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.

Date of Patent:
Mar. 20, 2018

Filed:

Nov. 26, 2013
Applicant:

Noritz Corporation, Hyogo, JP;

Inventors:

Yu Fujimoto, Kakogawa, JP;

Scott Isaksen, Torrance, CA (US);

Bronwyn Planasch, Santa Ana, CA (US);

Assignee:

NORITZ CORPORATION, Hyogo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28G 15/00 (2006.01); F24H 9/20 (2006.01); F24H 9/00 (2006.01); F24D 19/00 (2006.01); F28G 9/00 (2006.01); F24H 1/14 (2006.01);
U.S. Cl.
CPC ...
F28G 15/003 (2013.01); F24D 19/0092 (2013.01); F24H 9/0042 (2013.01); F24H 9/2035 (2013.01); F28G 9/00 (2013.01); F24H 1/145 (2013.01);
Abstract

A water heating apparatus includes a burner, a heat exchanger for heating hot and cold water with use of heat from the burner, a scale detector for detecting occurrence of scale clogging in the heat exchanger, a notifying unit for notifying an error when the scale detector detects occurrence of a scale greater than or equal to a predetermined amount, and a controller performing a control of allowing the notifying unit to notify an error and prohibiting combustion operation of the burner when the scale detector detects occurrence of a scale greater than or equal to the predetermined amount. The controller is configured to start a cleaning mode for cleaning inside the heat exchanger when the controller detects shifting operation to the cleaning mode after the combustion operation of the burner is prohibited.


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Fujimoto, Yu. (2018). Water heating apparatus (U.S. Patent No. 9921012). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9921012

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