WO2023074959A1 - Heat exchanger for air conditioner having virus removal function and manufacturing method therefor - Google Patents

Heat exchanger for air conditioner having virus removal function and manufacturing method therefor Download PDF

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Publication number
WO2023074959A1
WO2023074959A1 PCT/KR2021/015377 KR2021015377W WO2023074959A1 WO 2023074959 A1 WO2023074959 A1 WO 2023074959A1 KR 2021015377 W KR2021015377 W KR 2021015377W WO 2023074959 A1 WO2023074959 A1 WO 2023074959A1
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WIPO (PCT)
Prior art keywords
photocatalyst
heat exchange
heat exchanger
air conditioner
tungsten oxide
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PCT/KR2021/015377
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French (fr)
Korean (ko)
Inventor
이용범
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주식회사 다람이엔지
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Publication of WO2023074959A1 publication Critical patent/WO2023074959A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present invention relates to a heat exchanger for an air conditioner, and more particularly, to a heat exchanger for an air conditioner having a virus removal function by coating a visible light responsive photocatalyst on the heat exchanger for an air conditioner and a method for manufacturing the same.
  • an air conditioner is installed with a plasma sterilizer or an ozone sterilizer to generate ozone to remove bacteria or viruses.
  • ozone generated from such a plasma sterilizer or ozone sterilizer is known to cause respiratory diseases to humans, and controversy over safety continues.
  • a technology using a photocatalyst is disclosed as another example of a technology for removing bacteria and viruses applied to an air conditioner.
  • the photocatalyst is manufactured in the form of a separate filter and installed in the air conditioner.
  • a separate support for mounting the photocatalyst in the form of a filter and a light source for activating the photocatalyst must be additionally provided there is a problem.
  • an ultraviolet rays lamp was used as a light source for activating the photocatalyst, but there is a problem in that ultraviolet rays cause skin diseases when exposed to humans for a long time.
  • the present invention has been made to solve the above problems, and has a bacteria and virus removal effect by applying a photocatalyst to an air conditioning device, but can be applied without adding a separate device, and bacteria and viruses according to the activation of the photocatalyst It is an object of the present invention to provide a heat exchanger for an air conditioner having a virus removal function and a method for manufacturing the same so that the virus removal effect can be improved.
  • a heat exchanger for an air conditioner having a virus removal function includes a plurality of heat exchange fins arranged spaced apart from each other and a heat exchange tube installed to penetrate the heat exchange fins
  • a visible light responsive photocatalyst is coated on the heat exchange pin.
  • a light source for activating the photocatalyst coated on the heat exchange fin is installed in the heat exchanger, and the light emitted from the light source is reflected to the heat exchange fin between the heat exchange fins coated with the photocatalyst.
  • a reflector is installed for
  • the photocatalyst includes 50 to 95% by weight of titanium oxide; and 5 to 50% by weight of tungsten oxide or copper tungsten oxide.
  • the photocatalyst includes 50 to 95% by weight of titanium oxide; 5 to 50% by weight of tungsten oxide or copper tungsten oxide; and 0.001 to 0.1% by weight of platinum.
  • a method of manufacturing a heat exchanger for an air conditioner having a virus removal function includes a photocatalyst material manufacturing step of manufacturing a visible light responsive photocatalyst material; a photocatalyst material coating step of coating the heat exchange pin with the photocatalyst material; and an assembling step of assembling the heat exchange fin and the heat exchange tube.
  • a titanium oxide material made of titanium hydroxide gel or crystallized titanium oxide and sodium hydroxide solution are added to tungsten oxide oxidized cemented carbide sludge and sodium tungstate obtained by heating the cation a material mixing step of mixing a tungsten oxide material made of a tungsten oxide colloid made by passing through a resin; and a heat treatment step of heat-treating the mixture of the titanium oxide material and the tungsten oxide material at 400 to 600°C.
  • the photocatalyst material coating step may include a primer application step of applying an inorganic primer to the heat exchange pin; a photocatalyst sol manufacturing step of mixing an inorganic binder with the photocatalyst material to prepare a photocatalyst material in a sol state; and a photocatalyst sol coating step of coating the heat exchange pin with the photocatalyst sol.
  • the inorganic binder is polymerized with 20 to 30% by weight of sodium silicate, 5 to 15% by weight of potassium silicate, 50 to 70% by weight of water, and 3 to 7% by weight of a dispersant at a temperature of 250 to 350 ° C. made by reacting
  • the visible light responsive photocatalyst is coated on the heat exchange pin, germs and viruses in the air passing through the heat exchange pin can be removed without the addition of a separate device, and the photocatalyst can be used in general lighting including fluorescent lamps. , since it is activated in the visible light region such as LED and OLED lighting, there is an effect that the bacteria and virus removal performance can be further improved.
  • FIG. 1 is a front configuration diagram of a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention.
  • FIG. 2 is a front configuration diagram of a heat exchanger for an air conditioner having a virus removal function according to another embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for manufacturing a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention.
  • FIG. 1 is a front configuration diagram of a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention
  • FIG. 2 is a view of a heat exchanger for an air conditioner having a virus removal function according to another embodiment of the present invention. It is a front view.
  • the heat exchanger for an air conditioner having a virus removal function (hereinafter, abbreviated as a 'heat exchanger') according to the present invention includes a plurality of heat exchange fins 110 arranged spaced apart from each other. And, in the heat exchanger 100 for an air conditioner including a heat exchange tube 120 installed to pass through the heat exchange fin 110, the heat exchange fin 110 is coated with a visible light responsive photocatalyst 130. to be characterized
  • the photocatalyst 130 is 50 to 95% by weight of titanium oxide; and 5 to 50% by weight of tungsten oxide or copper tungsten oxide.
  • the photocatalyst 130 is 50 to 95% by weight of titanium oxide; 5 to 50% by weight of tungsten oxide or copper tungsten oxide; And 0.001 to 0.1% by weight of platinum; may be made of a mixture containing.
  • the photocatalyst 130 uses titanium oxide and tungsten oxide as main materials.
  • the titanium oxide has been confirmed to be effective as a photocatalyst in the ultraviolet region, but has a disadvantage in that the photocatalytic effect is insignificant in the visible region. That is, since ultraviolet light accounts for only about 4% of sunlight, the efficiency as a photocatalyst is greatly reduced in a room where there is little ultraviolet light.
  • titanium oxide has a photocatalytic effect in the visible light region, but when tungsten oxide is used alone, it is known that it is effective only at a specific wavelength and generally has a low photocatalytic effect in visible light.
  • the visible light responsive photocatalyst 130 is prepared by mixing titanium oxide and tungsten oxide in a certain ratio, the photocatalytic effect in the visible light region is superior to that of titanium oxide and tungsten oxide alone.
  • a light source 140 for activating the photocatalyst 130 coated on the heat exchange fin 110 is installed in the heat exchanger 100 of the present invention, and the photocatalyst 130 is coated.
  • a reflector 150 may be installed between the heat exchange fins 110 to reflect the light emitted from the light source 140 to the heat exchange fins 110 .
  • the light source 140 an LED lamp emitting white light having a wavelength of 400 to 800 nm is used.
