The invention discloses a T-shaped impedance micropore multi-combination exhaust silencing device. The T-shaped impedance micropore multi-combination exhaust silencing device comprises a
metal frame,wherein a stainless steel
skin wraps the surface of the
metal frame, the whole
metal frame is T-shaped, an air inlet is formed in the
tail end of the T-shaped metal frame, exhaust outlets are formed in the left end and the right end of the T-shaped metal frame,
resonance boxes cover the side walls and the top face of the interior of the stainless steel
skin, a tight box wall is formed, and a second sealing layer is formed. In the device, a
metal flow guide wedge faces the air inlet, the left side and the right side of the
metal flow guide wedge are provided with a sliding rail and a bullet flow guide column respectively, and the bullet flow guide column is arranged on the sliding rail and can slide along the sliding rail. The
resonance boxes, the
metal flow guide wedge and the bullet flowguide column are filled with sound absorption materials, and holes are formed in the surfaces of the
resonance boxes, the metal flow guide wedge and the bullet flow guide column. According to the device, an expansion type impedance silencing principle is adopted, air can enter the device and can be rapidly expanded by 10 times or above in the channel space of the device, and the air speed is rapidly reduced; and meanwhile, sound
waves are refracted along a 90-degree
elbow,
sound energy is consumed, and noises can be reduced by 45 dB or above.