WO2012129735A1 - Dispositif d'électrolyse et machine à laver sans détergent associée - Google Patents

Dispositif d'électrolyse et machine à laver sans détergent associée Download PDF

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Publication number
WO2012129735A1
WO2012129735A1 PCT/CN2011/000567 CN2011000567W WO2012129735A1 WO 2012129735 A1 WO2012129735 A1 WO 2012129735A1 CN 2011000567 W CN2011000567 W CN 2011000567W WO 2012129735 A1 WO2012129735 A1 WO 2012129735A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
vessel
exchange resin
acidic
water
Prior art date
Application number
PCT/CN2011/000567
Other languages
English (en)
Inventor
Zijun Xia
Ronald Scott Tarr
Ramasamy Thiyagarajan
Rihua Xiong
Chengqian Zhang
Cai Wei
Hai Yang
Original Assignee
General Electric Company (A New York Corporation)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Company (A New York Corporation) filed Critical General Electric Company (A New York Corporation)
Priority to PCT/CN2011/000567 priority Critical patent/WO2012129735A1/fr
Priority to US14/005,293 priority patent/US20140014145A1/en
Publication of WO2012129735A1 publication Critical patent/WO2012129735A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/003—Washing machines, apparatus, or methods not otherwise provided for using electrochemical cells
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4229—Water softening arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
    • A47L15/4238—Arrangements to sterilize or disinfect dishes or washing liquids by using electrolytic cells
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • 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
    • C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
    • 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
    • C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
    • 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
    • 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 subject matter disclosed herein relates generally electrolysis devices useful for cleaning and to related washing machines that can operate without use of detergent.
  • Most clothes washers and dishwashers use detergents to clean the desired objects (clothing or cookware).
  • Various formulations of detergents have been introduced that provide excellent cleaning in either type of machine.
  • clothes washers often use a surfactant such as a linear alkylbenzenesulfonates, usually along with water softeners, bleaches, enzymes, etc.
  • Dishwashers also use surfactants, water softeners, bleaches, enzymes, and other ingredients.
  • an electrolysis device for producing alkaline water from water including an electrolysis vessel, a positive electrode, a negative electrode, a bipolar membrane element, and at least one cation exchangeable membrane within the electrolysis vessel.
  • the bipolar membrane element has a cation exchangeable side and an anion exchangeable side, the cation exchangeable side being closer to the negative electrode than the anion exchangeable side.
  • the at least one cation exchangeable membrane is arranged between the anion exchangeable side of the bipolar membrane element and the positive electrode, so as to define an alkalic chamber between the bipolar membrane element and the cation exchangeable membrane.
  • An ionic exchange resin is associated with the vessel, whereby flow of the water though the vessel and the ionic exchange resin produces alkaline water in the alkalic chamber.
  • a detergentless washing machine includes a washing compartment for washing objects and an electrolysis vessel for supplying alkaline water to the washing compartment.
  • the electrolysis vessel includes a positive electrode, a negative electrode, a bipolar membrane element, and at least one cation exchangeable membrane within the electrolysis vessel.
  • the bipolar membrane element has a cation exchangeable side and an anion exchangeable side, the cation exchangeable side being closer to the negative electrode than the anion exchangeable side.
  • the at least one cation exchangeable membrane is arranged between the anion exchangeable side of the bipolar membrane element and the positive electrode, so as to define an alkalic chamber between the bipolar membrane element and the cation exchangeable membrane.
  • Figure 1 provides a schematic view of a washer having an electrolysis device according to certain aspects of the disclosure
  • Figure 2 provides a schematic view of one possible electrolysis device useful in the washer of Fig. 1 ;
  • Figure 3 provides a schematic view of another possible electrolysis device useful in the washer of Fig. 1 ;
  • Figure 4 provides a schematic view of another possible electrolysis device useful in the washer of Fig. 1 ;
  • Figure 5 provides a schematic view of another possible electrolysis device useful in the washer of Fig. 1.
  • FIG. 1 illustrates an exemplary washing machine 10.
  • the exemplary washing machine 10 may include for example a cabinet 12, a hinged door 14, a washing compartment 16 in which washing of objects occurs, a water supply 18, and a water outlet 20.
  • water supply 18 may include separate hot and cold water supplies (not shown).
  • Water supply 18 and outlet 20 are connected to washing compartment 60 in conventional ways.
  • Washing compartment 16 could be fixed (as in a dishwasher or the like) or could include a movable/rotatable drum within a larger container (as in a clothes washer or the like). Washing compartment 16 could include various conventional items within it such as sprayers, racks, tumbling structures, vents and drains, etc., as desired.
  • Washing machine 10 may include a user interface 22 including one or more input devices such as buttons, and one or more output devices such as displays, LED's, etc.
  • a conventional controller 24, for example including a memory and processor, within washing machine 10 may receive and send signals from user interface 22 and other components of the device (not shown for clarity as unnecessary to fully disclose and explain the present inventive concepts), such as pumps, motors, valves, containers, sensors, power sources, rectifiers, etc., as are known to perform desired washing activities and cycles.
  • washing machine 10 could comprise a clothes washer, a dish washer, a medical device sterilizer, or any other water-based machine for washing items. Therefore, conventional components of such devices as mentioned above could be adapted to employ the detergentless cleaning devices disclosed herein.
