KR101732659B1 - Functional water producing device using reversible polymer electrolyte membrane fuel cell - Google Patents

Abstract

The present invention relates to a functional water manufacturing device using a reversible polymer electrolyte membrane fuel cell and, more specifically, relates to a functional water manufacturing device using a reversible polymer electrolyte membrane fuel cell, capable of calculating and displaying a dissolved hydrogen concentration of functional water by selectively generating oxygen water and hydrogen water in an electrolysis mode and measuring generated electromotive force in a fuel cell mode. The functional water manufacturing device includes: a fuel cell part (110) including an anode, a cathode, and a polymer electrolyte membrane between the anode and the cathode, generating hydrogen gas or oxygen gas in an electrolysis mode, and generating electromotive force in a fuel cell mode; a functional water storage part (120) generating and storing hydrogen water or oxygen water by dissolving the hydrogen gas or oxygen gas in water; an ultrasonic part (130) generating mist by making ultrasonic vibrations in the water; a gas collecting part (140) collecting the hydrogen gas or oxygen gas undissolved in the functional water storage part (120); and a control part (150) controlling the fuel cell part (110) and the ultrasonic part (130). A dissolved hydrogen concentration of the hydrogen water, stored in the functional water storage part (120), is measured by using the electromotive force generated in the fuel cell mode executed by the fuel cell part (110).

Description

Technical Field [0001] The present invention relates to a functional water producing device using a reversible polymer electrolyte membrane fuel cell,

More particularly, the present invention relates to a portable functional water producing apparatus, and more particularly to a reversible polymer electrolyte membrane fuel cell that selectively generates hydrogen and oxygen in an electrolysis mode, measures electromotive force generated in a fuel cell mode, And more particularly, to a functional water producing apparatus using a reversible polymer electrolyte membrane fuel cell.

Generally, hydrogen is represented by "H" and refers to atomic hydrogen, but what we are referring to as "H2" is hydrogen in the molecular state. Hydrogen is known to easily combine with active oxygen to detoxify active oxygen causing various diseases. Although 2% of the oxygen used to make energy in the body is active oxygenated, if active hydrogen is always present in the active oxygenation site, active oxygen is the cause of the disease (90% of the causes of all diseases are active oxygen .) Will not occur in principle.

As a conventional invention for producing (or generating / generating) such hydrogenated water, Japanese Patent No. 0274106 discloses a pure water containing dissolved hydrogen at a concentration of 0.1 ppm or more, and the water is added to the anode water obtained from sodium phosphate or an anode Electrolytic hydrogen dissolved water whose pH is adjusted to 7.2 to 7.3 and the oxidation-reduction potential of the water is +100 mV or lower is used for the application selected from the group of a) to b) Hydrogen dissolved water is disclosed and produces electrolytic hydrogen dissolved water by a conventional electrolysis method.

On the other hand, in Patent Publication No. 1076631, hydrogen is generated by purifying raw water and then electrolyzed, or hydrogen is generated by dissolving a metal salt such as magnesium in water or hydrogen filled in a bomb (pressure vessel) The present invention discloses a hydrogen-water producing apparatus for producing hydrogen-water which can be used for water, beverage, medical, agricultural and industrial purposes to be melted and consumed. In the above-mentioned invention, There is a problem in that scale is generated in the negative electrode plate according to the supply box continuously and there is a limit in removing residual chlorine and hypochlorite ions to the produced hydrogen water and the production of total trihalomethane can not be suppressed.

On the other hand, in the conventional hydrogen water producing apparatus, the concentration of dissolved hydrogen in the hydrogen water is measured by a polarography sensor and a redox potential difference sensor. Since the sensor structure is complicated and expensive, And it has many problems to be applied to general purpose such as sensor storage and sensor correction.

In order to solve the problems of the prior art as described above, the present invention uses a fuel cell mode of a reversible polymer electrolyte membrane fuel cell, so that it is unnecessary to additionally install an expensive dissolved hydrogen concentration measuring sensor, It is aimed to measure and display dissolved hydrogen concentration.

