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    • 7. 发明授权
    • Heat-sensitive type flow rate detecting element and holder therefor
    • 热敏型流量检测元件及其支架
    • US06615655B1
    • 2003-09-09
    • US10031148
    • 2002-01-17
    • Yuichi SakaiAkira YamashitaMotohisa TaguchiTomoya YamakawaMasahiro KawaiKazuhiko Tsutsumi
    • Yuichi SakaiAkira YamashitaMotohisa TaguchiTomoya YamakawaMasahiro KawaiKazuhiko Tsutsumi
    • G01F168
    • G01F1/692G01F1/6845
    • A flow rate detecting element measuring the flow rates of various fluids, particularly the intake air of an internal combustion engine. The flow rate detecting element has a thin film layer including a support film and a protective film on one surface of a flat substrate, a heating resistance section and a comparative resistance section thermosensitive resistor having patterns and located between the support film and the protective film. The flat substrate has a recess which penetrates the flat substrate in the thickness direction thereof and facing the heating resistance section and the comparative resistance section. A fluid flow passage communicates with the recess which faces the comparative resistance section for fluid flow into the recess. Flow rate or velocity of a fluid can be measured accurately using the heating resistance section according to the fluid temperature reported by the comparative resistance section.
    • 流量检测元件,其测量各种流体的流量,特别是内燃机的进气。 流量检测元件具有在平坦基板的一个表面上包括支撑膜和保护膜的薄膜层,具有图案并位于支撑膜和保护膜之间的加热电阻部分和比较电阻部分热敏电阻器。 平面基板具有在其平坦基板的厚度方向上贯通平板状基板的面向加热电阻部和比较电阻部的凹部。 流体流动通道与面向比较电阻部分的凹部连通,以使流体流入凹部。 可以使用根据比较电阻部报告的流体温度的加热电阻部分精确地测量流体的流速或速度。