WO2005094969A1 - Air cleaning device for vehicles and buildings - Google Patents

Air cleaning device for vehicles and buildings Download PDF

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Publication number
WO2005094969A1
WO2005094969A1 PCT/IT2004/000200 IT2004000200W WO2005094969A1 WO 2005094969 A1 WO2005094969 A1 WO 2005094969A1 IT 2004000200 W IT2004000200 W IT 2004000200W WO 2005094969 A1 WO2005094969 A1 WO 2005094969A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning device
air cleaning
filter box
air
box
Prior art date
Application number
PCT/IT2004/000200
Other languages
French (fr)
Inventor
Mario Arborio
Original Assignee
Mario Arborio
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 Mario Arborio filed Critical Mario Arborio
Publication of WO2005094969A1 publication Critical patent/WO2005094969A1/en

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Classifications

    • 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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases
    • 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
    • B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • 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
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40084—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by exchanging used adsorbents with fresh adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/41—Further details for adsorption processes and devices using plural beds of the same adsorbent in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/455—Gas separation or purification devices adapted for specific applications for transportable use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/455—Gas separation or purification devices adapted for specific applications for transportable use
    • B01D2259/4558—Gas separation or purification devices adapted for specific applications for transportable use for being employed as mobile cleaners for ambient air, i.e. the earth's atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4591—Construction elements containing cleaning material, e.g. catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/40—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for cleaning of environmental air, e.g. by filters installed on vehicles or on streets

Definitions

  • the invention concerns a device for cleaning polluted air.
  • This fine dust originates from the ground, from cladding material flaking off buildings, from combustion - especially in central heating systems - of oil and coal, from crumbling road surfaces, from dust blown in by the wind, from fireworks, from vehicle exhaust, from particles rubbed off the tyres of vehicles travelling over the roads.
  • the present invention makes it possible to remove polluting agents, especially the fine particles present in combustion gases whether produced by fixed installations or by the engines of vehicles, using simple and inexpensive means as will now be explained.
  • Subject of the invention is an air cleaning device comprising an oblong box-like filtering structure, open at each end, so that a current of polluted air, entering at one end and forced through the filtering material, emerges clean at the other end.
  • the open ends of the filter box are fitted with grilles.
  • the structure of the box may be of metallic or plastic material.
  • the filter box contains layers of an adsorbent material.
  • the adsorbent material may be activated carbon, preferably containing palladium.
  • the adsorbent layers act specifically on fine dust particles and on benzene.
  • the filter box comprises fiber glass.
  • the filter box can be mounted on private or public vehicles the movement of which forces air through the box.
  • the filter box can usefully be fitted onto trains and trams.
  • the filter box can be installed inside a vehicle with the air entry aperture facing frontward and the exit aperture rearward.
  • the filter box can be mounted at one or at both sides of the vehicle or on its roof.
  • the filter box can advantageously be shaped similar to the protective or decorative strips applied lengthwise to many vehicles.
  • filter box for private vehicles may be as follows: length 1 m, height 40 cm, width 3-5 cm.
  • filter boxes can be mounted with the entry aperture facing towards the main direction of wind so that air is forced through the filtering material.
  • the box can be fitted to balconies, or on roofs as the case may be.
  • the adsorbent material can be regenerated.
  • the material may be regenerated on the spot by .equipment made for the purpose, or at a specialized workshop where the vehicle, or the box, removed from the vehicle or from its position on a building, can be taken.
  • FIG. 1 Automobile with filter boxes at the side, perspective.
  • Fig. 2 Detail of a filter box, partially cut away, perspective.
  • Fig. 3 Building with filter boxes outside the balconies, perspective.
  • Fig. 4 Roadside traffic sign with a filter box below, perspective.
  • Figure 1 shows a car 10 with sides 11 and door 15.
  • Flat boxes 20 are mounted, one on each side 11 , said boxes having at their ends entry and exit openings, respectively 22 and 24, protected by grilles 26.
  • the entry openings 22 face towards the front of the vehicle with the exit openings 24 facing rearwards.
  • FIG. 1 The graphic "break" in the filter box 20, Figure 2, reveals the inside of the filter 30 containing activated carbon 32 and palladium 32. Movement by the vehicle (Figure 1) causes polluted air to flow in (arrows 27), passing through the filters 30 and emerging as cleaned air (arrows 28).
  • Figure 3 shows a building 50 with balconies 55 onto which are mounted filter boxes 60 containing a filter of activated carbon similar to that shown in Figure 2, and with end openings 65. The building is situated in a position where strong winds prevail. The wind carries air through one of the openings 65 into the filter and out through , the other opening after cleaning.
  • Figure 4 shows a large road sign 80 on the edge 82 of the road 85 fully exposed to the effect of wind.
  • An oblong filter box 90, with openings 92, is mounted at the base of the sign.
  • the box 90 contains a layer of activated carbon for removing fine dust particles from the air.
  • each filter could clean 0.40 m 3 of air every 2 metres, and therefore 200 m 3 in 1 km.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

