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:
Apr. 25, 2017
Filed:
Mar. 19, 2015
Applicant:
Noritz Corporation, Hyogo, JP;
Inventors:
Assignee:
NORITZ CORPORATION, Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 9/20 (2006.01); F24D 19/00 (2006.01); F28F 27/00 (2006.01); F24H 1/14 (2006.01); F24H 9/00 (2006.01);
U.S. Cl.
CPC ...
F24H 9/2035 (2013.01); F24D 19/0092 (2013.01); F28F 27/00 (2013.01); F24H 1/145 (2013.01); F24H 9/0042 (2013.01);
Abstract
A hot water supply deviceincludes a fin-and-tube type heat exchanger () that applies heat to fresh water with combustion gases, and a heat exchanger casing () for housing the heat exchanger (), and in order to be able reliably to determine by a simple method whether the hot water supply device is clogged by lime scale, there are provided a temperature detector () for detecting the surface temperature of the heat exchanger casing () and a control unit () that determines that scale has built up in the heat exchange tubing () of the heat exchanger () when the temperature detected by this temperature detector () is greater than a set temperature.