What is the principle of three leaf roots blower?

Today, when learning mechanical engineering, the teacher talked about the principle of three leaf Roots blower, which was very interesting, so I want to summarize it.

Three blade Roots blower is a fan with small volume, low noise, large pressure and flow, which is composed of two gears, a pair of three blade impellers and a casing.

Its working principle is as follows:

When the gears start to rotate, they draw gas from the inlet into the casing.

Next, the gas will enter a three blade impeller, and the three blades will compress the gas and push it to the second three blade impeller.

The second impeller compresses the gas again, pushing the gas to the outlet, and producing high pressure and high flow airflow at the same time.

In this process, the rotation of the gear generates the suction and discharge of air, and the impeller is responsible for the compression and propulsion of air.

Since the clearance between the impeller and the casing is very small, the gas compression and propulsion is very efficient, which makes the three leaf roots blower have high efficiency and pressure.

In addition, three leaf Roots blower has another important feature, that is, its noise is very low.

This is because when the gas flows in the gap between the impeller and the casing, it will produce very small eddy currents and turbulence, thus reducing the generation of noise.

In short, the three leaf Roots blower is a very practical mechanical equipment, which can be widely used in various fields, such as air compression, dust removal, waste gas treatment, etc.

Its principle is simple and efficient, and the noise is low. It is a very good fan.