CN102001730B - Device for producing weakly alkaline negative potential electrolyzed water and electrolysis water dispenser - Google Patents

Abstract

The invention relates to a weakly alkaline negative potential electrolyzed water preparation device and an electrolyzed water dispenser, belonging to the technical field of electrolyzed water devices. The weakly alkaline negative potential electrolyzed water preparation device comprises an electrolytic cell without a diaphragm, negative and positive electrodes placed in the electrolytic cell, and a DC pulse power supply electrically connected to the positive and negative electrodes. The surface area of the negative electrode is greater than that of the positive electrode. In addition to the weakly alkaline negative potential electrolyzed water preparation device, the electrolytic water dispenser also includes a water inlet, a water outlet, and a heating device connected in series to the water outlet; Placed in the very center inside the metal barrel. The weakly alkaline negative potential electrolyzed water production device and the electrolyzed water dispenser not only have a simple structure, but also can quickly and effectively produce weakly alkaline negative oxidation-reduction potential electrolyzed water suitable for human consumption.

Description

Weak alkaline negative potential electrolyzed water preparation device and electrolyzed water dispenser

technical field

The invention relates to a device for preparing electrolyzed functional water, belonging to the technical field of electrolyzed water devices.

Background technique

Functional water is a type of water that applies external energy, such as mechanical energy, magnetic energy, electric energy, and far-infrared heat energy, to ordinary water under specific conditions by appropriate means, changing the molecular structure of water to make it have beneficial functions. collectively. At present, it is generally recognized and the only standard that can be implemented is electrolyzed functional water, commonly known as electrolyzed water or ionized water. Electrolyzed water refers to the electrolyzed oxidized water and electrolyzed reduced water produced at the anode and cathode after direct current is applied to the electrolytic cell; electrolyzed oxidized water contains more acid radical ions (H ⁺ ions), which is oxidizing, also known as acidic Water, electrolyzed reduced water contains more hydroxide ions (OH ^- ), has reducing properties, and is also called alkaline water. A large number of studies at home and abroad and decades of application have proved that drinking electrolyzed reduced water (weak or medium alkaline) is beneficial to health, especially the weakly alkaline electrolyzed reduced water with negative redox potential is called "longevity water" . There are a large number of reports on electrolyzed water in the existing knowledge for reference.

The existing water electrolysis machines that are common in the market generally adopt the electrolyzer structure with a diaphragm, which is not only complicated in structure, but also the membrane is easily polluted. There are many existing technologies in this respect, and the present invention does not need to be introduced.

The applicant has previously applied for an electrolyzed water device using a diaphragm-free electrolyzer structure, such as a published Chinese patent ZL200820183101. Portable electrolytic functional water generator. These electrolyzed water devices with the disclosed diaphragmless electrolyzer structure use the microcurrent generated by the DC pulse power supply to electrolyze water, creating a new method and device for preparing electrolyzed water by the diaphragmless electrolyzer. Although these disclosed electrolyzed water devices can realize electrolyzed water without a diaphragm, firstly, due to the limitation of the micro-current range, high requirements are placed on the DC pulse power supply, the control circuit is too complicated, and the cost is high; Long time, it is impossible to quickly and effectively produce electrolyzed water with weak alkaline negative redox potential suitable for human consumption.

Contents of the invention

The technical problem to be solved by the present invention is to propose a membrane-free electrolyzed water device capable of quickly and effectively producing weakly alkaline electrolyzed water with negative redox potential suitable for human consumption, which has a simple structure.

In order to solve the above technical problems, the technical solution proposed by the present invention is: a weakly alkaline negative potential electrolyzed water production device, including an electrolytic cell without a diaphragm, a negative electrode and a positive electrode placed in the electrolytic cell, and an The electrodes are electrically connected to a DC pulse power supply, and the surface area of the cathode electrode is greater than that of the anode electrode.

