進口風機需要更加的處理

發(fā)布人：http://m.hwzxw.net   發(fā)布時間：2018-04-12 17:17:47

（1）風壓

(1) wind pressure

進口風機選型時，切忌風壓過大或過分小。若風壓過大，簡單致使風機的電機功率加大的，風機在運行時會致使功率加大，全部通風體系的耗能增多，氣流流場簡單遭受損壞。但若風機的風壓太小，則簡單致使風量缺乏，通風排氣排煙無力，終究致使實踐工況需求無法完成。而電機也會由于長時間處于低負荷工作而出現(xiàn)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）風量

(2) air volume

任何工況所需風量都是有必定規(guī)模的?？偟膩碚f，假如風機直徑必定，進風口的空氣密度也堅持恒定，那么其轉速改動，就會影響風量。所以假如要保障風機圓形，有必要要確保轉速安穩(wěn)。

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）留意風機的體系阻力

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

進口風機在制作前都要首要核算其阻力值，尤其是進口風機進出口相互連接的部件，它們的阻力值將直接與氣流的均勻特性相聯(lián)系。一般來說，進口風機的實踐阻力是要比測定值大的。因此，在規(guī)劃時，要盡量削減不合理的阻力值。

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）選型主次要分清

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

假如實踐工況需求的風機是以大功率為主，那么要重視和；假如功率不大，但風量需求高，那么就需要留意挑選性的選型。更值得一提的是，假如業(yè)主需求風機既要，又要，那較好要在風機功能曲線的較率點鄰近尋找到適宜的工況點。

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.