Bladeless DC fans are fans that utilize a DC speed-regulated motor to control the speed of the fan by adjusting the voltage to adjust the air speed and volume. This type of fan does not have the blades of a traditional fan, but instead generates airflow by flowing air through a cavity inside the center of the fan, making the airflow relatively more stable and comfortable.

Advantages of bladeless DC fans include:

1. Bladeless design: there are no blades as in conventional fans, thus reducing the risk of injury to humans, especially children and pets.

2. Quiet effect: due to the absence of blades, bladeless DC fans are relatively quiet and do not cause much disturbance to the surroundings.

3. Easy to clean: Since there are no blades, bladeless DC fans are very easy to clean, just wipe them with a damp cloth.

4. Safe and reliable: Bladeless DC fan adopts DC speed-regulated motor, which runs stably and does not produce sparks or electromagnetic radiation, so it is very safe and reliable.

5. Energy-saving and environmental protection: Bladeless DC fan adopts DC speed-regulated motor, which can adjust the wind speed and air volume according to the need, so as to achieve energy-saving and environmental protection effect.

The disadvantages of bladeless DC fans include:

1. higher price: due to the advanced technology and materials used in bladeless DC fans, the price is relatively high.

2. Smaller airflow: Due to the lack of blades, the airflow of a bladeless DC fan is relatively small and cannot be compared to that of a traditional fan.

3. Higher noise level: Although the noise level of bladeless DC fans is relatively low, the noise may still cause some disturbance to the surrounding environment when running at high speed.