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WO2014123138A1 - Unité de production d'eau électrolysée et dispositif d'alimentation en eau la comprenant - Google Patents

Unité de production d'eau électrolysée et dispositif d'alimentation en eau la comprenant Download PDF

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Publication number
WO2014123138A1
WO2014123138A1 PCT/JP2014/052630 JP2014052630W WO2014123138A1 WO 2014123138 A1 WO2014123138 A1 WO 2014123138A1 JP 2014052630 W JP2014052630 W JP 2014052630W WO 2014123138 A1 WO2014123138 A1 WO 2014123138A1
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WIPO (PCT)
Prior art keywords
water
electrode
water supply
electrolyzed
ion adsorption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/052630
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English (en)
Japanese (ja)
Inventor
吉田　陽
武史 河津
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Sharp Corp
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Sharp Corp
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Publication of WO2014123138A1 publication Critical patent/WO2014123138A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126—Water cooler
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/46115—Electrolytic cell with membranes or diaphragms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4616—Power supply
    • C02F2201/4617—DC only
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/12—Location of water treatment or water treatment device as part of household appliances such as dishwashers, laundry washing machines or vacuum cleaners

Definitions

  • the present invention relates to an electrolyzed water generating unit that generates acidic water and / or alkaline water as electrolyzed water, and a water supply device including the same.
  • a function to suppress the generation or propagation of bacteria and mold contained in water held in the device It is required to have a function of sterilizing bacteria and mold. And these functions are exhibited when electrolyzed water is produced
  • Patent Document 1 discloses a water storage tank for ice making, and an electrolyzed water generation unit for electrolyzing water in the water storage tank.
  • the electrolyzed water generating unit includes a pair of electrodes, and a refrigerator in which electrolyzed water is generated by applying a voltage between the pair of electrodes is disclosed.
  • the present invention has been made in view of the above problems, and an object of the present invention is to efficiently generate electrolyzed water and to sufficiently exhibit the sterilization or cleaning effect of the generated electrolyzed water.
  • An object of the present invention is to provide an electrolyzed water generating unit and a water supply device including the same.
  • the electrolyzed water generating unit includes a flowing water path through which water flows, an ion adsorption electrode and a metal electrode arranged in the flowing water path, and the ion adsorption electrode and the metal electrode intersect with the flowing water direction.
  • Acid water or alkaline water is generated by applying a direct current voltage between the ion-adsorbing electrode and the metal electrode.
  • the electrolyzed water generating unit according to the present invention preferably further includes an ion exchange resin that is disposed between the ion adsorption electrode and the metal electrode and is capable of flowing the water.
  • the resin preferably includes a cation exchange resin.
  • a water supply apparatus is connected to the electrolyzed water generation unit, the water storage tank for storing the water to be introduced into the water flow path, and the water flow path, and is located on the side opposite to the water flow path side.
  • a water supply path for supplying the acidic water or the alkaline water from the end to the outside, and a power supply device that applies a DC voltage to the ion adsorption electrode and the metal electrode.
  • the power supply device preferably has switching means for switching between positive and negative of a DC voltage applied between the ion adsorption electrode and the metal electrode.
  • the switching means switches alternately the positive / negative of the DC voltage applied between the ion adsorption electrode and the metal electrode, whereby the acidic water and the alkaline water are alternately generated in the electrolyzed water generating unit. It is preferable. Furthermore, in this case, it is preferable that the generated acidic water or alkaline water is supplied to the outside via the water supply path.
  • the water supply path is filled with the acidic water when the water supply is stopped.
  • generation unit which can fully exhibit the disinfection or washing
  • FIG. 3 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line III-III shown in FIG. 2. It is the schematic sectional drawing seen from the direction parallel to the flowing water direction of the electrolyzed water generating unit concerning modification 2. It is the schematic sectional drawing seen from the direction orthogonal to the flowing water direction of the electrolyzed water production
  • FIG. 3 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line III-III shown in FIG. 2. It is the schematic sectional drawing seen from the direction parallel to the flowing water direction of the electrolyzed water generating unit concerning modification 2. It is the schematic sectional drawing seen from the direction orthogonal to the flowing water direction of the electrolyzed water production
  • FIG. 3 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line III-III shown in FIG. 2. It is the schematic sectional drawing seen from the direction parallel to the flowing water
  • FIG. 7 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line VII-VII shown in FIG. 6. It is a perspective view of the electrolyzed water production
  • FIG. It is the schematic of the refrigerator which concerns on Embodiment 2 of this invention.
  • FIG. 1 is a schematic cross-sectional view of the electrolyzed water generating unit according to Embodiment 1 of the present invention as viewed from a direction orthogonal to the flowing water direction. With reference to FIG. 1, the electrolyzed water production
  • the electrolyzed water generating unit 1 includes a flowing water path 2, an ion adsorption electrode 4, a metal electrode 5, and a power supply device 10.
  • the power supply device 10 includes a power supply 11 that allows a direct current to flow in one direction (DR11 direction), and is electrically connected to the ion adsorption electrode 4 and the metal electrode 5. Specifically, the positive electrode of the power source 11 is connected to the metal electrode 5, and the negative electrode of the power source 11 is connected to the ion adsorption electrode 4.
