WO2023248995A1 - 洗浄方法及び洗浄装置 - Google Patents

洗浄方法及び洗浄装置 Download PDF

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Publication number
WO2023248995A1
WO2023248995A1 PCT/JP2023/022674 JP2023022674W WO2023248995A1 WO 2023248995 A1 WO2023248995 A1 WO 2023248995A1 JP 2023022674 W JP2023022674 W JP 2023022674W WO 2023248995 A1 WO2023248995 A1 WO 2023248995A1
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WO
WIPO (PCT)
Prior art keywords
humidity control
cleaning
humidity
control material
cleaning device
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/JP2023/022674
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English (en)
French (fr)
Japanese (ja)
Inventor
哲也 井出
豪 鎌田
奨 越智
恭子 松浦
洋香 濱田
勇佑 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
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Sharp Corp
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Publication date
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Priority to CN202380047196.7A priority Critical patent/CN119365257A/zh
Priority to JP2024529016A priority patent/JPWO2023248995A1/ja
Publication of WO2023248995A1 publication Critical patent/WO2023248995A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the present disclosure relates to a cleaning method and a cleaning device for cleaning particle dirt attached to a humidity control material.
  • Patent Document 1 discloses a method for producing a silver-based antibacterial agent, and discloses washing with aqueous ammonia to remove nitrate ions and silver nitrate remaining on the surface.
  • the present disclosure provides a cleaning method and a cleaning device that are capable of cleaning particle dirt attached to a humidity control material.
  • a cleaning method for cleaning particle stains attached to a humidity control material the method using a second humidity control liquid having a lower equilibrium humidity than a first humidity control liquid included in the humidity control material.
  • the method is characterized by having a cleaning step of cleaning with water.
  • FIG. 1 is a process diagram schematically showing a cleaning method according to the present disclosure.
  • FIG. 2 is a cross-sectional view schematically showing the humidity control material.
  • FIG. 3 is a diagram schematically showing a humidity control material.
  • FIG. 4 is a cross-sectional view schematically showing the humidity control material.
  • FIG. 5 is a cross-sectional view schematically showing the humidity control material.
  • FIG. 6 is a diagram showing equilibrium humidity with respect to temperature and absolute humidity.
  • FIG. 7 is a diagram showing the humidity when heat and water vapor from the outside air are absorbed by the total heat exchanger.
  • FIG. 8 is a diagram showing the humidity when heat and water vapor from the outside air are absorbed by the total heat exchanger.
  • FIG. 9 is a schematic diagram of a cleaning device according to the present disclosure.
  • FIG. 1 is a process diagram schematically showing a cleaning method according to the present disclosure.
  • the cleaning method according to the present disclosure is a method for cleaning particle dirt attached to a humidity control material, and includes a cleaning step S10.
  • the humidity control material Since the cleaning method according to the present disclosure cleans dirt from particles attached to the humidity control material, the humidity control material will be explained first.
  • Humidity control materials regulate the amount of moisture contained in the air. Furthermore, the humidity control material has the property of absorbing moisture when the surrounding humidity is relatively high with respect to the equilibrium humidity, and releasing moisture when the surrounding area becomes dry. Unlike desiccant agents such as A-type silica gel and zeolite, they repeatedly absorb and release moisture, so in principle, as long as the balance between the two is maintained within the range of not exceeding the maximum amount of water vapor that can be retained, Effective semi-permanently. The structure of the humidity control material will be explained in detail below.
  • FIG. 2 is a cross-sectional view schematically showing the humidity control material 1.
  • the cleaning method according to the present disclosure cleans particle stains X attached to the humidity control material 1 as shown in FIG.
  • the humidity control material 1 includes a water absorbing material 2 containing a resin and/or a clay mineral, and a humidity control liquid 3, which is a humidity control component that absorbs or releases moisture and has a humidity control function.
  • the moisture control liquid 3 is impregnated into the water absorbing material 2.
  • the humidity control material 1 absorbs and absorbs moisture contained in the air at that location, or releases moisture contained in the humidity control material 1 into the air for humidification.
