JP2001347270A - Electrolytic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized electrolytic apparatus having long-time durability even when current supply quantity per an electrode area is raised and high electrolytic efficiency. SOLUTION: A cylindrical anode and a cylindrical cathode are alternately arranged in a concentric state such that they are put one over another so as to provide an interpole distance between them. Then anode comprises a ferrite round rod having a long hole in the center axis direction thereof or a ferrite pipe and a low melting point metal heated to a degree showing fluidity or mercury being a liquid at the normal temperature is preliminarily put in the hole of the round rod or pipe and a conductive metal terminal main body is inserted in the hole of the rod or pipe not only to sufficiently take the contact area of the terminal and the ferrite electrode but also to enhance the conductivity of the contact part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a medical device, tableware,
TECHNICAL FIELD The present invention relates to an electrolysis method capable of electrolyzing an aqueous solution containing a halogen ion to produce sterilized cleaning water for sterilizing and cleaning foods, fingers, and the like, and an electrolysis apparatus thereof.

[0002]

2. Description of the Related Art In a conventional method, a platinum-plated titanium electrode plate has been used for an electrode for producing electrolytic water having a sterilizing / cleaning power, particularly for an anode having a strongly acidic and strongly oxidizing environment.
However, there is a problem that it cannot withstand long-term use, and the nickel ferrite electrode (Japanese Patent Application No. 51-83246) developed by Tokyo Denki Kagaku Kogyo Co., Ltd. has been used instead because of its good corrosion resistance. When the current value is increased to increase the cleaning effect, the terminal portion generates heat, and the ferrite is damaged by thermal strain, and the plastic case of the electrolytic reactor is thermally expanded and deformed.

The inventor has filed the following patent application regarding the above ferrite electrode. (1) Japanese Patent Application No. 9-369487 "Electrolyzer" (2) Japanese Patent Application No. Hei 10-134509 "Electrolyzer" In these inventions, a conventional hand-washing sterilizing water apparatus is used. The long-term durability performance of 3 to 5 times of the case was obtained. However, when the current value is increased in order to further enhance the sterilizing and cleaning effect, there is a problem that the terminal portion generates heat. Further, in order to be easily installed even in a narrow place such as at home or in a hospital room, there is a need for a more compact and compact sterilizing washing water generator.

[0004]

SUMMARY OF THE INVENTION In order to solve these problems, the present invention provides a small-sized electrolysis apparatus having a long-term durability and a high electrolysis efficiency even when the amount of current per electrode area is increased. The purpose is.

[0005]

In order to solve the above-mentioned problems, according to the present invention, the plastic case is thermally expanded and deformed due to the overheating of the electrodes even if the electrolytic device is used for a long period of time, even if the electrolytic device is made compact and compact. In order to prevent this from happening, the whole was made cylindrical so as to improve the terminal connection of the nickel ferrite anode and to take a strong structure.

[0006] A plurality of anodes and cathodes are alternately arranged concentrically with a gap between the poles, arranged one above the other, and an aqueous solution containing a halogen ion between the poles is electrolyzed to produce sterilizing washing water. However, as the anode, a nickel ferrite electrode which is less expensive than platinum and has the highest corrosion resistance after platinum is used.

At the anode, a halogen ion is precipitated as chlorine or bromine, and immediately reacts with water to produce a strongly acidic acid such as hydrochloric acid. It is required that ferrite selected from actual results does not have high electrical conductivity unlike ordinary metal, and because it is ceramic, it is hard and brittle,
It is difficult to join the terminals by welding or the like by the conventional method, and in the present invention, the contact area between the terminal and the ferrite electrode is sufficiently provided to improve the conductivity of the contact portion.

In the present invention, the anode (1) at the center of the cylindrical structure is a ferrite round bar or a round tube having a long hole in the center axis direction, and a conductive metal bar slightly smaller than the hole diameter. An anode configured to be inserted as a terminal main body (5) and having a soft conductive low-melting-point metal bonding portion (6) sandwiched between the outer periphery of the metal rod terminal main body and the hole; It is preferable that a corrosion-resistant metal tube is concentrically disposed as a cathode (2) with a distance of 0.5 to 5.0 mm between the electrodes.

