Apparatus and method of flow control through a valve
US6557576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Aug 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/698
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An axially-rotated valve permitting increased flow rates and lower pressure drop is disclosed using an axial eccentric split venturi with two portions where at least one portion is rotatable with respect to the other portion. A cross section of the eccentric split venturi may be non-axisymmetric such as a semicircular cross section which may assist in both throttling capabilities and in maximum flow capacity. Applications are disclosed for freeze resistant axially-rotated valves which may be fully-opened and fully-closed in one-half of a complete rotation. An internal wide radius elbow connected to a rotatable portion of the eccentric venturi may assist in directing flow with lower friction losses. A valve actuator may actuate in an axial manner located outside of the axial flow path. A seat may be used between the two portions that may include a peripheral and diametrical seal in the same plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.