NL2029767B1 - Vertical air cleaning device - Google Patents

Vertical air cleaning device Download PDF

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Publication number
NL2029767B1
NL2029767B1 NL2029767A NL2029767A NL2029767B1 NL 2029767 B1 NL2029767 B1 NL 2029767B1 NL 2029767 A NL2029767 A NL 2029767A NL 2029767 A NL2029767 A NL 2029767A NL 2029767 B1 NL2029767 B1 NL 2029767B1
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NL
Netherlands
Prior art keywords
air
cleaning device
air cleaning
vertical
filter
Prior art date
Application number
NL2029767A
Other languages
Dutch (nl)
Inventor
Angenent Mark
Original Assignee
Duux Holding B V
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 Duux Holding B V filed Critical Duux Holding B V
Priority to NL2029767A priority Critical patent/NL2029767B1/en
Priority to PCT/NL2022/050618 priority patent/WO2023091001A1/en
Application granted granted Critical
Publication of NL2029767B1 publication Critical patent/NL2029767B1/en

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Classifications

    • 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
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • 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
    • F24F8/80—Self-contained air purifiers
    • 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
    • F24F2221/36—Modules, e.g. for an easy mounting or transport

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The present invention is in the field of domestic articles for filtering air, which therewith provides clean or purified air by removing contaminants from the air before releasing the air again. It relates to an air cleaning device comprising a ventilator or the like and an air filter, with improved air flow, design freedom, efficient and at limited costs. The device is typically a stand-alone device.

