公开(公告)号：US20210193106A1

公开(公告)日：2021-06-24

申请号：US17113491

申请日：2020-12-07

Applicant: LG Electronics Inc.

Inventor： Jongchan LEE ,  Youngeun CHO ,  Sunghyun KI ,  Goondong PARK ,  Geunbae HWANG

IPC: G10K11/178

Abstract: A refrigerator includes a noise reduction device. The noise reduction device measures noise generated from a machine room of the refrigerator and outputs a sound signal having a frequency canceling or reducing the noise.

公开(公告)号：US20200337510A1

公开(公告)日：2020-10-29

申请号：US16960963

申请日：2019-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Jongchan LEE ,  Geunbae HWANG ,  Goondong PARK

IPC: A47L5/26 ,  A47L9/00 ,  A47L9/22 ,  A47L9/28 ,  G10K11/16 ,  G10K11/178

Abstract: 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.

公开(公告)号：US20220364553A1

公开(公告)日：2022-11-17

申请号：US17592916

申请日：2022-02-04

Applicant: LG Electronics Inc.

Inventor： Jongchan LEE ,  Sunghyun KI ,  Hyeongjun LIM

IPC: F04B39/00 ,  F04B39/10 ,  F04B39/12

Abstract: A compressor includes: a case, a compression unit that is provided inside the case and that includes a cylinder and a piston configured to reciprocate inside the cylinder to compress refrigerant, a driving unit that includes a stator disposed inside the case and a plurality of permanent magnets configured to reciprocate with respect to the stator and that is configured to provide a driving force to the compression unit, and a resonator that is configured to reduce noises generated while the compression unit is operated, that is disposed between the compression unit and an inner surface of the case facing the compression unit in an axial direction, and that is spaced apart from the compression unit.

公开(公告)号：US20200329932A1

公开(公告)日：2020-10-22

申请号：US16960629

申请日：2019-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Jongchan LEE ,  Geunbae HWANG ,  Goondong PARK

IPC: A47L9/00 ,  A47L9/16 ,  A47L9/28 ,  G10K11/16 ,  G10K11/178

Abstract: 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.

公开(公告)号：US20240118016A1

公开(公告)日：2024-04-11

申请号：US18276683

申请日：2022-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Jongchan LEE ,  Youngeun CHO ,  Sunghyun KI ,  Geunbae HWANG ,  Hyungwoo KIM ,  Jonghun HA

IPC: F25D23/00

CPC classification number: F25D23/006 ,  F25D2201/30

Abstract: A refrigerator and a noise-reducing device mounted thereto are disclosed. The disclosed noise-reducing device, which comprises a hollow resonance chamber and a tubular acoustic filter inserted into the resonance chamber, is mounted at the side surface of a machine compartment, whereby not only heat due to the operation of a compressor is charged out of the machine compartment, but also noise transmitted from the compressor to the outside of the machine compartment is reduced through diffraction and resonance effects.