Valveless piezoelectric pump for double-cantilever oscillator

Abstract

A valveless piezoelectric pump for a double-cantilever oscillator comprises an upper pump body, a lower pump body, an upper piezoelectric oscillator body, a lower piezoelectric oscillator body, a pressing spring, a conical inlet, a conical outlet and a sealing ring. The valveless piezoelectric pump is characterized in that the left end of the upper piezoelectric oscillator body is integrally connected with the left end of the lower piezoelectric oscillator body to be in a v shape, the right end of the upper piezoelectric oscillator body is fixed to the upper pump body, and the right end of the lower piezoelectric oscillator body is pressed by the pressing spring. When the piezoelectric pump is in a non-work state, the lower piezoelectric oscillator body is completely in contact with the bearing plane of the lower pump body.

Description

technical field [0001] The invention belongs to the field of fluid machinery, in particular to a double cantilever vibrator valveless piezoelectric pump. Background technique [0002] Piezoelectric micropumps have many advantages such as simple structure, low energy consumption, small size, and light weight. With the deepening of research on piezoelectric micropumps, piezoelectric micropumps have been widely used in various fields in recent years. [0003] The Chinese invention patent application with the application patent number 201310292377.4 discloses a piezoelectric micro-diaphragm pump. The size of the gap between the diaphragm and the mounting support plane of the bottom plate is smaller than or equal to the thickness of the vibrating part of the cantilever of the piezoelectric vibrator, so that the diaphragm contacts or presses The vibrating part of the cantilever that tightens the piezoelectric vibrator, since the diaphragm and the piezoelectric vibrator are in plan...

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Problems solved by technology

[0003] The Chinese invention patent application with the application patent number 201310292377.4 discloses a piezoelectric micro-diaphragm pump. The gap between the diaphragm and the mounting support plane of the bottom plate is smaller than or equal to the thickness of the vibrating part of the cantilever of the piezoelectric vibrator, so that the diaphragm contacts or presses The cantilever vibrating part of the piezoelectric vibrator, since the diaphragm and the piezoelectric vibrator are in planar contact, the diaphragm has a certain limit on the amplitude of the piezoelectric vibrator during the vibration process

[0004] The piezoelectric vibrator of the existing piezoelectric pump is mostly fixed by peripheral support, which limits the deformation ability of the piezoelectric vibrator, thereby limiting the flow rate of the pump

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