B 2500/01 (2013.01);
Abstract
A heat exchanger is constituted by an indoor machine equipped with an indoor heat exchanger constituted by a plurality of heat transfer tubes, which have spiral grooves formed with a predetermined lead angle on inner faces of the tubes and are made to pierce a plurality of fins, and an outdoor machine equipped with an outdoor heat exchanger constituted by a plurality of heat transfer tubes which have a lead angle of spiral grooves smaller than that of a heat transfer tubes used for the indoor heat exchanger and are made to pierce a plurality of fins.