CN110857799A - Split type adjustable multifunctional air purifier - Google Patents

Split type adjustable multifunctional air purifier Download PDF

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Publication number
CN110857799A
CN110857799A CN201810963266.4A CN201810963266A CN110857799A CN 110857799 A CN110857799 A CN 110857799A CN 201810963266 A CN201810963266 A CN 201810963266A CN 110857799 A CN110857799 A CN 110857799A
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CN
China
Prior art keywords
air
indoor
outdoor
detector
air purifier
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Pending
Application number
CN201810963266.4A
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Chinese (zh)
Inventor
王芳
程权
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Priority to CN201810963266.4A priority Critical patent/CN110857799A/en
Publication of CN110857799A publication Critical patent/CN110857799A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, 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
    • F24F8/192Treatment, 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 electrical means, e.g. by applying electrostatic fields or high voltages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22Treatment, 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/50Air quality properties
    • F24F2110/64Airborne particle content
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/50Air quality properties
    • F24F2110/65Concentration of specific substances or contaminants
    • F24F2110/70Carbon dioxide

Abstract

The invention discloses a split type adjustable multifunctional air purifier, which comprises an outdoor unit and an indoor unit, wherein the outdoor unit comprises a first air inlet and a second air inlet; PM arranged on outdoor unit2.5Detector and PM arranged on indoor unit2.5Detector and CO2A detector for detecting indoor and outdoor PM2.5Concentration and indoor CO2Whether concentration reaches standard to adjust this adjustable air purifier's operation through control circuit control. When the outdoor air enters the outdoor unit through the air inlet fan, the outdoor air is pretreated through the primary filter screen and then purified through the micro-static fresh airThe device, little static new trend purifier can realize extremely low windage down to PM2.5High-efficiency adsorption. In the indoor unit, air can pass through the HEPA high-efficiency filter layer and can effectively filter bacteria and allergens. Compared with the traditional air purifier, the air purifier has more efficient purification effect and sterilization capability, and can also be used for purifying indoor CO2Concentration and indoor and outdoor PM2.5The concentration automatically adjusts the operation mode.

Description

Split type adjustable multifunctional air purifier
Technical Field
The invention relates to an air purifier, in particular to a split type adjustable multifunctional air purifier.
Background
Due to the wide range of haze weather in China for a long time and the establishment and use of a large number of waste incineration power plants in recent years, a large amount of harmful gas is continuously generated, and the environment pollution of places such as indoor places, outdoor places, in-vehicle places and the like causes people to have to face a severe air quality problem. This has a serious influence on the health of life, and it is expected that the air environment of nature will be hardly improved for a long time. In the air, it is known that four or more types of harmful microorganisms must be purified and eliminated. First, various solid suspensions, particulate fines; the second category is various bacteria, microorganisms, viruses; the third type is volatile gas; the fourth type is the smoke class. The elimination of these four types of substances is crucial in terms of air purification treatment. An air purifier is understood as a device that sucks in polluted air for purification and then discharges the purified air. An air cleaner generally includes an air blowing device for flowing outside air into an interior of the air cleaner; and a filter capable of filtering out dust or bacteria, etc. in the air. In addition, bacteria and viruses are adsorbed on these fine particles. At present, larger-diameter particles such as dust, falling ash and the like are easy to intercept, and only a simple common filter screen is needed. The traditional air processor generally adopts a plurality of filter layers for interception so as to achieve the purposes of disinfection and peculiar smell elimination, but cannot completely eliminate harmful substances, and even can generate secondary and tertiary repetitive pollution.
Disclosure of Invention
In order to solve the problems, the invention provides a split type adjustable multifunctional air purifier which continuously aims at improving sterilization equipment and noise reduction conditions in the air purifier.
