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    • 11. 发明授权
    • Positive air pressure isolation system
    • 正气压隔离系统
    • US08087980B2
    • 2012-01-03
    • US12603107
    • 2009-10-21
    • David W. Palmer
    • David W. Palmer
    • F24F7/00B01D50/00
    • F24F3/166A61L9/20B01L1/04F24F3/1603F24F11/30F24F11/77F24F2003/1667F24F2011/0004F24F2110/00F24F2110/32F24F2110/40
    • An air-pressure-control system, the system comprising a system inlet, a system outlet, and a variable-speed fan configured to operate at a speed. A motor controller in communication with the fan is configured to control the speed of the fan. A differential-pressure transducer configured to monitor an air pressure at the system inlet and an air pressure at the system outlet. A closed-loop pressure controller in communication with the motor controller and differential-pressure transducer, wherein the pressure controller is configured to vary the speed of the fan based on the pressure differential between the inlet and outlet of the system, thereby controlling a pressure within a space. An ultraviolet kill chamber may be disposed between the inlet and outlet to expose airborne particulate to UV radiation. The system may also have a filter located within an air-flow path between the system inlet and system outlet.
    • 一种气压控制系统,该系统包括被配置为以一定速度操作的系统入口,系统出口和变速风扇。 与风扇通信的电机控制器被配置为控制风扇的速度。 差压传感器被配置为监测系统入口处的空气压力和系统出口处的空气压力。 与电动机控制器和差压传感器通信的闭环压力控制器,其中压力控制器被配置为基于系统的入口和出口之间的压力差来改变风扇的速度,从而控制风扇内部的压力 一个空间 紫外杀菌室可以设置在入口和出口之间,以将空气中的颗粒暴露于紫外线辐射。 系统还可以具有位于系统入口和系统出口之间的空气流动路径内的过滤器。
    • 15. 发明授权
    • System for controlling flow through a process region
    • 用于控制通过过程区域的流量的系统
    • US5450873A
    • 1995-09-19
    • US141498
    • 1993-10-22
    • David W. Palmer
    • David W. Palmer
    • B08B15/02B65H59/06B65H59/16F24F3/16F24F11/75F24F13/12F24F13/14G05D7/00G05D7/01G05D7/06G05D16/10G05D16/20
    • B08B15/023B65H59/06B65H59/16F24F11/047F24F13/12F24F13/14F24F13/1426F24F3/161G05D16/04G05D16/106G05D16/2086F24F2011/0042F24F2013/1433F24F2013/146F24F2013/1466F24F2221/26Y10S137/907Y10T137/2572Y10T137/4259Y10T137/7788Y10T137/7791Y10T137/87676
    • A regulator for maintaining a constant partial vacuum in a region, such as in a piece of process equipment or a fume hood. The regulator includes a path, through which fluid passes from the region to the vacuum source, and a movably mounted piston having a frontal face, which is exposed to fluid in the path, and a distal face, which is exposed to a reference pressure, such as the pressure of the environment in which the equipment is located. The piston is disposed in the path so that the piston may constrict the path at a constriction point. Fluid in the path upstream of the constriction point exerts a pressure on the frontal face of the piston that tends widen the path at the constriction point. The piston is mounted so that the weight of the piston exerts a force on the piston in a direction that tends to widen the path at the constriction point. A force is exerted on the piston, preferably by a spring under compression, in a direction that tends to narrow the path at the constriction point. A buffering gas, introduced to the area between the piston's skirt and the piston mounting structure, may be used to keep noxious fumes from backing up into the environment and/or to provide an efficient bearing.
    • 用于在区域中保持恒定部分真空的调节器,例如在一个工艺设备或通风橱中。 调节器包括流体从该区域传递到真空源的路径,以及可移动地安装的活塞,其具有暴露于路径中的流体的正面和暴露于参考压力的远端面, 例如设备所在环境的压力。 活塞设置在路径中,使得活塞可以在收缩点处收缩路径。 在收缩点上游的路径中的流体在活塞的正面上施加压力,其倾向于使收缩点处的路径变宽。 活塞被安装成使得活塞的重量在趋向于使收缩点处的路径变宽的方向上对活塞施加力。 优选地,通过在压缩下的弹簧,在趋向于缩窄收缩点处的路径的方向上将力施加在活塞上。 引入到活塞裙部和活塞安装结构之间的区域的缓冲气体可用于保持有害烟气不能备份到环境中和/或提供有效的轴承。
    • 19. 发明申请
    • Positive air pressure isolation system
    • 正气压隔离系统
    • US20070275651A1
    • 2007-11-29
    • US11805776
    • 2007-05-24
    • David W. Palmer
    • David W. Palmer
    • B01L1/04F24F11/00
    • F24F3/166A61L9/20B01L1/04F24F3/1603F24F11/30F24F11/77F24F2003/1667F24F2011/0004F24F2110/00F24F2110/32F24F2110/40
    • An air-pressure-control system, the system comprising a system inlet, a system outlet, and a variable-speed fan configured to operate at a speed. A motor controller in communication with the fan is configured to control the speed of the fan. A differential-pressure transducer configured to monitor an air pressure at the system inlet and an air pressure at the system outlet. A closed-loop pressure controller in communication with the motor controller and differential-pressure transducer, wherein the pressure controller is configured to vary the speed of the fan based on the pressure differential between the inlet and outlet of the system, thereby controlling a pressure within a space. An ultraviolet kill chamber may be disposed between the inlet and outlet to expose airborne particulate to UV radiation. The system may also have a filter located within an air-flow path between the system inlet and system outlet.
    • 一种气压控制系统,该系统包括被配置为以一定速度操作的系统入口,系统出口和变速风扇。 与风扇通信的电机控制器被配置为控制风扇的速度。 差压传感器被配置为监测系统入口处的空气压力和系统出口处的空气压力。 与电动机控制器和差压传感器通信的闭环压力控制器,其中压力控制器被配置为基于系统的入口和出口之间的压力差来改变风扇的速度,从而控制风扇内部的压力 一个空间 紫外杀菌室可以设置在入口和出口之间,以将空气中的颗粒暴露于紫外线辐射。 系统还可以具有位于系统入口和系统出口之间的空气流动路径内的过滤器。