First of all, when connecting the centrifugal cooling fan, the foundation joint surface, and the inlet and outlet air ducts, they should be adjusted to fit naturally, not forcibly connected, and the weight of the air ducts should not be concentrated on the casing to avoid deformation of the casing and affect the normal operation. The inlet and outlet air ducts of the centrifugal fan should be connected with hoses, and attention should be paid to the horizontal position of the fan.

Secondly, when installing the centrifugal ventilation fan, it is necessary to first check whether the connection of each part is tight, whether the rotation is sensitive, etc., and also check whether there are debris in the casing. After the installation is completed, it is necessary to check whether the installation tools are left out. Otherwise, it will affect the normal use of the fan, and even threaten the performance of the fan.

Finally, after the installation is completed, the trial operation can be carried out only after all parts are confirmed to be normal. In the process of trial operation, the current should be well controlled and the rated value should not be exceeded. In order to prevent the motor from being burnt due to overload, it must be carried out under no load when the 12 volt centrifugal fan is started and tested. If the condition is good, gradually open the valve until the specified operating conditions. After installation, try to rotate the impeller to check whether it is sensitive. If it is found to be wrong, it should be adjusted in time.

Forward bent impeller, back bent impeller and radial impeller are all common drum designs in centrifugal fans, and they have some differences in performance, efficiency and application. Here is a comparison between the three types of impellers:

 

 

1,Forward-bent impeller: The installation direction of the blade is consistent with the rotation direction of the impeller, which is a forward-bent impeller.

The characteristics of the forward curved impeller are simply that the blade is narrow and small, and the outlet wind pressure is high. Front curved blade drums generally produce lower noise levels than back curved blade drums. Because the forward-bent blade reduces the impact and eddy noise of air passing through the blade, it may be more appropriate in some noise-sensitive applications.

 

2, Backbent impeller: its obvious feature is that the installation direction is opposite to the rotation direction of the impeller. The backward-bent impeller has high speed, large air volume and low pressure, but high efficiency. The efficiency of the centrifugal fan with the backward impeller in China can reach 80%-90%, which is widely used, and is not easy to scale and overload. Front curved blade drums generally produce lower noise levels than back curved blade drums. Because the forward-bent blade reduces the impact and eddy noise of air passing through the blade, it may be more appropriate in some noise-sensitive applications.

 

3,Radial impeller: The outside extension of the blade is at a 90 degree Angle to the tangent line of the direction of rotation of the blade, that is, the radial impeller. The performance of radial impeller is between the front bending type and the back bending type, and also has its characteristics of not easy to scale, so it is used in mine and other occasions.

 

 

 

 

 

It is important to note that the specific drum design chosen is evaluated based on your specific application needs and operating conditions. It is recommended to consult a professional centrifugal fan manufacturer or supplier when purchasing centrifugal fans to get the best advice for your specific application. Guangdong Chungfo Electronic Technology company is a wholesale DC centrifugal fan manufacturer, whether it is dc centrifugal fan, dc cooling centrifugal fan, or centrifugal cooling fan we have, welcome major buyers to come to purchase consultation.