公开(公告)号：US4504217A

公开(公告)日：1985-03-12

申请号：US541889

申请日：1983-10-14

申请人： Richard E. Winschel, deceased ,  Fred B. Heil ,  Robert V. Seibel

发明人： Richard E. Winschel, deceased ,  Fred B. Heil ,  Robert V. Seibel

IPC分类号： F23C7/00 ,  F23D17/00 ,  F23M9/00

CPC分类号： F23C7/008 ,  F23C7/004 ,  F23D17/002

摘要： A low excess air burner having a venturi shaped insert in the burner housing to create an even air distribution across the burner throat opening. The venturi shaped insert is adjustable through a predetermined range of positions to control the flame shape and length at high loads and to trim the air flow at low loads. An offset or step in the burner throat creates a turbulent recirculation zone to stabilize the flame front and to hold ignition within the burner arch. A spinner defuser is provided at the open end of the burner housing to impart a rotary motion to the air to provide fuel air mixing and stabilizing of the flame front to aid ignition. Air inlets are surrounded with a housing and have a perforated plate shield covering them providing a smooth evenly distributed air supply to the burner housing. All fuel air mixing occurs at the open end of the burner and is contained in the refractory throat to eliminate premature ignition in the burner housing.

摘要翻译： 在燃烧器壳体中具有文丘里形插入件的低过剩空气燃烧器，以在燃烧器喉部开口处产生均匀的空气分布。 文丘里形插入件可通过预定范围的位置调节，以在高负载下控制火焰形状和长度，并在低负载下修整气流。 燃烧器喉部中的偏移或台阶产生湍流再循环区，以稳定火焰前沿并在燃烧器拱中保持点火。 在燃烧器壳体的开口端处设置有旋转器定位器，以向空气施加旋转运动，以提供火焰前端的燃料空气混合和稳定以辅助点火。 空气入口被壳体包围，并且具有覆盖它们的穿孔板护罩，为燃烧器壳体提供平滑均匀分布的空气供应。 所有燃料空气混合发生在燃烧器的开口端，并且被包含在耐火喉部中以消除燃烧器壳体中的过早点火。