End seal for oxidation oven
US9464844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2011 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Jan 9, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D99/0075
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Provided is an oven that includes an oven chamber with an oven wall that defines apertures through which the product passes to repeatedly enter and exit the oven chamber during treatment. A vestibule chamber is disposed adjacent to the oven wall and encloses a return air duct that draws in ambient air entering the vestibule chamber and the process gas entering the vestibule chamber from the oven chamber through at least one of the apertures in the oven wall. A nozzle is provided externally of the vestibule chamber and oven chamber in fluid communication with the return air duct. The nozzle receives gas drawn in by the return air duct and directs the combination generally toward at least one aperture formed in the vestibule chamber through which ambient air can enter the vestibule chamber to form an air curtain adjacent to the at least one aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.