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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.:

US 11867429 B1

PDFFull Text
Date of Patent:
Jan. 09, 2024

Filed:

Aug. 26, 2020

Tankless water heater with integrated variable speed pump

Applicant:

Rinnai America Corporation, Peachtree City, GA (US);

Inventors:

Scott Gilman Humphrey, Newnan, GA (US);

Michael Scott Knoblett, Newnan, GA (US);

Assignee:

Rinnai America Corporation, Peachtree City, GA (US);

Attorney:

Quinn IP Law

Primary Examiner:

Edelmira Bosques

Assistant Examiner:

Michael James Giordano

Int. Cl.
CPC ...
F24H 15/175 (2022.01); F24D 19/10 (2006.01); F24H 1/10 (2022.01); F24H 9/02 (2006.01); F24D 17/00 (2022.01); F24H 15/219 (2022.01); F24H 15/223 (2022.01); F24H 15/34 (2022.01); F24H 15/215 (2022.01); F24H 15/36 (2022.01); F24H 15/281 (2022.01);
U.S. Cl.
CPC ...
F24H 15/175 (2022.01); F24D 17/0031 (2013.01); F24D 19/1051 (2013.01); F24H 1/10 (2013.01); F24H 9/02 (2013.01); F24H 15/215 (2022.01); F24H 15/219 (2022.01); F24H 15/223 (2022.01); F24H 15/34 (2022.01); F24D 2220/0207 (2013.01); F24D 2220/042 (2013.01); F24H 15/281 (2022.01); F24H 15/36 (2022.01);
Abstract

Various implementations include a water heater system. The system includes a variable speed pump. The variable speed pump has having an inlet and an outlet. The system includes a heat exchanger, having an inlet and an outlet. The heat exchanger outlet is fluidically connected to the variable speed pump inlet. The system includes an output temperature sensor disposed downstream of the heat exchanger outlet. The system includes a controller configured to receive a first temperature reading from the output temperature sensor. The controller is configured to control operation of the variable speed pump to adjust an output flow rate in response to the first temperature reading. The controller is further configured to receive a second temperature reading from a recovery temperature sensor on a storage tank. The controller is configured to turn off the variable speed pump upon a determination that the second temperature reading has reached a maximum temperature.

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