What are the differences and differences between centrifugal fans and negative pressure fans?

In the work, many users are often confused about what is a centrifugal fan and what is a negative pressure fan. In fact, there are many differences between the two, in order to help you better distinguish between the two different equipment, Kunshan Shengtang ventilation will introduce you briefly next, hoping to let you distinguish which is the centrifugal fan, which is the negative pressure fan.

Centrifugal fan

First of all, the two devices have great differences in the working principle, for example, for centrifugal fans, when the equipment is working, it mainly relies on the input mechanical energy to raise the gas pressure and complete the gas discharge equipment, which belongs to a driven fluid machinery. As for the negative pressure fan, it is through the help of air to achieve the cooling principle of convection and negative pressure ventilation, so as to quickly force the indoor hot gas out of the outdoor to achieve the effect of ventilation. Under normal circumstances, the cooling and ventilation effect of the device can reach 90%-97%.

Centrifugal fan

Secondly, the characteristics shown by these two devices are also very different, let's take a look at the main characteristics of the centrifugal fan. The device mainly uses the principle of converting kinetic energy into potential energy, accelerating gas through a high-speed rotating impeller, and then slowing down and changing direction to convert kinetic energy into potential energy. If it is a single-stage device, then the gas will enter the impeller from the axis, and then will become radial, after the diffuser, the speed will be reduced.

Negative pressure fan

The characteristics of the negative pressure fan are very different from those of the centrifugal fan. The equipment has many advantages, not only can save a lot of cost input, but also has low energy consumption, stable and reliable operation, and very high work efficiency during use. At the same time, it also has two functions of blowing air and pumping air.

In short, whether it is centrifugal fans or negative pressure fans, they have their own advantages and disadvantages, for users, we need to choose the right product according to their actual situation.