Hood-type annealing furnace, especially for steel strip and wire bunches
US7252798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2004 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Jan 17, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/673
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention describes a hood-type annealing furnace, especially for steel strip or wire bunches, with an annealing base (1) for receiving the material (7) to be annealed, a protective hood (8) which is placed on the furnace in a gas-tight manner, a radial blower (2) which is held in the annealing base (1) and comprises a blade wheel (3) and a guide apparatus (5) enclosing the blade wheel (3) for circulating a protective gas in the protective hood (8), a heat exchanger (11) for cooling the protective gas, which heat exchanger (11) is connected on the input side via a flow conduit (13) with the pressure side of the radial blower (2) and opens on the output side in an annular gap (12) between the guide apparatus (5) and the protective hood (8), and a deflection device which is axially displaceable into the pressure-side flow path of the radial blower (2) for the optional connection to the radial blower (2) of the flow conduit (13) which leads to the heat exchanger (11). In order to provide simple construction conditions it is proposed that the protective hood (8) is held in a gas-tight manner via an annular flange (9), that the heat exchanger (11) is disposed below the annular flang…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.