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US 6,283,748 B1Granted
Continuous pusher furnace having traveling gas barrier
AssigneeBTU International, Inc.
InventorsGary Orbeck, John Thayer
Life of this patent
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AssigneeBTU International, Inc.
InventorsGary Orbeck, John Thayer
Estimating the term…
A continuous pusher furnace includes a product carrier assembly forming a traveling gas barrier. The product carrier assembly comprises a pusher plate disposed to receive product thereon and a gas barrier extending upwardly from the pusher plate. The perimeter of the gas barrier is sized and configured to fit within a vestibule between heating chambers in the furnace with a clearance gap with the vestibule selected to increase a gas flow velocity through the vestibule sufficient to overcome a gas diffusion velocity through the vestibule in a direction opposite to the gas flow. In this manner, gas is unable to diffuse into an upstream heating chamber. In an alternative embodiment, an exhaust outlet may also be provided in the vestibule or chamber to exhaust gas from upstream and downstream heating chambers from the furnace.
A continuous pusher furnace comprising:
A product carrier assembly for use with a continuous pusher furnace, the furnace comprising at least one heating chamber, at least one vestibule adjoining the heating chamber, and a hearth surface defining a product path through the heating chamber and through the vestibule, the product carrier assembly comprising:
Dependencies are inferred from the claim text.