KR101766712B1 - Electroosmotic Pump By Means Of Membrane Electrode Assembly For Fluid moving - Google Patents

Electroosmotic Pump By Means Of Membrane Electrode Assembly For Fluid moving Download PDF

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KR101766712B1
KR101766712B1 KR1020150121023A KR20150121023A KR101766712B1 KR 101766712 B1 KR101766712 B1 KR 101766712B1 KR 1020150121023 A KR1020150121023 A KR 1020150121023A KR 20150121023 A KR20150121023 A KR 20150121023A KR 101766712 B1 KR101766712 B1 KR 101766712B1
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South Korea
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electrode
fluid
membrane
voltage
electroosmotic
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KR1020150121023A
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Korean (ko)
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KR20170025091A (en
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정태훈
김재진
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중소기업은행
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/006—Micropumps

Abstract

One embodiment of the present invention is an electroosmotic pump for fluid transfer using a membrane electrode assembly, comprising: a fluid path (10) as a passage through which a fluid flows; a first electrode (201) for generating ions by a redox reaction; And a membrane (203) through which the fluid located between the first electrode (201) and the second electrode (202) passes, and a second electrode (202) A power supply unit 40 for applying a voltage to each of the plurality of electric osmosis cells 200 and a plurality of electric osmosis cells 200 disposed between the plurality of electric osmosis cells 200, And an insulating layer (30) for insulating an electrical reaction between the osmotic cells (200) and eliminating an alternating action, so that the electroosmotic cells (200) are laminated to form an electroosmotic module (20) Used oil It provides a portable electric osmotic pump.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electroosmotic pump for membrane-

The present invention relates to an electroosmotic pump for fluid transfer using a membrane electrode assembly, and more particularly to a stacked electroosmotic pump composed of a first electrode, a second electrode, a membrane, and an insulating layer, The fluid is moved due to the generation and consumption of cations due to the oxidation reaction proceeding at the first electrode and the reduction reaction proceeding at the second electrode, and the fluid for moving the fluid using the membrane electrode composite in which the electrode maintains the original state due to the reversible reaction Lt; / RTI > pump.

The electroosmosis phenomenon is a pump that utilizes fluid movement that occurs when a voltage is applied to both ends of a capillary or a porous membrane. Therefore, when a pump is constructed using electroosmosis, an electrode for applying a voltage to both ends of the porous separator must be used.

Although platinum which is chemically stable is generally used as a material of the electrode, platinum has a low hydrogen overpotential to water, and hydrogen gas is generated at the reducing electrode when a potential difference of several volts or more is applied to both ends of the porous separator. This gas generation is an important factor limiting the practical use of the electroosmotic pump.

In addition to the gas generation at the electrode, the practical application of the electroosmotic pump is limited due to the change of the pH due to the oxidation / reduction reaction during the operation of the electroosmosis pump and the problem of using high pressure in order to generate high pressure.

Among the above-mentioned problems, the problem of gas generated in the electrode has been solved by introducing a substance capable of being oxidized and reduced into the electrode itself. However, these electrodes have been made of silver (Ag), silver oxide (AgO) ), Polyaniline and the like are used.

Also, in order to increase the pressure generated by the electrode, zwitterion (zwitterion) is added to the working fluid, or a cascade pump structure in which the membrane and the electrode are connected in a multi-stage series connection There is also a proposed bar.

As described above, the electroosmotic pump has been improved in the direction of improving the performance of the electrode, the direction of improving the material and porosity of the porous separator, and the direction of improving the composition of the working fluid of the pump among the components of the pump.

The electrolyte solution is stored in Korean Patent No. 10-1106286 (the name of the invention: an electroosmotic drug pump and its system, hereinafter referred to as Prior Art 1), and a driving unit for pumping the drug, a driving unit provided between the driving units, A porous glass slit diaphragm for separating the first and second spaces into a first space and a second space and forming a concentration gradient by passing ions therethrough to move the solvent or the solution; a drug storage portion for storing the drug; At least one micro needle arranged to protrude through the outer membrane of the reservoir and inserted into the skin to immobilize the drug, a first space, both electrodes inserted in the second space, and both electrodes, An electric osmotic drug pump comprising an integral power supply unit including a power supply unit capable of applying an electric osmotic drug.

