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    • 45. 发明授权
    • Catalytic reactor for automotive exhaust line
    • 汽车排气管用催化反应器
    • US4335078A
    • 1982-06-15
    • US123572
    • 1980-02-22
    • Takashi UshijimaHajime KawasakiTakayuki YamazakiYoshio Iwasa
    • Takashi UshijimaHajime KawasakiTakayuki YamazakiYoshio Iwasa
    • F01N3/28B01J35/04
    • F01N3/2853F01N3/2867Y10T29/49345
    • A catalytic reactor confining a catalyst in a mid-portion of a tubular housing made up of a pair of shells flanged sideways and welded together. The cross-sectional area of the housing becomes largest in the mid-portion, and the assembled shells define therein a fore-portion diverging towards the mid-portion and an aft-portion converging from the mid-portion. Side flanges of each shell are formed substantially over the entire length of the shell, and the width of the flanges is enlarged in both the fore- and aft-portions. The housing has two coupling flanges welded respectively at the fore- and aft-ends of the housing both to the outer periphery of the shells and to the ends of the side flanges. When the reactor confines therein a porous monolithic core shaped similarly to the mid-portion of the housing and treated with a catalyst, a buffer layer of wire mesh covers the periphery of the core so as to be tightly interposed between the core and the inner surfaces of the assembled shells, and marginal regions of the buffer layer are made to protrude beyond the end faces of the core so as to be forcibly folded inwards during assemblage of the reactor by two peripheral shoulders formed on the inside of the shells at fore- and aft-boundaries of the mid-portion.
    • 催化反应器将催化剂限制在管状壳体的中间部分中,该管状壳体由一对凸缘并且焊接在一起的一对壳体构成。 壳体的横截面积在中间部分变得最大,并且组装的壳体在其中限定出朝向中间部分发散的前部和从中间部分收敛的后部。 每个壳体的侧边缘基本上形成在壳体的整个长度上,并且凸缘的宽度在前部和后部都扩大。 壳体具有两个联接凸缘,分别在壳体的前端和后端处连接到外壳的外周边和侧凸缘的端部。 当反应器在其中限制与类似于壳体的中部形状并用催化剂处理的多孔整体式芯时,丝网的缓冲层覆盖芯的周边,以便牢固地插入在芯和内表面之间 的组装的壳体的边缘区域和缓冲层的边缘区域突出超过芯部的端面,以便在反应器的组装期间被强制地向内折叠,两个外围的肩部形成在外壳的内部的前后 中间部分的后边界。