Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L9/00—Disinfection, sterilisation or deodorisation of air
  • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
• • 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
  • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
• • 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
  • F24F8/192—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 electrical means, e.g. by applying electrostatic fields or high voltages
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/20—Metals or compounds thereof
  • B01D2255/207—Transition metals
  • B01D2255/20707—Titanium
• • 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
  • B01D2257/00—Components to be removed
  • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
  • B01D2257/702—Hydrocarbons
  • B01D2257/7027—Aromatic hydrocarbons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
  • B01D2257/708—Volatile organic compounds V.O.C.'s
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/91—Bacteria; Microorganisms
• • 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
  • 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
• • 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 gaseous fluid treatment devices, and more particularly to air purification devices for air conditioning systems.
• Air conditioning system means any device that treats the air to vary one of its physical properties such as an air conditioning unit, a central air or a mechanically controlled fan.
• air conditioning systems equipped with air purification devices placed in their air circulation circuit either from the outside or recycled from the system.
• These devices may comprise, in particular, air treatment means by photocatalysis and / or plasma chemistry or any adsorbent filtering units, hybrid filters or specific gas filters.
• air-purifying air-purifying devices for filtering ambient air from a location. These air purifiers connect to an external power source and rely on an air intake system associated with one or more filters in combination.
• these devices require air suction / propulsion means of the motor-fan unit type in order to suck the air and circulate it in the air distribution duct through the filter (s) of the device. At each passage in the device, the air is rid of these undesirable particles.
• the invention aims to solve the problems mentioned above.
• a last object of the present invention is to provide an air purification device with a limited cost and easy installation.
• an air purification device comprising an air inlet for the passage of polluted air, a filter medium to be traversed by the polluted air to purify and an outlet of air for the passage of purified air remarkable in that it is shaped to directly receive a flow of air out of an air conditioning system so that the air flow of the air intake air to the filter medium and then to the air outlet is ensured.
• the present invention eliminates any air suction / propulsion system integrated in the air purification device for circulating the air that it is desired to purify through the device.
• the device may comprise one or more of the following features, taken in isolation or in combination technically possible:
• the air inlet which is exposed to the air conditioning system, comprises an opening adapted to receive the flow of air exiting from said system;
• - he is autonomously energetic; - It comprises an energy accumulator and means for producing electrical energy from renewable energy to maintain charge and recharge said accumulator;
• it comprises means for producing electrical energy from wind energy produced by the circulating air flow; it comprises means for producing electrical energy from photovoltaic energy;
• the means for producing electrical energy from photovoltaic energy comprise a flexible panel of photovoltaic cells intended to capture the light energy to transform it into electrical energy;
• the filtering medium comprises a photocatalyst cell having a photocatalytic filter in the form of a support coated with a photocatalyst agent intended to be irradiated by a light source in order to trap chemical and / or microbiological pollutants;
• the filter media comprises a prefilter for trapping physical pollutants disposed upstream of the photocatalytic cell;
• FIG. 1 shows a perspective view of an air purification device according to one embodiment of the invention
• FIG. 2 shows a side sectional view of the air purification device 1 of Figure 1;
• FIG. 3 represents an exploded view of the air purification device of FIG. 1.
• FIGS. 1 to 3 show the various constituent parts of an air purification device 10 according to the present invention.
• This purification device 10 is in the form of a chamber 1 1 which comprises an air inlet 12 through or licking a wall of said chamber 1 1 through which the mixture of air and possible pollutants penetrates inside of the device 10.
• the enclosure 1 1 contains a filter media 30 through which a forced circulation of the air is organized to purify it, this medium 30 being illuminated by a light source 40 fed by supply means
• This purification device 10 is intended to be fixed by appropriate fastening means 60, described below in connection with FIG. 1, on a packaging system. of air 20.
• the air purification device 10 is designed to directly receive the flow of air leaving the air conditioning system 20 so that the air circulation of the air inlet 12 to the filter medium 30 and then to the air outlet 14 of the device 10 is ensured.
• This air conditioning flow exiting the air conditioning system 20 is represented by the arrow A. It is necessary to use the air suction / propulsion necessary to establish the forced air circulation. through the device of purification 10 is only created by exploiting the conditioned air flow A delivered by the air conditioning system 20 at the outlet air outlet 21 of the latter without external kinetic input brought to this air flow A flowing. Indeed, it is the speed of the airflow A leaving the air conditioning system 20 which induces the flow of air through the purification device 10.
