公开(公告)号：US20030159735A1

公开(公告)日：2003-08-28

申请号：US10369611

申请日：2003-02-21

Applicant: CEDRAT TECHNOLOGIES

Inventor： Francois Barillot ,  Gilles Patient ,  Ronan Le Letty

IPC: F16K037/00

CPC classification number: F16K31/004 ,  F16K31/126 ,  F16K41/10 ,  Y10T137/8242

Abstract: The valve comprises a mobile needle having a movement in the valve body which is controlled by an amplified piezoelectric actuator. A bellows, surrounding an intermediate zone of the needle, is integral at a first end with the valve body and at a second end with the needle so as to isolate the actuator from the pressure chamber. At least one flexible guide blade of the needle is fixed on the one hand to the valve body and on the other hand to the needle. This flexible guiding enables any part sliding with respect to another part, liable to generate wear or contaminating particles, to be avoided, except for the seat and needle.

Abstract translation: 该阀包括一个可移动的针头，该移动针头在阀体中具有由放大的压电致动器控制的运动。 围绕针的中间区域的波纹管在与阀体的第一端处成一体，并且在第二端处与针头成一体，以将致动器与压力室隔离。 针的至少一个柔性引导片一方面固定到阀体上，另一方面固定到针上。 这种柔性引导使得除了座椅和针之外，可以避免任何部分相对于另一部分滑动，容易产生磨损或污染颗粒。