WO2007016800A1 - Systeme epurateur d'air - Google Patents

Systeme epurateur d'air Download PDF

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Publication number
WO2007016800A1
WO2007016800A1 PCT/CH2006/000403 CH2006000403W WO2007016800A1 WO 2007016800 A1 WO2007016800 A1 WO 2007016800A1 CH 2006000403 W CH2006000403 W CH 2006000403W WO 2007016800 A1 WO2007016800 A1 WO 2007016800A1
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WO
WIPO (PCT)
Prior art keywords
filter
limited
heating
filtrate
mass
Prior art date
Application number
PCT/CH2006/000403
Other languages
English (en)
Other versions
WO2007016800A8 (fr
Inventor
Jan Czerwinski
Heinz Burtscher
Markus Kasper
Andreas Mayer
Original Assignee
Etech Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etech Ag filed Critical Etech Ag
Publication of WO2007016800A1 publication Critical patent/WO2007016800A1/fr
Publication of WO2007016800A8 publication Critical patent/WO2007016800A8/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0086—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4263—Means for active heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/448—Auxiliary equipment or operation thereof controlling filtration by temperature measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/30—Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan

Definitions

  • the invention relates to an air cleaner system using a method to heat a filtrate mass .
  • WO 03/093734 discloses a filter system to clean an airflow from gaseous contaminants.
  • the filter system uses a heater in order to change bacteria in non-polluting material. It is mentioned that the filter has not to be cleaned manually, when the filter is made of microporous/nanoporous materials as metal oxide frameworks consisting of transition metals, wherein the heater is embedded in the metal oxide/complementary zeolite material. The formation of a filter cake is not mentioned.
  • CH 688,402 shows a filter system that cleans an airflow from dust .
  • the filter cake is removed by means of rotation of the filter element.
  • the filter element is looped around propel means, due to this redirection, the filter cake cracks.
  • a pres ⁇ surised airflow removes the cracked filter cake.
  • This filter system is rather complicated, because it shows various elements that have to be powered by means such as motor. Another drawback is that the filter system is only applicable to systems, which have large dimensions and are stationary.
  • US 6,585,792 discloses an air filtering system with easily re- movable and replaceable filter elements. It is a disadvantage of this device that the filter has to be replaced after a certain operation time.
  • the set object is met in accordance with the invention by means of a method whereas the filtrate mass will be heated by heating means, in order to dry the filtrate mass and to prevent microbial activity.
  • the set object is further achieved with the invention by means of a method whereas a periodic mechanical shock is imposed to the filter system.
  • the mechanical shock is preferably caused by an acoustic shock-wave, by a pressure wave and/or mechanical vibration. Due to the mechanical shock deadherence of the filtrate mass from the filter material may be obtained.
  • the mechanical shock is applied on a regular periodic basis or preferably on a basis subject to external regulation.
  • External regulation is triggered by events, which may be mass of, and/or thickness of, and/or dryness of the filtrate mass, and/or the pressure drop across the filter induced by the filtrate mass. This makes very comfortable as well, since the filter triggers the impose of the mechanical by itself.
  • Fig. 1 shows schematically a cylindrical stand-alone device of a filter device according to the present invention.
  • Pig. 2 shows schematically half of a top view of the sealing element .
  • Fig. 3 shows schematically a rectangular stand-alone device of a filter device according to the present invention.
  • Fig. 4 shows schematically a top view of the filter device of figure 4.
  • Fig. 5 shows schematically the cross-sectional view of a filter element .
  • Fig. 6 shows schematically the cross-sectional view of another filter element.
  • Fig. 7 shows schematically the cross-sectional view of a further filter element.
  • Fig. 8 shows the filter element of figure 7 in a top view.
  • Fig. 9 shows schematically the installation under the front seat of car of the filter device according to the present invention.
  • Fig. 10 shows the same device as Fig. 9, installed behind the back seat of a car.
  • Fig. 11 shows the same device as Fig. 9, installed on the roof of a bus .
  • Fig. 12 shows the same device as Fig. 9, installed behind the driving cab of a truck.
  • Pig. 13 shows the size distribution of particles and the efficiency of different filter types .
  • Fig. 14 shows the efficiency and back pressure over time of filters of prior art and filters according to the present invention.
  • Fig. 15 shows the plot of a lung deposition to illustrate that a substantial part of particles smaller than 0.1 ⁇ m get trapped in the respiratory tract and cause disease.
  • FIG. 1 shows a device according to the present invention.
  • a casing 4 has the shape of a cylinder, and comprises at least filter chambers 20, 21, a contaminated air inlet 5, an exit 13, a cleaning air assembly 7, 8 ,9 and a filter element 3.
  • the ventilator 2 fan or a similar air moving device, which is located on one front end of the cylinder, creates a pressure difference across the filter chambers 20, 21.