  • the humidity control liquid 3 may be impregnated not only in the water absorbent material 2 but also in the carrier 5 that supports the humidity control material 1 (water absorbent material 2).
  • the carrier 5 will be described later.
  • the shape of the humidity control material 1 may be powder, particulate, or block, or it may be used by supporting the resin on a ventilation base material so that it can be brought into efficient contact with air.
  • the water absorbing material 2 has a function of holding the humidity control liquid 3. Since the water-absorbing material 2 holds the humidity control liquid 3, it is possible to realize the humidity control material 1 having a high ratio of surface area to volume. Therefore, the rate of moisture absorption or release can be increased. Therefore, the humidity control material 1 can have a high humidity control speed.
  • the water-absorbing material 2 is used for the first humidity control liquid included in the humidity control material 1 and the second humidity control liquid that is a cleaning liquid for cleaning the humidity control material 1 in the cleaning method according to the present disclosure.
  • the water-absorbing material 2 is preferably a water-absorbing resin (particles, powder). In this way, the water-absorbing material 2 can be suitably impregnated with the humidity control liquid 3, and the humidity control effect can be further enhanced.
  • the water-absorbing resin material ionic resins and nonionic resins are preferred.
  • the ionic resin include alkali metal salts of polyacrylic acid, starch-acrylate graft polymers, and the like.
  • alkali metal salts of polyacrylic acid include sodium polyacrylate.
  • the nonionic resin include vinyl acetate copolymer, maleic anhydride copolymer, polyvinyl alcohol, polyalkylene oxide, and the like.
  • the humidity conditioning liquid 3 preferably contains at least one selected from the group consisting of a deliquescent substance that absorbs moisture in the air and deliquesces, and a polyhydric alcohol. In this way, the humidity control effect can be further enhanced.
  • polyhydric alcohols include at least one selected from the group consisting of glycerin, propanediol, butanediol, pentanediol, trimethylolpropane, butanetriol, ethylene glycol, diethylene glycol, triethylene glycol, and lactic acid.
  • polyhydric alcohols having three or more hydroxyl groups such as glycerin are more preferably used.
  • the polyhydric alcohol may constitute a dimer or a polymer.
  • Deliquescent substances are classified into salts and water-soluble organic substances.
  • Specific examples of salts include sodium formate, potassium formate, ammonium formate, sodium acetate, potassium acetate, lithium acetate, ammonium acetate, sodium lactate, potassium lactate, sodium benzoate, potassium benzoate, sodium propionate, propionic acid.
  • Potassium calcium chloride, lithium chloride, magnesium chloride, calcium chloride, lithium chloride, potassium chloride, sodium chloride, zinc chloride, aluminum chloride, lithium bromide, calcium bromide, potassium bromide, sodium hydroxide, sodium pyrrolidone carboxylate
  • Examples include potassium carbonate, calcium citrate, sodium citrate, potassium citrate, lithium citrate, and the like.
  • salts only one type may be included, or two or more types may be included.
  • preferred are sodium formate, potassium formate, sodium acetate, potassium acetate, and potassium carbonate, which absorb and desorb a large amount of moisture per weight.
  • water-soluble organic substances include sugars such as sucrose, pullulan, glucose, xylol, fructose, mannitol, and sorbitol, carboxylic acids such as citric acid, and amides such as urea.
  • the amount of humidity conditioning liquid 3 relative to the water-absorbing material 2 is preferably 1 part by weight or more and 1000 parts by weight or less based on 100 parts by weight of the water-absorbing material. In this way, the amounts of the water absorbing material 2 and the humidity control liquid 3 will be appropriate, and the humidity control function can be further enhanced. Moreover, it is preferable that the water-absorbing material 2 is in the form of powder or particles.
  • FIG. 3 is a diagram schematically showing the humidity control material. As shown in FIG. 3, the humidity control material 1 may be supported on a carrier 5.
  • FIG. 4 is a diagram schematically showing another form of the humidity control material 1, and is a cross-sectional view of a sheet in which a binder (carrier 5) is disposed between water absorbers 4 and a humidity control material 1 is dispersed in the binder.
