Flow sensor apparatus installed in a fluid path
US5880366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/692
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel flow sensor which includes a wall in a fluid path, a substrate installed on the wall, a flow sensor constructed with at least one electric resistor formed on the substrate, and a construction for reducing turbulence caused by an existence of the flow sensor. The construction for reducing turbulence may be that an upstream side edge of the substrate is formed into a slope shape, a stair shape or a streamline. The construction for reducing turbulence may also be that the substrate is embedded into the wall. In a case that the substrate of the sensor is installed on a support board set in the fluid path, at least an upstream side edge of the support board may be formed into an acute angle or a streamline. Using the apparatus, the turbulence caused by the existence of a vertical wall is reduced because a size of vertical wall portions is small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.