Liquid flow control device
US6065498A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Feb 4, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6855
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flow control device for providing variable resistance to liquid flow through a flow passageway. A cylindrical housing communicates with the passageway. The housing has a sidewall, and an inlet and an outlet each disposed at two ends. A vortex generator is located within the housing, and has a base spaced from the inlet end of the housing and an annular flow guide radially spaced from the housing sidewall. The flow guide includes a number of slots. Liquid enters the housing through the inlet and is directed outside the vortex generator and through the slots. This creates a vortex flow path within the generator as the liquid flows to the housing outlet, so that as the pressure of the liquid at the inlet increases the flow factor of the device decreases to reduce the liquid flow rate through the device at higher inlet pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.