Noise reduction device for industrial fan

Abstract

The invention discloses a noise reduction device for an industrial fan. A sound absorption and insulation chamber is arranged outside the fan and a motor; an air inlet is formed in a position facing the non-output end of the motor, in the sound absorption and insulation chamber; an air inlet silencer is arranged on the air inlet; the output end of the motor is connected with the fan; the air inlet of the fan is formed in the sound absorption and insulation chamber; an air outlet is connected to the outside of the sound absorption and insulation chamber through an air outlet pipe; and an air outlet silencer is arranged on the air outlet pipe. The noise reduction device disclosed by the invention has the advantages that the structural design is simple; the whole device is not provided with a forced air inlet heat dissipation motor in the prior art, and a plurality of air inlet pipes, air outlet pipes and silencers arranged on the air inlet pipes and the air outlet pipes are reduced, so that the manufacturing cost is reduced, and the absorption and the insulation of the noise of the motor and the fan are effectively guaranteed; indoor temperature can be kept within 30 DEG C in summer, so that the temperature in the sound absorption and insulation chamber is greatly lowered, and the service life of equipment and the working environment for maintenance staff are guaranteed.

Description

technical field [0001] The invention relates to a noise control device, in particular to a noise reduction device for industrial fans. Background technique [0002] Noise control is necessary for existing industrial environmental protection. The noise of industrial fans is particularly obvious, and the main sources of noise are: air inlet, fan body, motor and air outlet; the existing treatment method is to use the fan and motor as a suction partition Acoustic cover, ventilation mufflers are arranged at the air inlet and outlet, but this method has brought another negative effect, resulting in poor heat dissipation of the motor, causing motor failure or even burning. In order to solve this problem, the existing technology is A forced ventilation muffler is added to the sound insulation room of the fan and motor for heat dissipation (such as figure 1 shown). With such a set of equipment, the cost of noise control has increased a lot, and when the maintenance personnel enter ...

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Problems solved by technology

[0002] Noise control is necessary for existing industrial environmental protection. The noise of industrial fans is particularly obvious, and the main sources of noise are: air inlet, fan body, motor and air outlet; the existing treatment method is to use the fan and motor as a suction partition Acoustic cover, ventilation mufflers are arranged at the air inlet and outlet, but this method has brought another negative effect, resulting in poor heat dissipation of the motor, causing motor failure or even burning. In order to solve this problem, the existing technology is A forced ventilation muffler is added to the sound insulation room of the fan and motor for heat dissipation (such as figure 1 shown)

With such a set of equipment, the cost of noise control has increased a lot, and when the maintenance personnel enter the soundproof room for maintenance in summer, the indoor temperature is as high as 60 degrees, which makes the maintenance personnel unable to stay inside for a long time, and the high temperature also affects the service life of the equipment. , in view of the above-mentioned shortcomings existing in the prior art, there is a need for a noise reduction device that can reduce the cost of environmental protection treatment, effectively reduce noise, ensure the temperature of the soundproof room, and ensure the life of the equipment

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