Basic knowledge of blower fans

2020-07-13 16:36
The blower fans is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. The blower fans is a driven fluid machine.
blowers

The purpose of the blower fans:
 
① Supply (/exhaust) air to the building and replace the indoor polluted air with clean air.
 
②Explosion-proof exhaust air-exclude flammable and explosive gases. This kind of blower fans has certain requirements on the structure.
 
③Fire and smoke exhaust-When the building is on fire, remove high-temperature smoke and dust. This type of blower fans must pass the national mandatory fire detection certification.
 
④ Pneumatic transportation-use wind energy to mix and transport powder or granular objects.
 
⑤Exhaust air containing corrosive gas-exhaust gas with corrosive gas is mostly used in industry.
 
⑥Dust removal-use wind energy to remove attachments.
 
blower fans classification:
 
According to the principle of inlet and outlet:
 
Axial blower fans: refers to a blower fans whose gas enters the impeller and the direction of the gas leaving the impeller are on the same horizontal line. It is suitable for the situation where the air volume is large and the static pressure is not too large.
 
Centrifugal blower fans: refers to a blower fans with a 90-degree angle between the air inlet direction and the air outlet direction (when the gas leaves the impeller). It is suitable for high wind pressure and large air volume, and can overcome great resistance.
 
Mixed flow blower fans: refers to the blower fans bounded between the centrifugal blower fans and the axial blower fans, that is, the angle between the air inlet direction and the air outlet direction is neither 90 degrees nor on the same horizontal line. It combines the centrifugal blower fans and the axial blower fans Features.
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