进口风机需要更加的处理

发布人：   发布时间：2018-04-12 17:17:47

（1）风压

(1) wind pressure

进口风机选型时，切忌风压过大或过分小。若风压过大，简单致使风机的电机功率加大的，风机在运行时会致使功率加大，全部通风体系的耗能增多，气流流场简单遭受损坏。但若风机的风压太小，则简单致使风量缺乏，通风排气排烟无力，终究致使实践工况需求无法完成。而电机也会由于长时间处于低负荷工作而出现其他故障。

When importing fan selection, avoid excessive or too small wind pressure. If the wind pressure is too large and the motor power of the fan is increased simply, the power of the fan will increase, the energy consumption of all ventilation system increases, and the flow field of the air flow is simply damaged. However, if the wind pressure of the fan is too small, it will lead to a lack of air volume, ventilation and exhaust smoke, which will eventually result in the failure of the practical working condition. The motor will also cause other failures due to long hours of low load operation.

（2）风量

(2) air volume

任何工况所需风量都是有必定规模的。总的来说，假如风机直径必定，进风口的空气密度也坚持恒定，那么其转速改动，就会影响风量。所以假如要保障风机圆形，有必要要确保转速安稳。

The air volume required for any working condition is of a certain scale. In general, if the diameter of the fan is fixed, the air density of the inlet will also keep constant. The change of the speed will affect the air volume. So if we want to ensure that the fan energy saving circle, it is necessary to ensure that the speed is stable.

（3）留意风机的体系阻力

(3) pay attention to the system resistance of the fan

进口风机在制作前都要首要核算其阻力值，尤其是进口风机进出口相互连接的部件，它们的阻力值将直接与气流的均匀特性相联系。一般来说，进口风机的实践阻力是要比测定值大的。因此，在规划时，要尽量削减不合理的阻力值。

The resistance value of the imported fan should be calculated first, especially the connecting parts of the import and export of the imported fan. The resistance value of the imported fan will be directly related to the uniform characteristics of the air flow. Generally speaking, the practical resistance of imported fans is larger than the measured value. Therefore, in planning, we should try to reduce unreasonable resistance values.

（4）选型主次要分清

(4) the primary and secondary selection of type selection should be divided

假如实践工况需求的风机是以大功率为主，那么要重视和；假如功率不大，但风量需求高，那么就需要留意挑选性的选型。更值得一提的是，假如业主需求风机既要，又要，那较好要在风机功能曲线的较率点邻近寻找到适宜的工况点。

If the demand for the practical working conditions is based on high power, it is necessary to pay attention to energy saving and efficiency. If the power is not large, but the demand for air volume is high, then we need to pay attention to selecting the type of high efficiency. It is also worth mentioning that if the owner needs the fan to be efficient and energy efficient, it is best to find the appropriate working conditions near the maximum efficiency point of the fan function curve.