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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 12116713 B1

PDFFull Text
Date of Patent:
Oct. 15, 2024

Filed:

Apr. 19, 2019

Drain pump driving apparatus and laundry treatment machine including the same

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Jungmoon Je, Seoul, KR;

Chungill Lee, Seoul, KR;

Kiwook Lee, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

KED & Associates LLP

Primary Examiner:

Joseph L Perrin

Assistant Examiner:

Kevin G Lee

Int. Cl.
CPC ...
D06F 33/42 (2020.01); D06F 39/08 (2006.01); F04D 27/00 (2006.01); D06F 34/08 (2020.01); D06F 34/14 (2020.01); D06F 103/42 (2020.01); D06F 103/46 (2020.01); D06F 103/48 (2020.01); D06F 105/08 (2020.01); F04D 25/06 (2006.01); H02P 6/17 (2016.01); H02P 6/28 (2016.01);
U.S. Cl.
CPC ...
D06F 33/42 (2020.02); D06F 39/085 (2013.01); F04D 27/004 (2013.01); D06F 34/08 (2020.02); D06F 34/14 (2020.02); D06F 2103/42 (2020.02); D06F 2103/46 (2020.02); D06F 2103/48 (2020.02); D06F 2105/08 (2020.02); F04D 25/06 (2013.01); H02P 6/17 (2016.02); H02P 6/28 (2016.02);
Abstract

The present disclosure relates to a drain pump driving apparatus and a laundry treatment machine including the same. A drain pump driving apparatus according to an embodiment of the present disclosure includes a controller configured to drive a motor, during drainage, based on an output current and a direct current (DC) terminal voltage with a first power when a lift is at a first level and to drive the motor with the first power when the lift is at a second level that is greater than the first level, wherein the lift is a difference between a water level of a water introduction part through which water flows into a drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump. Accordingly, water pumping can be performed smoothly even if the lift is changed during the drainage.

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