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    • 5. 发明授权
    • Apparatus and method to optimize fume containment by a hood
    • 通过罩优化烟雾容纳的装置和方法
    • US6131463A
    • 2000-10-17
    • US918408
    • 1997-08-26
    • Robert H. Morris
    • Robert H. Morris
    • F24F7/00F24F11/04G01L7/00
    • F24F11/043F24F2007/001F24F2011/0042
    • A system for optimizing the flow of air through a fume hood by dynamically controlling the air flow to provide a stable vortex in the vortex chamber of the hood, the optimum condition for minimizing backflow of fume-laden air through the hood doorway. A highly-sensitive pressure sensor disposed at a critical location in the vortex chamber sidewall senses minute variations in vortex pressure indicative of turbulence and sends signals via a transducer to an analog controller which uses proportional integral and adaptive gain algorithms to formulate output signals to an actuator which adjusts dampers in the hood to change the airflow into the vortex. The system operates in feedback mode and seeks a minimum in the amplitude of the sidewall pressure variations, indicating that turbulence has been eliminated and that a stable vortex exists. The pressure sensor signals can also be directed to an alarm to signal an off-standard and potentially dangerous condition.
    • 通过动态地控制空气流量以在发动机罩的涡流室中提供稳定的涡流来优化通过通风橱的空气流的系统,这是使通过发动机罩门口的含烟空气回流最小化的最佳条件。 设置在涡流室侧壁的关键位置的高灵敏度的压力传感器感测到指示湍流的涡流压力的微小变化,并且经由换能器将信号发送到模拟控制器,该模拟控制器使用比例积分和自适应增益算法来将输出信号配置到致动器 其调节罩中的阻尼器以将气流改变成涡流。 该系统在反馈模式下工作,并且寻求侧壁压力变化幅度的最小值,表明湍流已被消除并且存在稳定的涡流。 压力传感器信号也可以被引导到报警器来发出标准的和潜在的危险的状况。
    • 6. 发明授权
    • Rotary actuator
    • 旋转执行机构
    • US4134306A
    • 1979-01-16
    • US724962
    • 1976-09-20
    • Gunnar GrotnessCharles S. SmithRobert H. MorrisPeter W. Boyer
    • Gunnar GrotnessCharles S. SmithRobert H. MorrisPeter W. Boyer
    • F01B19/00F15B15/08F16H19/04
    • F15B15/065F01B19/00Y10T74/18088
    • A rotary actuator for converting reciprocating motion to rotary motion including a housing having spaced-apart end plates connected by guide rods. A bellows is provided having opposite sides one of which is connected to one of the end plates, the bellows being adapted to be connected to a source of fluid under pressure so that the bellows expands from a collapsed to an expanded position. A guide plate is provided movably mounted on the guide rods with the other bellows side being connected thereto. A rack and pinion assembly is provided mounted on the other end plate, the rack being connected to the guide plate so that expansion and contraction of the bellows causes linear movement of the rack thereby imparting rotary movement to the pinion. A spring acts between the guide plate and the other end plate thus resisting expansion of the bellows and returning it to the collapsed position upon the release of fluid pressure. Adjustable stops are provided for limiting rotational movement of the pinion between predetermined first and second angularly spaced positions.
