Solenoid valve with high flow capacity and low energy consumption
US5064166A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Sep 20, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7504
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A solenoid valve for highly efficient control of high flow capacities comprises an armature formed as a sleeve having one end closing against the valve seat. A ring-shaped protrusion on the sleeve forms a conical surface facing a corresponding conical surface on a stationary part of the solenoid valve body separated by a predetermined gap to form magnetic poles within the magnetic flux path generated by the solenoid coil. The application of electrical current to the coil generates the magnetic force across the gap which displaces the sleeve in an axial direction toward a stop ring carried by the valve body. The end of the sleeve engaging the stop ring includes recesses for adjusting the net force when fluid pressure is exerted against the sleeve as it rests against the stop ring. The net force generated by the fluid pressure is slightly less than a spring force urging the sleeve toward its closed position so that a substantial decay of the magnetic field occurs before the sleeve is displaced when the current has been shut off to the coil. When the sum of the decayed magnetic force and the net fluid force drops below the force of the spring, displacement of the sleeve away from the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.