EP3306218A1 - Luftreiniger - Google Patents

Luftreiniger Download PDF

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Publication number
EP3306218A1
EP3306218A1 EP16192549.0A EP16192549A EP3306218A1 EP 3306218 A1 EP3306218 A1 EP 3306218A1 EP 16192549 A EP16192549 A EP 16192549A EP 3306218 A1 EP3306218 A1 EP 3306218A1
Authority
EP
European Patent Office
Prior art keywords
inlet
filter
air purifying
purifying device
air
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.)
Withdrawn
Application number
EP16192549.0A
Other languages
English (en)
French (fr)
Inventor
Harshla Jairaj BHAJAK
Anil HANKARE
Vidyadhar Vishnu MAGADUM
Ramasubramaniam Rajagopal
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.)
Unilever NV
Original Assignee
Unilever NV
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 Unilever NV filed Critical Unilever NV
Priority to EP16192549.0A priority Critical patent/EP3306218A1/de
Publication of EP3306218A1 publication Critical patent/EP3306218A1/de
Withdrawn legal-status Critical Current

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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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • 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
    • 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
    • F24F8/167—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 catalytic reactions

Definitions

  • the present invention relates to an air purifying device and more particularly to an air purifying device for homes that may be operated in either the fan mode or air purifying mode.
  • CN2135740 (1993 ), discloses an indoor air purifying fan that comprises an outer shell, blades of a ventilating fan, a miniature motor and a purifying and filtering core.
  • the purifying and filtering core includes purifying and filtering meshes made of fibrous activated carbon materials. After the air passes through the purifying and filtering core, harmful particles, any viruses, and odour are absorbed by the filtering materials and thus, the air is then purified.
  • CN1721046 (2006 ) also discloses an air cleaning fan with multiple filtering layers.
  • KR20120041315 discloses an electric air purifying fan to maintain clean indoor air by providing triple air purifiers including an oxygen purifying filter, a honeycomb-shaped filter, and an air purifying filter. These air purifying fans will function only as air purifiers and cannot act as a conventional fan to provide high rates of air flow as the filters will reduce the passage of air.
  • Some air purifiers have introduced systems which allow for the filter to be shifted from its normal position perpendicular to the flow path for when levels of contamination are determined to be sufficiently low.
  • a system is shown in EP 1434012 A2 .
  • the filter can be opened by rotating or sliding so that the flowpath is at least partially open.
  • air still travels by the filter, which can cause dust and other particles collected in the filter to dislodge and flow into the airstream. This is particularly prone to happen when the filter is rotated to be parallel to the air flow path through the air purifier.
  • an air purifying device comprises a housing with a first inlet and an outlet; a filter within the housing and adjacent to the first inlet; a second inlet in the housing; a fan within the housing to direct air from the first inlet and/or the second inlet to the outlet; and means for selectively opening or closing the second inlet.
  • a second air path may be formed through the device which bypasses the filter and allows the device to be used as a conventional fan.
  • a compact, efficient and easy to use device may act as an air purifying device or a simple fan depending on current needs, and eliminates the need to have separate devices for air purifying and for simple fan based air flow.
  • Being able to run the device in either air purifier mode or fan mode may additionally help the user save energy as compared to running the device continuously in air purifier mode or running two devices.
  • the second inlet comprises a plurality of second inlets in the housing which may be selectively opened or closed. Including a plurality of second inlets allows for easy entry of air into a second flow path for the device to operate in fan mode without having to pull air through the filter, which can result in a slowdown of air and/or noise from the air flowing through the filter or the fan motor having to work harder to pull the air through the filter.
  • the means for selectively opening or closing the second inlet comprises one or more rotatable louvres.
  • these may be doors, covers or anything else that can effectively open or seal one or more second inlets. This allows for or prevents air into the device through the second inlet, thereby determining whether the device is operating in an air purifying mode or in a fan mode.
  • the fan is an electric motor driven fan.
  • a fan may act well for the device to operate as a conventional fan or as an air purifier.
