公开(公告)号：US5481925A

公开(公告)日：1996-01-09

申请号：US303714

申请日：1994-09-09

Applicant: Ronald E. Woodbury

Inventor： Ronald E. Woodbury

IPC: G01F1/40 ,  G01F1/46

CPC classification number: G01F1/46 ,  G01F1/40

Abstract: An airflow sensor is designed with features which enhance the accuracy of measurement. The central hub of the airflow sensor is made in an air foil shape to reduce noise and turbulence at that region. The airflow sensing tubes extend radially outwardly from the central hub and are made extremely thin in profile to minimize turbulence. Each airflow sensing tube has a plurality of spaced airflow receiving openings therethrough which are spaced from one another in a manner permitting each opening to receive air from a volume of air equal to the volumes of air from which other holes receive air flow. The downstream air collection tubes are circumferentially spaced between the first-mentioned airflow sensing tubes and have open ends to receive air from the open areas between the first-mentioned airflow sensing tubes. The airflow sensor is designed to be mounted within a conduit of generally circular cross-section and the mounting devices which mount the outer ends of the tubes to the inner walls of the conduit have turbulence-reducing air foil shapes.

Abstract translation: 气流传感器设计有提高测量精度的特征。 气流传感器的中心毂被制成空气箔形状，以减少该区域的噪音和湍流。 气流感测管从中心毂径向向外延伸并且被制成非常薄的轮廓以最小化湍流。 每个气流感测管具有多个间隔开的气流接收开口，每个气流接收开口彼此间隔开，以允许每个开口从等于其它孔接收空气流量的空气体积的空气体积接收空气。 下游空气收集管在第一个提到的气流感测管之间周向间隔开，并具有开口端，以从第一个气流感测管之间的开放区域接收空气。 气流传感器被设计成安装在通常为圆形横截面的导管中，并且将管的外端安装到导管的内壁的安装装置具有湍流减小的空气箔形状。