How to achieve side channel blower noise reduction
From the side channel blower noise mechanism and unit radiation sound to analyze, the blower operation generally produces the following different types of sound: (1) Solid sound triggered by vib……
From the side channel blower noise mechanism and unit radiation sound to analyze, the blower operation generally produces the following different types of sound:
(1) Solid sound triggered by vibration brought on by blower operation;
(2) Due to the air flow through the blower size of different inlet and outlet pressure changes, causing air flow pulsation triggered by airflow noise.
Ways to decrease noise and vibration
The control of engineering noise is generally considered from three aspects: one is to reduce the sound source; The second is the receiver of sound; Three is the sound transmission way to hand, seclusion blower vibration on the building and the effect of the air duct system.
1, Vibration isolation design
The reinforced concrete foundation and floor of the blower into one, using the vibration isolator of the blower manufacturer fixed the blower, the import and export of the blower using soft connection, in order to reduce the vibration of the air duct system.
2, Decrease the noise of the air duct system
When the blower operates a particular quantity of air, the intensity of noise generated by the duct system is related to the gas velocity in the duct. The smaller sized the cross-sectional area of the duct, the greater the speed of the duct, the stronger the sound. 2 mufflers are installed in the inlet and outlet of the blower to reduce the noise in the pipeline. The inlet and outlet of the blower and the muffler are soft connected tubes, and the vibration of the blower is separated from the impact of the air duct system.
3, Design sound insulation wall
The style of sound insulation wall primarily starts from the techniques of sound absorption, sound insulation and noise decrease. The standard option is to build two layers of hollow sound insulation brick wall, noise decrease result is ideal, since the existing room installed blower, muffler area is limited, so in the style consider in the initial room unchanged, the use of the initial brick wall with acoustic board, rock wool board, high-density board, forming effective sound absorption, sound insulation wall.
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