Multiple hearth furnace chamber
US4505210A · kind A · utility
6Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1984 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Apr 13, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D1/025
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A multiple hearth furnace chamber where each arched or conical hearth is independently supported by the outer metal shell. An expansion joint below each hearth allows for vertical movement of the interior refractory wall panels without significant vertical movement of the hearths. The expansion joint comprises an insulating refractory material which absorbs the expansion of the inner refractory (firebrick) wall panels without significant permanent deformation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.