公开(公告)号：US09298192B2

公开(公告)日：2016-03-29

申请号：US13887113

申请日：2013-05-03

Applicant: ABB TECHNOLOGY OY

Inventor： Jussi Tamminen ,  Jero Ahola ,  Tero Ahonen ,  Simo Hammo

IPC: G05D7/06 ,  F24F11/00 ,  F04D27/00 ,  F24F13/02

CPC classification number: G05D7/0629 ,  F04D27/004 ,  F24F11/0001 ,  F24F11/77 ,  F24F13/02 ,  Y02B30/746

Abstract: A method includes selecting the branch of a ventilation system with the greatest pressure loss, opening a control valve in the selected branch and closing control valves in all other branches, controlling a fan to produce the desired air flow rate into the selected branch by using fan characteristic shaft power to air flow rate curves, and a shaft power estimate from the frequency converter and by adjusting the rotational speed of an electric motor to achieve the desired air flow rate, calculating the fan pressure corresponding to the desired air flow rate from fan characteristic fan pressure to air flow rate curves, saving the calculated fan pressure as a reference pressure, and adjusting the control valves in each of the remaining branches so that the desired air flow rate to each branch is delivered while the fan is controlled by the frequency converter to produce the reference pressure.

Abstract translation: 一种方法包括选择具有最大压力损失的通风系统的分支，打开所选分支中的控制阀并关闭所有其他分支中的关闭控制阀，控制风扇以通过使用风扇产生所选择的分支中的期望空气流量 特征轴功率对空气流量曲线，以及来自变频器的轴功率估计，并通过调节电动机的转速来实现所需的空气流量，从风扇特性计算对应于期望空气流量的风扇压力 风扇对空气流量曲线的压力，将计算的风扇压力保存为参考压力，并调整每个剩余支路中的控制阀，使得在风扇由变频器控制的同时传送到每个分支的期望空气流量 产生参考压力。