GB2428469A - Air purifier with cooling or heating the air - Google Patents

Air purifier with cooling or heating the air Download PDF

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Publication number
GB2428469A
GB2428469A GB0509594A GB0509594A GB2428469A GB 2428469 A GB2428469 A GB 2428469A GB 0509594 A GB0509594 A GB 0509594A GB 0509594 A GB0509594 A GB 0509594A GB 2428469 A GB2428469 A GB 2428469A
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GB
United Kingdom
Prior art keywords
air
air purifier
water
ventilator
subsystem
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.)
Granted
Application number
GB0509594A
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GB2428469B (en
GB0509594D0 (en
Inventor
Muhammad Abdulrahman Mushref
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Individual
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Individual
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Filing date
Publication date
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Priority to GB0509594A priority Critical patent/GB2428469B/en
Publication of GB0509594D0 publication Critical patent/GB0509594D0/en
Publication of GB2428469A publication Critical patent/GB2428469A/en
Application granted granted Critical
Publication of GB2428469B publication Critical patent/GB2428469B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0042—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater characterised by the application of thermo-electric units or the Peltier effect
    • 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
    • F24F8/117—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 wet 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
    • F24F8/117—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 wet filtering
    • F24F8/133—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 wet filtering by direct contact with liquid, e.g. with sprayed liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/40—Porous blocks
    • B01D2275/403—Flexible blocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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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)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Sustainable Development (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

An air purifier comprises a filtering subsystem having a filter 17 to remove large particles from air that is drawn in by a fan 2, passing the filtered air through a bent tube 8 having a plurality of holes and is submersed in water 7 in a container 15 to produce bubbles 6 and to remove fine particles in the air, and then drawing the air removed of large and fine particles through ventilator subsystem comprising a cooler or heater 3, 14 to control the humidity and temperature of the air. Filter 17 may be a sponge cloth, cooler or heater 3, 14 may comprise of a thermoelectric unit 14 utilising the Peltier effect and a stainless steel spiral tube 3 that is heated or cooled by the thermoelectric unit 14. A temperature sensor 19 and control panel 5 automatically control the air purifier. The water 7 may contain chemicals to remove toxic gases that have be drawn in and the level of water 7 in container 15 may be viewed by a water level meter 11. The water level may be adjusted by admitting and removing water 7 via respective upper 12 and lower valves 10.

Description

-1- 2428469
AIR PURIFIER WITH A COOLING AND HEATING UNIT
This invention relates to an air purifier with a cooling and heating unit Air filters are very well known devices which comprise a filtering element and an appropriate ventilator. The filtering element of the device is commonly made of sponge or other comparable material. It is the component which is responsible for removing dusts or undesired fine particles from the air. The ventilator usually contains a fan piece which blows air through the filtering element. All unwanted particles stick on the sponge material as long as air is in circulation. The entire system has to be cleaned from time to time in order to keep working efficiently.
Air filters are, however, relatively difficult to be cleaned as fine particles from the air are firmly attached in contact with the filtering element. Moreover, the ventilator produces dry air due to a comprehensive dependence of the system on the original humidity of the air.
According to the present invention there is provided an air purifier comprising a filtering element with a water container and a ventilator component with cooling features. The filtering subsystem is adapted to overcome the difficulties of prior filters. It contains a sponge cloth to remove large particles and a bent tube with holes in a water box where air bubbles are formed for a better extraction of powdery or fine unwanted dust. The ventilator subsystem consists of a spiral inner tube occupied with small sheets of stainless steel to reduce water vapor and a cooler or heater unit for refreshing the air and for humidity control.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows the complete intended air purifier system with various details; Figure 2 illustrates the ventilator subsystem with distinct parts; and Figure 3 displays the electronic circuit diagram.
Referring to the drawing presented in Figure 1 the air purifier system comprises a case 13, air inlet 18 and air outlet 1, a water level meter 11 in order to give an indication of the amount of water inside the water container 5, an upper valve 12 for adding water and a lower valve 10 for removing water. The sponge cloth 17 will stop large particles from going through the tube 16. Then, the nearly clean air will pass the rubber piece 9 and travel to the bent inner tube 8 within the water container 15. As illustrated, the bent inner tube 8 is designed to have several small holes under the water surface 7. Here, the air will begin to leave the holes forming small air bubbles 6. All powdery dust and fine particles will be attached to the water resulting in a purified air. Holes should be small enough in order to generate very small air bubbles. Many chemical materials could be added to the water for more purification or refreshment. Moreover, filtering can be accomplished for toxic gases provided some determined chemicals are added to the water. Ventilation process starts when both the air and water vapor travels through the rubber piece 4 to the spiral tube 3 which is cooled or heated by the subsystem 14. The temperature sensor 19 can detect the desired degree and make automatic operation of the complete system through the control panel 5. The clean air is then moved to the air chamber 22 by the fan 2, shall 21 and motor 20 to the outlet 1.
In Figure 2, the spiral tube is occupied by a stainless steal leaf to intensify the vapor to water drops.
The motor 20 is electrically connected by wires 31 and 32. The sensor probe 19 is also connected by wires 23 and 24. In Fig 2 the cooler subsystem utilizes the Peltier effect. When a DC current goes through the wires 24 connected to two junctions 23 and 25, junction 23 is cooled and junction is warmed. Note that both junctions are connected to a p - leg 22 and an n - leg 21. The cool junction is attached to the spiral tube in order to cool the air for refreshment and to reduce water vapor. The cooling or heating unit is made of PN junctions or two different metals 27 and 28. It is based on the thermoelectric conversion or Peltier effect. The junctions 25 and 26 are heated or cooled according to the direct current (DC) connected to the wires 29 and 30. If cooling is intended then junction 25 should cooled by connecting the wire 29 to the negative DC current. Otherwise, junction 25 can be heated by connecting the wire 29 to the positive DC current.
The circuit diagram for the panel controller 5 is shown in Figure 3. A dual polarity switch 35 is connected to the wires 33 and 34 and as shown it can alter the electrical polarity connected by wires 29 and 30 for cooling or heating. The temperature sensor 19 is enabled by a conditioning circuit 38 for proper operation to wires 23 and 24. The dual polarity switch 35 is also connected to a diode bridge 36 which can keep the electrical polarity for the light emitting diode (LED) 37. The change in polarity is indicated by the LEDs 38 and 39 for cooling or heating. The variable resistor 40 is to control the current intensity going to the junctions 25 and 26 by wires 29 and 30 to vary the degree of cooling or heating. Similarly, the variable resistor 41 is to control the current intensity going to the fan motor 20 by wires 31 and 32 to adjust the fan speed.

Claims (6)

