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WO2018206782A1 - Appareil de filtration d'air - Google Patents

Appareil de filtration d'air Download PDF

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Publication number
WO2018206782A1
WO2018206782A1 PCT/EP2018/062242 EP2018062242W WO2018206782A1 WO 2018206782 A1 WO2018206782 A1 WO 2018206782A1 EP 2018062242 W EP2018062242 W EP 2018062242W WO 2018206782 A1 WO2018206782 A1 WO 2018206782A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
air
fans
housing
filter surfaces
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2018/062242
Other languages
English (en)
Inventor
Arto Koivuharju
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2018206782A1 publication Critical patent/WO2018206782A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/006—Safety devices
    • 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
    • F24F8/80—Self-contained air purifiers
    • 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
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/20—Rotorcraft characterised by having shrouded rotors, e.g. flying platforms
    • 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
    • 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
    • F24F8/108—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 using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2201/00—UAVs characterised by their flight controls
    • B64U2201/10—UAVs characterised by their flight controls autonomous, i.e. by navigating independently from ground or air stations, e.g. by using inertial navigation systems [INS]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/42—Mobile autonomous air conditioner, e.g. robots

Definitions

  • the present invention is concerned with a device and method for removing contamination and the like from air. Specifically, but not exclusively, the device is concerned with collecting unwanted airborne matter in different environments such as cities, polluted areas, industrial environments or the like.
  • unwanted debris and pollutants are often released into the air within the building. This may be a direct result of the processes that are taking place, for example machining operations creating air borne particles. Alternatively, unwanted debris of contamination may be released accidentally, for example a malfunction or accident in a process causing debris to be released into the air within the building inadvertently.
  • Contamination in the form of airborne particles presents a number of problems in a factory environment.
  • the contamination may present health and safety issues for the operatives working in the environment.
  • the contamination may also be detrimental to the processes that are taking place.
  • Many processes, particularly in the electronics sector require high levels of air quality i.e. low levels of contamination to prevent processes becoming defective as a result of the contamination.
  • contamination can cause breaches of environmental legislation or laws.
  • high levels of airborne matter can present fire and explosion risks.
  • an air filtering apparatus comprising a plurality of filter surfaces, wherein each filter surface comprises a fan associated with the filter surface and arranged in use to cause air to pass over or through the filter surface, wherein at least some of the plurality of fans are operable to generate sufficient lift to cause the apparatus to become airborne.
  • an air filter which incorporates a fan and filter arrangement to cause air to pass through or over a filtering surface.
  • one or more of the fans also creates a sufficient airflow (thrust) to cause the apparatus to become airborne.
  • the filtering surface may be any suitable surface arranged to entrap or collect debris.
  • the type and porosity of the filter surface may be selected depending on the degree of filtering required. For example, to selectively remove large debris a coarse filter (i.e. a filter with relatively large holes or porosity) may be used.
  • electric air cleansing may be used, such as a polarised-media electronic air cleaner or ioniser purifier to collect smaller debris with a help of electrical forces.
  • different types of filters may be used.
  • the fan associated with a respective filter surface advantageously causes air to be drawn (pulled) and/or pushed through or past the filter surface causing debris to be collected or entrapped.
  • the fans may be operated by independent motors or in groups using a suitable drive train.
  • each of said plurality of filter surfaces may be located in a circular housing wherein the housing is concentric with a respective fan.
  • the filter surface is a cylinder surrounding the fan such that air flow and vortices caused by the rotation of the fan proximate the filter surface causes debris to come into contact and/or pass through the surrounding filter.
  • the fans may be oriented at an angle with respect to the housing. In other examples, some but not all of the blades of the fans may be oriented at an angle with respect to the housing.
  • Some or all of the fans may advantageously have a vertical axis of rotation such that rotation of the fan about the axis directs air in a downwards direction to generate the desired lift. All or a subset of the fans may be arranged to generate lift or thrust.
  • the fans may not all rotate at the same speed but may be selectively controllable.
  • the fans arranged to generate lift and movement of the apparatus may operate at a higher rotational speed that the fans arranged to cause filtration.
  • All or a sub-set of the fans and associated fan housing may be movable with respect to the body of the apparatus. Thus air can be directed in different directions to allow for control of movement of the apparatus.
  • a suitable control arrangement may be used to remotely control the operation of the fans and thus the movement of the apparatus through the air.
  • the filter surfaces may be arranged radially with respect to the tips of the fan blades.
  • a cylindrical housing is defined around each fan.
  • the filter surfaces may be concentric with the rotational axis of a respective fan with the hub of the fan in the centre of the cylinder.
