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    • 1. 发明授权
    • Gas mixer with a plurality of ejectors for a medical respirator
    • 具有用于医用呼吸器的多个喷射器的气体混合器
    • US06830048B2
    • 2004-12-14
    • US10306698
    • 2002-11-27
    • Norbert WruckRainer KunzThomas RossenJoachim Schröter
    • Norbert WruckRainer KunzThomas RossenJoachim Schröter
    • G05B100
    • B01F3/026A61M16/12A61M16/127B01F15/0201B01F2215/0034
    • A device and a process for mixing at least a first gas component with a second gas component is suitable for mixing gases in a portable respirator. The gas mixer device makes it possible to bring about the particularly necessary concentration of the first gas component at different volume flows of the gas mixture generated. The gas mixer device has a plurality of ejectors (1, 2) of different sizes, which are designed according to the principle of a venturi nozzle. The ejectors have respective propellant gas connections (3, 9) for feeding the first gas component from a propellant gas container (4) and suction channels (5, 10) for feeding the second gas component from a mixing chamber (6), as well as gas outlets (8, 11) to a respiration connection (7). An evaluating and control unit (17) evaluates the signals of two volume flow sensors (15, 16) and correspondingly actuates proportional valves (13, 14) arranged in the propellant gas connections (3, 9) for feeding the first gas component. For small respiration flows, the proportional valve (13) in the propellant gas connection (3) for the smaller ejector (1) is actuated by the evaluating and control unit (17) for opening, the proportional valve (14) in the propellant gas connection (9) for the larger ejector (2) is actuated for opening in the case of medium respiration flows, and both proportional valves (13, 14) are actuated by the evaluating and control unit (17) for opening for high respiration flows.
    • 用于将至少第一气体组分与第二气体组分混合的装置和方法适用于在便携式呼吸器中混合气体。 气体混合装置使得可以在产生的气体混合物的不同体积流量下产生特别必要的第一气体组分的浓度。 气体混合装置具有根据文丘里喷嘴原理设计的多个不同尺寸的喷射器(1,2)。 喷射器具有用于从推进剂气体容器(4)供应第一气体组分的相应的推进剂气体连接(3,9)和用于从混合室(6)进料第二气体组分的抽吸通道(5,10) 作为气体出口(8,11)到呼吸连接(7)。 评估和控制单元(17)评估两个体积流量传感器(15,16)的信号,并相应地驱动布置在推进剂气体连接(3,9)中的比例阀(13,14),用于供给第一气体组分。 对于小的呼吸流量,用于较小喷射器(1)的推进剂气体连接(3)中的比例阀(13)由用于打开的评估和控制单元(17)致动,推进剂气体中的比例阀(14) 在较大喷射器(2)的连接(9)在介质呼吸流动的情况下被致动以打开,并且两个比例阀(13,14)由用于高呼吸流量打开的评估和控制单元(17)致动。
    • 4. 发明授权
    • Device for mixing anesthetic vapor with anesthetic gas
    • 麻醉气体与麻醉气体混合的装置
    • US07481215B2
    • 2009-01-27
    • US11190313
    • 2005-07-27
    • Thomas RossenKarl-Ludwig GippertMichael HeidschmidtJürgen MüllerRainer Kunz
    • Thomas RossenKarl-Ludwig GippertMichael HeidschmidtJürgen MüllerRainer Kunz
    • A61M15/00A61M16/10
    • A61M16/18A61M2205/70
    • An anesthetic evaporator with a pressure control circuit has a differential pressure pick-up (18) can be calibrated in a simple manner. A switchover device (20) is provided according to the present invention at a bypass gap (3), which is designed to connect the gas inlet (4) directly with the gas outlet (5) via a first bypass line (23) and to bridge over the bypass gap (3) via a second bypass line (26) connected to a ventilation duct (27) in a first switching position. The gas flow from the gas inlet (4) to the gas outlet (5) is established via the bypass line (2) in a second switching position. The calibration of the differential pressure pick-up (18) with the pneumatic connections (16, 17) is performed in the first switching position of the switchover means (20) via the ventilation duct (27), which is open toward the ambient atmosphere.
    • 具有压力控制电路的麻醉蒸发器具有差压检测器(18),可以以简单的方式进行校准。 根据本发明的切换装置(20)设置有旁通间隙(3),其被设计成经由第一旁通管线(23)将气体入口(4)直接与气体​​出口(5)连接,并且 通过连接到第一切换位置的通风管道(27)的第二旁路管线(26)跨越旁路间隙(3)。 在第二切换位置通过旁路管线(2)建立从气体入口(4)到气体出口(5)的气流。 利用气动连接(16,17)对差压检测器(18)进行校准,是在切换装置(20)的第一切换位置经由向周围大气开放的通风管道(27)进行的 。
    • 5. 发明申请
    • Device for mixing anesthetic vapor with anesthetic gas
    • 麻醉气体与麻醉气体混合的装置
    • US20060090750A1
    • 2006-05-04
    • US11190313
    • 2005-07-27
    • Thomas RossenKarl-Ludwig GippertMichael HeidschmidtJurgen MullerRainer Kunz
    • Thomas RossenKarl-Ludwig GippertMichael HeidschmidtJurgen MullerRainer Kunz
    • A61M11/00
    • A61M16/18A61M2205/70
    • An anesthetic evaporator with a pressure control circuit has a differential pressure pick-up (18) can be calibrated in a simple manner. A switchover device (20) is provided according to the present invention at a bypass gap (3), which is designed to connect the gas inlet (4) directly with the gas outlet (5) via a first bypass line (23) and to bridge over the bypass gap (3) via a second bypass line (26) connected to a ventilation duct (27) in a first switching position. The gas flow from the gas inlet (4) to the gas outlet (5) is established via the bypass line (2) in a second switching position. The calibration of the differential pressure pick-up (18) with the pneumatic connections (16, 17) is performed in the first switching position of the switchover means (20) via the ventilation duct (27), which is open toward the ambient atmosphere.
    • 具有压力控制电路的麻醉蒸发器具有差压检测器(18),可以以简单的方式进行校准。 根据本发明的切换装置(20)设置有旁通间隙(3),其被设计成经由第一旁通管线(23)将气体入口(4)直接与气体​​出口(5)连接,并且 通过连接到第一切换位置的通风管道(27)的第二旁路管线(26)跨越旁路间隙(3)。 在第二切换位置通过旁路管线(2)建立从气体入口(4)到气体出口(5)的气流。 利用气动连接(16,17)对差压检测器(18)进行校准,是在切换装置(20)的第一切换位置经由向周围大气开放的通风管道(27)进行的 。