公开(公告)号：US20220361726A1

公开(公告)日：2022-11-17

申请号：US17627917

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunku KWON ,  Sehwa CHOE ,  Donghyun LIM ,  Chaseung JUN

IPC: A47L9/28 ,  A47L5/30 ,  A47L5/36 ,  A47L9/04

Abstract: The present disclosure provides a control method capable of, by using a current value of a nozzle, determining whether a nozzle is separated from a vacuum cleaner and whether the nozzle is reconnected to the vacuum cleaner after separation. To this end, a vacuum cleaner may comprise a nozzle connectable to a suction unit for suctioning dusts. The nozzle may comprise a rotary cleaning unit for applying pressure to a cleaning target surface so as to separate a foreign substance therefrom, and a nozzle motor for driving the rotary cleaning unit. In order to drive the nozzle, a voltage having been controlled by a pulse width modulation (PWM) method is applied, and a measurement unit included in the vacuum cleaner may measure a current value of the nozzle, the current value depending on the applied voltage.

公开(公告)号：US20220273150A1

公开(公告)日：2022-09-01

申请号：US17627968

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunku KWON ,  Sehwa CHOE ,  Donghyun LIM ,  Chaseung JUN

IPC: A47L9/28 ,  A47L5/28 ,  A47L5/36 ,  A47L5/24 ,  A47L5/22 ,  A47L9/06

Abstract: The present disclosure provides a control method for automatically detecting what kind of nozzle is a nozzle mounted on a cleaner by using different starting current profiles. The cleaner may include a suction unit for suctioning dust, and various nozzles which are detachable from the suction unit. The nozzle may include a rotation cleaning unit which is accommodated in the nozzle to clean a surface to be cleaned, and a nozzle driving unit for driving the rotation cleaning unit. The nozzle may exhibit different starting current profiles depending on the number of rotations or reduction ratio of the nozzle driving unit, or whether an auxiliary control unit is included.