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CN104136843B 利用液体燃料操作的移动式加热装置 有权

利用液体燃料操作的移动式加热装置
摘要：
提供一种利用液体燃料操作的移动式加热装置，其包括：燃烧室(2)，燃烧室包括燃烧空气进口(3)，其中燃烧室具有邻接燃烧空气进口(3)的加宽部分(20)，加宽部分的截面随着距燃烧空气进口(3)的距离增加而加宽，并且在加宽部分中燃烧空气和燃料于操作时在有焰燃烧中转化；燃料供应器，燃料供应器布置成使得燃料被供入加宽部分(20)中；以及空气导向装置(6)，其设计成将燃烧空气带有沿周向方向指向的流动分量地供入加宽部分(20)中，以使得在加宽部分(20)中形成轴向的再循环区域(RB)，在再循环区域中气体反向于主流动方向(H)沿朝向燃烧空气进口(3)的方向流动。燃烧室(2)流体地分段成初级燃烧区(PZ)和次级燃烧区(SZ)。初级燃烧区(PZ)具有加宽部分(20)和再循环区域(RB)。次级燃烧区(SZ)设有次级燃烧空气进口(23)，以使得相比初级燃烧区(PZ)在次级燃烧区(SZ)中形成更高的空气-燃料比(λ)。
摘要（英）：

A mobile heating device operated with liquid fuel is provided, having: a combustion chamber (2) comprising a combustion air inlet (3), wherein the combustion chamber adjacent to the combustion air inlet (3) comprises a widening portion (20) the cross-section of which widens with increasing distance from the combustion air inlet (3) and in which in operation combustion air and fuel are converted in a flaming combustion; a fuel supply which is arranged such that fuel is supplied into the widening portion (20); and an air guide device (6) being adapted to feed combustion air into the widening portion (20) with a flow component directed in the circumferential direction such that an axial recirculation region (RB) forms in the widening portion (20) in which gases flow in the direction towards the combustion air inlet (3) oppositely to a main flow direction (H). The combustion chamber (2) is fluidically sectioned into a primary combustion zone (PZ) and a secondary combustion zone (SZ). The primary combustion zone (PZ) comprises the widening portion (20) and the recirculation region (RB). The secondary combustion zone (SZ) is provided with a secondary combustion air inlet (23) in such a manner that a higher air-fuel ratio λ than in the primary combustion zone (PZ) forms in the secondary combustion zone (SZ).

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