1. The ventilator installation base (foundation, hanger) should have sufficient strength, stability and durability, and the vibration of the base should meet the following requirements:
1) The natural vibration frequency of the basic device shall not be greater than 1/3 of the rotational speed of the motor and fan;
2) The difference between the vibration speed when the fan is running and the vibration speed when the fan is stationary must be more than 3 times.
2. The connection between the inlet and outlet of the ventilator and the air pipe should be provided with a flexible joint. The air inlet pipe, air outlet pipe and other devices should be independently supported and firmly supported by the foundation or other components of the building. The casing should not bear the weight of other parts.
3. When the ventilator is installed on a building component, vibration isolation measures should be taken.
4. The fan installation can refer to the following national building standard design drawings.
5. The duct fan can be installed on the straight air pipe, which has the advantages of convenient connection and small space occupation.
