Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/32—Component parts, details or accessories; Auxiliary operations
  • B29C43/34—Feeding the material to the mould or the compression means
• • 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
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/86—Catalytic processes
• • 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
  • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
  • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
  • B01J19/122—Incoherent waves
  • B01J19/123—Ultraviolet light
• • 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
  • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J19/24—Stationary reactors without moving elements inside
  • B01J19/248—Reactors comprising multiple separated flow channels
• • 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
  • B01J35/00—Catalysts, in general, characterised by their form or physical properties
  • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• • 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
  • B01J35/00—Catalysts, in general, characterised by their form or physical properties
  • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
  • B01J35/39—Photocatalytic properties
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/80—Type of catalytic reaction
  • B01D2255/802—Photocatalytic
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2259/00—Type of treatment
  • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
  • B01D2259/804—UV light
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/32—Component parts, details or accessories; Auxiliary operations
  • B29C43/34—Feeding the material to the mould or the compression means
  • B29C2043/3488—Feeding the material to the mould or the compression means uniformly distributed into the mould

Definitions

• This invention generally relates to air-cleaning units which use a photocatalyst and to air-cleaning systems having such air-cleaning units. More particularly, the invention is for an air-cleaning unit that completely decomposes harmful substances in the air to harmless substances through photochemical reaction using a photocatalyst, and an air-cleaning system with such air-cleaning units.
• a photochemical reaction using a photocatalyst enables complete decomposition of various kinds of harmful substances in the air and aqueous solutions, to harmless substances in a normal temperature and pressure environment, and sterilization of microbes in the air and aqueous solutions.
• a photochemical reaction using a photocatalyst does not create the problem of generating other harmful byproducts as only a light source is required for reaction, and the photocatalyst can be used substantially permanently.
• TiO 2 used as a photocatalyst is harmless to humans and is generally used as a white dye for toothpaste, underwear, paper, etc. The advantage of using TiO 2 is that it is already widely used in general life.
• FIG. 17 is a schematic illustration of the components for an air-cleaner which are arrayed within a conventional air-cleaning system. As shown in Fig.
• the system comprises antibacterial filter 101 for completely removing harmful substances in the air such as dust, dust collector 102 for removing noxious gas and infinitesimal dust that pass though antibacterial filter 101, photocatalyst filter 104 applied with titanium oxide for sterilizing various bacteria and mold in the room and for removing unpleasant odors, and ultraviolet lamp device 106 for generating ozone for its own sterilization and deodorization, as a light source for generating a photochemical reaction for photocatalyst filter 104.
• Fig. 18 illustrates a state in which ultraviolet rays generated from ultraviolet lamp device 106 is irradiated to a photocatalyst filter shown in Fig. 17.
• Photocatalyst filter 104 is integrally coupled with an electronic dust collector (not shown) and is comprised of net structure 104a that consists of a plurality of infinitesimal lattices, and frame 104b that supports net structure 104 in a predetermined configuration.
• Net structure 104a is made with metal materials, and titanium oxide is applied to the surface thereof.
• Ultraviolet lamp device 106 installed on one rear side portion of photocatalyst filter 104, is comprised of lamp 106a and a housing 106b that supports lamp 106a while wrapping around the rear side portion of lamp 106.
• lamp 106a irradiates ultraviolet rays toward photocatalyst filter 104 and generates ozone.
• lamp 106a is inclined toward the horizontal side direction of photocatalyst filter 104 at a rear side portion of photocatalyst filter 104.
• a portion of photocatalyst filter 104 away from lamp 106a is not sufficiently irradiated with ultraviolet rays. Therefore, photochemical reaction is rarely generated in the portion of photocatalyst filter 104 away from lamp 106a, which results in inadequate purification of the polluted air passing through that portion.
• ultraviolet lamp system 106 may be installed on either rear sides of photocatalyst filter 104, as shown in Fig. 19.
• a technical constitution also has a problem in that the middle area of photocatalyst filter 104 has a relatively lower degree of irradiation with ultraviolet rays than the side areas.