  • the ion adsorption electrode 4 is formed in a flat plate shape and extends along the flowing water direction (DR3 direction).
  • the ion adsorption electrode 4 adsorbs or releases ions reversibly.
  • the ion adsorption electrode 4 was formed by aggregating activated carbon, a conductive sheet formed by aggregating granular activated carbon, a conductive sheet formed by aggregating granular activated carbon and conductive carbon, and activated carbon particles.
  • Activated carbon blocks, activated carbon fiber cloth (Cloth), etc. can be used.
  • the metal electrode 5 is formed in a flat plate shape and extends along the flowing water direction (DR3 direction).
  • the metal electrode 5 is used as a counter electrode of the ion adsorption electrode 4.
  • an inexpensive good conductor metal such as a nickel material or a titanium material coated with gold or platinum, or gold or platinum can be used.
  • acidic water is generated by applying a DC voltage between the ion adsorbing electrode 4 and the metal electrode 5 by the power supply device 10.
  • the water 3 is electrolyzed by a chemical reaction represented by the following formula (1).
  • negative ions such as Cl ⁇ ions and SO 4 2 ⁇ ions are attracted to the positive electrode side
  • H + ions generated by electrolysis are Cl ⁇ ions, SO 4 2 ⁇ ions, etc. in the vicinity of the metal electrode 5.
  • acidic water since acidic water has a bactericidal effect, it can sterilize the bacteria and mold in the flowing water path 2, and can suppress generation
  • the water 3 is electrolyzed by a chemical reaction as shown in the following formula (2).
  • cations such as Na + ions and Ca 2+ ions are attracted to the negative electrode side
  • OH ⁇ ions generated by electrolysis are combined with Na + ions and Ca 2+ ions in the vicinity of the metal electrode 5, Alkaline water is produced.
  • the alkaline water has a cleaning effect such as removing lipids, the inside of the flowing water path 2 can be cleaned. Further, when there is a route that follows the flowing water route 2, the same effect can be exerted in the route.
  • the electrolyzed water generating unit 1 With the configuration as described above, in the electrolyzed water generating unit 1 according to the present embodiment, electrolysis is not performed on both the positive electrode side and the negative electrode side, and acidic water or Either alkaline water will be produced. For this reason, it can suppress that acidic water and alkaline water are neutralized in the flowing water path 2. Accordingly, the electrolyzed water can be efficiently generated without wasting power, and the produced electrolyzed water can be sufficiently sterilized or washed.
  • FIG. 2 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 1 as viewed from the direction orthogonal to the flowing water direction.
  • FIG. 3 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line III-III shown in FIG. With reference to FIG. 2 and FIG. 3, the electrolyzed water production
  • the electrolyzed water generating unit 1A according to the present modification has an arrangement of the ion adsorption electrode 4A and the metal electrode 5A and the electrolyzed water generating unit 1 according to the first embodiment and The shape is different.
  • the ion adsorption electrode 4A is formed in a cylindrical shape, and the metal electrode 5A is formed in a columnar shape.
  • the ion adsorption electrode 4A and the metal electrode 5A are arranged so that their central axes are coaxial.
  • the metal electrode 5 ⁇ / b> A is disposed at the approximate center of the flowing water path 2
  • the ion adsorption electrode 4 ⁇ / b> A is disposed along the inner wall of the flowing water path 2.
  • the peripheral surface of the metal electrode 5A and the inner surface of the ion adsorption electrode 4A are opposed to each other in a direction intersecting the flowing water direction (DR3 direction).
  • the distance between the ion adsorption electrode 4A and the metal electrode 5A can be easily made uniform, and the surface area of the ion adsorption electrode 4A can be increased.
  • the ion in the water 3 can be uniformly adsorbed on the surface of the ion adsorption electrode 4A when a voltage is applied, and the ion adsorption allowable amount can be increased.
  • FIG. 4 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 2 as viewed from a direction parallel to the flowing water direction. With reference to FIG. 4, the electrolyzed water production
  • the electrolyzed water generating unit 1B according to the present modified example has a conductive member 7 and a connection electrode 8 on the outer periphery of the ion adsorption electrode 4A. Are different in that they are arranged.
  • the conductive member 7 is disposed so that the inner surface thereof is in contact with the outer surface of the ion adsorption electrode 4 ⁇ / b> A, and the connection electrode 8 is in contact with the outer surface of the conductive member 7.
  • the conductive member 7 is disposed so that the inner surface thereof is in contact with the outer surface of the ion adsorption electrode 4 ⁇ / b> A, and the connection electrode 8 is in contact with the outer surface of the conductive member 7.
  • connection electrode 8 is a part for passing a current to the ion adsorption electrode 4A, and for example, a metal of a good conductor can be used. With this configuration, the connection electrode 8 is not in contact with water, and a current can flow through the ion adsorption electrode via the conductive member 7, so that the connection electrode 8 is electrolyzed. Can be prevented. As a result, ions are efficiently adsorbed to the ion adsorption electrode 4A.
  • FIG. 5 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 3 as seen from the direction orthogonal to the flowing water direction. With reference to FIG. 5, the electrolyzed water production
  • the electrolyzed water generating unit 1 ⁇ / b> C according to the present modification has a gap between the ion adsorption electrode 4 and the metal electrode 5 when compared with the electrolyzed water generating unit 1 according to the first embodiment.
