front shutter door butterfly Cone fan

Our company is the professional manufacturer of butterfly cone fan in China. 1.This fan adopts advanced frontward open system,butterfly type,with two semicircle shutter doors,wind resistance is small,good air-tightness and high efficiency. 2.For the cone part,adopt new design,plug-type connection,not need many bolts and nuts for tightening as before,intensity of labor is reduced,also improve aesthetic results of fan. 3.The belt tensioner device made of aluminum-magnesium alloy,non-deforming,long service life.This device make the belt inside tight up,effective for avoiding the belt distortions in reverse direction,so prolong the belt life time,saving cost. 4.When hte two semicircle shutter doors close,the rubber sealing ring make good airtightness.In different condition,not run all the fan,the air could pass through the space of stop fan,use this type fan,could avoid this problem.Ensure air pass through the evaporative cooling pads or air inlet only,so that greatly improve teh fan efficiency,(as compared with different type of same size fan,improve efficiency 15-20%) 5.The fan motor installed on the top left corner,effective protection of the motor.Avoid wind resistance.And the motor panel connection is reasonable,fixing fan frame more stronger. Butterfly cone fan technical parameter: Butterfly cone fan specifications size: Butterfly cone fan air flow curve: Photos from different directions: