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发明公开
CN108472441A 一种流体输送系统 有权

一种流体输送系统
摘要：
本发明大体上提供了一种流体输送系统，包括：储液器(7)、泵送室(8)、致动器(20)和驱动构件(21)，该泵送室具有容积、入口阀(48)、出口阀(49)和膜(47)。入口阀和出口阀各自包括无源常闭单向止回阀。入口阀在泵送室容积和储液器之间提供选择性的流体连通。储液器中流体处于大致的环境压力下。驱动构件可操作地连接至泵送室膜。激励致动器使驱动构件在往复运动中移动，从而使膜移动以在最小容积和最大容积之间改变泵送室容积。当致动器静止时，在高于储液器内环境压力的压力下保持泵送室容积。
摘要（英）：

The invention generally provides a fluid delivery system comprising: a reservoir (7); a pumping chamber (8) having a volume, an inlet valve (48), an outlet valve (49) and a membrane (47); an actuator (20); and a drive member (21). The inlet valve and the outlet valve each comprise a passive normally closed one-way check valve. The inlet valve provides selective fluid communication between the pumping chamber volume and the reservoir. Fluid in the reservoir is at substantially ambient pressure. The drive member is operatively coupled to the pumping chamber membrane. Energising the actuator moves the drive member in reciprocating motion and thereby displaces the membrane to change the pumping chamber volume between a minimum volume and a maximum volume. The pumping chamber volume is held at a pressure above the ambient pressure in the reservoir when the actuator is at rest.

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