Physical quantity measurement device including a passage flow channel having an inner surface with a height narrowing surface
US11047718B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The physical quantity measurement device includes a passage flow channel, a branch flow channel, and a physical quantity detection unit. A direction along which a pair of opposing surfaces facing each other are arranged is defined as a width direction, and a direction orthogonal both to the width direction and an inflow direction of fluid through an inflow port is defined as a height direction. An inner peripheral surface of the passage flow channel includes a height narrowing surface that narrows the passage flow channel so that a height dimension of the passage flow channel along the height direction is gradually reduced toward the outflow port while reserving a parallel region extending linearly between the inflow port and the outflow port parallel to the inflow direction. The height narrowing surface is not exposed through the inflow port in the inflow direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.