In order to achieve the purpose, the invention provides the following technical scheme:
a split type adjustable multifunctional air purifier comprises an outdoor unit shell, wherein an air inlet is formed in the outermost side of the outdoor unit shell, a primary filter screen is arranged on the inner side of the air inlet, an air inlet fan is arranged on the inner side of the primary filter screen, a micro-static fresh air purifying device is arranged on the inner side of the air inlet fan, and the outer side of the air inlet fan is provided with an outer shellThe casing is linked together through blast pipe and indoor set casing, be equipped with the air supply valve on the blast pipe, the one end of indoor set casing is equipped with the return air inlet, return air inlet department is equipped with just imitates the filter screen, the return air inlet inboard is equipped with the return air fan, the inboard of return air fan is equipped with the sunshade, the centre of sunshade is equipped with the return air valve, the sunshade opposite side is equipped with UV-C bactericidal lamp, the outside of UV-C bactericidal lamp is equipped with HEPA high efficiency filter screen, the outside of HEPA high efficiency filter screen is equipped with anion generator, anion generator's foreign side is equipped with the air outlet, the2.5The detector and the indoor unit are also provided with CO2Detector and PM2.5And (7) detecting the instrument.
Furthermore, the micro-static fresh air purification device adopts a strong electric field medium IFD device.
Furthermore, the purification grade of the HEPA high-efficiency filter layer is H13-H14.
Furthermore, the UV-C germicidal lamp generates ultraviolet radiation with the wavelength of 200-280 nm.
Further, the number of the negative ion generators is at least 2, and the concentration of the negative ions is at least 10 x 106pcs/cm3
Further, outdoor PM2.5Detector and indoor PM2.5The detection range of the detector is at least 0-999 mu g/m3The detection precision is at least +/-15 mu g/m3Indoor CO2The detection range of the detector is at least 0-5000 ppm, and the detection precision is at least +/-75 ppm.
Furthermore, the air inlet is provided with a primary filter screen with the purification grade of at least G3.
Furthermore, a primary filter screen with the purification grade of at least G3 is arranged at the air return inlet.
Compared with the prior art, the invention has the following remarkable advantages:
1. the invention provides an air purifier with fine particle filtering and microorganism filtering, which is provided with a micro-static fresh air purifying device, wherein the micro-static fresh air purifying device is used for efficiently adsorbing and filtering the entering air, and most of bacteria and viruses adsorbed on the fine particles are also adsorbed and filtered.
2. When the indoor unit of the device works partially, air passes through the UV-C germicidal lamp, short-wave sterilizing ultraviolet rays generated by the UV-C germicidal lamp can penetrate through cell membranes and cell nuclei of organisms to destroy molecular bonds, so that the generation and preparation of the dimers in the molecules cause mutation, the activity of cytogenetic materials is lost, the microorganisms die soon, and the germicidal lamp has the advantages of small volume, long service life, energy conservation, environmental protection, sterilization, no mercury and the like.
3. The device of the invention is provided with the HEPA high-efficiency filter layer, and can be used for filtering organisms such as bacteria, viruses and the like in the air, thereby preventing and controlling the organisms such as the bacteria, the viruses and the like and causing the infection and the transmission of related diseases.
4. The air purifier with fine particle filtering and microorganism filtering functions is also provided with the negative ion generator for carrying out last sterilization and enabling air after the last sterilization to carry a trace amount of negative ions, so that the air finally exhausted from the air outlet to the outside is clean and has negative ions beneficial to a human body, and the using effect of the air purifier is greatly improved.
Drawings
Fig. 1 is a schematic structural view of an air purifier according to the present invention.
Fig. 2 is a top plan view of the air cleaner of the present invention taken in the middle section thereof.
Fig. 3 is a front view of the air cleaner of the present invention in mid-section.
FIG. 4 is a circuit diagram of the auto-tuning section of the present invention.
