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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 12006616 B1

PDFFull Text
Date of Patent:
Jun. 11, 2024

Filed:

Jul. 05, 2019

Drain pump driving apparatus and laundry treatment machine including the same

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Jieon Kim, Seoul, KR;

Jeongbin Rew, Seoul, KR;

Junho Lee, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

KED & Associates LLP

Primary Examiner:

David G Cormier

Int. Cl.
CPC ...
D06F 34/10 (2020.01); D06F 33/42 (2020.01); D06F 33/47 (2020.01); D06F 37/30 (2020.01); D06F 39/08 (2006.01); F04D 13/06 (2006.01); F04D 15/00 (2006.01); H02P 27/08 (2006.01); H02P 29/024 (2016.01); D06F 103/48 (2020.01); D06F 105/08 (2020.01); D06F 105/46 (2020.01); D06F 105/58 (2020.01); D06F 105/62 (2020.01); F04D 1/00 (2006.01);
U.S. Cl.
CPC ...
D06F 34/10 (2020.02); D06F 33/42 (2020.02); D06F 33/47 (2020.02); D06F 37/30 (2013.01); D06F 39/085 (2013.01); F04D 13/06 (2013.01); F04D 15/00 (2013.01); H02P 27/08 (2013.01); H02P 29/026 (2013.01); D06F 2103/48 (2020.02); D06F 2105/08 (2020.02); D06F 2105/46 (2020.02); D06F 2105/58 (2020.02); D06F 2105/62 (2020.02); F04D 1/00 (2013.01); H02P 2201/09 (2013.01); H02P 2201/15 (2013.01);
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 converter; an inverter to output converted AC voltage to a drain pump motor; an output current detector to detect an output current flowing in the motor; and a controller to control the inverter, wherein in case in which the speed of the motor increases and the output current flowing in the motor decreases during a predetermined period among an operation period of the drain motor, the controller controls the inverter to be turned off. Accordingly, it is possible to protect internal circuit elements in case the motor loses its synchronism.

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