  • the filter surface itself may be in the form of a simple porous surface and/or may include cavities or the like to entrap larger debris.
  • a range of surface porosities may be used.
  • the surfaces may also comprise standard activated carbon filters.
  • the plurality of filter surfaces across the apparatus may be dissimilar i.e. some or all of the plurality of filter surfaces may have differing filter properties. For example one filter may be arranged with an activated carbon filter and another with a coarse porous filter. Thus, a range of filtering may be achieved simultaneously. Alternatively each filter may be selectively operated so that different debris can be filtered perhaps at different locations for example.
  • different filter portions may be used in a single filter surface.
  • the apparatus may be fitted with a pollution detector for example able to measure the density of debris in the air.
  • a filter surface may also be arranged so as to be located over the aperture through which the fan pushes and/or pulls air i.e. the surface is located axially with respect to the fan.
  • each filter may be in the form of a detachable assembly.
  • the filters may for example be independently changed or changed as a single unit thus requiring only 1 action to change the filters of the apparatus.
  • the filter surfaces may be located in a housing arranged to hold and support the filter surface.
  • the housing may in turn have a coupling allowing the housing to be selectively coupled and decoupled from the apparatus. Any suitable coupling could be used including quick release couplings, latch couplings or even Velcro couplings.
  • the fans may be arranged in any suitable configuration.
  • the fans may be arranged in a ring shape defining a central region to accommodate a battery supply and control arrangement.
  • the movement and filtration tasks may be divided between sub-sets of fans.
  • one sub-set of the fans may be configured to provide vertical lift to the apparatus and another sub-set may be arranged to filter air.
  • a method of filtering a volume of contaminated air comprising directing one or more filtering apparatuses as described herein into the volume of contaminated air so as to collect contaminants from said volume.
  • the debris may be conveniently collected from a remote location and returned to a contamination collection location where the filters may be conveniently cleaned or replaced by means of the couplings described above.
  • the contamination collection location may be a landing site or docking station arranged to receive the filter arrangement.
  • Figure 1 shows a base view of the air filtering or purification apparatus
  • Figure 2 is an orthogonal view of the apparatus;
  • Figure 3 also shows two positions for the filter surfaces according to the apparatus;
  • FIG 4 shows an alternative arrangement of housing according to an embodiment of the invention
  • Figures 5, 6 and 7 show additional views of the apparatus
  • Figure 8 shows a schematic of a building in which the apparatus may be deployed.
  • Figure 1 shows a base view of the air filtering or purification apparatus 1 according to an invention described herein.
  • the apparatus comprises a plurality of circular housings 2a - 2h arranged in a generally ring configuration around a central region 3.
  • Each housing 2a-2h is connected to adjacent housings to form a rigid body 4.
  • Each of the housings comprises a centrally located propeller or fan 5 which in the embodiment shown has a pair of fan or propeller blades.
  • Each propeller or fan 5 is arranged to rotate about a hub 6 which is centrally located with respect to the circular housing.
  • the fan blades rotate within the circular opening defined within the housing as shown in figure 1 .
  • the hub 6 may comprise an electrically operated motor (not shown) which causes the blades of the fan to rotate.
  • Each hub is supported and connected to the central region 3 by an arm 7.
  • the arm 7 may comprise the electrical wiring needed to power the motor.
  • the motor may be located in a suitable housing within the central region 3.
  • the arms 7 may incorporate a drive train communicating rotational movement to the hub.
  • the hub may in turn comprise suitable gearing to convert the rotation within the arm to rotation of the fan blades.
  • the central region 3 comprises a battery power supply (not shown) and controller (not shown).
  • the controller may be located elsewhere in the air filtering or purification apparatus.
  • the controller is configured to receive signals from a remote control unit to selectively and independently control each of the fans (discussed further below).
  • a remote control unit to selectively and independently control each of the fans (discussed further below).
  • Figure 2 is an orthogonal view of the apparatus. As shown in figure 2 the apparatus comprises an upper ring 8 of housings 2a - 2h and a lower ring 23 of housings 24a - 24h. In the example shown in figure 2, the lower ring 23 of housings 24a - 24h is used for support and protection of the fans. In other examples, the housings 24a - 24h could be used for further filters.
  • Figure 2 also illustrates the support legs 9 which provide the support when the apparatus lands and protects the body and fans from damage.
  • Figure 2 also shows one of the filtration surfaces 10 which are described in more detail with reference to figure 3.
  • Figure 3 is a cross-section through one of the housings (2a) and shows the fan 5 and hub 6 located centrally with respect to the axis x of the housing. The fan blades rotate about the axis x-x.
  • one or more of the fans may be inclined to the vertical by a predetermined angle a to improve the stability of the apparatus in flight.
  • FIG. 3 also shows two positions for the filter surfaces which may be employed independently or simultaneously i.e. each housing 2a may incorporate both an axial filter surface and a radial filter surface.
  • the axial filter surface 10 (also shown in figure 2) is located across the upper aperture of the housing 2a and comprises a porous membrane which has a predetermined porosity i.e. the holes in the filter are a predetermined size.
