CN111023343A - Air purifying device - Google Patents

Air purifying device Download PDF

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Publication number
CN111023343A
CN111023343A CN201911289860.0A CN201911289860A CN111023343A CN 111023343 A CN111023343 A CN 111023343A CN 201911289860 A CN201911289860 A CN 201911289860A CN 111023343 A CN111023343 A CN 111023343A
Authority
CN
China
Prior art keywords
air
cavity
ozone
purification
temperature
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Withdrawn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
CN201911289860.0A
Other languages
Chinese (zh)
Inventor
高攀峰
朱福苗
傅海燕
吴优
赵梦欣
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.)
Xiamen University of Technology
Original Assignee
Xiamen University of Technology
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 Xiamen University of Technology filed Critical Xiamen University of Technology
Priority to CN201911289860.0A priority Critical patent/CN111023343A/en
Publication of CN111023343A publication Critical patent/CN111023343A/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F24F8/15—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
    • 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
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • F24F8/26—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media using ozone

Abstract

The invention relates to an air purification device, which comprises a closed cavity, wherein the cavity is provided with an air inlet and an air outlet; a power source located outside the cavity; the air compressor, the ozone generator, the temperature and humidity controller and the ultraviolet generator are dispersedly arranged inside the cavity, wherein the air compressor is connected with the air inlet and introduces air to be purified into the cavity; the temperature and humidity controller is connected with the air outlet, and the purified air is guided out of the cavity from the air outlet after passing through the temperature and humidity controller. The device utilizes O3‑UV‑H2O synergistic effect, when the concentration of ozone is set to be 30ppm and the ultraviolet radiation is set to be 186 mu w/cm2The air humidity is 50 percent, and the retention time is 240s, under the condition, the removal rates of formaldehyde, benzene and m-xylene are 97.47 percent, 63.89 percent and 100 percent respectively.