The beneficial effects of the weakly alkaline negative potential electrolyzed water preparation device of the present invention can be confirmed by the experimental data of the examples later in this paper, and can be illustrated by the following theoretical analysis obtained after in-depth research by the inventor:

1. The formation of weak alkalinity

After the water is energized, an electrolysis reaction occurs. The reaction formula is: H ₂ O ＝ H ⁺ + OH ^{- .} Attached to the positive and negative poles. Since the hydrogen bond is easier to open than the hydrogen-oxygen bond to form hydrogen, when the cathode area is larger than the anode, it is more conducive to the occurrence of hydrogen evolution reaction, and the smaller area of the anode relative to the cathode will lead to insufficient electrolysis reaction of the anode; The generation of hydroxide ions is greater than the generation of hydrogen ions, so that the electrolyzed water shows weak alkalinity as a whole. Even for water containing electrolytes (such as tap water or pure water containing minerals), during electrolysis, anions in the water such as (Cl ^- ) move to the anode for oxidation reactions, while cations (Ca ²⁺ , Mg ²⁺ , Na ⁺ ) moves to the cathode for reduction reaction. Since the area of the cathode is larger than that of the anode, the side reactions generated by the anions at the anode are more likely to affect the degree of oxidation reaction of the hydroxide radicals, while the side reactions generated by the cations at the cathode have relatively little effect on the hydrogen radicals. Therefore, weakly alkaline water can also be obtained.

2. The formation of negative redox potential:

The transfer of energy during electrolysis is actually the transfer of electrons. For example, a high-voltage negative ion generator uses the principle of energy electron transfer to use a single electrode to emit negative ions into the air. During water electrolysis, electrical energy is mainly converted into heat energy that raises the temperature of water and chemical energy that makes water electrochemically react. When pulse current is used for electrolysis, the electrode voltage also changes in a wave shape, increasing the instantaneous voltage per unit time, which can increase the production of chemical energy and reduce the consumption of heat energy. High chemical energy will cause electrons in water to gather. At this time, hydrogen atoms in water can easily capture electrons under high voltage and high energy conditions to form a relatively stable hydride ion state. With the continuous accumulation of hydrogen negative ions in water, the oxidation-reduction potential of water continues to decrease, and finally becomes stable negative potential water.

In addition, when water is electrolyzed, the hydrogen attached to the cathode will first form hydrogen in the original state during the process of forming molecules, that is, active hydrogen (H ^- ) with electrons. For water containing electrolytes, many nanoscale metal particles will float around the cathode due to electrolysis. These suspended metal particles have the ability to adsorb active hydrogen, and the active hydrogen will attach to the metal particles to form a relatively stable storage state. Active hydrogen and these metal particles are only attached to each other and have no reaction connection. Therefore, it still maintains its original state (ie H ^- ). When the area of the cathode is larger than that of the anode, the reduced hydrogen attached to the cathode can more fully contact with the metal particles and undergo an adsorption reaction, so that there are more stable states of active hydrogen in the water. When active hydrogen (H ^- ) encounters hydrogen ions (H ⁺ ) while moving in water, part of the active hydrogen will react with hydrogen ions to reduce the number of hydrogen ions (H ⁺ ) in water.

Based on the above theoretical analysis, it can be concluded that the weak alkaline negative potential electrolyzed water preparation device of the present invention, as a non-diaphragm electrolyzed water device, not only has a simple structure, but also can quickly and effectively produce Weakly alkaline negative redox potential electrolyzed water suitable for human consumption.

It is worth mentioning that the above theoretical analysis cannot obtain any relevant enlightenment from the existing theory; on the contrary, the existing general understanding is that for electrolytic water devices without a diaphragm, the sizes of the cathode and anode electrodes are different. It is impossible to produce useful weak alkaline negative redox potential electrolyzed water at all. In the absence of sufficient theoretical guidance in the field of electrolyzed water prior to the present invention, in order to break through the bottleneck that existing electrolyzed water devices without diaphragms cannot produce weakly alkaline electrolyzed water with negative redox potential simply, quickly and effectively, the inventors After long-term repeated experiments, I finally found out that the different sizes of the yin and yang electrodes are different in size, which seems easy afterwards, but it is difficult to imagine beforehand and the understanding and inspiration that can only be obtained through arduous experimental processes. This is enough to prove that the device for preparing weakly alkaline negative potential electrolyzed water of the present invention is not obvious.

The improvement of the above technical solution is: the orthographic projection of the anode electrode in a plane perpendicular to the line connecting the geometric centers of the cathode and anode electrodes is within the range of the orthographic projection of the cathode electrode in the plane.