Air cleaning device comprising a filter box (20) oblong in shape, the structure of which is of plastic or metallic material, with openings (20, 24) at each end, there being inside the box layers of activated carbon (32) so that when a draught of polluted air passes through the box it emerges cleaned at the other end. Said filter box can be mounted on private and public motor vehicles (10) as well as on buildings (50) situated in places where there is usually a strong wind, aligning the box in the same direction as that in which the wind blows, or again on fixed road signs, passage of air being forced through the box by movement of the motor vehicle or by the wind.

Description

Air cleaning device for vehicles and buildings
The invention concerns a device for cleaning polluted air.
Worldwide problems of pollution are especially acute in towns where the air we breathe is now becoming not only extremely damaging to health but even a cause of death.
One of the main obstacles to a solution to the problem consists in the fact that means installed for cleaning the air necessarily require energy the production of which creates further pollution. Pollution is not only caused by nitrogen oxide and sulphur dioxide but also, especially in cities, by the presence of fine dust particles of an average diameter of less than 10 microns, that penetrate the lungs leading to considerable damage.
Recent data show that these particjes constitute a serious threat to the health of town dwellers, causing respiratory diseases and even lung cancer, as well as heart problems, although increases in the quantity of fine dust only amount to 6% for every 10 micrograms of fine dust per cubic metre.
These quantities are amply exceeded in most large cities. This fine dust originates from the ground, from cladding material flaking off buildings, from combustion - especially in central heating systems - of oil and coal, from crumbling road surfaces, from dust blown in by the wind, from fireworks, from vehicle exhaust, from particles rubbed off the tyres of vehicles travelling over the roads.
But the main cause of pollution in urban centres comes from the exhaust produced by motor vehicles since all attempts to prevent it, including catalytic mufflers, have not solved the problem.
The present invention makes it possible to remove polluting agents, especially the fine particles present in combustion gases whether produced by fixed installations or by the engines of vehicles, using simple and inexpensive means as will now be explained. Subject of the invention is an air cleaning device comprising an oblong box-like filtering structure, open at each end, so that a current of polluted air, entering at one end and forced through the filtering material, emerges clean at the other end.
The open ends of the filter box are fitted with grilles. The structure of the box may be of metallic or plastic material.
The filter box contains layers of an adsorbent material.
The adsorbent material may be activated carbon, preferably containing palladium.
The adsorbent layers act specifically on fine dust particles and on benzene.
The filter box comprises fiber glass.
The filter box can be mounted on private or public vehicles the movement of which forces air through the box.
The filter box can usefully be fitted onto trains and trams. The filter box can be installed inside a vehicle with the air entry aperture facing frontward and the exit aperture rearward.
Alternatively, the filter box can be mounted at one or at both sides of the vehicle or on its roof.
The filter box can advantageously be shaped similar to the protective or decorative strips applied lengthwise to many vehicles.
