Bladeless Ceiling Fan with Basic Aerodynamic Principles

Many people are wondering how a bladeless ceiling fan works. It seems like the fan work by magic as you see no fan blades but air blows from the hoop after you switch on the fan. Of course this is not magic. The way the bladeless fan works is just the same as the way jet planes fly.

It applies basic aerodynamic principles. This bladeless fan has some benefits for homeowners. That is why it becomes very popular to be used in any homes. If you are interested in and curious about how this fan works, you can read the explanation below.

Actually a bladeless ceiling fan has blades. It is called “bladeless” because the 40-watt electric motor which drives the blades is hidden in the base of the unit.

There are vent holes in the base. These holes function to circulate the air from the base to the hollow hoop. In order to make the air move, the air is sucked by the motor-driven impeller fan.

There is a 1.3 mm-wide slot at the back of the hoop that completely run and face forward. The air is pushed from the thin slot into a channel called a Coanda adhesion airfoil. The air is blown like a forward-moving annular jet flow without stopping.

The bladeless ceiling fan can increase air circulation significantly. When air is forced from the quite plump hoop through the slender slot, its pressure drops so it speeds up.

The air alongside the hoop is sucked by the low-pressure, high-velocity annular air stream. This causes the circulation of air increases while it puts out 10 units of air as each component of air drained into the base of ceiling.

In every second, each 10-inch table fan can flow up to 5.28 gallons of air. It means that in every minute, 40 cubic feet of air can be moved.

The bladeless fan offers a lot of advantages for homeowners. The first advantage is due to the smooth airstream produced by the fan. It is different from that of bladed fans which create annoying buffering. Moreover, the bladeless ceiling fan is easy to clean as it does not have blades.

In conventional fan, blades and their cages are hard to clean as they are coated with airborne dirt and dust. However some buyers find this fan expensive. There are also complaints about the noise when it is set in maximum speed.

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