HIGH-FLOW PIEZOELECTRIC PUMP WITH STEPLESSLY ADJUSTABLE PRESSURE

WIPO Patent Application WO/2023/019493

A1

A high-flow piezoelectric pump with steplessly adjustable pressure. The high-flow piezoelectric pump comprises an upper end cover (2), a lower end cover (3), a jet chamber piezoelectric assembly (4), a semi-active one-way valve, and an outlet tube (1) which is located on the upper end cover (2). The jet chamber piezoelectric assembly (4) comprises, from top to bottom, a perforated piezoelectric vibrator (41), a pump chamber washer (42) and a dual-action piezoelectric vibrator (43) that are connected in sequence, the perforated piezoelectric vibrator (41) and the dual-action piezoelectric vibrator (43) vibrating synchronously in opposite directions; and the semi-active one-way valve comprises a cross-cantilever-beam spring member (6) and a semi-active one-way valve flap (7). According to the piezoelectric pump, the pressure of the pump is increased, the high-flow characteristic of a jet pump is retained, pressure adjustability of the pump is achieved, and the piezoelectric pump can be used for microfluidic control systems and micro-device heat dissipation systems.

HAN DONG (CN)
LU FANG (CN)
CAO QING (CN)
ZHU ZHANYUN (CN)
LIU YI (CN)
GONG GUOFANG (CN)
YANG HUAYONG (CN)

PCT/CN2021/113393

February 23, 2023

August 19, 2021

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UNIV ZHEJIANG (CN)

F04B45/047; F04B39/10; F04B39/12

WO2016008154A1

2016-01-21

CN104364526A	2015-02-18
CN102046978A	2011-05-04
KR20090112126A	2009-10-28
CN101634292A	2010-01-27
CN112412756A	2021-02-26

HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)

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