Unlike the conventional membrane electrode assembly (MEA), which is a component of a general polymer electrolyte membrane fuel cell, the present invention does not employ a gas diffusion layer. The fuel cell function is minimized to limit the concentration of dissolved hydrogen, There is another purpose of maximizing the electrolysis function for the purpose of generating water.

In addition, unlike a conventional electrolyte membrane of a conventional electrode membrane assembly, the electrolyte membrane is damaged when the polarity of the electrolyte is changed, and the electrolyte membrane is composed of an electrode membrane assembly coated with the same platinum catalyst on both sides of the electrolyte membrane. -) pole to change the polarity so that the user can obtain the desired number of functions (water or oxygen).

The above object of the present invention can be also achieved by a functional water producing apparatus comprising a polymer electrolyte membrane positioned between an oxidizing electrode and a reducing electrode and between the oxidizing electrode and the reducing electrode and generating hydrogen gas or oxygen gas in an electrolysis mode, A fuel cell unit 110 for generating an electromotive force in a mode; A functional water reservoir 120 for dissolving the hydrogen gas or the hydrogen gas in water to generate and store hydrogen or oxygen water; An ultrasonic wave unit 130 for ultrasonic vibration of water to generate a mist; A gas capture container (140) for capturing hydrogen gas or oxygen gas not dissolved in the functional water reservoir (120); And a control unit 150 for controlling the fuel cell unit 110 and the ultrasonic unit 130. The electromotive force generated in the fuel cell mode performed by the fuel cell unit 110 may be used to control the function of the functional water- And the dissolved hydrogen concentration of the hydrogen stored in the hydrogen storage tank (120) is measured. The functional water producing apparatus using the reversible polymer electrolyte membrane fuel cell.

Therefore, the functional water producing apparatus using the reversible polymer electrolyte membrane fuel cell of the present invention is capable of measuring and displaying the dissolved hydrogen concentration of functional water inexpensively and easily, without needing to further constitute an expensive dissolved hydrogen concentration measuring sensor .

In addition, since the present invention aims at the production of functional water, the fuel cell function of the polymer electrolyte membrane fuel cell is minimized so as to be limited to the measurement of the dissolved hydrogen concentration, and other effects of maximizing the electrolysis function and inducing production of high quality functional water have.

In addition, the present invention can be applied to an electrode membrane assembly in which a platinum catalyst is coated on both surfaces of an electrolyte membrane, thereby making it possible to easily obtain a desired functional number (hydrogen or oxygen number) by changing the (+ It is effective.

1 is a configuration diagram of a functional water producing apparatus using a reversible polymer electrolyte membrane fuel cell according to the present invention,
2 is an operational schematic diagram of a functional water producing apparatus using a reversible polymer electrolyte membrane fuel cell according to the present invention,
FIG. 3 is a graph showing the relationship between the concentration of dissolved oxygen and dissolved hydrogen for each operation time, which is obtained by changing the (+) and (-) poles at two electrodes in the electrolysis mode according to an embodiment of the present invention,
FIG. 4 is a graph showing a correlation between a dissolved hydrogen concentration and a voltage value measured in a fuel cell mode according to an embodiment of the present invention. FIG.
FIG. 5 is a graph showing the dissolved hydrogen concentration according to whether the ultrasonic mode is operated according to an embodiment of the present invention. FIG.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

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

FIG. 1 is a configuration diagram of a functional water producing apparatus using a reversible polymer electrolyte membrane fuel cell according to the present invention, and FIG. 2 is a schematic operational view of a functional water producing apparatus using a reversible polymer electrolyte membrane fuel cell according to the present invention. 3 is a graph showing the relationship between the concentration of dissolved oxygen and dissolved hydrogen for each operation time, which is obtained by changing the (+) and (-) poles to two electrodes in the electrolysis mode according to an embodiment of the present invention, FIG. 4 is a graph showing a correlation between a dissolved hydrogen concentration and a voltage value measured in a fuel cell mode according to an embodiment of the present invention. FIG. 5 is a graph showing a relationship between dissolved hydrogen concentration and a voltage value according to an embodiment of the present invention. Fig. 1 and 2, the functional water production apparatus 100 using the reversible polymer electrolyte membrane fuel cell of the present invention includes an oxidation electrode, a reduction electrode, and a polymer electrolyte membrane positioned between the oxidation electrode and the reduction electrode A fuel cell unit 110 for generating hydrogen gas or oxygen gas in an electrolysis mode and generating an electromotive force in a fuel cell mode, and a fuel cell unit 110 for dissolving the hydrogen gas or hydrogen gas in water to generate hydrogen or oxygen water An ultrasonic wave generator 130 for ultrasonic vibration of water to generate a mist and a gas catcher 140 for collecting hydrogen gas or oxygen gas not dissolved in the functional water catcher 120 And a control unit 150 for controlling the fuel cell unit 110 and the ultrasonic unit 130. The control unit 150 controls the operation of the fuel cell unit 110 in the fuel cell mode The number by using the electromotive force stored in the function carrying water bottom 120 may have technical features to measure dissolved hydrogen concentration of the minority.

