People in long-term operation or use "220V Cooling Fan" in the process, the product of human health will not cause adverse effects. It also must be considered in the design. First, the general fan set high, medium and low wind speed, the user can choose when to use the appropriate speed, not because of the wind but does not impact on the body. People use "220V Cooling Fan" in the process, the body can be in a natural state, the action or gesture can be used in people naturally, within the normal range of physical activities, so people will not prematurely fatigue. Wind direction automatic adjustment unit time can be controlled within an acceptable amount of wind, making use of experience more details, humane. The cover can be rotated demolition sites and then can "220V Cooling Fan" to clean the blades but also greatly reduces the complexity of labor, greatly improving efficiency.