Ultrasonic flow meter with lens combination
US11137275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Apr 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/667
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic flow meter includes a housing for attaching to a fluid pipe. A first piezoelectric element coupled to a transmitter and receiver is configured to emit ultrasonic waves in an axial direction perpendicular to a horizontal plane defined by the piezoelectric element. A lens combination is in a lower housing portion positioned radially outside the first piezoelectric element including a refocusing lens that is ring-shaped configured for redirecting received radial ultrasonic waves to travel in an axial direction perpendicular to the horizontal plane and has a thickness profile configured to act as a matching layer for reducing multiple reflections within the lower housing portion. A second lens that is disc-shaped below the refocusing lens is configured for redirecting the radial ultrasonic waves to travel in the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.