  • the filtration surface 10 is located in a direction further along the axis x-x with respect to the housing 2a in order to allow the fans access to make-up air.
  • the axial filter serves three purposes:
  • the axial filter prevents any large objects being ingested into the housing by the airflow created by the rotating fan. This advantageously prevents damage to the fan blades and allows the apparatus to move through zones containing larger airborne debris;
  • the axial filter can act as a first coarse filter to collect and entrap larger debris contained within the air through which the apparatus is directed. This provides a first step filtering action.
  • the axial filter acts as a fan cover to protect the fan in the event of, for example, collisions.
  • the axial filter may be a simple wire mesh or gauze for example.
  • the axial filter must not be such that it prevents airflow passing through the filter surface, particularly for the fans that are functioning to provide the desired lift.
  • some housings 2a - 2h may be provided with finer filter surfaces than others. More specifically, housing that are configured to provide lift may comprise a coarser filter surface than housings that are configured to provide filtration. Similarly the fans may be configured to operate at different rotational speeds.
  • the second filtration surface is the radial filtration surface 1 1 which is also shown in figure 3.
  • the high fan speeds causes high speed vortices and circulating air flows within the housings. This air flow causes the air to be forced against and to pass over the inner surfaces 1 1 of the housing. This advantageously allows a second filtration action to be established.
  • the radial filtration surface 1 1 may comprise protuberances or entrapment recesses to collect a finer level of airborne debris.
  • the surface may comprise an activated carbon surface to filter the air passing over it.
  • An activated carbon layer on the surface of the radial filtration surface may remove debris by means of chemical absorption. Such an arrangement allows for extremely small contaminants to be collected or filtered from the zone through which the apparatus passes.
  • Figure 4 shows an alternative arrangement of housing 2a. In figure 4 a single wall of the housing is shown.
  • the fan 5 causes air to flow in a vertical direction (shown by arrows 12). As well as vertical movement of the air vortices 13 are also generated by the air flow around the tip of the blade 5.
  • the housing 2a comprises a plurality of apertures 13 which are formed by vanes 14 located on the inner surface of the housing 2a.
  • the vanes are inclined such that airborne debris 15 entrained within the airflow is captured by the vanes and directed to a hopper or collection portion 16 of the housing 2a.
  • FIG. 5 shows plan and side views of the apparatus respectively.
  • Figure 7 also illustrates the inclusion of the fan 5 with respect to the vertical. In the embodiment shown the angle is shown by reference a.
  • FIG 8 shows as schematic of the apparatus in use.
  • a building 17 is shown in which a cloud or zone of contamination 18 has formed and which requires filtration.
  • the filtering apparatus 1 is first positioned on a docking station 19 which provides recharging facilities and filter changing facilities for the apparatus. Filters are cleaned periodically or during every visit to the docking station 19 during the battery replacement and tool changing process. Cleaning is carried out using a vacuum cleaner or the like.
  • multiple vacuum cleaners may be used, i.e. one for each filter.
  • one vacuum cleaner may be used which moves around the robot and cleans each of the filters. This could be implemented with a carousel on the roof or floor of the dock.
  • the filtering unit itself can move around its own axis so all the filters can be cleaned.
  • the vacuum cleaner or vacuum cleaners can also include an arm and joints which help with the cleaning of the filters in the bottom of the unit.
  • a brush may be used in the cleaning process. The brush may be attached to a robot hand.
  • Changing the filters can happen about once in a month and it will be implemented with a robot hand (or some other changing system) by detaching the whole frame and replacing it with a new one. Also single filters may be replaced using the same system.
  • the apparatus 1 is activated and directed either manually by an individual or automatically towards the zone 18 along flight path 20.
  • the apparatus passes through the zone 18 collecting debris using the axial and/or radial filter surfaces (depending for example on the contamination found) and then returns along flight path 21 to the docking station 19.
  • the filters can then be changed/cleaned and the same flight path route repeated.
  • a plurality of filtering apparatuses 1 may be used sequentially or in parallel to detect and filter airborne contamination from within the building or other space.
  • Sensors 22 could, in another embodiment, detect airborne contamination and send data to the controller of the apparatus which can then be used to automatically remove the detected contamination without user control i.e. an automated air filtration system.
  • the severity or danger associated with multiple zones 18 could be determined by such detectors 22 and the zone prioritised for filtration. For example, a human health danger caused by contamination may be filtered as a priority over other
  • the apparatus 1 itself may contain sensors for detecting airborne contamination.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un appareil de filtration d'air comportant plusieurs surfaces de filtre distinctes. Une surface de filtre comprend un ventilateur associé à ladite surface et disposé de sorte à entraîner le passage d'air sur ou à travers la surface de filtre. Au moins certains ventilateurs de la pluralité peuvent fonctionner pour générer une portance suffisante pour mettre l'appareil en suspension dans l'air.
PCT/EP2018/062242 2017-05-12 2018-05-11 Appareil de filtration d'air Ceased WO2018206782A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1707693.6A GB2562312A (en) 2017-05-12 2017-05-12 Air purification
GB1707693.6 2017-05-12