1, an outdoor unit; 2, air pipe; 3, an indoor unit; 4-indoor space; 5, primary filter screen I; 6, an outdoor unit shell; 7-micro-static fresh air purification system; 8, an air inlet; 9-air supply fan; 10-air supply duct; 11-air supply air valve; 12-primary filter screen two; 13-a shutter; 14-UV-C germicidal lamp; 15-air supply outlet; 16-return air valve; 17-air return air inlet; 18-return air fan; 19-indoor CO2 detector; 20-indoor PM2.5 detector; 21-HEPA high efficiency filter screen; 22-indoor unit shell; 23-negative ion generator; 24-outdoor PM2.5 detector; 25-a single chip microcomputer; 26-220V alternating current; 27-J1 switch; 28-relay 1; 29-J2 switch; 30-relay 2; 31-J3 switch; 32-relay 3; 33-J4 switch; 34-relay 4; 35-air quality sensor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
Referring to fig. 2 and fig. 3, the present invention provides a technical solution: an adjustable multifunctional air purifier with fine particle filtering and microorganism filtering comprises an outdoor unit shell 6, an air inlet 8 is arranged on the outermost side of the shell 6, a primary filter screen 5 is arranged on the inner side of the air inlet 8, an air inlet fan 9 is arranged on the inner side of the primary filter screen 5, outdoor fresh air enters the outdoor unit of the air purifier through the air inlet fan 9, a micro-static fresh air purifying device 7 is arranged on the inner side of the air inlet fan 9, the micro-static fresh air purifying device 7 has a good filtering effect on fine particles and has the advantages of small air resistance, low energy consumption and easiness in cleaning, outdoor air filtered by the outdoor unit is sent into an indoor unit air return cavity through an air supply pipe 9, a return air fan 18 is arranged at one end of the indoor unit air return cavity, a return air port 17 is arranged on the outer side of the return air fan 18, the return air fan 18 can circulate and purify indoor air through the return air port 17, and, when the air in the microorganism content is more or prevent secondary pollution, can carry out the degerming through the short wave sterilization ultraviolet that UV-C bactericidal lamp 14 produced, the outside of UV-C bactericidal lamp 14 is equipped with HEPA high efficiency filter layer 21, HEPA high efficiency filter layer 21 can effectively filter most fine particulate matter, the outside of HEPA high efficiency filter layer 21 is equipped with anion generator 23, anion that anion generator 23 produced not only can adsorption filtration, can also be sent into indoor along with the new trend together, it is beneficial to the human body, anion generator 23's the outside is equipped with air outlet 15, the new trend through purifying passes through air outlet 15 and sends into indoor.
By indoor CO2Detector 19 and indoor PM2.5Detector 20 and outdoor PM2.5Detector 24 detects indoor CO2Outdoor PM2.5And outdoor PM2.5Whether the standard is reached or not is judged to control the operation of the outdoor air supply fan 6, the indoor return air fan 13, the UV-C germicidal lamp 16, the negative ion generator 17 and the micro-static fresh air purifying device 7.
When in use: air flow rate is accelerated in the rotation of air supply fan 9, provide the wind pressure, make passing through of air ability faster just imitate filter screen 5, provide air purification efficiency, just imitate filter screen 5 and be used for carrying out first step processing to the air, filter the great particle of particle diameter in the air, little static new trend purifier 7 carries out further high-efficient adsorption filtration to the new trend to make most adsorb bacterium, the virus on these fine particles all by adsorption filtration. In the indoor unit part, air passes through the UV-C germicidal lamp 14, short-wave sterilizing ultraviolet rays generated by the UV-C germicidal lamp 14 penetrate through cell membranes and cell nuclei of organisms to break molecular bonds, so that the molecules are gradually changed into the solution dimers to cause mutation, the activity of cell genetic materials is lost, and the microorganisms die in the near future. Then passes through the HEPA high-efficiency filter layer 21, can be used for filtering organisms such as bacteria and viruses in the air, and can prevent and control the infection and the transmission of related diseases caused by the organisms such as the bacteria and the viruses. Finally, the air is sterilized for the last time through the negative ion generator 23, and the air after the last sterilization carries a trace amount of negative ions, so that the air finally discharged to the outside from the air outlet is clean and has negative ions beneficial to a human body, and the using effect of the air purifier is greatly improved.
In this embodiment, a primary filter screen 5 and a secondary primary filter screen 12 are respectively disposed at the air inlet 8 and the air return 17 for filtering large particles in outdoor and indoor air.