    • 用于将往复运动转换成旋转运动的旋转致动器,包括具有通过导杆连接的间隔开的端板的壳体。 一个波纹管被设置成具有相对的侧面,其中一个连接到一个端板,波纹管适于在压力下连接到流体源,使得波纹管从折叠膨胀到膨胀位置。 引导板可移动地安装在引导杆上,另一个波纹管侧与其连接。 提供安装在另一端板上的齿条和小齿轮组件,齿条连接到引导板,使得波纹管的膨胀和收缩导致齿条的线性运动,从而向小齿轮提供旋转运动。 弹簧作用在导板和另一端板之间,从而抵抗波纹管的膨胀并且在释放流体压力时将其返回到收缩位置。 提供可调止动件用于限制小齿轮在预定的第一和第二角度间隔位置之间的旋转运动。
    • 7. 发明授权
    • Apparatus and method to optimize fume containment by a hood
    • 通过罩优化烟雾容纳的装置和方法
    • US5697838A
    • 1997-12-16
    • US658033
    • 1996-06-04
    • Robert H. Morris
    • Robert H. Morris
    • B08B15/02F24F7/00F24F11/04
    • F24F11/043B08B15/023F24F2007/001
    • A system for optimizing the flow of air through a fume hood by dynamically controlling the air flow to provide a stable vortex in the vortex chamber of the hood, the optimum condition for minimizing backflow of fume-laden air through the hood doorway. A highly-sensitive pressure sensor disposed at a critical location in the vortex chamber sidewall senses minute variations in vortex pressure indicative of turbulence and sends signals via a transducer to an analog controller which uses proportional integral and adaptive gain algorithms to formulate output signals to an actuator which adjusts dampers in the hood to change the airflow into the vortex. The system operates in feedback mode and seeks a minimum in the amplitude of the sidewall pressure variations, indicating that turbulence has been eliminated and that a stable vortex exists. The pressure sensor signals can also be directed to an alarm to signal an off-standard and potentially dangerous condition.
    • 通过动态地控制空气流量以在发动机罩的涡流室中提供稳定的涡流来优化通过通风橱的空气流的系统,这是使通过发动机罩门口的含烟空气回流最小化的最佳条件。 设置在涡流室侧壁的关键位置的高灵敏度的压力传感器感测到指示湍流的涡流压力的微小变化,并且经由换能器将信号发送到模拟控制器,该模拟控制器使用比例积分和自适应增益算法来将输出信号配置到致动器 其调节罩中的阻尼器以将气流改变成涡流。 该系统在反馈模式下工作,并且寻求侧壁压力变化幅度的最小值,表明湍流已被消除并且存在稳定的涡流。 压力传感器信号也可以被引导到报警器来表示标准的和潜在的危险的状况。
    • 9. 发明授权
    • Fume hood having a bi-stable vortex
    • 具有双稳态涡流的通风柜
    • US5924920A
    • 1999-07-20
    • US7422
    • 1998-01-15
    • Robert A. DeLucaRobert H. Morris
    • Robert A. DeLucaRobert H. Morris
    • B08B15/02
    • B08B15/023
    • The flow of air through a fume hood is optimized by producing a bi-stable vortex within the vortex chamber of the fume hood regardless of sash movement. A bi-stable fume hood optimizes capture face velocity to minimize backflow of fume laden air through the hood sash opening. This bi-stable vortex fume hood reduces the energy consumption up to sixty percent versus the present day mono-stable vortex fume hoods. The bi-stable vortex fume hood utilizes a vortex pressure control system to reposition top, center, and bottom slot openings of a baffle in the hood. This baffle moves the bi-stable vortex away from the fact when the sash is fully opened and creates a clearing action near the work surface as the sash is closed. The fume hood's airfoil is placed inside the fume hood chamber and the airfoil has multiple entry pattern, one of which turns the vortex up and away from the open sash window. The other creates flow which washes the work surface of the hood. The interior portion of the vortex chamber utilizes a turning vane in order to decrease dynamic losses and increase bi-stable vortex stability.
    • 通过通风柜的空气流动通过在通风橱的涡流室内产生双稳态涡流而优化,而不管窗扇运动如何。 双稳态通风橱优化捕获面速度,以最大限度地减少吸烟烟气回流通过罩带窗口。 这种双稳态涡流通风机与目前的单稳态涡街通风机相比,能耗降低了百分之六十。 双稳态涡流罩采用涡流压力控制系统来重新定位罩中挡板的顶部,中心和底部槽口。 当挡板完全打开时,这个挡板将双稳态涡流移动离开事实,当窗扇关闭时,会在工作表面附近产生清除动作。 通风柜的翼型放置在通风橱室内,翼型具有多个入口模式,其中一个将涡流向上旋转并远离开放的窗框。 另一个产生洗涤罩的工作表面的流动。 涡流室的内部使用转动叶片,以减少动态损耗并增加双稳态涡流稳定性。