| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a ventilation integrated joint and a different diameter-size pipe joint, which can be installed in a limited space to secure the ventilation in the entire piping of a drainage facility and to maintain a smooth drainage function, and also can secure a prescribed volume to secure excellent ventilation/drainage function without displacing the entire piping, even if the piping has different diameter-size. <P>SOLUTION: The ventilation integrated joint includes a vertical piping connection part 15 for connection of a drainage vertical piping 3 and a horizontal piping connection part 17 for connection of a drainage horizontal piping 4, each provided to a joint main body 10 with a ventilation mechanism 13, wherein the connection part 17 is provided to the position eccentric relative to the axial core O<SB>1</SB>of the connection part 15 and a bulged part 29 is bulged and formed on one side of the connection part 17. A swirl flow channel surface 18 of a substantially circular arc shape is formed on the inner peripheral surface 29a of the bulged part 29, and a small diameter-size connection hole 21 is formed at a position eccentric relative to the axial core O<SB>2</SB>of a different diameter-size connection body 20 equipped to the connection part 17, and a part of the small diameter-size connection hole 21 is continuously provided along the swirl flow channel surface 18 to cause the drainage to swirl therethrough. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