• ultraviolet lamp device 106 is positioned at the back of photocatalyst filter 104, which may cause a problem in which some of the ozone generated from lamp 106a along with the air passed through photocatalyst filter 104 is exhausted to outside air, which may be harmful to humans.
• the invention provides an air-cleaning unit comprising a casing forming a plurality of air outlet passages and air inlet passages; at least one ultraviolet light source arrayed within the casing; and at least one transparent member disposed along with the light source within the casing, the transparent member having at least one surface to which a photocatalyst film applies, wherein a photochemical reaction is generated when ultraviolet rays generated from the light source radiate to the photocatalyst film.
• the transparent member is a pipe having both ends opened, and at least one surface of the inner and outer surfaces of the pipe is applied by the photocatalyst film.
• the light source can be disposed within the pipe.
• the pipe can be disposed around the light source and has a length shorter than that of the light source.
• the pipe can be disposed between the light sources so as to communicate the air inlet passage and the air outlet passage.
• the pipe is long and is disposed in parallel with the light sources.
• the invention provides an air-cleaning system comprising a case including air flow inlet and discharging it through the air flow outlet, wherein at least one air- cleaning unit is disposed within the case.
• the air-cleaning units are in parallel with each other and adjacent to the air flow inlet and the air flow outlet.
• Fig. 1 is a perspective view into the interior of a first embodiment of the air- cleaning unit according to the present invention.
• Fig. 2 is an assembling view of the air-cleaning unit.
• Fig. 3 is a plan view of the air-cleaning unit with its upper plate removed.
• Fig. 4 is a sectional view taken along line A-A in Fig. 3.
• Fig. 5 is a plan view of a second embodiment of the air-cleaning unit according to the present invention.
• Fig. 6 is a sectional view taken along line B-B in Fig. 5.
• Fig. 7 is a plan view of a third embodiment of the air-cleaning unit according to the present invention.
• Fig. 8 is a sectional view taken along line C-C in Fig. 7.
• Fig. 9 is a plan view of a fourth embodiment of the air-cleaning unit according to the present invention.
• Fig. 10 is a sectional view taken along line D-D in Fig. 9.
• Fig. 11 is a schematic view of a first embodiment of the present air-cleaning system wherein air-cleaning units according to the present invention are mounted.
• Fig. 12 is a schematic view of a second embodiment of the air-cleaning system as in
• Fig. 13 is a schematic view of a third embodiment of the air-cleaning system according to the present invention, wherein an ozone-generating lamp is additionally installed in the air-cleaning system of Fig. 11.
• Fig. 14 is a schematic view of a fourth embodiment of the air-cleaning system according to the present invention, wherein active carbon absorbent member is additionally installed on the air-cleaning system of Fig. 11.
• Fig. 15 is a schematic view of a fifth embodiment of the air-cleaning system according to the present invention, wherein the ozone-generating lamp and the active carbon absorbent member are additionally installed on the air-cleaning system of Fig. 11
• Fig. 16 is a schematic view of a sixth embodiment of the air-cleaning system according to the present invention, wherein a dust collector is additionally installed in the air-cleaning system of Fig. 15.
• Fig. 17 is an exploded perspective view illustrating a prior art array of constitutional components of a conventional air-cleaning system.
• Fig. 18 shows the spatial disposition and relationship between the photocatalyst filter and ultraviolet lamp device illustrated in Fig. 17.
• Fig. 19 illustrates another example such as depicted in Fig. 18.
• Fig. 1 illustrates a first embodiment of the air-cleaning unit according to the present invention.
• the air-cleaning unit comprises a box-shaped casing that has body 1 which consists of a lower plate and vertical side walls around the edges of the lower plate, and upper plate 3, which opens and closes the upper opening of body 1, a plurality of ultraviolet lamps 5 that are separately disposed with predetermined space within body 1, and a transparent member 7 within which a part of ultraviolet lamp 5 is positioned.
• a plurality of air inlet passages la are provided on the lower plate of body 1. Air inlet passages la are disposed so as to be opposed to air outlet passages 3a provided on upper plate 3.
