Lg Electronics Inc.

Lg Magna E-powertrain Co., Ltd.

Jongsu Kim

Sungil Park

Hwang Kim

Jaewon Jang

Taehee Kwak

Changhum Jo

Jungwook Moon

Jihwan Kim

Minjung Kim

Kyeonghwan Kim

Junho Ahn

Geunbae Hwang

Seaunglok Ham

Dongmyung Shin

Gyeongjae Park

Wonjung Sung

Hojun Shin

Yangsoo Lee

Dongseong Kim

The present invention relates to a motor comprising: a motor housing; a stator which is provided in the motor housing and has a coil; a rotor installed in the stator to be rotatable about a rotary shaft; and a spray hole which is formed in the circumferential surface of the rotor by passing through the circumferential surface in a radial direction and which sprays a cooling fluid in the motor housing onto the coil according to the rotation of the rotor. Therefore, cooling by oil convection can be accelerated while minimizing resistance due to the oil.

Motor

A motor includes a rotor assembly and a stator. The rotor assembly includes a rotatable shaft extending in an axial direction, a rotor core coupled to the rotatable shaft and having a plurality of holes penetrating through the rotor core in the axial direction, a first end ring coupled to one end of the rotor core and configured to guide oil supplied to the rotor assembly into the plurality of holes, and a second end ring coupled to the opposite end of the rotor core and configured to guide oil passing through the plurality of holes in a radial direction.

Disclosed herein is a motor including a shaft, a rotor, a motor housing forming an inner space to receive the shaft and the rotor therein, a stator received in the motor housing and disposed outside the rotor based on a radial direction of the shaft, a first flow path disposed outside the stator based on the radial direction of the shaft such that a first fluid flows in the first flow path, the first fluid being discharged to the inner space and cooling the stator and the rotor, and a second flow path disposed between the first flow path and the stator based on the radial direction of the shaft such that a second fluid flows in the second flow path, the second fluid absorbing heat of the stator transferred through a flow path wall.

Disclosed is a robot cleaner. The A robot cleaner comprising: a cleaner main body defining an external appearance of the robot cleaner, a suction unit provided in the cleaner main body for suctioning air containing dust, a dust separation unit for separating the dust from the air suctioned through the suction unit, a fan unit connected to the dust separation unit for providing suction force to the suction unit, and a housing having an air flow path for guiding the air discharged from the fan unit, wherein the housing accommodates a battery for supplying electricity to the fan unit, and wherein the air passing through the air flow path exchanges heat with the battery.

Robot cleaner

Disclosed is a robot cleaner. The robot cleaner includes a cleaner main body defining an external appearance of the robot cleaner, a fan unit mounted in the cleaner main body for generating suction force, a suction unit provided in the cleaner main body and having a suction port for suctioning air containing dust via driving of the fan unit and a first discharge port and a second discharge port for discharging the air containing the dust, a first guide member coupled to the first discharge port, a second guide member coupled to the second discharge port, and a cyclone unit for separating the dust from the air suctioned through the suction port using centrifugal force, the cyclone unit having a first communication hole for communicating with the first guide member and a second communication hole for communicating with the second guide member.

Disclosed is a robot cleaner. The robot cleaner comprising: a cleaner main body defining an external appearance of the robot cleaner, a suction unit provided in the cleaner main body for suctioning air containing dust, a dust separation unit for separating the dust from the air suctioned through the suction unit, and a fan unit connected to the dust separation unit for providing suction force to the suction unit, wherein the fan unit includes: a drive motor, a first chamber surrounding the drive motor and provided with a first suction hole and a first exhaust hole, and a second chamber surrounding the first chamber and provided with a second suction hole and a second exhaust hole, wherein the fan unit includes a cover placed at an upper side of the second suction hole for preventing noise generated from the drive motor from being emitted through the second suction hole, and wherein the cover includes: a cover part for blocking a path of noise transmitted through the second suction hole; and a support part for seating the cover part on a top of the second chamber.

