The difference between axial fan and centrifugal fan
The high temperature resistant air duct mainly cooperates with various high temperature resistant fan equipment for negative pressure resistant air supply and exhaust air, including ventilation such as fresh air supply and exhaust air. This range is very wide. For example, the air in factory workshops and production sites needs to be sent indoors when harmful gases need to be discharged outdoors. At this time, a large-flow low-pressure air supply pipe is used, and a telescopic air supply pipe is most suitable.
The most commonly used high-temperature air ducts in the market are axial flow ducts and centrifugal ducts. These two types of fans are used together with ventilation ducts to send air to designated places. Axial flow ducts and centrifugal fans are widely used. What is the difference between them? How does it work? Hear what Hangzhou Aifuluo Electric Co., Ltd. said.
High temperature resistant axial flow fan has a very wide range of uses. It is an airflow in the same direction as the axis of the blade, such as an electric fan. The external fan of the air conditioner is an axial fan. It is called "axial flow" because the gas flows parallel to the fan axis. Axial fans are usually used in applications requiring high flow and low pressure. The axial fan fixes the position and moves the air. The axial flow fan is mainly composed of a fan impeller, a casing, and a high temperature resistant telescopic ventilation pipe. The structure is simple, but the requirements for the ventilation pipe are very high. The air duct requires high temperature resistance, positive and negative pressure, acid and alkali corrosion resistance, and flexibility.
1. Working principle of axial fan
When the impeller rotates, the gas enters the impeller axially from the air inlet, is pushed by the blades on the impeller, the gas energy increases, and then flows into the guide vanes. The guide vane converts the deflected airflow into axial flow, and at the same time introduces the gas into the high temperature resistant ventilation pipe, further converts the kinetic energy of the gas into pressure energy, and finally introduces it into the working pipeline.
Axial fan is also called local fan. It is a fan commonly used in industrial and mining enterprises. However, unlike ordinary fans, the motor and blades are all in a cylinder with a cylindrical shape for local ventilation and easy installation. The ventilation effect is obvious, safe and reliable, and the ventilation pipe can be connected to send the wind to the designated area.
2. What is the difference between an axial fan and a centrifugal fan
a. The centrifugal fan changes the flow direction of the medium in the air duct, and the axial flow fan does not change the flow direction of the medium in the air duct.
b. The former is more complicated to install.
c The former motor and fan are generally connected by a belt-driven runner, while the latter motor is generally located in the fan.
d. The former is often installed at the inlet and outlet of air conditioning units, boiler drums, induced draft fans, etc. The latter is often installed in the ventilation duct or in front of the duct outlet.
a. After the axial flow fan is installed, check the flexibility of the fan rotation before starting, and turn the blades by hand to check whether the jam is jammed or not. Check whether there are leftovers and other debris in the fan and the adjacent telescopic duct.
b. Check whether the damper in the pipeline is open.
c. Personnel should stay away from the fan.
d. Start the fan and check whether the rotation of the fan blades is consistent with the rotation mark. After the inspection is qualified, stop the test after 10-30 minutes to check whether the blades are loose and whether the bolts connecting the vibration damping seat and the base are loose. After everything is normal, it is officially started and put into operation.
The above is the introduction of Hangzhou Aifuluo Electric Co., Ltd. Do you have a better understanding of the difference between the high temperature resistant telescopic ventilation pipe used for the axial fan and the centrifugal fan?Related reading: more products