Korean Patent No. 10-1106286

SUMMARY OF THE INVENTION The present invention provides an electroosmotic pump capable of generating a high pressure at a low voltage, and is intended to solve the problem that it is not effective in increasing and decreasing the flow rate.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. There will be.

According to an aspect of the present invention, there is provided an electroosmotic pump for fluid transfer using a membrane electrode assembly, comprising: a fluid passage (10) as a passage through which a fluid flows; A first electrode 201 and a second electrode 202 on which a positive ion is consumed, a membrane through which the fluid located between the first electrode 201 and the second electrode 202 passes A power supply unit 40 for applying a voltage to each of the electric osmotic cells 200, an electric osmosis module 20 installed inside the fluid passage 10, a plurality of electric osmosis cells 200 including the electric osmosis cells 200, The plurality of electric osmotic cells 200 may include an insulating layer 30 interposed between the plurality of electric osmotic cells 200 to isolate an electrical reaction therebetween to remove alternating action. The electric osmosis module 20 Provides a fluid pump for moving electrical osmosis using a membrane electrode assembly, characterized in that where the lure.

The membrane 203 of the fluid osmotic pump using the membrane electrode assembly of the present invention is an organic or inorganic material that has a high zeta potential so that the flow rate of the fluid is constant. Electroosmotic pump for fluid movement.

In addition, the power supply unit 40 of the osmotic pump for fluid transportation using the membrane electrode assembly of the present invention may apply a voltage such that electric fields of the plurality of electric osmosis modules 20 are the same.

The power supply unit 40 of the osmotic pump for fluid transportation using the membrane electrode assembly of the present invention may be configured to apply a direct current (DC) voltage or an alternating current (AC) voltage.

In addition, when a direct current (DC) voltage is applied to the fluid-transporting electroosmotic pump using the membrane electrode assembly of the present invention, the reversible reaction is performed with a predetermined period.

When an AC voltage is applied to the fluid transport osmotic pump using the membrane electrode assembly of the present invention, a voltage is alternately applied to the first electrode 201 and the second electrode 202 .

In addition, the membrane 203 of the osmotic pump for fluid movement using the membrane electrode assembly of the present invention may be characterized by being made of a porous material.

Also, the electrode composite of the osmotic pump for fluid transportation using the membrane electrode composite of the present invention may be characterized by being made of a porous material or a structure.

In addition, the insulating layer 30 of the osmotic pump for fluid movement using the membrane electrode assembly of the present invention may be characterized by being made of a porous material or a structure.

In addition, the material of the electrode composite of the fluid transport electroosmotic pump using the membrane electrode composite of the present invention is a carbon structure coated with gold, silver, platinum, carbon, carbon nanotube, graphene, carbon nanoparticle fullerene, graphite or conductive polymer And at least one kind selected from the group consisting of:

The conductive polymer of the electroosmotic pump for fluid transport using the membrane electrode assembly of the present invention may be a polyaniline, a polypyrrole, a polythiophene, a polythionine, or a quinone polymer. And a combination thereof. [0028] The term " a "

Also, in the unidirectional driving method of an osmotic pump for fluid movement using the membrane electrode assembly of the present invention, the power source unit 40 can apply a voltage to the first electrode as an anode and the second electrode as a cathode. Second, when the power supply unit 40 applies a voltage, the first electrode 201 may perform an oxidation reaction and the second electrode 202 may perform a reduction reaction. Third, the positive ions generated in the first electrode 201 in the second stage move to the second electrode 202 in order to balance the charge, and the fluid flows to the first electrode 201, the membrane 203, The second electrode 202 can be sequentially passed. Fourthly, after the third step, the fluid may pass through the insulating layer 30. Fifth, the fluid may pass through the electroosmotic module 20, and the fluid may repeat the first to fourth steps.

