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:
Jan. 12, 2021
Filed:
Jan. 04, 2019
Noritz Corporation, Hyogo, JP;
Naoya Shiotsu, Hyogo, JP;
Takeshi Ohigashi, Hyogo, JP;
Masaki Kondo, Hyogo, JP;
Norihide Wada, Hyogo, JP;
NORITZ CORPORATION, Hyogo, JP;
Abstract
The heat exchange device () includes a primary heat exchanger (), a secondary heat exchanger (), and a connecting pipe (). The connecting pipe connects the primary heat exchanger and the secondary heat exchanger. The primary heat exchanger () includes a primary heat exchange part (), a shell plate () surrounding the primary heat exchange part, and a body pipe part () for cooling the shell plate. The body pipe part () is disposed closer to a burner than the primary heat exchange part () and is connected to the connecting pipe (). The primary heat exchange part () includes a first heat transfer tube part () connected to the body pipe part (), and a second heat transfer tube part () connected to the first heat transfer tube part and disposed on a side opposite to the body pipe part with respect to the first heat transfer tube part.