  • the ion exchange resin 6 is different in that it is arranged so that water can flow.
  • the ion exchange resin 6 includes a cation exchange resin.
  • a cation exchange resin for example, Diaion (registered trademark) SK1C manufactured by Mitsubishi Chemical Corporation can be employed as the cation exchange resin.
  • the cation exchange resin has a cation group as an exchange group, releases a cation in the cation group, and adsorbs a cation (Ca 2+ ion, Mg 2+ ion) in the water 3. For this reason, the ion exchange resin 6 can soften the water 3 by the ion exchange action of the cation exchange resin even when no voltage is applied to the ion adsorption electrode 4 and the metal electrode 5.
  • the cation exchange resin contained in the ion exchange resin 6 is preferably a salt type such as Na type. In this case, since Na + ions and the like are released without releasing H + ions, softening can be performed without changing the pH value of water 3 when no voltage is applied. Become. In addition, the ion exchange resin 6 described later can be easily regenerated.
  • the ion exchange resin 6 a mixed bed type obtained by mixing a cation exchange resin and an anion exchange resin can be adopted, and a strong acid cation exchange resin, a weak acid cation exchange resin, a strong acid cation exchange resin, A basic anion exchange resin and a weak basic anion exchange resin can be appropriately combined.
  • a strong acid cation exchange resin, a weak acid cation exchange resin, a strong acid cation exchange resin, A basic anion exchange resin and a weak basic anion exchange resin can be appropriately combined.
  • the pH value of the water 3 is not easily changed and can be desalted, so that water with higher purity is generated. be able to.
  • the ion exchange resin 6 has both a cation group and an anion group as exchange groups. Therefore, when anion is adsorbed on the ion adsorption electrode 4 to generate alkaline water, the anion released from the anion exchange resin functions as an electrolyte, and the ion adsorption electrode 4 adsorbs a cation to be acidic. When water is generated, the cation released from the cation exchange resin functions as an electrolyte. Thus, the ion exchange resin 6 adsorbs cations or anions in water and functions as a current-carrying medium for passing a current between the ion adsorption electrode 4 and the metal electrode 5. Thereby, electrolysis is efficiently performed without adding an auxiliary electrolyte separately. For this reason, electrolyzed water can be efficiently generated regardless of whether alkaline water or acidic water is generated.
  • cations such as Ca 2+ ions and Mg 2+ ions in water 3 are adsorbed to the Na-type cation exchange resin, and Na + ions are released from the cation exchange resin.
  • water SO 4 2-ions, PO 4 3- ions, NO 3 - anions, such as ion adsorbed on the Cl type anion exchange resin, Cl - ions are released from the anion exchange resin .
  • a decrease in electrical conductivity can be prevented.
  • the ion exchange resin 6 has a shape in which minute granular cation exchange resin and anion exchange resin are assembled as a structure capable of flowing water.
  • cation exchange resins and anion exchange resins have a granular shape with a diameter of about 300 to 1000 ⁇ m.
  • the structure capable of flowing water is not limited to the above structure, and the ion exchange resin 6 may be formed in a porous shape in which a plurality of holes communicate from upstream to downstream, or the ion exchange resin 6 is granular.
  • the cation exchange resin may be used alone.
  • the electrolyzed water generating unit 1C according to the present modification can soften the water 3 even when no voltage is applied. When the voltage is applied, the ion exchange of the ion exchange resin 6 is performed. Electrolyzed water can be generated more efficiently by the action.
  • a sodium chloride aqueous solution can be used in the regeneration treatment, so that the ion exchange is performed by flowing or immersing the sodium chloride aqueous solution in the flowing water path 2.
  • the resin 6 can be regenerated. Since the sodium chloride aqueous solution is generally widely used, the user can easily perform the regeneration treatment.
  • the ion exchange cartridge in which the ion exchange resin 6 is accommodated in a case or bag having a mesh diameter smaller than the particle diameter is the ion adsorption electrode 4 and the metal electrode. 5 may be arranged in a gap between the two.
  • the case or bag is preferably composed of a resin or cloth having acid resistance and alkali resistance.
  • a resin such as PET (Polyethylene Terephthalate) or PTFE (Polytetrafluoroethylene) can be adopted.
  • the ion exchange cartridge by making the ion exchange cartridge detachable from the electrolyzed water generating unit, the ion exchange cartridge can be taken out independently and subjected to a regeneration process.
  • regeneration solutions such as sodium chloride aqueous solution
  • corrosion and deterioration of the ion adsorption electrode 4 and the metal electrode 5 by a regeneration solution can be prevented.
  • the ion exchange resin can be handled in units of cartridges, handling becomes easy.
  • FIG. 6 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 4 as seen from the direction orthogonal to the flowing water direction.
  • FIG. 7 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line VII-VII shown in FIG.
  • FIG. 8 is a perspective view of the electrolyzed water generating unit shown in FIG.
  • the electrolyzed water generating unit 1D according to this modification will be described with reference to FIGS. 6, 7 and 8.
  • FIG. 6 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 4 as seen from the direction orthogonal to the flowing water direction.