Further, in the unidirectional driving method for an osmotic pump for fluid movement using the membrane electrode assembly of the present invention, the anode and the cathode are alternately applied to the first electrode and the second electrode, respectively, so that the fluid moves in the opposite direction.

In addition, in the bi-directional driving method of the osmotic pump for fluid movement using the membrane electrode assembly of the present invention, the power source unit 40 may apply a voltage to the first electrode as an anode and the second electrode as a cathode. Second, when the power supply unit 40 applies a voltage, the first electrode 201 may perform an oxidation reaction and the second electrode 202 may perform a reduction reaction. Third, the cation generated in the first electrode 201 in the second stage moves to the second electrode 202 in order to balance the charge, so that the fluid flows into the first electrode 201, the membrane 203, The electrode 202 can be sequentially passed through. Fourth, the fluid of the third stage can pass through the insulating layer 30. Fifth, the fluid may pass through the electroosmosis module 20 by repeating the first to fourth steps. Sixth, the voltage may be reversely applied with the first electrode 201 as a cathode and the second electrode 202 as an anode according to a predetermined period. Seventh, when the power supply unit 40 applies a voltage, the oxidation reaction may occur at the second electrode 202, and the reduction reaction may occur at the first electrode 201. Eighth, the cation generated in the seventh-stage second electrode 202 moves to the first electrode 201 in order to balance the charge, and the fluid flows to the second electrode 202, the membrane 203 and the first electrode 201) sequentially. Ninth, the fluid of the eighth step can pass through the insulating layer 30. [ In the tenth, the fluid may pass through the electroosmosis module 20 by repeating the seventh to ninth steps, and the fluid may reciprocate by repeating the first to tenth steps.

Further, in the bidirectional driving method of the fluid-transporting electroosmotic pump using the membrane electrode assembly of the present invention, since the first to tenth steps are repeatedly performed, the original state is maintained due to the reversible reaction at the first electrode and the second electrode .

According to the embodiment of the present invention, it is possible to realize a high pressure at a low voltage compared to a conventional electroosmotic pump in a structure in which the electroosmotic cells 200 are stacked.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a schematic diagram showing an embodiment of the electroosmotic module of the present invention.
2 is a schematic diagram showing an embodiment of the electroosmotic pump of the present invention.
3 is a schematic diagram showing an embodiment of the electroosmotic pump of the present invention.
4 is a graph showing a difference in pressure according to the number of stacked layers of the electroosmotic module of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" (connected, connected, coupled) with another part, it is not only the case where it is "directly connected" "Is included. Also, when a part is referred to as "comprising ", it means that it can include other components as well, without excluding other components unless specifically stated otherwise.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an electroosmotic pump for fluid movement using a membrane 203 electrode composite of the present invention.

In the electroosmotic pump for fluid transfer using a membrane (203) electrode composite, a fluid transfer path (10) as a passage through which a fluid flows, a first electrode (201) where ions are generated by a redox reaction, And a membrane 203 through which a fluid located between the first electrode 201 and the second electrode 202 passes, and an electrode assembly 200 including the second electrode 202, A plurality of electric osmosis modules 20 installed in the fluid path 10, a power source 40 for applying a voltage to each of the electric osmosis cells 200, and a plurality of And an insulating layer 30 for insulating the electrical reaction between the plurality of electric osmosis cells 200 to eliminate alternating action, thereby stacking the electric osmosis cells 200, thereby forming the electroosmotic module 20. FIG.

The fluid path 10 may have a shape in which a fluid can be filled and flowed, and the shape of a cylinder, a prism, or a polyhedron is not excluded. It may also have an inlet and an outlet through which fluids can flow in and out. As a result, the pressure provided by the electroosmotic pump can be transmitted to the outside.