As the metal rod terminal body (5), a commonly used one such as copper, gunmetal, brass, iron, stainless steel, and titanium is used, and is drilled in the center axis direction of the round bar (1) of anode ferrite. A soft conductive low-melting metal bonding portion (6) is inserted in advance into the long hole (7), and the threaded conductive metal rod terminal body (5) is screwed into the outer periphery thereof. The ferrite and the long metal rod terminal come in contact over a wide area, and a low-melting soft conductive metal tube is inserted between them.Screw in the metal rod terminal body to fill the gap between the terminal and the ferrite. In addition, the electric conduction from the terminal to the ferrite becomes very good, and the voltage does not increase even if the current value is increased. That is, abnormal heat generation at the terminal portion can be suppressed.

When the conductive metal rod terminal body (5) is screwed, a soft conductive metal having a low melting point, for example, having a melting point of 80 to
By heating the low-melting alloy at 180 ° C. to such an extent that it has fluidity, or by using mercury which is liquid at room temperature, the electric conduction from the terminal to the ferrite is further improved.

[0011] An electrolytic apparatus is constructed by alternately disposing cylindrical anodes and cathodes in a concentric manner with an inter-electrode distance therebetween, and arranging them one on top of the other. A ferrite round bar or a round tube having a hole (7), a soft conductive low melting point metal tube having a thickness of 0.5 to 1 mm is previously inserted into the long hole, and is slightly smaller than the hole diameter. ,
Inserting a threaded conductive metal rod as a terminal body (5) around the outer periphery of the terminal body causes the metal rod terminal body to be screwed in, and a soft conductive metal is provided between the outer periphery of the terminal body and the hole. The long terminal contacts the ferrite in a large area inside the long rod-shaped anode, and the electrode can be sufficiently energized at a low voltage. A corrosion-resistant metal tube is arranged concentrically as a cathode at a distance of 0.5 to 5.0 mm outside the long anode, and an aqueous solution containing a halogen ion is fed between the electrodes to perform electrolysis. In addition, the electrolyzer for producing the sterilizing cleaning water can have a long service life and a small size.

When the conductive metal rod terminal body is inserted, a soft conductive metal having a low melting point is heated so as to have fluidity, or by using mercury which is liquid at room temperature, the terminal is turned into ferrite. Since the electric conduction is further improved and the voltage does not increase even if the current value is increased, abnormal heat generation at the terminal portion can be suppressed, so that an electrolyzer with simple processing and a long life can be manufactured.

[0013] When a ferrite pipe is used as a cylindrical anode, simply attaching a terminal to the end of a long pipe is insufficient in electric conduction, so that two ferrite pipes having outer diameters different by 1 to 5 mm are used. When a pipe of a conductive metal with a thickness of about 1 mm in the middle diameter is coaxially stacked, a low melting point metal which is heated and melted is injected and penetrated into a gap between the pipes. Electricity can be passed to the inner and outer anode ferrite pipes with low resistance.

In this case, the efficiency is improved by disposing a corrosion-resistant conductive metal tube as a cathode with a distance of 0.5 to 5.0 mm between the inside and outside of the two-layer anode ferrite pipe as the cathode. Good electrolysis can be performed. By repeating the same process, it is possible to manufacture a coaxial multilayer cylindrical electrolytic device having many layers.

A cylindrical anode and a cathode are alternately and concentrically combined (20), placed in a container (15) such that the portion is vertical, and an aqueous solution containing halogen ions is supplied between the poles. When the electrolysis is carried out so as to have a predetermined residual halogen concentration, an electrolysis reaction is carried out in the interelectrode reaction section (10), so that hypohalous acid and active oxygen are mainly produced, and secondary electrodes are formed from the electrode surface. The generated hydrogen and oxygen are generated and rise violently. An aqueous solution containing halogen ions is naturally sucked in from the inlet (8) below the electrolytic device by the rise of the air bubbles, that is, the so-called air lift, and the electrolytic reaction is performed in the inter-electrode reaction section. It is sent out from the outlet (9) of the container.

Water containing halogen ions is poured into the container (16), and the above-mentioned electrolytic device is connected to the terminal cover (1).
5) When the electrolysis is carried out by immersing only in the water surface, the water in the vessel is converted into halogen ions from the inlet (8) below the electrolytic device by an airlift from the inlet (8) below the reactor. The contained aqueous solution is naturally sucked in, and the sterilizing water generated by the electrolytic reaction in the gap reaction section is sent to the outside from the outlet (9) of the container. Is gradually increased, so that the residual halogen concentration sensor (21) controls the electrolysis so that the residual halogen concentration of the water in the container becomes a set concentration, takes out the generated sterilizing washing water, and simultaneously removes the halogen. Since an automatic control mechanism for replenishing an aqueous solution containing ions is provided, it is possible to always produce sterilized cleaning water having a desired residual halogen concentration.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. (Example 1) FIG. 1, an anode (1) is round tubes nickel ferrite (effective length 280mm, outer diameter 28mm, electrode area 2.6Dm ^2, the cathode (2) is round tube titanium (effective length 280mm , Inner diameter 3
6 mm, the electrode area is 2.6 dm ² ), and the terminals (3, 3
4) is also used as a fixing bolt for fixing the electrode tube to the electrode fixing part (14), and both the anode terminal and the cathode terminal are located at both ends of the tube at two locations at the top and bottom, so that one tube is suppressed in total.