  • FIG. 7 is a schematic cross-sectional view seen from a direction parallel to the flowing water direction along the line VII-VII shown in FIG.
  • FIG. 8 is a perspective view of the electrolyzed water generating unit shown in FIG.
  • the electrolyzed water generating unit 1D according to this modification will be described
  • the electrolyzed water generating unit 1 ⁇ / b> D according to the present modified example has an ion adsorption when compared with the electrolyzed water generating unit 1 ⁇ / b> A according to the modified example 1 illustrated in FIGS. 2 and 3.
  • the difference is that a substantially cylindrical ion exchange resin 6A is disposed in the gap between the electrode 4A and the metal electrode 5A so that water can flow.
  • the ion exchange resin 6A has the same configuration as that of the ion exchange resin 6 shown in the third modification.
  • the electrolyzed water generating unit 1D according to the present modification can obtain substantially the same effect as the electrolyzed water generating unit 1A according to the modified example 3, and can generate electrolyzed water more efficiently.
  • FIG. 9 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 5 as viewed from a direction parallel to the flowing water direction. With reference to FIG. 9, the electrolyzed water production
  • the electrolyzed water generating unit 1E according to the present modified example is connected to the conductive member 7 and the connection on the outer periphery of the ion adsorption electrode 4A.
  • the difference is that the electrode 8 is disposed.
  • the electrolyzed water generating unit 1E according to the present modification can obtain substantially the same effect as the electrolyzed water generating unit 1D according to the modified example 4, and also prevents electrolysis at the connection electrode 8. can do.
  • FIG. 10 is a schematic cross-sectional view of the electrolyzed water generating unit according to Modification 6 as seen from the direction orthogonal to the flowing water direction. With reference to FIG. 10, the electrolyzed water production
  • the electrolyzed water generating unit 1F according to the present modification is different from the electrolyzed water generating unit 1C according to the modified example 3 shown in FIG.
  • the power supply device 10F of the electrolyzed water generating unit 1F according to the modification 6 includes a control unit 15, power supplies 11 and 12, and selection switches 13 and 14 as switching means.
  • the power supply 11 passes a direct current in one direction (DR11 direction) with respect to the ion adsorption electrode 4 and the metal electrode 5.
  • the power supply 12 passes a direct current through the ion adsorption electrode 4 and the metal electrode 5 in the direction opposite to the power supply 11 (DR12 direction). More specifically, the positive electrode of the power source 11 is connected to the metal electrode 5, and the negative electrode of the power source 11 is connected to the ion adsorption electrode 4.
  • the negative electrode of the power source 12 is connected to the metal electrode 5, and the positive electrode of the power source 12 is connected to the ion adsorption electrode 4.
  • the power supplies 11 and 12 are connected in parallel via the selection switches 13 and 14.
  • the selection switches 13 and 14 are connected to the power supplies 11 and 12 and select the power supplies 11 and 12.
  • the control unit 15 controls the on / off state of the selection switches 13 and 14 to switch between the positive and negative DC voltages applied between the ion adsorption electrode 4 and the metal electrode 5.
  • the power supply device 10F may not include both the power supply 11 and the power supply 12, and may include, for example, one power supply 11 and a switch that can reverse the polarity of the power supply 11, that is, the ion adsorption electrode 4 Any configuration that can switch between positive and negative DC voltage applied to the metal electrode 5 and on / off of DC voltage application may be used.
  • the electrolysis based on the above-described equation (1) is performed, and acidic water is generated.
  • electrolysis based on the above-described equation (2) is performed, and alkaline water is generated.
  • the positive and negative DC voltages applied by the selection switches 13 and 14 are alternately switched, so that acidic water and alkaline water are alternately generated.
  • a reverse DC voltage is applied to the ion adsorption electrode 4, so that the adsorbed cation and ion adsorption
  • the polarity with the electrode 4 is the same.
  • cations such as Ca 2+ and Mg 2+ ions adsorbed on the ion adsorption electrode 4 during the generation of acidic water are repelled by the Coulomb force and released from the ion adsorption electrode 4.
  • a part of the released cation is adsorbed on the ion exchange resin 6, and is used as if an auxiliary electrolyte was added at the time of the next electrolysis. Thereby, electrolysis can be performed more efficiently.
  • the remaining part of the released cations is released into water. Thereby, alkaline ion with high hardness can be produced
  • the substances that can be washed differ depending on the hardness of the alkaline water, by appropriately adjusting the amount of cations adsorbed on the ion adsorption electrode 4A during the generation of acidic water and the amount of cations released into the alkaline water production water The desired material can be washed.
  • the electrolyzed water generating unit 1F according to the present modification can obtain substantially the same effect as the electrolyzed water generating unit 1C according to the third modification.
  • acidic water or alkali-generated water can be generated alternately, the bactericidal effect of acidic water and the cleaning effect of alkali-generated water can be exhibited.
  • the configuration in which the electrolyzed water generation unit includes a power supply device has been described as an example.
  • the configuration is not limited thereto, and the power supply device is not provided. It is good also as a structure.
  • the power supply used in the drinking water supply device or the refrigerator provided with the electrolyzed water generation unit can be used as a power supply device that applies a DC voltage between the ion adsorption electrode and the metal electrode. .