The fuel cell unit 110 is composed of a reversible polymer electrolyte membrane fuel cell and combines the functions of the electrolysis and the fuel cell in one device. When the direct current is applied, the fuel cell unit 110 operates in an electrolysis mode in which hydrogen and oxygen are generated from water When the hydrogen gas is injected, it operates in a fuel cell mode in which electricity is generated from hydrogen.

Generally, a polymer electrolyte membrane fuel cell is composed of a membrane electrode assembly (MEA) that uses an oxidizing electrode / reducing electrode, an electrolyte membrane, a catalyst layer, and a gas diffusion layer as an integrated unit. A porous carbon electrode containing a Pt catalyst is used as the reducing electrode, and a fluorine resin ion exchange membrane is used as the polymer electrolyte membrane.

However, in the present invention, for the purpose of producing functional water, the gas diffusion layer, which is a component of the electrode membrane assembly, is removed to constitute the electrode membrane assembly with the oxidizing electrode / reducing electrode, the electrolyte membrane and the catalyst layer, The fuel cell function was minimized to limit the measurement of dissolved hydrogen concentration.

In addition, although the electrolyte membrane in a general reversible polymer electrolyte membrane fuel cell has a directionality, there is a problem that the electrolyte membrane is damaged if the polarity of the electrolyte is changed. However, since the electrolyte membrane used in the present invention is formed by coating a platinum catalyst on both sides of the membrane, If you change the + and - poles, you can get the desired number of functions (water or oxygen) selectively.

That is, in the electrolysis mode of the fuel cell unit 110, the positive electrode and the negative electrode are alternately given to the two electrodes to selectively generate hydrogen or oxygen as a desired function number And in the fuel cell mode of the fuel cell unit 110, only a predetermined electromotive force for measuring the dissolved hydrogen concentration is generated.

According to one embodiment of the present invention, the concentration values of dissolved oxygen and dissolved hydrogen by operating time, which are obtained by changing the (+) and (-) poles of two electrodes in the electrolysis mode, are as shown in Table 1 Input voltage 4V DC, input current 0.8A), and the contents of the following Table 1 are shown in FIG. 3 as a graph.

TEST 0 TEST 1 TEST 2 TEST 3 TEST 4 TEST 5 TEST 6 TEST 7 TEST 8 TEST 9 TEST 10 Operating time (min) 0 One 2 3 4 5 6 7 8 9 10 Oxygen water concentration (ppm) 2.90 4.00 4.90 5.90 6.70 7.30 7.90 8.00 8.01 8.10 8.12 Hydrophilic concentration (ppm) 0.00 0.56 0.92 0.95 0.96 0.97 0.99 1.02 1.03 1.10 1.12

The hydrogen gas produced in the electrolysis mode is dissolved in the water, and when the electrolysis is completed, the reversible polymer electrolyte membrane is converted into a fuel cell state, and electricity is generated using hydrogen molecules in water. In this case, the magnitude of the electromotive force varies depending on the concentration of dissolved hydrogen in the water. Using this principle, the electromotive force (or voltage) of the functional water is measured and converted into the dissolved hydrogen concentration, do.

