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. 04, 2007
Filed:
Sep. 07, 2005
Shoichiro Usui, Numazu, JP;
Tadahiro Goto, Fuji, JP;
Shoichiro Usui, Numazu, JP;
Tadahiro Goto, Fuji, JP;
Abstract
A fin structure, a heat-transfer tube and a heat exchanger are formed of plate fins housed in a heat-transfer tube and have an excellent cooling efficiency by making the distribution and flow velocity of a flow uniform and by promoting an efficient heat-exchanging action. The fin structure includes plate fins housed in a heat-transfer tube and having a square section and a free shape in the longitudinal direction for dividing a passage for a fluid composed of a cooled medium or a cooling medium to flow in the heat-transfer tube, into a plurality of small passages. In the fin structure, notches, through holes, raised portions, ridges and/or troughs are formed in the sides or the upper or lower walls of the plate fins. The heat-transfer tube has the fin structure housed therein. The heat exchanger has the heat-transfer tube assembled therein.