Flow sensor having first and second temperature detecting portions for
accurate measuring of a flow rate and a manufacturing method thereof
    1.
    发明授权
    Flow sensor having first and second temperature detecting portions for accurate measuring of a flow rate and a manufacturing method thereof 失效
    具有用于精确测量流量的第一和第二温度检测部分的流量传感器及其制造方法

    公开(公告)号:US5763775A

    公开(公告)日:1998-06-09

    申请号:US815529

    申请日:1997-03-12

    IPC分类号: G01F1/684 G01F1/692 G01F1/68

    摘要: A flow sensor eliminates turbulence of fluid flow due to a structure of the temperature detecting portion so that a temperature of the temperature detecting portions does not fluctuate due to the turbulence of the fluid. The flow sensor is formed on a substrate. Each of a first temperature detecting portion and a second temperature detecting portion has a heating function and a temperature detecting function, and are arranged along a direction of flow of the fluid. A supporting portion is formed on the substrate for supporting the first and second temperature detecting portions thereon. The supporting portion does not have a side surface facing substantially in the direction of flow of the fluid. A side surface of the supporting portion is protected by a guard portion formed along the side surface.

    摘要翻译: 流量传感器消除了由于温度检测部分的结构引起的流体流动的紊乱,使得温度检测部分的温度由于流体的紊流而不会波动。 流量传感器形成在基板上。 第一温度检测部和第二温度检测部都具有加热功能和温度检测功能,沿着流体的流动方向配置。 支撑部分形成在基板上,用于支撑第一和第二温度检测部分。 支撑部分不具有基本上在流体流动方向上的侧表面。 支撑部分的侧表面由沿着侧面形成的防护部分保护。

    Flow sensor having an intermediate heater between two
temperature-sensing heating portions
    5.
    发明授权
    Flow sensor having an intermediate heater between two temperature-sensing heating portions 失效
    流量传感器在两个感温加热部分之间具有中间加热器

    公开(公告)号:US5852239A

    公开(公告)日:1998-12-22

    申请号:US873455

    申请日:1997-06-12

    IPC分类号: G01F1/684 G01F1/68

    CPC分类号: G01F1/6845

    摘要: A flow sensor includes a first heating portion, provided at a first position in a flow of a fluid, which heats the fluid and outputs a voltage in response to a temperature of the first position. A second heating portion, provided at a second, downstream position in the flow of the fluid, heats the fluid and outputs a voltage in response to a temperature of the second position, the first position and the second position being spaced from each other in a direction parallel to the flow of the fluid. An intermediate heater, provided between the first heating portion and the second heating portion, heats the fluid at an intermediate position between the first position and the second position.

    摘要翻译: 流量传感器包括设置在流体流中的第一位置处的第一加热部分,其加热流体并响应于第一位置的温度输出电压。 设置在流体流中的第二下游位置的第二加热部分加热流体并输出响应于第二位置的温度的电压,第一位置和第二位置彼此间隔开 方向平行于流体的流动。 设置在第一加热部分和第二加热部分之间的中间加热器在第一位置和第二位置之间的中间位置处加热流体。