Dimensions of the filter box for private vehicles may be as follows: length 1 m, height 40 cm, width 3-5 cm. As regards application of the device to buildings, where these are situated in windy positions, filter boxes can be mounted with the entry aperture facing towards the main direction of wind so that air is forced through the filtering material. For this purpose the box can be fitted to balconies, or on roofs as the case may be.
Further uses may be represented by mounting it on road signs, on pylons or trellis work, and on noise-absorbing structures.
The adsorbent material can be regenerated.
The material may be regenerated on the spot by .equipment made for the purpose, or at a specialized workshop where the vehicle, or the box, removed from the vehicle or from its position on a building, can be taken.
Characteristics and purposes of the invention will be made still clearer by the following examples of its execution illustrated by diagrammatically drawn figures.
Fig. 1 Automobile with filter boxes at the side, perspective. Fig. 2 Detail of a filter box, partially cut away, perspective. Fig. 3 Building with filter boxes outside the balconies, perspective. Fig. 4 Roadside traffic sign with a filter box below, perspective. Figure 1 shows a car 10 with sides 11 and door 15.
Flat boxes 20 are mounted, one on each side 11 , said boxes having at their ends entry and exit openings, respectively 22 and 24, protected by grilles 26. The entry openings 22 face towards the front of the vehicle with the exit openings 24 facing rearwards.
The graphic "break" in the filter box 20, Figure 2, reveals the inside of the filter 30 containing activated carbon 32 and palladium 32. Movement by the vehicle (Figure 1) causes polluted air to flow in (arrows 27), passing through the filters 30 and emerging as cleaned air (arrows 28). Figure 3 shows a building 50 with balconies 55 onto which are mounted filter boxes 60 containing a filter of activated carbon similar to that shown in Figure 2, and with end openings 65. The building is situated in a position where strong winds prevail. The wind carries air through one of the openings 65 into the filter and out through, the other opening after cleaning. Figure 4 shows a large road sign 80 on the edge 82 of the road 85 fully exposed to the effect of wind. An oblong filter box 90, with openings 92, is mounted at the base of the sign. The box 90 contains a layer of activated carbon for removing fine dust particles from the air. The invention offers evident advantages.
Where filter boxes are mounted on motor vehicles, each filter could clean 0.40 m3 of air every 2 metres, and therefore 200 m3 in 1 km. Taking as an example an average town measuring 50 km per side corresponding to about 2,500 billion m3 of air, and allowing for 3,000,000 vehicles fitted with filter boxes doing an average of 20 km per day, with a single filter box fitted to one side of each vehicle, about 12 billion m3 of air would be cleaned and therefore, with a filter box on both sides of the vehicle, about 24 billion m3 of air.
As the cleaning capacity of each vehicle fitted with filters would substantially exceed the pollution that a single vehicle produces, a situation would arise in which vehicles could be used, even on days when this is prohibited at present on account of excessive pollution, a great advantage to all especially to car owners.
An important fact to note is that the larger the vehicle, and therefore the greater its polluting potential, the larger can the box filters be, and consequently the greater would be the cleaning capacity of these large vehicles. By means of the invention, heavy continuously moving vehicles, such as buses and trams can fulfil the double purpose of transport and of air cleaning.

