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    • 2. 发明授权
    • Purifying apparatus of a particulate trap-type for collecting
particulates in exhaust gas from an engine
    • 用于从发动机收集废气中的微粒的微粒捕获型净化装置
    • US4723973A
    • 1988-02-09
    • US912061
    • 1986-09-26
    • Kazuo OyobeHiroki HoshizakiTerutaka KageyamaHirofumi SuzukiYoshihiko ImamuraKiyoshi KobashiKenichiro TakamaShinichi Takeshima
    • Kazuo OyobeHiroki HoshizakiTerutaka KageyamaHirofumi SuzukiYoshihiko ImamuraKiyoshi KobashiKenichiro TakamaShinichi Takeshima
    • F01N3/027B01D46/00
    • F01N3/027Y10S55/30
    • An exhaust-gas purifying apparatus according to the present invention comprises an exhaust-gas filter for trapping particulates in exhaust gas from an engine, and a heating device located on the upper-course side of the filter, with respect to the flowing direction of the exhaust gas, the heating device including one or more conductive-ceramic heater elements, capable of heating and burning the particulates caught by the filter, and a heater case for holding the heater elements in position, so that the caught particulates are heated and burned by the heater elements when the flow resistance of the exhaust gas, flowing through the filter, is increased by the caught particulates, whereby the flow resistance is reduced. The heater element includes a fixed electrode portion, immovably fixed to the heater case, and a slidable electrode portion held slidably. An electrode member, fixed to the heater case, is brazed to the fixed electrode portion, and the heater element is bonded to the electrode member, so as to be clamped from both sides by solidified molten solder. The slidable electrode portion is supported by the heater case, for sliding motion in the direction of thermal deformation, so that the working life of the heater element is prolonged.
    • 根据本发明的废气净化装置包括用于捕获来自发动机的废气中的微粒的废气过滤器和位于过滤器的上游侧的加热装置,相对于 废气,加热装置包括一个或多个导电陶瓷加热器元件,其能够加热和燃烧由过滤器捕获的微粒,以及用于将加热器元件保持在适当位置的加热器壳体,使得捕获的微粒被加热并被 当流过过滤器的废气的流动阻力被捕获的颗粒增加时,加热器元件增加,从而流动阻力减小。 加热器元件包括不可移动地固定到加热器壳体的固定电极部分和可滑动地保持的可滑动电极部分。 固定在加热器壳体上的电极构件钎焊到固定电极部分,并且加热器元件被接合到电极部件上,以便通过凝固的熔融焊料从两侧夹紧。 可滑动电极部分由加热器壳体支撑,用于沿热变形方向滑动,从而延长加热器元件的使用寿命。