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:
Feb. 02, 2016
Filed:
Apr. 20, 2010
Applicants:
Young MO Kim, Gyeonggi-do, KR;
Young Sik Choi, Seoul, KR;
Inventors:
Young Mo Kim, Gyeonggi-do, KR;
Young Sik Choi, Seoul, KR;
Assignee:
Kyungdong Navien Co., Ltd., Pyeongtaek-si, Gyeonggi-do, KR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D 1/053 (2006.01); F28D 7/16 (2006.01); F28D 9/00 (2006.01); F24H 1/38 (2006.01); F28F 1/04 (2006.01); F28F 1/06 (2006.01); F28F 1/42 (2006.01); F28F 13/06 (2006.01);
U.S. Cl.
CPC ...
F28D 7/1692 (2013.01); F24H 1/38 (2013.01); F28D 7/1623 (2013.01); F28D 9/0081 (2013.01); F28F 1/04 (2013.01); F28F 1/06 (2013.01); F28F 1/42 (2013.01); F28F 1/426 (2013.01); F28F 13/06 (2013.01); F28D 1/05358 (2013.01); F28D 1/05366 (2013.01);
Abstract
The device relates to a heat exchanger in which heat transfer between heating water passing through the inside of heat exchanging pipes and combustion gas is efficiently performed. The heat exchanger includes a plurality of heat exchanging pipes, through the inside of each of which heating water passes. The cross-section of each of the heat exchanging pipes has protrusions and recessions alternately arranged in the width direction of the heat exchanging pipe, so as to extend the flow path for the combustion gas passing between the heat exchanging pipes.