In this embodiment, a nickel ferrite round tube is used for the anode (1) and a titanium round tube is used for the cathode (2). In the case of a small capacity and a small current (5 Amp or less), platinum-plated titanium is used for the anode. In the case where a plurality of cylindrical anodes (1) and cathodes (2) are alternately arranged at intervals between the poles in a concentric manner and stacked one on another, nickel ferrite may be used. The assembly of the device is easier than using it.

In FIG. 1, water containing halogen ions is injected from the inlet (8) into the interelectrode reaction section, undergoes electrolysis, becomes sterile washing water, and is supplied to the outside from the outlet (9). By adding an aqueous solution addition unit and a control unit, it is possible to make a small and simple sterilization washing water generation device, and it can be arranged horizontally or vertically, so it can be used directly in a narrow place by directly connecting to the water tap I can do it.

When the electric conductivity of the nickel ferrite round tube as the anode (1) is examined, as shown in FIG. 5 and Table 1, at 5 Amp., The resistance value between the two points in the longitudinal direction of nickel ferrite is 100 mm and 8. 3Ω, 12.0Ω at 200mm, 300
In mm, it is 16.0Ω, and the resistance is considerably large. As shown in FIG. 1, by attaching eight terminals together with fixing screws at four places along the circumference near both ends of the nickel ferrite electrode, it was possible to conduct 10 Ω at 5 Amp. 300 mm.

(Example 2) In FIG. 2, the anode (1) is a nickel ferrite cylinder having an outer diameter of 28 mm, a thickness of 8 mm, and a length of 280 mm. An SUS316L pipe having an outer diameter of 42.7 mm, a thickness of 3 mm, an electrode part length of 280 mm, and a total length of 325.1 mm, and an aqueous solution containing halogen ions in the electrode fixing part 1 (13) made of a non-conductive material at the bottom. There is an inlet (8) for supplying the interelectrode reaction unit (10), and an electrolytic sterilization washing water outlet (9) is provided at the uppermost electrode fixing unit 2 (14).

In this embodiment, a ferrite tube sintered by extrusion molding on the anode (1) is used, and a soft conductive low-melting metal bonding portion (6) is inserted into the tube in advance. Then, the terminal body (5) with the anode terminal (3) attached to the upper end is pushed in and fixed. As the low melting point metal, lead (mp 327 ° C), wood alloy (mp 73 ° C, Bi5
0, Pb25, Sn13, Cd12) and mercury (liquid at room temperature), whose electrical resistivity is 20.8 × 10 ⁻⁶ Ω · lead.
cm, wood alloy 31.3 × 10 ⁻⁶ Ω · cm, mercury 9
Although it was 8.4 × 10 ⁻⁶ Ω · cm, nickel ferrite was as high as 0.25 Ω · cm.

The lead and wood alloy were inserted by winding a thin plate having a thickness of 1 mm so as to be adhered to the inside of a nickel ferrite cylinder. The terminal body (5) was inserted by turning slowly and fixed. SUS3
The electrical resistivity of 04 was 72 × 10 ⁻⁶ Ω · cm. In the case of lead as well as wood alloy, if the terminal is threaded, it is possible to insert and connect the terminal body (5) with sufficient adhesion without heating, but better results can be obtained by heating. Was done.

Since mercury is a liquid at room temperature, 15 ml of mercury is put in advance into the long hole (7) of the ferrite whose bottom is sealed by the electrode fixing part 1 (13) and the O-ring (12). When the terminal body (5) with the anode terminal (3) is gently inserted, the mercury sufficiently penetrates into the gap between the terminal body and the ferrite, and the extra part comes out.
This mercury is stored in the space at the upper end of the O-ring (12) and the terminal body in 4). The upper part of the anode was sealed with an electrode fixing part 2 (14) and an O-ring, and the conduction resistance to the anode was measured as in Example 1.

