公开(公告)号：US5546925A

公开(公告)日：1996-08-20

申请号：US513132

申请日：1995-08-09

申请人： John T. Knight ,  Joey W. Huffaker ,  Michael B. Rinke

发明人： John T. Knight ,  Joey W. Huffaker ,  Michael B. Rinke

IPC分类号： F23D14/70 ,  F24H9/18 ,  F24H3/02

CPC分类号： F23D14/70 ,  F24H9/1881 ,  F23C2900/07022

摘要： A fuel fired, forced air, draft induced heating furnace is provided with NOx reduction apparatus associated with a plurality of combustor tubes forming a portion of its heat exchanger structure. In-shot type fuel burners are spaced apart from and face the open inlet ends of horizontal combustion sections of the combustor tubes. The NOx reduction apparatus includes a plurality of insert members received in inlet end portions of the combustor tubes. Each insert member is formed from a single sheet of metal mesh material and has a hollow, open-ended body portion coaxially received in its associated combustor tube and spaced laterally inwardly from its interior side surface, and a circumferentially spaced plurality of integral, laterally outwardly projecting support rib portions that slidably engage the interior side surface of the combustor tube, thereby automatically maintaining the insert member in a coaxial relationship with the combustor tube regardless of the positional orientation of the tube. To axially retain the insert within the combustor tube, an end portion of one of the centering ribs has a lateral notch that receives a rod anchored to and extending transversely across the inlet end portion of the combustor tube.

摘要翻译： 燃料燃烧的强制空气，引风加热炉设有与形成其热交换器结构的一部分的多个燃烧管相连的NOx还原装置。 喷射型燃料燃烧器与燃烧器管的水平燃烧部分的开放入口端相隔开并面对。 NOx还原装置包括容纳在燃烧器管的入口端部的多个插入件。 每个插入构件由单片金属网材料形成并且具有中空的开口端主体部分，其同轴地容纳在其相关联的燃烧器管中并与其内侧表面横向向内隔开，并且周向间隔开多个整体的横向向外 突出的支撑肋部分，其可滑动地接合燃烧器管的内侧表面，从而自动地将插入构件保持与燃烧器管的同轴关系，而与管的位置取向无关。 为了将插入件轴向地保持在燃烧器管内，其中一个定心肋的端部具有横向凹口，该侧向凹槽接收锚固并横向延伸穿过燃烧器管入口端部的杆。