公开(公告)号：US11587545B2

公开(公告)日：2023-02-21

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 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.