| 摘要 |
An oxidation oven for use in the production of carbon fibers from a polyacrylonitrile precursor fiber. The oven has an oven chamber formed by sides and ends. At least one of the ends has a first opening and a second opening. The product passes through the openings for treatment in the oven chamber. The oven is also provided with a first nozzle adjacent the first opening, a second nozzle adjacent the second opening, and respective first and second diffusers adjacent the first and second openings. The diffusers cooperate with the first and second nozzles respectively to provide first and second inductors. Each nozzle is effective for discharging air from an air flow pathway into the throat of the associate diffuser to thereby induce a positive pressure inducted air flow of ambient air toward the opening to which it is adjacent. The flowrate of the inducted air is adjustable to ensure a zero pressure gradient condition, or a low but positive flux of ambient air into the opening in order to prevent the elution of dangerous gases from the oven chamber during product manufacture.
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