Shulou(Shulou.com)05/31 Report--

Hello everyone, Lin Fei to answer the above questions, axial flow fan parameters, axial flow fan many people do not know, now let's take a look!

What sounds strange to the axial flow centrifugal fan is everywhere around us because it is an important part of air conditioning. The following IT encyclopedia will introduce you one by one through the functional definition, difference and internal relationship of axial flow fan and centrifugal fan.

When the centrifugal impeller rotates at a high speed, the inertia force produced by the impeller increases the pressure energy of the fluid. It is usually used in situations where the flow rate is relatively small and the pressure energy is relatively large. When the axial flow impeller rotates at high speed, the lift produced by the impeller increases the pressure energy of the fluid. It is usually used in situations where the flow is relatively large and the pressure can be relatively low.

1. The centrifugal fan changes the flow direction of the medium in the draft tube, while the axial fan does not change the flow direction of the medium in the draft tube.

two。 The former has a large air volume and pressure, while the latter has a low air pressure.

3. The installation of the former is complex, while that of the latter is simple.

4. The former motor is generally connected to the fan through the shaft, while the latter motor is generally connected to the fan.

5. The former is often installed at the inlets and exits of air conditioning units, boiler drums, induced draft fans, etc. The latter is often installed in the air duct or the front end of the air duct outlet; the centrifugal fan has a large pressure head and a small air volume. The axial flow fan has large air volume and small pressure head. It is difficult for a centrifugal fan to have the capacity of a single fan as large as an axial fan. 1. Objective: in order to overcome the resistance of fluid flow, the fluid must have certain pressure energy. Fans (and pumps) are fluid machines that generate pressure energy from the fluid.

Axial flow fan

For a certain type of fan (and pump), there is a certain constant specific speed = (n * Q 0.5) / (h 0.75). The specific speed reflects the performance characteristics of a series of fans (and pumps): high specific speed flow, small pressure head, low specific speed flow, large pressure head. However, high specific speed and low specific speed are the characteristics of axial flow and centrifugal fans (and pumps), respectively. The specific speed reflects the structural characteristics of a series of fans (and pumps). When the specific speed changes from small to large, the ratio of impeller diameter D2 to inlet diameter D0 decreases, while the ratio b2/D2 of outlet width b2 to impeller diameter D2 increases. From the overall structure, the centrifugal flow from the initial radial flow will eventually become the axial flow.

After the detailed introduction above, I believe you have some understanding of axial flow fan and centrifugal fan. Secondly, Bian Xiao suggested that in this era of rapid development of science and technology, we should learn more new knowledge and keep pace with the times, so as to make our life more convenient, more comfortable and safer.

At the end of this article, I hope it will be helpful to you.

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