New T type micro mixer

A micro-mixer, a new type of technology, applied in the field of micro-systems, can solve the problems of low mixing efficiency, achieve the effect of improving mixing intensity, wide application range, and easy processing

Active Publication Date: 2015-01-28
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency of low mixing efficiency of the traditional T-type micro-mixer, the present invention provides a novel T-type micro-mixer with improved mixing efficiency

Method used

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Examples

Experimental program
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example 1

[0026] Example 1: Use ANSYS Workbench software to simulate two different fluids with a density of 1000kg m -3 、1100kg·m -3 , the diffusion coefficient is 10 -9 m 2 ·s -1 . The mixer is modeled in 3D, such as figure 2 As shown, the method used is the multi-component transport of FLUENT under the Workbench integrated environment. The density and viscosity coefficient change with the occurrence of mixing. The flow direction of the two fluids can be determined by observing the direction of the velocity. The mass fraction of the components is used to determine the mixing status.

[0027] The main reason why microfluidics are difficult to mix is ​​low flow rate, so there are two reasonable and practical criteria for evaluating a micro-mixer: mixing at low flow rate and high mixing intensity. The feasibility of the T-type micro-mixer is verified by FLUENT simulation of the mixing condition of the T-type micro-mixer at low flow rate.

[0028] Mixing intensity is an important i...

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PUM

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Abstract

A new T type micro mixer includes inlet channels, a preliminary mixing channel and an outlet channel, the number of the inlet channels is at least two, the at least two inlet channels are respectively communicated with inlets of the preliminary mixing channel, the preliminary mixing channel and the outlet channel are linear structures, the mixer also comprises a bending pipe, the bending channel includes a periodic asymmetric curve bending channel, bending channel units in the periodic asymmetric curve bending channel are front and back connected in sequence, the spatial arrangement order is successively as follows: successively repeating as the order of a downward bending face, a rightward bending face, an upward bending face, a leftward bending face, a downward bending face, a rightward bending face, an upward bending face, a leftward bending face, and the like, the headmost bending channel unit in the bending channel is communicated with an outlet of the preliminary mixing channel, and the last bending channel unit in the bending channel is communicated with the outlet channel. The invention provides the new T type micro mixer to improve the mixing efficiency.

Description

technical field [0001] The invention relates to the field of microsystems, in particular to a micromixer. Background technique [0002] Through the miniaturization and integration of analytical equipment, the micro-total analysis system transfers the functions of the analytical laboratory to portable analytical equipment to the greatest extent, and then integrates them into micron or nanometer-level chips. The microfluidic analysis chip is the main research direction of the micro-total analysis system, and its goal is to integrate the functions of the entire laboratory, including sampling, dilution, mixing, reaction, separation, detection, etc. The process is miniaturized and integrated, and can be produced in batches and integrated production. While reducing the cost of expensive biochemical reagents, sample consumption and experimental analysis, it can also reduce the requirements for analysts, and it can also double the analysis speed, which will help the analysis labora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/00B01L3/00
Inventor 张端
Owner ZHEJIANG UNIV OF TECH
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