Description

Air purifying device
Technical Field
The invention relates to an air treatment technology, in particular to an air purification device.
Background
At present, China has shifted from traditional soot-type pollution to fine particulate matter (PM2.5) and ozone (O)3) Is characterized by the compound pollution of the atmosphere. VOCs being formed as O3And PM2.5 contamination. The large production and emission of benzene and formaldehyde is responsible for Chinese O3The main cause of the rapid increase in concentration. With conventional SO2、NO2Different from smoke dust, the prevention and treatment work of benzene series and formaldehyde pollution in China starts late, and the emission source is very complex, so that a purification method, influence factors and a control scheme for indoor air pollution are urgently needed.
Air purification methods can be roughly classified into three categories: physical decontamination, chemical decontamination and biological decontamination. Among them, the physical adsorption technology has been widely used in the field of indoor air purification. The low-temperature plasma, ozone oxidation and photocatalytic oxidation technologies are mainly applied to the industrial field. Due to the more or less insufficient availability of a single purification technique, it is expected that a good purification efficiency can be achieved by combining two or more air purification methods. At present, the physical adsorption and photocatalytic oxidation combined purification technology and the physical adsorption and plasma combined purification technology are mainly adopted. Physical adsorbents generally have the problem of saturated adsorption, and if the physical adsorbents are not replaced in time, bacteria are easy to breed, so that secondary pollution is caused. To compensate for this deficiency, physical adsorption techniques are often used in conjunction with photocatalytic purification techniques to purify VOCs in the room.
However, in the prior art, the air circulation method is generally adopted to treat the organic gas, and the device adopting the air circulation method to treat the organic gas cannot make the gas stay in the device for a sufficient time, so that a good treatment effect cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an air purification device which can realize higher removal rate of formaldehyde, benzene and m-xylene in a closed space.
The action mechanism of the invention is as follows: the inventors believe that the process of oxidizing organic contaminants with ozone alone is less efficient and therefore combines ozone and ultraviolet light illumination. When light with energy larger than the width of the photocatalyst forbidden band (VB) irradiates the catalyst carrier, the light excited electrons are transited to the Conduction Band (CB) to form conduction band electrons e-, ozone absorbs light energy to generate oxygen free radicals (O), and moisture (H) in the air2O) and oxygen radicals(O. cndot.) combines to form 2 molecules of hydroxyl radicals (HO. cndot.). The hydroxyl radical (HO. cndot.) can indiscriminately oxidize common organic pollutants to mineralize the common organic pollutants, thereby achieving the purpose of degrading and converting the organic pollutants in the air. The process is as follows:
the reaction equation is as follows:
O3+uv→O2+O·
O·+H2O→2HO·
therefore, the air purification device is provided, indoor polluted gas is introduced into the purification device through the air compressor, can stay in the closed cavity and passes through the O3-UV-H2And (4) discharging after the O is oxidized under the synergistic action.
The specific scheme is as follows:
an air purification device comprises a closed cavity, wherein the cavity is provided with an air inlet and an air outlet, the air purification device also comprises a power supply, an air compressor, an ozone generator, a temperature and humidity controller and an ultraviolet generator, the power supply is positioned outside the cavity and is connected into the cavity through a lead to provide electric quantity for electric equipment; the air compressor, the ozone generator, the temperature and humidity controller and the ultraviolet generator are dispersedly arranged in the cavity, wherein the air compressor is connected with the air inlet and introduces air to be purified into the cavity; the temperature and humidity controller is connected with the air outlet, and the purified air is guided out of the cavity from the air outlet after passing through the temperature and humidity controller.
Further, the ultraviolet generator comprises a plurality of ultraviolet lamps, and the ultraviolet lamps are arranged on the side wall of the air purification device in parallel.
Furthermore, the ultraviolet generator is composed of 5 ultraviolet lamps with the specifications of 3 ultraviolet lamps 8W, 1 ultraviolet lamp 10W and 20 ultraviolet lamps, all the lamp tubes are arranged in the air purification device, and the switch is led out of the air purification device.
Further, the ultraviolet generator is positioned at the opposite side of the ozone generator.
Further, the temperature and humidity controller comprises an air duct and a stainless steel pipe, the air duct is positioned in the stainless steel pipe, an interlayer space formed by the air duct and the stainless steel pipe is filled with heat insulation materials, and electric heating wires are arranged in the heat insulation materials; the outer wall of the stainless steel pipe is provided with a temperature sensor, the temperature sensor is connected with a controller, the controller is connected to the electric heating wire in the interlayer space inside the stainless steel pipe, and the air temperature in the air guide pipe is controlled by controlling the electric heating wire; the controller is also connected with a humidity sensor, and a probe of the humidity sensor is positioned in the cavity.
Further, air purification device still includes the fan, the fan sets up on air purification device's inner wall for strengthen the interior air flow of device, increase purification efficiency.
Further, the air outlet is connected with an ozone decomposition device, and the ozone decomposition device is positioned outside the cavity and used for decomposing unreacted ozone.
Furthermore, the air outlet is connected with a heating device, and the heating device is positioned outside the cavity and used for heating the unreacted ozone to ensure that the unreacted ozone is attenuated to a safe concentration range and then is discharged.
