Bladeless Fan

What Is A Bladeless Fan?
A bladeless fan, as the name suggests, has no visible blades and emits air from within a ring-like hollow.

There are basically two types of bladeless fans: Elongated-Oval Bladeless Fan and the Spherical Bladeless Fan. While the Elongated-Oval Bladeless Fan features a slightly elongated hollow, like a tower, the Spherical Bladeless Fan is spherical in shape, like the image above.

A bladeless fan has blades hidden in the base. It is based on the air-multiplier technology and can generate an impressive airflow within the room.
The compressor in the base of the fan draws in air and directs it towards the ring. Then the air is pushed out through 16-mm slits. The end result – smooth, unhindered stream of air!

Power Consumption Of A Bladeless Fan:
Bladeless fans work on a simple mechanism – to suck in air and push it out. Hence, they do not consume a large amount of electricity and are energy efficient. So, you won’t have to worry about your mounting electricity costs!

Benefits Of A Bladeless Fan Over Standard Fans:
Bladeless fan is the newest trend in the fan industry. It is very powerful as it multiplies the air flow coming out, thus, offering much better cooling. A bladeless fan has many advantages over conventional fans.

  • Since it is devoid of external blades, it is safer than a conventional ceiling or table fan as there is no fear of cutting yourself with it.
  • The hollow tube of the fan makes it easier to clean. While the blades of a conventional fan collect dust easily, it is not the case with a bladeless fan.
  • It can be controlled by a remote. So, you don’t need to adjust the speed of the fan manually every time.
  • It is significantly lighter than a conventional fan. Thus, it can be moved from one place to another very easily.
  • The blades of a conventional fan first chop the air before it reaches you, thus, causing buffeting. There is no issue of buffeting with a bladeless fan since it has no blades.
  • It is appealing to look at. Sleek and elegant, these fans have a unique design that can blend in very well with the furniture in your room.

How Does A Bladeless Fan Work?
A bladeless fan works on a very simple technology, as mentioned above, the air-multiplying technology.

It consists of a brushless electric motor along with nine asymmetrically-aligned blades attached to a rotor. The frame is slightly sloped at an angle that its curvature can create more pressure. As the air continues to flow, the surrounding air is rapidly sucked, or “entrained”, into the mechanism, creating a stronger airflow. This is how a bladeless fan multiplies the flow of air. It is known to amplify the airflow up to 15 times as compared to a regular fan. James Dyson was the man behind this groundbreaking concept.

Let’s look at the steps in more detail:

The brushless motor draws in up to 27 litres of air per second. The technology used in the fan is similar to that of a turbocharger and jet engines, combined. Thus, it generates a very powerful stream of airflow.

As the air continues to flow in, it gets accelerated through an annular aperture. Passing over a 16° airfoil-shaped ramp, the air is channeled into the hollow ring.

The air flows inside the hollow ring in a circular motion and is pushed through small 16mm slits.

The surrounding air is rapidly drawn in and this process is known as entrainment. The resultant airflow is stronger than a regular fan as it is amplified up to 15 times.

Who Invented The Bladeless Fan?
The Bladeless Fan was first presented before the world by James Dyson in October 2009. It was then called the Dyson Air Multiplier.

Though the concept was first given by the Japanese company, Toshiba, in 1981, James Dyson improved upon the design and technology to give us the Dyson Air Multiplier. The feature which sets the Dyson Air Multiplier apart from its Japanese counterpart is the ‘Coanda surface’- an aerofoil ramp over which the air is pushed out of the hollow ring. The Coanda surface is slightly angled (16 degree), which rapidly draws in the surrounding air into the air flow, thereby emitting a powerful but smooth stream of air.

Cooling Of A Bladeless Fan:

The best thing about bladeless fans is that they are very quiet. Rooting on the air-multiplier technology, these fans draw in a large amount of air and amplify it to a great extent. So, you can imagine how awesome these fans are at cooling. Not only do they consume less power, but they happen to be very powerful machines with added perks of mobility and safety. They have been crafted in a way that significantly reduces the turbulence in the airflow through streamlined paths, thus, giving out a powerful and smooth jet of air.

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