• the conditioned air flow having a particular kinematics is directly diffused through the purification device 10 and to the filter medium 30 to be purified.
• the air inlet 12 of the air purification device 10 arranged opposite the air outlet mouth 21 of the air conditioning system 20, comprises an opening adapted to that of said mouth 21.
• the air inlet 12 of the air purification device 10 has air distribution flaps 15 complementary to the air distribution flaps 22 present on the air outlet mouth 21 of the air conditioning system. 20 so that the flow of air A leaving this system is oriented and channeled to the air purification device 10.
• the present invention eliminates any air suction / propulsion type fan motor unit integrated in the air purification device 10 to circulate the air that is desired to purify. Moreover, as illustrated more precisely in FIGS. 2 and 3, in one embodiment of the present invention, the filter medium 30 is distributed in a first 31 and a second 32 filter modules arranged successively on the air path to purify.
• the first filter module 31 disposed in the upstream zone of the device 10 can be adapted to a desired or required filtration characteristic.
• the first filter module 31 comprises a pre-filter for trapping physical pollutants such as dust or particles.
• This pre-filter may be any adsorbent.
• An example is an active carbon filter or a high performance HEPA type filter.
• the first filter module 31 can be formed by a combination of several different filters so that various substances can be removed from the air passing therethrough.
• the first filter module 31 could comprise an activated carbon filter disposed downstream of a particulate filter.
• the pre-filter has a thickness of the order of 50 mm.
• the second filter module 32 comprises a photocatalyst cell 70 having a photocatalytic filter in the form of a fibrous support coated with a photocatalyst agent.
• the second filtering module 32 by photocatalysis is disposed downstream of the first filtering module 31 so that intermediate products that can form in the first filter module 31 can be eliminated.
• Photocatalysis occurs on the surface of the photocatalyst agent, the latter being intended to adsorb and destroy the pollutant gas molecules that pass through the purification device 10 by virtue of radiation reduction reactions under the effect of a radiation produced by the light source 40.
• this light source 40 is interposed between the first 31 and the second 32 filtration modules.
• the photocatalytic filter In a non-limiting example of the invention, it is placed at a distance of about 20 mm from the photocatalytic filter.
• the photocatalyst agent is TiO 2 titanium dioxide.
• catalysts could be used in the context of the present invention, such as, in particular, other metal oxides, alkaline earth oxides, actinide oxides or rare earth oxides.
• the support of the photocatalyst agent is a fibrous medium transparent to the radiation used.
• the light source 40 is able to emit ultraviolet radiation. It may thus include, without limitation, one or more tubular or flat ultraviolet lamps or a plurality of light emitting diodes.
• the light source 40 emits in wavelengths of the order of 254 nanometers.
• the light source is capable of emitting an ultraviolet power of 20 mW / cm 2 of irradiated surface.
• the electroluminescent lamps or diodes spend little energy. For example, their consumption is of the order of 2OW.
• the flow of air A leaving the air outlet mouth 21 of the air conditioning system 20 and passing through the purification device 10 becomes free of the chemical and microbiological pollutants that have accumulated. at the level of the air conditioning system 20.
• Photocatalysis removes all components that are not treated by the air conditioning system such as volatile organic compounds, odors, ozone, bacteria and mold. Moreover, the light source 40 is powered by a power accumulator 50 placed upstream of the first filter module 31.
• the air purification device 10 is autonomously energetic.
• the energy accumulator 50 is maintained in charge and rechargeable by means of producing electrical energy 90 from renewable energy integrated in the device 10.
• the air purification device 10 comprises means for producing electrical energy 91 from wind energy.
• a series of wind turbines 91 is placed upstream of the first filter module 31 at the level of the energy accumulator 50.
• the wind energy is produced by the action of the force of the airflow A exiting the air conditioning system 20 which rotates the blades of the wind turbines 91.
• the blades of each wind turbine 91 rotate an alternator (not shown) which converts the mechanical rotation movement into electrical energy directly used by the energy accumulator 50.
• the power supplied by wind turbine is defined by the following relation (1):
• V the speed of the air flow intercepted.
• These means comprise means for capturing the photovoltaic energy and transforming it into electrical energy stored in the energy accumulator 50, which is intended to supply the energy required for the light source 40.
• the light energy is collected and, more particularly, solar or artificial, using a panel of photovoltaic cells 92 whose production of electrical energy is proportional to the sun.