A robot cleaner configured to elastically deform a brush part using contact force between bristles and a floor and then restoring the brush part to vibrate the bristles, thereby improving cleaning performance. The robot cleaner includes a case that moves on a floor, a brush shaft mounted to the case such that the brush shaft rotates by driving force from a drive unit, an elastic member fixed to the brush shaft, the elastic member made of an elastic material, and a brush part fixed to the elastic member, the brush part having bristles, wherein the brush part generates generate vibration during deformation and restoration of the elastic member when external force is applied. The elastic member deforms due to contact force between the bristles and the floor and is then restored, and the brush part vibrates during deformation and restoration of the elastic member.

A robot cleaner includes a body forming an external appearance of the robot cleaner, a body moving part provided to the body to move the body, a body driving unit to drive the body moving part, a dust collector to capture suctioned foreign substances and provided with a first chamber and a second chamber communicating with the first chamber, a suction generation unit to supply suction force to the dust collector, and a guide member to guide the foreign substances captured in the first chamber to the second chamber and to apply pressure to the foreign substances in the second chamber in order to compress the foreign substances.

A robot cleaner includes a cleaner body, a suction unit, and a cyclone unit. The cyclone unit has a first suction opening and a second suction opening for sucking air, and a first cyclone and a second cyclone for passing air therethrough, the air having dust filtered therefrom by a centrifugal force. A first guiding member and a second guiding member extend upwardly from the suction unit toward the cyclone unit with an inclination angle, the first guiding member for connection between the suction unit and the first suction opening, and the second guiding member for connection between the suction unit and the second suction opening. A dust box communicated with a dust discharge opening is provided at a front side of the cyclone unit so as to collect dust filtered by the cyclone unit. The dust box is partially or wholly accommodated between the first and second guiding members.

Disclosed is a robot cleaner. The robot cleaner includes a case forming the external appearance of the robot cleaner, an agitator rotating and contacting a surface to be cleaned, a dust collector in which foreign substances are collected and a suction unit providing suction force to the dust collector, and the agitator is arranged between the dust collector and the suction unit. Therefore, the robot cleaner reduces loss of suction force generated from the suction unit.

A robot cleaner includes: a suction module configured to suck dust-included air; a cyclone module configured to separate dust from the dust-included air sucked through the suction module, and having a dust discharge opening; a first air flow guide and a second air flow guide spaced apart from each other, and connecting the suction unit to the cyclone unit; a dust box detachably coupled to the dust discharge opening of the cyclone module, and provided between the first and second air flow guides; a drive module provided between the first and second air flow guides; and a dust compressor provided in the dust box, and mechanically coupled to the drive module when the dust box is mounted to the cyclone module, and formed to be rotatable bi-directionally based on a driving force from the drive module such that dust collected in the dust box is pressed to have a deceased volume.

A cleaner body forms an outer appearance of a robot cleaner. A suction module provided in the cleaner body, and configured to suck dust on a surface to be cleaned. A first guiding member and a second guiding member communicate with the suction module, and spaced apart from each other, and a cyclone unit is configured to separate dust from air sucked through the first and second guiding members, using a centrifugal force. A fan module is connected to the cyclone module, and includes a motor module, and a first fan module and a second fan module connected to two sides of the motor module and configured to generate a suction force. A noise reducing cover is provided over an upper side of the fan module so as to reduce noise, and extends toward two sides of the motor module to cover the first and second fan modules.

A robot cleaner includes a cleaner body for forming appearance of the robot cleaner, a driving unit mounted to the cleaner body and configured to generate a suction force, a suction unit provided at the cleaner body and configured to suck dust-contained air by the driving unit, a first guiding member and a second guiding member communicated with the suction unit, respectively, and spaced from each other, and a cyclone unit configured to filter dust from air sucked through the suction unit using a centrifugal force. The cyclone unit has a first suction opening and a second suction opening communicated with the first guiding member and the second guiding member, respectively. The cyclone unit further has a first cyclone and a second cyclone configured to pass dust-filtered air therethrough.

Growing community of inventors

Seoul, South Korea

Jongsu Kim