厨房所在位置距离居民区必须大于20米以上，厨房所在建筑物高度低于15米时，出风口必须置于该建筑物顶部，如果厨房所在建筑物高度高于15米且厨房位置在15米以上的，排烟风口高度应高于厨房所在位置。
The location of the kitchen must be more than 20 meters away from the residential area. When the height of the building where the kitchen is located is less than 15 meters, the air outlet must be placed on the top of the building. If the height of the building where the kitchen is located is more than 15 meters and the kitchen is more than 15 meters, the height of the smoke exhaust outlet should be higher than the location of the kitchen.
集气罩距离地面高度不小于1.9米不大于2.3米，距离地面过低厨师会碰头，过高不利于集气罩收集油烟，集气罩的长度和宽度都应该超过设备100mm，也就是说集气罩要完全能覆盖设备。
The height of the gas collection hood from the ground should not be less than 1.9 meters and not more than 2.3 meters. If it is too low from the ground, the chef may encounter it. If it is too high, it is not conducive to the collection hood collecting oil fumes. The length and width of the gas collection hood should exceed 100mm of the equipment, which means that the gas collection hood should fully cover the equipment.
设计排风管道的走向时要避开消防管道空调管道，一旦与其冲突，后期安装会很麻烦。设尽量减少风管弯头和变径，出现弯头时角度在90度以内，直线管道的排风效果是佳的。
When designing the direction of the exhaust duct, it is important to avoid fire and air conditioning ducts. Once in conflict with them, installation in the later stages can be very troublesome. When designing, minimize the number of air duct bends and diameter changes as much as possible. When elbows occur, the angle should be within 90 degrees, and the exhaust effect of straight pipes is the best.
油烟净化器的风量一般要比排烟风机稍大一些。于对应油烟净化器和排烟风机风量选择可对应生产厂家的参数表，正规合格的生产厂家参照表大同小异。
The air volume of the oil fume purifier is generally slightly larger than that of the smoke exhaust fan. As for the selection of corresponding oil fume purifier and smoke exhaust fan air volume, it can correspond to the parameter table of the manufacturer, and the formal and qualified manufacturers can refer to the table with similar differences.
风机与风管连接时，在风机进风口和出风口两倍叶轮直径长度范围内都不能有弯头，如果出现弯头，进风口可能会造成风机性能异常，出风口可能会引起管道阻力增加，导致风机发风量下降。
When connecting the fan to the air duct, there should be no bends within the length range of twice the impeller diameter of the fan inlet and outlet. If there are bends, the inlet may cause abnormal performance of the fan, and the outlet may cause an increase in pipeline resistance, leading to a decrease in fan air output.
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