• reflection member 2 such as an aluminum foil or a mirror, can be affixed on the inner surface of upper plate 3 (See Fig. 4). Reflection member 2 reflects ultraviolet rays emitted from ultraviolet lamp 5 so that it will expand the area irradiated with ultraviolet rays in body 1.
• Partitions (9a, 9b) divide the interior of body 1 into a light source portion in which ultraviolet lamp 5 and transparent member 7 are positioned, and a wiring portion in which electric wires connecting ultraviolet lamps 5 on either side of the light source portion and a stabilized power supplies 11a and lib circuitry connected with the wires are positioned.
• light emitting diodes 13 are installed on a longer side wall of body 1 so that the on /off status of ultraviolet lamp 5 can be distinguish from outside.
• ultraviolet lamps 5 are installed, and two pairs of light emitting diodes 13 illustrated on either side of the drawing are electrically connected to four ultraviolet lamps 5, respectively.
• light emitting diode 13 connected the one of ultraviolet lamps 5 goes off as well. Thus, time to replace the malfunctioned ultraviolet lamp 5 can be informed.
• ultraviolet lamps 5 are disposed in parallel with the longer sides of body 1, and both ends of ultraviolet lamp 5 are inserted into holes 15a and 15b that are formed in opposite to partitions 9a and 9b, respectively.
• rubber rings 17 are applied to both ends of ultraviolet lamp 5 that are passed tlirough holes 15a and 15b of partitions 9a and 9b, so that ultraviolet lamp 5 is strongly supported within holes 15a and 15b of partitions 9a and 9b without moving back and forth.
• ultraviolet lamp 5 used in the invention has a wavelength betweenlOO run to 400nm; in particular, 254nm or 365nm is more preferable.
• transparent member 7 be a pipe having both ends opened and consists of a material that is light permeable and not transformed even at over exothermic temperature conditions of the lamp, such as quartz glass, Pyrex glass, or light permeable synthetic resins.
• Transparent member 7 illustrated in Fig. 1 is a large glass tube having both ends opened, which has a interior diameter as large enough to accommodate ultraviolet lamp 5 and a length shorter than ultraviolet lamp 5 so as not to completely cover ultraviolet lamp 5. When necessary, the length of transparent member 7 can be adjusted.
• a photocatalyst is applied to at least one surface of inner and outer surfaces of transparent member 7.
• TiO 2 e.g. a photocatalyst generated by doping metallic ions such as Cu, Fe, Pt, Zn to TiO 2
• TiO 2 mixed with other metallic oxide e.g. a photocatalyst generated by physically or chemically combining metallic oxide such as Sno2 with TiO 2 .
• Transparent member 7 is installed so as to be coaxial with ultraviolet lamp 5.
• both ends of transparent member 7 are supported by supporting members 19.
• Supporting member 9 is comprised of semicircular supporting plate 19a for wrapping around a part of the outer surface of transparent member 1, and fixing portion 19b for fixing supporting plate 19a on the lower plate of body 1.
• highly elastic metal or plastic capable of pressing the outer surface of transparent member 7 is preferable.
• rubber ring (not shown) can be used for a support.
• Fig. 2 is an assembling view of the air-cleaning unit of Fig. 1. As shown in Fig. 2, body 1 and upper plate 3 are assembled by engagement of latch bar 6a of locking portion 6 and hook portion 4 that are correspondingly provided on the side portions of body 1 and upper plate 3, respectively.
• Outwardly extended handle 8 is provided on the middle portion of the sidewall of body 1. Handle 8 serves for easy withdrawal of the air-cleaning unit from an air- cleaning system described below when the air-cleaning unit is provided within the air- cleaning system like a drawer. Operation of the air-cleaning unit of the invention will be described below.
• Fig. 2 and Fig. 4 respectively illustrate airflow passages Fl and F2, through which polluted air drawn in from the outside is discharged after passing through an air- cleaning unit, when the air-cleaning unit is provided in the air-cleaning system described below.
