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    Thermal flow rate measuring device
    11.
    再颁专利
    Thermal flow rate measuring device 有权
    热流量测量装置

    公开(公告)号：USRE42529E1

    公开(公告)日：2011-07-12

    申请号：US11143971

    申请日：2005-06-03

    申请人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama

    发明人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama

    IPC分类号： G01F1/68 ,  G01F5/00

    CPC分类号： G01F5/00 ,  G01F1/6842 ,  G01F15/12

    摘要： A thermal type flow rate measuring device can certainly prevent adhesion of water droplet onto a sensor element and thus achieve high reliability. The thermal type flow rate measuring device includes an auxiliary passage defined within a main passage for introducing a part of fluid flowing through the main passage, a sensor disposed within the auxiliary passage for detecting flow rate of the fluid and capturing means formed on an inner periphery of the auxiliary passage for capturing liquid contained in the fluid and transferring the captured liquid.

    摘要翻译： 热式流量测量装置肯定可以防止水滴粘附到传感器元件上，从而实现高可靠性。 热式流量测量装置包括：辅助通道，限定在主通道内用于引入流过主通道的流体的一部分;传感器，设置在辅助通道内，用于检测流体的流量;以及捕获装置，形成在内周 用于捕获包含在流体中的液体并传送捕获的液体。

    Thermal type flow rate measuring apparatus
    13.
    发明授权
    Thermal type flow rate measuring apparatus 有权

    公开(公告)号：US07104126B2

    公开(公告)日：2006-09-12

    申请号：US11187823

    申请日：2005-07-25

    申请人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama ,  Masamichi Yamada

    发明人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama ,  Masamichi Yamada

    IPC分类号： G01F1/68

    CPC分类号： G01F1/6845 ,  G01F1/6842 ,  G01F1/692 ,  G01F1/698 ,  G01F1/699

    摘要： A flow rate sensor has a problem that a resistance value of a heat generating resistor itself varies and sensor characteristics are changed during use of the sensor for a long term. Also, the temperature of the heat generating resistor must be adjusted on a circuit substrate with a resistance constituting one side of a fixed temperature difference control circuit, and this has been one of factors pushing up the production cost. All resistances used for fixed temperature difference control are formed on the same substrate as temperature sensitive resistors of the same material. This enables all the resistances for the fixed temperature difference control to be exposed to the same environmental conditions. Hence, even when the resistances change over time, the changes over time occur substantially at the same tendency. Since the resistances for the fixed temperature difference control change over time essentially at the same rate, a resulting output error is very small.

    Thermal type flow measuring device
    15.
    发明授权
    Thermal type flow measuring device 有权
    热式流量测量装置

    公开(公告)号：US06935172B2

    公开(公告)日：2005-08-30

    申请号：US10486563

    申请日：2001-08-14

    申请人： Junichi Horie ,  Izumi Watanabe ,  Shinya Igarashi ,  Keiichi Nakada ,  Kei Ueyama

    发明人： Junichi Horie ,  Izumi Watanabe ,  Shinya Igarashi ,  Keiichi Nakada ,  Kei Ueyama

    IPC分类号： G01F1/684 ,  G01F1/698 ,  G01F1/68

    CPC分类号： G01F1/698 ,  G01F1/6845

    摘要： A thermal type flow measuring device comprises a heating resistor(HF), a temperature measuring resistor(Ru) upstream of the heating resistor(HF) with respect to a fluid(Q), and a temperature measuring resistor(Rd) downstream of the heating resistor(HF). A heat sensitive resistance element(CF), the upstream temperature measuring resistor(Ru) and the downstream temperature measuring resistor(Rd) form a first bridge circuit, and this first bridge circuit and the heating resistor(HF) form a second bridge circuit. Feedback control means(OP1, Tr) heat the heating resistor(HF) in accordance with an output for keeping a balance of the second bridge circuit. The distance between the heat sensitive resistance element(CF) and the heating resistor(HF) is larger than the distance between the upstream temperature measuring resistor(Ru) or the downstream temperature sensitive resistor(Rd) and the heating resistor(HF) so that the heat sensitive resistance element(CF) is positioned to receive less thermal influences from the heating resistor(HF) than the upstream temperature measuring resistor(Ru) and the downstream temperature sensitive resistor(Rd). The upstream temperature measuring resistor or the downstream temperature measuring resistor is heated by the heating resistor, and the flow rate of the fluid is measured based on an output for keeping a balance of the first bridge circuit.

