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A valveless reciprocating micropump

A main pipeline and elastic rod technology, applied in the field of microfluidics, can solve the problems of unsatisfactory micropump efficiency and difficulty in reaching the ideal level of output capacity, so as to facilitate mass production, improve stability and reliability, and overcome clogging problems. Effect

Inactive Publication Date: 2018-09-11
HAINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Previous research on valveless micropumps mainly focused on the characteristic analysis of contraction-expansion tube micropumps, and the coupling effect of the fluid itself and different channel structures has not been well considered. At the same time, in biomedicine and other practical In the field of micropumps, the efficiency of micropumps is often unsatisfactory, and the output capacity is difficult to reach the ideal level. Therefore, the output efficiency of micropumps and the working conditions of actual micropumps are still key issues to be solved.

Method used

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  • A valveless reciprocating micropump
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  • A valveless reciprocating micropump

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Embodiment Construction

[0020] A valveless reciprocating micropump, using PDMS as the material, through photolithography, development and other process steps to make the SU8 mold; then apply the PDMS material mixed with the curing agent on the mold, and then release the mold after heating and curing Obtain the PDMS negative mold; then apply the PDMS material mixed with the curing agent on the PC sheet, and then heat and cure it to release the mold to obtain a PDMS flat plate; assemble the linear elastic rod according to the requirements, and then bond the PDMS negative mold and the flat plate to obtain a microstructure That is the micropump structure.

[0021] The micropump includes an inlet pipe, an upper main pipe, a lower main pipe, a vertical linear elastic rod and a horizontal linear elastic rod, wherein the upper main pipe and the lower main pipe are connected together to form an "S"-shaped main pipe that needs to pump fluid, At the same time, the radius r2 of the inner tube of the main pipelin...

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Abstract

The invention discloses a no-valve reciprocating micro pump. The no-valve reciprocating micro pump comprises an inlet pipe, an upper main pipe, a lower main pipe, a vertical line elastic rod and a horizontal line elastic rod, wherein the upper main pipe and the lower main pipe are connected to form an S-shaped main pipe needed to pump a fluid; the fluid with a speed as a periodic sine function is introduced in the inlet pipe, and drives the line elastic rods to deform; and a certain inhibition effect on the fluid in the pipe is formed by the deformation of the line elastic rods, so that the net pumping flow from left and right is continuously increased. The no-valve reciprocating micro pump has the advantages of simple structure, no need of external voltage, good stability, low cost and convenience for mass production, and can finish high-efficiency fluid pumping.

Description

technical field [0001] The invention belongs to the field of microfluidics, is a valveless reciprocating micropump, and is a passive delivery device for pumping microfluids. Background technique [0002] In recent years, the microfluidic chip has become a hot research field. The chip is used as the operating platform for microfluidic analysis. At the same time, it relies on PDMS processing technology and uses the designed micropipeline network as the structural feature to complete the control of the fluid. And analysis is the focus of the development of the existing field. [0003] Microfluidic chips have the characteristics of small size, controllable flow fluid, less reagent consumption, high analysis efficiency, and low production cost, and are widely used in the fields of bioengineering, chemical analysis, energy power, aerospace, and medicine. Great prospects for development. [0004] In the fields of medicine and biology, micropumps can be used for the delivery of dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/16
CPCF04B53/16
Inventor 周腾王瀚林史留勇葛鉴张燕廖宇兰
Owner HAINAN UNIVERSITY
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