The invention relates to a burner, especially a torch unique internal cone, with a premix higher flow rate 1000 l / h comprising a conduit (14) supplying gas mixture having one end being provided (32) mixing gas and a single nozzle (16) for producing flame mounted on the other end. The supply conduit (14) is adapted so that at any point in at least one cross-section thereof, the Reynolds number in the supply conduit (14) is less than 3000 when the burner, for example torch , it operates in steady state conditions to greater than 1000 l / h flow. The torch is used for welding, flattening, preheating before welding, heat forming or heat treatment.
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机译：本发明涉及一种燃烧器，特别是喷枪独特的内锥，其具有更高的预混合流量1000 l / h，该燃烧器包括供应气体混合物的导管（14），该气体混合物的一端被提供（32）混合气体和单个喷嘴（16）。用于产生安装在另一端的火焰。所述供应导管（14）适于使得当燃烧器（例如，火炬）在稳态条件下运行时，在其至少一个横截面中的任一点处，供应导管（14）中的雷诺数小于3000。大于1000 l / h的流量。焊枪用于焊接，扁平化，焊接前的预热，热成型或热处理。
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