Design and experimental investigation of a bi-directional valveless electromagnetic micro-pump

•Novel concept of an electromagnetic bi-directional valveless micro-pump based on a specific axial displacement of two magnet-discs.•The pumping direction of the fluid can be changed by inversing the currents of the coils, without changing the structure of the micro-pump.•Low-cost prototype of the p...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2018-04, Vol.272, p.310-317
Main Authors: Amrani, Ishaq, Cheriet, Ahmed, Feliachi, Mouloud
Format: Article
Language:English
Subjects:
Actuation
Bi-directional
Biomedical materials
Coiling
Coils
Electromagnetics
Electromagnets
Flow velocity
Fluid dynamics
Fluid flow
Magnetic fields
Magnetic force
Micro-pump
Micropumps
Permanent magnets
Prototypes
Studies
Valveless
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Summary:•Novel concept of an electromagnetic bi-directional valveless micro-pump based on a specific axial displacement of two magnet-discs.•The pumping direction of the fluid can be changed by inversing the currents of the coils, without changing the structure of the micro-pump.•Low-cost prototype of the proposed micro-pump is fabricated using conventional materials and elements.•Experimental tests confirm the high performances of the micro-pump. The experimental flow rate is 37 ml/mn with back pressure of 1.98 kPa. In this paper, a design of a novel electromagnetic micro-actuator prototype is presented. This prototype is fabricated using conventional elements for a novel working principle as bi-directional valveless micro-pump for biomedical applications. The proposed micro-pump includes two unfixed permanent magnets placed in opposite polarities in a cylindrical channel. The channel is placed between two fixed coaxial coils as external electromagnets. The electromagnetic actuating depends on moving both unfixed permanent magnets vertically via the interaction of their magnetic fields and that resulting from coils. The actuation of magnets is produced with a periodic movement and consists mainly of three main modes. By selecting a suitable coil’s driving currents, the actuation can be controlled either to change fluid flow direction or the actuation speed. An experimental test shows the high performance of the proposed micro-pump, a flow rate of 37 ml/mn and maximum back pressure of 1.98 kPa are attained.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2018.01.065