Flow restrictor and system for delivering a flow of liquid in a microcapillary
US7431052B2 · kind B2 · utility
6Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2004 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Mar 30, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K2099/0086
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to apparatus for delivering a controlled or restricted flow of liquid and limiting bubble fragmentation at the inlet. This is achieved in flow restrictor with a flow channel having over most of its length a substantially constant, minimum hydraulic diameter D=4A/W wherein A is the minimum local cross-sectional area of the channel and W is the minimum local wetting perimeter of the channel, by smoothly widening the channel at its inlet such that:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.