BTU Pmax 125N 设备介绍 中文-0511 - 第33页
Static Pressure – 数字 静压 Wha t i s S t at i c Pr e ss ur e ? Ø Stat i c p res sur e i s dev elo ped wit hi n t he bl ower pl enum to pr oduc e t r ue f or ced convection • 什么是静压 ? – 静压 是 通过风扇加压在加热器内部产生一个大于整个炉堂的压力 . 通过压力差将…
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Static Pressure – 数字静压
What is Static Pressure?
Ø Static pressure is developed within the blower plenum to produce true forced
convection
• 什么是静压?
– 静压是通过风扇加压在加热器内部产生一个大于整个炉堂的压力. 通过压力差将加热后的气体均匀吹到产
品上，因此产生真正的 均匀热风对流。
Why is Static Pressure important?
Ø Static pressure directly relates to the amount of heat transfer an oven can
deliver
Ø Greater the static pressure, greater the heat transferred to the product
Ø Static pressure ensures uniform convection from the plenum to the product
为什么静压重要?
– 静压关系到炉子的加热性能
– 较高的静压使更多的热量传递到产品
– 静压能确保比较一致的对流气体从孔板传递到产品
Peak Temperature versus Static Pressure
Conveyor Speed = 45 IPM - Temperature Constant
180
190
200
210
220
1 5 9 13 17 21 25 29 33 37 41 45 49 53 57
Time in Seconds
Temperature Deg. C
S. P. = 1.5 IWC
S. P. = 1.1 IWC
S.P. = 0.8 IWC
LOW <0.8 IWC
数字静压对峰温与熔锡时间的影响