  • FIG. 1 further schematically shows an electrolysis device 28 located within washing machine 10 and including an electrolysis cell 30.
  • a container 32 holds the alkaline product of electrolysis device 30.
  • Conduits 34 and 36 connect container 32 to electrolysis device 30, and conduit 38 connects container 32 to washing
  • a cell unit 50 includes a positive electrode 52 and a negative electrode 54.
  • the electrodes may be highly porous metals, such as titanium mesh for example.
  • the cell unit includes a vessel 56 and a number of cells 58, 60, 62, and 64.
  • the cells are divided by ion exchange membranes 66,68,and 70.
  • Membrane 66 is an anion exchange membrane
  • membrane 70 is a cation exchange membrane
  • membrane 68 is a bipolar exchange membrane.
  • Membrane 68 has an anion exchange side 72 and a cation exchange side 74.
  • Inlets 76,78,80 and 82 and outlets 84,86,88, and 90 are provided for the cells 58-64, respectively.
  • Each cell has within it a mixture of both cation and anion exchange resins 92 which may be any of a number of commercially available resins.
  • the resins may be cross-linked divinylbenzene, if desired.
  • the cation exchange resin may have as a functional group a sulfonic group (-S03H or -S03Na), and the anion exchange resin may have as a the functional group a quaternary amine group.
  • Acid container 94 and an alkaline container 96 are provided as well.
  • Acid container 94 has a first outlet 98 connected to cell inlets 78 and 82, and a second outlet 100 that is connected to a desired end use location, such as the interior of a washer 10.
  • An inlet 102 is connected to cell outlets 86 and 90. Acidic liquid can thus cycle through cells 60 and 64 (acidic chambers) and container 94 via a pump (not shown).
  • Alkaline container 96 has a first outlet 104 is similarly connected to cell inlets 76 and 80 and a second outlet 106 connected to a desired end use location.
  • Inlet 108 is connected to cell outlets 84 and 88.
  • Alkaline liquid can thus cycle through cells 58 and 62 (alkalic chambers) in a similar fashion.
  • Cells 58-64 should be large enough to generate sufficient alkaline water for cleaning the desired objects in a reasonable amount of time. For example, if Used in a dishwasher, typical wash cycles vary from 30-75 minutes or so, depending on the device and the chosen cycle. Therefore, the size, flow rate, current, etc. can be chosen to obtain an amount of alkaline water needed for a given cycle. To generate 1.2 gallons of alkaline water of a pH of over 11 , for example, might require cells with membranes as large as 10 x 20 cm, that run for an amount of time such as 20-25 minutes or so. Such alkaline water can be used in a dishwasher instead of detergent to clean cookware during a typical cleaning cycle. The acidic water generated can be used during rinsing to sanitize or sterilize as well.
  • the presence of the ion exchange resins within the cells allows the cells to operate while reducing CaC0 3 scaling and other such deposits on the ion exchange membranes while still allowing the chemical and electrical reactions to occur. It is believed that the regeneration of H and OH ions caused by the ion exchange resins beneficially prevents such scaling deposits. Further, by placing the ion exchange resins in the cells, the resins do no wear out, or will do so much more slowly so that they need not be changed out during the life of the product.
  • Fig. 3 shows a variation of cell unit 50 of Fig. 2.
  • Cell unit 150 of Fig. 3 differs from that of Fig. 2 in that cells 158-164 do not include mixtures of ion exchange resins. Instead, anion exchange resins 191 are located in cells 158 and 162, and cation exchange resins 193 are located in cells 160 and 164. Resins may be of the types described above. Splitting the resins on a per cell basis may provide better performance in certain situation in terms of higher acid and alkaline generation at a given set of parameters.
  • Fig. 4 shows another modified version in which mixed resins may be employed.
  • cell unit 250 of Fig. 4 includes three separate cells on each side of bipolar membrane 268 and formed by additional exchange membranes.
  • cells 258 and 262 are connected to alkaline container 296, as before.
  • Cells 260 and 264 are connected to acidic container 294 in similar fashion.
  • Membranes 265 and 270 are cation exchange membranes and membranes 266 and 271 are anion exchange membranes.
  • Cells 259 and 263 are connected to a water cycle.
  • Ion exchange resins 292 are mixed as illustrated, but could be separated out according to anion and cation as above, if desired.
  • cell 250 provides a further separated system in which feed water can be provided as needed via a separate inlet.
  • the feed water need not be circulated as shown, but may simply be provided to the washing device or drained after cycling though cell 20.
  • Cell 250 may thus provide another arrangement for created alkaline water and acidic water for cleaning, while providing a ready source of water to the device as substances are used during cleaning.
  • Fig. 5 shows an alternate device in which cell 350 is a modified version of cells 50 and 150 above. In cell 350, however, separate containers 395 and 397 are provided for the anion exchange resin 391 and the cation exchange resin 393, respectively. Placing the exchange resins exterior to cell 350 does provide a number of the regenerative and anti-scaling benefits discussed above.
  • the resins can be replaced in containers 395 and 397 without having to replace the entire cell vessel 356. In some applications, this may be sufficient to provide the benefits mentioned above while still allowing for
  • the resins can be periodically changed on a regular schedule regardless of any fouling, degradation, etc., if desired to ensure peak performance of cell 350.
  • a detergentless wash can be achieved using alkalic and/or acidic water.
  • sufficient alkalic water can be generated in a typical cycle amount of time, using minimal electric power as compared to the entire power demand of the machine, to suitably clean cookware using approximately 1.2 gallons of alkalic water at approximately 1 1 pH or more.
  • detergent need not be employed, providing cost and environmental benefits.
  • the electrolytic device herein may be used with various applications, including clothes and dish washing devices. However, other washing devices and other devices requiring alkaline and/or acidic water may be practiced using the present teachings.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

