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A platform for research: civil engineering, architecture and urbanism
DRAIN PIPE AND DRAIN PIPING STRUCTURE USING THE DRAIN PIPE
To effectively suppress an increase in negative pressure of drainage on the lowest floor.SOLUTION: A drain piping structure is provided on the lowest floor of a building, and is provided with a speed reduction mechanism upstream of a bent portion R in a leg joint 150 provided below the floor slab of the lowest floor. This speed reduction mechanism is realized by a protrusion 122 provided on a lower pipe 120 of a drain collecting pipe 100. The protrusion 122 is provided with: a notch 122B where at least part of its protrusion length is shorter than the rest, the protrusion length spanning from the inner surface of the protrusion 122 to the axis of the drain collecting pipe 100; and a non-notch 122A other than the notch 122B. The non-notch 122A reduces the flow rate of the drainage water to prevent the negative pressure in the pipe from increasing, and the notch 122B creates an escape route for the air, thereby preventing the drainage water from being uniformly concentrated in the pipe core, which would result in no escape route for the air and therefore prevent the negative pressure in the pipe from increasing.SELECTED DRAWING: Figure 2
【課題】最下階の排水の負圧が大きくなることを好適に抑制する。【解決手段】排水配管構造は、建物の最下階に設けられ、最下階床スラブよりも下方に設けられる脚部継手１５０における曲げ部分Ｒよりも上流側に減速機構を備える。この減速機構は、排水集合管１００の下部管１２０が備える突起部１２２により実現される。突起部１２２における内周面側から排水集合管１００の軸芯側までの突出長さについて、少なくとも一部が一部以外よりも突出長さが短い切欠部１２２Ｂと、その切欠部１２２Ｂ以外の非切欠部１２２Ａとを、突起部１２２が備える。非切欠部１２２Ａにより排水の流速を低下させて管内の負圧が大きくなることを抑制するとともに、切欠部１２２Ｂにより空気の逃げ道を生成することにより排水が均一に管芯に集中してしまい空気の逃げ道がなくなり管内の負圧が大きくなることを抑制する。【選択図】図２
DRAIN PIPE AND DRAIN PIPING STRUCTURE USING THE DRAIN PIPE
To effectively suppress an increase in negative pressure of drainage on the lowest floor.SOLUTION: A drain piping structure is provided on the lowest floor of a building, and is provided with a speed reduction mechanism upstream of a bent portion R in a leg joint 150 provided below the floor slab of the lowest floor. This speed reduction mechanism is realized by a protrusion 122 provided on a lower pipe 120 of a drain collecting pipe 100. The protrusion 122 is provided with: a notch 122B where at least part of its protrusion length is shorter than the rest, the protrusion length spanning from the inner surface of the protrusion 122 to the axis of the drain collecting pipe 100; and a non-notch 122A other than the notch 122B. The non-notch 122A reduces the flow rate of the drainage water to prevent the negative pressure in the pipe from increasing, and the notch 122B creates an escape route for the air, thereby preventing the drainage water from being uniformly concentrated in the pipe core, which would result in no escape route for the air and therefore prevent the negative pressure in the pipe from increasing.SELECTED DRAWING: Figure 2
【課題】最下階の排水の負圧が大きくなることを好適に抑制する。【解決手段】排水配管構造は、建物の最下階に設けられ、最下階床スラブよりも下方に設けられる脚部継手１５０における曲げ部分Ｒよりも上流側に減速機構を備える。この減速機構は、排水集合管１００の下部管１２０が備える突起部１２２により実現される。突起部１２２における内周面側から排水集合管１００の軸芯側までの突出長さについて、少なくとも一部が一部以外よりも突出長さが短い切欠部１２２Ｂと、その切欠部１２２Ｂ以外の非切欠部１２２Ａとを、突起部１２２が備える。非切欠部１２２Ａにより排水の流速を低下させて管内の負圧が大きくなることを抑制するとともに、切欠部１２２Ｂにより空気の逃げ道を生成することにより排水が均一に管芯に集中してしまい空気の逃げ道がなくなり管内の負圧が大きくなることを抑制する。【選択図】図２
DRAIN PIPE AND DRAIN PIPING STRUCTURE USING THE DRAIN PIPE
排水管、および、その排水管を用いた排水配管構造
ADACHI KOHEI (author) / YAGI HIROSHI (author)
2024-10-11
Patent
Electronic Resource
Japanese
IPC:
E03C
DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER
,
Hausinstallationen für Frisch- oder Abwasser
| European Patent Office | 2020
DRAIN PIPE CONNECTOR AND DRAIN PIPE CONNECTION STRUCTURE
| European Patent Office | 2015