What makes centrifugal blowers so popular over other options of vacuum or compressed air applications is that they provide dry, clean, oil-free air. Also, this category of blowers does not require high power to operate. In almost every industry, there is a requirement of a higher volume of high-pressure air systems to run various important processes. Hence, centrifugal blowers are being used in many industrial units which make them popular all over the world. But how do centrifugal blowers work? We have explained the working of centrifugal blowers in complete detail.
Working of Centrifugal Blowers
Centrifugal devices or blowers operate constantly at high pressure due to high-speed impellers or blades which operate at as high speed as 15,000 rpm. The air which enters the center of a spinning impeller gets divided between the impeller’s vanes. With the help of centrifugal force, the air accelerates outwards due to the turning of the impeller. And then the high-speed air gets diffused and slowed down in the surrounding blower to create a high pressure which is required for various applications in every industry. After the entry of air into the blower, its speed gets increased by the impeller. As it gains the kinetic energy, it simply accelerates with radially outside through the outlet.
Different drive mechanisms are used in these centrifugal blowers and in order to adjust the air flow rates, other airflow resistant components are fitted into these blowers. The various mechanisms which could be used in the centrifugal blowers are belt, variable and direct driven. In order to put a resistance to the air flow, dampers and louvers, ducts as well as other different airflow resistant components are used in these centrifugal blowers.
The working of a centrifugal blower depends on its type whether it is a single or multi-stage unit. Also, the blade orientations also differentiate between various centrifugal blowers. A centrifugal blower could have radial, forward curved and backward curved blade orientation which alters the speed of the working mechanism. HSI parts of blowers are quite popular all over the world and many industries are using it for getting excellent results. The types of centrifugal blower to use depends on the need. For the requirement of a uniform airflow, a single stage centrifugal blower is used. On the other hand, for the requirement of varying flow of air at a fixed pressure, a multi-stage blower is preferred. Also, the choice also depends on whether you require low, medium or high pressure of air in a given situation.