A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a freezing prevention device capable of easily switching between a drain function and a freezing prevention function.SOLUTION: A freezing prevention device 8 comprises a drain valve body 10 and a freezing prevention valve body 20. The drain valve body 10 comprises a cylindrical pipe threaded part 12 screwed into a pipe screw hole 2C formed in a piping 2A, and is connected to the piping 2A via a flow path by being screwed into the pipe screw hole 2C. The freezing prevention valve body 20 comprises a cylindrical valve threaded part A1 screwed into a valve screw hole 11A formed in the drain valve body 10, and is connected to the piping 2A via the flow path through the drain valve body 10 by being screwed into the valve screw hole 11A. The freezing prevention valve body 20 has a discharge hole B1 capable of discharging water flowing out from the piping 2A to the outside, and a thermosensitive changeover valve body 22 that switches opening and closing of the flow path from the piping 2A to the discharge hole B1 by a temperature-sensitive operation in the pipe axis direction accompanying an internal temperature change. When the freezing prevention valve body 20 is unscrewed from the drain valve body 10, water flowing out from the piping 2A to the drain valve body 10 is discharged to the outside.SELECTED DRAWING: Figure 4
【課題】水抜き機能と凍結防止機能との切り替えを簡便に行える凍結防止装置を提供すること。【解決手段】凍結防止装置８は、水抜き弁体１０と凍結防止弁体２０とを有する。水抜き弁体１０は、配管２Ａに形成される管ねじ孔２Ｃに螺合される筒状の管螺合部１２を備え、管ねじ孔２Ｃへの螺合により配管２Ａと流路接続される。凍結防止弁体２０は、水抜き弁体１０に形成される弁ねじ孔１１Ａに螺合される筒状の弁螺合部Ａ１を備え、弁ねじ孔１１Ａへの螺合により水抜き弁体１０を介して配管２Ａと流路接続される。凍結防止弁体２０は、配管２Ａから流れ出た水を外部へ排出可能な排出孔Ｂ１と、内部の温度変化に伴う管軸方向の感温動作により配管２Ａから排出孔Ｂ１へと至る流路の開閉を切り替える感温式の切替弁体２２と、を有する。凍結防止弁体２０が水抜き弁体１０との螺合から外されることで、配管２Ａから水抜き弁体１０に流れ出た水が外部へ排出される。【選択図】図４
To provide a freezing prevention device capable of easily switching between a drain function and a freezing prevention function.SOLUTION: A freezing prevention device 8 comprises a drain valve body 10 and a freezing prevention valve body 20. The drain valve body 10 comprises a cylindrical pipe threaded part 12 screwed into a pipe screw hole 2C formed in a piping 2A, and is connected to the piping 2A via a flow path by being screwed into the pipe screw hole 2C. The freezing prevention valve body 20 comprises a cylindrical valve threaded part A1 screwed into a valve screw hole 11A formed in the drain valve body 10, and is connected to the piping 2A via the flow path through the drain valve body 10 by being screwed into the valve screw hole 11A. The freezing prevention valve body 20 has a discharge hole B1 capable of discharging water flowing out from the piping 2A to the outside, and a thermosensitive changeover valve body 22 that switches opening and closing of the flow path from the piping 2A to the discharge hole B1 by a temperature-sensitive operation in the pipe axis direction accompanying an internal temperature change. When the freezing prevention valve body 20 is unscrewed from the drain valve body 10, water flowing out from the piping 2A to the drain valve body 10 is discharged to the outside.SELECTED DRAWING: Figure 4
【課題】水抜き機能と凍結防止機能との切り替えを簡便に行える凍結防止装置を提供すること。【解決手段】凍結防止装置８は、水抜き弁体１０と凍結防止弁体２０とを有する。水抜き弁体１０は、配管２Ａに形成される管ねじ孔２Ｃに螺合される筒状の管螺合部１２を備え、管ねじ孔２Ｃへの螺合により配管２Ａと流路接続される。凍結防止弁体２０は、水抜き弁体１０に形成される弁ねじ孔１１Ａに螺合される筒状の弁螺合部Ａ１を備え、弁ねじ孔１１Ａへの螺合により水抜き弁体１０を介して配管２Ａと流路接続される。凍結防止弁体２０は、配管２Ａから流れ出た水を外部へ排出可能な排出孔Ｂ１と、内部の温度変化に伴う管軸方向の感温動作により配管２Ａから排出孔Ｂ１へと至る流路の開閉を切り替える感温式の切替弁体２２と、を有する。凍結防止弁体２０が水抜き弁体１０との螺合から外されることで、配管２Ａから水抜き弁体１０に流れ出た水が外部へ排出される。【選択図】図４
FREEZING PREVENTION DEVICE
凍結防止装置
KATAOKA KENSUKE (author)
2024-08-29
Patent
Electronic Resource
Japanese