| 摘要 |
This invention is about a system which is providing the noise of air vacuum and motor coming from the air intake system to be dispelled in such type of vehicles like bus, minibus, and etc. where an alternator air intake system is used in order to provide sufficient ventilation. In the vehicles where the acoustic filter subject to this invention is applied, the air of environment inside the vehicles is absorbed by the air intake holes, and goes through the acoustic filter system subject to this invention, and then, by means of the special sections of the guiding discs (2), the air moves along the system as three separate wings by hitting the surfaces of these discs at an angle of 90° every time. Thus, it is provided that the sound waves, which is dispersed from the motor and carried by the air that is transferred from the inside of the vehicle to the outside, lose energy and wane on every hit performed inside this filter system. Consequently, the sound waves have less energy and strength when they reach to the inside of the vehicle. |