  • a DC voltage can be applied between the ion adsorption electrode and the metal electrode.
  • the power supply device 10F shown in the above-described modification 6 can be used in place of the power supply device 10 included in the electrolyzed water generation unit according to the first embodiment and the modifications 1 to 5.
  • acidic water and alkaline water can be generated alternately in the electrolyzed water generating unit according to Embodiment 1 and Modifications 1 to 5.
  • FIG. 11 is a schematic diagram of a refrigerator according to the second embodiment of the present invention. With reference to FIG. 11, the refrigerator 100 which concerns on this Embodiment is demonstrated.
  • the refrigerator 100 includes a housing 103 including a main body 101 and an opening / closing door 102, a refrigerating chamber 110 formed by dividing the inside of the main body 101 by a partition wall 104, ice making The room 120, the freezer room 121, and the vegetable room 130 are provided. Further, the refrigerator 100 includes an ice making machine 170 having a water supply device 150 and an ice making unit 160.
  • An open / close door 102 is provided on the front face of the refrigerator compartment 110, the ice making compartment 120, the freezer compartment 121 and the vegetable compartment 130 so as to be opened and closed.
  • the refrigerator 100 includes a refrigeration cycle 140 and a cooling fan 143 that are configured by sequentially connecting a compressor 141, a condenser (not shown), a decompression device (not shown), and an evaporator 142 provided on the back side.
  • the refrigerant compressed to a high temperature and high pressure state flows from the compressor 141 into the condenser and is liquefied.
  • the liquefied refrigerant is depressurized through the depressurization device, becomes a low temperature, and flows into the evaporator 142.
  • the refrigerant that has flowed into the evaporator 142 is vaporized by removing heat from the surroundings, and then returns to the compressor 141.
  • the gas around the evaporator 142 that has been deprived of heat and cooled is blown into the cabinet by the cooling fan 143.
  • the refrigerator compartment 110, the ice making room 120, the freezer compartment 121, and the vegetable compartment 130 are cooled.
  • the ice making chamber 120 and the freezing chamber 121 are cooled such that the room temperature is below the freezing point.
  • the water storage tank 151 is mainly arranged in the refrigerator compartment 110, and the ice making unit 160 is arranged in the ice making room 120.
  • the water supply device 150 supplies water for ice making to the ice making unit 160.
  • FIG. 12 is a schematic view of an ice making machine mounted in the refrigerator shown in FIG.
  • FIG. 13 is a perspective view of the ice making machine shown in FIG. With reference to FIG. 12 and FIG. 13, ice maker 170 according to the present embodiment will be described.
  • the ice making machine 170 includes the water supply device 150 and the ice making unit 160 as described above.
  • Water supply device 150 includes water storage tank 151, electrolyzed water generation unit 1 according to Embodiment 1, water supply pump 155, water supply path 152, water stop valve 153, control unit 156 (see FIG. 14), and power supply device 157 (see FIG. 14). ).
  • the ice making unit 160 has an ice making tray 161.
  • the water storage tank 151 stores water for ice making, and introduces the water into the flowing water path 2 of the electrolyzed water generation unit 1.
  • the water storage tank 151 is detachably attached to the refrigerating chamber 110, and when replenishing water to the water storage tank 151, the user opens the door 102 and takes out the water storage tank 151 from the refrigerating chamber 110. Can do.
  • the water supply path 152 is connected to the flowing water path 2 and has a water supply port 154 at the end opposite to the flowing water path 2 side.
  • the water supply port 154 is located above the ice tray 161 in the ice making chamber. Further, a water stop valve 153 is disposed in the vicinity of the water supply port 154.
  • the water supply pump 155 is provided in the water supply path 152.
  • the water supply pump 155 sucks the water in the water storage tank 151 and sends the sucked water toward the ice making unit 160. Further, the amount of water per unit time passing through the flowing water path 2 can be made constant by the water supply pump 155, and the pH value of the generated acidic water or alkaline water can be stabilized.
  • the sucked water is introduced into the flowing water path 2 of the electrolyzed water generating unit 1.
  • the water introduced into the flowing water path 2 is electrolyzed when a DC voltage is applied between the ion adsorption electrode 4 and the metal electrode 5 to generate acidic water or alkaline water.
  • the generated acidic water or alkaline water is filled in the water supply path 152, and a necessary amount is supplied to the ice tray 161 from the water supply port 154 by opening and closing the water stop valve 153.
  • the supplied acidic water or alkaline water spreads throughout the ice tray 161 through a notch 162 formed in the ice tray 161.
  • the water supply apparatus since acidic water or alkaline water passes through the water supply path 152, bacteria and mold in the water supply path 152 can be sterilized by the acidic water. Moreover, the inside of the water supply path 152 can be washed with alkaline water.
  • the water supply path 152 can be easily sterilized or cleaned by providing the electrolyzed water generating unit 1 on the upstream side of the water supply path 152. Furthermore, since the complicated structure which can attach or detach the water supply path 152 becomes unnecessary, manufacturing cost can be reduced.
  • FIG. 14 is a block diagram showing a control configuration of the water supply apparatus shown in FIG. With reference to FIG. 14, the control structure of the water supply apparatus 150 is demonstrated.