Description

P100591NL00
Vertical air cleaning device
FIELD OF THE INVENTION
The present invention is in the field of domestic articles for filtering air, which therewith provides clean or purified air by removing contaminants from the air before releas- ing the air again. It relates to an air cleaning device comprising a ventilator or the like and an air filter, with improved air flow, improved design freedom, improved efficiency, and lim- ited costs. The device is typically a stand-alone device.
BACKGROUND OF THE INVENTION
The present invention is in the field of an air cleaning device. Such a device removes contaminants from the air, such as in a room, workplace, hospitals, or otherwise, and 1s aimed at improving indoor air quality. A large variety of contaminants can be removed, such as dust, allergens, pollen, particles in general, smoke, and so on. They are considered benefi- cial to people suffering from allergy sufferers and asthmatics. Also in certain cities, with increased smog or air pollution levels an indoor environment may be properly cleaned. The present invention relates primarily to a stand-alone unit of typically limited size. For certain applications a high-grade filter may be used, such as an high efficiency particulate air (HEPA) filter.
In general, there are two types of air purifying techniques, namely active and passive.
Active air purifiers release negatively charged 10ns into the air, causing pollutants to stick to surfaces, while passive air purification units use air filters to remove pollutants. The present invention relates mainly to a passive system. Passive purifiers are more efficient since all the dust and particulate matter is permanently removed from the air and collected in the filters.
However, filters may need to be cleaned on a regular basis.
A problem with prior art cleaning devices is that the offer a limit design freedom.
Such typically results in more complex systems with higher associated costs. A further prob- lem may be that an efficiency is limited, also in view of a flow path of air. In some cases, also the amount of air flow provided is too small, at least partly because the device can not be positioned properly in sometimes smaller indoor environments, such as sleeping rooms.
The present invention therefore relates to an improved air cleaning device and further aspects thereof, which overcomes one or more of the above disadvantages, without compro- mising functionality and advantages.
SUMMARY OF THE INVENTION
It is an object of the invention to overcome one or more limitations of the air cleaning device of the prior art and at the very least to provide an alternative thereto. The present in- vention relates to a new type of air cleaning device, which typically is a vertical positioned device. It primarily relates to a passive air cleaning device, though certain active elements may be added. The present vertical air cleaning device (1) comprises three main visible parts, namely a bottom part (10), a longitudinal central part (20), and a top part (30). The bottom part comprises a bottom air inlet (11) with openings (12) at a bottom side thereof, incorporated in the bottom part a ventilator (14) providing a first air flow from said air inlet to the central part, at a top side (15) of the bottom part a constricted section (16) providing a
Venturi effect. The central part comprises a substantially closed housing (21), the housing enclosing and incorporating at least one air filter (22), wherein the housing comprises a cen- tral air inlet (23) at a bottom side (24) thereof, which central air inlet is typically located pe- ripheral. The top part comprises a top air inlet opening (31) located above the at least one air filter, a top outlet (32) comprising at least one opening (33), incorporated in the top part a fan (34) providing a second air flow from said top air inlet to the top air outlet. The bottom air inlet, central air inlet, air filter, top air inlet, and top air outlet are in fluid connection with one and another. Therewith two air flows are provided, wherein the Venturi flow is consid- ered to support the second flow. Typically, the Venturi flow may be considered as a first flow for starting up the second flow. As such the present air cleaning device is found to pro- vide higher throughputs, in terms of m°/hour, under limited power consumption, and yet providing sufficient cleaning. In addition there is no need for air openings at a side of the cleaning device. The top fan may as a consequence provide a relatively lighter performance, as it is supported by the bottom ventilator and the Venturi effect. As a result the present de- vice is relatively silent, typically < 60 dB, and in particular < 40 dB. The present device may be provided with at least one control, for regulating an air flow, and in particular with at least one control for adapting the performance of the bottom ventilator in view of the performance of the top fan, and vice versa. The at least one control may be in the form of an incorporated control, such as a printed circuit board, in the form of an external adaptable control, such as a knob, or a combination thereof.
