fans are so called because they look a lot like the exercise wheel in a hamster cage.
Squirrel cage fans, also sometimes known as centrifugal fans or a type of blower fan, are devices
that are used to move air or fumes out of a particular region of a building or area.
The squirrel cage fan is
in many ways similar to an exhaust fan, but it differs in one very important aspect. The outflow of
the air in a squirrel cage fan is perpendicular to the inflow of the air. This allows for many more
uses of the squirrel cage fan when compared to the exhaust fan.
The fan wheel of squirrel
cage fans is composed of a number of fan blades, which are also called ribs. These blades or ribs
are mounted around a hub. The hub turns on a driveshaft that passes through the fan
The gas or
air enters the squirrel cage fan from the side of the fan wheel, turns 90 degrees and flows over the fan blades and
exits the fan housing. The perpendicular bend of the air causes it to accelerate because of centrifugal forces.
This is the main reason squirrel cage fans are also referred to as centrifugal fans, although all centrifugal fans
may not be the same as squirrel cage fans.
centrifugal forces not only accelerate the air or gases, it also pressurizes them. This allows the squirrel cage
fan to be used for many different functions. One of the most common use of squirrel cage blower fans is for
central heating/cooling systems.
other hand, they are also very well suited for many different industrial processes. Recently, benefits of using
squirrel cage fans in air pollution control systems have been found and their use has become very popular within
Centrifugal and Squirrel Cage Blower Fans
are many other common and not so common uses of centrifugal and squirrel cage blower fans. They are very highly
recommended for green houses. They are far more efficient and faster than exhaust fans or duct fans and can easily remove the dead air
in your greenhouse and replace it with fresh air in a matter of minutes.
acceleration and pressure built up in the squirrel cage fan due to centrifugal forces increases the fan’s
ability to push air out through various obstacles. This means that if you were to use a carbon filter, using
squirrel cage fans will be far more efficient than using any other type of fan. Most exhaust fans would not have
been able to generate enough pressure or the speed to push air through a carbon filter.
Depending on what you
intend to use your squirrel cage fan for, it is important to do adequate research
to identify the most suitable configuration for you. For instance, depending on the size of your
greenhouse, you will need to decide whether you need a large heavy duty squirrel cage fan or
multiple small pieces.