• air passage Fl outside polluted air is drawn in by a fan (See Fig. 11) and passes through air inlet passage la located on one side portion of the lower plate of body 1 , and then flows into the interior of body 1. Inflowing polluted air passes by inner and outer side surfaces of transparent member 7 applied with a photocatalyst, while flowing along air flow passage Fl (See Fig. 11).
• air passage F2 outside polluted air is drawn in by a fan (See Fig.
• First and second photocatalyst films 7a and 7b irradiated with ultraviolet rays generates a photocatalyst reaction that induces an oxidation-reduction reaction of the harmful substances mixed with polluted air.
• the harmful substances are decomposed into harmless substances.
• the harmless substances are flowed along airflow passages Fl and F2 with the air and then are discharged outside through air outlet passage 3 a, provided on the upper plate 3.
• air-cleaning unit of the first embodiment of the invention no matter what portion of transparent member 7 is applied with photocatalyst film, ultraviolet light can penetrate transparent member 7 and irradiate the photocatalyst film. Therefore, a photocatalyst reaction can be expected with respect to all the area on which a photocatalyst is applied.
• Figs. 5 to 10 illustrate a second to fourth embodiments according to the invention.
• Figs. 5 and 6 illustrate the second embodiment of the air-cleaning unit according to the invention.
• the light source portion of body 1 is filled with small glass pipes 21 that have a short length and small diameter, unlike the large glass pipe shown in Fig. 1 as transparent member 7.
• Small glass pipe 21 can have a length of about 10 mm and a diameter of about 8 mm. These dimensions will provide easy workability and suitable strength. However, the length and diameter are not limited by such numerical values and can be lower or higher than those values.
• Inner and outer surfaces of small glass pipe 21 are applied with a photocatalyst.
• the pipes are filled in the light source portion of body 1 so as to surround ultraviolet lamp 5. When ultraviolet lamp 5 is turned on, ultraviolet rays are generated from ultraviolet lamp 5.
• the ultraviolet rays penetrate a plurality of small glass pipes 21 that are randomly disposed around ultraviolet lamp 5, and successively irradiates the photocatalyst film applied on inner and outer surfaces of small glass pipe 21.
• the purification process to the polluted air flowed in body 1 by a photocatalyst film applied on the inner and outer surfaces of small glass pipe 21 and ultraviolet lamp 5 is the same as the process described in the first embodiment.
• Such a plurality of small glass pipes 21 of the second embodiment have the advantage of a relatively high level of efficiency in disposing the polluted air because it has broader application area of photocatalyst film than the large glass pipe of the first embodiment.
• the air-cleaning unit of the present embodiment can create noise because small glass pipes 21 provided therein are randomly disposed irrespective of the airflow direction. Therefore, an air-cleaning system provided with the air-cleaning unit of the present embodiment is mainly for use in a factory rather than at home because a factory needs a high level of air purification efficiency and can allow for some noise. By enlarging the outer diameter and extending the length of small glass pipe 21 provided in the air-cleaning unit of the embodiment, the air can be flowed smoothly. This smooth airflow results in a reduction of noise.
• Figs. 7 and 8 illustrate the third embodiment of the air-cleaning unit according to the invention, wherein another example of the transparent member of the invention is shown.
• the transparent member is glass pipe 23 which is vertically disposed between ultraviolet lamps 5 and has a photocatalyst applied to its inner and outer surfaces.
• Vertical glass pipe 23 has a length between the inner side surfaces of lower and upper plates 3 of body 1 so that its both ends make contact with the surfaces, respectively.
• a cavity of vertical glass pipe 23 is disposed so as to communicate with air inlet passage la provided on the lower plate and air outlet passage 3a provided on the upper plate 3 of body 1. Polluted air passes by the photocatalyst film applied to the inner and outer surfaces of vertical glass pipe 23 from air inlet passage la of body 1, and is discharged through air outlet passage 3a of upper plate 3.
• the area applied with a photocatalyst is relatively smaller than that of the above-mentioned second embodiment. This results in a slightly lower level of air purification efficiency than that of second embodiment.
• the smooth air flow from air inlet passage la to air outlet passage 3a tlirough the cavity of glass pipe 23 results in the reduction of noise.
