Crucible melting furnace
US4165865A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1978 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Mar 1, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B2014/146
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A crucible furnace for high-temperature melting of metals or other materials which includes a capped vessel for serving as a crucible to hold a charge of material to be melted, a solid baffle surrounding and closely spaced from the vessel to form a restricted passageway and a refractory wall surrounding and widely spaced from the baffle to form a combustion chamber. Fuel is supplied at the base of the combustion chamber and mixed with air preheated by a compact internal recuperator operative from exhaust gases exiting the restricted passageway. The fuel is burned in the combustion chamber, heating the baffle which in turn radiates heat to the vessel containing the charge. Several of the elements forming the combustion and heat transfer system also serve as structural elements providing rigid support to internal components when the furnace is upright and when it is tilted to pour off melt. Adjacent its top, openings are formed through the baffle to permit flame and combustion products to pass from the combustion chamber downwardly through the restricted passageway and recuperator region to the exhaust flue. Thus, heating of the vessel is also had by convection. The combustion chambe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.