The present invention provides a solution to one or more of the above mentioned problems and overcomes drawbacks of the prior art.
Advantages of the present description are detailed throughout the description.
DETAILED DESCRIPTION OF THE INVENTION
In an exemplary embodiment of the present air cleaning device the constricted section (16) has an inner constricted diameter (17) 1-20% larger than an outer diameter (25) of the air filter, in particular 2-15% larger, such as 5-10% larger.
In an exemplary embodiment of the present air cleaning device the air filter comprises at least one vertical lamella (27).
In an exemplary embodiment of the present air cleaning device the Vertical air clean- ing device comprises at least one bottom support (18) , the bottom support providing air flow to the bottom air inlet, whereby the device is adapted to be mounted vertically, such as on a surface.
In an exemplary embodiment of the present air cleaning device the housing has an in- ner housing diameter (24) 10-150% larger than an outer diameter (25) of the air filter, in particular 20-100% larger, such as 50-70% larger.
In an exemplary embodiment of the present air cleaning device the central part is sub- stantially closed at a top side thereof.
In an exemplary embodiment of the present air cleaning device the central part, bot- tom, and top part, have a cross-sectional shape selected from circular, ellipsoidal, multi- gonal, such as square, hexagonal, octagonal, and decagonal, and combinations thereof.
In an exemplary embodiment of the present air cleaning device the fan 14,34 is an im- pellor.
In an exemplary embodiment of the present air cleaning device the top part comprises a grid (35) at a top side thereof.
In an exemplary embodiment of the present air cleaning device the bottom part com- prises a grid (15) at a bottom side thereof, and optionally a grid (15) at a top side thereof.
In an exemplary embodiment of the present air cleaning device the air filter is a HEPA filter.
In an exemplary embodiment of the present air cleaning device the device has a height of 15-100 cm, in particular 20-80 cm, more in particular 40-70 cm.
In an exemplary embodiment of the present air cleaning device the closed housing also encloses the top part, and wherein the closed housing provides a top (28) to the central part.
In an exemplary embodiment of the present air cleaning device the at least one air filter is provided with an absorbent, such as a chemical absorbent, such as activated carbon.
In an exemplary embodiment the present air cleaning device further comprises an UV- radiation generator, in particular a UV-generator with an optical transparent window, prefer- ably incorporated upstream or downstream of the at least one air filter, in particular inside the at least one air filter or directly outside the at least one air filter.
In an exemplary embodiment of the present air cleaning device the UV-radiation gen- erator radiates at a frequency of 200-280 nm, preferably with at least one peak frequency, preferably a peak at 253.7 nm.
In an exemplary embodiment of the present air cleaning device the power density of the UV-generator is from 50-500 W/m?.
In an exemplary embodiment of the present air cleaning device a size of the generator window is from 50-250 cm?.
In an exemplary embodiment of the present air cleaning device the window comprises at least one lens, such as a Fresnel lens,
The invention will hereafter be further elucidated through the following examples which are exemplary and explanatory of nature and are not intended to be considered limit- ing of the invention. To the person skilled in the art it may be clear that many variants, being obvious or not, may be conceivable falling within the scope of protection, defined by the present claims.
FIGURES
Figures 1-2 show cross-sections of the present device.
Figure 3 shows a built-up of the present device.
Figures 4-7 show front views of the present device.
DETAILED DESCRIPTION OF FIGURES
In the figures:
In the figures: 1 vertical air cleaning device bottom part 11 bottom air inlet 12 bottom opening 10 13 bottom side 14 ventilator gnid/top side bottom part 16 constricted section bottom part 17 inner constricted diameter 15 18 bottom support central part 21 closed housing 22 air filter 23 central air inlet with constricted diameter 20 24 housing inner diameter filter outer diameter 26 constricted section central part 27 vertical lamella of air filter 28 top central part 25 30 top part 31 top air inlet 32 top air outlet 33 top opening 34 fan grid
Figures 1-2 show cross-sections of the present device. In figure 1 a central air flow as well as a peripheral air flow 1s shown. The central air flow enters at a bottom side 11,12 of the present device, and is driven by the lower ventilator 14. The peripheral air flow enters at a bottom side of the central part, goes through the air filter, leaves the present device at a top 35 opening, and is driven by top fan 34. The peripheral air flow flows externally of the filter 22 in a space between the closed housing and the filter, flows through the filter, and flows to the top part. Thereto the outer diameter of the filter 25 is smaller than the inner diameter 24 of the housing. In order to provide a Venture effect constriction member 16 at a bottom side and constriction member 23 at a bottom of the central part are provided. Figure 2 shows a cross-section of the present device.