Conventionally, the dissolved hydrogen concentration is measured by a polarography sensor and a redox potential difference sensor. Since the sensor structure is complicated and expensive, it is difficult to apply it to a functional water producing apparatus, Since the present invention utilizes the fuel cell mode of the reversible polymer electrolyte membrane fuel cell, it is not necessary to additionally provide an expensive hydrogen concentration measuring sensor and the concentration of dissolved hydrogen can be easily calculated and calculated A value may be displayed through a separate display unit.

According to an embodiment of the present invention, the correlation between the dissolved hydrogen concentration and the voltage value measured in the fuel cell mode is as shown in Table 2 and FIG.

TEST 1 TEST 2 TEST 3 TEST 4 TEST 5 TEST 6 TEST 7 TEST 8 TEST 9 Hydrogen concentration (ppb) 1000 895 793 665 602 545 410 275 0 Voltage (V) 0.959 0.910 0.896 0.847 0.510 0.224 0.098 0.035 0.000

Therefore, by measuring the electromotive force at the moment when the electrolysis of water is finished for a predetermined time or when the dissolved hydrogen concentration is to be known, the value converted to the concentration of hydrogen in the graph reflecting the above table is displayed as a numerical value or other indication (LED color or number Etc.).

Meanwhile, in the present invention, by executing the fuel cell mode and checking the real-time voltage, it is possible to automatically program the electrolysis mode at a voltage equal to or lower than a predetermined hydrogen concentration to maintain the concentration of hydrogenated water in a predetermined range (1,000 ppb or more) Function can also be given.

The functional water reservoir 120 may contain water therein and selectively supply oxygen gas or hydrogen gas generated in the fuel cell unit 110 provided at the upper side of the fuel cell unit 110 to water To generate and store the function number.

The ultrasonic wave unit 130 ultrasonically vibrates the water to generate a mist. The cap unit 160 opens and closes the upper side of the air catcher 140. When the cap unit 160 is opened, (See FIG. 2 (a)), or when the cap portion 160 is closed, the hydrogen trapped in the gas capture container 140 The hydrogen gas is dissolved in the fine water molecules by contacting with the gas so that the dissolved hydrogen concentration of the functional water of the functional water tank 120 provided at the lower side is increased so that the functional water of higher concentration can be obtained at the same time (See Fig. 2 (b)).

At this time, the surface area of the droplet particles generated is a contact surface with the generated hydrogen molecules, and the surface area of water droplets generated in the ultrasonic mode is calculated as follows.

Water droplet discharge capacity per hour by ultrasonic device: 50cc (= 50cm3) - (1)

Water droplet discharging ability per second: 50 cm 3 / (60 × 60) = 1.38 × 10 ^-2 cm 3 / sec - (2)

Diameter of water drop: 5Micron = 5 × 10 ^-4 ㎝ (for general purpose product) - (3)

Of water droplets per unit volume ^{(4 / 3πr 3): 4} /3 × 3.14 × (5 × 10 - 4) 3 = 1.67 × 10 -10 ㎤ / nH 2 O - (4)

The number of water droplets generated per second (nH ₂ O): 1.38 × 10 ^-2 /1.67 × 10 ^-10 = 3.33 × 10 ⁸ nH ₂ O / sec - (5)

The total surface area of the water droplets generated per second ^{(4πr 2): (4 ×} 3.14 × (5 × 10 - 4) 2 × 3.33 × 10 ⁸ = 1.05 × 10 ³ cm 2 / sec - (6)

(? R ² ) of the water interface of the present invention: 3.14 x 3 ² = 28 cm 2 - (7)

Therefore, it is obvious that the surface area of (6) is about 37.5 times larger than the surface area of (7) by the ultrasonic spray, so that the dissolution rate is greatly improved because of the contact with the hydrogen molecule. In the production of hydrogenated water, The effect to raise is excellent.

According to one embodiment of the present invention, the dissolved hydrogen concentration value depending on the presence or absence of the operation of the ultrasonic mode is as shown in Table 3 and FIG.

