A Continuously Adjustable Bubble-Driven Valveless Micropump

An adjustable, micro-pump technology, applied in the direction of variable capacity pump components, pumps, pump components, etc., can solve the problems of inability to continuously adjust, low efficiency, large flow pulsation, etc., achieve stable power, low heat radiation, increase The effect of large pumping flow

Inactive Publication Date: 2017-07-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bubble-driven valveless micropump uses the principle of bubble dynamics to pump the fluid. It has the advantages of simple structure and convenient control, but it also has the disadvantages of low efficiency, large flow pulsation, and continuous adjustment.

Method used

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  • A Continuously Adjustable Bubble-Driven Valveless Micropump
  • A Continuously Adjustable Bubble-Driven Valveless Micropump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as Figure 1-2 As shown, a continuously adjustable bubble-driven valveless micropump includes a pump casing 1, a circular tubular pump core 2 installed in the pump casing 1, an integrated input tube shaft 3 installed at the left end of the circular tubular pump core 2, and a The integrated output tube shaft 4 at the right end of the tubular pump core 2, six micropump units 5 evenly arranged on the inner side wall of the tubular pump core 2; The end surface is connected to the rotating shaft; the outer surface of the tubular pump core 2 is provided with a drive gear 6, and the outside of the pump casing 1 is installed with a drive motor 7 whose output end meshes with the drive gear 6; the micropump unit 5 includes a heat-driven pump chamber 8 located in the middle , the suction passage 9 located at the left end of the heat-driven pump chamber 8 and connected with the heat-driven pump chamber 8, the discharge passage 10 located at the right end of the heat-driven pum...

Embodiment 2

[0024] The difference between this embodiment and Embodiment 1 is that: the inner wall of the pump casing 1 is equipped with an electromagnetic heating circuit corresponding to the position of the heat-driven pump chamber 8, and the electromagnetic heating circuit consists of a power supply, a switch connected in series in the circuit, an adjustable resistor, The magnetic induction coil is formed; the position of the magnetic induction coil is matched with the heat-driven pump chamber 8; the outer wall of the heat-driven pump chamber 8 is made of ferritic stainless steel.

[0025] In this embodiment, the outer wall of the heat-driven pump chamber 8 is made of ferritic stainless steel with good magnetic conductivity. The purpose is to cooperate with the principle of the electromagnetic heating circuit and use eddy current to achieve heating. The electromagnetic heating circuit has a shorter reaction time than resistance heating. , the local heating speed is fast, the influence o...

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Abstract

The invention discloses a continuously-adjustable type bubble driven valve-less micropump, and relates to the technical field of electric driven liquid pumps. The continuously-adjustable type bubble driven valve-less micropump comprises a pump shell, a circular-tube-shaped pump core installed in the pump shell, an integrated input pipe shaft installed at the left end of the circular-tube-shaped pump core, an integrated output pipe shaft installed at the right end of the circular-tube-shaped pump core and at least four micropump units evenly arranged on the side wall of the interior of the circular-tube-shaped pump core; each micropump unit comprises a heat driving pump cavity located in the middle portion, a suction channel located at the left end of the heat driving pump cavity and communicated with the heat driving pump cavity and a discharging channel located at the right end of the heat driving pump cavity and communicated with the heat driving pump cavity; each suction channel is communicated with the integrated input pipe shaft; each discharging channel is communicated with the integrated output pipe shaft; and electric control heating devices corresponding to the heat driving pump cavities in position are installed on the inner wall of the pump shell. According to the continuously-adjustable type bubble driven valve-less micropump, the micropump output pressure flow is continuously adjustable, and the micropump energy conversion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electric-driven liquid pumps, in particular to a valveless micropump. Background technique [0002] The invention relates to a continuously adjustable bubble-driven valveless micropump; the microfluidic driving and control technology is a key technology to be faced in the development of a micro-electromechanical system (MEMS). As the main power device, the micropump has the advantages of miniaturization, low energy consumption and high integration, and has broad application prospects in the fields of biomedicine, chemical analysis, aerospace, automobile and environmental monitoring. The bubble-driven valveless micropump uses the principle of bubble dynamics to pump fluid. It has the advantages of simple structure and convenient control, but it also has the disadvantages of low efficiency, large flow pulsation, and non-continuous adjustment. This patent proposes a continuously adjustable bubble-driven val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B43/04F04B53/08
CPCF04B43/0027F04B43/043F04B53/08
Inventor 周俊杰苑士华胡纪滨屈扬
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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