  • a plurality of light sources 140 may be arranged along the direction in which the heat exchange fin 110 and the reflector 150 are arranged at the upper and lower portions of the heat exchanger 100, respectively. According to this, when the activity of the photocatalyst 130 due to sunlight is insignificant, the activity of the photocatalyst 130 can be increased using the light source 140 .
  • Both surfaces of the reflector 150 are formed to reflect light so that the light emitted from the light source 140 can be reflected to the two heat exchange fins 110 disposed adjacent to the reflector 150 . According to this, the amount of light applied to the photocatalyst 130 coated on the heat exchange fin 110 can be increased.
  • the reflector 150 is made of a metal plate having the same shape as the heat exchange fin 110 and is configured to function as a heat exchange fin.
  • FIG. 3 is a flowchart of a method for manufacturing a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention.
  • the method of manufacturing a heat exchanger includes a photocatalyst material manufacturing step (S10), a photocatalyst material coating step (S20), and an assembling step (S30).
  • the photocatalyst material manufacturing step (S10) is a step for manufacturing a visible light responsive photocatalyst material, including a material mixing step (S11) of mixing a titanium oxide material and a tungsten oxide material; and a heat treatment step (S12) of heat-treating the mixture of the titanium oxide material and the tungsten oxide material at 400 to 600°C.
  • titanium hydroxide gel obtained by hydrolyzing a titanium metal salt solution or titanium oxide crystallized by heat treatment of titanium hydroxide gel is used as the titanium oxide material.
  • a tungsten oxide colloid is used as the tungsten oxide material by adding sodium hydroxide solution to tungsten oxide obtained by oxidizing cemented carbide sludge and passing sodium tungstate obtained by heating through a cation exchange resin.
  • a colloidal suspension or colloid is a mixture in which an insoluble material having a size of 1 to 1000 nm is dispersed and mixed with other materials, unlike a solution in which a solvent and a solute are completely mixed to form a single phase. Therefore, tungsten oxide colloid is a mixture of tungsten oxide fine particles with other substances in a sprayed state. When such tungsten oxide colloid is mixed with titanium hydroxide gel or titanium oxide, mechanical mixing for a long time is not required, and bonding with titanium oxide is easily achieved.
  • titanium oxide TiO 2
  • the material of titanium oxide (TiO 2 ) is hydrolyzed according to a thermal hydrolysis process after dispersing a titanium metal salt solution in a solvent.
  • the temperature of the thermal hydrolysis is 60 to 100 ° C.
  • the quantitative chemical formula of titanium hydroxide is Ti(OH) 4 , but since Ti-OH bonds and Ti-O bonds are mixed in an amorphous state, it is not expressed as a quantitative chemical formula.
  • the titanium hydroxide gel is washed with water or alcohol, separated and filtered, and used as a photocatalyst material, or the washed titanium hydroxide gel is re-dispersed in water, put into a pressure vessel, and heat-treated, for example, at 100 to 300 ° C. for 100 hours.
  • crystallized titanium oxide can be prepared and used as a photocatalytic material.
  • tungsten oxide colloid is prepared from cemented carbide sludge and used.
  • tungsten oxide colloidal from cemented sludge a process of separating tungsten oxide and the remaining impurities from cemented sludge is required.
  • Produce tungsten sludge the prepared impurity-containing tungsten oxide is put into a solution of an aqueous solution of sodium hydroxide heated to 100° C., stirred while heating to form sodium tungstate, and a process of separating from impurities is performed.
  • the prepared sodium tungstate (sodium tungstate, sodium tungstate) is passed through a cation exchange resin to form a tungsten oxide colloid.
  • Cation exchange resin is a synthetic resin that exchanges its own cations with cations in an aqueous solution. When sodium tungstate is passed through cation exchange resin, cations are exchanged to form tungsten oxide colloid.
  • a second element such as copper may be added to the material of tungsten oxide (WO3).
  • copper is prepared by reacting anhydrous copper chloride (CuCl 2 ) with tungsten oxide in a colloidal state. That is, the addition of copper is produced by reaction with tungsten oxide colloid.
  • the titanium dioxide gel prepared in this way and tungsten oxide colloid (or tungsten oxide colloid to which a second element is added) are mixed in an appropriate ratio and used as a photocatalyst material.
  • the mixing ratio of titanium oxide and tungsten oxide is 50 to 95% by weight of titanium oxide and 5 to 50% by weight of tungsten oxide (or copper tungsten oxide).
  • platinum may be further added as a cocatalyst.
  • Platinum (Pt) may be added to either the titanium oxide sol or the tungsten oxide colloid, but it must be added before synthesizing the titanium oxide and the tungsten oxide colloid. At this time, platinum is added to be 0.001 to 0.1% by weight with respect to the total weight.
  • the titanium oxide containing platinum and tungsten oxide (or copper tungsten oxide) prepared as described above is heat treated through the heat treatment step (S12) to prepare a visible light responsive photocatalyst material.
  • titanium oxide added with platinum and tungsten oxide (or copper tungsten oxide) is heated in a temperature range of 400 to 600 ° C. so that the ratio of anatase (titanium dioxide) is 70% or more. Heat treatment for 2 hours to produce a visible light responsive photocatalyst material.
  • the photocatalyst material coating step (S20) includes a primer application step (S21) of applying an inorganic primer to the heat exchange fins 110; a photocatalyst sol preparation step (S22) of preparing a photocatalyst material in a sol state by mixing an inorganic binder with the photocatalyst material; and a photocatalyst sol coating step (S23) of coating the heat exchange pin 110 with the photocatalyst sol.
  • an inorganic primer is used because the organic material may be decomposed by the activity of the photocatalyst 130 when an organic primer is used. If necessary, before the primer application step ( S21 ) is performed, a step of washing and drying the heat exchange fin 110 may be performed. And, after the primer application step (S21), a step of drying the applied primer may be performed.
  • the photocatalyst material manufactured in the photocatalyst material manufacturing step (S10) is mixed with an inorganic binder to form a sol state.
  • an inorganic binder is used so that the binder is not decomposed by the activity of the photocatalyst 130 like the primer.
  • the inorganic binder is prepared by polymerization of 20 to 30% by weight of sodium silicate, 5 to 15% by weight of potassium silicate, 50 to 70% by weight of water, and 3 to 7% by weight of a dispersant at a temperature of 250 to 350 ° C.
  • the inorganic binder thus manufactured enables the photocatalytic material to be coated on the heat exchange fin 110 made of aluminum without peeling.
  • the photocatalytic sol coating step (S23) may be performed by a gravure coating method suitable for high-speed and mass production. After the photocatalyst sol coating step ( S23 ), a step of drying and curing the photocatalyst 130 coated on the heat exchange pin 110 may be performed.
  • the assembling step (S30) is a step of assembling the heat exchange fin 110 coated with the photocatalyst 130 and the heat exchange tube 120.
  • the assembly of the heat exchange fin 110 and the heat exchange tube 120 may be performed in the same manner as the assembly method used in manufacturing a known heat exchanger.
  • the visible light responsive photocatalyst 130 is coated on the heat exchange pins 110, air passing through the heat exchange pins 110 without adding a separate device. Bacteria and viruses can be removed, and since the photocatalyst 130 is activated in the visible light region of general lighting including fluorescent lamps, LED and OLED lighting, the performance of removing bacteria and viruses can be further improved.

