公开(公告)号：EP0592095A1

公开(公告)日：1994-04-13

申请号：EP93306705.0

申请日：1993-08-24

申请人： TRW INC.

发明人： Behrens, Hermann W. ,  Harpole, George M. ,  Lin, Jane Ming-Chin ,  Wolff, Michael F.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86638 ,  Y10T137/86662

摘要： A valve for controlling flow of hydraulic fluid. The valve includes a valve sleeve (82) and a valve core (80). The core (80) is disposed within the sleeve (82). The core (80) and sleeve (82) are relatively rotatable. The sleeve (82) has grooves (98,110) connected to a utilization device. The core (80) has grooves (116,122) connected to a fluid supply and reservoir. The core (80) and sleeve (82) have lands (200,212,240,260) which radially overlap during relative rotation of said core (80) and sleeve (82) to restrict fluid flow from a portion of the grooves (98,110) in the sleeve (82) to the grooves (122) in the core (80) connected to the reservoir. The lands (212) on the sleeve (82) have chamfered end faces (220,222) with tapered segments.

摘要翻译： 用于控制液压油流量的阀。 阀包括阀套（82）和阀芯（80）。 芯（80）设置在套筒（82）内。 芯部（80）和套筒（82）可相对旋转。 套筒（82）具有连接到利用装置的凹槽（98,110）。 芯（80）具有连接到流体供应和储存器的凹槽（116,122）。 芯部（80）和套筒（82）具有在所述芯体（80）和套筒（82）的相对旋转期间径向重叠的平台（200,212,240,260），以限制来自套筒（82）中的凹槽（98,110）的一部分的流体流动 ）连接到与储存器连接的芯部（80）中的凹槽（122）。 套筒（82）上的平台（212）具有锥形段的倒角端面（220,222）。

公开(公告)号：EP0757184A2

公开(公告)日：1997-02-05

申请号：EP96111519.3

申请日：1996-07-17

申请人： TRW INC.

发明人： Hook, Dale L. ,  Behrens, Hermann W. ,  Magiawala, Kiran R.

IPC分类号： F15D1/08

CPC分类号： F15D1/08

摘要： Disclosed is a low flow, low Reynolds number cavitating venturi. This cavitating venturi includes an inlet for receiving a liquid at an upstream pressure and an outlet for discharging the liquid received by the inlet at a downstream pressure. The liquid passes through a converging portion having a converging sidewall which extends from said inlet, through a throat portion having a throat sidewall and a diverging diffuser portion having a diverging sidewall. The cavitating venturi provides a substantially stable liquid flow rate independent of the downstream pressure up to a downstream pressure at least as high as 80% of the upstream pressure at a Reynolds number of 60,000 or less.

摘要翻译： 公开了低流量，低雷诺数空穴文丘里管。 该空化文氏管包括用于接收上游压力的液体的入口和用于在下游压力下排出由入口接收的液体的出口。 液体通过具有会聚侧壁的会聚部分，会聚侧壁从所述入口延伸穿过具有喉部侧壁的喉部和具有发散侧壁的扩散扩散器部分。 空化文丘里管提供基本上稳定的液体流量，与下游压力无关，下游压力至少高达上游压力的80％，雷诺数为60,000或更小。

公开(公告)号：EP0592095B1

公开(公告)日：1997-04-16

申请号：EP93306705.0

申请日：1993-08-24

申请人： TRW INC.

发明人： Behrens, Hermann W. ,  Harpole, George M. ,  Lin, Jane Ming-Chin ,  Wolff, Michael F.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86638 ,  Y10T137/86662

公开(公告)号：EP0728654A1

公开(公告)日：1996-08-28

申请号：EP96102381.9

申请日：1996-02-16

申请人： TRW INC.

发明人： Behrens, Hermann W. ,  Harpole, George M. ,  Lin, Jane Ming-Chin ,  Wolff, Michael F. ,  Gilbert, Wendell L.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654 ,  Y10T137/86662

摘要： A valve (10) for controlling flow of hydraulic fluid. The valve (10) has first and second valve members (80, 82) which have a plurality of lands and grooves. The valve members (80, 82) are relatively movable from a neutral position to a displaced position in which surface segments (202, 226, 208, 218) of respective pairs of lands overlap to form flow gaps (232, 234) for restricting flow of fluid between respective pairs of grooves. At least one (234) of the flow gaps is divergent by having a cross-sectional flow area which increases along a direction of fluid flow and at least one (232) of the flow gaps is convergent by having a cross-sectional flow area which decreases along a direction of fluid flow. The flow gaps (232, 234) have minimum cross-sectional flow areas (A, B) defined by the surface segments. The flow gaps (232, 234) are sized such that the minimum cross-sectional flow area (A) of the convergent flow gap (232) is larger than the minimum cross-sectional flow area (B) of the divergent flow gap (234) for suppressing valve noise.

摘要翻译： 一种用于控制液压流体流动的阀门（10）。 阀（10）具有第一和第二阀构件（80,82），其具有多个平台和凹槽。 阀构件（80,82）可从中性位置相对移动到位移位置，在该位置处，相应对的脊的表面段（202,226,208,218）重叠以形成用于限制流动的流动间隙（232,234） 的各对槽之间的流体。 至少一个（234）的流动间隙通过具有沿流体流动方向增加的横截面流动面积而发散，并且流动间隙的至少一个（232）通过具有横截面流动面积而会聚， 沿流体流动的方向减小。 流动间隙（232,234）具有由表面段限定的最小横截面流动面积（A，B）。 流动间隙（232,234）的尺寸使得会聚流动间隙（232）的最小横截面流动面积（A）大于发散流动间隙（234）的最小横截面积面积（B） ）用于抑制阀门噪音。