La présente invention se rapporte à un dispositif d'électrolyse destiné à produire de l'eau alcaline à partir de l'eau. Ledit dispositif d'électrolyse comprend une cuve d'électrolyse, une électrode positive, une électrode négative, un élément à membrane bipolaire et au moins une membrane échangeuse de cations dans la cuve d'électrolyse. L'élément à membrane bipolaire présente un côté échangeur de cations et un côté échangeur d'anions, le côté échangeur de cations étant plus près de l'électrode négative que le côté échangeur d'anions. La ou les membranes échangeuses de cations sont agencées entre le côté échangeur d'anions de l'élément à membrane bipolaire et l'électrode positive, de sorte à définir une chambre alcaline entre l'élément à membrane bipolaire et la membrane échangeuse de cations. Une résine échangeuse d'ions est associée à la cuve de sorte que le flux d'eau à travers la cuve et la résine échangeuse d'ions produise de l'eau alcaline dans la chambre alcaline. Diverses options et modifications sont possibles. La présente invention se rapporte également à une machine à laver associée, telle qu'un lave-vaisselle.
PCT/CN2011/000567 2011-04-01 2011-04-01 Dispositif d'électrolyse et machine à laver sans détergent associée WO2012129735A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2011/000567 WO2012129735A1 (fr) 2011-04-01 2011-04-01 Dispositif d'électrolyse et machine à laver sans détergent associée
US14/005,293 US20140014145A1 (en) 2011-04-01 2011-04-01 Electrolysis device and related detergentless washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/000567 WO2012129735A1 (fr) 2011-04-01 2011-04-01 Dispositif d'électrolyse et machine à laver sans détergent associée

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US (1) US20140014145A1 (fr)
WO (1) WO2012129735A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110921796A (zh) * 2019-10-30 2020-03-27 同济大学 电化学回收污水氮磷同步制氢氧系统和方法
CN111747554A (zh) * 2020-08-04 2020-10-09 广州市景畅生物科技有限公司 一种无洗衣粉循环用水智能化洗涤系统
EP4082974A1 (fr) 2021-04-30 2022-11-02 MEIKO Maschinenbau GmbH & Co. KG Dispositif de nettoyage et procédé de nettoyage d'articles
EP4082652A1 (fr) 2021-04-30 2022-11-02 MEIKO Maschinenbau GmbH & Co. KG Dispositif d'électrodialyse

Families Citing this family (4)

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DE102014207250A1 (de) * 2014-04-15 2015-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Entsalzung wässriger Lösungen mittels Elektrodialyse
WO2017200772A1 (fr) 2016-05-17 2017-11-23 Cryovac, Inc. Solutions alcaline et de chlor produites au moyen d'activation électrochimique
EP3574131B1 (fr) 2017-01-26 2021-04-28 Diversey, Inc. Neutralisation dans des systèmes d'activation électro-chimiques
CN114468906B (zh) * 2020-10-23 2023-10-27 珠海格力电器股份有限公司 一种洗碗机、洗碗机的控制方法、装置及存储介质

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CN2201395Y (zh) * 1994-07-30 1995-06-21 沈阳东宇高纯稀土材料公司 离子水生成器
CN201605329U (zh) * 2007-03-13 2010-10-13 西门子水处理技术公司 用于生产酸和碱的电化学设备
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CN201793755U (zh) * 2010-04-27 2011-04-13 张晨光 一种用于色谱技术的双极膜酸碱液体发生装置
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110921796A (zh) * 2019-10-30 2020-03-27 同济大学 电化学回收污水氮磷同步制氢氧系统和方法
CN111747554A (zh) * 2020-08-04 2020-10-09 广州市景畅生物科技有限公司 一种无洗衣粉循环用水智能化洗涤系统
EP4082974A1 (fr) 2021-04-30 2022-11-02 MEIKO Maschinenbau GmbH & Co. KG Dispositif de nettoyage et procédé de nettoyage d'articles
EP4082652A1 (fr) 2021-04-30 2022-11-02 MEIKO Maschinenbau GmbH & Co. KG Dispositif d'électrodialyse

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