  • the ventilator 2 is powered by an electric motor 1, alternatively it may be powered by the air stream that is created when the ventilator 2 is located on a driving vehicle, e.g. indirectly by an additional driving fan. It is also possible to arrange the ventilator 2 in front of inlet 5 and pushing the air through the filter chambers 20, 21.
  • the filter chamber 20, 21 is divided by a tube shaped filter element 3, which will be described by means of figure 6, into an inner cylindrical chamber 21 and into an outer ring-shaped chamber 20. Due to the structure of the filter the created pressure difference is in the ring-shaped chamber 20 as well as in the cylindrical chamber 21. As explained with Fig. 5 it is also possible to use an inverted flow direction. Due to the pressure difference a fluid stream is generated, a contaminated medium is sucked into the ring-shaped chamber 20 via an inlet 5. Further on the contaminated air enters the filter element 3. The filter element 3 decontaminates the contaminated medium.
  • the filtrate which is obtained from the contaminated medium is held back by the filter element 3 on its outer surface 23, which is the surface that is adjacent to the ring- shaped chamber 20 and its inner structure.
  • a filtrate mass or a filter cake builds itself up on the outer surface 23, which is also designated as "dirty side” and on the surfaces located on the interior of the filter element 3.
  • the medium then passes the inner surface 24 of the filter element, which is also designated as "clean side” .
  • the filter is designed in a way that no or almost no contaminated particles reach the clean side. This is based on the air velocity of the medium passing through the filter and this can be calculated on the basis of the sucked/pushed air volume and the surface and cross-section of the filter element.
  • Said filtrate has three states: (a) suspended particles in the fluid (air) stream to be cleaned (b) a so called cake as the trapped mass on the filter, which can be wet or dry, depending on the fraction of water, and (c) a deadhered cake collected residue .
  • the medium is now decontaminated and passes the ventilator 2, an exit 13, a tube 12 and a silencer 11 and leaves the device.
  • the cleaned medium may be used for several purposes such as supply the interior of a car, house etc. with clean air.
  • the cleaning process comprises at least a mechanical shock .
  • the filtrate mass is removed from the filter element 3 by the mechanical shock that is applied to the system. This detaches the filtrate mass from the filter element 3.
  • the mechanical shock may be applied when the fluid stream is flowing or if the fluid stands still .
  • the imposition of the mechanical shock may be applied on a regular periodic basis, on a basis subject to external regulations or triggered by any other event.
  • An event may be the mass of and/or the thickness of and/or the dryness of the filtrate mass or the pressure drop across the filter caused by the filtrate mass.
  • Corresponding sensor elements are not shown in the drawings but are known to someone skilled in the art.
  • the mechanical shock may be a result of a pressurized air flow.
  • a cleaning air compressor 9 pressurises cleaning air, which is stored in a cleaning air tank 8.
  • a valve 7 opens and a pressure-impulse is sent via a cleaning air inlet 14 into the cylindrical chamber 21.
  • the pressure-impulse expands itself in the cylindrical chamber 21 and permeates through the filter element 3.
  • the filtrate mass will be detached from the filter element 3 and falls down through the ring-shaped chamber 20 to the bottom 19 of the ring- shaped chamber 20. Since the filtrate is built up on the outer side 24, which is the "dirty side", it is ensured that almost no filtrate falls into the inner cylinder 21, which is the "clean side” .
  • a residue slot 6 is shut by a ring-shaped sealing element 16, which shows circular arranged holes 17.
  • the bottom 19 of the ring-shaped chamber 20 comprises also holes 18, which are ar ⁇ ranged in the same manner as the holes 17 in the sealing element 16.
  • the sealing element 16 may be turned around a middle axis 15. As soon as the holes 17 overlap the holes 18 it is possible to remove the filtrate mass. Additionally the ventilator 2 can be stopped or even closed through a shutter.
  • the air stored in the air tank 8 can be provided beforehand through, guiding a fraction of the clean air flow 11 into a compression chamber to fill said tank 8.
  • the pressure of the cleaning air pulse may be 3 to 5 bar .
  • the filter element 3 will be heated by means of an electrical heating circuit 31.
  • the filter material may be made out of or contain heat-generating material such as metals or ceramics in order to generate heat as a result of resistive heating, when a electrical current is passed through the heating circuit 31.
  • a temperature control sensor 32 measures the temperature in the core of the filter element 3. Due to increasing the heat, the filtrate mass will be dried and microbial activity in the filtrate mass will be suppressed. The heat may be conducted via the filter material. It is also possible to provide heat elements adjacent to the filter and use conduction or convection to heat the filtrate mass. It is also much more convenient to collect filtrate from the residue slot 6, which was dried by the heating system 31.
  • the pressure of the mechanical shock, the temperature and the material as well as the structure of the filter are parameters to dimension the properties of the filter in view of its mechanical stability. Those parameters have to be chosen in order to prevent a mechanical deformation of the filter element 3, when the mechanical shock or the heating is applied.
  • the filter element 3 comprises material, which allows building a filtrate mass at low flow velocities, preferably under 5cm/sec of the fluid stream. This allows to capture particles in the nanoparticulate size range of 20 - 300 nm.