  • the water supply apparatus 150 has a water level detection means 152a and a pH value detection means 152b.
  • the water level detection means 152 a and the pH value detection means 152 b are provided in the water supply path 152.
  • the water level detection means 152a and the pH value detection means 152b detect the water level and pH value in the water supply path 152.
  • the water level detection means 152a and the pH value detection means 152b are arranged in the vicinity of the water stop valve 153 and upstream of the water stop valve 153 in order to check whether the water supply path 152 is filled with water. It is preferable.
  • the power supply device 157 includes switching means 158.
  • the power supply device 157 corresponds to the power supply device 10F according to Modification 6 described above, and the switching unit 158 corresponds to the selection switches 13 and 14 included in the power supply device 10F.
  • the power supply device 157 is connected to the ion adsorption electrode 4 and the metal electrode 5 of the electrolyzed water generation unit 1, and applies a DC voltage to the ion adsorption electrode 4 and the metal electrode 5. Further, the power supply device 157 has a switching unit 158 and can switch between positive and negative voltages applied between the ion adsorption electrode 4 and the metal electrode 5.
  • the power supply of the refrigerator 100 outside the water supply device 150 may be used.
  • Detection information detected by the water level detection means 152 a and the pH value detection means 152 b is input to the control unit 156. Based on the detection information, the control unit 156 controls the stop valve 153, the water supply pump 155, and the switching unit 158 of the power supply device 157.
  • FIG. 15 is a flowchart showing the operation of the water supply apparatus shown in FIG. With reference to FIG. 15, operation
  • movement of the water supply apparatus 150 is demonstrated.
  • step (S1) the control unit 156 determines whether or not the water supply path 152 is filled with acidic water. Specifically, the water level and pH value are detected by the water level detection means 152a and the pH value detection means 152b. When it is determined that there is acidic water in the water supply path 152 (step S1; YES), the control unit 156 executes the step (S2). When it is determined that there is no acidic water in the water supply path 152 (step S1; No), the control unit executes the step (S4).
  • the control unit 156 opens the water stop valve 153 and discharges the acidic water in the water supply path 2 from the water supply port 154.
  • the discharged water is collected or discarded via a discharge path (not shown).
  • step (S3) the control unit 156 determines whether or not the acidic water is filled in the water supply path 152 by the above-described means.
  • step S3; YES the control unit 156 executes the step (S4).
  • step S3; NO the control unit 156 continues the discharge operation until there is no acidic water in the water supply path 152.
  • the control unit 156 operates the water supply pump 155 and generates alkaline water.
  • the control unit 156 controls the switching unit 158 of the power supply device 157 so that the metal electrode 5 side of the electrolyzed water generating unit 1 becomes a negative electrode (so that a direct current flows in the DR12 direction described above).
  • step (S5) the control unit 156 determines whether or not the production regulation state 1 has been reached by the above-described water level detection means 152a and pH value detection means 152b.
  • generation regulation state 1 refers to the state by which the alkaline water of about half of the capacity
  • FIG. 1 when the capacity of the water supply path 152 is smaller than half of the capacity of the ice tray 161, a part of the generated alkaline water is supplied to the ice tray 161.
  • the capacity of the water supply path 152 is more than half the capacity of the ice tray 161, all or part of the water supply path 152 is filled with the generated alkaline water.
  • step S6 When it is determined that the production regulation state 1 in which alkaline water of approximately half the capacity of the ice tray 161 has been produced is reached (step S5; YES), the control unit 156 executes the step (S6). . On the other hand, when it is determined that the production regulation state 1 has not been reached (step S5; NO), the control unit 156 continues the operation until the production regulation state 1 is reached, and produces alkaline water.
  • the predetermined amount of alkaline water can be generated by investigating the relationship between the flow rate flowing in the flowing water path 2 and the voltage application time in advance and setting these conditions as appropriate.
  • the control unit 156 generates acidic water.
  • the control unit 156 controls the switching unit 158 of the power supply device 157 so that the metal electrode 5 side of the electrolyzed water generation unit 1 becomes a positive electrode (so that a direct current flows in the DR11 direction described above).
  • the control unit 156 supplies the alkaline water generated in the step (S5) to the ice tray 161 while generating acidic water.
  • the alkaline water cleans the water supply path 152 while passing through the water supply path.
  • step (S7) the control unit 156 determines whether or not the production regulation state 2 has been reached by the above-described water level detection means 152a and pH value detection means 152b.
  • the production regulation state 2 is a state in which acidic water of approximately half of the capacity of the ice tray 161 is supplied to the ice tray 161 and a state in which the generated acidic water is filled in the water supply path 152. Point to.
  • the control unit 156 executes the step (S8).
  • step S7 when it is determined that the production regulation state 2 has not been reached (step S7; NO), the control unit 156 continues the operation until the production regulation state 2 is reached, and produces acidic water.
  • the predetermined amount of acidic water can be generated by investigating the relationship between the flow rate flowing in the flowing water path 2 and the voltage application time in advance and setting these conditions appropriately.
  • the control unit 156 stops the production of acidic water.
