Flow meter

Details Flow meter Flow meter

1993-10-15

1994-08-16

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

By measuring swirl rate imparted by static means

7386177, G01F 106

Patent

active

053376153

ABSTRACT:
A fluid volumetric flow sensor has relaxed dimensional tolerances when compared to prior art devices of the type in which a swirl, imparted to the fluid by channels in a housing, causes a rotor to spin. The rate at which the rotor spins may be measured by allowing the rotor lobes to interrupt an optical beam generated by a clip-on opto-electric module. The swirl-inducing channels that cause rotor motion lead from an inlet chamber into a small volute chamber that is upstream of and separate from the rotor chamber. Fluid impinging on a thrust reverser at the downstream end of the rotor chamber provides a fluid support so that the rotor is entirely supported by flowing fluid at normal flow rates. The thrust reverser may be a bluff body formed on a tension shaft that is attached to and extends downstream from a wall of the volute chamber through an axial lumen in the rotor body.

REFERENCES:
patent: 3447373 (1969-06-01), McNabb
patent: 3927568 (1975-12-01), Hoppe
patent: 4015474 (1977-04-01), Hoppe
patent: 4324144 (1982-04-01), Miyata et al.
patent: 4378703 (1983-04-01), Furness et al.
patent: 4395919 (1983-08-01), Peters
patent: 4833925 (1989-05-01), Bullock et al.
patent: 4887469 (1989-12-01), Shoptaw
patent: 5226329 (1993-07-01), Peters

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