Novel low-noise multi-wing centrifugal ventilator

• Main Author: CHEN SHAODE
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The novel low-noise multi-wing centrifugal ventilator comprises a volute provided with an air inlet and an air outlet, a multi-wing fan blade driven by a motor is installed in the volute, a limiting ring is installed on the inner side of the air inlet, an elastic drainage layer with the smooth surface is arranged on the inner wall of the limiting ring, and the elastic drainage layer is arranged on the outer side of the volute. A supporting air bag connected with the air outlet is arranged between the drainage layer and the inner wall of the limiting ring and connected with an exhaust valve. The supporting air bag and the drainage layer are arranged, the supporting air bag is used for supporting the drainage layer, so that the surface of the drainage layer is flat, airflow turbulence is reduced, the surface of the drainage layer is smooth, impact force of airflow is reduced, noise reduction is promoted, the supporting air bag is connected with the air outlet, inflation equipment does not need to be additionall