"Mini Air Cooling Fan" principle, the exhaust fan is rotated by the fan, the formation of the indoor air and exhaust gases, or the inhalation of indoor and outdoor air, forming a convection air change in a particular region. This "Mini Air Cooling Fan" machine includes a rotating flow chamber, air straw, motor and impeller flow straw. Technical characteristics, the use of the air impeller to tell, through the rotation of the turbine chamber is formed to generate suction airflow, and the other end of the swirl chamber by soot excluded smoke suction to achieve the purpose. This "Mini Air Cooling Fan", after opening will have a huge attraction, for safety reasons, be sure to install a good safety net, doing debugging, to avoid accidents.