Abstract

The present invention relates to a heat exchanger for an air conditioner. Disclosed are a heat exchanger for an air conditioner and a manufacturing method therefor, the heat exchanger for an air conditioner comprising: a plurality of heat exchange fins arranged so as to be spaced apart from each other; and a heat exchange tube mounted so as to penetrate through the heat exchange fins, wherein the heat exchange fins are coated with a visible light responsive photocatalyst so as to have a virus removal function.

Description

바이러스 제거기능을 갖는 공기조화장치용 열교환기 및 그 제조방법Heat exchanger for air conditioner having virus removal function and manufacturing method thereof
본 발명은 공기조화장치용 열교환기에 관한 것으로서, 더욱 상세하게는 공기조화장치용 열교환기에 가시광 응답성 광촉매를 코팅함으로써 바이러스 제거기능을 갖게 한 공기조화장치용 열교환기 및 그 제조방법에 관한 것이다.The present invention relates to a heat exchanger for an air conditioner, and more particularly, to a heat exchanger for an air conditioner having a virus removal function by coating a visible light responsive photocatalyst on the heat exchanger for an air conditioner and a method for manufacturing the same.
일반적으로 공기조화장치에는 플라즈마 살균장치나 오존 살균장치를 설치하여 오존을 발생시킴으로써 세균이나 바이러스를 제거하고 있다.In general, an air conditioner is installed with a plasma sterilizer or an ozone sterilizer to generate ozone to remove bacteria or viruses.
그런데 이러한 플라즈마 살균장치나 오존 살균장치에서 발생하는 오존은 사람에게 호흡기 질환 등을 유발한다고 알려져 안전성에 대한 논란이 계속되고 있다.However, ozone generated from such a plasma sterilizer or ozone sterilizer is known to cause respiratory diseases to humans, and controversy over safety continues.
한편, 공기조화장치에 적용된 세균 및 바이러스 제거 기술의 다른 예로서 광촉매를 이용한 기술이 개시되어 있다.Meanwhile, a technology using a photocatalyst is disclosed as another example of a technology for removing bacteria and viruses applied to an air conditioner.
그런데 상기 광촉매를 이용한 방식의 경우 광촉매가 별도의 필터 형태로 제작되어 공기조화장치에 장착되는데 이때 필터 형태로 된 광촉매를 장착하기 위한 별도의 지지체 및 광촉매를 활성화하기 위한 광원 등이 추가로 구비되어야 하는 문제가 있다.However, in the case of the method using the photocatalyst, the photocatalyst is manufactured in the form of a separate filter and installed in the air conditioner. At this time, a separate support for mounting the photocatalyst in the form of a filter and a light source for activating the photocatalyst must be additionally provided there is a problem.
아울러, 종래에는 광촉매를 활성화하기 위한 광원으로써 자외선램프(ultraviolet rays lamp)를 이용하였는데, 자외선은 사람에게 장시간 노출되면 피부질환을 일으키는 등의 문제가 있다.In addition, conventionally, an ultraviolet rays lamp was used as a light source for activating the photocatalyst, but there is a problem in that ultraviolet rays cause skin diseases when exposed to humans for a long time.
본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 공기조화장치에 광촉매를 적용하여 세균 및 바이러스 제거 효과를 갖도록 하되, 별도의 장치의 추가 없이 적용이 가능하고, 광촉매의 활성화에 따른 세균 및 바이러스 제거 효과가 향상될 수 있도록 한 바이러스 제거기능을 갖는 공기조화장치용 열교환기 및 그 제조방법을 제공하는 것을 목적으로 한다.The present invention has been made to solve the above problems, and has a bacteria and virus removal effect by applying a photocatalyst to an air conditioning device, but can be applied without adding a separate device, and bacteria and viruses according to the activation of the photocatalyst It is an object of the present invention to provide a heat exchanger for an air conditioner having a virus removal function and a method for manufacturing the same so that the virus removal effect can be improved.
본 발명의 해결하고자 하는 과제는 언급한 과제로 제한되지 않는다. 언급하지 않은 다른 기술적 과제들은 이하의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.The problem to be solved by the present invention is not limited to the above-mentioned problem. Other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.
상기와 같은 과제를 해결하기 위하여 본 발명에 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기는, 상호 이격되게 배열된 다수의 열교환핀과, 상기 열교환핀을 관통하도록 설치된 열교환튜브를 포함하는 공기조화장치용 열교환기에 있어서, 상기 열교환핀에는 가시광 응답형 광촉매가 코팅된 것을 특징으로 한다.In order to solve the above problems, a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention includes a plurality of heat exchange fins arranged spaced apart from each other and a heat exchange tube installed to penetrate the heat exchange fins In the heat exchanger for an air conditioner, a visible light responsive photocatalyst is coated on the heat exchange pin.
본 발명의 실시예에서, 상기 열교환기에는 상기 열교환핀에 코팅된 광촉매를 활성화하기 위한 광원이 설치되고, 상기 광촉매가 코팅된 열교환핀의 사이사이에는 상기 광원에서 조사된 빛을 열교환핀으로 반사하기 위한 반사판이 설치된다.In an embodiment of the present invention, a light source for activating the photocatalyst coated on the heat exchange fin is installed in the heat exchanger, and the light emitted from the light source is reflected to the heat exchange fin between the heat exchange fins coated with the photocatalyst. A reflector is installed for
본 발명의 실시예에서, 상기 광촉매는, 산화티타늄 50 내지 95중량%; 및 산화텅스텐 또는 구리텅스텐산화물 5 내지 50 중량%;를 포함하는 혼합물로 이루어진다.In an embodiment of the present invention, the photocatalyst includes 50 to 95% by weight of titanium oxide; and 5 to 50% by weight of tungsten oxide or copper tungsten oxide.
본 발명의 실시예에서, 상기 광촉매는, 산화티타늄 50 내지 95중량%; 산화텅스텐 또는 구리텅스텐산화물 5 내지 50 중량%; 및 백금 0.001 내지 0.1중량%;를 포함하는 혼합물로 이루어진다.In an embodiment of the present invention, the photocatalyst includes 50 to 95% by weight of titanium oxide; 5 to 50% by weight of tungsten oxide or copper tungsten oxide; and 0.001 to 0.1% by weight of platinum.
한편, 상기와 같은 과제를 해결하기 위하여 본 발명에 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 제조방법은, 가시광 응답형 광촉매 소재를 제작하는 광촉매 소재 제작 단계; 상기 열교환핀에 상기 광촉매 소재를 코팅하는 광촉매 소재 코팅 단계; 및 상기 열교환핀과 열교환튜브를 조립하는 조립 단계;를 포함하여 이루어진다.On the other hand, in order to solve the above problems, a method of manufacturing a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention includes a photocatalyst material manufacturing step of manufacturing a visible light responsive photocatalyst material; a photocatalyst material coating step of coating the heat exchange pin with the photocatalyst material; and an assembling step of assembling the heat exchange fin and the heat exchange tube.