  • the second inlet when the second inlet is open, most of the airflow through the housing flows in the second inlet and out the outlet. This allows air to bypass the filter, making the fan work efficiently as a conventional fan. This also avoids the noise and slowed airflow that flowing through the filter may cause when air purifying is not necessary. Additionally, avoiding air flow through the filter may help preserve the life of the filter and overall system, only requiring the additional work and air flow through the filter when necessary.
  • the device further comprises a sensor to sense the air quality. Sensing air quality allows the device to provide feedback on air quality, thereby making for a more efficient overall system.
  • the sensor may send a signal to change between modes as soon as air purifying is no longer needed.
  • the sensor may indicate to a user, for example, visually or audibly, when a change is needed.
  • a sensor may ensure that a change in mode is performed as soon as necessary, or that a user knows when to change no matter the length of usage, current conditions, etc.
  • the sensor is a particle and/or a gas sensor. Further optionally, the particle and/or gas sensor is selected from volatile organic chemical sensors, inorganic gas sensors, and malodour sensors.
  • the means for selectively opening or closing the second inlet comprises one or more of mechanical, electrical and electromechanical switches.
  • Such switches easily and simply open or close the second inlet to allow a simple switch between air purifying and fan modes.
  • These one or more switches work to operate louvers, doors, etc. which selectively cover or seal the second inlet(s).
  • the filter is a particulate and/or gas filter.
  • the particulate and/or gas filter is selected from one or more of a MERV filter; a HEPA filter; a ULPA filter; a coarse washable filter; a nylon filter; an aluminum mesh filter; an adsorption filter and a catalytic filter.
  • the housing is a rectangular shape with the first inlet opposite the outlet, and the second inlet comprises one or more second inlets on one or more sides of the housing.
  • the means for selectively opening or closing the second inlet comprises one or more of a cover, a switch, a latch and a louvre. These may be operated manually, electrically, or through a number of other means in the art. They would allow for easy and effective covering or opening of the second inlet(s) to promote either air purifying mode with an air flow path through the air filter or fan mode with an air flow path through the second inlet(s) (and little to no air entering and flowing through the filter).
  • the second inlet is located adjacent to the first inlet.
  • This set-up allows for a very compact device. This setup could also work well when the desired air for either filtering or fan flow is in or coming from a certain area.
  • Fig. 1 a shows a perspective front view of a first embodiment of an air purifying device 10.
  • Fig. 1b shows a perspective side view of air purifying device 10
  • Fig. 1c shows a perspective back view of air purifying device 10
  • Fig. 1d shows a cross-sectional view of air purifying device 10
  • Fig. 1e shows a side perspective view of air purifying device 10 with a louver 11 opened
  • Fig. 1f shows a back view of air purifying device 10 with two louvers 11 opened.
  • Air purifying device 10 contains a conventional motor-driven fan 12 and filter 14 inside housing 16.
  • Housing 16 includes front 18, back 20 and sides 22, top 24 and base 26. Sides 22, top 24 and base 26 form a perimeter around air purifying device 10 housing 16.
  • Each side 22 includes louver 11 covering second inlet 28 and latch knob 27.
  • Top includes sensor 30 and control buttons 32, though they could be located at different positions (e.g., on a different side of housing 16) in different embodiments. Airflow is shown by arrows 34.
  • Filter 14 may be one or more filters 14 for removing particles, gas, contaminants and/or other things from the air.
  • filter 14 could comprise one or more of a MERV filter; a HEPA filter; a ULPA filter; a coarse washable filter; a nylon filter; an aluminium mesh filter; an adsorption filter and a catalytic filter.
  • Sensor 30 may be a number of types of sensors, including particle and/or gas sensors, for example, volatile organic chemical sensors, inorganic gas sensors, malodour sensors. Sensor 30 may also be located in a different position than shown and/or additional sensors could be present, located near sensor 30 or at a different location.
  • Control buttons 32 may also include a switch, which may be, for example, a mechanical, electrical or electromechanical switch. The switch may operate to open or close louvers 11 for allowing or preventing airflow through second inlets 28. In lieu of a switch or in addition to a switch, louvers 11 could be manually opened or closed, for example, using latch knobs 27.
  • louvers 11 are opened so that second inlets 28 are exposed. Because the air resistance is much lower through second inlets 28 than through filter 14, most air will flow into air purifying device 10 through second inlets 28 in sides 22 of housing 16 (bypassing filter 14) in this mode. The lower air resistance will also cause a higher flow rate for air purifying device 10 to operate as a conventional fan.
