Noise reduction device and household electrical appliance product

The invention discloses a noise reduction device and a household electrical appliance product. The noise reduction device comprises a shell; the noise source is arranged in the shell cavity of the shell; the perforated plate is arranged in the shell cavity around the noise source, an annular resonant cavity used for absorbing noise of a preset frequency band is formed between the perforated plate and the shell, and a through hole array facing the annular resonant cavity is formed in the perforated plate. The noise reduction device is simple in structure, the noise reduction performance of the household electrical appliance product is improved, and the loudness value of the household electrical appliance product in the working state is also improved. 本发明公开了一种降噪装置和家电产品，该降噪装置包括：壳体；噪声源，设置在壳体的壳体腔中；穿孔板，围绕噪声源设置在壳体腔中并与壳体之间形成有用于吸收预设频段的噪声的环形共振腔，穿孔板上设有朝向环形共振腔的通孔阵列。本发明中的降噪装置结构简单，提升了家电产品的降噪性能，还提升了家电产品工作状态下的响度值。