公开(公告)号：US11160428B2

公开(公告)日：2021-11-02

申请号：US16453122

申请日：2019-06-26

Applicant: LG ELECTRONICS INC. ,  IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)

Inventor： Sangchul Lee ,  Changgun Lee ,  Kietak Hyun ,  Sejin Yook ,  Sanghee Woo ,  Seungyoon Noh

IPC: A47L9/16 ,  A47L5/22 ,  B04C5/185 ,  B04C5/28 ,  B04C9/00 ,  B04C5/04 ,  A47L5/24

Abstract: A cleaner includes a housing having a hollow inner space, a housing partition configured to divide the inner space into an first space and a second space, first and second communication holes formed through the housing partition to allow the first and second spaces to communicate with each other, an inlet through which air from an outside of the housing is introduced into the second space, an air discharge port through which air in the first space is exhausted to the outside of the housing, a fan arranged in the first space to draw air to the air discharge port, a first cyclone arranged in the second space to guide air to the first communication hole and separate dirt from the air, and a second cyclone arranged in the second space to guide a portion of air to the second communication hole and separate dirt from the air.

公开(公告)号：US10856711B2

公开(公告)日：2020-12-08

申请号：US16367775

申请日：2019-03-28

Applicant: LG ELECTRONICS INC.

Inventor： Kietak Hyun ,  Jungmin Ko ,  Soohan Eo ,  Sangchul Lee

IPC: B01D45/12 ,  B01D50/00 ,  A47L9/16 ,  A47L9/10 ,  A47L5/36 ,  B01D46/24 ,  B01D45/16

Abstract: A vacuum cleaner, including a cleaner body; and a dust collector provided in the cleaner body, wherein the dust collector includes a first cyclone provided within an outer case to filter foreign matter and dust from air introduced into the dust collector; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; a screw provided at a lower side of and surrounding the first cyclone, and having at least one vane spirally extended along a flow direction of the air introduced into the outer case to induce the inflow of foreign matter and dust filtered by the first cyclone into a first storage section.

公开(公告)号：US10575695B2

公开(公告)日：2020-03-03

申请号：US15557723

申请日：2016-03-11

Applicant: LG ELECTRONICS INC.

Inventor： Jeongho Lee ,  Changgun Lee ,  Sangchul Lee ,  Taekyung Kim ,  Younggyu Jung

IPC: A47L9/22 ,  F04D29/44 ,  A47L11/40 ,  F04D17/16 ,  A47L5/22 ,  A47L5/12

Abstract: The vacuum suctioning unit of the present invention includes: a cover provided with an air entrance; an impeller for circulating air that enters the air entrance; a motor provided with a shaft connected to the impeller; a guide device for guiding the flow of air that exits an exit of the impeller; and a motor housing that houses the motor and is provided with an air exit. The guide device includes: a guide body disposed below the impeller; a first guide vane formed on a side surface of the guide body and guiding air discharged from the impeller; and a second guide vane formed on the bottom surface of the guide body and connected to the first guide vane to guide air that is moved by the first guide vane. The entrance angle of the first guide vane is within the range of 10 to 27 degrees.

公开(公告)号：US10299646B2

公开(公告)日：2019-05-28

申请号：US15583309

申请日：2017-05-01

Applicant: LG ELECTRONICS INC.

Inventor： Kietak Hyun ,  Jungmin Ko ,  Soohan Eo ,  Sangchul Lee

IPC: B01D45/12 ,  A47L9/16 ,  B01D45/16 ,  A47L5/36 ,  B01D45/14 ,  B01D50/00

Abstract: A vacuum cleaner, including a cleaner body; and a dust collector provided in the cleaner body, wherein the dust collector includes a first cyclone provided within an outer case to filter foreign matter and dust from air introduced into the dust collector; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; and a rotatable shell provided at a lower side of the first cyclone so as to define a first storage section configured to collect foreign matter and dust filtered by the first cyclone between the rotatable shell and the outer case, and wherein the rotatable shell includes a skirt that extends downward and outward from an upper portion of the rotatable shell.

公开(公告)号：US11540682B2

公开(公告)日：2023-01-03

申请号：US17059336

申请日：2019-05-10

Applicant: LG ELECTRONICS INC.

Inventor： Kietak Hyun ,  Sangchul Lee ,  Jonguk Her

IPC: A47L5/24 ,  A47L9/12 ,  A47L9/16 ,  A47L9/28 ,  A47L9/32

Abstract: The present disclosure includes a first housing configured in a cylindrical shape, an inlet port provided to the first housing to suck air therein, an inlet pipe communicating with the inlet port and extending to a front side of the housing with a length-directional axis positioned side by side with a ground surface, a cyclone forming part provided to separate dust from air flowing into the first housing, a second housing communicating with the first housing and coupled to a rear side of the first housing, a fan provided with the second housing to provide a suction force to enable air to be sucked into the first housing through the inlet port, a battery provided to supply power to the fan, and a handle part including a handle base coupled to a top side of the first housing and a handle body connected to the handle base.

公开(公告)号：US11344168B2

公开(公告)日：2022-05-31

申请号：US17059012

申请日：2019-05-21

Applicant: LG ELECTRONICS INC.

