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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 12442122 B1

PDFFull Text
Date of Patent:
Oct. 14, 2025

Filed:

Oct. 07, 2022

Systems and methods for performing additive dispenser diagnostics in a washing machine appliance

Applicant:

Haier Us Appliance Solutions, Inc., Wilmington, DE (US);

Inventors:

Wonmyung Seo, Seongnam, KR;

Hyoyeol Maeng, Bucheon-si, KR;

Assignee:

Haier US Appliance Solutions, Inc., Wilmington, DE (US);

Attorney:

Dority & Manning, P.A.

Primary Examiner:

Cristi J Tate-Sims

Int. Cl.
CPC ...
D06F 33/37 (2020.01); D06F 23/04 (2006.01); D06F 33/47 (2020.01); D06F 34/04 (2020.01); D06F 34/24 (2020.01); D06F 34/28 (2020.01); D06F 39/02 (2006.01); D06F 39/08 (2006.01); D06F 103/16 (2020.01); D06F 103/20 (2020.01); D06F 105/02 (2020.01); D06F 105/42 (2020.01); D06F 105/58 (2020.01); D06F 105/62 (2020.01);
U.S. Cl.
CPC ...
D06F 33/47 (2020.02); D06F 23/04 (2013.01); D06F 33/37 (2020.02); D06F 34/04 (2020.02); D06F 34/24 (2020.02); D06F 34/28 (2020.02); D06F 39/022 (2013.01); D06F 39/085 (2013.01); D06F 2103/16 (2020.02); D06F 2103/20 (2020.02); D06F 2105/02 (2020.02); D06F 2105/42 (2020.02); D06F 2105/58 (2020.02); D06F 2105/62 (2020.02);
Abstract

A washing machine appliance includes a wash tub positioned within a cabinet, a water supply for dispensing wash fluid into the wash tub, a bulk dispenser for selectively adding a wash additive to the wash fluid, and a conductivity sensor for measuring an electrical conductivity of the wash fluid collected in the wash tub. A controller is configured to operate the water supply to dispense the wash fluid, measure a first conductivity of the wash fluid using the conductivity sensor, operate the bulk dispenser to dispense the wash additive, measure a second conductivity of the wash fluid using the conductivity sensor, determine that the wash additive was not dispensed based at least in part on the first conductivity and the second conductivity, and implement a responsive action.

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