  • material may be sintered metal powder porous sheet metal structures, sintered metal fibre porous structures and metallised filter structures.
  • a temperature signal which results from a temperature sensor
  • control unit 10 will be analysed in a electronic control unit 10.
  • the control unit is able to analyse various parameters of the filter device and to provide signals for various purposes .
  • the pressure sensor 33 measures the pressure difference inside the cylindrical chamber 21. This pressure difference may be used as a measure of quantity (mass) and quality (such as dryness and porosity) of the filtrate mass. This parameters may be used to trigger the mechanical shock and/or the heating action.
  • control unit is able to make the filter device much more efficient because it starts actions, such as the mechanical shock as described above, in order to maintain a very high efficiency, which means that low-efficient "spikes" will be eliminated from the filtration efficiency profile over time.
  • the medium which has to be decontaminated may show various states such as gaseous, liquid or a mixed fluid medium.
  • the fluid stream of said medium may be flowing in a continuous or discontinuous manner.
  • the medium may also show various temperatures but due to the compact construction of the filter element the temperature of the medium will not change significantly.
  • the mechanical shock may be an acoustic shock-wave or a mechanical vibration.
  • the heating involves for example convectional heating via the fluid stream to be filtered and/or radiative heating of the filtrate mass.
  • the heating may be in continuous, cyclical or discontinuous manner.
  • Figure 2 shows a top view of the sealing element 16. Circular arranged holes 17 give way to the residue as described above.
  • FIG 3 is a cross-sectional view of figure 4 and shows a further device according to the present invention. Identical or similar features receive the same reference numerals in all drawings.
  • the casing 4 has a cuboid shape. Openings 43 on its outer wall are the inlet for decontaminated air, as well as the outlet of the residue that is removed when the mechanical shock is applied.
  • An electro-mechanical vibrator 41 is used to shake the filter cake of the medium periodically.
  • Figure 5 shows the top view of a filter element 3.
  • the filter element 3 has an encasing tube-like shape. Within that tube-like shape the filter shows several pleats 60 in order to enhance its surface.
  • the contaminated medium enters into the filter element 3 in direction of arrow 63. In the filter element 3 the contaminated medium will be filtered and the particles remain in the filter as filtrate mass. The decontaminated medium exits the filter element 3 into the inner chamber 64.
  • the flow of the medium may also be reversible as indicated by an arrow 65.
  • the medium in the inner part 64 is contaminated and it is being decontaminated when it passes the filter element 3 in the direction of arrow 65.
  • the filter element 3 may be made out of sintered-metal-powder- masses and/or sintered-metal-fibre-masses and the like. Furthermore, the filter elements may be made out of hybrid, laminated, coated or otherwise heterogeneously composed materials wherein such material components as mentioned before. A further preferred material may also comprise antimicrobial coatings such as nanoparticultae or solid coatings of metals whereas silver or copper may be used.
  • the pore size can be chosen between 10 and 30 micron, whereas the porosity can be between 80 and 90 percent.
  • the filter material is chosen to be heat resistant up to at least 200 degree Celsius.
  • the heating could also be conducted with a infrared heating source in the centre of the filter unit, e.g. to reach temperatures between 80 and 140 degree Celsius.
  • a infrared heating source in the centre of the filter unit, e.g. to reach temperatures between 80 and 140 degree Celsius.
  • Figure 6 shows another filter element 3 in a cross-sectional view.
  • the filter element 3 has the shape of a cylinder and is rotationally symmetric around its middle axis 66.
  • the filter element 3 shows several pleats 60, with the same purpose as already mentioned.
  • the airflows are the same as described in figure 5.
  • Figure 7 and 8 show a further filter element 3 which is used in a device as described by means of figure 3.
  • the filter has a rectangular shape.
  • the characteristic and the airflows of the filter element 3 is according to the ones as already described.
  • Figure 9 shows a first possible application of the device and the method as described above.
  • the filtration system 50 is placed under the front seat 105 of a car 110. In a continuous manner it sucks in contaminated air 100 from the interior of the car. The decontaminated air 101 exits via an opening.
  • Figure 10 shows a second possible application of the device and method as described above.
  • the filtration system 50 is located in the boot 106 of the car 110.
  • FIG 11 shows a further application of the device and method as described above.
  • the filtration system 50 is arranged on the roof of a bus 111. Via an intake opening the filtration system 50 sucks in contaminated air 100 from the interior of the bus 111. After decontamination in the filtration system 50 decontaminated air 101 exits the filtration system 50 via a pipe 120. The pipe 120 guides the decontaminated air 101 back into the interior of the bus 111. Depending on the volume of the cabin, several filtration systems 50 have to be arranged.