As shown in FIG. 3, lead, wood alloy, and mercury are sandwiched between the nickel ferrite anode (1) and the terminal body (5) as conductive and low-melting metals, respectively.
As shown in FIG.
The point and the power supply device were connected by an electric wire, and one point at the end was fixed, and the other point was changed in position so that an energizing distance of 100 to 300 mm could be taken, a current of 5 Amp. Was passed, and the resistance value was measured.

In Table 1, since the electric resistance of ferrite alone is large, the energization resistance increases as the energization distance increases, and electrolysis becomes difficult. When lead, wood alloy, or mercury is used, the resistance is greatly reduced, and the influence of the energization distance is reduced. It is even better when the terminal body is inserted after heating near the melting point, and the best results are obtained in these tests because mercury is a liquid and penetrates into narrow gaps without heating.

On the outside of this, SUS316 is used as a cathode (2).
When the L pipe is attached at a distance of 4 mm between the poles and the anode and the cathode are fixed by the electrode fixing part 2 (14), the electrolytic device main body is completed.

(Embodiment 3) FIG. 4 shows an embodiment of an apparatus for producing a germicidal washing water having a high residual chlorine concentration using the electrolyzer assembled in the embodiment 2, and a germicidal washing water container (1).
6) Four sets of electrolyzers are installed, and a 2.5% saline solution (electrical conductivity 49,000 μS / cm) is used as a water containing halogen ions at a predetermined WL (set water level).
Until (24), 16 liters were charged and electrolysis was performed at 15 Amp.
The current, voltage and residual chlorine concentration were measured every 15 minutes, and the results are shown in Table 2 and FIG.

In this embodiment, sterilizing cleaning water 16 having a high residual chlorine concentration is used to sterilize and clean medical equipment and hospital sheets.
This was carried out for the purpose of generating liters in a short time. The results obtained when only one set of electrolytic devices having an anode area of 2.6 dm ² were operated and when four sets were operated simultaneously were 630 p. p. m. For 4 sets, 2510p. p. m. Met.

[0030]

The present invention is configured as described above and has the following effects.

(A) According to the first aspect of the present invention, the electrode is cylindrical, and the anode and the cathode are alternately arranged coaxially on top of each other, so that the structure is small, compact and durable. The case made of vinyl resin can also be made durable with a cylindrical and simple structure, and there is no liquid leakage from the electrolytic device even when used for a long time. Also, as shown in FIG. 2, if the electrolytic device is fixed so that all the terminals are attached to the upper end and the terminal cover (5) is above the water surface, it can be directly placed in a target water container without being housed in a sturdy case. The heat generated by the electrode is absorbed by the water in the container and cooled.
On the other hand, the water in the container is sucked and electrolyzed into the electrolyzer by an air lift caused by the bubbling and rising of the gas generated in the gap reaction section (10), and is discharged. Even without a pump, the water in the container is automatically circulated. It can be electrolyzed to increase the residual chlorine concentration.

(B) According to the second aspect of the present invention, the terminal body (5) and the low-melting-point metal bonding portion (6) are brought into contact with and bonded to each other over a wide area of nickel ferrite, whereby the conductivity can be increased. Therefore, the corrosion resistance is high, but the specific resistance is 0.1.
25 Ω · cm, which is much higher than the order of 10 ⁻⁶ Ω · cm of copper, platinum, lead, etc. used for electrodes. I was able to do it. The melting point of the low melting point alloy can be arbitrarily selected depending on the composition.Wood alloy is 73 ° C. and is usually solid. It has the effect of melting and filling the gap, lowering the electrical resistance and continuing normal electrolysis.

(C) According to the third aspect of the present invention, a long hole (7) drilled in the center axis direction of a ferrite round bar or a low melting point metal tube (6) in a ferrite pipe in advance.
Is inserted, and a threaded conductive metal rod terminal body (5) is screwed into the outer periphery, so that the soft low-melting metal fills the gap between the terminal body and the ferrite to improve the connection.

(D) According to the fourth aspect of the present invention, the conductive low-melting metal which has become a liquid by heating or mercury which is already a liquid penetrates into the gap between the terminal body and the nickel ferrite, and from the terminal body. The conductivity to nickel ferrite is further improved.