Claims

1. Air cleaning device, characterized in that it comprises an oblong filter box, with an opening at each end, so that a draught of polluted air enters at one end, becomes cleaned while passing through, and leaves at the other end.
2. Air cleaning device as in claim 1 , characterized in that grilles are fitted over the end openings.
3. Air cleaning device as in claim 1 , characterized in that the structure of the filter box is made of a metallic material.
4. Air cleaning device as in claim 1 , characterized in that the structure of the filter box is of plastic material.
5. Air cleaning device as in claim 1 , characterized in that layers of adsorbent material are laid inside the box.
6. Air cleaning device as in claim 5, characterized in that the adsorbent material is activated carbon.
7. Air cleaning device as in claim 6, characterised in that the activated carbon contains palladium.
8. Air cleaning device as in claim 5, characterized in that the layers of adsorbent material clean the particles of fine dust from the air.
9. Air cleaning device as in claim 5, characterized in that the layers of adsorbent material remove benzene from the air.
10. Air cleaning device as in claim 5, characterized in that the layers of adsorbent material clean the air of gases in the exhaust from motor vehicles.
11. Air cleaning device as in claim 1 , characterized in that the filter box. comprises fiber glass.
12. Air cleaning device as in claim 1 , characterized in that the filter box is mounted on private and public vehicles, their movement promoting the passage of polluted air through the box.
13. Air cleaning device as in claims Λ , characterized in that the filter box is mounted on trains.
14. Air cleaning device as in claims 1 and 12, characterized in that the filter box is mounted on trams.
15. Air cleaning device as in claims 1 and 12, characterized in that the filter box is mounted inside a motor vehicle with the entry opening facing towards the front of the vehicle and the exit opening facing rearward.
16. Air cleaning device as in claim 15, characterized in that the filter box may be mounted on one side of the motor vehicle or on both sides.
17. Air cleaning device as in claim 15, characterized in that the filter box is mounted on the roof of the motor vehicle.
18. Air cleaning device as in claim 15, characterized in that the filter boxes are shaped substantially like the decorative and protective longitudinal bands on many motor vehicles.
19. Air cleaning device as in claim 15, characterized in that the filter boxes for private cars present the following dimensions: length 1 m, height 40 cm, width 3-5 cm.
20. Air cleaning device as in claim 1 , characterized in that in localities where strong winds usually, or periodically, prevail, the filter boxes can be mounted on parts of buildings, aligned in the direction of the wind so that it will blow polluted air through the boxes.
21. Air cleaning device as in claim 20, characterized in that the filter box 'is fitted to the balconies of the buildings.
22. Air cleaning device as in claim 20, characterized in that the filter box is mounted on the roof of the buildings.
23. Air cleaning device as in claim 20, characterized in that the filter box is mounted on fixed road signs.
24. Air cleaning device as in claim 20, characterized in that the filter box is mounted on existing trellis work.
25. Air cleaning device as in claim 20, characterized in that the filter box is mounted on trellis work erected for this purpose.
26. Air cleaning device as in claim 20, characterized in that the filter box is mounted on noise deadening structures.
27. Air cleaning device as in claim 5, characterized in that the adsorbent material is to be regenerated.
28. Air cleaning device as in claim 27, characterized in that regeneration is done on the box as mounted using special equipment.
29. Air cleaning device as in claim 27, characterized in that regeneration is done at specialized workshops by taking the motor vehicle to one of these, or by removing the filter from the vehicle or from the building and taking it to the workshop.
PCT/IT2004/000200 2004-03-30 2004-04-09 Air cleaning device for vehicles and buildings WO2005094969A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2004A000617 2004-03-30
ITMI20040617 ITMI20040617A1 (en) 2004-03-30 2004-03-30 CITIZEN ATMOSPHERIC PURIFIER FOR VEHICLES AND REAL ESTATE

Publications (1)

Publication Number Publication Date
WO2005094969A1 true WO2005094969A1 (en) 2005-10-13

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PCT/IT2004/000200 WO2005094969A1 (en) 2004-03-30 2004-04-09 Air cleaning device for vehicles and buildings

