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A drive and valve control fusion type fluid drive device

A fluid-driven, valve-controlled technology, which is applied to components of pumping devices for elastic fluids, machines/engines, variable displacement pump components, etc., can solve problems such as reducing the working life of piezoelectric actuators, and achieve compression The effect of cavity volume increase and decrease

Active Publication Date: 2021-04-09
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the fluid driving performance of positive displacement piezoelectric pumps and make them suitable for large flow / high pressure applications, researchers tried to increase the output displacement of piezoelectric actuators by increasing the driving voltage, thereby obtaining larger pumps. Cavity volume change, and too high driving voltage will reduce the working life of the piezoelectric actuator

Method used

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  • A drive and valve control fusion type fluid drive device
  • A drive and valve control fusion type fluid drive device
  • A drive and valve control fusion type fluid drive device

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The purpose of the present invention is to provide a drive and valve control fusion type fluid drive device to solve the problems in the prior art above, so that the volumetric piezoelectric pump can obtain a large volume change of the pump chamber, and improve the volumetric piezoelectricity of the volumetric piezoelectric pump. pump suitability.

[0028] In order to make the above objects, features and advantages of the present invention more comprehe...

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PUM

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Abstract

The invention discloses a drive and valve control integrated fluid drive device, which includes a first piezoelectric vibrator, a piston, a piston sleeve, a second piezoelectric vibrator and a third piezoelectric vibrator, the first piezoelectric vibrator, and the second piezoelectric vibrator The third piezoelectric vibrator and the third piezoelectric vibrator vibrate cooperatively under the drive of the external alternating voltage, and the volume changes of the pump chamber formed by each are superimposed and accumulated, and then a larger volume change of the pump chamber is obtained in a complete alternating signal driving cycle. The piston itself has mass, which is the mass adjustment mechanism of the whole vibration system. Driven by an alternating current signal, the first piezoelectric vibrator, the second piezoelectric vibrator and the third piezoelectric vibrator vibrate in concert to realize the increase and decrease of the volume of the compression cavity.

Description

technical field [0001] The invention relates to the technical field of fluid conveying equipment and its peripheral supporting facilities, in particular to a fluid drive device with integrated drive and valve control. Background technique [0002] The volumetric piezoelectric pump is a fluid drive device driven by a piezoelectric actuator. It delivers fluid with high precision and fast response speed. It has a compact structure and is easy to miniaturize. It has broad market application prospects. The traditional volumetric piezoelectric pump uses the piezoelectric vibrator installed in a sealed manner around the pump body to directly drive the fluid, and passive valves are installed at the inlet and outlet of the fluid to control the flow direction of the fluid. This type of piezoelectric pump has a compact structure and It is easy to achieve miniaturization, but due to the limited deformation ability of a single piezoelectric vibrator, it is difficult for the above-mention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B17/03F04B53/16F04B53/14F04B53/02F04B53/10
CPCF04B17/03F04B53/02F04B53/10F04B53/14F04B53/16
Inventor 王建涛倪涛祝健蔡帅张乾成
Owner YANSHAN UNIV
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