发明授权
US07963161B2 Heating resistor type air flow rate measuring device utilizing an auxiliary passage 有权
利用辅助通道的加热电阻式空气流量测量装置

Heating resistor type air flow rate measuring device utilizing an auxiliary passage
摘要:
An object of the present invention is to provide a structure which prevents a particulate contaminant and a liquid contaminant on which centrifugal separation hardly works, from arriving at a sensor element part. In order to attain the above described object, in a heat resistor type air flow rate measuring device which includes an auxiliary passage taking in a part of a fluid flowing in a main passage, and a plate-shaped sensor element installed in the aforesaid auxiliary passage and for detecting a flow rate of the fluid, and is a heat resistor type flow rate measuring device having an auxiliary passage formed along a curved line at 90° or more in an auxiliary passage portion at an upstream side from the plate-shaped sensor element, the aforesaid auxiliary passage is formed along a curved line at 90° or more on a phantom plane orthogonal to a sensor formation surface of the plate-shaped sensor element and parallel with a flow, and a sensor formation surface side and a rear side of the plate-shaped sensor element have gaps from an auxiliary passage wall surface.
公开/授权文献
信息查询
0/0