Bladeless fans are a very recent entry in the market and they are not very famous in the masses mostly because people do not know anything at all about them. The concept of the bladeless fans was introduced in the year of 1981 by the Japanese multinational conglomerate Toshiba. The company came up with the concept of a bladeless fan. When they came up with the idea the people in foreign countries and the inventor world was curious as to how will the fan work without the blades.
The fan was unveiled by Sir James Dawson in the year 2009 who called his invention the air multiplier because of its capacity to multiply the air it takes in from the base and emits from the hoop like structure. The fan does have a controversy on who is the pioneer in the field. The US patent records show Sir James Dawson where as there are records which show Toshiba coming up with the concept very much earlier but that is another debate totally.
Since the bladeless fans are the new entity in the market thus there are many questions which need to be answered to get the people to know them better. These new pieces of technology are really efficient and they work by sucking air from their base and from there this sucked in air is pushed upwards by asymmetrically bladed fan and this air passes through the set of stationary placed blades. These very blades smooth the airflow before it is ready to emerge out and d its job. The fan also uses the principles of fluid dynamics. By the principle of inducement and entrainment the air sticks to the curvy surface and is ejected from the very thin slit of the hoop in the fan and is multiplied nearly 15 times the original volume entering.
The product also has very low energy consumption. That only adds to its efficiency along with the air multiplication factor. The energy consumption of the few bladeless fans is as follows:
- Dyson air multiplier (AM01): the fan has a pretty low consumption rate of electricity. It consumes 2-3 watts on lowest settings, 13-14 watts on medium settings and 31 watts on the highest setting and an added 2 watts for oscillations. The data was take at a voltage of 120 volts.
- Dyson hot + cold fan heater: the device does both the work in winter it works as a cool heater and in summers it can be used as a desk fan (actually it can provide the cooling only equivalent to a desk fan). The device takes a minimum of 9 watts in its lower setting while a power of 18 watt in the higher setting. The device is designed to be efficient.
- Dyson AM05 hot cool bladeless fan: the device has a maximum consumption capacity of 40 watts which is even less than a light bulb. The device uses an extra 2 watts on the heating mode.
These devices are good and efficient and easy to handle. The fans are portable and easy to clean and sturdy. The only drawback in the machine is that these are really expensive to be purchased by a common man.
Atomberg along with companies like Orient and Havells has tried and released products with very low energy consumption and in the upcoming time the company Atomberg might launch one of its own energy efficient bladeless fans along with energy efficient fan which are already available.