Glass blower in the design, it is more cumbersome, require increased attention in the design to ensure it will be able to use that in each case, in fact, in everyday use, we will find that it still has a lot of design is imperfect the following, we will look at it together. After a lot of air backflow device FRP fan is not set to prevent downtime or fiberglass dust after the fan is switched off the valve can not be reliably closed, a large shop for hot heat loss can not be underestimated. We often see dust FRP fans and axial fans free backstop device, the fan rotates at high speed in the hot action, explain this phenomenon caused considerable hot wind speed, wind speed inside the duct up to 0 ~ 3.0m / s or more. Reverse fan motor starts at a disadvantage, may be due to the starting current excessive damage. FRP fan anti-condensation poor performance, winter indoor and outdoor temperature difference, the hairdryer is easy to condensation dripping phenomenon produce, as well as affecting the normal production. Dust glass blower must have reliable rain, snow and the basic properties of anti-wind, but a lot of dust in the design of FRP fan function when considering only the rain, snow and sand ignoring not only into the fan from the top, in the outdoor the case the wind speed reaches a certain intensity, but also may enter the fan from the bottom. Some make use of internal activities Venetian glass blower air dust backstop device looks to prevent snow falling in the room, in fact, snow gathered on the activities of blinds, room temperature after thawing can cause dripping phenomenon, can not play against snow effect. In areas prone to typhoons and storms, dust resistant, fiberglass wind turbine capacity is poor, high center of gravity, the plane and concave structure increases wind resistance, anti-rain hat umbrella strong winds extremely unsatisfactory performance. Some dust glass blower's safety is not well that is not set firm and reliable safety net in the lower fan, decorative vents alone can not guarantee shedding when the motor is off and the fan does not fall wounding fracture. 

palabras clave: FRP fans, FRP fans, FRP fan,