  • Figure 12 shows another application of the filtration system, which is arranged on a truck 112. Contaminated air 100 is sucked in to the filtration system via a tube 124. Decontaminated air 101 exits the filtration system 50 via an exit and enters into the interior of the truck.
  • the dimension of the filter system can be chosen to have a face velocity between 5 and 10 cm/s, whereas the air flow has a value which is equivalent exchanging three to five times the volume of the cabin of the vehicle per hour.
  • the filtration system is used for any nominally enclosed environments as well as air-critical environments such as surgical theatres and the like.
  • Figure 13 shows the characteristic of the device and method according to the present invention.
  • Graph 200 shows a possible size distribution of engine soot in ambient air
  • graph 201 shows a possible size distribution of atmospheric dust in ambient air
  • Graph 202 shows the characteristic of the efficiency of a standard cabin air filter such as a filter known from prior art. It is obvious that the standard cabin filter is at its most efficient, when the particles are larger than 5 ⁇ m.
  • soot particles are between 0.01 ⁇ m and 1 ⁇ m it is apparent, that only a little amount of soot particles are filtered with such air filter.
  • Graph 203 and 204 shows characteristics of a filtration system according to the present invention at various velocities of flow.
  • Graph 203 shows the characteristic of the filtration system with a velocity of flow of 1 cm/s, it can be seen, that the efficiency is nearly 100 percent for all different particle diameters. The efficiency sinks about 5 percent when the particles are in a range between 0.01 and 1 ⁇ m. If the velocity of flow around 10 cm/s the efficiency sinks down to 80 percent in said range.
  • a device according to the present invention is much more efficient, than the standard cabin air filter, even at larger velocities of the air stream. Therefore air velocities of 2 mm/s to 50 cm/s are contemplated to be used according to the invention, preferably air velocities of 5 iran/s to 10 cm/s and more preferably air velocities of 1
  • Figure 14 shows the efficiency over time of the filter system according to prior art (300, 302) and to the present invention (400, 402) .
  • the efficiency 300 of the filter of prior art starts at around 15 percent increases over time up to 100 percent, this is due to the fact that particles are held back by the filter and a filter cake is built up on the surface of the filter. Due to the filter cake the back pressure 302 is also increasing. When the backpressure 302 reaches a certain limit, the filter has to be cleaned. After cleaning the filter the efficiency 300 is rather low again. In the case that cleaning is equivalent to replacing there is an additional time, wherein there is no filter action or no air flow.
  • the efficiency 400 starts at around 80 percent, which is a high level. Within in a very short time, the filter reaches its maximum efficiency, this is due to the fact particles are held back by the filter and a filter cake is built on the surface of the filter. Due to the filter cake the back pressure 404 increases also. When the backpressure 402 reaches' a certain limit, the filter will be cleaned according to the present invention. In the case that the cleaning step is performed with a closed air outlet, then there is a short time, wherein there is no air flow. After cleaning the filter through de-caking, the efficiency 400 starts at around 80 percent and the backpressure 402 is low as well. The just described cycle starts again.
  • the cycle according to the present invention is around 3 times shorter than the cycle of prior art. This is to minimise the negative effect of the back pressure.
  • the use of the heating changes the slope of the curve, i.e. reduces the inclination and allows a longer standing time. It is preferable to use the heating in a discontinuous way, to maintain the temperature of the filter and filtrate mass in a range to secure the antimicrobial action and properties of the filter.
  • the back pressure may be between 100 and 500 mbar.
  • Figure 15 illustrates that there are a substantial proportion of particles under IOOA (O.lum) which get trapped in the respiratory tract and which can cause disease, and that (by comparison with figure 13) such soot particles are not removed by standard cabin air filters of prior art .
  • IOOA O.lum
  • Every embodiment described above can be combined with one or more features of any other embodiment from the disclosure. Additionally it is possible to add an ultraviolett light source to the device, directed onto the filter masse to kill biological material, especially viruses, trapped by the filter element. It is possible to provide a lamp emitting UV-radiation near the filter wall elements, it is also possible in case of the embodiments of Fig. 11 and 12 to arrange, preferably additionally, a transparent wall of the filter element near an upper surface of the case of the filter element, so that UV light from the environment, i.e. from the sun, can act upon the filter mass.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un procédé permettant de chauffer une masse de filtrat piégée sur un matériau filtre de filtration basse température d'au moins 100 °C. Ce chauffage permet d'obtenir des avantages notamment au niveau du séchage et de la suppression de l'activité microbienne dans la masse de filtrat. Le système épurateur d'air faisant appel à ce procédé peut former une masse de filtrat à faible débit (< 5 cm/seconde) du flux de liquide à filtrer, d'où des avantages tels que la capacité du filtre à capturer des particules dans la gamme nanoparticulaire de 20-300 nm.
PCT/CH2006/000403 2005-08-09 2006-08-03 Systeme epurateur d'air WO2007016800A1 (fr)