TEST 0 TEST 1 TEST 2 TEST 3 TEST 4 Operating Time (SEC) 0 30 60 90 120 Ultrasonic Mode OFF 0 170 416 728 942 Ultrasonic Mode ON 0 210 458 776 1,008

The control unit 150 controls the fuel cell unit 110 and the ultrasonic unit 130 and controls the function selection mode, the electrolysis mode, the fuel cell mode (dissolved hydrogen concentration display mode) And a circuit module for driving the ultrasonic wave mode. That is, a function selection mode in which the gas generated in the fuel cell unit 110 is selectively generated according to a user's request to generate a functional water as hydrogen water or oxygen water, A fuel cell mode in which the fuel cell unit 110 is driven for measurement of the dissolved hydrogen concentration, and a fuel cell mode in which mist is generated by using ultrasonic waves to be used for humidification And a circuit module (not shown) for executing an ultrasonic mode to be used for increasing the dissolved hydrogen concentration.

The power supply unit 170 may be a battery type, and may include a power supply unit 170 and a power supply unit 170. The power supply unit 170 may include a power supply unit 170 for supplying power to the fuel cell unit 110, the ultrasonic unit 130, In the decomposition mode, an input voltage of 2.1 to 4 V DC and an input current of 0.8 A are applied to the fuel cell unit 110 to form a hydrogen gas production rate of 5 mL / min and an oxygen gas production rate of 2.5 mL / min .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

110: fuel cell unit 120: functional water reservoir
130: ultrasonic section 140:
150: control unit 160:
170:

Claims (7)

In the functional water producing apparatus,
A fuel cell unit 110 including an oxidizing electrode, a reducing electrode, and a polymer electrolyte membrane disposed between the oxidizing electrode and the reducing electrode, the fuel cell unit 110 generating hydrogen gas or oxygen gas in an electrolysis mode and generating an electromotive force in a fuel cell mode;
A functional water reservoir 120 for dissolving the hydrogen gas or the oxygen gas in water to generate and store hydrogen or oxygen water;
An ultrasonic wave unit 130 for ultrasonic vibration of water to generate a mist;
A gas capture container (140) for capturing the hydrogen gas or the oxygen gas that is not dissolved in the functional water reservoir (120); And
And a control unit (150) for controlling the fuel cell unit (110) and the ultrasonic unit,
The polymer electrolyte membrane of the fuel cell unit 110 is made of a fluorocarbon resin ion exchange membrane, platinum catalyst coating is applied to both sides of the electrolyte membrane,
And a cap unit 160 for opening and closing an upper side of the air catcher 140. When the cap unit 160 is opened, the mist generated by the ultrasonic unit 130 is sprayed to the outside to humidify the air, When the cap portion 160 is closed, the hydrogen gas in the gas capture container 140 is dissolved by the mist to increase the dissolved hydrogen concentration in the functional water jacket 120,
The dissolved hydrogen concentration of the hydrogen water according to the measured electromotive force is measured by measuring the electromotive force at the end of the electrolysis mode or when the dissolved hydrogen concentration is known according to the relationship of the magnitude of the electromotive force depending on the dissolved hydrogen concentration. Wherein the fuel cell comprises a reversible polymer electrolyte membrane fuel cell.
delete The method according to claim 1,
(+) Pole and (-) pole are alternately given to the two electrodes in the electrolysis mode of the fuel cell unit 110 so that the user can selectively generate hydrogen or oxygen as the desired function number Functional water producing apparatus using a reversible polymer electrolyte membrane fuel cell.
The method according to claim 1,
Wherein the fuel cell unit generates the predetermined electromotive force for measuring the dissolved hydrogen concentration in the fuel cell mode of the fuel cell unit (110).
delete The method according to claim 1,
The control unit 150 may include a function selection mode for selectively generating gas generated in the fuel cell unit 110 according to a user's request to generate hydrogen or oxygen water, An electrolysis mode that allows the gas to be generated to produce a selected number of functions, a fuel cell mode that allows the measurement of electromotive force to measure and display the dissolved hydrogen concentration, and the generation of mist via ultrasonic waves, And a circuit module for performing an ultrasonic mode to be used for increasing the concentration of the polymer electrolyte fuel cell.
The method according to claim 1,
And the electrolytic mode is automatically performed at an electromotive force lower than a predetermined dissolved hydrogen concentration by checking the real-time voltage by executing the fuel cell mode, whereby the dissolved hydrogen concentration is maintained at a predetermined range or more. Functional water producing device using an electrolyte membrane fuel cell.

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