What Is a Bladeless Fan?

The leafless fan is also called an air doubler. It can produce a natural and continuous cool wind. Because there is no blade, it will not cover the dust or hurt the fingers inserted by children. Even more amazing is its peculiar shape, which is both streamlined and refreshing. Inspired by the air blade hand dryer. The principle of the hand dryer is to force the air through a small mouth to "brush" the water on the dry hand. The air doubler lets the air blow out from a 1.3 mm wide cut that rotates around the ring. Because air is forced to blow out of this circle, the amount of air passing can be increased by 15 times, and the speed can be increased up to 35 km / h. Leafless fans were first introduced in the UK on October 12, 2009. The second generation was launched in Hong Kong in February 2011. Leafless fans can be divided into desktop leafless fans and ceiling leafless fans (leafless ceiling fan lights).

Leafless fans are inspired by air blade hand dryers. Air blade
The biggest difference of leafless fans is that it has no "leaf" of traditional fans. Bladeless fans utilize jet aircraft engines and
In terms of production technology, compared with traditional fans, fanless electric fans mainly increase the design, manufacturing and assembly of the inner cavity of the air outlet frame, and the cost increase is not very obvious, especially the formation of a certain scale of assembly line production Later, you don't need to worry about the scarcity of raw materials that will cause the price to be too high, nor will it increase the manufacturing difficulty because of overly complicated and tedious processes, nor will the product quality decrease due to structural design changes. The structure of the leafless fan is a touch-type tilt with its own gravity as the center fulcrum, and the angle of the fan can be changed by hand pressure; therefore, the leafless fan is superior to the traditional leaf fan in many aspects.
1. Safety: The traditional fan uses blades to cut the wind, which easily cuts children's fingers and hides certain dangers. Fanless fan has no blade rotation, high safety factor and no danger.
2. Environmental protection: using imported ABS material, passed
1. Traditional fans use blades. Although there is a cover, there are still hidden dangers. Bladeless fan has no blade rotation and high safety factor.
2. The traditional fan has a fierce wind feeling, which is unstable and uncomfortable. The bladeless fan is optimized for smoothness and comfort through air doubling technology.
3. Traditional fans are not easy to clean. Bladeless fans have no blades. They do not need to be disassembled and cleaned. Wipe with a cotton cloth. (The internal motor of the leafless fan still needs to be removed and cleaned).
4.Bladeless fan than most traditional fans
1. The wind is more stable and achieves stepless speed change, which is greatly different from the gradation wind of traditional fans.
2. The wind is soft like natural wind.
3, compact, no blade will not cover the dust, very easy to clean.
4, safe without leaf fan, will not hurt the fingers of curious children.
5. Natural cool breeze and clean air.
6. Safe and stylish.
1. Single function, same as traditional fan. In contrast, the noise is louder than ordinary rotary blade fans when the air volume is large.
2. The chassis is too thin, and it is easy to fall when you touch it. (Expanded as described in 1)
3, the price is higher, and there is a large gap with ordinary electric fans.
4. From the perspective of energy, the air inlet and outlet of the bladeless fan have increased the resistance of air flow compared to the traditional fan, and its conversion efficiency is necessarily higher than that of the traditional fan, that is to say, it has the same air volume. The power consumption of leafless fans will be higher than traditional fans.
In February 2011, Dyson, a British home appliance manufacturer, launched a second generation of leafless fans in Hong Kong after launching a generation of leafless fans. Compared to the first generation, its product performance and characteristics have not changed much. It adds a wireless remote control that can be directly magnetically attached to the top of the fan, and has been fine-tuned in terms of the body and the air outlet. The price is HKD $ 3,999, which is a bit high. In September 2011, the leafless fan was successfully introduced into the mainland of China. On the basis of the original, it has added 180 ° rotation and blowing hot and cold air. Domestic leafless fans sell for around 3000-6000. The three generations of leafless fans have largely changed the shape and become more fashionable.
In 2016, a company launched a derivative of a leafless fan-
1. For those who pay attention to the taste of life, a leafless fan with excellent health and comfort is the first choice;
2. In the early summer, late autumn, and evening, use a leafless fan to cool down and not catch a cold;
3. The elderly, children, pregnant women, patients, etc., who cannot blow air conditioners;
4. Schools, kindergartens, children's amusement parks, etc., places of safety first;
5. As a summer welfare item, each unit is distributed to the unit's employees;
6, as a promotional product of their own products, to their customers;
7, units, families as crafts, replacing traditional electric fans;
8. Personal as a gift.
1. Judging the quality of plastic parts
For the appearance color of leafless fans, it is best to choose white as the main color. It must be injection molded white, not oil-injected white. You can judge by observing whether the colors inside and outside the product are consistent when buying. Because white products must be produced with raw materials, and spray-painted products can be produced with second-hand materials (waste), and then sprayed with colors to cover the poor quality of plastic products. Most of the more than 100 leafless fans on the market are spray-painted. You can check this. This method can also be used to purchase other pigment products. Plastic materials are about twice as expensive as used materials.
2. Determine if it is a brushless motor or a brushed motor
Check if there is black powder on the edge of the air gap. Pay attention to whether it is black. If there is black powder on the edge, it means that the manufacturer uses a carbon brush motor to produce a leafless fan, and a carbon brushless leaf fan is running. During the process, the carbon brush is constantly worn, and black powder is blown out. The life of this brush motor is generally below 2000 hours, which means that if you use it for 10 hours a day, the motor will be scrapped within half a year. The true leafless fan should use a brushless motor. The brushless motor needs a digital control chip to drive, and there is no life limit. If you can disassemble the machine to check, products without drive boards (not control boards for switching, adjusting wind speed, remote head, etc.) must use brushed motors. The real leafless fan has a relatively large driver board and a function control board such as a switch. Brushless motors are about twice as expensive as brushed motors. Moreover, the price of a sine wave drive board of a brushless motor is about 50 yuan, which means that the light motor and the drive board are about 70 yuan more expensive than a brushed one [3]
Voltage: 110V / 220V
Current: 0.3A
Frequency: 50HZ / 60HZ
Input power: 50W Output power: 45W
Rotation angle: 90 °
Tilt angle: 10 °
Power cord length: 1.5m
Air intake: 30L / S
Air output: 450L / S
Placement: Table fan
Speed regulation: stepless speed change
Switch Type: Rotary Switch
Material: Plastic ABS [2]

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