The invention belongs to range hood equipment for kitchens, and particularly relates to a range hood
noise reduction method and device and a range hood using the device. The
noise reduction device comprises a cover part covering a
flue duct
system of the range hood, wherein the cover part covers the area from the
butt joint part between a range hood body and a fan to an air outlet of the fan, a
closed cavity is formed among the cover part, the air outlet fan of the range hood and impellers, and a sound absorption material layer is arranged on the inner surface of the cover part. According to the technical scheme,
noise in a noise gathering area can be processed, the noise
performance index during operation of the range hood is greatly improved, the noise
absorption ratio on the clapping part is greatly improved, and good use experience is provided for a user. According to the device, a semi-closed sound absorption structure with a wedge part is located at a neck part of the range hood,namely the air outlet fan position, so that the structure is not in direct contact with a
flue duct, the semi-closed sound absorption structure is not easy to cover by oil
stain of the range hood, sothat good sound absorption performance can be kept in a long period.