Figure 3 shows a built-up of the present device. Therein the top opening cap 33, the closed housing 21, the top fan 34, the filter 22, the central air inlet 23, bottom fan 14, and bottom part 10 are shown. 5 Figures 4-7 show front views of the present device. Fig. 4 shows a frontal view with an air inlet at the bottom part and at the central part being visible. Figure 5 shows an en- larged section of the central air inlet. Figure 6 shows the restriction of the central air inlet, and bottom air inlet, whereas fig. 7 shows the top air outlet and lower air outlet.
The next section is added to support the search, and the section thereafter is consid- ered to be a full translation thereof into Dutch. 1. Vertical air cleaning device (1) comprising a bottom part (10), a longitudinal central part (20), and a top part (30), wherein the bottom part comprises a bottom air inlet (11) with openings (12) at a bottom side thereof, incorporated in the bottom part a ventilator (14) providing a first air flow from said air inlet to the central part, at a top side (15) of the bottom part a con- stricted section (16) providing a Venturi effect, wherein the central part comprises a substantially closed housing (21), the hous- ing enclosing and incorporating at least one air filter (22), wherein the housing comprises a central air inlet (23) at a bottom side thereof, wherein the top part comprises a top air inlet opening (31) located above the at least one air filter, a top outlet (32) comprising at least one opening (33), incorporated in the top part a fan (34) providing a second air flow from said top air inlet to the top air outlet, wherein the bottom air inlet, central air inlet, air filter, top air inlet, and top air outlet are in fluid connection with one and another. 2. Vertical air cleaning device according to embodiment 1, wherein the constricted sec- tion (16) has an inner constricted diameter (17) 1-20% larger than an outer diameter (25) of the air filter. 3. Vertical air cleaning device according to embodiment 1 or 2, wherein the air filter comprises at least one vertical lamella (27). 4. Vertical air cleaning device according to any of embodiments 1-3, wherein the Vertical air cleaning device comprises at least one bottom support (18) , the bottom support providing air flow to the bottom air inlet, whereby the device is adapted to be mounted vertically, such as on a surface. 5. Vertical air cleaning device according to any of embodiments 1-4, wherein the housing has an inner housing diameter (24) 10-150% larger than an outer diameter (25) of the air filter. 6. Vertical air cleaning device according to any of embodiments 1-4, wherein the central part is substantially closed at a top side thereof.
7. Vertical air cleaning device according to any of embodiments 1-6, wherein the central part, bottom, and top part, have a cross-sectional shape selected from circular, ellip- soidal, multigonal, such as square, hexagonal, octagonal, and decagonal, and combi- nations thereof.
8. Vertical air cleaning device according to any of embodiments 1-7, wherein the fan (14,34) is an impellor.
9. Vertical air cleaning device according to any of embodiments 1-8, wherein the top part comprises a grid (35) at a top side thereof.
10. Vertical air cleaning device according to any of embodiments 1-9, wherein the bottom part comprises a grid (15) at a bottom side thereof, and optionally a grid (15) at a top side thereof.
11. Vertical air cleaning device according to any of embodiments 1-9, wherein the air filter is a HEPA filter.
12. Vertical air cleaning device according to any of embodiments 1-11, wherein the device has a height of 15-100 cm.
13. Vertical air cleaning device according to any of embodiments 1-12, wherein the closed housing also encloses the top part, and wherein the closed housing provides a top (28) to the central part.
14. Vertical air cleaning device according to any of embodiments 1-13, wherein the at least one air filter is provided with an absorbent, such as a chemical absorbent, such as activated carbon.
15. Vertical air cleaning device according to any of embodiments 1-14, further comprising an UV-radiation generator, in particular a UV-generator with an optical transparent window, preferably incorporated upstream or downstream of the at least one air filter, in particular inside the at least one air filter or directly outside the at least one air filter.
16. Vertical air cleaning device according to 15, wherein the UV-radiation generator radiates at a frequency of 200-280 nm, preferably with at least one peak frequency, preferably a peak at 253.7 nm, and/or wherein the power density of the UV-
generator is from 50-500 W/m?, and/or wherein a size of the generator window is from 50-250 cm?, and/or wherein the window comprises at least one lens, such as a Fresnel lens.

