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发明公开
CN105782090A 一种降噪减涡轴流风机 无效 - 撤回

一种降噪减涡轴流风机
摘要：
本发明公开了一种降噪减涡轴流风机，包括驱动电机、叶轮、风筒和支架，叶轮上分布有叶片，叶片在叶轮周向上的分布角度α按下式确定：α=β+5.66sinβ，其中β为假设叶片等距分布时的分布角度；所述的叶片在后缘处靠近轮毂和风筒处各打有若干个孔。本发明主要是在风机效率、风机噪声以及产品使用寿命这三个角度做了设计，改进之后的有益效果有：（1）提高轴流风机的效率；（2）降低风机运行的噪声；（3）改善风机内部流场的流动状况，减少漩涡的产生（4）减少风机振动，延长风机的使用寿命。
摘要（英）：

The invention discloses a noise-lowering and vortex-reducing axial flow fan. The noise-lowering and vortex-reducing axial flow fan comprises a drive motor, an impeller, an air drum and supports; blades are distributed on the impeller, and the distribution angle alpha of the blades in the peripheral direction of the impeller is equal to beta plus 5.66 sinebeta, wherein beta is the distribution angle formed when the blades are assumed to be distributed at equal intervals; a plurality of holes are formed in the parts, close to the hub and the air drum, of the rear edges of the blades. Through the design improvements of the fan efficiency, the fan noise and the service life, the noise-lowering and vortex-reducing axial flow fan has the beneficial effects that the efficiency is improved, the operation noise is lowered, the flowing condition of an inner flow field of the fan is improved, vortexes are reduced, vibration of the fan is reduced, and the service life of the fan is prolonged after the improvements.

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