초록 ▼

A fluid flow meter having a paddle wheel rotatably mounted in a cylindrical cavity and an inlet conduit and an outlet conduit tangentially aligned with the periphery of the cavity for directing a fluid to flow through it. The paddle wheel\s axis of rotation is displaced from the cavity\s centerline,

A fluid flow meter having a paddle wheel rotatably mounted in a cylindrical cavity and an inlet conduit and an outlet conduit tangentially aligned with the periphery of the cavity for directing a fluid to flow through it. The paddle wheel\s axis of rotation is displaced from the cavity\s centerline, in the direction of the inlet conduit and substantially perpendicular to the flow of fluid entering the cavity, such that the flow meter operates effectively over an extended range of Reynolds numbers, spanning both turbulent and laminar flows.

대표청구항 ▼

A fluid flow meter comprising: a housing having means defining a substantially cylindrical cavity; inlet and outlet conduit means closely spaced to each other and aligned substantially tangentially with the periphery of the cavity, for directing a fluid to flow through a major portion of the cavity,

A fluid flow meter comprising: a housing having means defining a substantially cylindrical cavity; inlet and outlet conduit means closely spaced to each other and aligned substantially tangentially with the periphery of the cavity, for directing a fluid to flow through a major portion of the cavity, from the inlet conduit means to the outlet conduit means; paddle wheel means mounted in the cavity for rotation in accordance with the fluid flow, the paddle wheel means including a plurality of substantially flat, evenly-spaced paddles; and means for sensing the angular velocity of the paddle wheel means and producing a corresponding signal; wherein the paddle wheel means is mounted for rotation about an axis displaced from but parallel to the longitudinal axis of the cavity such that the fluid flow rotates the paddle wheel means in a prescribed direction over an extended range of Reynolds numbers, spanning both turbulent and laminar flow regimes.