  • Sensor(s) 30 and control buttons 32 may preferably be used to make the transitions from air purifying mode to fan mode and vice versa.
  • sensor 30 could sense when the air in a room has reached a level of sufficient purification (e.g., the contaminants sensed in the air have dropped below a predetermined level). When sensor 30 senses this state, it could send a signal to the switch to open louvers 11, allowing air purifying device 10 to operate in fan mode. Air purifying device 10 could continue operating in fan mode until sensor 30 senses a level of contamination that is above a predetermined level, and then proceed to send a signal to close louvers 11, forcing air to flow through filter 14 again.
  • a level of sufficient purification e.g., the contaminants sensed in the air have dropped below a predetermined level.
  • Sensor(s) 30 could also sense things such as when filter 14 is overly contaminated, and needs to be changed, signalling device 10 to shut down or only operate in fan mode until such a change has occurred.
  • a sensor 30 may simply indicate that a switch is needed between modes of operation, for example, with a sound or light, and that switch between modes can be performed manually by a user. Sensor could also be used to control the fan speed in some embodiments.
  • air purifying device 10 is able to operate in an air purifying mode or in a fan mode. This allows for a compact and easy to use device 10 that is able to perform two different functions depending on current conditions.
  • past conventional fans were sometimes able to work as air purifying devices by connecting a filter in the air flowpath. While this provided a way to purify air with a conventional fan, the flow through the filter greatly slowed down the airflow, causing the device to not be usable as a conventional fan without removing the filter or having a large motor (to compensate for the drag through the filter) that would cause a great deal of noise.
  • sensor(s) 30 may automatically send signals for the change.
  • sensor(s) 30 may indicate when a change is needed so a user may be assured the air purifying device 10 is in the desired mode no matter the current conditions, length of usage, etc.
  • Figs. 2a-2b include air purifying device 40 with louver 11, fan 12, filters 14, housing 16 (with top 24 and base 26), first inlets 35, second inlet 28, sensor 30, control buttons 32, airflow arrows 34 and outlet 37.
  • Filters 14 sit at or near first inlets 35, and fan 12 sits within housing 16 pulling air into air purifying device 40 and directing it toward and through outlet 37.
  • second inlet 28 is located on the same side of housing 16 as first inlets 35. Louver 24 opens to allow air in through second inlet 28.
  • Air purifying device 40 operates in the same manner as air purifying device 10, being able to operate as an air purifier when louver 24 is closed, and as a conventional fan when louver 24 is opened.
  • each of first inlets 35 and second inlet 28 are located on the same side of housing 16.
  • the flow path into housing 16 remains similar no matter the operational mode.
  • the change in operational mode may be automatic or manual, and may be based on feedback from sensor 30, which may include current air quality readings.
  • Air purifying devices 10,40 act as a simple, easy to use and efficient device which may operate to purify air or operate as a conventional fan. This eliminates the need to have two separate devices for the purifying and regular air circulation, or a higher power setting on the fan motor to pull sufficient airflow through the filter to operate as a conventional fan. This may be especially useful in home or smaller room environments where space is a premium.
  • the ability to open second inlet(s) 28 to allow air to bypass filter when entering device 10, 40 allows for use of a standard fan and motor while providing sufficient airflow through the outlet. Including one or more sensors allows for better control of the system, either automatically or by providing a cue so that a user may easily ascertain when a certain desired setting is reached and the mode of operation should be changed. Additionally, by being able to run air purifying device 10, 40 either in the air purifier mode or fan mode based on the air quality, a user saves energy as compared to running it continuously in an air purifier mode
  • louvers While one or more louvers are shown which allows for selectively opening or closing second inlet(s) 28, other means could be used. For example, a sliding cover, another type of cover or switch, a plurality of louvers or covers, and other such means which could allow for air into second inlet(s) or make second inlet(s) such that little to no air is able to flow in. Additionally, more or fewer louvers could be used to cover more or fewer inlets.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP16192549.0A 2016-10-06 2016-10-06 Luftreiniger Withdrawn EP3306218A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16192549.0A EP3306218A1 (de) 2016-10-06 2016-10-06 Luftreiniger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16192549.0A EP3306218A1 (de) 2016-10-06 2016-10-06 Luftreiniger

