A basic guide to different types of blowers – A blower is a machine that increases air velocity when it passes through the impellers equipped in it. In simple words, you can say a blower is a piece of equipment that moves air at moderate pressure in a specific area. It has a wide range of applications in various industries such as cooling, conveying, ventilating, exhausting, etc., and is more efficient than the compressed air one. Blowers are mostly used where the pressure requirement is more than the fan and less than the compressor.

How Does Blowers Work?

In this basic guide to different types of blowers, we’ll share with you the simple working principle of blowers. They aim to increase the pressure of air or gas by the centrifugal movement of the rotor. When air is absorbed in the inlet valve, the impeller or rotor starts to rotate, and its channels start pushing the air forward by centrifugal force. Meanwhile, gas is compressed, and its pressure starts to increase linearly.

What Are The Different Types Of Blowers?

There are mainly five types of blowers, each having its own set of features and advantages.

#1. Positive Displacement Blowers

These blowers work in a similar way to positive displacement pumps. To be specific, they squeeze the air and, in turn, increase the pressure, then trap the air through one side and release it from the other side. Positive displacement blowers maintain a constant speed and airflow, no matter what changes occur in the air pressure. Moreover, there are two other types – Rotary Vane and Rotary Lobe. People call them rotary blowers, and they use them in heavy industries for moving gas from one side of a space to another.

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#2. Centrifugal Blowers

Their main function is to increase both the speed and volume of air or gas. To be specific, they are equipped with high-speed rotors or blades to transfer high velocity to the air or gas passing through them. Next, the blades in these blowers come in various shapes such as backward-curved, forward curved, and radial. People mostly use them to combust air supplies, control dust, and air conveyor systems.

#3. Helical Screw Blowers

These blowers have one main rotor that has two lobes. One rotor is fitted into another rotor’s flute in such a way that they move in a helical pattern. The manufacturer times its movement carefully so that both rotors never touch each other. They are more efficient than rotary lobe blowers as there is only a little leakage of air.

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#4. High-Speed Blowers

As the name suggests, people use these blowers to produce high pressure and flow. Thus, they operate with a motor’s help and dual impellers for double suction of air.

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#5. Regenerative Blowers

Here, regenerative blowers create pressure by the displacement of air particles. On rotation, the impeller draws and captures the air between each blade and then pushes the air forward from where it goes back to each blade’s bottom. They find excellent use in food manufacturing units and hospitals. The machine moves the air using non-positive displacement, which traps air and then forcing it to move is how a regenerative blower works.

What Factors Should You Consider While Selecting Blowers?

The selection of blowers is somehow the ratio between inlet pressure and outlet pressure. Therefore, the following factors should be kept in mind while buying blowers:

  • What is the type of blower?
  • Parameters of flow capacity.
  • What are the different designs of blades?
  • What is the highest operating pressure?
  • Design of port.
  • Dimensions.
  • Electrical ratings.

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Final Words

In conclusion, blowers have found their use in a variety of applications. No matter what purpose you need blowers, always make sure they are compatible with your application needs. They are reliable and easy to maintain and service. Afterward, we hope to deliver the right content to our readers about “Basic guide to different types of blowers”! Thanks for visiting GreenHouseCenter!


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