会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明专利
    • Vent duct
    • VENT DUCT
    • JP2013227961A
    • 2013-11-07
    • JP2012197183
    • 2012-09-07
    • Roki Co Ltd株式会社Roki
    • SHIGA TAKEKIAMANO TAKAHIROHIRAI MASAHARU
    • F02M35/10F02M35/12
    • F16L9/00F02M35/10124F02M35/10262F02M35/1211F15D1/04F16L43/00F16L43/008F24F13/02F24F13/081F24F13/22Y02T10/146
    • PROBLEM TO BE SOLVED: To provide a vent duct capable of further reducing ventilation resistance without increasing the size or dimension of the vent duct.SOLUTION: In a vent duct having an inner peripheral passage bent to form a bent portion and a protruded portion formed on an inner peripheral surface at a downstream side of the passage in the bent portion so as to protrude from the inner peripheral surface, the protruded portion includes a head formed to be gently continuous to the inner peripheral surface at an upstream side of the bent portion in a section orthogonal to the extension direction of the passage at the downstream side and a body extending along the extension direction of the passage at the downstream side. An end at the downstream side of the body is formed in a perpendicular surface perpendicularly crossing the inner peripheral surface at the downstream side.
    • 要解决的问题:提供一种能够进一步降低通风阻力而不增加排气管的尺寸和尺寸的排气管。解决方案:在具有内周通道弯曲以形成弯曲部分的通风管道和形成在 所述弯曲部的所述通路的下游侧的内周面从所述内周面突出,所述突出部包括形成为在所述弯曲部的上游侧在所述内周面上缓和地连续的头部 与下游侧的通路的延伸方向正交的截面以及沿着下游侧的通道的延伸方向延伸的主体。 在主体的下游侧的端部形成在与下游侧的内周面垂直交叉的垂直面。