After finding the key technology that the above-mentioned negative and positive electrodes have different sizes, the inventor found in further experiments that for the electrolytic water device without a diaphragm, when the positive electrode and the negative electrode are in the same line as the geometric center In the case where the orthographic projections in the vertical plane surround and coincide with each other (that is, when the orthographic projection of the anode electrode in the plane is within the range of the orthographic projection of the cathode electrode in the plane), the weak base for electrolyzed water is produced Sex and negative oxidation-reduction potential indicators are more ideal. What needs to be emphasized here is that the effective reaction area of the electrode is different from the geometric area of the electrode. This is because the electrolysis reaction will be different due to the relative position of the cathode and anode. As shown in Figure 1, when the cathode and anode electrodes with different sizes are only placed in parallel and staggered, the electrolytic reaction mainly occurs between the parts where the two electrodes overlap each other in a plane perpendicular to the line connecting their geometric centers ( The current only flows along the path with the least impedance), so the effective reaction area of the cathode and anode electrodes still tends to be 1:1.

A further improvement of the above technical solution is: the ratio of the surface area of the anode electrode to the cathode electrode is 1:1.5-1:8; the distance between the anode electrode and the cathode electrode ranges from 4 mm to 1000 mm.

The inventor has concluded from numerous experiments: for an electrolyzed water device without a diaphragm, when the ratio of the surface area of the positive electrode to the negative electrode and the distance between the positive electrode and the negative electrode meet the above-mentioned condition ranges at the same time, it can be produced to meet the weak Electrolyzed water with alkaline and negative redox potential indicators. It needs to be emphasized that: as shown in Figure 2, when the distance between the cathode and anode electrodes with different surface areas exceeds the range of the above conditions, the edges of the two plates have an inclination angle, and the effective reaction area of the cathode and anode electrodes will still appear. It is not the same as the geometric area ratio; for source water with high conductivity (such as tap water in northern cities), it is particularly important to maintain a suitable ratio of the surface area of the positive and negative electrodes and the distance between the positive and negative electrodes.

One of the perfections of the above-mentioned technical solution is: the projected areas of the cathode and anode electrodes in a plane perpendicular to the line connecting their geometric centers are basically the same, and the anode electrodes are formed with uniform and dense through holes.

The second improvement of the above technical solution is: the cathode and anode electrodes are placed obliquely in the electrolytic cell and form an included angle with the inner wall of the electrolytic cell.

The third improvement of the above technical solution is: the positive electrode is a sphere, and the negative electrode is a flat plate.

The fourth improvement of the above technical solution is: the positive electrode is an irregular approximate sphere, and the negative electrode is an irregular curved plate.

The fifth improvement of the above technical solution is: the anode electrode is an irregular flat plate with through holes, and the cathode electrode is a flat plate with four sides chamfered larger than the anode electrode.

The sixth improvement of the above technical solution is: the positive electrode is a cylinder located in the center of the electrolytic cell; the electrolytic cell is made of conductive material, and its inner wall is used as the negative electrode.

Another technical solution derived from the above technical solution in the present invention is: an electrolytic water dispenser, including a weak alkaline negative potential electrolytic water production device, and also includes a water inlet, a water outlet, and a water outlet connected in series. The heating device; the electrolytic tank is a metal barrel, the inner wall of which is used as the cathode electrode; the anode electrode is placed in the center of the metal barrel.

Description of drawings

The weak alkaline negative potential electrolyzed water production device and the electrolyzed water dispenser of the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram illustrating the placement of the first cathode and anode electrodes of the weakly alkaline negative potential electrolyzed water preparation device different from the present invention.

Fig. 2 is a structural schematic diagram illustrating the placement of the second cathode and anode electrodes different from the weak alkaline negative potential electrolyzed water production device of the present invention.

Fig. 3 is a schematic structural view of a device for producing weakly alkaline negative potential electrolyzed water according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along line A-A of Fig. 3 .

Fig. 5 is a schematic structural diagram of a device for preparing weakly alkaline negative potential electrolyzed water according to Embodiment 2 of the present invention.

Fig. 6 is a cross-sectional view taken along line B-B in Fig. 5 .

Fig. 7 is a schematic cross-sectional structure diagram of a device for producing weakly alkaline negative potential electrolyzed water according to Example 3 of the present invention.

Fig. 8 is a schematic structural view of a device for producing weakly alkaline negative potential electrolyzed water according to Embodiment 4 of the present invention.

Fig. 9 is a schematic structural view of a device for producing weakly alkaline negative potential electrolyzed water according to Example 5 of the present invention.

