Karman vortex flowmeter

Details Karman vortex flowmeter Karman vortex flowmeter

1986-01-29

1987-03-10

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

046482806

ABSTRACT:
Various forms of Karman vortex generators are used for flowmeters in which the vortices generated are used to create pressure differences on opposite sides of a vibrator plate whose frequency of rotation is measured optically as a measure of the fluid flow. One form of flowmeter, used to measure the quantity of air inhaled by an internal combustion engine, uses a chamber outside the path of the inhaled gas which is maintained at a negative pressure and which communicates both with the air line and outside air such that clean air is drawn in to keep the optics enclosed therein clean.

REFERENCES:
patent: 3170383 (1965-02-01), Hunt
patent: 3691830 (1972-09-01), Tomota et al.
patent: 3777563 (1973-12-01), Yamasak et al.
patent: 3809908 (1974-05-01), Clanton
patent: 4018513 (1977-04-01), Boeke
patent: 4117460 (1978-09-01), Walworth
patent: 4161878 (1979-07-01), Fussell, Jr.
patent: 4536708 (1985-08-01), Schneider

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