• Fig. 9 and Fig. 10 illustrate the fourth embodiment of the air-cleaning unit according to the invention, wherein another embodiment of a transparent member of the invention is shown.
• the transparent member is long pipe 25, which is disposed in parallel with the longitudinal direction of ultraviolet lamp 5 around ultraviolet lamp 5, and has a photocatalyst applied to its inner and outer surfaces.
• Long glass pipe 25 has a length shorter than ultraviolet lamp 5, such as the large glass pipe shown in Fig. 1, and has a diameter smaller than that of the large glass pipe.
• These long glass pipes 25 are pressed by elastic member 26 that is affixed to the inner surface of upper plate 3 and are strongly supported within body 1 without moving, as shown in Fig. 10.
• Polluted air drawn in through air inlet passage la of body 1 is purified by an oxidation-reduction reaction with a photocatalyst while flowing along the longitudinal direction of long glass pipe 25. Purified air is then discharged through the air outlet passage 3a of upper plate 3.
• the constitution of airflow passage F2 of the first embodiment, wherein the air flows up and down, can be applied to the present embodiment.
• the air-cleaning unit of the above-described fourth embodiment meets with more airflow resistance than that of the first and third embodiments, which results in the generation of more noise.
• the air purification efficiency relatively increases.
• small glass pipe 21 of the second embodiment and/or vertical glass pipe 23 of the third embodiment can be considered as being the same as the first embodiment of the air-cleaning unit according to the invention.
• Small glass pipes 21 and/or vertical glass pipes 23 can fill in the light source portion of body 1 of the first embodiment shown in Fig.3, excluding the space occupied by ultraviolet lamp 5 and transparent member 7.
• small glass pipes 21 and/or vertical glass pipes 23 can fill in the light source portion of body 1 of the fourth embodiment shown in Fig. 9, excluding the space occupied with long glass pipes.
• the air purification_efficiency may increase as a result of an expansion of the photocatalyst reaction area of the air-cleaning unit of the first and fourth embodiments.
• reflection member 2 and elasticity member 26 that are disclosed in the first and fourth embodiments, respectively, can be selectively or concurrently applied to all the embodiments.
• Air-cleaning system 50 comprises case 51, a plurality of air-cleaning units 53 provided within case 51 like drawers, and fan 55 for drawing in outside polluted air, passing the inflowing polluted air through air-cleaning unit 53, and then discharging the purified air outside. It is possible for this system to consist of only one air-cleaning unit 53.
• air flow inlet 57 is provided for drawing outside polluted air and a filter 58 used conventionally is installed on air flow inlet 57.
• partition walls 59 across the interior of case 51 are layered by a predetermined space so as to accommodate air-cleaning units 53 in a drawer-like manner. Openings 59a are formed on each partition wall 59. As an example, opening 59a is positioned alternately on the right side or the left side of each partition wall 59. This provides airflow passage Fl in a zigzag manner as shown in Fig. 11.
• Fan 55 is an induced draft fan, which is provided on upper inner side of case 51 so as to discharge the air through air flow outlet 61 provided on the upper plate of case 51.
• air-cleaning unit 53 is adjacent to air inlet opening 57 and air outlet opening 61.
• the polluted air sucked into air flow inlet 57 by the sucking force of fan 55 is repeatedly purified several times in the process of passing through a plurality of air-cleaning units 53 and openings 59 that are communicated in a zigzag shape, and then is discharged through air flow outlet 61.
• air-cleaning unit 53 applied to the present embodiment either the air-cleaning unit in Fig. 1 having a large glass pipe, or the air-cleaning unit having long glass pipe 25 is preferable, since the pipes for transparent members 7 are disposed to the widthwise direction of the air-cleaning unit so as to correspond to the zigzag airflow direction.
• Fig. 12 illustrates a second embodiment of the air-cleaning unit according to the invention.