본 발명의 실시예에서, 상기 광촉매 소재 제작 단계는, 수산화티탄 겔 또는 결정화된 산화티타늄으로 된 산화티타늄 재료와, 초경슬러지를 산화시킨 산화텅스텐에 수산화나트륨 수용액을 넣고 가열하여 얻은 나트륨텅스테이트를 양이온수지를 통과시켜 만들어진 산화텅스텐 콜로이드로 된 산화텅스텐 재료를 혼합하는 재료 혼합 단계; 및 상기 산화티타늄 재료와 산화텅스텐 재료의 혼합물을 400 내지 600℃로 열처리하는 열처리 단계;를 포함하여 이루어진다.In an embodiment of the present invention, in the step of preparing the photocatalyst material, a titanium oxide material made of titanium hydroxide gel or crystallized titanium oxide and sodium hydroxide solution are added to tungsten oxide oxidized cemented carbide sludge and sodium tungstate obtained by heating the cation a material mixing step of mixing a tungsten oxide material made of a tungsten oxide colloid made by passing through a resin; and a heat treatment step of heat-treating the mixture of the titanium oxide material and the tungsten oxide material at 400 to 600°C.
본 발명의 실시예에서, 상기 광촉매 소재 코팅 단계는, 상기 열교환핀에 무기질 프라이머를 도포하는 프라이머 도포 단계; 상기 광촉매 소재에 무기질 바인더를 혼합하여 졸(sol) 상태의 광촉매 소재를 제작하는 광촉매 졸 제작 단계; 및 상기 광촉매 졸을 상기 열교환핀에 코팅하는 광촉매 졸 코팅 단계;를 포함하여 이루어진다.In an embodiment of the present invention, the photocatalyst material coating step may include a primer application step of applying an inorganic primer to the heat exchange pin; a photocatalyst sol manufacturing step of mixing an inorganic binder with the photocatalyst material to prepare a photocatalyst material in a sol state; and a photocatalyst sol coating step of coating the heat exchange pin with the photocatalyst sol.
본 발명의 실시예에서, 상기 무기질 바인더는, 규산나트륨 20 내지 30중량%, 규산칼륨 5 내지 15중량%, 물 50 내지 70중량% 및 분산제 3 내지 7중량%를 250 내지 350℃의 온도에서 중합반응시켜 제작된다.In an embodiment of the present invention, the inorganic binder is polymerized with 20 to 30% by weight of sodium silicate, 5 to 15% by weight of potassium silicate, 50 to 70% by weight of water, and 3 to 7% by weight of a dispersant at a temperature of 250 to 350 ° C. made by reacting
본 발명의 실시예에 의하면, 열교환핀에 가시광 응답형 광촉매가 코팅됨에 따라 별도의 장치의 추가 없이 상기 열교환핀을 통과하는 공기 중의 세균 및 바이러스를 제거할 수 있으며, 상기 광촉매가 형광등을 포함한 일반 조명등, LED 및 OLED 조명 등의 가시광 영역에서 활성화되므로 세균 및 바이러스 제거 성능이 더욱 향상될 수 있는 효과가 있다.According to an embodiment of the present invention, as the visible light responsive photocatalyst is coated on the heat exchange pin, germs and viruses in the air passing through the heat exchange pin can be removed without the addition of a separate device, and the photocatalyst can be used in general lighting including fluorescent lamps. , since it is activated in the visible light region such as LED and OLED lighting, there is an effect that the bacteria and virus removal performance can be further improved.
도 1은 본 발명의 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 정면 구성도.1 is a front configuration diagram of a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention.
도 2는 본 발명의 다른 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 정면 구성도.2 is a front configuration diagram of a heat exchanger for an air conditioner having a virus removal function according to another embodiment of the present invention.
도 3은 본 발명의 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기 제조방법의 흐름도.3 is a flowchart of a method for manufacturing a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명한다. 설명의 편의를 위해 도면에 도시된 구성요소는 과장되거나 생략되거나 또는 개략적으로 표현될 수 있다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, components shown in the drawings may be exaggerated, omitted, or schematically represented.
도 1은 본 발명의 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 정면 구성도이고, 도 2는 본 발명의 다른 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 정면 구성도이다.1 is a front configuration diagram of a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention, and FIG. 2 is a view of a heat exchanger for an air conditioner having a virus removal function according to another embodiment of the present invention. It is a front view.
도 1 및 도 2에 도시된 바와 같이, 본 발명에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기(이하, '열교환기'라고 약칭함)는 상호 이격되게 배열된 다수의 열교환핀(110)과, 상기 열교환핀(110)을 관통하도록 설치된 열교환튜브(120)를 포함하는 공기조화장치용 열교환기(100)에 있어서, 상기 열교환핀(110)에는 가시광 응답형 광촉매(130)가 코팅된 것을 특징으로 한다.As shown in FIGS. 1 and 2, the heat exchanger for an air conditioner having a virus removal function (hereinafter, abbreviated as a 'heat exchanger') according to the present invention includes a plurality of heat exchange fins 110 arranged spaced apart from each other. And, in the heat exchanger 100 for an air conditioner including a heat exchange tube 120 installed to pass through the heat exchange fin 110, the heat exchange fin 110 is coated with a visible light responsive photocatalyst 130. to be characterized
여기서 상기 광촉매(130)는 산화티타늄 50 내지 95중량%; 및 산화텅스텐 또는 구리텅스텐산화물 5 내지 50 중량%;를 포함하는 혼합물로 이루어진다.Here, the photocatalyst 130 is 50 to 95% by weight of titanium oxide; and 5 to 50% by weight of tungsten oxide or copper tungsten oxide.
필요에 따라 상기 혼합물에는 조촉매로서 백금이 첨가될 수 있다. 이때 상기 광촉매(130)는 산화티타늄 50 내지 95중량%; 산화텅스텐 또는 구리텅스텐산화물 5 내지 50 중량%; 및 백금 0.001 내지 0.1중량%;를 포함하는 혼합물로 이루어질 수 있다.If necessary, platinum may be added to the mixture as a cocatalyst. At this time, the photocatalyst 130 is 50 to 95% by weight of titanium oxide; 5 to 50% by weight of tungsten oxide or copper tungsten oxide; And 0.001 to 0.1% by weight of platinum; may be made of a mixture containing.
상기와 같이 본 발명의 열교환기(100)에서 상기 광촉매(130)는 산화티타늄과 산화텅스텐을 주재료로 사용한다. 상기 산화티타늄은 자외선 영역에서 광촉매로써 효과가 우수한 것으로 확인되었으나, 가시광 영역에서는 광촉매 효과가 미미하다는 단점이 있다. 즉, 태양광에서 자외광은 약 4%에 지나지 않기 때문에 자외광이 거의 없는 실내에서는 광촉매로써의 효율이 크게 떨어진다. 반면에 산화티타늄은 가시광 영역에서 광촉매 효과가 있으나, 산화텅스텐을 단독으로 사용하는 경우 특정 파장에서만 효과가 있고 전반적으로 가시광에서 광촉매 효과가 적은 것으로 알려졌다.As described above, in the heat exchanger 100 of the present invention, the photocatalyst 130 uses titanium oxide and tungsten oxide as main materials. The titanium oxide has been confirmed to be effective as a photocatalyst in the ultraviolet region, but has a disadvantage in that the photocatalytic effect is insignificant in the visible region. That is, since ultraviolet light accounts for only about 4% of sunlight, the efficiency as a photocatalyst is greatly reduced in a room where there is little ultraviolet light. On the other hand, titanium oxide has a photocatalytic effect in the visible light region, but when tungsten oxide is used alone, it is known that it is effective only at a specific wavelength and generally has a low photocatalytic effect in visible light.
