Flow meter with a rectifying module having a plurality of mesh members
US7415895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Aug 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rectifying module is arranged on an upstream side of a flow passage containing a flow velocity sensor. The rectifying module includes mesh members each having a plurality of circular small holes and ring-shaped spacers, wherein the mesh members and the spacers are alternately stacked in an axial direction and integrally joined to one another by means of thermal diffusion bonding. The mesh members have identical structures, in which the plurality of small holes are arranged concentrically at angles of separation of 60 degrees in the circumferential direction about the center of a reference small hole. The small holes are formed over the entire surface of the mesh member continuous with adjoining other small holes. The small holes of one mesh member and another mesh member adjacent thereto in the axial direction are arranged so as to have a phase angle difference of 90 degrees in the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.