Portable Bladeless Fan Handheld Usb Rechargeable Mini With 3 Fan Speed Level Des Portable Bladeless Fan Handheld USB Rechargeable Mini Cooler No Leaf Handy Cooling Fan With 3 Fan Speed Level Desktop Airflow|Fans Product introduction: The bladeless fan was first invented by the British scientist Dyson, the inventor of the steam cleaner. Because of its unique working principle, this fan has got rid of the fan blade this section, has innovated the fan modelling, simultaneously has LED the fan profession the new tide It was listed as one of the ten world inventions in the 2009. The bladeless fan looks like a huge ring, unique shape, streamlined and refreshing appearance, giving people an incomparable visual effect. The most wonderful thing is that it does not have any blades, but also produces strong cool air. It is more easy to operate and more humanized in design. Bladeless fan design is novel and fashionable, because there is no blade, less resistance, less noise, no pollution emission, so it is safer, more environmentally friendly, more energy saving Working principle: The electric motor in the base makes the air inhale the inner of the fan base, and the air flow speed is increased by about 16 times after the acceleration of the cyclone, and the air is driven by the fan head through the inner lip of the fan head of the vaneless fan, and it is blown out at the speed of 405 liters per second. The air multiplier vane fan is also equipped with variable frequency wind speed adjustment device. It is convenient for users to adjust the wind speed according to the actual situation, increase the air volume evenly, not impact voltage, low energy consumption, and half energy consumption of ordinary fan. In addition, since the fan does not have fan blades, it is not harmful to children full of curiosity, and it is easier to clean than ordinary air conditioners and fans. It uses the latest fluid power engineering technology to increase the air flow by 15 times through an effi