Lg Electronics Inc.

Geunbae Hwang

Jaehyun Kim

Jangwon Lee

Youngsoo Kim

Jinhyouk Shin

Goondong Park

Jongchan Lee

Kietak Hyun

Jaedal Lee

Kyeongseon Jeong

Chungook Chong

Hyunsup Song

Kyuchun Choi

Jongjin Woo

Sunghyun Ki

Jongsu Kim

Dongkyun Nam

Kyungseok Min

Chung-Ook Chong

Jounyoung Kim

Youngeun Cho

To achieve the objects described above, the cleaner according to some embodiments of the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker and a detection unit detecting noise or vibration, and configured to cause an output of the speaker to be reduced a level of the noise of at least one frequency range of 1500 Hz or less the noise generated when the fan module is operated, based on the detection signal of the detection unit. wherein the main body includes an exhaust outlet through which air in the airflow path is exhausted and a sound outlet through which the sound of the speaker is exhausted, wherein the exhaust outlet and the sound outlet look the same direction relative to the main body.

Cleaner

The cleaner according to the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from the air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker, and configured to control the output of the speaker to increase a level of the noise of at least one range of the frequency range of 2000 Hz or more and 8000 Hz or less.

A refrigerator includes a noise reduction device and a machine room that accommodates a condenser and a compressor. The noise reduction device includes a sensing unit configured to measure noise generated from the machine room of the refrigerator and a generating unit configured to output a sound signal having a frequency canceling or reducing the noise. The machine room is defined by a case that has a communication portion configured to communicate a fluid between an inside of the case and an outside of the case to thereby exchange heat between the fluid and the condenser and between the fluid and the compressor.

Refrigerator with compressor noise reduction

A hair dryer is provided that may include a main body including a discharge outlet through which fluid may be discharged outside of the main body, a handle that extends from the main body, including an inlet through which fluid enters the handle, a flow path that extends from the inlet to the discharge outlet, a fan provided inside of the handle, and provided in the flow path to blow the fluid, and a noise attenuation space provided inside of the handle, and to surround at least a portion of the fan along an inner circumferential direction of the handle, attenuating noise generated by the fan.

Hair dryer

A method of making a motor having a shaft; a pair of end plates arranged to be spaced apart from each other on the shaft; a magnet disposed between the pair of end plates; and a rotor case which surrounds the outer peripheries of the pair of end plates and the outer periphery of the magnet and is made of a synthetic resin material, wherein each of the pair of end plates includes: a flange part, one surface of which faces the magnet; and a cylinder part protruding in a direction opposite to the magnet from the flange part, and the flange part includes a tapered part having an outer diameter which decreases toward the cylinder part.

Method for manufacturing a motor

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.

Robot cleaner

A suction unit includes a suction motor for generating air flow; a noise reduction unit which surrounds the suction motor and acts as a resonator in order to reduce noise generated during the operation of the suction motor; and a motor chamber which surrounds the noise reduction unit. The noise reduction unit includes an air flow path which provide a path of air flowing by the suction motor, a noise reduction chamber for eliminating the noise of at least one frequency band, and at least one communicating hole which causes sound wave of the noise to enter the noise reduction chamber. The air flow path is divided from the noise reduction chamber and thus the sound wave of the noise enters the noise reduction chamber through the communicating hole during a process in which air passes through the air flow path.

Suction unit

A lawn mower robot system, comprising: a lawn mower robot disposed with a moving device; a mowing device disposed in the lawn mower robot and mowing lawns; a first communication device disposed in the lawn mower robot and transmitting an inquiry signal for state information; a plurality of boundary display apparatuses, arranged in a lawn presence region, disposed with a second communication device for receiving the inquiry signal for the state information from the first communication device and for transmitting an acknowledge signal for the state information to the first communication device; a controller for recognizing a plurality of absolute coordinates from the lawn presence region based on the acknowledge signal for the state information received from the second communication device and for controlling the mowing device within the limit of the plurality of absolute coordinates.

Lawn mower robot system and method of controlling the same

A lawn mower robot includes a body including a mowing device; a sensor disposed in the body and sensing light signal produced from a signal producing unit in the outside; a moving device disposed in the body; and a controller controlling the moving device based on information sensed from the sensor, wherein the controller controls the moving device so that the lawn mower robot is moved along the light signal.

Lawn mower robot and method of programming a lawn presence region into memory

A vacuum cleaner is disclosed. The vacuum cleaner includes a dust separation device provided in a body; a dust collection device connected with the dust separation device; a dust compression part movably provided in the dust collection device, to compress dust by applying a pressure to dust collected in the dust collection device selectively; a liquid accommodation part provided in the dust collection device or the body, to accommodate a predetermined liquid; and a liquid exhaustion part connected with the liquid accommodation part, to exhaust the liquid toward the dust in the dust compression performed by the dust compression part, wherein the liquid exhaustion part comprises an opening/closing member provided therein to control flow of the liquid, and the opening/closing member is transformed by an external force to guide the liquid to be exhausted outside the liquid exhaustion part.

Vacuum cleaner

A vacuum cleaner is disclosed. The vacuum cleaner includes a body having a vacuum motor provided therein; a dust collection device provided in the body to collect dust; a dust compression device expandable or contractible selectively; a passage switching device configured to selectively communicate the dust compression device with a low pressure part having a lower pressure than a pressure of the dust collection device and a high pressure part having a higher pressure than a pressure of the dust collection device.

The present invention comprises: a collecting section mounted at one side of the pathway, in which the suction force of a vacuum cleaner for sucking dust is transmitted, and moves at least some of the sucked dust towards one direction; a dust collecting section made of transparent material coupled with the collecting section, in which the receiving status of the inflow of dust through the collecting section is exposed to the outside; a discharge section which guides air and dust, which has passed through the dust collecting section, to be discharged into the pathway that transmits the suction force of a vacuum cleaner; and a foreign material discharge means which guides the flow of air into the inner corner of the dust collecting section by the operation of the user and forcibly discharges the remaining dust in the dust collection section to the outside. According to the present invention, the invention enables the user to check the status of the dust that is sucked and the convenient discharge of the dust collected in the inside of the collecting section.

Visualization device for dust collection of vacuum cleaner

The present invention relates to a visualization device for dust collection of a vacuum cleaner, the visualization device includes a collecting unit mounted on one side of a pathway on which the suction force of a vacuum cleaner for sucking dust is transmitted, and moves at least some of the sucked dust in one direction, a dust collecting unit of transparent material coupled with the collecting unit and exposes a state of dust received by the collecting unit to the outside, a discharge unit which guides air and dust, which has passed through the dust collecting unit, to be discharged into the pathway that transmits the suction force of the vacuum cleaner, a foreign material separation unit provided in the dust collecting unit to generate cyclonic flow, and a foreign material discharge unit inserted into the inside of the foreign material separation unit by the manipulation of a user from one side of the dust collecting unit and allows the inflow of air from the outside into the inside thereof to discharge dust from the inside of the dust collecting unit while breaking the cyclonic flow. Accordingly the invention enables the user to check the status of the dust that is sucked and the convenient discharge of the dust collected in the inside of the collecting unit.

Growing community of inventors

Seoul, South Korea

Geunbae Hwang