Microminiature mixing device for strengthening fluid mixing by micronization boiling of steam bubbles

Abstract

The invention provides a miniature mixing device which utilizes micronized boiling of vapor bubbles to enhance fluid mixing. It includes a bubble miniaturization boiling heating part, a micro-miniature mixing channel, a water tank, a temperature control box, a pump, a flow meter, a mixed liquid water storage tank and a waste liquid water tank. The micro-miniature mixing channel is a herringbone micro-pipe that includes two inlets and one outlet, the two water tanks are respectively connected to the two inlets of the micro-mixing channel, one outlet of the micro-mixing channel is connected to the mixed liquid storage tank and the waste liquid water tank, and the boiling heating part for miniaturization of bubbles is fixed outside the micro-mixing channel , a temperature control box, a pump and a flowmeter are arranged on the connecting pipes between the two water tanks and the micro-mixing channel. The invention overcomes the defects of long mixing time, poor mixing effect, complicated flow pipeline processing and easy pipeline blockage of the static micro-mixing device.

Description

technical field [0001] The invention relates to a micro-miniature fluid mixing device, in particular to a device which utilizes the miniaturized boiling phenomenon of vapor bubbles to strengthen stratified fluid mixing in micro-miniature pipelines. It is mainly used for micro-fluid mixing devices in the fields of chemical analysis, biological and chemical sensing, molecular separation, nucleic acid sequencing, and analytical environment monitoring. Background technique [0002] The micro-mixing device refers to a micro-fluidic device system that realizes the mixing of different fluids in a micro-channel, and its purpose is to reduce the non-uniformity of the fluid. Because in the fields of chemical industry, biology, medicine, biochemistry and microelectronics, more and more researchers are paying attention to and studying the heat exchange and flow in tiny pipes. Since the size of the microchannel is very small, about in the range of 0.01mm to 10mm, the Reynolds number Re=...

AI Technical Summary

Problems solved by technology

[0005] For the existing static mixing device, the mixed fluid only relies on molecular diffusion, so the mixing time of the static mixing device is too long, the mixing effect is poor, and it is easy to cause blockage in the pipeline

The disadvantages of dynamic micro-mixing devices realized by driving methods such as ultrasonic waves, electric fields, and magnetic forces are that the driving voltage is too high, which does not match the power of micro-devices, and the production cost is high. It is only suitable for polar or magnetic liquids, etc.

Therefore, most of the current micro-mixing devices are subject to great constraints in application.

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