    摘要翻译： 热式流量测量装置包括加热电阻器（HF），相对于流体（Q）的加热电阻器（HF）上游的温度测量电阻器（Ru）和加热下游的温度测量电阻器（Rd） 电阻（HF）。 热敏电阻元件（CF），上游温度测量电阻器（Ru）和下游温度测量电阻器（Rd）形成第一桥接电路，该第一桥接电路和加热电阻器（HF）形成第二桥接电路。 反馈控制装置（OP 1，Tr）根据用于保持第二桥接电路的平衡的输出加热加热电阻器（HF）。 热敏电阻元件（CF）和加热电阻器（HF）之间的距离大于上游温度测量电阻器（Ru）或下游温度敏感电阻器（Rd）和加热电阻器（HF）之间的距离，使得 热敏电阻元件（CF）被定位成比上游温度测量电阻器（Ru）和下游温度敏感电阻器（Rd）更少地受到来自加热电阻器（HF）的热影响。 上游温度测量电阻器或下游温度测量电阻器被加热电阻器加热，并且基于用于保持第一桥接电路的平衡的输出来测量流体的流量。

    Air flow sensor
    16.
    发明授权
    Air flow sensor 有权
    气流传感器

    公开(公告)号：US06516785B1

    公开(公告)日：2003-02-11

    申请号：US09763967

    申请日：2001-02-28

    申请人： Keiichi Nakada ,  Izumi Watanabe ,  Hiroshi Yoneda ,  Kei Ueyama ,  Masamichi Yamada

    发明人： Keiichi Nakada ,  Izumi Watanabe ,  Hiroshi Yoneda ,  Kei Ueyama ,  Masamichi Yamada

    IPC分类号： G01F1692

    CPC分类号： G01F1/684 ,  F02D41/187 ,  G01F1/6842 ,  G01F1/6845 ,  G01F1/692 ,  G01F1/698 ,  G01F5/00 ,  H01L2224/48091 ,  H01L2224/8592 ,  H01L2924/19105 ,  H01L2924/00014

    摘要： In a thermal air flow sensor, an air flow measuring element and an intake air temperature sensing element of an intake air temperature sensor are mounted on a single support member so as to be positioned within an intake passage. The support member is made of a glass-ceramic material for example and is held by a holder secured to the wall of an intake pipe. The support member has a structure whereby both sides of a portion of the support member located on the side away from the intake pipe wall are easy to be taken away their heat by an air flow moving through the intake pipe. The air flow measuring element and the intake air temperature sensing element are disposed on such a heat-removed surface of the support member and are electrically connected respectively to conductors disposed on the support member, with their electric connections being sealed with resin, whereby the intake air temperature sensor and the air flow sensor can be rendered integral with each other.

    摘要翻译： 在热空气流量传感器中，进气温度传感器的气流测量元件和进气温度感测元件安装在单个支撑构件上，以便定位在进气通道内。 支撑构件例如由玻璃陶瓷材料制成，并由固定在进气管壁上的保持架保持。 支撑构件具有这样的结构，其中位于远离进气管壁的一侧的支撑构件的一部分的两侧容易被移动通过进气管的气流带走其热量。 气流测量元件和进气温度感测元件设置在支撑构件的这种除热表面上，并且分别电连接到设置在支撑构件上的导体，其电连接用树脂密封，由此进气 空气温度传感器和空气流量传感器可以彼此成为一体。

    Thermal type flow rate measuring apparatus
    17.
    发明授权
    Thermal type flow rate measuring apparatus 有权
    热式流量测量仪

    公开(公告)号：US07395707B2

    公开(公告)日：2008-07-08

    申请号：US11505987

    申请日：2006-08-18

    申请人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama ,  Masamichi Yamada

    发明人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama ,  Masamichi Yamada

    IPC分类号： G01F1/68

    CPC分类号： G01F1/6845 ,  G01F1/6842 ,  G01F1/692 ,  G01F1/698 ,  G01F1/699

    摘要： A flow rate sensor has a problem that a resistance value of a heat generating resistor itself varies and sensor characteristics are changed during use of the sensor for a long term. Also, the temperature of the heat generating resistor must be adjusted on a circuit substrate with a resistance constituting one side of a fixed temperature difference control circuit, and this has been one of factors pushing up the production cost. All resistances used for fixed temperature difference control are formed on the same substrate as temperature sensitive resistors of the same material. This enables all the resistances for the fixed temperature difference control to be exposed to the same environmental conditions. Hence, even when the resistances change over time, the changes over time occur substantially at the same tendency. Since the resistances for the fixed temperature difference control change over time essentially at the same rate, a resulting output error is very small.

