公开(公告)号：WO2017009375A1

公开(公告)日：2017-01-19

申请号：PCT/EP2016/066631

申请日：2016-07-13

Applicant: GINOLIS OY

Inventor： LITHELL, Per Oskar ,  HINTSALA, Topi ,  PALOVIITA, Jarmo

IPC: G01F11/08 ,  G01F11/02 ,  G01F11/06 ,  F04B17/00 ,  F04B43/04 ,  F04B43/09

CPC classification number: F04B43/0054 ,  F04B17/003 ,  F04B43/0063 ,  F04B43/04 ,  F04B43/095 ,  G01F11/029 ,  G01F11/06 ,  G01F11/086

Abstract: Positive displacement pump system for the dispensing of droplets of liquid comprises a pump with a liquid-containing chamber (337) with a movable portion (313), an actuator (321) adapted to move said movable portion of said chamber for changing the volume of said chamber, a liquid outlet (343) in fluid communication with said chamber. A dispensing valve (344) for controlling flow through said liquid outlet and control means (326) for controlling said actuator and said valve are included. The system is characterized in that said actuator is a self-locking piezo-linear actuator in which the force required to produce a unit change in linear displacement of said movable portion of said chamber is substantially independent of the position of the actuator. Preferably the linear actuator is a walking piezo-motor. The pump may preferably be a bellows pump or a syringe pump. In a method to use the device the system pressure is stabilized before dispensing a plurality of droplets.

Abstract translation: 用于分配液滴的容积式泵系统包括具有带有可移动部分（313）的液体容纳室（337）的泵，用于使所述可移动部分（313）移动的致动器（321） 所述腔室用于改变所述腔室的容积;与所述腔室流体连通的液体出口（343）。 包括用于控制流过所述液体出口和用于控制所述致动器和所述阀的控制装置（326）的分配阀（344）。 该系统的特征在于，所述致动器是自锁压电线性致动器，其中产生所述腔室的所述可移动部分的线性位移的单位变化所需的力基本上与致动器的位置无关。 优选地，线性致动器是步行式压电马达。 泵可以优选为波纹管泵或注射泵。 在使用该装置的方法中，在分配多个液滴之前系统压力稳定。