Claims (16)

Conclusies:Conclusions: 1. Verticaal luchtreinigingsapparaat (1) omvattend een onderstuk (10), een longitudinaal middenstuk (20), en een bovenstuk (30), waarin het onderstuk omvat een onderste luchtinlaat (11) met openingen (12) aan een onderzijde daarvan, ingebouwd in het onderstuk een ventilator (14) die zorgt voor een eerste luchtstroom van genoemde luchtinlaat naar het middenstuk, aan een bovenzijde (15) van het onderstuk een vernauwde sectie (16) die zorgt voor een Venturi-effect, waarin het middenstuk een nagenoeg gesloten behuizing (21) omvat, waarin zich ten minste één luchtfilter (22) bevindt, en waarin de behuizing aan een onderzijde een centrale luchtinlaat (23) omvat, waarin het bovenstuk omvat een bovenste luchtinlaatopening (31) die zich boven het ten minste één luchtfilter bevindt, een bovenste luchtuitlaat (32) die ten minste één opening (33) bevat, in het bovenstuk een ventilator (34) die een tweede luchtstroom van voornoemde bovenste luchtinlaat naar de bovenste luchtuitlaat verzorgt, waarbij de onderste luchtinlaat, de centrale luchtinlaat, het luchtfilter, de bovenste luchtinlaat en de bovenste luchtuitlaat in vloeistofverbinding met elkaar staan.A vertical air cleaning apparatus (1) comprising a bottom part (10), a longitudinal middle part (20), and a top part (30), wherein the bottom part comprises a lower air inlet (11) with openings (12) at a bottom thereof, built into the bottom part a fan (14) which provides a first airflow from said air inlet to the middle part, at an upper side (15) of the bottom part a narrowed section (16) which provides a Venturi effect, in which the middle part forms a substantially closed housing (21) in which at least one air filter (22) is located, and in which the housing comprises a central air inlet (23) at a bottom, in which the top comprises an upper air inlet opening (31) located above the at least one air filter , an upper air outlet (32) containing at least one opening (33), in the upper part a fan (34) providing a second airflow from said upper air inlet to the upper air outlet, wherein the lower air inlet, the central air inlet, the air filter , the upper air inlet and the upper air outlet are in fluid communication with each other. 2. Verticaal luchtreinigingsapparaat volgens conclusie 1, waarbij de vernauwde sectie (16) een binnenste vernauwde diameter (17) heeft die 1-20% groter is dan een buiten- diameter (25) van het luchtfilter.The vertical air cleaning apparatus according to claim 1, wherein the narrowed section (16) has an inner narrowed diameter (17) which is 1-20% larger than an outer diameter (25) of the air filter. 3. Verticaal luchtreinigingsapparaat volgens conclusie 1 of 2, waarbij het lucht- filter ten minste één verticale lamel (27) omvat.The vertical air cleaning apparatus according to claim 1 or 2, wherein the air filter comprises at least one vertical vane (27). 4. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-3, waarbij het verticaal luchtreinigingsapparaat ten minste één bodemsteun (18) omvat, waarbij de bo- demsteun zorgt voor de luchtstroom naar de onderste luchtinlaat, waardoor het apparaat ge- schikt is om verticaal te worden gemonteerd, zoals op een oppervlak.The vertical air cleaning device according to any one of claims 1 to 3, wherein the vertical air cleaning device comprises at least one bottom support (18), the bottom support providing the airflow to the lower air inlet, whereby the device is suitable for vertical operation. be mounted, such as on a surface. 5. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-4, waarbij de behuizing een binnendiameter (24) heeft die 10-150% groter is dan een buitendiameter (25) van het luchtfilter.A vertical air cleaning device according to any one of claims 1-4, wherein the housing has an inner diameter (24) that is 10-150% larger than an outer diameter (25) of the air filter. 6. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-4, waarbij het middenstuk in hoofdzaak gesloten is aan een bovenzijde daarvan.A vertical air cleaning apparatus according to any one of claims 1 to 4, wherein the center piece is substantially closed at an upper side thereof. 7. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-6, waarbij het middenstuk, het onderstuk, en bovenstuk, een dwarsdoorsnede hebben gekozen uit rond, ellipsoidaal, veelhoekig, zoals vierkant, zeshoekig, achthoekig, en tienhoekig, en combina- ties daarvan.A vertical air purifier according to any one of claims 1 to 6, wherein the center, base, and top have a cross-section selected from round, ellipsoidal, polygonal, such as square, hexagonal, octagonal, and decagonal, and combinations thereof. 8. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-7, waarbij de ventilator (14,34) een impeller is.A vertical air cleaning apparatus according to any one of claims 1 to 7, wherein the fan (14,34) is an impeller. 9. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-8, waarbij het bovenstuk een rooster (35) aan een bovenzijde daarvan omvat.A vertical air cleaning device according to any one of claims 1 to 8, wherein the top includes a grille (35) on an upper side thereof. 10. 10. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-9,10. Vertical air cleaning device according to any one of claims 1-9, waarbij het onderstuk een rooster (15) aan de onderzijde en optioneel een rooster (15) aan de bovenzijde omvat.wherein the bottom part comprises a grille (15) at the bottom and optionally a grille (15) at the top. 11. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-9, waarbij het luchtfilter een HEPA-filter is.The vertical air cleaning apparatus according to any one of claims 1 to 9, wherein the air filter is a HEPA filter. 12. Verticaal luchtreinigingsapparaat volgens één van de conclusies 1-11, waarbij het apparaat een hoogte heeft van 15-100 cm.A vertical air cleaning device according to any one of claims 1-11, wherein the device has a height of 15-100 cm. 13. Verticaal luchtreinigingsapparaat volgens een van de conclusies 1-12, waarin de gesloten behuizing ook het bovenstuk omsluit, en waarin de gesloten behuizing een bo- venkant (28) aan het middenstuk verschaft.A vertical air cleaning apparatus as claimed in any one of claims 1 to 12, wherein the closed housing also encloses the top, and wherein the closed housing provides a top (28) to the center. 14. Verticaal luchtreinigingsapparaat volgens één van de conclusies 1-13, waarbij het tenminste één luchtfilter is voorzien van een absorberend middel, zoals een chemisch absorberend middel, zoals geactiveerde kool.A vertical air cleaning device according to any one of claims 1-13, wherein the at least one air filter is provided with an absorbent, such as a chemical absorbent, such as activated carbon. 15. Verticaal luchtreinigingsapparaat volgens één van de conclusies 1-14, verder omvattend een UV-stralingsgenerator, in het bijzonder een UV-generator met een optisch transparant venster, bij voorkeur ingebouwd stroomopwaarts of stroomafwaarts van het ten minste één luchtfilter, in het bijzonder binnen het ten minste één luchtfilter of direct buiten het ten minste één luchtfilter.A vertical air cleaning device according to any one of claims 1-14, further comprising a UV radiation generator, in particular a UV generator with an optically transparent window, preferably built in upstream or downstream of the at least one air filter, in particular within the at least one air filter or immediately outside the at least one air filter. 16. Verticaal luchtreinigingsapparaat volgens conclusie 15, waarbij de UV- stralingsgenerator straalt met een frequentie van 200-280 nm, bij voorkeur met ten minste één piekfrequentie, bij voorkeur een piek bij 253,7 nm, en/of waarbij de vermogensdichtheid van de UV-generator 50-500 W/m? bedraagt, en/of waarbij een grootte van het venster van de generator 50-250 cm? bedraagt, en/of wanneer het venster ten minste één lens omvat, zoals een Fresnel-lens.A vertical air cleaning device according to claim 15, wherein the UV radiation generator radiates with a frequency of 200-280 nm, preferably with at least one peak frequency, preferably a peak at 253.7 nm, and/or wherein the power density of the UV generator 50-500 W/m? and/or where the size of the generator window is 50-250 cm? and/or when the window includes at least one lens, such as a Fresnel lens.
NL2029767A 2021-11-16 2021-11-16 Vertical air cleaning device NL2029767B1 (en)

