First of all, we must clarify the fan without blades of Dyson, yes it has blades, only that in reality, these are not visible and are located at the base of it. An excellent way to destroy magic, right from the beginning. At its bottom, the fan of Dyson Ltd (a British technology company founded by James Dyson in 1993) has an engine. Said engine takes air and sends it upwards towards a tube arranged in the upper part of the base.
The official Dyson site offers this and many other products. As for the fan, this site includes something as well as:
“Without blades. Soft and refreshing air. Instead of blades that interrupt the flow of air, Dyson fans use Air Multiplier ™ technology. They infuse the air from the rear and side areas of the machine using the induction and dragging processes. Dyson engineers demonstrated this by using dozens of fans and a helium balloon. “
How does a Dyson Bladeless fan work?
The air taken from below goes up and runs through the cylinder and then out through a slot located at the back of it. This tiny slot (approximately 1 mm), is directed forward, where the wind flow starts to come out. It is clear that the fan does not work only with this but that specific laws of physics help the fan to work correctly. One of the slogans is that it sends the air about 15 times faster than it takes to take it.
To fulfill this slogan, the fan relies on a simple concept: when the air comes out through the tiny groove creates a small vacuum, this vacuum causes the philosophy behind the fan to be sucked towards the center of the fan and then forward. In addition to this, and because it is a fan that generates an emission of the same size of the circle, unlike the fans with blades that send air for each blade, it collects a more considerable amount of air.
Dyson’s bladeless fan provides a smooth but steady flow of air, much like a breeze. Its appearance is very futuristic, very different from the traditional ones both in design and operation.
Although it is promoted as a fan without blades, the truth is that it has blades inside. They are just very well hidden inside the pedestal. Place where the fan absorbs up to 5.28 gallons of air per second, almost as much as a vacuum cleaner.
In addition to the blades located in the pedestal holder, this fan has a brushless electric motor that rotates the nine blades aligned asymmetrically. This allows providing precise control of fan speed while remaining silent compared to conventional fans. The pedestal motor also adds a pulse to the flowing air and shoots it towards the fan ring part.
Then, the air flows through the channel in the pedestal through a curved path and leaves small 16 mm slots around the fan frame. You may think that this causes the air to expand in the shape of the surface area of a cylinder. But thanks to the physical laws of induction and drag, this allows the air to come out from the regions around the fan. In other words, a small region of low pressure is created that attracts the air from behind. It is thus causing a push and extraction of fresh air, constant and uniform.
Types of fans without blades
As with conventional fans, there are several types of fans without blades currently marketed. Between them we have:
This fan is mighty, capable of creating a continuous and uninterrupted airflow. It comes with features such as shutdown timer, touch controls, remote control, and is capable of cooling a full-size room.
This fan comes in half the size of the tower fan. It also has features such as speed controls or angle settings and automatic shutdown. But even though the cost of this fan is somewhat high, it can offer adequate cooling silently.
Its height is similar to that of the table fan, it offers the same characteristics as the others, but its design is a bit different.