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11 条记录 (耗时 0.02 秒)

    FLOW SENSOR
    4.
    发明申请
    FLOW SENSOR 有权
    流量传感器

    公开(公告)号：US20090250059A1

    公开(公告)日：2009-10-08

    申请号：US12099588

    申请日：2008-04-08

    申请人： Todd W. Allum ,  Malcom R. Williams ,  Joseph Cipollone

    发明人： Todd W. Allum ,  Malcom R. Williams ,  Joseph Cipollone

    IPC分类号： A61M16/00

    CPC分类号： A61B5/087 ,  A61B5/0876 ,  A61M16/0051 ,  A61M16/0057 ,  A61M16/021 ,  A61M16/04 ,  A61M16/0816 ,  A61M16/0833 ,  A61M16/0866 ,  A61M2016/0021 ,  A61M2016/0027 ,  A61M2016/0036 ,  A61M2205/42 ,  G01F1/36 ,  G01F1/40 ,  G01F1/50 ,  G01F15/00

    摘要： A bi-directional flow sensor is adapted for reducing pneumatic noise during pressure sensing with a flow passing through the flow sensor. The flow sensor comprises a hollow, tubular member having a throat section disposed between a ventilator end and a patient end. A flow restrictor is disposed in the throat section and is adapted to measure differential pressure in the flow. A baffle is mounted at the ventilator end and is adapted to minimize non-axial flow at pressure taps located on opposing ends of the flow restrictor. The patient end includes a flow obstruction configured to promote uniform velocity across the flow at the pressure taps during exhalation flow from the patient end to the ventilator end. The flow sensor minimizes pneumatic noise to less than 0.1 LPM to allow accurate patient flow measurement and triggering of inhalation and exhalation phases at flow rates of 0.2 LPM.

    摘要翻译： 双向流量传感器适用于通过流量传感器流动的压力感测中减少气动噪声。 流量传感器包括中空的管状构件，其具有设置在通气机端和患者端之间的喉部。 流量限制器设置在喉部中并且适于测量流动中的压差。 挡板安装在通风机端部，并且适于使位于限流器的相对端部处的压力抽头处的非轴向流动最小化。 患者端包括流动障碍物，其构造成在从患者端到呼吸机终端的呼气流动期间促使穿过压力抽头处的流动的均匀速度。 流量传感器可将气动噪声降至小于0.1 LPM，以便精确的患者流量测量，并以0.2 LPM的流速触发吸入和呼气阶段。

    Flow sensor
    7.
    发明授权
    Flow sensor 有权
    流量传感器

    公开(公告)号：US08888711B2

    公开(公告)日：2014-11-18

    申请号：US12099588

    申请日：2008-04-08

    申请人： Todd W. Allum ,  Malcolm R. Williams ,  Joseph Cipollone

    发明人： Todd W. Allum ,  Malcolm R. Williams ,  Joseph Cipollone

    IPC分类号： A61B5/08 ,  G01F1/36 ,  G01F1/40 ,  G01F15/00 ,  G01F1/50 ,  A61M16/00

    CPC分类号： A61B5/087 ,  A61B5/0876 ,  A61M16/0051 ,  A61M16/0057 ,  A61M16/021 ,  A61M16/04 ,  A61M16/0816 ,  A61M16/0833 ,  A61M16/0866 ,  A61M2016/0021 ,  A61M2016/0027 ,  A61M2016/0036 ,  A61M2205/42 ,  G01F1/36 ,  G01F1/40 ,  G01F1/50 ,  G01F15/00

    摘要： A bi-directional flow sensor is adapted for reducing pneumatic noise during pressure sensing with a flow passing through the flow sensor. The flow sensor comprises a hollow, tubular member having a throat section disposed between a ventilator end and a patient end. A flow restrictor is disposed in the throat section and is adapted to measure differential pressure in the flow. A baffle is mounted at the ventilator end and is adapted to minimize non-axial flow at pressure taps located on opposing ends of the flow restrictor. The patient end includes a flow obstruction configured to promote uniform velocity across the flow at the pressure taps during exhalation flow from the patient end to the ventilator end. The flow sensor minimizes pneumatic noise to less than 0.1 LPM to allow accurate patient flow measurement and triggering of inhalation and exhalation phases at flow rates of 0.2 LPM.

    摘要翻译： 双向流量传感器适用于通过流量传感器流动的压力感测中减少气动噪声。 流量传感器包括中空的管状构件，其具有设置在通气机端和患者端之间的喉部。 流量限制器设置在喉部中并且适于测量流动中的压差。 挡板安装在通风机端部，并且适于使位于限流器的相对端部处的压力抽头处的非轴向流动最小化。 患者端包括流动障碍物，其构造成在从患者端到呼吸机终端的呼气流动期间促使穿过压力抽头处的流动的均匀速度。 流量传感器可将气动噪声降至小于0.1 LPM，以便精确的患者流量测量，并以0.2 LPM的流速触发吸入和呼气阶段。

    Roots-type blower rotor alignment apparatus
    10.
    发明授权
    Roots-type blower rotor alignment apparatus 有权
    罗茨式鼓风机转子对准装置

    公开(公告)号：US08479379B2

    公开(公告)日：2013-07-09

    申请号：US12263769

    申请日：2008-11-03

    申请人： Todd W. Allum ,  Edgardo F. Marcello ,  Stephen C. Hanson

    发明人： Todd W. Allum ,  Edgardo F. Marcello ,  Stephen C. Hanson

    IPC分类号： B23P21/00 ,  F01C21/00

    CPC分类号： B23P19/10 ,  F04C18/126 ,  F04C29/0035 ,  F04C2230/603 ,  F04C2240/81 ,  Y10T29/49236 ,  Y10T29/49771 ,  Y10T29/49776 ,  Y10T29/49895 ,  Y10T29/49902 ,  Y10T29/53022 ,  Y10T29/53039 ,  Y10T29/53061 ,  Y10T29/53978

    摘要： Roots-type blowers with helical cycloidal rotors exhibit variation in leakback flow with angular position intrinsic to these rotor geometries. Calibration of individual blowers using a combination of high-resolution alignment and enhanced detection of residual noise phenomena permits noise in as-produced blowers to be significantly attenuated. Intrinsic lower limits of noise induced by leakback variation are associated with manufacturing tolerances, necessary clearances, and particular geometric considerations. Gross alignment errors (excluding contact between rotors) produce a characteristic noise pulse rate that is three times the shaft rate. Proper alignment suppresses this and reveals a pulse sequence at double this rate and at about half of the amplitude of faulty alignment. The novel process explains the error mechanisms and defines repeatable calibration methods for a mass-production environment, introducing appropriate gauges and methods for the task.

    摘要翻译： 具有螺旋摆线转子的罗茨式鼓风机在这些转子几何形状固有的角位置上表现出回流的变化。 使用高分辨率对准和增强的残留噪声现象的组合的单个鼓风机的校准允许产生的鼓风机中的噪声被显着衰减。 由回漏变化引起的噪声的固有下限与制造公差，必要的间隙和特定的几何考虑相关联。 总体对准误差（不包括转子之间的接触）产生的特征噪声脉冲速率是轴速率的三倍。 正确的对准抑制了这一点，并且以两倍的速率显示脉冲序列，并且大约是有缺陷对准的幅度的一半。 该新颖的过程解释了错误机制，并为大规模生产环境定义了可重复的校准方法，为该任务引入了适当的量规和方法。