Invention Grant
- Patent Title: Drain pump driving apparatus and laundry treatment machine including the same
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Application No.: US16094613Application Date: 2017-04-18
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Publication No.: US11236460B2Publication Date: 2022-02-01
- Inventor: Jungmoon Je , Chungill Lee , Kiwook Lee
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Ked & Associates, LLP
- Priority: KR10-2016-0047129 20160418
- International Application: PCT/KR2017/004139 WO 20170418
- International Announcement: WO2017/183886 WO 20171026
- Main IPC: D06F39/08
- IPC: D06F39/08 ; D06F33/42 ; H02P21/18 ; H02P21/22 ; H02P21/14 ; H02P27/12 ; D06F103/48 ; D06F37/12 ; D06F105/46

Abstract:
Disclosed is a drain pump driving apparatus and a laundry treatment machine including the same. The laundry treatment machine includes: a drain pump driving apparatus configured to drive a drain pump, wherein the drain pump driving apparatus includes: a motor to drive the drain pump; an inverter to convert a direct current (DC) power to an alternating current (AC) power by a switching operation, and output the converted AC power to the motor; an output current detector to detect an output current flowing to the motor; and a controller configured to control the inverter, wherein the controller is further configured to calculate a speed of the motor based on an output current, and calculate a lift, which is a difference between a water level of a water introduction part through which water flows into the drain pump and s water level of a water discharge part for discharging water from the drain pump, based on the calculated speed.
Public/Granted literature
- US20190127903A1 DRAIN PUMP DRIVING APPARATUS AND LAUNDRY TREATMENT MACHINE INCLUDING THE SAME Public/Granted day:2019-05-02
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