Reusable disc filter with foil spacers for high temperature gases
US4269613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Mar 14, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reusable filter to remove contaminants from high temperature gases, in excess of 4500.degree. F., developed by burning propellants and used to do work such as actuation of piston-powered devices in aircraft store ejector racks. Contaminants are removed to prevent fouling of the device being acted upon, to increase reliability and to decrease maintenance of the device. The filter has alternating stacked metal discs and foil spacers to permit side entry of the gas. The discs and spacers are made of molybdenum, columbium or tantalum. A plurality of studs pass through the discs and spacers to align and hold the filter together. Each spacer has a plurality of extended peripheral portions extending toward the circumference of the adjacent discs to define filter gaps. Each disc has a plurality of flow openings communicating with the filter gaps and aligned with the openings of the other discs to allow axial gas flow along the filter for end exit. The discs and spacers are sufficient in size and number to provide adequate filtering capability and absorb heat to prevent melting, but are not so large as to remove excess heat from the gas upstream from where the gas does its work. Filtering…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.