  • the humidity control material 1 water absorbing material 2
  • the water absorbent body 4 may include the water absorbing material 2.
  • a humidity control liquid 3 may be contained between the water-absorbing material 2 and the water-absorbing material 2. In this way, a humidity control material 1 having a high ratio of surface area to volume can be realized, and the rate of moisture absorption or release can be increased.
  • the carrier 5 can also be impregnated with water.
  • the carrier 5 supporting the humidity control material 1 is selected optimally depending on the application. If heat transfer is involved, such as in a total heat exchanger, it is preferable to use a metal material such as aluminum.If you want to increase the moisture absorption and release capacity for humidity control, use humidity control liquid 3. Materials that retain moisture are preferred. In the latter case, it is made of, for example, a porous material, a nonwoven fabric, a woven fabric, or other hydrophilic fiber. In particular, nonwoven fabrics with high water vapor permeability are preferred. Moreover, the carrier 5 can also contain a binder.
  • the shape of the carrier 5 is a sheet, and it may be formed into various shapes such as a flat plate, pleated shape, or honeycomb shape.
  • a sheet material is first formed into a corrugated (flute) shape using a corrugator, and then fixed with an adhesive and integrated with a flat liner made of the same or different material as the sheet. be done.
  • the carrier 5 may have flexibility.
  • the carrier 5 may be deformable. In other words, it may be possible to hold it in any shape (bent shape, curved shape, etc.).
  • FIG. 5 is a cross-sectional view schematically showing the humidity control material 1.
  • the humidity control material 1 may be supported on a carrier 5 and held on the water absorbent body 4, and may be provided in a total heat exchanger or an element (holding section 50), which will be described later. In this way, the amount of contact with air is increased, and the humidity control function can be improved.
  • the water absorbent body 4 may include the water absorbent material 2. Further, the water absorbent body 4 may be in the form of powder, particles, or sheet.
  • the humidity control material 1 may also be made of B-type silica gel, polymer sorbent, or the like.
  • humidity control means adjusting the relative humidity so that it approaches a predetermined humidity range. Specifically, for example, assuming that 50% RH is a predetermined relative humidity, when the relative humidity is higher than 50% RH, the humidity control material 1 absorbs moisture (moisture absorption), and when the relative humidity is higher than 50% RH. When the humidity is low, the humidity control material 1 releases moisture (releases moisture).
  • the predetermined relative humidity range correlates with the material and moisture content of the humidity control material 1. Specifically, for example, the predetermined relative humidity range correlates with the water content in the humidity control liquid.
  • the cleaning method according to the present disclosure will be explained in detail.
  • particle dirt X adhering to the humidity control material 1 is cleaned.
  • the dirt X is dust, sand, sand dust, dust, salt, and the like.
  • cleaning is performed using a humidity conditioning liquid whose equilibrium humidity is lower than that contained in the above-mentioned humidity conditioning material.
  • the humidity control liquid contained in the humidity control material will be referred to as a first humidity control liquid
  • the humidity control liquid whose equilibrium humidity is lower than that of the first humidity control liquid will be referred to as a second humidity control liquid.
  • cleaning is performed using a second humidity control liquid whose equilibrium humidity is lower than that of the first humidity control liquid contained in the humidity control material.
  • the above-mentioned humidity control liquid is used as the first humidity control liquid and the second humidity control liquid.
  • the first humidity control liquid has a higher equilibrium humidity than the second humidity control liquid.
  • the second humidity control liquid is a humidity control liquid whose equilibrium humidity is lower than that of the first humidity control liquid.
  • the humidity control function of the humidity control material can be restored to its original state.
  • heating is performed to restore the humidity control function of the humidity control material, but when the humidity control material is heated, the equilibrium humidity of the humidity control material does not drop suddenly but gradually. . In other words, it takes time to restore the humidity control function of the humidity control material to its original state by heating or the like. Therefore, by going through the cleaning step S10, the humidity control function of the humidity control material can be restored to its original state without adding a process such as heating and taking time.
  • the humidity control material is in the form of a gel.