The membrane 203 is an organic or inorganic material that has a high zeta potential and makes the flow rate of the fluid constant, and may be formed of a porous material. It is not excluded that the membrane 203 has various shapes such that the shape of the membrane 203 is such that the fluid can flow. As the material of the membrane 203, a large amount of silica, glass, or the like is used. In the membrane 203 made of such a material, the surface is negatively charged in the aqueous solution. At this time, the positive ions can easily pass through the membrane 203 due to the attraction between the membrane 203 and the membrane 203, so that the electrochemical reaction rate of the electrode can be improved. Therefore, the fluid can be smoothly moved, so that an efficient and stable electroosmotic pump can be realized. The zeta potential is an electrodynamic potential difference derived from the positive charge density difference in the diffusion double layer. It is also called a zeta potential. By using such a material having a high zeta potential, fluid stability can be obtained. As a result, The effect to be maintained can be obtained.

The electrode composite may include a first electrode 201 and a second electrode 202. The electrode composite may have a structure in which a fluid can flow in a porous shape. The first electrode 201 and the second electrode 202 have a porous shape. When the oxidation and reduction reactions occur, a fluid filling the inside of the electroosmotic pump and a material difficult to be corroded by oxygen present in the atmosphere May be used. And a carbon structure coated with gold, silver, platinum, carbon, carbon nanotubes, graphene, carbon nanoparticle fullerene, graphite or a conductive polymer, but is limited to only one kind or more It is not. The conductive polymer may be at least one selected from the group consisting of polyaniline, polypyrrole, polythiophene, polythionine, quinone polymer, and combinations thereof. . ≪ / RTI > However, the material of the conductive polymer is not limited thereto.

For example, when the first electrode 201 is an anode and the second electrode 202 is a cathode, generation of a positive ion occurs in the first electrode 201 and the second electrode 202, When the electrolyte is applied, the fluid and the anode react with each other in the electrode composite to cause oxidation, and a reduction reaction may occur in the cathode. At this time, positive ions are generated by the oxidation reaction, and positive ions are allowed to flow in the negative direction so that the fluid may flow along the negative electrode. The velocity of the fluid can be changed according to the kind of the generated cation and the performance of the electroosmotic pump can be improved when the cation having a fast movement such as hydrogen ion is generated.

Since the electroosmotic module 200 has the structure in which the electroosmotic cells 200 are stacked, the flow of the fluid increases in proportion to the number of the electroosmotic cells 200 stacked with the pressure, The performance of the osmotic pump can be further improved. Can be confirmed in the following experimental examples and examples.

The electrodes of the respective electroosmotic cells 200 may cause an electrical reaction in the process of stacking the electroosmotic cells 200. In order to prevent this, 30). The insulating layer 30 functions to suppress the electrical reaction between the electroosmotic cells 200 and prevent the electric field from being formed between the electroosmotic cells 200, thereby holding the flow of the fluid in a predetermined direction. In addition, the insulating layer 30 may be made of a porous material or a structure so that fluid can flow, and it is preferable to use a material having a high electric resistance.

The power supply unit 40 applies a voltage so that the electric omnidirectional cells 200 have the same electric field direction, whereby the flow direction of the fluid can be the same. For example, if the first electrode 201 of one electroosmotic cell 200 is a positive electrode and the second electrode 202 has a negative electrode, the first electrode 201 and the second electrode 201 of the remaining electroosmotic cells 200 202 have the same polarity so that the directions of the electric fields can all be the same.

Also, the power supply unit 40 may be configured to apply a direct current (DC) voltage or an alternating current (AC) voltage. When a DC voltage is used, a toggle switch for changing the direction of the voltage may be additionally provided to change the direction of the voltage. For example, when the first electrode 201 is a positive electrode and the second electrode 202 is a negative electrode, the direction of the direct current voltage is changed so that the first electrode 201 is changed to the negative electrode and the second electrode 202 is changed to the positive electrode This may cause reversible reaction in the electroosmotic pump, and thus the flow direction of the fluid may be changed. A voltage is alternately applied to the first electrode 201 and the second electrode 202 when an AC voltage is applied, so that the flow of the fluid can be controlled.

