Switching valve seal
US6749815B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Sep 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5689
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Switching valve utilizing a rotatable seal suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. The valve has a seal plate that defines two chambers, each chamber being a flow port that leads to one of two regenerative beds of the oxidizer. The valve also includes a switching flow distributor that provides alternate channeling of the inlet or outlet process gas to each half of the seal plate. The valve operates between two modes: a stationary mode and a valve movement mode. In the stationary mode, a tight gas seal is used to minimize or prevent process gas leakage. The gas seal also seals during valve movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.