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1. 发明申请

US20170074421A1 PARALLEL CYLINDER TYPE CHECK VALVE 审中-公开
标题翻译：并联气缸类型检查阀
公开(公告)号：US20170074421A1
公开(公告)日：2017-03-16
申请号：US15309020
申请日：2014-09-11
申请人： Jae Gu YANG , Flowtech Co., Ltd.
发明人： Jae Gu YANG , Jai Youl YANG , Jae Wook OH , Ji Suk YANG
IPC分类号： F16K47/02 , F16K15/03
CPC分类号： F16K47/023 , F16K15/03 , F16K15/033
摘要： The present invention relates generally to a parallel cylinder-type check valve and, more particularly, to a parallel cylinder-type check valve in which two shock-absorbing dampers are connected in parallel to each other so as to absorb shock when a valve is closed, wherein the length of a rocker arm connected to any one shock-absorbing damper is adjusted to be longer according to the principle of a lever in order to provide a sufficient shock-absorbing effect. Also, the present invention relates to a parallel cylinder-type check valve, which is rapidly closed at a high speed at the time of the initial closing of the valve and is slowly closed at a low speed at the later closing of the valve by means of the parallel cylinder, thereby preventing noise and vibration, as well as preventing water hammer.
摘要翻译：本发明一般涉及一种平行的圆柱型止回阀，更具体地说，涉及一种平行的气缸式止回阀，其中两个减震阻尼器彼此并联连接，以便当阀关闭时吸收冲击其中，连接到任何一个减震阻尼器的摇臂的长度根据杠杆的原理被调节得更长，以便提供足够的减震效果。另外，本发明涉及一种平行式气缸式止回阀，其在阀的初始关闭时快速关闭，并且在阀的稍后关闭时以低速缓慢关闭的平行气缸，从而防止噪音和振动，以及防止水锤。

2. 发明申请

US20180245582A1 PIPE DEVICE INCLUDING SLAM MITIGATING MEANS 审中-公开
公开(公告)号：US20180245582A1
公开(公告)日：2018-08-30
申请号：US15754375
申请日：2016-08-24
申请人： Jae Gu YANG , Flowtech Co., Ltd. , Ji Suk YANG
发明人： Jae Gu YANG , Ji Suk YANG , Jae Wook OH , Jai Youl YANG
IPC分类号： F04B49/10 , F16L55/045 , F17D5/00 , F17D1/14
CPC分类号： F04B49/10 , E03B7/075 , E03B7/077 , E03B11/02 , E03B11/10 , F04B11/0025 , F04B11/0091 , F04B23/04 , F04F5/04 , F16L55/02718 , F16L55/045 , F16L55/05 , F17D1/14 , F17D5/00
摘要： The present invention relates to a water piping system, and more particularly, to a water piping system configured to reduce slam and water hammer of a check valve through delay of backflow of fluid by ejecting water stored in a pressure tank to a fluid forward direction at a high pressure when a pump in the water pipe is suddenly stopped, and through inducement of complete closure of the check valve by reducing a pressure applied to the check valve.

3. 发明申请

US20180142808A1 WATER PIPING SYSTEM WITH SLAM MITIGATION FUNCTION OF CHECK VALVE, AND CONTROL METHOD THEREFOR 审中-公开
公开(公告)号：US20180142808A1
公开(公告)日：2018-05-24
申请号：US15864770
申请日：2018-01-08
申请人： FLOWTECH CO., LTD.
发明人： Jae Wook OH , Ji Suk YANG , Jae Gu YANG
IPC分类号： F16K47/02 , F16K21/16 , G05D7/06 , F16K3/02
CPC分类号： F16K47/023 , F16K3/0254 , F16K15/00 , F16K21/16 , F16L55/045 , F17D1/14 , F17D1/20 , F17D5/00 , G05D7/0635
摘要： The present invention relates to a water piping system. More particularly, it relates to a water piping system that can alleviate water hammer due to slamming of a check valve by reducing the pressure difference between the front end and the rear end of the check valve by supplying some of fluid at the rear side of the check valve to the front side of the check valve when a pump is stopped, and a method of controlling the water piping system. The present invention includes: a sub-pipe having both ends connected to a front side and a rear side of the check valve, respectively, and supplying some of fluid at the rear side of the check valve to the front side of the check valve to suppress negative pressure and low pressure that is generated at the front end of the check valve when the pump is stopped.

4. 发明申请

US20180142450A1 WATER PIPING SYSTEM HAVING WATER HAMMER BUFFERING FUNCTION USING EJECTOR EFFECT AND PRESSURE TANK CONNECTOR THEREFOR 审中-公开
公开(公告)号：US20180142450A1
公开(公告)日：2018-05-24
申请号：US15868326
申请日：2018-01-11
申请人： FLOWTECH CO., LTD.
发明人： Jae Wook OH , Jai Youl YANG , Jae Gu YANG , Ji Suk YANG
IPC分类号： E03B7/07 , F16L55/05
CPC分类号： F04B49/10 , E03B7/075 , E03B7/077 , E03B11/02 , E03B11/10 , F04B11/0025 , F04B11/0091 , F04B23/04 , F04F5/04 , F16L55/02718 , F16L55/045 , F16L55/05 , F17D1/14 , F17D5/00
摘要： Disclosed is a water piping system. More particularly, the present invention relates to a water piping system having a function to dampen the effects of water hammer and check valve slam at a sudden stoppage of a pump and relates to a tank connector therefor, in which the water piping system ejects a high pressure jet stream from a high pressure tank in the direction of a primary flow in a main pipeline, thereby deterring the backflow of pipeline water in the main pipeline and reducing the pressure of pipeline water against a check valve, which enables the check valve to be slowly closed.

5. 发明申请

US20170328485A1 CHECK VALVE FOR PREVENTING SLAM AND WATER HAMMER 审中-公开
公开(公告)号：US20170328485A1
公开(公告)日：2017-11-16
申请号：US15528107
申请日：2015-11-24
申请人： Ji Suk YANG , Jae Wook OH , Flowtech Co., Ltd.
发明人： Ji Suk YANG , Jae Wook OH
IPC分类号： F16K15/03 , F16K47/02 , F16K31/12
CPC分类号： F16K15/035 , F16K15/038 , F16K31/12 , F16K47/023 , F16K47/045
摘要： The present invention relates to a check valve and, more particularly, to a check valve comprising a main disk and a separate auxiliary disk, the main disk making a rapid closing operation, and the auxiliary disk, which has an area smaller than that of the main disk, making a slow closing operation, thereby reducing the velocity of a reverse flow inside a conduit, right before the disks are finally closed, and preventing a slam (a characteristic phenomenon wherein, when the disks are closed with a bang, an instantaneous increase in pressure wave raises the possibility of piping fracture and causes noise and vibration) of the disks and water hammer.

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