Pay attention to the rotation direction of EC centrifugal fan impeller

As we all know, EC centrifugal fan is very common in our production and life. The fan impeller is a very important part of the fan, and the shape and operation mode of the fan impeller are important indicators to determine the performance of the fan. The fan impeller has different rotation directions. Next, let's look at the EC centrifugal fan impeller rotation direction.
EC centrifugal fan impeller rotation judgment is relatively professional and difficult. EC centrifugal fan rotation judgment should be viewed according to the position on the other side of the fan inlet, that is, the bearing side. The impeller rotates clockwise and right. The impeller rotates counterclockwise and leftward. Angle is the location of the fan outlet. Suzhou Dingyu, as a manufacturer specializing in the production of EC centrifugal fan, will introduce it to you.
When the impeller rotates counterclockwise, and the fan outlet is at the bottom right, blowing gas horizontally, it is called 0 degree left.
When the impeller rotates counterclockwise, and the fan outlet is at the lower right, and the gas is blown 45 degrees upward, it is called 45 degrees left.
When the impeller rotates counterclockwise, and the fan outlet is on the right, blowing gas 90 degrees vertically upwards, it is called 90 degrees left.
When the impeller rotates clockwise, and the fan outlet is at the lower left, and the gas is blown out horizontally, it is called right 0 degree.
When the impeller rotates clockwise, and the fan outlet is at the lower left, and the gas is blown 45 degrees diagonally upward, it is called 45 degrees right.
When the impeller rotates clockwise, and the fan outlet is on the left, and the gas is blown 90 degrees vertically upwards, it is called right 90 degrees.
When we determine the rotation direction of the impeller of EC centrifugal fan, we turn clockwise to right rotation (right type) and counterclockwise to left rotation (left type). The imported fan is different. When we buy it, we still need to make clear in advance.
Regulation method of air valve and inlet blade of EC centrifugal fan
There are many ways to regulate the air volume of EC centrifugal fan, including inlet and outlet air valve regulation, volute air valve regulation, inlet blade regulation, moving wing regulation, revolution regulation, etc. For different types of fans, the energy saving effect varies greatly due to different regulation modes. The manufacturer of EC centrifugal fan mainly introduces the methods of downdraft valve adjustment and inlet blade adjustment as follows:
1. Air valve regulation
The regulation of the outlet air valve of the EC centrifugal fan is to change the characteristics of the pipe network, not the characteristics of the fan. The range of air volume regulation is generally all working conditions below the rated performance curve of the fan. Because the characteristics of the pipe network are changed by artificially increasing the resistance of the pipe network, the pressure drop is consumed by the additional resistance generated when the air valve is turned down, and the regulation economy is poor.
The regulating principle of the inlet air valve is the same as that of the outlet air valve when the piping is set at the suction side of the fan; However, when the piping is set at the exhaust side of the fan, it changes the performance curve of the fan by changing the inlet pressure of the fan, so the regulation is economical; The worm valve adjustment is to change the characteristics of the fan by changing the outlet area of the fan. Compared with the reduction of the air volume, the power change is small and the energy saving is not significant. In principle, these two kinds of regulation can be used in all working conditions under the rated curve, and can make the surge point shift to the direction of small flow. Therefore, they are widely used in fans with fixed speed.
2. Inlet blade adjustment
The inlet blade adjustment is to change the airflow direction of the suction impeller and change the performance curve of the fan by adjusting the blade.
The positive winding regulation of inlet air flow of EC centrifugal fan can realize all working conditions below the performance curve when the inlet guide vane angle is zero degrees; The negative winding regulation of the inlet air flow can increase the pressure and flow of the fan, but the regulation range is limited. Because the inlet blade adjustment has a wide adjustment range and high economy, and can realize automatic adjustment, it is widely used by fans.
How to determine the impeller rotation of EC centrifugal fan
EC centrifugal fan impeller rotation judgment is relatively professional and difficult. EC centrifugal fan rotation judgment should be viewed according to the position on the other side of the fan inlet, that is, the bearing side. The impeller rotates clockwise and right. The impeller rotates counterclockwise and leftward. Angle of view is the location of the fan outlet. Zhaoqing Detong, as a professional manufacturer specializing in designing, producing and selling EC centrifugal fan and other ventilation equipment, introduces to you:
1. When the impeller rotates counterclockwise, and the fan outlet is at the bottom right, blowing gas horizontally, it is called 0 degree left.
2. When the impeller rotates counterclockwise, and the fan outlet is at the lower right, and the gas is blown 45 degrees upward, it is called 45 degrees left.
3. When the impeller rotates counterclockwise, and the fan outlet is on the right, blowing gas 90 degrees vertically upwards, it is called 90 degrees left.
4. When the impeller rotates clockwise, and the fan outlet is at the lower left, and the gas is blown out horizontally, it is called right 0 degree.
5. When the impeller rotates clockwise, and the fan outlet is at the lower left, and the gas is blown 45 degrees diagonally upward, it is called 45 degrees right.
6. When the impeller rotates clockwise, and the fan outlet is on the left, and the gas is blown 90 degrees vertically upwards, it is called right 90 degrees.
When determining the rotation direction of the impeller of EC centrifugal fan, turn clockwise to turn right (right type) and counterclockwise to turn left (left type). The imported fan is different. Some national marks are contrary to ours. When we buy it, we still need to make clear in advance.
What about the rotation direction of EC centrifugal fan impeller? To sum up, the rotation direction of the impeller of the EC centrifugal fan can be said to have a great impact on the operation of the fan. Understanding the importance of the rotation direction of the impeller of the EC centrifugal fan will help us to make a general estimate of the operation of the fan and help us to carry out the maintenance of the fan.