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A piezoelectric micromixer integrating pumping and mixing

A micro-mixer, an integrated technology, applied in mixers, transportation and packaging, chemical instruments and methods, etc., can solve the problems of small amplitude and poor mixing strength, and achieve improved sealing, high mixing strength, and improved mixing efficiency. Effect

Active Publication Date: 2022-03-29
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing piezoelectric micro-mixer mainly uses the piezoelectric vibrator to directly disturb the fluid. Due to the small amplitude of the piezoelectric vibrator itself, it still has the problem of poor mixing intensity.

Method used

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  • A piezoelectric micromixer integrating pumping and mixing
  • A piezoelectric micromixer integrating pumping and mixing
  • A piezoelectric micromixer integrating pumping and mixing

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Embodiment Construction

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal ", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

[0032] In the description of the present inventio...

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PUM

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Abstract

The invention belongs to the technical field of microfluid mixers, in particular to a piezoelectric micromixer integrating pumping and mixing. The whole is sequentially connected with an upper cover plate, a middle plate, and a lower cover plate from top to bottom; the first piezoelectric vibrator and the second piezoelectric vibrator are installed inside the middle plate; the first pump chamber, the second piezoelectric vibrator are installed inside the middle plate, The second pump chamber; a first inlet valve and a first outlet valve are arranged between the upper cover plate and the middle plate; a second inlet valve and a second outlet valve are arranged between the lower cover plate and the middle plate; A mixing chamber is arranged inside the middle plate; a plurality of dielectric balls are arranged inside the mixing chamber; a third piezoelectric vibrator for dynamic driving of the mixing chamber is arranged between the middle plate and the lower cover plate. Advantages and features: High mixing efficiency and mixing intensity, high fluid pumping precision.

Description

technical field [0001] The invention belongs to the technical field of microfluid mixers, in particular to a piezoelectric micromixer integrating pumping and mixing. Background technique [0002] In the field of microfluidics, micromixers are widely used in the fields of chemistry, biology and new energy. At present, micro-mixers can be divided into passive micro-mixers and active micro-mixers according to the presence or absence of driving components. Passive micro-mixers usually adopt a complex channel structure to increase the fluid contact area as much as possible to improve mixing efficiency. The disadvantages are complex structure, poor mixing effect and controllability. Active micro-mixers need external driving components to drive and mix, mainly including: micro-stirring, pressure disturbance, acoustic disturbance, magnetic drive, electrofluid drive, etc. Its advantages lie in good mixing effect and controllable mixing process, but there will also be processing tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F33/3031
CPCB01F33/3031
Inventor 陈松刘海东王俊其罗罕频
Owner ZHEJIANG NORMAL UNIVERSITY
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