Publications (1)

Publication Number Publication Date
WO2018206782A1 true WO2018206782A1 (fr) 2018-11-15

Family

ID=59201556

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/062242 Ceased WO2018206782A1 (fr) 2017-05-12 2018-05-11 Appareil de filtration d'air

Country Status (2)

Country Link
GB (1) GB2562312A (fr)
WO (1) WO2018206782A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111874220A (zh) * 2019-05-03 2020-11-03 波音公司 多旋翼旋翼机
JP2021021517A (ja) * 2019-07-25 2021-02-18 エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ 飛行体、飛行体システム、飛行体による空気清浄方法及び飛行体による空気清浄のためのプログラム
KR20230126156A (ko) * 2022-02-22 2023-08-29 김혜숙 드론
EP4175735A4 (fr) * 2021-05-05 2024-07-31 Kevin L. Thomas Capital LLC Capture de gaz atmosphérique avec un système distribué

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220305431A1 (en) * 2019-06-07 2022-09-29 Harshul Thakkar Method and apparatus for removing greenhouse gases and air pollutants from the atmosphere
CN114383249B (zh) * 2021-12-29 2023-08-15 无锡德润电子有限公司 等离子空气净化器

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Publication number Priority date Publication date Assignee Title
JPH08131883A (ja) * 1994-11-08 1996-05-28 Matsushita Electric Ind Co Ltd 集塵機
US20120255439A1 (en) * 2011-04-08 2012-10-11 Empire Technology Development Llc Flying Air Purifier
WO2016192015A1 (fr) * 2015-06-01 2016-12-08 深圳市大疆创新科技有限公司 Structure de filtre, véhicule aérien sans pilote, et objet mobile
WO2017043599A1 (fr) * 2015-09-09 2017-03-16 株式会社クリエイティブテクノロジー Épurateur d'air

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US9555882B2 (en) * 2015-03-30 2017-01-31 The Boeing Company Airborne system and method for removing pollutants from a volume of air

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Publication number Priority date Publication date Assignee Title
JPH08131883A (ja) * 1994-11-08 1996-05-28 Matsushita Electric Ind Co Ltd 集塵機
US20120255439A1 (en) * 2011-04-08 2012-10-11 Empire Technology Development Llc Flying Air Purifier
WO2016192015A1 (fr) * 2015-06-01 2016-12-08 深圳市大疆创新科技有限公司 Structure de filtre, véhicule aérien sans pilote, et objet mobile
WO2017043599A1 (fr) * 2015-09-09 2017-03-16 株式会社クリエイティブテクノロジー Épurateur d'air

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111874220A (zh) * 2019-05-03 2020-11-03 波音公司 多旋翼旋翼机
EP3741670A3 (fr) * 2019-05-03 2021-02-24 The Boeing Company Giravion à rotors multiples
US11673657B2 (en) 2019-05-03 2023-06-13 The Boeing Company Multi-rotor rotorcraft
JP2021021517A (ja) * 2019-07-25 2021-02-18 エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ 飛行体、飛行体システム、飛行体による空気清浄方法及び飛行体による空気清浄のためのプログラム
EP4175735A4 (fr) * 2021-05-05 2024-07-31 Kevin L. Thomas Capital LLC Capture de gaz atmosphérique avec un système distribué
KR20230126156A (ko) * 2022-02-22 2023-08-29 김혜숙 드론
KR102597932B1 (ko) 2022-02-22 2023-11-02 김혜숙 드론

Also Published As

Publication number Publication date
GB201707693D0 (en) 2017-06-28
GB2562312A (en) 2018-11-14

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