Cooled tunnel-furnace with ground effect
AssigneeBertin & Cie
InventorsMichel Jean Jacques Cellier, Jean-Claude Guitton, Jean-Claude Scholle, Stephane Georges Jean-Marie Viannay
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Abstract
A tunnel-furnace is cooled by circulating air between two metal walls forming a jacket and is provided with a ported or permeable hearth extending along its entire length. The articles to be heated or baked in the furnace are supported therein on an air cushion formed with the heated air providing from the cooling jacket and supplied through the ported hearth.
Claims10
A ground-effect type tunnel furnace of the kind including a cooling jacket through which fluid is circulated, and a permeable hearth device subdividing said tunnel furnace along its entire length on the one hand into a succession of pneumatic boxes and on the other hand into a work corridor for the accomodation of the articles to be processed adjacent said permeable hearth device,
- wherein the improvement comprises
- duct means connecting said cooling jacket to said pneumatic boxes, a burner in said duct means, and a fuel supply line leading to said burner,
- whereby said fluid after having circulated through said jacket and having been thereby heated is fed to said burner which in turn delivers burnt gases to said pneumatic boxes and thence across said permeable hearth device to levitate said articles by ground effect.
Dependencies are inferred from the claim text.