Inventor： Kietak Hyun ,  Sangchul Lee ,  Jonguk Her

IPC: A47L9/16 ,  A47L5/24 ,  A47L9/32

Abstract: A cleaning appliance comprises a first housing having a hollow cylinder shape; a second housing fixed to a circumferential surface of the first housing; a third housing provided on a circumferential surface of the first housing and having an exhaust hole; a first communication hole between the first and second housings; a fan for moving air from the second communication hole to the exhaust hole; a particle separator for separating particles from the air by centrifugal force; a battery housing protruded from a rear surface of the first housing, wherein the center of gravity of the fan is located between the center of gravity of the particle separator and the center of gravity of the battery, and a rotary shaft for the fan is parallel with a straight line passing through the center of gravity of the particle separator along a longitudinal direction of the first housing.

公开(公告)号：US10398272B2

公开(公告)日：2019-09-03

申请号：US15583471

申请日：2017-05-01

Applicant: LG ELECTRONICS INC.

Inventor： Kietak Hyun ,  Jungmin Ko ,  Soohan Eo ,  Sangchul Lee

IPC: B01D45/12 ,  B01D45/16 ,  A47L9/16 ,  A47L5/36 ,  A47L9/10 ,  A47L9/12 ,  A47L9/20 ,  B01D45/14 ,  B01D46/00 ,  B01D50/00

Abstract: A vacuum cleaner, including a cleaner body; and a dust collector provided in the cleaner body, wherein the dust collector includes a first cyclone provided within an outer case to filter foreign matter and dust from air introduced into the dust collector; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; and a screw surrounding part of the first cyclone, and configured to be rotatable in at least one direction with respect to the first cyclone, wherein the screw includes a pillar that spans a height of the mesh filter; and a scraper provided on an inner surface of the pillar facing an outer surface of the mesh filter, and configured to sweep off dust and foreign matter accumulated on the mesh filter during the rotation of the screw.

公开(公告)号：US10314448B2

公开(公告)日：2019-06-11

申请号：US15445018

申请日：2017-02-28

Applicant: LG ELECTRONICS INC.

Inventor： Jungkyu Son ,  Bohyun Nam ,  Jaeyong Park ,  Sehwan Bae ,  Jonghyun Seo ,  Jinwoo Lee ,  Sangchul Lee ,  Kietak Hyun ,  Jungmin Ko ,  Suhan Eo

IPC: A47L5/36 ,  A47L9/12 ,  A47L9/24 ,  A47L9/00 ,  A47L9/10 ,  A47L9/28

Abstract: Provided is a vacuum cleaner including a cleaner body; a moving wheel provided at each of both side surfaces of the cleaner body, rotated for travelling of the vacuum cleaner and configured to support the cleaner body to be rotatable in normal and reverse directions; a wheel motor assembly connected to the moving wheel and configured to rotate the moving wheel for the travelling of the vacuum cleaner; a main motor provided inside the cleaner body, located at a rear side further than a vertical extension line of a rotating center of the moving wheel and driven to suction dust; and a battery provided inside the cleaner body, located at the rear side further than the vertical extension line of the rotating center of the moving wheel and configured to provide electric power to the main motor and the wheel motor assembly, wherein a center of gravity of the cleaner body is located at a rear of the vertical extension line of the rotating center of the moving wheel due to an arrangement of the main motor and the battery.

公开(公告)号：US10299647B2

公开(公告)日：2019-05-28

申请号：US15583394

申请日：2017-05-01

Applicant: LG ELECTRONICS INC.

Inventor： Kietak Hyun ,  Jungmin Ko ,  Soohan Eo ,  Sangchul Lee

IPC: B01D45/12 ,  A47L9/16 ,  A47L5/36 ,  B01D45/16 ,  B01D46/24 ,  B01D50/00 ,  A47L9/10

Abstract: A vacuum cleaner including a cleaner body; and a dust collector provided in the cleaner body, wherein the dust collector includes a first cyclone provided within an outer case to filter foreign matter and dust from air introduced into the dust collector; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; and a rotatable shell provided at a lower side of and surrounding the first cyclone so as to define a first storage section configured to collect foreign matter and dust filtered by the first cyclone between the rotatable shell and the outer case, wherein the rotatable shell includes a skirt having a plurality of steps arranged along a circumference of the rotatable shell.

公开(公告)号：US10186915B2

公开(公告)日：2019-01-22

申请号：US15004152

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Kwangyong Jang ,  Sangchul Lee ,  Kyunghoon Lee ,  Changhum Jo

IPC: H02K1/14 ,  H02K21/14 ,  H02K1/27 ,  H02K19/10 ,  H02K21/16 ,  H02K9/06 ,  H02K7/14

Abstract: A Blushless Direct Current (BLDC) motor may include a motor housing; a stator including a stator core installed within the motor housing and a coil wound in the stator core and that generates a magnetic field by applied power; and a rotor disposed within the stator and in which a magnet that interacts with the magnetic field is installed and that rotates within the stator by an interaction with the magnetic field. The stator core may include a back yoke in which straight portions and curved portions are alternately formed; and teeth protruded from the back yoke toward the magnet. The tooth include a neck protruded from the back yoke, and a shoe protruded from the neck and separated from the magnet and that encloses at least a portion of the magnet. A ratio A/B of a width A of the neck to a width B of a shoe end portion is 2.5 to 3.5. By optimizing a ratio A/B of a width A of the neck to a width B of the shoe end portion constituting the stator core, efficiency of a BLDC motor may be maximized.