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    • 5. 发明授权
    • Thermal flow meter measuring flow rate based on temperature difference measurement and driving energy of the heater
    • 热流量计基于温差测量和加热器的驱动能量测量流量
    • US08225652B2
    • 2012-07-24
    • US12599950
    • 2008-04-22
    • Manabu MuraokaMasaki SeoJunichi MatsudaMasanori Anzai
    • Manabu MuraokaMasaki SeoJunichi MatsudaMasanori Anzai
    • G01F1/68
    • G01F1/696G01F1/6845G01F1/698
    • A thermal flow meter has a sensor chip, a heater, first and second flow rate calculators, and an output controller. The heater increases the ambient temperature in the vicinity of a pair of temperature-sensing elements on the sensor chip by a particular temperature above a temperature of a fluid flowing along the sensor chip. The first flow rate calculator calculates a flow rate of the fluid from a temperature difference detected by the pair of temperature-sensing elements. The second flow rate calculator calculates a flow rate of the fluid from a driving energy of the heater. The output controller outputs the flow rate calculated by the second flow rate calculator, instead of the flow rate calculated by the first flow rate calculator, when the flow rate calculated by the first flow rate calculator exceeds a flow rate threshold value that is set in advance.
    • 热流量计具有传感器芯片,加热器,第一和第二流量计算器以及输出控制器。 加热器将传感器芯片上的一对温度感测元件附近的环境温度提高到高于传感器芯片流动的流体的温度的特定温度。 第一流量计算器根据由一对温度检测元件检测的温度差计算流体的流量。 第二流量计算器计算来自加热器的驱动能量的流体的流量。 当由第一流量计算器计算的流量超过预先设定的流量阈值时,输出控制器输出由第二流量计算器计算出的流量而不是由第一流量计算器计算的流量 。
    • 9. 发明授权
    • Flow meter
    • 流量计
    • US08181513B2
    • 2012-05-22
    • US12663196
    • 2008-05-19
    • Masanori AnzaiMasaki SeoJunichi MatsudaManabu Muraoka
    • Masanori AnzaiMasaki SeoJunichi MatsudaManabu Muraoka
    • G01F5/00
    • G01F1/6842G01F5/00G01F15/185
    • A flow meter includes: a body portion comprising a main flow path wherein flows a fluid to be measured, a first branch flow portion wherein the fluid to be measured branches and flows from the main flow path, a second branch flow portion wherein the fluid to be measured, which branches and flows from the first branch flow portion, flows into the main flow path, and narrow portions for restricting the flow of the fluid to be measured, provided in a primary flow path between the branch flow portions, a branched flow path structuring portion through which flows the fluid to be measured, connected to the branch flow portions; and a fluid measuring portion provided with a sensor disposed facing a flow path that is provided in the branched flow path structuring portion, wherein the sensor measures the fluid based on the detection results of the fluid introduced from the branch flow portions.
    • 流量计包括:主体部分,其包括主要流动路径,其中待测量的流体流动,待测量的流体从主流动路径流动的第一分支流动部分,第二分支流动部分,其中流体 从第一分支流路部分流出的流量流入主流路,以及设置在分支流动部分之间的主流路中的用于限制待测流体流动的狭窄部分,分支流 路径结构部分,流经被测量的流体连接到分支流动部分; 以及流体测量部,其设置有面向设置在所述分支流路构造部中的流路的传感器,其中,所述传感器基于从所述分支流部引入的流体的检测结果来测量流体。
    • 10. 发明申请
    • THERMAL FLOW METER
    • 热流量计
    • US20100223991A1
    • 2010-09-09
    • US12599950
    • 2008-04-22
    • Manabu MuraokaMasaki SeoJunichi MatsudaMasanori Anzai
    • Manabu MuraokaMasaki SeoJunichi MatsudaMasanori Anzai
    • G01F1/68
    • G01F1/696G01F1/6845G01F1/698
    • The thermal flow meter comprises heating means for increasing the temperature in the vicinity of a temperature-sensitive element on a sensor chip that is provided with a pair of temperature-sensitive elements (Ru and Rd) to a particular temperature above the temperature of a fluid that flows along the sensor chip, first flow rate calculating means for calculating the flow rate of the fluid from a temperature difference that is detected by the pair of temperature-sensitive elements, second flow rate calculating means for calculating the flow rate of the fluid from the driving energy of the heating means, and output controlling means for outputting the flow rate calculated by the second flow rate calculating means instead of the flow rate calculated by the first flow rate calculating means when the flow rate calculated by the first flow rate calculating means exceeds a flow rate threshold value.
    • 热流量计包括加热装置,用于将传感器芯片上的温度敏感元件附近的温度提高到设置有一对温度敏感元件(Ru和Rd)的特定温度以上的温度 沿着传感器芯片流动的第一流量计算装置,用于从由一对温度敏感元件检测的温度差计算流体的流量的第一流量计算装置,用于计算流体的流量的第二流量计算装置, 加热装置的驱动能量和输出控制装置,用于输出由第一流量计算装置计算出的流量时由第一流量计算装置计算的流量的第二流量计算装置计算的流量, 超过流量阈值。