    摘要翻译： 流量传感器具有长期使用传感器时发热电阻器本身的电阻值变化，传感器特性变化的问题。 此外，发热电阻器的温度必须在构成固定温度差控制电路的一侧的电阻的电路基板上进行调整，这是提高生产成本的因素之一。 用于固定温差控制的所有电阻都与相同材料的感温电阻器形成在同一基板上。 这使得固定温差控制的所有电阻能够暴露在相同的环境条件下。 因此，即使电阻随着时间的推移而变化，随着时间的推移发生大体上同样的变化。 由于固定温差控制的电阻基本上以相同的速率变化，所以产生的输出误差非常小。

    Air flow measuring device
    18.
    发明申请
    Air flow measuring device 有权
    气流测量装置

    公开(公告)号：US20060225497A1

    公开(公告)日：2006-10-12

    申请号：US11451468

    申请日：2006-06-13

    申请人： Hiromu Kikawa ,  Izumi Watanabe ,  Shinya Igarashi ,  Keiichi Nakada ,  Kei Ueyama

    发明人： Hiromu Kikawa ,  Izumi Watanabe ,  Shinya Igarashi ,  Keiichi Nakada ,  Kei Ueyama

    IPC分类号： G01F1/68

    CPC分类号： G01F1/6845 ,  G01F1/6842 ,  G01F5/00 ,  G01F15/12

    摘要： The present invention provides an air flow measuring device comprising a housing with a sub-passage having a inlet and a outlet for air flow formed in the housing, the sub-passage further having a predefined curvature with a maximum downstream point and a flow measuring element located in the sub-passage at a position at least further downstream from the point.

    摘要翻译： 本发明提供了一种空气流量测量装置，其包括具有子通道的壳体，该子通道具有形成在壳体中的气流的入口和出口，该子通道还具有具有最大下游点的预定曲率和流量测量元件 位于至少在该点下游的位置处的子通道中。

    Thermal type flow rate measuring apparatus
    19.
    发明申请
    Thermal type flow rate measuring apparatus 有权
    热式流量测量仪

    公开(公告)号：US20050268713A1

    公开(公告)日：2005-12-08

    申请号：US11187823

    申请日：2005-07-25

    申请人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama ,  Masamichi Yamada

    发明人： Izumi Watanabe ,  Junichi Horie ,  Keiichi Nakada ,  Kei Ueyama ,  Masamichi Yamada

    IPC分类号： G01F1/684 ,  F02D35/00 ,  F02D41/18 ,  F02D45/00 ,  G01F1/692 ,  G01F1/698 ,  G01F1/699 ,  G01F1/68

    CPC分类号： G01F1/6845 ,  G01F1/6842 ,  G01F1/692 ,  G01F1/698 ,  G01F1/699

    摘要： A flow rate sensor has a problem that a resistance value of a heat generating resistor itself varies and sensor characteristics are changed during use of the sensor for a long term. Also, the temperature of the heat generating resistor must be adjusted on a circuit substrate with a resistance constituting one side of a fixed temperature difference control circuit, and this has been one of factors pushing up the production cost. All resistances used for fixed temperature difference control are formed on the same substrate as temperature sensitive resistors of the same material. This enables all the resistances for the fixed temperature difference control to be exposed to the same environmental conditions. Hence, even when the resistances change over time, the changes over time occur substantially at the same tendency. Since the resistances for the fixed temperature difference control change over time essentially at the same rate, a resulting output error is very small.

    摘要翻译： 流量传感器具有长期使用传感器时发热电阻器本身的电阻值变化，传感器特性变化的问题。 此外，发热电阻器的温度必须在构成固定温度差控制电路的一侧的电阻的电路基板上进行调整，这是提高生产成本的因素之一。 用于固定温差控制的所有电阻都与相同材料的感温电阻器形成在同一基板上。 这使得固定温差控制的所有电阻能够暴露在相同的环境条件下。 因此，即使电阻随着时间的推移而变化，随着时间的推移发生大体上同样的变化。 由于固定温差控制的电阻基本上以相同的速率变化，所以产生的输出误差非常小。

    Air flow measuring device
    20.
    发明申请
    Air flow measuring device 有权
    气流测量装置

    公开(公告)号：US20080202230A1

    公开(公告)日：2008-08-28

    申请号：US12149242

    申请日：2008-04-29

    申请人： Hiromu Kikawa ,  Izumi Watanabe ,  Shinya Igarashi ,  Keiichi Nakada ,  Kei Ueyama

    发明人： Hiromu Kikawa ,  Izumi Watanabe ,  Shinya Igarashi ,  Keiichi Nakada ,  Kei Ueyama

    IPC分类号： G01F5/00

    CPC分类号： G01F1/6845 ,  G01F1/6842 ,  G01F5/00 ,  G01F15/12

    摘要： The present invention provides an air flow measuring device comprising a housing with a sub-passage having a inlet and a outlet for air flow formed in the housing, the sub-passage further having a predefined curvature with a maximum downstream point and a flow measuring element located in the sub-passage at a position at least further downstream from the point.

    摘要翻译： 本发明提供了一种空气流量测量装置，其包括具有子通道的壳体，该子通道具有形成在壳体中的气流的入口和出口，该子通道还具有具有最大下游点的预定曲率和流量测量元件 位于至少在该点下游的位置处的子通道中。