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    • 4. 发明申请
    • SENSOR FOR DETECTING BUBBLES IN A LIQUID FLOWING THROUGH A FLOW PATH
    • 用于检测通过流动路径流动的液体中的泡沫的传感器
    • WO2010100611A1
    • 2010-09-10
    • PCT/IB2010/050910
    • 2010-03-03
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.HAARTSEN, Jacob, R.DEKKER, Ronald
    • HAARTSEN, Jacob, R.DEKKER, Ronald
    • A61M5/142G01F1/74
    • G01F1/74A61M5/16886A61M5/365A61M2205/3368G01F1/688
    • The invention relates to a sensor (102, 202, 402, 502) for detecting bubbles in gas phase present in a liquid (208, 408, 527) flowing through a flow path (204, 406, 508). The sensor comprises a heating element (106, 210) for heating the liquid, which heating element is provided with a predetermined level of power at least during detecting, and a transducer arrangement (108, 112, 212) arranged for generating a measurement signal (114) indicative for the temperature of the heating element. The sensor furthermore comprises a comparator arrangement (116) for comparing a measurement value of the measurement signal with a predetermined threshold level, which predetermined threshold level corresponds to a reference temperature attainable by the heating element in response to said predetermined level of power and a minimum velocity attainable by the liquid in the flow path. Based on the latter comparison, the comparator arrangement generates an output signal (118) indicative for a possible presence of bubbles in gas phase.
    • 本发明涉及一种用于检测存在于流过流路(204,406,508)的液体(208,408,527)中的气相中的气泡的传感器(102,202,402,502)。 传感器包括用于加热液体的加热元件(106,210),所述加热元件至少在检测期间被提供有预定水平的功率;以及换能器布置(108,112,212),其布置成用于产生测量信号 114),其指示加热元件的温度。 该传感器还包括比较器装置(116),用于将测量信号的测量值与预定阈值电平进行比较,该预定阈值电平响应于所述预定功率水平而对应于由加热元件可达到的参考温度,并且最小值 通过流路中的液体可获得的速度。 基于后一种比较,比较器装置产生指示气相中可能存在气泡的输出信号(118)。