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。

公开(公告)号：US20170016447A1

公开(公告)日：2017-01-19

申请号：US15210679

申请日：2016-07-14

Applicant: ABB Technology OY

Inventor： Antti Kosonen ,  Jero Ahola

IPC: F04C28/28 ,  G01R21/133 ,  F04C29/00 ,  F04C18/16 ,  F04C28/08

CPC classification number: F04C28/28 ,  F04C18/16 ,  F04C28/08 ,  F04C29/0085 ,  F04C2270/051 ,  F04C2270/18 ,  F04C2270/48 ,  F04C2270/80 ,  G01R21/133

Abstract: the screw compressor with a variable rotational speed of the screw compressor, the rotational speed of the screw compressor having a speed profile in which the rotational speed is changed stepwise such that between stepwise changes the rotational speed of the screw compressor is kept substantially constant for a time period, repeating the speed profile until the pressure of the pressure vessel reaches a set pressure value, determining pressure of the pressure vessel, power consumption of the screw compressor drive and mass flow rate during the pressurising when the rotational speed of the screw compressor is kept substantially constant, calculating energy efficiency of the screw compressor drive as a function of pressure of the pressure vessel and rotational speed of the screw compressor on the on the basis of the determined pressure of the pressure vessel and power consumption of the screw compressor drive.

Abstract translation: 具有螺杆式压缩机的可变转速的螺杆式压缩机，具有速度变化的螺杆式压缩机的旋转速度，其中转速逐步改变，使得螺旋式压缩机的转速逐步改变，对于 时间段，直到压力容器的压力达到设定压力值，确定压力容器的压力，螺杆式压缩机驱动的功率消耗和加压期间的质量流量，当螺杆式压缩机的转速为 基于压力容器的确定的压力和螺杆式压缩机驱动器的功率消耗，基于压力容器的压力和螺杆式压缩机的转速来计算螺杆式压缩机驱动器的能量效率。