  • the control unit 156 stops the operation of the water supply pump 155 and closes the water stop valve 153. Thereby, operation
  • the water supply apparatus 150 As described above, in the water supply apparatus 150 according to the present embodiment, after the generated alkaline water passes through the water supply path 152, the generated acidic water passes through the water supply path 152 and the water supply apparatus 150. Is stopped, the water supply path 152 is filled. For this reason, in the water supply apparatus 150, while being able to wash
  • FIG. 16 is a schematic diagram of a drinking water supply apparatus according to Embodiment 3 of the present invention. With reference to FIG. 16, the drinking water supply apparatus which concerns on this Embodiment is demonstrated.
  • the drinking water supply device 200 includes a water supply tank 20, a heat pump 30, and a water supply device 40.
  • the water supply tank 20 has a mouth portion 21 through which water is led out, and is arranged at a predetermined position so that the mouth portion 21 faces the water supply device 40.
  • the water supply device 40 includes a water storage tank 41, the electrolyzed water generation unit 1 according to Embodiment 1, a water supply path 42, a water stop valve 43, a power supply device 47, a water supply pump 45, and a control unit 46. Moreover, the water storage tank 41, the electrolyzed water production
  • the water supply device 40 includes a water level detection means (not shown) and a pH value detection means (not shown) in the water supply path 42.
  • the water storage tank 41 stores the water led out from the water supply tank 20 and introduces the water into the flowing water path 2 of the electrolyzed water generation unit 1.
  • the water supply path 42 is connected to the flowing water path 2 and has a water supply port 44 at the end opposite to the flowing water path 2 side.
  • a water stop valve 43 is disposed in the vicinity of the water supply port 44.
  • a water supply pump 45 is provided in the water supply path 42. The water supply pump 45 sucks the water in the water storage tank 41 and sends the sucked water toward the water supply port 44. Further, the amount of water per unit time passing through the flowing water path 2 can be made constant by the water supply pump 45, and the pH value of the generated acidic water or alkaline water can be stabilized.
  • the power supply device 47 is connected to the ion adsorption electrode 4 and the metal electrode 5 of the electrolyzed water generation unit 1, and applies a DC voltage to the ion adsorption electrode 4 and the metal electrode 5.
  • the power supply device 47 includes a means 48 corresponding to the switching means according to the sixth modification, and can switch between positive and negative voltages applied between the ion adsorption electrode 4 and the metal electrode 5.
  • the water in the water supply tank 20 is led out to the water storage tank 41 until the end surface 22 of the mouth portion 21 coincides with the water surface in the water storage tank 41.
  • the water in the water storage tank 41 is consumed by being sucked by the water supply pump 45 and introduced into the flowing water path 2 of the electrolyzed water generation unit 1.
  • the introduced amount of water is replenished from the water supply tank 20, the water level in the water storage tank 41 is kept constant.
  • the water introduced into the flowing water path 2 is electrolyzed when a voltage is applied between the ion adsorption electrode 4 and the metal electrode 5 to generate acidic water or alkaline water.
  • the generated acidic water or alkaline water is filled in the water supply path 42, and the required amount is supplied to the external container 51 from the water supply port 44 by opening and closing the water stop valve 43.
  • the heat pump 30 is configured by sequentially connecting a compressor 31, a condenser 33, a pressure reducing device 34, and a heat absorption unit 35 (corresponding to the above-described evaporator 142) through a refrigerant pipe 32.
  • the condenser 33 is disposed on the rear outer shell wall of the drinking water supply apparatus 200, and heat is radiated from the rear outer shell wall.
  • the heat absorption part 35 has a spiral shape along the outer periphery of the water storage tank 41. By operating the heat pump 30, the water in the water storage tank 41 can be cooled.
  • a four-way valve (not shown) may be installed in the heat pump 30 so that hot water can be supplied instead of cold water as necessary.
  • Detection information detected by the water level detection means and the pH value detection means is input to the control unit 46.
  • the control unit 46 controls the switching unit 48 of the water stop valve 43, the water supply pump 45, and the power supply device 47 based on the detection information.
  • the water supply device 40 according to the third embodiment has substantially the same configuration as the water supply device 150 according to the second embodiment. Therefore, the water supply apparatus 40 according to the third embodiment can also operate based on the same flow as the water supply apparatus 150 according to the second embodiment. As a result, the water supply apparatus 40 according to the third embodiment can obtain substantially the same effect as the water supply apparatus 150 according to the second embodiment.
  • the water supply path 42 can be filled with acidic water.
  • generation or propagation of bacteria and mold in the water supply path 42 can be suppressed by the sterilizing effect of the acidic water.
  • alkaline water is produced
  • alkaline water may be generated in the step (S4) while discharging acidic water from the water supply paths 152 and.
  • the case where the acidic water filled in the water supply paths 152 and 42 is discharged and collected or discarded in the step (S2) has been described as an example.
  • all or part of the discharged acidic water may be supplied to the ice tray 161 and the container 51.
  • the step (S6) or step (S7) the amount of acidic water subtracted from about half of the capacity of 51 is supplied to the ice tray 161 and the container 51.
  • route at the time of a water supply apparatus stop As long as the insides of 152 and 42 are filled with acidic water, the final water in the ice tray 161 and the container 51 may be acidic or alkaline.