Applications Claiming Priority (2)

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US70642205P 2005-08-09 2005-08-09
US60/706,422 2005-08-09

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WO2007016800A1 true WO2007016800A1 (fr) 2007-02-15
WO2007016800A8 WO2007016800A8 (fr) 2007-03-29

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Cited By (10)

* Cited by examiner, † Cited by third party
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EP2075048A1 (fr) * 2007-12-18 2009-07-01 Dall'Oglio, Stefano Procédé et système de filtrage biologique avec régénération du filtrage
FR2939691A1 (fr) * 2008-12-12 2010-06-18 Michel Lombardo Dispositif autonettoyant de filtration de l'air pour vehicule a moteur.
CN103830947A (zh) * 2013-12-11 2014-06-04 胡瀛 一种精滤器
CN104096402A (zh) * 2014-07-30 2014-10-15 梧州市旺捷机械制造有限公司 振动滤油器
TWI572830B (zh) * 2013-09-11 2017-03-01 熱映光電股份有限公司 空氣濾淨器
EP2730912A3 (fr) * 2012-11-13 2017-04-26 AQA GmbH Dispositif de collecte des particules d'aérosol contenues dans l'air
IT201700117802A1 (it) * 2017-10-18 2019-04-18 Bmc Srl Metodo di controllo di un sistema di aspirazione di aria per un propulsore di un veicolo
US11167313B2 (en) 2018-02-09 2021-11-09 Paul NEISER Filtration apparatus and method
US11260330B2 (en) 2018-02-09 2022-03-01 Paul NEISER Filtration apparatus and method
US11666924B2 (en) 2018-02-15 2023-06-06 Paul NEISER Apparatus and methods for selectively transmitting objects