The following functions can be realized by combining the automatic regulation control circuit shown in the figure 4:
when indoor CO2When the concentration exceeds the standard (the concentration is more than 1000ppm), outdoor fresh air needs to be introduced to reduce indoor CO2The outdoor unit blower fan 9 starts to operate, and the blower valve 11 is opened.
When indoor CO2The concentration reaches the standard (the concentration is not more than1000ppm) and outdoor PM2.5The concentration exceeds the standard (the mass concentration is more than 75 mu g/m)3) When the outdoor unit is in use, only indoor air needs to be purified in a circulating mode, so that the operation of the outdoor unit air supply fan is stopped, and the air supply air valve 11 is closed; when indoor CO2Concentration up to standard (concentration is not more than 1000ppm) and outdoor PM2.5The concentration is not over standard (the mass concentration is not more than 75 mu g/m)3) During the time, only need with outdoor air supply fan operation and little static new trend purifier 7 need not move, air supply blast gate 11 is opened, send into the new trend can to can practice thrift air purifier energy consumption.
When PM in room2.5The concentration exceeds the standard (the mass concentration is more than 75 mu g/m)3) And outdoor PM2.5The concentration exceeds the standard (the mass concentration is more than 75 mu g/m)3) When the content of fine particles and microorganisms in indoor and outdoor air is too high, if the content of indoor CO is too high2The concentration reaches the standard (the concentration is not more than 1000ppm), only indoor circulating purification is needed, the outdoor air supply fan 9 does not need to operate, the air supply air valve 11 is closed, the return air fan 18, the UV-C germicidal lamp 14 and the negative ion generator 23 can operate, the return air valve 16 is opened, fine particles are further filtered and adsorbed, and the disinfection and sterilization are carried out; if indoor CO2If the concentration does not reach the standard (the concentration is more than 1000ppm), the outdoor air supply fan 9 and the micro-static fresh air purification device 7 are required to operate, the air supply air valve 11 is opened, and fresh air is introduced to reduce indoor CO2And (4) concentration.
When PM in room2.5The concentration exceeds the standard (the mass concentration is more than 75 mu g/m)3) And outdoor PM2.5The concentration is not over standard (the mass concentration is not more than 75 mu g/m)3) At the moment, the indoor unit does not need to operate, the return air valve 16 is closed, and only the supply air valve 11 is opened to introduce fresh air through the operation of the outdoor supply fan 9.
When PM in room2.5The concentration reaches the standard (the mass concentration is not more than 75 mu g/m)3) During operation, the content of fine particles and microorganisms in indoor air is normal, an indoor unit is not needed to operate to purify air, the return air fan 18, the UV-C sterilizing lamp 14 and the negative ion generator 23 stop operating, energy consumption does not need to be wasted any more when the quality of the air reaches the standard, and noise harm is reduced.
When PM is outdoors2.5The concentration reaches the standard (the mass concentration is not more than 75 mu g/m)3) In the process, the concentration of fine particles in the outdoor air is very low, and further filtration is not needed, so that the micro-static fresh air purification device 7 stops running.
When PM is outdoors2.5The concentration exceeds the standard (the mass concentration is more than 75 mu g/m)3) In time, it is shown that the concentration of fine particles in the outdoor air is high, and further filtering is needed, so the micro-static fresh air purification device 7 will start to operate, and the UV-C germicidal lamp 14 and the anion generator 23 will also start to operate, so as to provide higher quality air purification effect.
Specific operating modes can be found in table 1:
Figure BDA0001774328270000051
the foregoing is illustrative of the principles and operation of all processes of the present invention, and any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides a split type adjustable multi-functional air purifier, includes off-premises station casing (6), its characterized in that: the outside of outer casing (6) be equipped with air intake (8), the inboard of air intake (8) is equipped with just imitating filter screen (5), the inboard of just imitating filter screen (5) is equipped with air intake fan (9), the inboard of air intake fan (9) is equipped with little static new trend purifier (7), outer casing (6) are linked together through blast pipe (10) and indoor set casing (22), be equipped with air supply valve (11) on blast pipe (10), the one end of indoor set casing (22) is equipped with return air inlet (17), return air inlet (17) locate to be equipped with just imitating filter screen (12), return air inlet (17) inboard is equipped with return air fan (18), the inboard of return air fan (18) is equipped with sunshade (13), the centre of sunshade (13) is equipped with return air valve (16), instituteThe other side of the shielding plate (13) is provided with a UV-C bactericidal lamp (14), the outer side of the UV-C bactericidal lamp (14) is provided with an HEPA high-efficiency filter screen (21), the outer side of the HEPA high-efficiency filter screen (21) is provided with a negative ion generator (23), the outer side of the negative ion generator (23) is provided with an air outlet (15), and the outdoor unit is further provided with PM2.5A detector (24), and the indoor unit is also provided with CO2A detector (19) and PM2.5A detector (20).