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IT (1) ITMI20040617A1 (en)
WO (1) WO2005094969A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010063452A2 (en) * 2008-12-02 2010-06-10 Martin Clemens Device for the relative wind-supported filtering of the air surrounding vehicles
WO2017216611A1 (en) * 2016-06-16 2017-12-21 Lara Rodríguez Miguel Outdoor air purifier improved by air currents
DE102018000357A1 (en) 2017-01-18 2018-07-19 Mann+Hummel Gmbh Road vehicle with ambient air cleaning device, ambient air cleaning device and filter element
CN111672270A (en) * 2020-07-13 2020-09-18 汪茹悦 Formaldehyde adsorption machine
WO2021074637A1 (en) * 2019-10-17 2021-04-22 Stephen Partridge An air filtration system
WO2021259671A1 (en) * 2020-06-22 2021-12-30 Frank Johne Terrestrial vehicle
DE102022203918A1 (en) 2022-04-21 2023-10-26 Thyssenkrupp Ag vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136617A (en) * 1960-12-05 1964-06-09 Drager Otto H Air filter container
US3675398A (en) * 1970-10-15 1972-07-11 Lawrence P Giarrizzo Exhaust filter attachment
GB2218354A (en) * 1988-02-04 1989-11-15 Abraam Riad Ghobrial Air cleaner
WO1990011433A1 (en) * 1989-03-20 1990-10-04 Wladyslaw Fedorowicz A system reducing air, water and soil pollution
GB2248409A (en) * 1990-05-03 1992-04-08 John Christopher Thompson Air filter
US5509853A (en) * 1994-07-11 1996-04-23 Wells; Del Method and manufacture for purifying the atmosphere
EP0707989A1 (en) * 1994-10-14 1996-04-24 HS Technik und Design Technische Entwicklungen GmbH Apparatus for cleaning ambient air
WO2000036342A1 (en) * 1998-12-15 2000-06-22 Ecotech Sa Device for sucking up and filtering polluted air

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136617A (en) * 1960-12-05 1964-06-09 Drager Otto H Air filter container
US3675398A (en) * 1970-10-15 1972-07-11 Lawrence P Giarrizzo Exhaust filter attachment
GB2218354A (en) * 1988-02-04 1989-11-15 Abraam Riad Ghobrial Air cleaner
WO1990011433A1 (en) * 1989-03-20 1990-10-04 Wladyslaw Fedorowicz A system reducing air, water and soil pollution
GB2248409A (en) * 1990-05-03 1992-04-08 John Christopher Thompson Air filter
US5509853A (en) * 1994-07-11 1996-04-23 Wells; Del Method and manufacture for purifying the atmosphere
EP0707989A1 (en) * 1994-10-14 1996-04-24 HS Technik und Design Technische Entwicklungen GmbH Apparatus for cleaning ambient air
WO2000036342A1 (en) * 1998-12-15 2000-06-22 Ecotech Sa Device for sucking up and filtering polluted air

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010063452A2 (en) * 2008-12-02 2010-06-10 Martin Clemens Device for the relative wind-supported filtering of the air surrounding vehicles
WO2010063452A3 (en) * 2008-12-02 2010-10-07 Martin Clemens Device for the relative wind-supported filtering of the air surrounding vehicles
WO2017216611A1 (en) * 2016-06-16 2017-12-21 Lara Rodríguez Miguel Outdoor air purifier improved by air currents
WO2018134313A1 (en) 2017-01-18 2018-07-26 Mann+Hummel Gmbh Road vehicle having an ambient air purification device, ambient air purification device and filter element
WO2018134314A1 (en) 2017-01-18 2018-07-26 Mann+Hummel Gmbh Ambient air purification device, road vehicle having an ambient air purification device and filter element
WO2018134315A1 (en) 2017-01-18 2018-07-26 Mann+Hummel Gmbh Environmental air cleaning device, road vehicle having environmental air cleaning device, and filter element
DE102018000357A1 (en) 2017-01-18 2018-07-19 Mann+Hummel Gmbh Road vehicle with ambient air cleaning device, ambient air cleaning device and filter element
US11065942B2 (en) 2017-01-18 2021-07-20 Mann+Hummel Gmbh Environmental air cleaning device, road vehicle having environmental air cleaning device, and filter element
US11634011B2 (en) 2017-01-18 2023-04-25 Mann+Hummel Gmbh Road vehicle having an ambient air purification device, ambient air purification device and filter element
WO2021074637A1 (en) * 2019-10-17 2021-04-22 Stephen Partridge An air filtration system
GB2588386A (en) * 2019-10-17 2021-04-28 Patridge Stephen An air filtration system
WO2021259671A1 (en) * 2020-06-22 2021-12-30 Frank Johne Terrestrial vehicle
CN111672270A (en) * 2020-07-13 2020-09-18 汪茹悦 Formaldehyde adsorption machine
DE102022203918A1 (en) 2022-04-21 2023-10-26 Thyssenkrupp Ag vehicle

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