  • the humidity conditioning liquid (first humidity conditioning liquid) of the humidity conditioning material is more strongly retained, so that it can be further prevented from being eluted into the cleaning water (second humidity conditioning liquid).
  • FIG. 6 is a diagram showing equilibrium humidity with respect to temperature and absolute humidity.
  • the absolute humidity differs depending on the temperature, for example, the equilibrium humidity differs in summer and winter, and depending on the conditions, humidity control components may be eluted into the washing water. Therefore, the equilibrium humidity of the second humidity control liquid is preferably 50% RH or less. In this way, it is possible to further suppress the humidity control component from being eluted into the washing water, and to more reliably wash away particle stains adhering to the humidity control material.
  • the cleaning step S10 it is preferable to use ultrasonic waves at a frequency that dirt particles can follow and to clean the humidity conditioning material using the filtered second humidity conditioning liquid.
  • ultrasonic waves with a frequency that can be tracked by dirt particles, dirt can be more reliably cleaned, and if the humidity control material is washed with the filtered second humidity control liquid, dirt will not be reattached. It is possible to wash with a cleaning solution that causes less dirt without causing any stains, and it is possible to wash efficiently.
  • the humidity control material is in the form of a gel
  • the cleaning method according to the present disclosure preferably further includes a removal step S20.
  • the removal step S20 removes the second humidity control liquid remaining in the holding part 50 that holds the humidity control material after the cleaning step S10.
  • the humidity control material 1 is supported on a carrier 5 as shown in FIGS. 3, 4, and 5, or is further supported by an element or a total heat exchanger to be described later. Therefore, in the removal step S20, the second humidity control liquid remaining thereon is removed by blowing with air or applying vibration.
  • the operating air volume is preferably at a level that does not cause carryover.
  • the cleaning method according to the present disclosure preferably further includes a recovery step S30.
  • a recovery step S30 surplus water in the humidity control material is collected after cleaning the humidity control material. Surplus water is moisture absorbed (moisture absorbed) by the humidity control material.
  • the cleaning method according to the present disclosure preferably further includes a regeneration step S40.
  • the regeneration step S40 regenerates the humidity control material.
  • the regeneration step S40 is performed by lowering the relative humidity of the surrounding air below the equilibrium humidity of the humidity control material. For example, this is carried out by ventilating dry air or heated air through a humidity control material, an element, or a total heat exchanger to be described later, or by reducing the pressure.
  • cleaning step S10, the recovery step S30, and the regeneration step S40 are shown as separate steps in FIG. 1, these steps may be performed simultaneously.
  • the humidity control material is retained by a total heat exchanger.
  • a total heat exchanger is an energy-saving device that exchanges and recovers all the heat of air conditioning energy lost through ventilation.
  • silica gel and zeolite have been used as substances held in the total heat exchanger, but in the cleaning method of the present disclosure, a humidity control material is used.
  • FIG. 7 is a diagram showing the humidity when heat and water vapor from the outside air are absorbed by the total heat exchanger.
  • FIG. 8 is a diagram showing the humidity when heat and water vapor from the outside air are absorbed by the total heat exchanger. Both figures are examples from summer. As shown in Figure 7, when air is sent indoors from outdoors, the humidity control material held in the total heat exchanger absorbs the heat and water vapor from the outside air, and sends air indoors that is lower in temperature and humidity than outdoors. be able to.
  • the total heat exchanger also requires heat capacity control, it is preferable to consider the influence of cleaning when a latent heat storage material (heat storage material) is also provided. If the latent heat storage material is a capsule or a water-insoluble gel, there is no effect because the latent heat storage material is covered with a capsule. On the other hand, if the latent heat storage material is a water-soluble gel (thermal storage gel), it is necessary to consider the diffusion of the humidity control component, and in the cleaning step S10, it is necessary to wash at a temperature below the temperature at which the latent heat storage material solidifies.
  • a latent heat storage material heat storage material
  • the cleaning device 100 according to the present disclosure is a device that cleans particle dirt attached to a humidity control material. As shown in FIG. 9, a cleaning device 100 according to the present disclosure includes a storage section 9 and a cleaning section 10.