2. The split adjustable multifunctional air purifier of claim 1, wherein: the micro-static fresh air purification device (7) adopts a strong electric field medium (IFD) device.
3. The split adjustable multifunctional air purifier of claim 1, wherein: the purification grade of the HEPA high-efficiency filter layer (21) is H13-H14.
4. The split adjustable multifunctional air purifier of claim 1, wherein: the UV-C germicidal lamp (14) generates ultraviolet radiation with the wavelength of 200-280 nm.
5. The split adjustable multifunctional air purifier of claim 1, wherein: the number of the negative ion generators (23) is at least 2, and the concentration of the negative ions is at least 10 x 106pcs/cm3
6. The split adjustable multifunctional air purifier of claim 1, wherein: the outdoor PM2.5Detector (24) and indoor PM2.5The detection range of the detector (20) is at least 0-999 mu g/m3The detection precision is at least +/-15 mu g/m3Indoor CO2The detection range of the detector (19) is at least 0-5000 ppm, and the detection precision is at least +/-75 ppm.
7. The split adjustable multifunctional air purifier of claim 1, wherein: the air inlet (8) is provided with a primary filter screen (5) with a purification grade of at least G3.
8. The split adjustable multifunctional air purifier of claim 1, wherein: and a primary filter screen (12) with the purification grade of at least G3 is arranged at the air return opening (17).
CN201810963266.4A 2018-08-22 2018-08-22 Split type adjustable multifunctional air purifier Pending CN110857799A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111426027A (en) * 2020-03-13 2020-07-17 青岛海尔空调电子有限公司 Control method of sterilizing air conditioner
CN113324306A (en) * 2021-06-04 2021-08-31 山东省节能技术研究院 Electrothermal film cleaning heating and micro-static air purification integrated method and system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206746A (en) * 2013-01-17 2013-07-17 刘华荣 Split type energy-saving air conditioner
CN103822306A (en) * 2014-03-03 2014-05-28 安阳振动器有限责任公司 Split type air-purifying fresh-air draught fan
CN204006322U (en) * 2014-06-30 2014-12-10 北京米微科技有限公司 A kind of new wind air purifier
CN106051967A (en) * 2016-07-07 2016-10-26 武汉飞环保科技有限责任公司 Fresh air cleaner with double turbofans and double filter nets in split manner
CN106678992A (en) * 2017-03-08 2017-05-17 孙金鹏 Intelligent fresh and return air volume adjusting type air purifier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206746A (en) * 2013-01-17 2013-07-17 刘华荣 Split type energy-saving air conditioner
CN103822306A (en) * 2014-03-03 2014-05-28 安阳振动器有限责任公司 Split type air-purifying fresh-air draught fan
CN204006322U (en) * 2014-06-30 2014-12-10 北京米微科技有限公司 A kind of new wind air purifier
CN106051967A (en) * 2016-07-07 2016-10-26 武汉飞环保科技有限责任公司 Fresh air cleaner with double turbofans and double filter nets in split manner
CN106678992A (en) * 2017-03-08 2017-05-17 孙金鹏 Intelligent fresh and return air volume adjusting type air purifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111426027A (en) * 2020-03-13 2020-07-17 青岛海尔空调电子有限公司 Control method of sterilizing air conditioner
CN113324306A (en) * 2021-06-04 2021-08-31 山东省节能技术研究院 Electrothermal film cleaning heating and micro-static air purification integrated method and system

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