Industrial furnace for the thermal treatment of metal workpieces
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United States of America Patent
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-
Sep 9, 1986
Grant Date -
N/A
app pub date -
Dec 21, 1984
filing date -
Dec 23, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An industrial furnace, especially a single chamber vacuum furnace, for thermally treating metal workpieces. The furnace has a heating chamber which is disposed in a furnace housing and receives a charge. The heating chamber can be heated via heating elements, and has at least one closable chamber opening through which is conveyed a cooling gas which can be circulated with the aid of a blower through a heat exchanger. To control the flow of cooling gas arriving through the cooling gas delivery pipe, a distribution device which is moved back and forth during a cooling process is pivotably mounted in the region of the chamber opening which is provided for the entry of the cooling gas. In order to make it possible for the cooling gas to flow uniformly over the surface of the charge, jet nozzles are provided as the distribution means. The cooling gas flows through these jet nozzles prior to striking the charge.
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