The redox reaction between the first electrode 201 and the second electrode 202 reversibly occurs as the power source unit 40 applies the voltage alternately and the original state can be maintained continuously.

Hereinafter, a one-directional driving method of a fluid-transporting electroosmotic pump using the membrane electrode assembly of the present invention will be described. First, the power source 40 may apply a voltage to the first electrode as an anode and the second electrode as a cathode. Second, when the power supply unit 40 applies a voltage, the first electrode 201 may perform an oxidation reaction and the second electrode 202 may perform a reduction reaction. Third, the positive ions generated in the first electrode 201 in the second stage move to the second electrode 202 in order to balance the charge, and the fluid flows to the first electrode 201, the membrane 203, The second electrode 202 can be sequentially passed. Fourthly, after the third step, the fluid may pass through the insulating layer 30. Fifth, the fluid may pass through the electroosmotic module 20, and the fluid may repeat the first to fourth steps. When the fluid passes through the electroosmotic module 20, the step of passing through the insulating layer may be omitted because there is no insulating layer at the end of the last electroosmotic cell.

In addition, the positive electrode and the negative electrode are applied to the first electrode and the second electrode, respectively, so that the fluid moves in the opposite direction.

Hereinafter, a bi-directional driving method of an osmotic pump for fluid transportation using the membrane electrode assembly of the present invention will be described. First, the power source 40 may apply a voltage to the first electrode as an anode and the second electrode as a cathode. Second, when the power supply unit 40 applies a voltage, the first electrode 201 may perform an oxidation reaction and the second electrode 202 may perform a reduction reaction. Third, the cation generated in the first electrode 201 in the second stage moves to the second electrode 202 in order to balance the charge, so that the fluid flows into the first electrode 201, the membrane 203, The electrode 202 can be sequentially passed through. Fourth, the fluid of the third stage can pass through the insulating layer 30. Fifth, the fluid may pass through the electroosmosis module 20 by repeating the first to fourth steps. Sixth, the voltage may be reversely applied with the first electrode 201 as a cathode and the second electrode 202 as an anode according to a predetermined period. Seventh, when the power supply unit 40 applies a voltage, the oxidation reaction may occur at the second electrode 202, and the reduction reaction may occur at the first electrode 201. Eighth, the cation generated in the seventh-stage second electrode 202 moves to the first electrode 201 in order to balance the charge, and the fluid flows to the second electrode 202, the membrane 203 and the first electrode 201) sequentially. Ninth, the fluid of the eighth step can pass through the insulating layer 30. [ In the tenth, the fluid may pass through the electroosmosis module 20 by repeating the seventh to ninth steps, and the fluid may reciprocate by repeating the first to tenth steps. When the fluid passes through the electroosmotic module 20, the step of passing through the insulating layer may be omitted because there is no insulating layer at the end of the last electroosmotic cell.

Also, since the first to tenth steps are repeatedly performed, the original state is maintained due to the reversible reaction at the first electrode and the second electrode.

Hereinafter, the effects of the present invention will be described in detail through comparative examples, examples and experimental examples of the present invention. First, the lamination structure of the electroosmotic pump will be described with reference to Comparative Examples, Examples and Experimental Examples.

≪ Example 1 >

A membrane (203) for making an electroosmotic pump is prepared. 4 g of spherical silica having a diameter of 300 nm, 1 g of phosphoric acid and 100 ml of water were stirred and ultrasonically dispersed to prepare a suspension. The suspension was dried in an oven at 90 캜 for 24 hours to evaporate water, . This silica mass was pulverized and press-formed by a press to prepare a 10 mm disk shape, and the silica membrane was fired at a temperature of 1000 캜 in a firing furnace to produce a silica membrane (203). Three electrodes were prepared by mounting a carbon electrode coated with polyaniline on both sides of the membrane 203 and bonding an electrode and an outer circumferential surface of the membrane 203 with an epoxy resin to form three electroosmotic cells 200, And an insulating layer 30 is laminated on the insulating layer 30 to produce an electroosmotic module 20. [ And an electric osmotic pump was manufactured by connecting the power source unit 40 to the electroosmotic module 20.

