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:
Nov. 14, 2017
Filed:
May. 11, 2011
Applicant:
Naoki Sugimoto, Anjo, JP;
Inventor:
Naoki Sugimoto, Anjo, JP;
Assignee:
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D 1/02 (2006.01); F28F 7/00 (2006.01); F28F 13/12 (2006.01); F28F 3/14 (2006.01); H05K 7/20 (2006.01); F28F 3/02 (2006.01); H01L 23/473 (2006.01); F28D 1/03 (2006.01); H01L 23/40 (2006.01);
U.S. Cl.
CPC ...
F28F 3/025 (2013.01); F28D 1/0333 (2013.01); H01L 23/473 (2013.01); F28D 1/0316 (2013.01); F28D 1/0325 (2013.01); F28D 1/0366 (2013.01); F28D 1/0375 (2013.01); F28F 2215/00 (2013.01); H01L 23/4012 (2013.01); H01L 2924/0002 (2013.01); H05K 7/20218 (2013.01); H05K 7/20254 (2013.01);
Abstract
An inner fin is a wave fin having board portions extending in a pipe longitudinal direction and a top portion connecting the board portions located adjacent with each other. The wave fin has a wave-shaped cross-section perpendicularly intersecting a pipe longitudinal direction, and the board portion is bent into a waveform extending in the pipe longitudinal direction when seen from a pipe layering direction. A wave pitch WP [mm], a wave depth WD [mm], and a passage width H [mm] are set to satisfy relationships of 2.2≦WP/WD≦4.28 and 0.5≦WD/H≦1.8.