公开(公告)号：EP1172566A4

公开(公告)日：2002-07-24

申请号：EP99913648

申请日：1999-04-13

申请人： MAGAMI MITSUHARU ,  MAGAMI NAOYUKI ,  MAGAMI TAKUYA

发明人： MAGAMI MITSUHARU ,  MAGAMI NAOYUKI ,  MAGAMI TAKUYA

IPC分类号： F15B11/15 ,  F15B13/04 ,  F15B13/042 ,  F16K31/122

CPC分类号： F15B13/0426 ,  F15B11/15 ,  F15B13/0402 ,  Y10T137/2668 ,  Y10T137/86413

摘要： This invention relates to a device for automatically switching discharge of pressurized fluid from outlet ports. To be more specific, this invention relates to an automatic pressurized fluid switching device for performing a switching operation using the pressure of pressurized fluid in itself without using electrical elements. An object of the invention is to provide an automatic pressurized fluid switching device having an excellent switching performance without using an electrical element so as not to be complicated in structure. To attain the object according to the invention, there is provided an automatic pressurized fluid switching device comprising an inlet port for introducing pressurized fluid, a plurality of outlet ports for discharging the pressurized fluid, a switching valve disposed between the inlet port and the outlet ports for switching over the outlet ports, a pilot valve for piloting the switching operation of the switching valve, and a reaction member for controlling the pilot action of the pilot valve in response to the pressure of the pressurized fluid introduced, which is characterized in that the pilot valve is provided with a first pilot unit in which the pilot action of the pilot valve is controlled only by the reaction member, and a second pilot unit in which the pilot action of the pilot valve is controlled by the reaction member in its initial and final stages and directly by the pressurized fluid in its middle stage. According to the invention, two lineages of the pilot action of the pilot valve for piloting the switching action of the switching valve can be constituted. The lineages are formed of the pilot action controlled only by the reaction member in the first pilot unit and the pilot action controlled by both of the reaction member and the fluid in the second pilot unit. The pilot action in the second pilot unit is controlled by the reaction member in the initial and final stages and by the pressurized fluid in the middle stage. Consequently, the pilot action in the second pilot unit in the middle stage can be securely effected even when the pressurized fluid introduced thereinto is little at the time of being again operated after stopping at the intermediate point of the switching action. Thus, smooth switching action can be performed securely.

摘要翻译： 一种自动加压流体切换装置，在不使用电气元件和复杂结构的情况下改进了开关性能，包括用于排出加压流体的多个出口端口，设置在入口端口和出口端口之间并适于在加压 流体排出口，用于引导切换阀的切换操作的引导阀和响应于引入的加压流体的压力来控制引导阀的引导操作的响应体，其特征在于，引导阀包括 具有仅由响应体控制的引导操作的第一引导单元和在初始阶段和最终阶段由响应体控制其引导操作并且通过中间阶段中的加压流体的压力控制的第二引导单元，由此确保中间阶段 第二个试点单位的指导操作和平稳积极的 e切换操作。