Fig. 10 is a schematic structural view of a device for producing weakly alkaline negative potential electrolyzed water according to Example 6 of the present invention.

Fig. 11 is a schematic cross-sectional structure diagram of a weak alkaline negative potential electrolyzed water preparation device according to Embodiment 7 of the present invention.

Fig. 12 is a schematic structural view of an eighth weakly alkaline negative potential electrolyzed water production device according to Embodiment 8 of the present invention.

Fig. 13 is a schematic structural view of an electrolytic water dispenser according to Embodiment 9 of the present invention.

Detailed ways

Embodiment one

The weakly alkaline negative potential electrolyzed water preparation device of this embodiment, as shown in Figure 3 and Figure 4, comprises an electrolytic cell 1 without a diaphragm, negative and positive electrodes 2, 3 placed in the electrolytic cell 1, and connecting negative and negative electrodes. DC pulse power supply 4 for positive electrodes 2 and 3. The electrolytic cell 1 is made of non-conductive material, and the cathode and anode electrodes 2 and 3 are flat plates and are inert electrodes made of inert materials such as platinum, iridium or ruthenium plated on the surface of the titanium base. The cathode and anode electrodes 2 and 3 It is placed in the electrolytic tank 1 parallel to the side wall of the electrolytic tank 1 . The surface area of the negative electrode 2 is greater than the surface area of the positive electrode 3, wherein the ratio of the surface areas of the positive electrode 3 and the negative electrode 2 is 1:1.5, and the positive electrode 3 is perpendicular to the line connecting the geometric centers of the negative and positive electrodes 2 and 3 The orthographic projection in the plane of is located within the range of the orthographic projection of the cathode electrode 2 in the plane. At this time, according to experimental calculation, the ideal range of the distance between the anode electrode 3 and the cathode electrode 2 is 80mm-300mm. The DC pulse power supply 4 is a frequency-sweeping pulse generator whose waveform, amplitude, duty ratio and power of the output DC pulse voltage can be adjusted.

Embodiment two

The weakly alkaline negative potential electrolyzed water preparation device of this embodiment is an improvement on the basis of Embodiment 1, as shown in Figure 5 and Figure 6, except that it is the same as Embodiment 1, the difference is: the negative and positive electrodes 2 , 3 have substantially the same projected area in a plane perpendicular to its geometric center line, but the anode electrode 3 is formed with evenly densely distributed through holes 5, and the ratio of the surface area of the anode electrode 3 to the cathode electrode 2 is 1: 5 (this implementation For example, the surface area of the positive electrode refers to the remaining surface area after the through hole 5 is removed). At this time, according to experimental calculation, the ideal range of the distance between the anode electrode 3 and the cathode electrode 2 is 10mm-450mm.

Embodiment Three

This embodiment is an improvement on the basis of Embodiment 2, as shown in Figure 7, except that it is the same as Embodiment 2, the difference is that the through holes 5 on the anode 3 are larger and denser, so that the anode and cathode The ratio of the surface areas of the electrodes is 1:8 (the surface area of the anode electrode in this embodiment refers to the remaining surface area after the through hole 5 is removed). At this time, according to the experimental calculation, the ideal range of the distance between the anode electrode 3 and the cathode electrode 2 is 4mm-600mm.

The weak alkaline negative potential electrolyzed water production device in the above three embodiments and the non-diaphragm electrolyzed water device with the same surface area of the cathode and anode electrodes were respectively subjected to the electrolyzed water preparation experiment. The main experimental conditions are:

1) Choose three kinds of water sources: Wahaha bottled purified water, bottled Nongfu Spring mineral water and Nanjing tap water;

2) The electrolytic cell 1 without diaphragm in the three embodiments is a square plastic container of 180mm×130mm×130mm, about 3 liters, the actual water injection volume=2200ml, and the cathode and anode electrodes 2 and 3 are respectively placed on both sides of the electrolytic cell 1 Near the inner wall, the surface area of the anode electrode 3 is ≈150cm ² , and the distance between the cathode and anode electrodes 2 and 3 is kept ≈180mm;

