公开(公告)号：US4418723A

公开(公告)日：1983-12-06

申请号：US289243

申请日：1981-08-03

Applicant: Tsuyoshi Koni ,  Yoshihisa Urushida

Inventor： Tsuyoshi Koni ,  Yoshihisa Urushida

IPC: G01F1/48 ,  F16K47/12 ,  G01F1/40 ,  G01F15/00 ,  F15D1/00

CPC classification number: F16K47/12 ,  G01F1/40

Abstract: Improvements in a flow restrictor for use in a flowmeter measuring a flow rate according to the pressure drop caused by laminar flow, utilizing the fact that the pressure drop is proportional to the flow rate. The flow restrictor comprises a cylindrical member, and a housing having a fluid inlet and a fluid outlet for accommodating the cylindrical member, wherein at least one groove or spiral groove for passing fluid is formed in the peripheral direction of the cylindrical surface of the cylindrical member or in the peripheral direction of the inner surface of the housing forming a cylindrical cavity for accommodating the cylindrical member.

Abstract translation: 根据压降与流量成比例的事实，用于流量计中的流量计的改进，该流量计根据由层流引起的压降来测量流量。 流量限制器包括一个圆筒形构件和一个具有流体入口和用于容纳圆柱形构件的流体出口的壳体，其中至少一个用于流体流动的沟槽或螺旋槽形成在圆柱形构件的圆柱形表面的圆周方向上 或者在壳体的内表面的圆周方向上形成用于容纳圆柱形构件的圆柱形空腔。