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1. 发明申请

US20090145501A1 PISTON SLIDE VALVE 审中-公开
标题翻译：活塞滑阀
公开(公告)号：US20090145501A1
公开(公告)日：2009-06-11
申请号：US12328928
申请日：2008-12-05
申请人： Bernd Kiessling , Werner Doehla
发明人： Bernd Kiessling , Werner Doehla
IPC分类号： F15B13/043 , F16K11/065
CPC分类号： F16K3/246 , F16K3/32 , F16K31/0648 , F16K31/0668 , Y10T137/86694 , Y10T137/8671
摘要： An electromagnetically actuated piston slide valve (1) with proportional characteristic comprises an axially movable piston (5) for closing radial passage openings (7). So as to change, with a cross-sectional area of the fluid passage openings (7) given by the magnetic drive, a parabolic course of the pressure loss at an increasing flow rate into a largely linear to degressive course, there is provided a pressure-sensing bore (9), which connects the fluid entrance side, at which pressure P1 is present, with the fluid exit side, at which pressure P2 is present. In the pressure-sensing bore (9) is axially displaceably disposed a pressure-sensing pin (10) and pushes, when pressure P1 is greater than pressure P2, the slide piston (5) into its open position. Thereby the free cross-sectional area of the fluid passage openings (7) increases, and the pressure loss ΔP=P1−P2 decreases correspondingly. By a suitable design of the ratio of the magnetic force applied by the magnetic drive and the pressure force applied by the pressure-sensing pin (10) the hydraulic characteristic curve (pressure loss against volume flow) can be adjusted.
摘要翻译：具有比例特性的电磁致动活塞滑阀（1）包括用于封闭径向通道开口（7）的可轴向移动的活塞（5）。为了改变由磁驱动器给出的流体通道开口（7）的横截面积，在增加的流速下的压力损失的抛物线过程成为大部分线性递减的过程，提供了压力（9），其将存在压力P1的流体入口侧与存在压力P2的流体出口侧连接。在压力感测孔（9）中，当压力P1大于压力P2时，滑动活塞（5）进入其打开位置时，压力传感销（10）轴向移动地设置。因此，流体通道开口（7）的自由横截面面积增加，并且压力损失ΔP= P1-P2相应减小。通过磁力驱动施加的磁力与由压力传感销（10）施加的压力的比率的适当设计可以调节液压特性曲线（体积流量的压力损失）。

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