  • the amount of acidic water necessary to fill the water supply paths 152 and 42 may be generated just before the water supply device is stopped, and electrolytic water may not be generated in the water supply.
  • the operation time of the electrolyzed water generating unit can be greatly reduced, power consumption can be reduced, and electrode deterioration due to generation of scale on the ion-adsorbing electrode or corrosion of the metal electrode can be reduced.
  • an activated carbon or a hollow fiber filter may be provided near the water supply ports 154 and 44 to adsorb the salt. Good.
  • step (S1) and step (S3) are omitted. Specifically, first, in step (S2), the water stop valve 43 is opened and the acidic water in the water supply path 42 is discharged, while alkaline water is generated in step (S4).
  • Electrolytic water generation unit 2 flowing water path, 3 water, 4, 4A ion adsorption electrode, 5, 5A metal electrode, 6 ion exchange resin, 10, 10F power supply, 11 , 12 power supply, 13, 14 selection switch, 15 control section, 20 water supply tank, 21 mouth section, 22 end face, 30 heat pump, 31 compressor, 32 refrigerant pipe, 33 condenser, 34 decompression device, 35 heat absorption section, 40 Water supply device, 41 water storage tank, 42 water supply path, 43 water stop valve, 44 water supply port, 46 control unit, 100 cooler, 101 main body, 102 main door, 103 enclosure, 104 partition wall, 110 cold storage room, 120 ice making room, 121 freezer room, 130 vegetable room, 140 refrigeration cycle, 141 compressor, 142 evaporator, 143 cold Fan, 150 Water supply device, 151 Water storage tank, 152 Water supply path, 152a Water level detection means, 152b Value detection means, 153 Water stop valve, 154 Water

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

Selon l'invention, une unité de production d'eau électrolysée (1) comprend un passage d'écoulement d'eau (2) dans lequel de l'eau s'écoule, et une électrode d'adsorption d'ions (4) et une électrode en métal (5), qui sont toutes deux situées à l'intérieur du passage d'écoulement d'eau (2). L'électrode d'adsorption d'ions (4) et l'électrode en métal (5) sont situées de façon à se faire face dans une direction en intersection avec la direction de l'écoulement d'eau. De l'eau acide et de l'eau alcaline sont produites en appliquant une tension continue entre l'électrode d'adsorption d'ions (4) et l'électrode en métal (5).
PCT/JP2014/052630 2013-02-08 2014-02-05 Unité de production d'eau électrolysée et dispositif d'alimentation en eau la comprenant Ceased WO2014123138A1 (fr)

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JP2013-023056 2013-02-08
JP2013023056A JP2014151271A (ja) 2013-02-08 2013-02-08 電解水生成ユニットおよびこれを備えた給水装置

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173883U (fr) * 1981-04-28 1982-11-02
JPH0691260A (ja) * 1992-09-16 1994-04-05 Matsushita Electric Ind Co Ltd 蒸気発生装置用の軟水器
JPH10174889A (ja) * 1996-12-18 1998-06-30 Toto Ltd 陽イオン交換樹脂の再生装置
JP2003053339A (ja) * 2001-08-13 2003-02-25 Sanden Corp 再生機能付き軟水器及びその再生方法
JP2005046810A (ja) * 2003-07-31 2005-02-24 Kurita Water Ind Ltd スケール防止装置
JP2007017087A (ja) * 2005-07-08 2007-01-25 Air Water Inc 冷蔵庫
WO2009119572A1 (fr) * 2008-03-25 2009-10-01 有限会社ターナープロセス Dispositif portable de régulation de dureté pour réguler la dureté d'une eau potable
WO2012039127A1 (fr) * 2010-09-21 2012-03-29 パナソニック株式会社 Échangeur d'ions poreux, dispositif de traitement d'eau, dispositif d'alimentation en eau chaude, et procédé de fabrication d'échangeur d'ions poreux
JP2012228669A (ja) * 2011-04-27 2012-11-22 Panasonic Corp 軟水化装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173883U (fr) * 1981-04-28 1982-11-02
JPH0691260A (ja) * 1992-09-16 1994-04-05 Matsushita Electric Ind Co Ltd 蒸気発生装置用の軟水器
JPH10174889A (ja) * 1996-12-18 1998-06-30 Toto Ltd 陽イオン交換樹脂の再生装置
JP2003053339A (ja) * 2001-08-13 2003-02-25 Sanden Corp 再生機能付き軟水器及びその再生方法
JP2005046810A (ja) * 2003-07-31 2005-02-24 Kurita Water Ind Ltd スケール防止装置
JP2007017087A (ja) * 2005-07-08 2007-01-25 Air Water Inc 冷蔵庫
WO2009119572A1 (fr) * 2008-03-25 2009-10-01 有限会社ターナープロセス Dispositif portable de régulation de dureté pour réguler la dureté d'une eau potable
WO2012039127A1 (fr) * 2010-09-21 2012-03-29 パナソニック株式会社 Échangeur d'ions poreux, dispositif de traitement d'eau, dispositif d'alimentation en eau chaude, et procédé de fabrication d'échangeur d'ions poreux
JP2012228669A (ja) * 2011-04-27 2012-11-22 Panasonic Corp 軟水化装置

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