• the second embodiment is different from the first embodiment in Fig. 11 in that openings 59b are formed on the middle portion of cross wall 59, and face each other in a longitudinal direction. That is, air flow passage F2 in the present embodiment is formed in a straight line, unlike the zigzag-shaped air passage Fl of the first embodiment. Therefore, for air-cleaning unit 54 mounted on air-cleaning system 60 of the present embodiment, the air-cleaning unit in Fig. 7 having vertical glass pipes 25 is preferable. However, air-cleaning units of the other embodiments also can be applied.
• FIG. 13 is an illustration of the third embodiment of the air-cleaning unit according to the invention, wherein ozone-generating lamp 63 is additionally provided on air- cleaning system 50 of Fig. 11.
• ozone-generating lamp 63 installed in lower space portion of case 51 is positioned between air flow inlet 51 and air-cleaning unit 53 in the lowest position. That is, polluted air flowed in through inlet opening 57 and filter 58 is purified by means of a chemical reaction between a photocatalyst and ozone while being passed through a plurality of air-cleaning units 53 along with the ozone generated from ozone generating lamp 63.
• air-cleaning unit 70 of the present embodiment will provide a higher level of air purification efficiency than that of air-cleaning system 50 of the first embodiment.
• ozone generated from ozone generating lamp 63 is all consumed while being passed through air-cleaning unit 53 in order to increase the capability of removing harmful substances by means of a photocatalyst.
• the present embodiment provides the effect of totally preventing any leakage of ozone that was usual in the conventional air-cleaning system.
• Fig. 14 is illustrates the fourth embodiment of the air-cleaning system according to the invention, wherein active carbon absorbent 65 is additionally provided on the air- cleaning system 50 of Fig. 11.
• active carbon absorbent 65 is installed above air-cleaning unit 53 within case 51.
• the active carbon absorbent 65 is installed on the upper portion of case 80 in the present embodiment, it can be installed on the lower portion of case 80 as well so as to increase the air purification efficiency.
• the active carbon absorbent serves to absorb unpleasant odors and volatile organic compounds in the air. According to such a constitution, polluted air sucked into air flow inlet 57 and filter 58 is repeatedly purified while being passed through a plurality of air-cleaning units 53 and active carbon absorbent 65. Therefore, it is expected that air-cleaning unit 80 of the present embodiment will provide a higher level of air purification efficiency than that of air-cleaning system 50 of the first embodiment.
• Fig. 15 is an illustration of the fifth embodiment of the air-cleaning system according to the invention, wherein ozone-generating lamp 53 and active carbon absorbent 65 are additionally provided on the air-cleaning system of Fig. 11.
• ozone-generating lamp 53 is installed beneath air-cleaning unit 53 and active carbon absorbent 65 is installed above air-cleaning unit 53.
• polluted air drawn in through inlet opening 57 and filter 58 is purified by means of a chemical reaction between photocatalyst and ozone, while being passed through a plurality of air-cleaning units 53 along with ozone generated from ozone- generating lamp 63.
• the polluted air is then purified by being passed through active carbon absorbent 65. Therefore, it is expected that air-cleaning unit 90 of present embodiment will provide a higher level of air purification efficiency than the air- cleaning systems of the first to fourth embodiments mentioned above.
• FIG. 16 is an illustration of the sixth embodiment of the air-cleaning system according to the invention, wherein dust collector 67 is additionally provided on the air- cleaning system of Fig. 15.
• dust collector 67 is installed between inlet opening57 of case 51 and ozone generating lamp 53. That is, dust in the polluted air drawn in through inlet opening 57 and filter 58 is filtered out through dust collector 67, and the polluted air is repeatedly purified by being passed through ozone generating lamp 53, air-cleaning unit 53, and active carbon absorbent 65. Therefore, it is expected that air-cleaning unit 100 of the present embodiment will provide a higher level of air purification efficiency than the air-cleaning systems of the first to fifth embodiments mentioned above.

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• Organic Chemistry (AREA)
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• Toxicology (AREA)
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• Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

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• 2000
  • 2000-04-10 KR KR1020000018704A patent/KR20010090648A/ko not_active Application Discontinuation
• 2001
  • 2001-04-10 WO PCT/KR2001/000596 patent/WO2001076726A1/en active Application Filing

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