Low-noise centrifugal fan with noise reduction lining and air purification device

An air purification device and low-noise technology, which is applied in the field of fluid machinery and air purification, and can solve problems such as high sound absorption
CN107355397APending Publication Date: 2017-11-17加丁(天津)科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
加丁(天津)科技有限公司
Publication Date
2017-11-17

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Abstract

The invention discloses a low-noise centrifugal fan with a noise reduction lining. The fan comprises an impeller, a volute and a motor; the impeller and the motor are arranged in the volute, the motor is connected with the impeller, and is used for driving the impeller to rotate, and the fan is characterized in that the volute further comprises a perforated plate inner volute body and an outer volute body, the perforated plate inner volute body is arranged in the outer volute body, a containing cavity is formed and is filled with a soundproof sponge, and the outer surface of the perforated plate inner volute body is at least covered with a Kevlar laying layer serving as the noise reduction lining. The low-noise centrifugal fan has the good sound insulation effect and meanwhile has the higher noise absorbing effect, the noise of the low-noise centrifugal fan can be greatly reduced, and compared with a common centrifugal fan, the noise of the low-noise centrifugal fan is far lower than that of other centrifugal fans during running.
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Description

technical field

[0001] The invention relates to the fields of fluid machinery and air purification, in particular to a low-noise centrifugal ventilator equipped with a noise-reducing lining, which can be applied to air purifiers and ventilation devices of fresh air systems. Background technique

[0002] At present, with the rapid development of economy and society, the emission of vehicle exhaust and industrial waste gas is increasing day by day, and the resulting smog has gradually become a factor that seriously affects people's health. In order to reduce the impact of smog on people, air purifiers and fresh air systems have become a must-have for contemporary families just like televisions. The basic principles of air purifiers and fresh air systems are to suck indoor or outdoor air into a machine with filtering function, and discharge the filtered air into the room, thereby greatly reducing the dust in the air, especially PM2.5 content. Among them, the ventilator is the...

Claims

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