Flow control valve with venturi
US5220940A · kind A · utility
Inventor
Key dates
| Filing date | Mar 13, 1992 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Mar 13, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87917
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
To measure and control the flow of fluid through a passageway, a venturi meter and a regulator are disposed in the passageway. The area of the cross-section gradually decreases and then gradually increases. The venturi meter also has first and second static pressure ports, the first port being located at a relatively wide portion of the venturi meter, and the second port being located at a narrower portion of the venturi meter. Each of the ports is disposed about the circumference of the venturi. A regulator, or another type of adjustable valve variably impedes flow through the passageway. A controller measures the static pressure at first and second ports and adjusts the regulator or valve based on the static pressure measured at the first and second static pressure ports. Another device for controlling flow through a passageway comprises a piston having one face exposed to the fluid in the path and forming part of a venturi disposed in the passageway such that the conduit has a cross-sectional area that decreases and then increases. An actuator adjusts the position of the piston based on the static pressure measured at first and second static pressure ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.