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. 09, 2021
Filed:
Jun. 15, 2018
Applicant:
Purpose Co., Ltd., Fuji, JP;
Inventors:
Toshiaki Aoki, Fuji, JP;
Tetsuya Oishi, Fuji, JP;
Assignee:
PURPOSE CO., LTD., Fuji, JP;
Primary Examiner:
Int. Cl.
CPC ...
F24H 8/00 (2006.01); F28D 1/02 (2006.01); F24H 1/20 (2006.01); F28D 1/047 (2006.01); F28F 9/02 (2006.01); F28D 7/16 (2006.01); F28F 27/00 (2006.01); F28D 21/00 (2006.01);
U.S. Cl.
CPC ...
F24H 8/00 (2013.01); F24H 1/205 (2013.01); F28D 1/0213 (2013.01); F28D 1/0475 (2013.01); F28D 1/0476 (2013.01); F28D 7/1638 (2013.01); F28D 7/1653 (2013.01); F28D 7/1684 (2013.01); F28D 21/0003 (2013.01); F28D 21/0007 (2013.01); F28F 9/0209 (2013.01); F28F 9/0246 (2013.01); F28F 27/00 (2013.01);
Abstract
A heat exchanger tube for transferring a heat of an exhaust gas to a fluid to be heated includes a turn-back portion formed in an intermediate portion of the heat exchanger tube and a reciprocating conduit portion. The reciprocating conduit portion includes a conduit portion leading from a starting end of the heat exchanger tube to the turn-back portion, and a conduit portion leading from the turn-back portion to a terminal end of the heat exchanger tube. A space equal to or greater than the outer diameter of the conduit portions is provided between these conduit portions.