公开(公告)号：US06694824B2

公开(公告)日：2004-02-24

申请号：US10149100

申请日：2002-06-05

申请人： Norio Shinmura ,  Shigeru Iwanaga ,  Yukio Nagaoka

发明人： Norio Shinmura ,  Shigeru Iwanaga ,  Yukio Nagaoka

IPC分类号： G01F166

CPC分类号： G01F1/662

摘要： A flow meter includes a flow path through which a fluid flows; a pair of transceivers for sending and receiving an ultrasonic wave propagating across the flow path; and a flow calculation section for calculating a flow rate of the fluid flowing through the flow path based on a result of the ultrasonic wave being sent and received by the pair of transceivers. The flow path has an equal flow speed area in which the fluid flows at a substantially equal flow speed over an entire flow rate area ranging from a high flow rate area to a low flow rate area. The pair of transceivers send and receive the ultrasonic wave so that the ultrasonic wave propagates in the equal flow speed area.

摘要翻译： 流量计包括流体流过的流动路径; 一对收发器，用于发送和接收跨越流路传播的超声波; 以及流量计算部，其基于由所述一对收发器发送和接收的超声波的结果来计算流过所述流路的流体的流量。 流动路径具有相等的流动速度区域，其中流体在从高流量区域到低流量区域的整个流速区域上以基本上相等的流速流动。 一对收发器发送和接收超声波，使得超声波在相等的流速区域中传播。