본 발명에서는 산화티타늄과 산화텅스텐을 일정 비율로 혼합하여 가시광 응답형 광촉매(130)를 제작함으로써 산화티타늄과 산화텅스텐을 각각 단독으로 사용하는 경우보다 가시광 영역에서의 광촉매 효과가 우수하다.In the present invention, since the visible light responsive photocatalyst 130 is prepared by mixing titanium oxide and tungsten oxide in a certain ratio, the photocatalytic effect in the visible light region is superior to that of titanium oxide and tungsten oxide alone.
한편, 도 2에 도시된 바와 같이 본 발명의 열교환기(100)에는 상기 열교환핀(110)에 코팅된 광촉매(130)를 활성화하기 위한 광원(140)이 설치되고, 상기 광촉매(130)가 코팅된 열교환핀(110)의 사이사이에는 상기 광원(140)에서 조사된 빛을 열교환핀(110)으로 반사하는 반사판(150)이 설치될 수 있다.Meanwhile, as shown in FIG. 2, a light source 140 for activating the photocatalyst 130 coated on the heat exchange fin 110 is installed in the heat exchanger 100 of the present invention, and the photocatalyst 130 is coated. A reflector 150 may be installed between the heat exchange fins 110 to reflect the light emitted from the light source 140 to the heat exchange fins 110 .
여기서 상기 광원(140)은 400 내지 800㎚ 파장의 백색광을 방사하는 LED램프가 사용된다. 상기 광원(140)은 상기 열교환기(100)의 상부 및 하부 각각에 상기 열교환핀(110)과 반사판(150)이 배열된 방향을 따라 다수가 배열될 수 있다. 이에 의하면, 태양광으로 인한 상기 광촉매(130)의 활성도가 미미할 경우 상기 광원(140)을 이용하여 광촉매(130)의 활성도를 높일 수 있다.Here, as the light source 140, an LED lamp emitting white light having a wavelength of 400 to 800 nm is used. A plurality of light sources 140 may be arranged along the direction in which the heat exchange fin 110 and the reflector 150 are arranged at the upper and lower portions of the heat exchanger 100, respectively. According to this, when the activity of the photocatalyst 130 due to sunlight is insignificant, the activity of the photocatalyst 130 can be increased using the light source 140 .
상기 반사판(150)은 양측 표면이 빛을 반사할 수 있게 형성되어 반사판(150)과 인접하게 배치된 두 열교환핀(110)에 상기 광원(140)에서 조사된 빛을 반사할 수 있게 구성된다. 이에 의하면, 상기 열교환핀(110)에 코팅된 광촉매(130)에 가해지는 광량이 증가시킬 수 있다.Both surfaces of the reflector 150 are formed to reflect light so that the light emitted from the light source 140 can be reflected to the two heat exchange fins 110 disposed adjacent to the reflector 150 . According to this, the amount of light applied to the photocatalyst 130 coated on the heat exchange fin 110 can be increased.
상기 반사판(150)은 상기 열교환핀(110)과 동일한 형상의 금속판으로 이루어져 열교환핀으로써의 기능도 수행할 수 있게 구성된다.The reflector 150 is made of a metal plate having the same shape as the heat exchange fin 110 and is configured to function as a heat exchange fin.
이하, 도 3을 더 참조하여 본 발명의 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 제조방법을 설명한다.Hereinafter, a method of manufacturing a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention will be described with further reference to FIG. 3 .
도 3은 본 발명의 실시예에 의한 바이러스 제거기능을 갖는 공기조화장치용 열교환기 제조방법의 흐름도이다.3 is a flowchart of a method for manufacturing a heat exchanger for an air conditioner having a virus removal function according to an embodiment of the present invention.
도 3에 도시된 바와 같이 본 발명의 실시예에 의한 열교환기의 제조방법은, 광촉매 소재 제작 단계(S10), 광촉매 소재 코팅 단계(S20) 및 조립 단계(S30)를 포함하여 이루어진다.As shown in FIG. 3 , the method of manufacturing a heat exchanger according to an embodiment of the present invention includes a photocatalyst material manufacturing step (S10), a photocatalyst material coating step (S20), and an assembling step (S30).
상기 광촉매 소재 제작 단계(S10)는 가시광 응답성 광촉매 소재를 제작하기 위한 단계로서, 산화티타늄 재료와 산화텅스텐 재료를 혼합하는 재료 혼합 단계(S11); 및 상기 산화티타늄 재료와 산화텅스텐 재료의 혼합물을 400 내지 600℃로 열처리하는 열처리 단계(S12);를 포함하여 이루어진다.The photocatalyst material manufacturing step (S10) is a step for manufacturing a visible light responsive photocatalyst material, including a material mixing step (S11) of mixing a titanium oxide material and a tungsten oxide material; and a heat treatment step (S12) of heat-treating the mixture of the titanium oxide material and the tungsten oxide material at 400 to 600°C.
상기 재료 혼합 단계(S11)에서 상기 산화티타늄 재료는 티타늄금속염액을 가수분해한 수산화티탄 겔이나, 수산화티탄 겔을 열처리하여 결정화된 산화티타늄을 사용한다. 그리고 상기 산화텅스텐 재료는 초경슬러지를 산화시킨 산화텅스텐에 수산화나트륨 수용액을 넣고 가열하여 얻은 나트륨텅스테이트를 양이온교환수지를 통과시켜 만들어 산화텅스텐 콜로이드를 사용한다.In the material mixing step (S11), titanium hydroxide gel obtained by hydrolyzing a titanium metal salt solution or titanium oxide crystallized by heat treatment of titanium hydroxide gel is used as the titanium oxide material. And, as the tungsten oxide material, a tungsten oxide colloid is used by adding sodium hydroxide solution to tungsten oxide obtained by oxidizing cemented carbide sludge and passing sodium tungstate obtained by heating through a cation exchange resin.
여기서 콜로이드 서스펜션(colloidal suspension) 또는 콜로이드는, 용매와 용질이 완전히 혼합되어 단일상을 이루는 용액과 달리, 크기가 1 내지 1000nm이고 불용성인 물질이 분산된 상태로 다른 물질과 섞여 있는 혼합물이다. 따라서 산화텅스텐 콜로이드는 산화텅스텐 미립자가 분사된 상태로 다른 물질과 섞여 있는 것이다. 이러한 산화텅스텐 콜로이드는 수산화티탄 겔이나 산화티타늄과 혼합될 때 장시간의 기계적 혼합이 요구되지 않을 뿐만 아니라 산화티타늄과의 결합이 쉽게 이루어진다.Here, a colloidal suspension or colloid is a mixture in which an insoluble material having a size of 1 to 1000 nm is dispersed and mixed with other materials, unlike a solution in which a solvent and a solute are completely mixed to form a single phase. Therefore, tungsten oxide colloid is a mixture of tungsten oxide fine particles with other substances in a sprayed state. When such tungsten oxide colloid is mixed with titanium hydroxide gel or titanium oxide, mechanical mixing for a long time is not required, and bonding with titanium oxide is easily achieved.