≪ Comparative Example 1 &

A membrane (203) for making an electroosmotic pump is prepared. 4 g of spherical silica having a diameter of 300 nm, 1 g of phosphoric acid and 100 ml of water were stirred and ultrasonically dispersed to prepare a suspension. The suspension was dried in an oven at 90 캜 for 24 hours to evaporate water, . This silica mass was pulverized and press-formed by a press to prepare a 10 mm disk shape, and the silica membrane was fired at a temperature of 1000 캜 in a firing furnace to produce a silica membrane (203). A carbon electrode coated with polyaniline is mounted on both sides of the membrane 203 and an outer circumferential surface of the electrode and the membrane 203 is bonded with an epoxy resin to fabricate an electric osmotic cell 200. The electric osmotic cell 200 is connected to an electric osmotic cell 200 ) Was manufactured.

<Experimental Example 1>

Voltage values of 0.5 V, 1 V, 1.5 V, and 2 V were applied to Example 1 and Comparative Example 1, respectively, and the pressure change with respect to the fluid flow was measured using a manometer (Mana 2200). This is shown in Table 1 and FIG.

Comparative Example 1 Example 1 0.5V 3.2 kPa 9.1 kPa 1V 4.2 kPa 12.5 kPa 1.5V 5.5 kPa 16.2 kPa 2V 6.6 kPa 19.7 kPa

It can be seen from Experimental Example 1 that the electroosmotic pump of the present invention has a pressure about three times higher than that of the electroosmotic pump of Comparative Example 1. As a result, it is confirmed that the electroosmotic pump 200 is more efficient than the conventional electroosmotic pump by stacking the electroosmotic cells 200. Of course, since the efficiency increases more when the number of the electroosmotic cells 200 is increased with respect to the laminated structure, it is possible to adjust the number of the stacked layers according to the intended use, thereby confirming that the efficiency of the electroosmotic pump is improved.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10: fluid flow path
20: Electric osmosis module
200: Electric osmosis cell
201: first electrode
202: second electrode
203: Membrane
30: insulating layer (30)
40: Power supply unit 40
A1 to A4: Experimental results for Example 1
B1 to B4: Experimental results for Comparative Example 1

Claims (15)