• this panel of photovoltaic cells 92 is placed on the outer cover 13 of the air purification device 10 downstream of the air outlet 14, the cover 13 being the part most exposed to solar radiation.
• this panel 92 is a flexible high performance panel and thin. This offers the advantage of being able to conform it according to the profile of the air purification device 10.
• the panel 92 has a curved profile adapted to that of the outer cover 13 of the device 10.
• the stream of purified air having passed through the filter media 30 is deflected on the cover 13 provided with the panel 92 to move towards the side faces of the enclosure 11 to be diffused into the room.
• embodiments may provide an air outlet 14 orientable downwardly of the enclosure 11 in the form of the outer cover 13 of the device 10 supporting the photovoltaic cell panel 92.
• an air outlet 14 orientable downwardly of the enclosure 11 in the form of the outer cover 13 of the device 10 supporting the photovoltaic cell panel 92.
• the device 10 is energy efficient.
• an alternative embodiment can provide for adding a motor-fan unit to reinforce the operation of the conditioned air flow A delivered by the conditioning system. air 20 to establish forced air circulation through the purification device 10.
• This group would include one or more series of fans placed on one or more lateral faces of the device 10 and powered by the aforementioned accumulator 50 to assist in the mixing of the air to be purified.
• the air purification device 10 comprises fastening means 60 that are removable to the air conditioning system 20 so that it can be fixed in a simple manner and then be transportable. to another air conditioning system 20 if necessary.
• the fixing means 60 are adapted to maintain and immobilize the air purification device 10 facing the air outlet mouth 21 of the air conditioning system 20 so that the air flow A leaving the system 20 is directed and channeled into the chamber 11 of the device 10.
• the fixing means 60 of the purification device 10 can be of any type allowing a removable attachment.
• the fastening means 60 of the device 10 consist of a series of steerable flexible arms 61 housed on the lateral external faces of the enclosure 11 of the device. These arms 61 comprise at their free end a system of fasteners 62 such as suction cups, clips or clamps that can be fixed on the lateral faces of the air conditioning system 20.
• the fastening means 60 may comprise means of raking intended to cooperate with corresponding latching means or openings provided on the air conditioning system 20.
• They may also comprise a series of spring arms clinging to the inner walls of the air conditioning system 20.
• it is thus possible to fix the air purification device 10 on any type of packaging system. air 20.
• the operation of the air purification device 10 according to the present invention is as follows.
• the flow of air A leaving the air conditioning system 20 is directed and channeled towards the air inlet 12 of the air purification device 10. According to the direction of circulation of the air circulating inside. of the device 10, it then rotates the blades of the wind turbines 91, thus promoting the production of electrical energy to be stored in the accumulator 50 of the device 10.
• the air flow A is then propelled towards the first filter module 31.
• the solid pollutants present in the air flow A are then fixed by this first module 31.
• the pre-filtered air stream A then passes through the photocatalytic cell 70.
• the light source 40 supplied with electricity via the accumulator 50 charged by the wind turbines 91 and the photovoltaic cell panel 92 emits an ultraviolet light beam in the direction of the photocatalytic filter 70.
• the ultraviolet radiation-irradiated photosensitive agent then reacts with the pollutants present in the pre-filtered air stream A, and, by catalytic reaction with the ultraviolet rays, permanently eliminates the pollutants fixed on the pre-filter 31 and those which cross it. This is reinforced by the light source 40 germicidal effect that sterilizes the pre-filtered airflow A.
• the stream of air A thus sterilized goes to the air outlet 14 of the air purification device 10 to be evacuated.
• a portable device that does not require the integration of an air intake system or an external power source while providing effective purification. conditioned indoor air. It will also appreciate a self-contained, energetic, simple design and installation device that can be used by anyone in any living environment where indoor air purification is desired.

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• Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Public Health (AREA)
• Biomedical Technology (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Mechanical Engineering (AREA)
• Veterinary Medicine (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)
• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
• Exhaust Gas Treatment By Means Of Catalyst (AREA)
• Catalysts (AREA)

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• 2009
  • 2009-05-14 FR FR0953179A patent/FR2945450B1/fr active Active
• 2010
  • 2010-05-14 EP EP10728761A patent/EP2429596A1/de not_active Withdrawn
  • 2010-05-14 WO PCT/FR2010/050939 patent/WO2010130965A1/fr not_active Ceased

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