1. An air purifier comprising a filtering element with a water container and a ventilator component with cooling or heating features. The filtering subsystem is adapted to overcome the difficulties of prior filters. It contains a sponge cloth to remove large particles and a bent tube with holes in a water container where air bubbles are formed for a better extraction of powdery or fine unwanted dust. The ventilator subsystem consists of a spiral inner tube occupied with a stainless steal leaf to reduce water vapor, a cooler or heater for refreshing the air and for humidity control, a temperature sensor and a fan.
2. An air purifier as claimed in claim 1 wherein the filtering element is designed with a bent inner tube with several small holes placed inside a water container.
3. An air purifier as claimed in claim 1 wherein toxic gases can be filtered from the air : * provided determined chemicals are added to the water in order to eliminate harmful effects. *.s.
* ..,
4. An air purifier as claimed in claim 1 wherein the spiral tube of the ventilator is cooled or **** heated by a PN thermoelectric or two different metals junctions employing the Peltier effect.
* *:
5. An air purifier as claimed in claim 1 wherein the ventilator subsystem is connected to a temperature sensor for automatic operation of the complete system.
* . *
6. An air purifier as claimed in claim 1 wherein the system is controlled by an electronic circuit *: : ::* consisting of a dual switch to select cooling or heating, a diode bridge to arrange the electric current, two variable resistors to control the degree of cooling or heating and the fan speed, a conditioning circuit to be interfaced with the sensor and three LEDs to indicate operation.
3. An air purifier as claimed in claim 2 wherein a lot of air bubbles are formed beneath the water surface where all powdery dust will be attached by the water.
4. An air purifier as claimed in claim 3 wherein toxic gases can be filtered from the air provided determined chemicals are added to the water in order to eliminate its harmful effects.
5. An air purifier as claimed in claim 1 wherein the ventilator subsystem is mainly equipped with a spiral tube occupied with a stainless steal leaf to concentrate the water vapor.
6. An air purifier as claimed in claim 4 wherein the spiral tube of the ventilator is cooled or heated by a PN thermoelectric or two different metals junctions employing the Peltier effect.
7. An air purifier as claimed in claim 1 wherein the ventilator subsystem is connected to a temperature sensor for automatic operation of the complete system.
8. An air purifier as claimed in claim 1 wherein the system is controlled by an electronic circuit consisting of a dual switch, a diode bridge, two variable resistors, a conditioning circuit and three LEDs.
Amendments to the claims have been filed as follows
1. A portable air purifier comprising a filtering subsystem with a water container and a ventilator subsystem with a cooling or heating unit wherein the filtering subsystem contains a sponge cloth to remove large particles and a bent tube with holes in a water container where air bubbles are formed for extraction of powdery or fine dust and the ventilator subsystem consists of a spiral inner tube occupied with a stainless steel threads in fiber form to condense water vapor and hence decrease humidity, a cooler or heater for temperature and humidity control, a sensor to measure temperature and humidity and a fan to circulate the air.
2. An air purifier as claimed in claim 1 wherein air bubbles are formed beneath the water surface where all powdery dust will be filtered by the water.
GB0509594A 2005-05-11 2005-05-11 Air purifier with a cooling and heating unit Expired - Fee Related GB2428469B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0509594A GB2428469B (en) 2005-05-11 2005-05-11 Air purifier with a cooling and heating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0509594A GB2428469B (en) 2005-05-11 2005-05-11 Air purifier with a cooling and heating unit

Publications (3)

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GB0509594D0 GB0509594D0 (en) 2005-06-15
GB2428469A true GB2428469A (en) 2007-01-31
GB2428469B GB2428469B (en) 2007-09-12

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102476004A (en) * 2010-11-23 2012-05-30 陈刚 Flue gas treatment system and process
CN103785251A (en) * 2013-04-09 2014-05-14 张峰 Method for removing PM10 and PM2.5 from air through hot water
CN103990339A (en) * 2014-04-30 2014-08-20 吴佳明 Modularization purifier and purifying method thereof
WO2016101850A1 (en) * 2014-12-22 2016-06-30 深圳市艾迪健康发展有限公司 Health instrument
CN107158860A (en) * 2017-05-08 2017-09-15 陈麒如 Remove haze device and its manufacture method in the special-shaped air channel of Vehicular air quality monitoring circulation field
EP3401021A1 (en) * 2017-05-09 2018-11-14 Herbert Hauptkorn Device for air processing
CN110500652A (en) * 2019-08-23 2019-11-26 石狮市赫角网络科技有限公司 A kind of cabinet type air conditioner indoor set
CN110833761A (en) * 2019-12-05 2020-02-25 安徽顺达环保科技股份有限公司 Leading SCR denitrification facility of industrial kiln flue gas
CN112089882A (en) * 2020-09-27 2020-12-18 华中科技大学 Method and system for sterilizing and purifying air by semiconductor thermoelectric sheet
CN112169567A (en) * 2020-09-23 2021-01-05 四川大学 Humidity-controllable CO gas absorption system
US20220196261A1 (en) * 2020-12-18 2022-06-23 Brandon Zhang Air filter apparatus