(E) According to the fifth aspect of the invention, when a plurality of cylindrical anodes are used coaxially, the anode (1) located at the most central position
Although the terminal can be connected by the invention of claim 1, the nickel ferrite anode outside the same cannot be formed in the same manner, so that two nickel ferrite anodes having different diameters are laminated and a cylindrical ferrite anode is interposed therebetween. A terminal body (5) made of a conductive metal is inserted, and a nickel ferrite anode and a terminal body are combined with a conductive low melting point metal or mercury to form an integrated cylindrical anode. Cylindrical cathodes are placed at a distance between the poles of 0.5 to 5.0 mm. By configuring the anode in this way, not only can the terminal connection be reliably performed over a wider area,
This anode can be used upside down.

(F) According to the sixth aspect of the invention, the ferrite round bar or the round tube is formed by extrusion molding.
It is also possible to manufacture long ones over 1m
By increasing the length of the terminal body according to the present invention, it is possible to manufacture a long and large electrode, and by using this vertically, it is possible to design an electrolytic device having a very small installation area,
It is useful as a germicidal washing water generator for intensive care units and the like in hospitals.

(G) According to the seventh aspect of the present invention, in the case of the long ferrite electrode as described in the preceding paragraph, a further good coupling between the terminal body and the long ferrite electrode is required, so that the effect is further enhanced. .

(H) According to the eighth aspect of the present invention, since the electrolyzer can be directly installed in the sterilizing / washing water container (16), it can be installed in a narrow place without extra piping. The water in the sterilizing and cleaning water container (16) is circulated between the container and the electrolytic device without a pump by using an air lift, and is repeatedly subjected to electrolytic treatment to efficiently increase the residual halogen concentration. In this case, as the water containing halogen ions, not only tap water and well water, but also bath water, pool water, fish tank water, and wastewater combined with treated water to which halogen ions have been appropriately added are supplied. In addition, water can be purified and sterilized.

(I) According to the ninth aspect of the invention, the measurement of the residual halogen concentration is performed by the residual halogen concentration sensor (2).
Since the electrolysis is controlled by the control device according to 1), it is possible to always use sterilized washing water of a certain concentration safely for sterilizing and washing medical devices and preventing infection in hospitals.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an electrolytic device including a cylindrical anode and a cathode.

FIG. 2 is a cross-sectional view showing a state in which a terminal body and a low-melting-point metal bonding portion are inserted inside an anode of an electrolytic device including a cylindrical anode and a cathode.

FIG. 3 is a diagram showing a method of an experiment for examining how the energization voltage changes depending on the position of the nickel ferrite anode and the terminal and the manner of coupling in Example 1. 5 current between two points on nickel ferrite anode cylinder surface
Run Amp. And measure the voltage. A low-melting metal bonding part (6) and a terminal body (5) are mounted inside a nickel ferrite anode cylinder, and a current of 5 Amp. Is applied between two points on the cylinder surface to measure a voltage. First put 15 ml of mercury inside the nickel ferrite anode cylinder, then attach the terminal body (5)
A current of 5 Amp. Is applied between the points to measure the voltage.

FIG. 4 shows a sterilizing and washing water container (16) using the electrolytic device shown in FIG. 2;
FIG. 4 is a cross-sectional view of a sterilizing and washing water generating apparatus mounted in four sets.

FIG. 5 is a plan view of the sterilizing and washing water generating apparatus shown in FIG. 4 as viewed from above.

FIG. 6 is a graph showing the measurement results of the electrolysis time and the residual halogen concentration of the sterilization / wash water generation device equipped with one set of 2.6 dm ² electrolysis devices and four sets of electrolysis devices.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anode 2 Cathode 3 Anode terminal 4 Cathode terminal 5 Terminal body 6 Low melting point metal binding part 7 Slot of ferrite 8 Entrance of aqueous solution containing halogen ions 9 Electrolytic sterilization washing water outlet 10 Interelectrode reaction part 11 Seal part 1200 Ring DESCRIPTION OF SYMBOLS 13 Electrode fixing part 1 14 Electrode fixing part 2 15 Terminal cover 16 Electrolytic sterilization washing water container 17 Cover part 18 Bottom part 19 Supply port of aqueous solution containing halogen ions 20 Electrolytic sterilization cleaning water outlet 21 Residual halogen concentration sensor 22 Electrolyzer 23 Electrolyzer fixing part 24 Disinfection washing water level (WL) 25 Test terminal (+) 26 Test terminal (-)

[Table 1] Voltage V of 5 Amp.

