A noise reduction device for range hood

Abstract

The invention relates to a silencing device used for a range hood. The silencing device is arranged in a smoke channel and comprises at least one silencing plate. Each silencing plate comprises a plane, and an inclined angle of a certain degree is formed between at least one portion of the plane and the flowing direction of smoke in the smoke channel. At least two silencing plates with the certain inclination angles are arranged, and a silencing groove is formed between every two adjacent silencing plates, so that the contact area of airflow to be silenced and the silencing plates is increased, and the silencing effect is better; and meanwhile, upper connecting parts and lower connecting parts are adopted for being fixedly connected with the silencing plates, so that the silencing plates are firmly fixed, and noise is better reduced. Due to the fact that the silencing device has the technical effects, an air duct machine comprising the silencing device is lower in noise and better in comfort.

Description

technical field [0001] The invention belongs to the technical field of range hood accessories, and in particular relates to a noise reduction device for a range hood. Background technique [0002] Range hood, also known as range hood, is a kitchen appliance that purifies the kitchen environment. It is installed above the healthy and energy-saving range hood stove in the kitchen. It can quickly take away the waste burned by the stove and the oil fume harmful to the human body produced during the cooking process, and discharge it to the outside, reduce pollution, purify the air, and have anti-virus and explosion-proof safety guarantees. effect. [0003] Chinese Patent No. 03265300.X discloses "a filter and silencer device for range hood"; the device consists of a silencer pipe, a filter cartridge, a filter element, a filter cartridge, a smoke guide, a smoking pipe, and a filtrate. Among them, the filter element is set in the filter cartridge, the filter cartridge is located ...

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Problems solved by technology

[0003] Chinese Patent No. 03265300.X discloses "a filter and silencer device for range hood"; the device consists of a silencer pipe, a filter cartridge, a filter element, a filter cartridge, a smoke guide, a smoking pipe, and a filtrate. Among them, the filter element is set in the filter cartridge, the filter cartridge is located at the upper end of the filter cartridge, and the smoking pipe is arranged at the lower end of the filter cartridge; the smoke guide cover is arranged between the filter cartridge and the smoking pipe, and between the silencer pipe and the casing. The pipe reduces the noise of the range hood, but when the motor is installed at the lower end of the silencer pipe, it will still generate a certain amount of noise during operation. If the noise reduction treatment is not carried out, it will seriously affect the user's comfort during use.

[0004] Traditional air duct machines generally use sponge or other sound-absorbing structures on the casing, but they still cannot reduce noise very well, and the noise is still very loud

In the prior art, there is also a muffler installed in the air duct, but the setting of the muffler not only affects the air volume and increases the wind resistance, but also the existing muffler and the air duct machine are not fixed well, which increases the noise instead; it causes a lot of trouble to the user,

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