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103776121B (en) * 2014-02-28 2016-11-02 常州大学 A kind of damping device with pressure for laboratory tubing
CN104296291A (en) * 2014-10-17 2015-01-21 中山市蓝水能源科技发展有限公司 Water distribution device in temperature stratification type chilled water storage system
CN105674459A (en) * 2016-01-26 2016-06-15 芜湖美智空调设备有限公司 Humidification device, humidification control method, humidification control device and air-conditioner
CN106996607A (en) * 2017-05-11 2017-08-01 孙祥章 A kind of novel air filtration
CN110368804A (en) * 2019-07-24 2019-10-25 中科元生生物技术(天津)有限公司 A kind of microbial deodorizing device for livestock farm
CN110420531B (en) * 2019-09-03 2021-07-30 广东省安全生产技术中心有限公司 Ventilation and dust removal equipment for preventing dust explosion in workshop
CN111001254B (en) * 2019-12-31 2022-03-08 浙江欧巨纺织有限公司 Dust collector is used in weaving workshop
CN112473552B (en) * 2020-11-17 2022-10-14 青岛伊莱新材料有限公司 Dust separation and collection system of prilling tower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116312A (en) * 1982-02-09 1983-09-21 Mamoaca Srl Air conditioning apparatus
JPH03225130A (en) * 1990-01-31 1991-10-04 Toyoda Gosei Co Ltd Air conditioning device
JPH04194527A (en) * 1990-11-28 1992-07-14 Techno Ryowa:Kk Air ionization system
JPH0970516A (en) * 1995-09-05 1997-03-18 Omron Corp Air cleaner
WO2003041553A1 (en) * 2001-11-17 2003-05-22 Wirth, Gabriele Purification unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116312A (en) * 1982-02-09 1983-09-21 Mamoaca Srl Air conditioning apparatus
JPH03225130A (en) * 1990-01-31 1991-10-04 Toyoda Gosei Co Ltd Air conditioning device
JPH04194527A (en) * 1990-11-28 1992-07-14 Techno Ryowa:Kk Air ionization system
JPH0970516A (en) * 1995-09-05 1997-03-18 Omron Corp Air cleaner
WO2003041553A1 (en) * 2001-11-17 2003-05-22 Wirth, Gabriele Purification unit

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102476004A (en) * 2010-11-23 2012-05-30 陈刚 Flue gas treatment system and process
CN102476004B (en) * 2010-11-23 2015-03-04 陈刚 Flue gas treatment system and process
CN103785251A (en) * 2013-04-09 2014-05-14 张峰 Method for removing PM10 and PM2.5 from air through hot water
CN103990339A (en) * 2014-04-30 2014-08-20 吴佳明 Modularization purifier and purifying method thereof
WO2016101850A1 (en) * 2014-12-22 2016-06-30 深圳市艾迪健康发展有限公司 Health instrument
CN107158860B (en) * 2017-05-08 2018-03-06 陈麒如 Remove haze device and its manufacture method in Vehicular air quality monitoring circulation field abnormal shape air channel
CN107158860A (en) * 2017-05-08 2017-09-15 陈麒如 Remove haze device and its manufacture method in the special-shaped air channel of Vehicular air quality monitoring circulation field
EP3401021A1 (en) * 2017-05-09 2018-11-14 Herbert Hauptkorn Device for air processing
CN110500652A (en) * 2019-08-23 2019-11-26 石狮市赫角网络科技有限公司 A kind of cabinet type air conditioner indoor set
CN110500652B (en) * 2019-08-23 2021-07-27 义乌市嘉诗电子科技有限公司 Cabinet type air conditioner indoor unit
CN110833761A (en) * 2019-12-05 2020-02-25 安徽顺达环保科技股份有限公司 Leading SCR denitrification facility of industrial kiln flue gas
CN110833761B (en) * 2019-12-05 2021-09-03 安徽顺达环保科技股份有限公司 Leading SCR denitrification facility of industrial kiln flue gas
CN112169567A (en) * 2020-09-23 2021-01-05 四川大学 Humidity-controllable CO gas absorption system
CN112089882A (en) * 2020-09-27 2020-12-18 华中科技大学 Method and system for sterilizing and purifying air by semiconductor thermoelectric sheet
US20220196261A1 (en) * 2020-12-18 2022-06-23 Brandon Zhang Air filter apparatus

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Publication number Publication date
GB2428469B (en) 2007-09-12
GB0509594D0 (en) 2005-06-15

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130511