  • the storage section 9 stores a second humidity control liquid that has a lower equilibrium humidity than the first humidity control liquid contained in the humidity control material.
  • the first humidity control liquid and the second humidity control liquid are as described above.
  • the storage section 9 may be a tank or the like, but is not limited to these as long as it can store the second humidity control liquid.
  • the cleaning device 100 further includes a collection unit 30 that collects surplus water from the humidity control material after cleaning the humidity control material.
  • the collection unit 30 may be a container, a tank, or the like that can store surplus water, but is not limited to these as long as it can store surplus water.
  • the recovery step S30 described above is performed.
  • the cleaning device 100 further includes a regeneration unit 40 that regenerates the humidity control material.
  • the regeneration unit 40 include a compressor for ventilating dry air or heated air, a blower, a heater, a pressure reducer for reducing the pressure, etc., but if the relative humidity of the surrounding air can be lowered from the equilibrium humidity of the humidity control material, any of these may be used. but not limited to.
  • the reproducing unit 40 the above-described reproducing step S40 is performed.
  • the cleaning device 100 further includes a removing section 20 that removes the second humidity conditioning liquid remaining in the holding section 50 that holds the humidity conditioning material when cleaning the humidity conditioning material.
  • the removal unit 20 may be an air blower, but is not limited to these as long as it can remove the second humidity control liquid remaining in the holding unit 50 that holds the humidity control material.
  • Examples of the holding section 50 include a total heat exchanger and an element. In the removal section 20, the above-mentioned removal step S20 is performed.
  • the cleaning device 100 includes a filtration unit 60 that filters the second humidity conditioning liquid, and an ultrasonic cleaning unit that cleans the humidity conditioning material with ultrasonic waves whose amplitude is smaller than the particle size of dirt particles. It is preferable to further include 70.
  • the filtration unit 60 may include a filtration device, but is not limited to these as long as it can perform filtration.
  • the ultrasonic cleaning section 70 may be an ultrasonic device equipped with a vibrator. Further, the cleaning liquid filtered by the filtering section 60 may be put into the storage section 9.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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PCT/JP2023/022674 2022-06-23 2023-06-20 洗浄方法及び洗浄装置 Ceased WO2023248995A1 (ja)

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CN202380047196.7A CN119365257A (zh) 2022-06-23 2023-06-20 清洗方法和清洗装置
JP2024529016A JPWO2023248995A1 (https=) 2022-06-23 2023-06-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025197658A1 (ja) * 2024-03-21 2025-09-25 シャープ株式会社 調湿エレメント及び全熱交換装置
WO2025197442A1 (ja) * 2024-03-18 2025-09-25 シャープ株式会社 除湿装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003117389A (ja) * 2001-10-19 2003-04-22 Bridgestone Corp オゾン分解型ガス吸着剤及びこの吸着剤を用いたフィルター材とその再生方法、並びに再生品
JP2005270958A (ja) * 2004-02-27 2005-10-06 Fujio Abe 調湿材とその調湿方法
JP2010196042A (ja) * 2009-01-28 2010-09-09 Unitika Ltd 高度に柔軟なゲル状組成物およびその用途
JP2014214479A (ja) * 2013-04-25 2014-11-17 ミサワホーム株式会社 冷暗所付き住宅

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003117389A (ja) * 2001-10-19 2003-04-22 Bridgestone Corp オゾン分解型ガス吸着剤及びこの吸着剤を用いたフィルター材とその再生方法、並びに再生品
JP2005270958A (ja) * 2004-02-27 2005-10-06 Fujio Abe 調湿材とその調湿方法
JP2010196042A (ja) * 2009-01-28 2010-09-09 Unitika Ltd 高度に柔軟なゲル状組成物およびその用途
JP2014214479A (ja) * 2013-04-25 2014-11-17 ミサワホーム株式会社 冷暗所付き住宅

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025197442A1 (ja) * 2024-03-18 2025-09-25 シャープ株式会社 除湿装置
WO2025197658A1 (ja) * 2024-03-21 2025-09-25 シャープ株式会社 調湿エレメント及び全熱交換装置

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CN119365257A (zh) 2025-01-24

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