Silencing method for air pipeline

Abstract

The invention discloses a silencing method for an air pipeline. The method includes the following steps that (1) a plurality of air outlets are installed at an outlet of the air pipeline, air outlet covers for adjusting the air outlet amount are arranged on the air outlets, and the air outlet amount of the air outlets can be adjusted conveniently through the air outlet covers; (2) the air outlet amount of the air outlets is adjusted, and the air outlet amount of one air outlet is reduced, so that flowing air generates turbulent flow when passing through the air outlet with the relatively-smaller air outlet amount, and the air noise of air flow exhausted from the other air outlets is reduced; and (3) a silencing pipe is installed on the air pipeline and is installed at the front end of theair outlets, many bent parts exist in the air pipeline, the air flow is prone to vibration and wind noise generation after passing through the bent parts, and after the air flow having the wind noisepasses through the silencing pipe, the silencing pipe absorbs most of the wind noise in the air flow, so that the wind noise is prevented from being exhausted through the air outlets, and the purposeof silencing is achieved.

Description

Technical field[0001]The invention belongs to the field of noise reduction methods, and particularly relates to an air duct noise reduction method.Background technique[0002]The fresh air system is an independent air treatment system composed of air supply system and exhaust system. It is divided into ducted fresh air system and ductless fresh air system. The ducted fresh air system is composed of fresh air blowers and pipe fittings. Purified outdoor air is introduced into the room, and the indoor air is discharged through pipes; the ductless fresh air system is composed of fresh fans, which are also used to purify outdoor air into the room; the ducted fresh air system is more suitable for industry, large-area office areas or classrooms due to the large amount of work When the fresh air system is used in the office area or classroom, it is necessary to reduce the noise as much as possible to prevent the noise generated by the fresh air system from affecting the work and study of indo...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the fresh air systems on the market use a single air outlet, which is easy to form wind noise at the position of the air outlet, and the outside of the fresh air duct is covered with sound insulation cotton to reduce the noise generated by the fresh air duct, but the sound insulation cotton needs to be replaced frequently to ensure The sound insulation effect causes the problem of high investment cost of the suction system, and the sound insulation cotton is wrapped outside the pipe, which easily makes the pipe occupy a larger area and reduces the indoor space

Images