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Pulsating flow-based oscillating jet type micro-mixer

A micro-mixer and jet technology, which is applied in the fields of chemical industry and life science, can solve the problems of difficult processing and single mixing mechanism of the micro-mixer, and achieve the effects of improving mixing efficiency, easy structure and high mixing efficiency.

Active Publication Date: 2016-01-06
BEIJING UNIV OF TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The invention combines the advantages of the passive micro-mixer and the active micro-mixer, can effectively improve the efficiency of the micro-mixer, and solve the defects of the existing micro-mixer such as single mixing mechanism and difficult processing.

Method used

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  • Pulsating flow-based oscillating jet type micro-mixer
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  • Pulsating flow-based oscillating jet type micro-mixer

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Embodiment Construction

[0026] 1. Processing requirements

[0027] a) The material of this kind of micro-mixer is made of glass material, PDMS and other transparent materials, and the processing method adopts the method of chemical etching. The external conduits at the entrance and exit of the channel can use Teflon plastic hose. Pay attention to the bonding quality between the glass plate and the underlying substrate to ensure the hermeticity of the system.

[0028] b) This kind of micro-mixer can realize the mixing of various fluids, and multiple inlet channels can be provided, and only three inlet channels are provided for the convenience of explanation in the text. Therefore, if it is necessary to increase the mixing number of fluid types in actual design, a branch structure can be added at the inlet channel a(1) to meet the requirements of actual working conditions.

[0029] c) The width of the inlet channel b(2), the inlet channel c(3) and the inflow angle can be changed according to the mixin...

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Abstract

The invention provides a pulsating flow-based oscillating jet type micro-mixer. The micro-mixer comprises a glass cover plate and a lower layer substrate; the glass cover plate and the lower layer substrate are connected through high temperature bonding in order to form the micro-mixer. Advantages of a passive type micro-mixer and an active type micro-mixer are combined, so that efficiency of the micro-mixer is effectively improved, and single mixing mechanism, big processing difficulty and other defects of the present micro-mixer are solved. A pulsating flow with sawtooth wave type flow velocity is applied to a fluid at each of two symmetrical inlets of the micro-mixer in order to promote generation of oscillation of a mixed fluid; a secondary mixing chamber, a branch structure and a sawtooth shaped structure are added for increasing disturbance intensity in order to realize intensive mixing of the fluid in a micro scale. The micro-mixer has the advantages of simply processed structure, low cost, high mixing efficiency, etc.

Description

technical field [0001] The present invention provides a novel micro-mixer that can be used to improve the mixing efficiency of different reactants. The interior of the mixer has the characteristics of chaotic convection, which can realize the rapid fusion of various fluids at the micro scale. The invention relates to technical fields such as life science and chemical industry, and in particular relates to a micro-mixer. Background technique [0002] The goal of the miniature full analysis system is to concentrate the sampling, mixing, dilution, sample addition, reaction, separation and detection functions of the entire chemical laboratory on one chip, so as to save reaction reagents to the greatest extent and reduce the risk of the analysis process ( Such as highly toxic or flammable and explosive reagents), improve the analysis efficiency, and also have the advantages of easy miniaturization and automation. Due to the above advantages, the application prospect of this tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/00
Inventor 刘赵淼赵福旺申峰尉舰巍
Owner BEIJING UNIV OF TECH
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