公开(公告)号：EP0762442A1

公开(公告)日：1997-03-12

申请号：EP96117219.4

申请日：1993-10-13

申请人： PARKER HANNIFIN CORPORATION

发明人： Campbell, Chester D. ,  Harper, Sandra L. ,  Jain, Virender ,  Kenyon, Richard L. ,  Matthies, Alan ,  Riefler, Roger G. ,  Yabuki, Roy M. ,  Zopey, Ashok

IPC分类号： H01F7/16 ,  F16K31/06

CPC分类号： F16K31/0655 ,  F25B41/062 ,  F25B2341/065 ,  H01F7/1607 ,  H01F2007/163 ,  Y02B30/72

摘要： A movable member of a control element is moved by a plunger (24) of a proportional solenoid (22). The proportional solenoid has a magnetic flux circuit including a low permeance isolation tube (62) surrounding the plunger, which enables removal of the coil (76) and frame (78) of the solenoid from the valve. The solenoid further includes a variable permeance flux washer (69) the flux through which varies with plunger position, which is disposed from a gap (82) which provides an area of magnetic saturation. The proportional solenoid produces force/displacement characteristics which enable precise control of the control element and accurate regulation of the refrigerant flow rate through the valve.

摘要翻译： 控制元件的可移动部件由比例螺线管（22）的柱塞（24）移动。 比例螺线管具有包括围绕柱塞的低磁导隔离管（62）的磁通电路，其能够从阀门去除螺线管的线圈（76）和框架（78）。 螺线管还包括可变磁通量清洗器（69），该磁通量通过柱塞位置而变化，该磁通量从提供磁饱和面积的间隙（82）设置。 比例电磁阀产生力/位移特性，能够精确控制控制元件并精确调节通过阀门的制冷剂流量。