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NL2029767A NL2029767B1 (en) 2021-11-16 2021-11-16 Vertical air cleaning device
PCT/NL2022/050618 WO2023091001A1 (en) 2021-11-16 2022-11-02 Vertical air cleaning device

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533460C2 (en) * 2008-08-26 2010-10-05 Swefil Ab Unit intended for purification of air in rooms with large air volumes
EP3211347A1 (en) * 2016-02-26 2017-08-30 LG Electronics Inc. Air cleaner
US20190015780A1 (en) * 2016-03-15 2019-01-17 Dalian University Of Technology Multifunctional air purifying device for removing indoor pollution by thermal decomposition
WO2021153855A1 (en) * 2020-01-30 2021-08-05 엘지전자 주식회사 Air purifier and method for controlling same
EP3875768A1 (en) * 2020-03-05 2021-09-08 LG Electronics Inc. Air purifier
US20210341370A1 (en) * 2018-10-18 2021-11-04 Smart Material Printing B.V. Particle filter with ultrasound device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533460C2 (en) * 2008-08-26 2010-10-05 Swefil Ab Unit intended for purification of air in rooms with large air volumes
EP3211347A1 (en) * 2016-02-26 2017-08-30 LG Electronics Inc. Air cleaner
US20190015780A1 (en) * 2016-03-15 2019-01-17 Dalian University Of Technology Multifunctional air purifying device for removing indoor pollution by thermal decomposition
US20210341370A1 (en) * 2018-10-18 2021-11-04 Smart Material Printing B.V. Particle filter with ultrasound device
WO2021153855A1 (en) * 2020-01-30 2021-08-05 엘지전자 주식회사 Air purifier and method for controlling same
EP3875768A1 (en) * 2020-03-05 2021-09-08 LG Electronics Inc. Air purifier

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