公开(公告)号：US06557574B2

公开(公告)日：2003-05-06

申请号：US09825468

申请日：2001-04-02

申请人： Clifford C. Federspiel

发明人： Clifford C. Federspiel

IPC分类号： F17D301

CPC分类号： G01F1/40 ,  F24F11/74 ,  F24F2110/30 ,  F24F2221/26 ,  Y10T137/0379 ,  Y10T137/7761 ,  Y10T137/8326

摘要： A differential pressure based flow rate measurement device is provided which is coupled to surfaces of a blade 30 within a damper assembly 10, such as that provided within a variable air volume (VAV) box or within a liquid valve assembly. A blade 30 which includes a leading surface 32 opposite a trailing surface 34 is fitted with a sensing structure 50. The sensing structure 50 includes portions 52, 54 which extend away from the leading surface 32. Sensing holes 56 pass into a hollow interior of the sensing structure 50 and pass on to a pressure sensor 60. A similar sensing structure 50 is also provided extending from the trailing surface 34 which also has sensing holes 56 located therein. The sensing holes 56 coupled to the trailing surface 34 also lead to the pressure sensor 60 so that a differential pressure between the sensing holes 56 on either sides of the blade 30 can be measured. The sensing holes 56 preferably extend in a non-perpendicular orientation with the sensing holes 56 on the leading side of the blade 30 facing at least partially upstream. The sensing holes 56 are effectively positioned for all different orientations of the blade 30 between horizontal/totally open and vertical/totally closed. A position transducer 45 is provided which monitors the orientation of the blade 30. Information relating to the orientation of the blade 30 and the pressure differential between the sensing holes 56 on opposite sides of the blade 30 are utilized together to calculate the flow rate of the air/gas passing through the damper assembly 10.

公开(公告)号：US06371162B1

公开(公告)日：2002-04-16

申请号：US09553579

申请日：2000-04-20

申请人： Floris J. Groeneveld

发明人： Floris J. Groeneveld

IPC分类号： F17D301

CPC分类号： F16K31/046 ,  F16K37/0083 ,  G05B2219/2236 ,  G05B2219/25312 ,  Y10T137/86461 ,  Y10T137/87917

摘要： An electro-mechanical actuator for operating a fluid control valve and controlling the operation of one or more field instruments, including other valve actuators. An electro-mechanical actuator has a drive unit and an electric motor driving the drive unit to open and close a fluid control valve to the fully opened and fully closed states under the control of monitoring limit open and limit closed sensors. Auxiliary control output lines connected to other field instruments from the electro-mechanical actuator drive associated fluid control valves to fully open and fully closed states. Limit open sensors and limit closed sensors monitor the valve open and closed state of the other respective field instruments and through a respective pair of auxiliary travel input lines to the electro-mechanical control the field instrument.

摘要翻译： 一种用于操作流体控制阀并控制一个或多个现场仪器（包括其它阀致动器）的操作的机电致动器。 机电致动器具有驱动单元和电动机驱动驱动单元，以在监控限位开启和限位闭合传感器的控制下将流体控制阀打开和关闭到完全打开和完全关闭状态。 辅助控制输出线路连接到其他现场仪器，从机电执行器驱动相关的流体控制阀到完全打开和完全关闭状态。 限制开启传感器并限制闭合传感器监控其他各自现场仪表的阀门打开和关闭状态，并通过相应的一对辅助行驶输入线将机械控制现场仪表。