Liquid drop generation device and liquid drop generation system

Abstract

The invention discloses a liquid drop generation device, and belongs to the technical field of micro drop generation. The liquid drop generation device comprises an injection mechanism, a dispersion phase liquid storage pool, a continuous phase liquid storage pool and micro passages, wherein the output end of the injection mechanism communicates with the dispersion phase liquid storage pool; one end of the micro passages communicates with the dispersion phase liquid storage pool; the other end of the micro passages communicates with the continuous phase liquid storage pool; the widths of the micro passages and the depths of the micro passages are different. The dimension of the micro passages is smaller than the dimension of the connected continuous phase liquid storage pool; when a dispersion phase enters the flowing phase liquid storage pool from the micro passage outlets, the Laplace pressure difference of the fluid in the micro passages and at the micro passage outlet positions canbe increased, so that the liquid drop is formed. The liquid drop made by the device is only influenced by the dimension of the micro passage; the influence on the size and the stability of the liquiddrop caused by the flowing speed of the dispersion phase and the continuous phase is very small, so that the generation of the liquid drop is more stable, simpler, more convenient, faster and more reliable.

Description

technical field [0001] The invention relates to a technical solution in the field of droplet generation, in particular to a droplet generation device and a droplet generation system. Background technique [0002] At present, the methods for preparing droplets mainly include microfluidic preparation method, spray method and capillary droplet control method. Among them, the microfluidic method uses some special fluid flow mechanisms in the microchannel structure to prepare droplets, and the droplets produced by it have high uniformity in size and strong controllability, which has significant advantages compared with other methods; among them, using The methods of microfluidic preparation of droplets mainly include T-channel method and fluid focusing method, as follows: [0003] 1. The T-shaped channel method is to use the geometric characteristics of the intersection of two microchannels, so that when the front of the liquid to be dispersed turns at the intersection, the mome...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a droplet generating device and a droplet generating system to solve the problem of difficulty in controlling droplet generation in the prior art

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