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:
Oct. 09, 2001
Filed:
Mar. 01, 2000
Applicant:
Inventors:
Takao Fukatami, Aizuwakamatsu, JP;
Tetsuya Furuuchi, Aizuwakamatsu, JP;
Shin Kikuchi, Aizuwakamatsu, JP;
Shunroku Sukumoda, Aizuwakamatsu, JP;
Assignee:
Mitsubishi Shindoh Co. Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F 1/40 ;
U.S. Cl.
CPC ...
F28F 1/40 ;
Abstract
With a grooved-inner-surface heat transfer tube, an inner circumferential surface of a metal tube is formed with fins bent at bent portions in a zigzag and extending consecutively around a circumferential direction of the inner circumferential surface, and at at least a part of the bent portions of the fins, the height of the fins is set at 30 to 90% of the height of the fins excluding the bend portions. With such a heat transfer tube, pressure loss can be suppressed while increasing heat exchange performance.