Internal heat exchange tubes for industrial furnaces
US5116221A · kind A · utility
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6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1991 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | May 2, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2009/0083
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An internal heat exchange tube for cooling work within an industrial furnace is positioned to extend within the furnace and is closed at its axial end which is inside the furnace. Within the tube is an open ended, thin wall inner tube formed in the shape of a helical coil. Water introduced into the inner tube distributes thermally induced, circumferential stress gradients about both tubes to prevent tube bending while achieving fast cooling of the outer tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.