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    • 31. 发明公开
    • Vent duct
    • Belüftungskanal
    • EP2644876A1
    • 2013-10-02
    • EP13158149.8
    • 2013-03-07
    • Roki Co., Ltd.
    • Shiga, TakekiAmano, TakahiroHirai, Masaharu
    • F02M35/10F02M35/12F16L43/00
    • F16L9/00F02M35/10124F02M35/10262F02M35/1211F15D1/04F16L43/00F16L43/008F24F13/02F24F13/081F24F13/22Y02T10/146
    • A vent duct (1) having an inner fluid flow passage includes a bent portion (11) formed to a duct body portion at which the fluid flow passage is bent, and a protruded portion (20) formed on a downstream side of the bent portion (11) so as to protrude from an inner peripheral surface portion (12) toward an axial center of the fluid flow passage, wherein the protruded portion (20) includes an upstream side end portion (21) formed to be gently continuous to the inner peripheral surface portion (12) of a downstream side portion of the bent portion (11), a body portion (22) extending from the upstream side end portion (21) toward the downstream side portion (23) along the fluid flow passage, and a downstream side end portion (23) along the fluid flow passage to be continuous to the body, the downstream side end portion (23) of the protruded portion (20) being formed to be perpendicular to the inner peripheral surface portion (13).
    • 具有内部流体流动通道的排气管道(1)包括:弯曲部分(11),形成在流体流动通道弯曲的管道主体部分上;以及突出部分(20),形成在弯曲部分的下游侧 (11),从内周面部(12)朝向流体流路的轴心突出,其特征在于,所述突出部(20)具有上游侧端部(21),该上游侧端部形成为与内侧 弯曲部(11)的下游侧部的周面部(12),沿着流体流路从上游侧端部(21)向下游侧部(23)延伸的主体部(22),以及 所述突出部(20)的下游侧端部(23)与所述内周面部(13)垂直地形成,所述下游侧端部(23)沿着所述流体流路连通到所述主体。