著者

秋山 和也 大塚 雅之 久保田 雄亮 重藤 博司

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.88, no.812, pp.799-807, 2023-10-01 (Released:2023-10-01)

参考文献数

15

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This study aims to evaluation of carrying performance when water saving toilets are connected to drainage pipes in various configurations, and makes use of it for plumbing design. Internationally, ISO 31600:2022 was established as a standard for labeling and performance testing of water-using equipment, including toilets. However, this standard is limited to equipment and do not take into account the waste carrying performance. In this report, carrying performance when the amount of flushing water, the pipe diameter, and the gradient are changed in straight pipe is experimentally identified.

著者

西島 慈子 徳永 智彦 戸井 武司 重藤 博司 清水 剛

出版者

一般社団法人日本機械学会

雑誌

環境工学総合シンポジウム講演論文集

巻号頁・発行日

vol.2003, no.13, pp.40-41, 2003-06-24

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A rest room is required in comfortable living space. So this paper describes the improvement of sound quality of toilet flushing sound. An acrylic board model is made for taking a picture of the flushing mechanism by a high-speed video camera. It is found that the flushing sound generates broken bubble in water current, and the frequency characteristics of the sound depend on the size of the bubble. The relationship between sound pressure level of the flushing sound and sound quality is investigated by comparing with the bubble shape.