Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1985-09-11
1987-09-22
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 132
Patent
active
046947027
ABSTRACT:
A vortex shedding flowmeter comprises a flow passage through which a fluid flows, a bluff body arranged in the flow passage for generating Karman vortex of the fluid and provided with a pair of holes which open to respective side surfaces of the bluff body and extend toward and penetrate through one end of the bluff body for introducing a pressure change caused by the Karman vortex, a body which is an independent member from the bluff body, a pair of detecting parts provided in the body and comprising a pair of recesses provided on the body, a pair of fixed electrodes and a pair of movable electrodes provided in the recesses with a predetermined distance therebetween, a communicating hole provided in the body for communicating a pair of spaces formed between the fixed and movable electrodes, and a sealed fluid sealed in the spaces and the communicating hole, where the movable electrodes are displaced responsive to the pressure change in the fluid introduced from the bluff body and received by surfaces of the variable electrodes opposite to surfaces in contact with the sealed fluid and the fixed and movable electrodes constitute a pair of variable capacitors, and a detecting circuit for generating an electrical output responsive to changes in capacitances of the variable capacitors.
REFERENCES:
patent: 4085614 (1978-04-01), Curran et al.
patent: 4161878 (1979-07-01), Fussell, Jr.
patent: 4466290 (1984-08-01), Fricit
patent: 4572000 (1986-02-01), Koolman
patent: 4584883 (1986-04-01), Miyoshi et al.
Amemori Hiroyuki
Iwamoto Tetsuo
Nishiyama Shigeru
Goldstein Herbert
Tokico Ltd.
LandOfFree
Vortex shedding flowmeter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vortex shedding flowmeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vortex shedding flowmeter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2051869