In an electroosmotic pump for fluid movement using a membrane electrode composite,
A fluid passage (10) as a passage through which the fluid flows;
An electrode composite including a first electrode 201 where ions are generated by oxidation-reduction reaction and a second electrode 202 where ions are consumed; a first electrode 201 formed between the first electrode 201 and the second electrode 202 An electroosmotic module (20) installed inside the fluid path (10) with a plurality of electroosmotic cells (200) comprising a membrane (203) through which a fluid located in the fluid passage (10) passes;
And a power supply unit (40) for applying a voltage to each of the electroosmotic cells (200)
And an insulating layer (30) interposed between the plurality of electric osmotic cells (200) to insulate the electric reaction between the plurality of electric osmotic cells (200) to eliminate alternating action, The electric osmosis module 20 is formed,
Wherein the power supply unit applies a voltage such that the electric field direction between the first electrode (201) and the second electrode (202) of each of the plurality of electroosmotic modules (20) Electroosmotic pump for fluid transport using.
The method according to claim 1,
Wherein the membrane (203) is an organic or inorganic material that has a high zeta potential to keep the flow rate of the fluid constant.
delete The method according to claim 1,
Wherein the power supply unit (40) applies a direct current (DC) voltage or an alternating current (AC) voltage.
The method of claim 4,
And a voltage is reversely applied to the first electrode (201) and the second electrode (202) according to a predetermined period when the direct current (DC) voltage is applied. Pump.
The method of claim 4,
And a voltage is alternately applied to the first electrode (201) and the second electrode (202) when the AC voltage is applied to the membrane electrode assembly.
The method according to claim 1,
Wherein the membrane (203) is made of a porous material.
The method according to claim 1,
Wherein the first electrode (201) and the second electrode (202) are made of a porous material or a structure.
The method according to claim 1,
Wherein the insulating layer (30) is made of a porous material or a structure.
The method according to claim 1,
The material of the first electrode 201 and the second electrode 202 may be selected from the group consisting of a carbon structure coated with gold, silver, platinum, carbon, carbon nanotube, graphene, carbon nanoparticle fullerene, graphite or conductive polymer Wherein the membrane electrode assembly is made of one or more selected from the group consisting of a metal oxide and a metal oxide.
The method of claim 10,
The conductive polymer may include one or more selected from the group consisting of polyaniline, polypyrrole, polythiophene, polythionine, quinone polymer, and combinations thereof Electroosmotic pump for fluid transport using membrane electrode composite.
A method for unidirectionally driving an osmotic pump for fluid movement using the membrane electrode assembly of claim 1,
i) applying a voltage by the power supply unit 40 to the first electrode as a positive electrode and the second electrode as a negative electrode;
ii) an oxidation reaction occurs in the first electrode 201 and a reduction reaction occurs in the second electrode 202 when the power source unit 40 applies a voltage;
iii) the cation generated in the first electrode 201 in the step ii) is moved to the second electrode 202 in order to balance the charge, so that the fluid flows to the first electrode 201, the membrane 203, And the second electrode (202) sequentially;
iv) after the step iii), the fluid passes through the insulating layer 30
v) passing the fluid through the electroosmotic module (20);
Being made to include the
Wherein the fluid is repeatedly subjected to the steps i) to iv), and the one-directional driving method of the electroosmotic pump for fluid transportation using the membrane electrode composite
The method of claim 12,
Wherein the positive electrode and the negative electrode are applied to the first electrode and the second electrode, respectively, so that the fluid moves in the opposite direction.
A bi-directional driving method of an osmotic pump for fluid movement using the membrane electrode composite of claim 1,
a) applying a voltage to the first electrode as a positive electrode and the second electrode as a negative electrode;
b) an oxidation reaction occurs in the first electrode 201 and a reduction reaction occurs in the second electrode 202 when the power source unit 40 applies a voltage;
c) cations generated in the first electrode 201 in the step b) are transferred to the second electrode 202 in order to balance the charge, so that the fluid flows to the first electrode 201, the membrane 203, And the second electrode (202) sequentially;
d) passing the fluid of step c) through the insulating layer 30;
e) repeating the steps a) through d) of passing the fluid through the electroosmosis module (20);
f) applying a reverse voltage to the first electrode (201) as a cathode and the second electrode (202) as an anode according to a predetermined period;
g) an oxidation reaction in the second electrode 202 and a reduction reaction in the first electrode 201 when the power source unit 40 applies a voltage;
h) cations generated in the second electrode 202 of the step g) are moved to the first electrode 201 to balance the charge, and the fluid flows to the second electrode 202, the membrane 203 ) And the first electrode (201) sequentially;
i) passing the fluid of step h) through the insulating layer 30;
j) the fluid is passed through the electroosmotic module (20) in reverse by repeating steps g) to i);
Being made to include the
Wherein the fluid is reciprocated by repeating the steps a) to j). &Lt; Desc / Clms Page number 20 &gt;
15. The method of claim 14,
Wherein the step of performing the steps a) to j) is repeated to maintain the original state due to the reversible reaction at the first electrode and the second electrode. The bi-directional driving of the electroosmotic pump for fluid transportation using the membrane electrode composite Way.
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KR102547256B1 (en) * 2018-02-13 2023-06-23 (주)포인트엔지니어링 Electroosmotic pump
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