The difference between forward explosion-proof centrifugal fan and backward explosion-proof centrifugal fan


Anti-corrosion fan manufacturersThe explosion-proof centrifugal fans in China are widely used, regardless of whether it is building ventilation or production equipment, and can be divided into forward centrifugal fans and backward centrifugal fans. Different structures determine different performance and use. The following editor will introduce you to the forwardExplosion-proof centrifugal fanThe difference with the backward explosion-proof centrifugal fan.

BackwardExplosion-proof centrifugal fanIt is composed of an asynchronous motor with an outer rotor and a plastic/aluminum impeller. The motor has a low temperature rise and has the unique advantages of ventilation, heat dissipation and self-cooling, which extends the reliability of the fan's life.

Explosion-proof centrifugal fanIt is a backward curved impeller with features such as compact structure, large air volume, high static pressure, small oscillation, low noise, and convenient installation. It is mainly used for purification workbenches, purification units, ventilation duct dust removal, purification air conditioning systems, environmental protection and pollution control and other cooling equipment supporting work. The forward explosion-proof centrifugal fan is composed of an external rotor motor, a plastic or metal forward-curved impeller, and a plastic or metal volute. It has the characteristics of compact structure, small volume, light weight, convenient installation and use, and is widely used in automatic Forced ventilation of control equipment and electronic equipment, and indoor pipeline dust removal, exhaust, heat removal, environmental protection, air purification and pollution control and other occasions.

The forward and backward explosion-proof centrifugal fans mainly refer to the difference in the blades of the fan. The forward type is generally called a blower, and the backward type is generally called an induced draft fan. The difference is the length of the impeller crosspiece and the impeller edge.

The forward direction is parallel to the edge of the impeller, and the exit angle of the impeller is greater than 90 degrees. The forward impeller is also called the forward impeller. The forward impeller is mostly high-pressure.

The backward direction is not parallel to the impeller, and the length is a few centimeters or several millimeters from the edge of the impeller. It means that the exit angle of the impeller is less than 90 degrees. The backward impeller is also called the backward impeller.

There are mainly three differences:

1. Power

The static pressure head used to overcome the resistance of the system, the forward centrifugal fan is smaller than the backward centrifugal fan.

Because the channel in the backward-blade fan gradually expands, its hydraulic loss is smaller than that of the forward-type fan.

Therefore, the power of the forward centrifugal fan is lower than that of the backward centrifugal fan.

2. Energy consumption

Because the power of the forward centrifugal fan is lower than that of the backward centrifugal fan, its electrical energy consumption is greater than that of the backward centrifugal fan.

3. Noise

The running noise of the forward centrifugal fan is greater than that of the backward centrifugal fan.

Hebei Shunteng Fan Manufacturing Co., Ltd. has a professional skill team to select suitable explosion-proof centrifugal fans for you. We focus on the development and production of centrifugal fans. The development team is committed to providing customers with various solutions for centrifugal fans. We are mainly in Hebei , Northeast, Henan, Tianjin, Shaanxi, Inner Mongolia, Shanxi, Ningxia regions, if you are interested in the price of our products, you are welcome to inquire!

How do anti-corrosion fan manufacturers install seals

4 common problems of fire-fighting smoke and anti-corrosion centrifugal fans