双门式喇叭抽风扇、蝴蝶门喇叭扇的的专业生产厂家
1、采用先进前置双门打开机构，风阻小、密闭好、效率高；
2、拢风筒采用插结式连接机构，避免了繁琐的螺栓螺母紧固，减少工人劳动强度，提高风机美观度；
3、铝镁合金材质的皮带自动涨紧装置，不变性、使用寿命长，并采用皮带内侧涨紧，有效避免皮带反向扭曲，大大延长皮带使用寿命；
4、风机双门关闭时加有橡胶密封装置，当多台风机根据环境情况不同时启动时，有效避免室外空气从其他停止风机进入，大大提高风机工作效率，确保空气有湿帘或通风窗进入（与同尺寸风机相比，提高效率15-20%）；
5、电机安装风机左上角，有效保护电机的同时，不但避免电机对扇叶的风阻，而且电机底板的连接使风机外框更加牢固；
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.