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CN111495044B (zh) * 2020-04-18 2022-04-15 上海申昙环保科技有限公司 一种单元化自替换式废气过滤装置

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Publication number Priority date Publication date Assignee Title
GB1462211A (en) * 1973-06-21 1977-01-19 Stork Amsterdam Gas filter
EP0736403A2 (fr) * 1995-04-06 1996-10-09 Behr GmbH & Co. Dispositif et procédé de traitement d'air délivré dans un intérieur
US5637216A (en) * 1991-10-04 1997-06-10 Rosenmund Ag, A Swiss Corporation Filter matting for a reversible-flow filter
US6358374B1 (en) * 1999-12-17 2002-03-19 Carrier Corporation Integrated photocatalytic and adsorbent technologies for the removal of gaseous contaminants
WO2003093734A1 (fr) * 2002-04-29 2003-11-13 Acron International Technology Limited Systeme de filtre d'epurateur d'air capable d'une oxydation catalytique nano-confinee
WO2004101113A1 (fr) * 2003-05-13 2004-11-25 Oy Hydrocell Ltd Procede de filtration, dispositif de filtration pour evacuer les impuretes de l'air d'un espace restreint et appareil d'evacuation du dioxyde de carbone de l'air d'un abri antiaerien

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1462211A (en) * 1973-06-21 1977-01-19 Stork Amsterdam Gas filter
US5637216A (en) * 1991-10-04 1997-06-10 Rosenmund Ag, A Swiss Corporation Filter matting for a reversible-flow filter
EP0736403A2 (fr) * 1995-04-06 1996-10-09 Behr GmbH & Co. Dispositif et procédé de traitement d'air délivré dans un intérieur
US6358374B1 (en) * 1999-12-17 2002-03-19 Carrier Corporation Integrated photocatalytic and adsorbent technologies for the removal of gaseous contaminants
WO2003093734A1 (fr) * 2002-04-29 2003-11-13 Acron International Technology Limited Systeme de filtre d'epurateur d'air capable d'une oxydation catalytique nano-confinee
WO2004101113A1 (fr) * 2003-05-13 2004-11-25 Oy Hydrocell Ltd Procede de filtration, dispositif de filtration pour evacuer les impuretes de l'air d'un espace restreint et appareil d'evacuation du dioxyde de carbone de l'air d'un abri antiaerien

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EP2075048A1 (fr) * 2007-12-18 2009-07-01 Dall'Oglio, Stefano Procédé et système de filtrage biologique avec régénération du filtrage
FR2939691A1 (fr) * 2008-12-12 2010-06-18 Michel Lombardo Dispositif autonettoyant de filtration de l'air pour vehicule a moteur.
EP2730912A3 (fr) * 2012-11-13 2017-04-26 AQA GmbH Dispositif de collecte des particules d'aérosol contenues dans l'air
TWI572830B (zh) * 2013-09-11 2017-03-01 熱映光電股份有限公司 空氣濾淨器
CN103830947A (zh) * 2013-12-11 2014-06-04 胡瀛 一种精滤器
CN104096402A (zh) * 2014-07-30 2014-10-15 梧州市旺捷机械制造有限公司 振动滤油器
IT201700117802A1 (it) * 2017-10-18 2019-04-18 Bmc Srl Metodo di controllo di un sistema di aspirazione di aria per un propulsore di un veicolo
EP3473843A1 (fr) * 2017-10-18 2019-04-24 Bmc S.R.L. Une méthode de contrôle pour contrôler un système d'admission d'air qui alimente un moteur de véhicule en air
US11143114B2 (en) 2017-10-18 2021-10-12 Bmc S.R.L. Control method for controlling an air intake system which supplies air to an engine of a vehicle
US11167313B2 (en) 2018-02-09 2021-11-09 Paul NEISER Filtration apparatus and method
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US11666924B2 (en) 2018-02-15 2023-06-06 Paul NEISER Apparatus and methods for selectively transmitting objects

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