3) The DC pulse power supply adopts a DC pulse power supply with variable pulse width, the output peak voltage range is 0-220V, and the output peak DC current range is 0-500 mA, of which: A. When the experimental source water is pure water, the maximum output peak value is maintained The voltage is 220V, and the water production cycle is 30 minutes. During the period, the average electrolysis current varies from I=3ma-60ma (due to the low conductivity of pure water, the current has a fluctuation range from the beginning to the stability); B. The source water for the experiment is commercially available When Nongfu mountain spring mineral water, the water production cycle is 15 minutes, keep the electrolysis average current I=80ma;

4) In order to make the experimental results accurate, pour out all the water in the electrolytic cell 1 to the external container after each water production cycle is completed, stir fully and let it stand for 2 minutes before measuring the PH and ORP values (abbreviation for Oxidation-Reduction Potential, which means The oxidation-reduction potential of the solution) was compared with litmus reagent to detect the pH value.

The experimental results are as follows in Table 1-Table 3:

Table 1

Table 2

table 3

It can be seen from Table 1-Table 3:

(1) As the ratio of the surface area of the anode to the cathode increases, the PH value and negative redox potential (ORP) value of the electrolyzed water also increases, which is the case for different source water qualities (such as different conductivity);

(2) For tap water, the ions contained in the water are very complicated, and various side reactions may occur, and alkaline substances are hydrolyzed. Therefore, when the surface area of the anode and the cathode are equal, there may also be a certain weak alkalinity and ORP value, but far from The effect is not as obvious when the specific surface area of the anode and the cathode is not equal.

Embodiment Four

This embodiment is a variation on the basis of Embodiment 1. As shown in Figure 8, its structure is basically the same as that of Embodiment 1. The difference is that the cathode and anode electrodes 2 and 3 are placed obliquely in the electrolytic cell 1. , the two electrode plates form an included angle with the inner wall of the electrolytic cell 1 .

Embodiment five

This embodiment is another variation on the basis of the first embodiment. As shown in FIG. 9 , its structure is basically the same as that of the first embodiment, except that the positive electrode 3 is a sphere, and the negative electrode 2 is flat.

Embodiment six

This embodiment is another change on the basis of the first embodiment, as shown in Figure 10, its structure is basically the same as that of the first embodiment, the difference is that the positive electrode 3 is irregular and approximately spherical, and the negative electrode 2 Is an irregular curved plate.

Embodiment seven

This embodiment is a change based on the third embodiment. As shown in Figure 11, its structure is basically the same as that of the third embodiment. The cathode electrode 2 is in the shape of a flat plate with chamfered sides slightly larger than the anode electrode 3 .

Embodiment eight

This embodiment is a change on the basis of the above-mentioned embodiments, as shown in Figure 12, except that its structure is the same as that of the above-mentioned embodiments, the difference is that the positive electrode 3 is a cylinder located at the center of the electrolytic cell 1 body, the electrolytic tank 1 is made of conductive material, and the inner wall of the electrolytic tank 1 is used as the negative electrode 2.

The inventors of the present invention carried out experiments on the five kinds of weakly alkaline negative potential electrolyzed water preparation devices in the above-mentioned embodiment 4 to embodiment 8 respectively according to the experimental methods of the foregoing embodiments 1 to 3, and the results obtained from the experiments were the same as those of the foregoing embodiments 1 to 1. The experimental results of Example 3 are similar with minor differences, and will not be repeated here.

Embodiment nine

This embodiment is an electrolytic water dispenser improved on the basis of the eighth embodiment above. As shown in Figure 13, the electrolytic water dispenser includes the weak alkaline negative potential electrolyzed water preparation device of the above embodiment, 1 ) also includes a water inlet 6, a water outlet 7 and a heating device 8 connected in series on the water outlet 7; 2) the electrolytic cell 1 without a diaphragm is a stainless steel metal barrel, and its inner wall is used as the cathode 2; 3) the anode 3 is made of A cylindrical ring-shaped inert electrode made of inert materials such as platinum, iridium or ruthenium plated on the surface of the titanium base. The positive electrode 3 is installed in the center of the stainless steel metal barrel; 4) The ratio of the surface area of the positive electrode 3 to the negative electrode 2 is 1: 6 (the surface area of the positive electrode in this embodiment includes the entire surface area exposed to water, and the surface area of the negative electrode 2 is the area of the inner wall of the stainless steel metal barrel), at this time, according to experimental calculations, the ideal distance between the positive electrode 3 and the negative electrode 2 The range is 30mm-1000mm.