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (reference) C02F 1/50 550 C02F 1/50 550D 550L 560 560F C25B 9/00 C25B 11/02 302 11/02 302 A61L 2/18 // A61L 2/18 C25B 9/00 A F-term (reference) 4C058 AA06 AA12 AA21 AA29 BB02 EE26 4D061 DA03 DA06 DA07 DA08 DB01 DB10 EA02 EB01 EB04 EB14 EB16 EB17 EB20 EB28 EB30 EB33 AEB18 EB13 EB34 EB39 EB34 EB13 EB39 EB34 4K021 AA09 BA02 CA05 DC07

Claims (9)

[Claims] 1. A plurality of cylindrical anodes (1) and cathodes (2) are alternately arranged concentrically at an inter-electrode distance, and are arranged one on top of another.
An electrolysis method characterized by generating sterilizing washing water containing a large amount of hypohalous acid and active oxygen by electrolyzing an aqueous solution containing a halogen ion between the poles. 2. An anode (1) as described in the preceding paragraph, wherein the central anode (1) is a ferrite round bar or a ferrite pipe having a hole elongated in the center axis direction, and a conductive metal rod slightly smaller than the hole diameter. Is inserted as a terminal body (5), and a soft conductive low-melting-point metal bonding portion (6) is sandwiched between the outer periphery and the hole of the metal rod terminal body over the entire surface. An electrolytic method characterized in that a non-corrosive metal tube is disposed concentrically as a cathode (2). 3. A ferrite pipe according to claim 1, wherein said ferrite pipe has a long hole (7) drilled in the center axis direction, or a long cylindrical soft conductive low-melting metal joint (10) in a ferrite pipe. 6. An electrolytic method, wherein 6) is inserted, and a conductive rod-shaped terminal body (5) threaded on the outer periphery is screwed into an anode to form an anode. 4. The conductive terminal body according to claim 1, wherein:
An electrolysis method characterized by heating the conductive low-melting-point metal bonding portion (6) inserted beforehand so as to exhibit fluidity, or using mercury which is liquid at room temperature when screwing in. 5. The method according to claim 1, wherein when the ferrite pipe is used as the cylindrical anode, the outer diameter is 1 to 5 mm.
Two different ferrite pipes and a conductive metal pipe having an intermediate diameter and a thickness of about 1 to 2 mm are inserted as a terminal body (5), overlapped coaxially, and heated and melted in a gap between them. An electrolysis method characterized by using, as an anode, a material impregnated with a melting point metal or mercury. 6. A cylindrical anode (1) and a cathode (2) are arranged concentrically at a distance between the poles and superposed on each other, and a centrally located anode (1) has a long hole (1) in its central axis direction. 7) A ferrite round bar or a round tube in which a long cylindrical soft conductive low-melting-point metal bonding portion (6) is inserted in advance, and the outer periphery is threaded. The terminal body (5) in the form of a rod is screwed into an anode, and a corrosion-resistant metal tube is arranged concentrically as a cathode (2) on the outside thereof. An aqueous solution containing a halogen ion is fed between the electrodes to perform electrolysis and sterilization. An electrolytic device for producing washing water. 7. The conductive terminal body according to claim 1, wherein:
An electrolyzer characterized by heating a conductive low-melting-point metal when fluid is inserted or using mercury that is liquid at room temperature. 8. A cylindrical anode (1) and a cathode (2) according to each of the above items are alternately and concentrically combined with each other at least one or more, and are vertically installed in an electrolytic sterilization washing water container (15). Then, an aqueous solution containing a halogen ion is supplied between the poles, and electrolysis is performed to a predetermined halogen concentration,
An electrolytic device, wherein the generated sterilizing and washing water is taken out of the container. 9. The electrolytic sterilizing and cleaning water container (16) according to the preceding paragraph, wherein the residual halogen concentration sensor (21) measures the residual halogen concentration of water in the electrolytic sterilizing and cleaning water container (16) to control electrolysis. Until the residual halogen concentration of the water in the container reaches the set concentration, the water in the container is subjected to an air lift by a gas generated by electrolysis from the inlet (8) of the aqueous solution containing halogen ions to the inter-electrode reaction section ( 10) and returned to the electrolytic disinfection washing water container (16) from the electrolytic disinfection washing water outlet (9) as sterilization washing water rich in hypochlorous acid and active oxygen by electrolysis reaction. This circulation is repeated until the residual halogen concentration reaches the set value, and the sterilized washing water having reached the set residual halogen concentration is taken out, provided for use, and contains new halogen ions. An electrolyzer comprising an automatic control mechanism for replenishing an aqueous solution.