Prevention of vibration and noise during installation of spiral duct

The light transmission method is to select the strong perspective power of the light source to the small round hole, and the system conducts the judging inspection method for the rigorous level of the spiral duct. The experimental method is to use a shielded light bulb with a working voltage not higher than 36V and an output power of about 100W on a spiral duct that must be long and short in a dark natural environment. Slowly adjust one side of the air duct to the other end. If the light source can be observed outside the spiral air duct during the experiment, it indicates that the stainless steel air duct has leaks and repairs are carried out on the ventilation part of the spiral air duct.

① When installing the centrifugal fan, set the damping equipment according to the layout regulations or the construction process regulations.

② The centrifugal fan and the spiral duct are connected by plastic hoses. The plastic hose of the suction port of the centrifugal fan must be installed tightly and properly to prevent the soft connection from reducing the total area of the air inlet and causing noise and vibration.

③ The spiral wind control is made, installed and connected with the components, and the connection is tight and there is no ventilation condition to prevent ventilation noise.

④ In order to avoid the vibration of the spiral duct, a support frame should be installed at the corner of the stainless steel duct of the system software, and at the junction with the exhaust fan and the air outlet.