Due to the good mechanical strength and outer surface decoration of the stainless steel metal bucket, the shell of the water dispenser can be omitted to reduce product costs; the stainless steel metal bucket itself is a large-capacity water storage bucket, which can save the external water storage tank of the water dispenser ; Especially, for the production of weakly alkaline negative potential small molecular group drinking water, the inner wall of the stainless steel metal barrel doubles as the cathode electrode, which can avoid the problem of excessive heavy metal precipitation that is difficult to solve in conventional water dispensers (hot tanks).

The electrolysis water dispenser of this embodiment can use commercially available bottled water (pure water or mineral water), and can also use city-supplied tap water as the source water. The heating device of the electrolytic water dispenser provides normal temperature water or instant hot water or boiled water according to user needs.

The electrolysis water dispenser of the present embodiment adopts the typical experimental data of above-mentioned three kinds of source waters respectively and is shown in Table 5:

table 5

It can be seen from Table 5 that the electrolyzed water dispenser of this embodiment can produce electrolyzed water suitable for human consumption whose alkalinity value and redox potential value fully meet the standards. Note: The industry standard for electrolytic water generators (CAS 124-2007) issued on April 30, 2007 limited the pH value of alkaline electrolyzed water to 7.0~9.5, ORP<0mV, and the Chinese national standard (GB 5749-2006) stipulated the pH value Not less than 6.5 and not more than 8.5.

During the activation of the diaphragmless electrolytic cell 1 of the electrolytic water dispenser in this embodiment, the calcium and magnesium ions in the source water continuously move to the cathode and adhere to the inner wall of the stainless steel metal bucket as the electrolytic cell 1, so that the hardness of the water is reduced. After completing several water production cycles, the polarity of the cathode and anode can be reversed, so that the voltage applied to the inner wall of the stainless steel metal barrel as the cathode electrode 2 is positive, while the voltage on the anode electrode 3 is negative, so that the attached The scum on the inner wall of the stainless steel metal bucket is peeled off and discharged through the sewage outlet 9.

The weakly alkaline negative potential electrolyzed water preparation device and the electrolyzed water dispenser of the present invention are not limited to the specific technical solutions described in the above embodiments, such as: the negative and positive electrodes 2 and 3 are not necessarily made of titanium-based surfaces plated with platinum or iridium. Or an inert electrode made of inert materials such as ruthenium, or a non-inert electrode made of other metal materials plated on the surface of common metal materials (such as copper, aluminum, stainless steel, etc.), but from the perspective of drinking water safety, the anode electrode 3 is the best Preferably, the above-mentioned inert electrodes are used; and so on. All technical solutions formed by equivalent replacement are within the scope of protection required by the present invention.

Claims (2)

1. weakly alkaline negative potential brine electrolysis device for making, comprise aseptate electrolyzer, be placed in the yin, yang electrode in described electrolyzer, and the direct current pulse power source that is electrically connected to anodic-cathodic, it is characterized in that: the surface-area of described negative electrode is greater than the surface-area of positive electrode; Described positive electrode with the geometric centre line of described yin, yang electrode perpendicular plane in orthographicprojection be positioned at described negative electrode within the scope of the orthographicprojection on described plane; Described positive electrode is 1:1.5～1:8 with the ratio of the surface-area of negative electrode; The scope of the spacing of described positive electrode and negative electrode is 4mm-1000mm.

2. weakly alkaline negative potential brine electrolysis device for making according to claim 1, it is characterized in that: described yin, yang electrode incline is placed in described electrolyzer and with described electrolyzer inner side-wall and forms an angle.

3. weakly alkaline negative potential brine electrolysis device for making according to claim 1, it is characterized in that: described positive electrode is spheroid, described negative electrode is dull and stereotyped.

4. weakly alkaline negative potential brine electrolysis device for making according to claim 1, it is characterized in that: described positive electrode is the right cylinder that is positioned at described electrolyzer centre; Described electrolyzer adopts electro-conductive material to make, and its inwall is as negative electrode.

5. electrolysis water dispenser is characterized in that: comprise the described weakly alkaline negative potential of claim 1 brine electrolysis device for making, also comprise water-in, water outlet and be serially connected with the heating unit of water outlet; Described electrolyzer is metal drum, and its inwall is as negative electrode; Described positive electrode is placed in the inner centre of described metal drum.

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