Flow structure of controlling liquid continuously flowing in micro-pipeline

A micro-pipeline, liquid technology, applied in fluid controllers, gas/liquid distribution and storage, piping systems, etc., to achieve the effect of easy implementation, reduced complexity and difficulty, and reliable effect

Inactive Publication Date: 2008-06-04
CAPITALBIO CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this passive valve effect has a certain threshold, and the driving pressure of the liquid cannot exceed this threshold

Method used

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  • Flow structure of controlling liquid continuously flowing in micro-pipeline
  • Flow structure of controlling liquid continuously flowing in micro-pipeline
  • Flow structure of controlling liquid continuously flowing in micro-pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] As shown in FIG. 1 , the flow path structure of the present invention includes a main micropipe 1 and an auxiliary micropipe 2 , and the main micropipe 1 and the auxiliary micropipe 2 merge at point a to form a downstream micropipe 3 . On the auxiliary micropipeline 2 close to the confluence a, the branch forms a bypass micropipe 4, and the length of the bypass micropipe 4 is greater than the distance from the bifurcation of the auxiliary micropipeline 2 to the confluence a. The other end of the bypass micropipe 4 merges with the downstream micropipe 3 at point b to form a common downstream micropipe 5 . The main and auxiliary micropipes 1 and 2 are respectively provided with driving devices providing driving force. The driving device can be specially provided for the present invention, or it can be the driving force generated by other driving devices in the system. A sensor 6 of a feedback circuit can be arranged at the confluence a near the outlet of the auxiliary mic...

Embodiment 2

[0038] As shown in FIGS. 8-14 , for an asymmetrical double confluence flow path, the purpose of not needing to distinguish the order of liquids can be achieved by setting two sensors. For example, a sensor 7 is arranged upstream of the main micropipe 1 near the confluence a, and another sensor 8 is arranged upstream near the branch of the auxiliary pipe 2 . As shown in Figure 8, assuming that the first stream of liquid flows along the auxiliary microchannel 2 to the double confluence structure, then when the sensor 8 detects its liquid head, it can continue to drive the liquid to flow through the bifurcation through an appropriate delay until it successively passes through the bifurcation. Somewhere in the confluence a and the bypass micropipe 4 stops (as shown in FIG. 9 ). Then drive the second common liquid in the main microchannel 1, and when the sensor 7 detects its liquid head, also continue to drive the liquid to flow through the confluence a through an appropriate time ...

Embodiment 3

[0041] Such as Figure 15 As shown, the present embodiment provides a symmetrical double confluence flow path, which includes two symmetrical parallel micro-pipes 9, 10, and a micro-pipe 11 is connected to the middle of the two micro-pipes 9, 10 to form The first confluence a, the downstream of two micropipes 9, 10 forms the second confluence b by another micropipe 12, the common downstream pipeline 5 is connected to branch micropipe 12 central parts, at the first confluence a two micropipes A sensor 7, 8 is respectively arranged upstream of them. In this embodiment, the two micropipes 9 and 10 downstream of the confluence a are equivalent to a downstream micropipe and a bypass micropipe in terms of working principle. Since they are arranged symmetrically, they are mutually downstream micropipes and bypass micropipes. through microchannels.

[0042] This symmetrical flow path arrangement no longer distinguishes the first and second liquids, as long as any one of them flows f...

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PUM

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Abstract

The present invention relates to a flow path structure capable of controlling continuous flow of liquid in micropipeline. It is characterized by that it includes two micropipes, said two micropipes are combined together to form a downstream micropipe, in which one of the described micropipes is connected with a by-pass micropipe, another end of the described by-pass micropipe is combined together with the described downstream micropipe to form a common downstream micropipe, the length of the described by-pass micropipe is greater than the distance from inlet to combined place of two micropipes. Said invention can be extensively used in various micropipelines for controlling liquid flow.

Description

technical field [0001] The invention relates to a flow path structure, in particular to a flow path structure for controlling the continuous flow of liquid in a micropipe. Background technique [0002] At present, the whole world is actively researching and developing micro-integrated analysis equipment called "miniature total analysis system" or "lab-on-a-chip". These devices are mainly used for various automated operations on micro-volume liquid samples, including introducing a variety of separated samples into the system, and then allowing them to contact and produce expected interactions, until the final results are detected and analyzed and converted to humans. Various signals that can be understood. [0003] In a miniaturized system, the fusion of separately flowing liquid samples is a necessary condition for their interaction. The general form of fusion is: driving them from their respective pipelines to a confluence area to form a common downstream flow. In actual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/08F17D1/20
CPCB01L3/502746B01L2300/0816B01L2300/0867B01L3/502738G01N27/44704B01F5/04B01L3/502723B01L2200/143B01L2200/0621B01F13/0059B01L2400/0487B01L3/502715Y10T137/8766Y10T137/2076Y10T137/0329B33Y80/00B01F25/30B01F33/30
Inventor 官晓胜郭旻周骋胡玉明程京
Owner CAPITALBIO CORP
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