구체적으로, 산화티타늄(TiO2)의 재료는 티타늄금속염액을 용매로 분산시킨 후 열가수분해 공정에 따라 가수분해시킨다. 이때 열가수분해의 온도는 60 내지 100℃이다. 이와 같이 열가수분해 하면 비정질의 수산화티탄 겔이 얻어진다. 수산화티탄의 정량적인 화학식은 Ti(OH)4이지만 보통 비정질 상태에서는 Ti-OH 결합과 Ti-O 결합이 혼재하므로 정량화학식으로 표기하지는 않는다.Specifically, the material of titanium oxide (TiO 2 ) is hydrolyzed according to a thermal hydrolysis process after dispersing a titanium metal salt solution in a solvent. At this time, the temperature of the thermal hydrolysis is 60 to 100 ° C. By thermal hydrolysis in this way, an amorphous titanium hydroxide gel is obtained. The quantitative chemical formula of titanium hydroxide is Ti(OH) 4 , but since Ti-OH bonds and Ti-O bonds are mixed in an amorphous state, it is not expressed as a quantitative chemical formula.
그리고 수산화티탄 겔을 물 또는 알콜로 세정한 후 분리 여과하여 광촉매 재료로 사용하거나 세정한 수산화티탄 겔을 다시 물에 재산분시킨 후 압력용기에 넣고 열처리 예를 들어, 100 내지 300℃에서 100시간 열처리하여, 결정화된 산화티타늄을 제조하여 광촉매 재료로 사용할 수 있다.Then, the titanium hydroxide gel is washed with water or alcohol, separated and filtered, and used as a photocatalyst material, or the washed titanium hydroxide gel is re-dispersed in water, put into a pressure vessel, and heat-treated, for example, at 100 to 300 ° C. for 100 hours. Thus, crystallized titanium oxide can be prepared and used as a photocatalytic material.
이어 산화텅스텐(WO3)의 재료는 국내에서 구입하기 어렵고 산화텅스텐 분말을 콜로이드(colloidal) 상태로 제조하는 것은 매우 어렵기 때문에 초경슬러지로부터 산화텅스텐 콜로이드를 제조하여 사용한다.Then, since the material of tungsten oxide (WO3) is difficult to purchase domestically and it is very difficult to prepare tungsten oxide powder in a colloidal state, tungsten oxide colloid is prepared from cemented carbide sludge and used.
즉, 초경슬러지로부터 산화텅스텐 콜로이드 상태로 제조하기 위해서는, 먼저 초경슬러지에서 산화텅스텐과 나머지 불순물을 분리하는 공정이 필요한데, 이를 위해서 초경슬러지를 600 내지 800℃의 높은 온도에서 산화시켜 불순물을 함유한 산화텅스텐 슬러지를 제조한다. 그리고 제조된 불순물 함유 산화텅스텐을 수산화나트륨 수용액을 100℃로 가열한 용액에 넣고 가열하면서 교반하여 나트륨텅스테이트가 되도록 하여 불순물과 분리하는 공정을 수행한다.That is, in order to produce tungsten oxide colloidal from cemented sludge, a process of separating tungsten oxide and the remaining impurities from cemented sludge is required. Produce tungsten sludge. Then, the prepared impurity-containing tungsten oxide is put into a solution of an aqueous solution of sodium hydroxide heated to 100° C., stirred while heating to form sodium tungstate, and a process of separating from impurities is performed.
이어 제조된 나트륨텅스테이트(sodium tungstat; 텅스텐산나트륨, 나트륨텅스텐산염)는 양이온교환수지를 통과시켜 산화텅스텐 콜로이드로 제조한다. 양이온교환수지는 수용액 속의 양이온과 자신의 양이온을 교환하는 합성수지로서, 양이온교화수지에 나트륨텅스테이트를 통과시키면 양이온이 교환되어 산화텅스텐 콜로이드로 된다.Subsequently, the prepared sodium tungstate (sodium tungstate, sodium tungstate) is passed through a cation exchange resin to form a tungsten oxide colloid. Cation exchange resin is a synthetic resin that exchanges its own cations with cations in an aqueous solution. When sodium tungstate is passed through cation exchange resin, cations are exchanged to form tungsten oxide colloid.
한편, 산화텅스텐(WO3)의 재료는 구리 등의 제2 원소가 첨가될 수 있다. 예를 들어 구리는 콜로이드 상태의 산화텅스텐에 무수상태의 염화구리(CuCl2)를 반응시켜 제조한다. 즉, 구리의 첨가는 산화텅스텐 콜로이드와의 반응으로 제조한다.Meanwhile, a second element such as copper may be added to the material of tungsten oxide (WO3). For example, copper is prepared by reacting anhydrous copper chloride (CuCl 2 ) with tungsten oxide in a colloidal state. That is, the addition of copper is produced by reaction with tungsten oxide colloid.
이와 같은 방법으로 제조된 이산화티탄 겔과 산화텅스텐 콜로이드(또는 제2 원소가 첨가된 산화텅스텐 콜로이드)를 적정 비율로 혼합하여 광촉매 재료로 사용한다.The titanium dioxide gel prepared in this way and tungsten oxide colloid (or tungsten oxide colloid to which a second element is added) are mixed in an appropriate ratio and used as a photocatalyst material.
바람직하게, 산화티타늄과 산화텅스텐의 혼합비율은 산화티타늄 50 내지 95 중량%과 산화텅스텐(또는 구리텅스텐산화물) 5 내지 50 중량%로 혼합한다.Preferably, the mixing ratio of titanium oxide and tungsten oxide is 50 to 95% by weight of titanium oxide and 5 to 50% by weight of tungsten oxide (or copper tungsten oxide).
또한, 조촉매로서 백금을 더 첨가할 수 있다. 백금(Pt)은 산화티타늄 졸이나 산화텅스텐 콜로이드 중 어느 쪽에 첨가하여도 좋으나, 반드시 티타늄산화물과 산화텅스텐 콜로이드를 합성하기 이전에 첨가해야 한다. 이때 백금은 전체 중량에 대해 0.001 내지 0.1중량%가 되도록 첨가한다.In addition, platinum may be further added as a cocatalyst. Platinum (Pt) may be added to either the titanium oxide sol or the tungsten oxide colloid, but it must be added before synthesizing the titanium oxide and the tungsten oxide colloid. At this time, platinum is added to be 0.001 to 0.1% by weight with respect to the total weight.
이와 같이 제조된 백금 및 산화텅스텐(또는 구리텅스텐산화물) 첨가 티타늄산화물을 상기 열처리 단계(S12)를 통해 열처리하여 가시광 응답형 광촉매 소재를 제조한다. 이때, 상기 열처리 단계(S12)에서는 백금 및 산화텅스텐(또는 구리텅스텐산화물) 첨가 티타늄산화물을 티타늄산화물의 조직이 아나타제(이산화티타늄)의 비율이 70% 이상이 되도록 400 내지 600℃의 온도 범위에서 약 2시간 열처리하여 가시광 응답형 광촉매 소재로 제조한다.The titanium oxide containing platinum and tungsten oxide (or copper tungsten oxide) prepared as described above is heat treated through the heat treatment step (S12) to prepare a visible light responsive photocatalyst material. At this time, in the heat treatment step (S12), titanium oxide added with platinum and tungsten oxide (or copper tungsten oxide) is heated in a temperature range of 400 to 600 ° C. so that the ratio of anatase (titanium dioxide) is 70% or more. Heat treatment for 2 hours to produce a visible light responsive photocatalyst material.