Publications (1)

Publication Number Publication Date
EP3306218A1 true EP3306218A1 (de) 2018-04-11

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EP16192549.0A Withdrawn EP3306218A1 (de) 2016-10-06 2016-10-06 Luftreiniger

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EP (1) EP3306218A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109764461A (zh) * 2019-01-18 2019-05-17 衡阳师范学院 独立式空气质量检测改善设备的构造
CN114110752A (zh) * 2020-09-01 2022-03-01 广州联动万物科技有限公司 双进风空调的控制方法、装置、双进风空调及存储介质
WO2022064514A1 (en) * 2020-09-22 2022-03-31 Umeandus Technologies India Private Limited Passive ambient air filtration device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2135740Y (zh) 1992-02-14 1993-06-09 杨润宝 室内空气净化扇
EP1434012A2 (de) 2002-12-23 2004-06-30 Samsung Electronics Co., Ltd. Luftreiniger
CN1721046A (zh) 2004-07-15 2006-01-18 北京航空航天大学 光触媒多功能空气净化扇
JP2006271614A (ja) * 2005-03-29 2006-10-12 Sharp Corp 空気清浄機
WO2009010528A1 (en) 2007-07-16 2009-01-22 Basic Holdings A fan assisted applicance comprising a biocidal filter
WO2010033423A1 (en) * 2008-09-19 2010-03-25 Martin Mittelmark Micro-irrigation device, system, and method for plant-based cleaning of indoor air and filter bed bioregeneration
KR20120041315A (ko) 2010-10-21 2012-05-02 홍은수 산소정화 선풍기
EP2837897A1 (de) * 2012-04-09 2015-02-18 Balmuda Inc. Luftreinigungsvorrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2135740Y (zh) 1992-02-14 1993-06-09 杨润宝 室内空气净化扇
EP1434012A2 (de) 2002-12-23 2004-06-30 Samsung Electronics Co., Ltd. Luftreiniger
CN1721046A (zh) 2004-07-15 2006-01-18 北京航空航天大学 光触媒多功能空气净化扇
JP2006271614A (ja) * 2005-03-29 2006-10-12 Sharp Corp 空気清浄機
WO2009010528A1 (en) 2007-07-16 2009-01-22 Basic Holdings A fan assisted applicance comprising a biocidal filter
WO2010033423A1 (en) * 2008-09-19 2010-03-25 Martin Mittelmark Micro-irrigation device, system, and method for plant-based cleaning of indoor air and filter bed bioregeneration
KR20120041315A (ko) 2010-10-21 2012-05-02 홍은수 산소정화 선풍기
EP2837897A1 (de) * 2012-04-09 2015-02-18 Balmuda Inc. Luftreinigungsvorrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109764461A (zh) * 2019-01-18 2019-05-17 衡阳师范学院 独立式空气质量检测改善设备的构造
CN109764461B (zh) * 2019-01-18 2021-04-06 衡阳师范学院 独立式空气质量检测改善设备的构造
CN114110752A (zh) * 2020-09-01 2022-03-01 广州联动万物科技有限公司 双进风空调的控制方法、装置、双进风空调及存储介质
WO2022064514A1 (en) * 2020-09-22 2022-03-31 Umeandus Technologies India Private Limited Passive ambient air filtration device

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