Range hood with noise reduction structure

Abstract

The invention discloses a range hood with a noise reduction structure. The range hood is characterized in that an air inlet cover is arranged between the air inlet of a smoke collecting cover and a machine box, the noise reduction structure is arranged on the outer side of the side wall of the air inlet cover, and the noise reduction structure comprises a noise reduction module and a thin film; the noise reduction module includes a shell, a first noise reduction channel located above and a second noise reduction channel located below are formed in the shell, and the first noise reduction channel and the second noise reduction channel are curved; a third noise reduction channel is also formed, between the first noise reduction channel and the second noise reduction channel, in the shell, and the third noise reduction channel communicates with both the first noise reduction channel and the second noise reduction channel so as to form a resonant cavity; a first noise inlet is formed at the joint of the first noise reduction channel and the side wall of the air inlet cover, a second noise inlet is formed at the joint of the second noise reduction channel and the side wall of the air inlet cover, and a noise outlet is formed at the joint of the third noise reduction channel and the side wall of the air inlet cover; and the thin film comprises a first film arranged at the first noiseinlet and the second noise inlet correspondingly and a second thin film arranged at the noise outlet.

Description

technical field [0001] The invention relates to kitchen equipment, in particular to a range hood with a noise reduction structure. Background technique [0002] When the household range hood is working, due to the high-speed rotation of the impeller, vibration noise, aerodynamic noise and other noises are generated in the fan system. Some of these noises are transmitted through the air inlet channel of the range hood, which brings bad experience to the user. [0003] Existing noise reduction measures generally reduce noise by adding sound-absorbing cotton in the fan or in the shell of the range hood at a position opposite to the fan. And the smoke collection hood, the body is provided with a smoke inlet and a flue, and a noise reduction fan connected to the smoke inlet and the flue is provided in the smoke collection hood. The noise reduction fan includes a casing, and the inside of the casing contains an axial flow fan. One side of the shell is the air inlet, and the other...

AI Technical Summary

Problems solved by technology

[0004] Using the above sound-absorbing cotton noise reduction method can generally achieve a better noise reduction effect at the beginning, but with the long-term use of the range hood, the sound-absorbing cotton will accumulate a lot of oil, which will affect the noise reduction effect, and the sound-absorbing cotton The accumulated oil stains caused by the material are difficult to clean, which requires the user to replace it regularly, which affects the user experience

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