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Flow structure of controlling liquid continuously flowing in micro-pipeline

A micro-pipeline and liquid technology, applied in gas/liquid distribution and storage, pipeline systems, mechanical equipment, etc., to achieve the effect of convenient bubble-free fusion and reliable effect

Active 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 back pressure formed by the liquid mainly used to overcome the flow resistance of the pipeline 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] Such as figure 1 Shown, the structure of the present invention comprises a main micropipe 1, an auxiliary micropipe 2 communicated with the main micropipe 1, and a bluff body 3 is set at the confluence area of ​​the auxiliary micropipe 2 and the main micropipe 1, which can effectively To reduce the area of ​​the flow path, the shape of the bluff body 3 can be a rectangle or a triangle (such as figure 2 shown), other shapes are also possible. The inlet ends of the main micropipe 1 and the auxiliary micropipe 2 are respectively provided with a driving device (not shown in the figure) that provides a driving force. The driving force generated by the device. Such as figure 1 As shown, a sensor 4 can also be arranged in the confluence area for monitoring the inflow and outflow of liquid.

[0025] The fabrication of the above-mentioned structure can adopt the usual method of making chips. First, the grooves forming the micropipes 1 and 2 and the baffle body 3 are made on...

Embodiment 2

[0040] Such as Figure 8 As shown, this embodiment includes a main micropipe 1 and an auxiliary micropipe 2 , and when the auxiliary micropipe 2 approaches the confluence area with the main micropipe 1 , it branches to form a bypass micropipe 5 . Auxiliary micropipe 2 and main micropipe 1 form a confluence region a at point a, and a bluff body 3 is set in confluence region a; bypass micropipe 5 and main micropipe 1 form another confluence region b at point b, and A bluff body 3 ′ is arranged in the confluence region b, and after the two liquids merge in the confluence region b, they continue to extend to form a common downstream micropipe 6 .

[0041] The basic working principle of this embodiment is: drive the first stream of liquid into the auxiliary micropipe 2, and when it is blocked by the first bluff body 3 in the first confluence area a, it can still flow in the bypass micropipe 5 Continue to flow until the signal generated by the sensor 4 completely removes the drivin...

Embodiment 3

[0044] Such as Figure 9 As shown, the present embodiment includes a main micropipe 1, an auxiliary micropipe 2 and a bypass micropipe 7 branched from the auxiliary micropipe 2, and the confluence region of the main micropipe 1 and the auxiliary micropipe 2 is provided with a blocking body 3. In this embodiment, the main micropipe 1 is used as an exhaust pipe, and the bypass micropipe 7 is used as a fusion pipe. The inlet end of the bypass pipe 7 is very close to the confluence area of ​​the main micropipe 1 and the auxiliary micropipe 2 .

[0045] This embodiment has the function of exhaust connection. When working, the liquid enters from the auxiliary micro-pipe 2 and is blocked by the choke body 3. At the same time, it automatically enters the bypass micro-pipe 7. At this time, part of the liquid will stay in a small section of pipeline between the bluff body 3 and the inlet of the bypass micropipe 7. If this section of pipeline is too long, when the liquid tail enters the...

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Abstract

The present invention relates to a flow path structure capable of controlling continuous flow of liquid in micropipeline. It includes a main micropipe and an auxiliary micropipe communicated with the described main micropipe. It is characterized by that in the confluent region of the described main micropipe and the described auxiliary micropipe a flow-resisting body is set. Said flow-resisting body can make the naturally-existed passive valve effect in the confluent region obtain effective enhancement, it can make first stream of liquid which is arrived at the flow-resisting body before second stream of liquid is not arrived temporarily stop flowing, and can promptly remove drive force of the first stream of liquid so as to implement bubble-free confluence of two streams of liquid after the second stream of liquid is arrived at the flow-resisting body.

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
Inventor 郭旻官晓胜周骋胡玉明程京
Owner CAPITALBIO CORP
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