상기 광촉매 소재 코팅 단계(S20)는, 상기 열교환핀(110)에 무기질 프라이머를 도포하는 프라이머 도포 단계(S21); 상기 광촉매 소재에 무기질 바인더를 혼합하여 졸(sol) 상태의 광촉매 소재를 제작하는 광촉매 졸 제작 단계(S22); 및 상기 광촉매 졸을 상기 열교환핀(110)에 코팅하는 광촉매 졸 코팅 단계(S23);를 포함하여 이루어진다.The photocatalyst material coating step (S20) includes a primer application step (S21) of applying an inorganic primer to the heat exchange fins 110; a photocatalyst sol preparation step (S22) of preparing a photocatalyst material in a sol state by mixing an inorganic binder with the photocatalyst material; and a photocatalyst sol coating step (S23) of coating the heat exchange pin 110 with the photocatalyst sol.
상기 프라이머 도포 단계(S21)에서 사용되는 프라이머는, 유기물 프라이머가 사용될 경우 광촉매(130)의 활성에 의해 유기물이 분해될 수 있으므로 무기물 프라이머가 사용된다. 필요에 따라 상기 프라이머 도포 단계(S21)가 실시되기 전에, 상기 열교환핀(110)을 세척 및 건조하는 단계가 실시될 수 있다. 그리고 상기 프라이머 도포 단계(S21) 이후에는 도포된 프라이머를 건조하는 단계가 실시될 수 있다.As the primer used in the primer application step (S21), an inorganic primer is used because the organic material may be decomposed by the activity of the photocatalyst 130 when an organic primer is used. If necessary, before the primer application step ( S21 ) is performed, a step of washing and drying the heat exchange fin 110 may be performed. And, after the primer application step (S21), a step of drying the applied primer may be performed.
상기 광촉매 졸 제작 단계(S22)에서는 상기 광촉매 소재 제작 단계(S10)에서 제작된 광촉매 소재를 무기질 바인더와 혼합하여 졸 상태로 만들게 된다. 이때 상기 바인더는 상기 프라이머와 마찬가지로 광촉매(130)의 활성에 의해 분해되지 않도록 무기질 바인더가 사용된다. 구체적으로 상기 무기질 바인더는 규산나트륨 20 내지 30중량%, 규산칼륨 5 내지 15중량%, 물 50 내지 70중량% 및 분산제 3 내지 7중량%를 250 내지 350℃의 온도에서 중합반응시켜 제작된다. 이렇게 제작된 무기질 바인더는 광촉매 소재를 알루미늄으로 된 열교환핀(110)에 박리현상 없이 코팅할 수 있게 한다.In the photocatalyst sol manufacturing step (S22), the photocatalyst material manufactured in the photocatalyst material manufacturing step (S10) is mixed with an inorganic binder to form a sol state. At this time, an inorganic binder is used so that the binder is not decomposed by the activity of the photocatalyst 130 like the primer. Specifically, the inorganic binder is prepared by polymerization of 20 to 30% by weight of sodium silicate, 5 to 15% by weight of potassium silicate, 50 to 70% by weight of water, and 3 to 7% by weight of a dispersant at a temperature of 250 to 350 ° C. The inorganic binder thus manufactured enables the photocatalytic material to be coated on the heat exchange fin 110 made of aluminum without peeling.
상기 광촉매 졸 코팅 단계(S23)는 고속 및 대량 생산에 적합한 그라비어 코팅 방식에 의해 실시될 수 있다. 상기 광촉매 졸 코팅 단계(S23) 이후에는 상기 열교환핀(110)에 코팅된 광촉매(130)를 건조 및 경화하는 단계가 실시될 수있다.The photocatalytic sol coating step (S23) may be performed by a gravure coating method suitable for high-speed and mass production. After the photocatalyst sol coating step ( S23 ), a step of drying and curing the photocatalyst 130 coated on the heat exchange pin 110 may be performed.
상기 조립 단계(S30)는 상기 광촉매(130)가 코팅된 열교환핀(110)과 상기 열교환튜브(120)를 조립하는 단계이다.The assembling step (S30) is a step of assembling the heat exchange fin 110 coated with the photocatalyst 130 and the heat exchange tube 120.
상기 열교환핀(110)과 열교환튜브(120)의 조립은 공지의 열교환기 제작시 사용되는 조립 방식과 동일한 방식으로 실시될 수 있다.The assembly of the heat exchange fin 110 and the heat exchange tube 120 may be performed in the same manner as the assembly method used in manufacturing a known heat exchanger.
상기와 같이 구성된 본 발명의 열교환기 및 그 제조방법에 의하면, 상기 열교환핀(110)에 가시광 응답형 광촉매(130)가 코팅됨에 따라 별도의 장치의 추가 없이 상기 열교환핀(110)을 통과하는 공기 중의 세균 및 바이러스를 제거할 수 있으며, 나아가 상기 광촉매(130)가 형광등을 포함한 일반 조명등, LED 및 OLED 조명 등의 가시광 영역에서 활성화되므로 세균 및 바이러스 제거 성능이 더욱 향상될 수 있다.According to the heat exchanger and manufacturing method of the present invention configured as described above, as the visible light responsive photocatalyst 130 is coated on the heat exchange pins 110, air passing through the heat exchange pins 110 without adding a separate device. Bacteria and viruses can be removed, and since the photocatalyst 130 is activated in the visible light region of general lighting including fluorescent lamps, LED and OLED lighting, the performance of removing bacteria and viruses can be further improved.
이상에서 본 발명을 설명함에 있어 한정된 실시예 및 도면을 참조하여 설명하였으나, 이는 예시적인 것으로서, 본 발명의 기술사상의 범위 내에서 다양한 변형 실시가 가능하다는 점은 통상의 기술자에게 자명할 것이다. 따라서, 본 발명의 보호범위는 청구범위의 기재 및 그 균등 범위에 의해 정해져야 한다.In the above description of the present invention, it has been described with reference to limited embodiments and drawings, but this is exemplary, and it will be apparent to those skilled in the art that various modifications and implementations are possible within the scope of the technical spirit of the present invention. Therefore, the protection scope of the present invention should be determined by the description of the claims and their equivalents.

Claims (8)

  1. 상호 이격되게 배열된 다수의 열교환핀(110)과, 상기 열교환핀(110)을 관통하도록 설치된 열교환튜브(120)를 포함하는 공기조화장치용 열교환기(100)에 있어서,In the heat exchanger (100) for an air conditioner including a plurality of heat exchange fins (110) arranged spaced apart from each other and a heat exchange tube (120) installed to pass through the heat exchange fins (110),
    상기 열교환핀(110)에는 가시광 응답형 광촉매(130)가 코팅된 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기.The heat exchanger for an air conditioner having a virus removal function, characterized in that the visible light responsive photocatalyst 130 is coated on the heat exchange pin 110.
  2. 제1항에 있어서,According to claim 1,
    상기 열교환기(100)에는 상기 열교환핀(110)에 코팅된 광촉매(130)를 활성화하기 위한 광원(140)이 설치되고,A light source 140 for activating the photocatalyst 130 coated on the heat exchange fin 110 is installed in the heat exchanger 100,
    상기 광촉매(130)가 코팅된 열교환핀(110)의 사이사이에는 상기 광원(140)에서 조사된 빛을 열교환핀(110)으로 반사하는 반사판(150)이 설치된 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기.Having a virus removal function, characterized in that a reflector 150 is installed between the heat exchange fins 110 coated with the photocatalyst 130 to reflect the light irradiated from the light source 140 to the heat exchange fins 110. Heat exchanger for air conditioning system.
  3. 제1항 또는 제2항에 있어서,According to claim 1 or 2,
    상기 광촉매(130)는,The photocatalyst 130,
    산화티타늄 50 내지 95중량%; 및50 to 95% by weight of titanium oxide; and
    산화텅스텐 또는 구리텅스텐산화물 5 내지 50 중량%;를 포함하는 혼합물로 이루어진 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기.5 to 50% by weight of tungsten oxide or copper tungsten oxide; a heat exchanger for an air conditioner having a virus removal function, characterized in that it is made of a mixture containing.
  4. 제1항 또는 제2항에 있어서,According to claim 1 or 2,
    상기 광촉매(130)는,The photocatalyst 130,
    산화티타늄 50 내지 95중량%;50 to 95% by weight of titanium oxide;
    산화텅스텐 또는 구리텅스텐산화물 5 내지 50 중량%; 및5 to 50% by weight of tungsten oxide or copper tungsten oxide; and
    백금 0.001 내지 0.1중량%;를 포함하는 혼합물로 이루어진 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기.0.001 to 0.1% by weight of platinum; a heat exchanger for an air conditioner having a virus removal function, characterized in that consisting of a mixture containing.
  5. 제1항의 공기조화장치용 열교환기를 제조하기 위한 방법으로서,A method for manufacturing the heat exchanger for an air conditioner of claim 1,
    가시광 응답형 광촉매 소재를 제작하는 광촉매 소재 제작 단계(S10);A photocatalyst material manufacturing step (S10) of manufacturing a visible light responsive photocatalyst material;
    상기 열교환핀(110)에 상기 광촉매 소재를 코팅하는 광촉매 소재 코팅 단계(S20); 및a photocatalyst material coating step (S20) of coating the heat exchange pin 110 with the photocatalyst material; and
    상기 열교환핀(110)과 열교환튜브(120)를 조립하는 조립 단계(S30);를 포함하여 이루어진 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 제조방법.An assembling step (S30) of assembling the heat exchange fin 110 and the heat exchange tube 120.
  6. 제5항에 있어서,According to claim 5,
    상기 광촉매 소재 제작 단계(S10)는,In the photocatalyst material manufacturing step (S10),
    수산화티탄 겔 또는 결정화된 산화티타늄으로 된 산화티타늄 재료와, 초경슬러지를 산화시킨 산화텅스텐에 수산화나트륨 수용액을 넣고 가열하여 얻은 나트륨텅스테이트를 양이온수지를 통과시켜 만들어진 산화텅스텐 콜로이드로 된 산화텅스텐 재료를 혼합하는 재료 혼합 단계(S11); 및A titanium oxide material made of titanium hydroxide gel or crystallized titanium oxide and a tungsten oxide material made of tungsten oxide colloid made by passing sodium tungstate obtained by adding sodium hydroxide solution to tungsten oxide oxidized cemented carbide sludge and heating it through a cation resin. Mixing material mixing step (S11); and
    상기 산화티타늄 재료와 산화텅스텐 재료의 혼합물을 400 내지 600℃로 열처리하는 열처리 단계(S12);를 포함하여 이루어진 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 제조방법.A method of manufacturing a heat exchanger for an air conditioner having a virus removal function, comprising a heat treatment step (S12) of heat-treating the mixture of the titanium oxide material and the tungsten oxide material at 400 to 600 ° C.
  7. 제5항에 있어서,According to claim 5,
    상기 광촉매 소재 코팅 단계(S20)는,In the photocatalyst material coating step (S20),
    상기 열교환핀(110)에 무기질 프라이머를 도포하는 프라이머 도포 단계(S21);a primer application step (S21) of applying an inorganic primer to the heat exchange fins 110;
    상기 광촉매 소재에 무기질 바인더를 혼합하여 졸(sol) 상태의 광촉매 소재를 제작하는 광촉매 졸 제작 단계(S22); 및a photocatalyst sol preparation step (S22) of preparing a photocatalyst material in a sol state by mixing an inorganic binder with the photocatalyst material; and
    상기 광촉매 졸을 상기 열교환핀(110)에 코팅하는 광촉매 졸 코팅 단계(S23);를 포함하여 이루어진 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 제조방법.A photocatalyst sol coating step (S23) of coating the photocatalyst sol on the heat exchange pin 110; manufacturing method of a heat exchanger for an air conditioner having a virus removal function, characterized in that it is made.
  8. 제7항에 있어서,According to claim 7,
    상기 무기질 바인더는, 규산나트륨 20 내지 30중량%, 규산칼륨 5 내지 15중량%, 물 50 내지 70중량% 및 분산제 3 내지 7중량%를 250 내지 350℃의 온도에서 중합반응시켜 제작된 것을 특징으로 하는 바이러스 제거기능을 갖는 공기조화장치용 열교환기의 제조방법.The inorganic binder is produced by polymerization of 20 to 30% by weight of sodium silicate, 5 to 15% by weight of potassium silicate, 50 to 70% by weight of water and 3 to 7% by weight of a dispersant at a temperature of 250 to 350 ° C. A method for manufacturing a heat exchanger for an air conditioner having a virus removal function.
PCT/KR2021/015377 2021-10-28 2021-10-29 Heat exchanger for air conditioner having virus removal function and manufacturing method therefor WO2023074959A1 (en)

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JP2005300110A (en) * 2004-04-15 2005-10-27 Daikin Ind Ltd Indoor unit for air conditioner
JP2008164238A (en) * 2006-12-28 2008-07-17 Sumitomo Light Metal Ind Ltd Aluminum fin material for heat exchanger, and heat exchanger using it
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JP2017512294A (en) * 2014-02-26 2017-05-18 エルジー エレクトロニクス インコーポレイティド Home appliances equipped with a photocatalytic device for visible light
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KR102307194B1 (en) * 2019-12-23 2021-09-30 주식회사 유웰 Automotive air cleaner using photocatalyst filter acting in visible light range

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JP2005300110A (en) * 2004-04-15 2005-10-27 Daikin Ind Ltd Indoor unit for air conditioner
JP2008164238A (en) * 2006-12-28 2008-07-17 Sumitomo Light Metal Ind Ltd Aluminum fin material for heat exchanger, and heat exchanger using it
KR101146899B1 (en) * 2010-05-24 2012-05-15 인하대학교 산학협력단 Photocatalyst having titanium dioxide and a metal tungsten oxide junction structure and preparation method thereof
JP2017512294A (en) * 2014-02-26 2017-05-18 エルジー エレクトロニクス インコーポレイティド Home appliances equipped with a photocatalytic device for visible light
KR101973990B1 (en) * 2018-01-16 2019-04-30 주식회사 임금님명품침대가구 Method for manufacturing pad for brassiere comprising germanium and pad for brassiere manufactured by the same
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KR102307194B1 (en) * 2019-12-23 2021-09-30 주식회사 유웰 Automotive air cleaner using photocatalyst filter acting in visible light range

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