Further, the air purification device further comprises a photocatalyst carrier, the photocatalyst carrier is connected with the air inlet, and the photocatalyst carrier contains a photocatalyst catalyst.
Has the advantages that:
the air purification device provided by the invention has a good purification effect, and utilizes O3-UV-H2O synergistic effect, when the concentration of ozone is set to be 30ppm and the ultraviolet radiation is set to be 186 mu w/cm2The air humidity is 50 percent, and the retention time is 240s, under the condition, the removal rates of formaldehyde, benzene and m-xylene are 97.47 percent, 63.89 percent and 100 percent respectively.
Drawings
In order to illustrate the technical solution of the present invention more clearly, the drawings will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present invention and are not intended to limit the present invention.
Fig. 1 is a schematic structural view of an air cleaning apparatus according to an embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a temperature and humidity controller provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of an air purification apparatus according to embodiment 2 of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available. In the following examples, "%" means weight percent, unless otherwise specified.
Example 1
Referring to fig. 1, the air purification device includes a power supply 0 and a closed cavity 1, the cavity 1 is provided with an air inlet 10 and an air outlet 11, the power supply 0 is located outside the cavity 1 and is connected to the cavity 1 through a wire to provide electric power for electric equipment. The air purification device also comprises an air compressor 2, an ultraviolet generator 3, an ozone generator 4, a temperature and humidity controller 5 and a fan 6, wherein the air compressor 2, the ultraviolet generator 3, the ozone generator 4, the temperature and humidity controller 5 and the fan 6 are dispersedly arranged inside the cavity 1, the air compressor 2 is connected with an air inlet 10, and air to be purified is introduced into the cavity 1; the temperature and humidity controller 5 is connected with the air outlet 11, and the purified air is guided out of the cavity 1 from the air outlet 11 after passing through the temperature and humidity controller 5. The fan 6 is arranged on the inner wall of the air purification device and positioned on one side of the air outlet 11, and is used for enhancing the air flow in the device and increasing the purification efficiency.
The ultraviolet generator 3 is composed of 5 ultraviolet lamps with the specifications of 3 ultraviolet lamps 8W, 1 ultraviolet lamp 10W and 20 ultraviolet lamps, all the lamp tubes are arranged in the air purification device, and the switch is led out of the air purification device.
Referring to fig. 2, the temperature and humidity controller 5 includes a stainless steel pipe 51 and an air duct 52, the air duct 52 is located inside the stainless steel pipe 51, an interlayer space formed by the stainless steel pipe and the air duct is filled with a heat insulating material 54, a heating wire 53 is arranged in the heat insulating material 54, and the heating wire is wound on the outer wall of the air duct 52; the outer wall of the stainless steel tube 51 is provided with a temperature sensor 55, the temperature sensor 55 is connected with a controller 56, in this embodiment, the controller 56 is located inside the cavity 1, and it can also be arranged outside the cavity 1, for example, on the outer wall of the whole set of devices. The controller 56 is connected to the heating wire 53 in the interlayer space inside the stainless steel pipe 51, and controls the temperature of air in the air guide duct 52 by controlling the heating wire 53; the controller 56 is also connected to a humidity sensor 57, and a probe of the humidity sensor 57 is located in the cavity 1 for detecting the humidity in the cavity 1.
The device utilizes O3-UV-H2O synergistic effect, when the concentration of ozone is set to be 30ppm and the ultraviolet radiation is set to be 186 mu w/cm2The air humidity is 50 percent, and the retention time is 240s, under the condition, the removal rates of formaldehyde, benzene and m-xylene are 97.47 percent, 63.89 percent and 100 percent respectively.
Example 2
Referring to fig. 3, in this embodiment, a photocatalyst carrier 7 is added on the basis of embodiment 1, the photocatalyst carrier 7 is connected to an air inlet 10, and air to be purified passes through the photocatalyst carrier 7 and then enters the cavity 1. TiO is filled in the photocatalyst carrier 72And ZnO, etc. combines three technologies of ultraviolet photolysis, ozone oxidation and photocatalyst catalysis, and can further improve the removal rate of the device on organic pollutants.
Example 3
In this embodiment, an ozone decomposition device 8 is added on the basis of embodiment 1, is located outside the cavity 1 of the air purification device, and is connected with the air outlet 11, and the ozone decomposition device 8 is used for decomposing unreacted ozone.
Because the optimal ozone concentration in the optimized conditions for degrading formaldehyde, benzene and m-xylene is 30ppm, the optimal ozone concentration is far beyond the allowable concentration value of 0.16mg/m in a working area specified by the national standard3I.e., 0.07ppm, is harmful to human health and is therefore compatible with O3-UV-H2Synergistic effect of OAnd decomposing the residual ozone for degrading formaldehyde, benzene and m-xylene. In the present embodiment, the ozone decomposing device 8 is used to decompose the residual ozone, and the purified air is discharged after the discharge requirement is met.
Example 4
In the embodiment, a heating device 9 is added on the basis of the embodiment 1, is positioned outside the cavity 1 of the air purification device and is connected with the air outlet 11, and the heating device 9 is used for heating the air which is purified, so that the attenuation of residual ozone is accelerated.
Because the optimal ozone concentration in the optimized conditions for degrading formaldehyde, benzene and m-xylene is 30ppm, the optimal ozone concentration is far beyond the allowable concentration value of 0.16mg/m in a working area specified by the national standard3I.e., 0.07ppm, is harmful to human health and is therefore compatible with O3-UV-H2And degrading residual ozone of formaldehyde, benzene and m-xylene by the synergistic action of O for attenuation. Ozonization of air at atmospheric pressure (initial ozone concentration 21-29 mg/m)3) The decay half-life of ozone varies at different temperatures. Specifically, at the same initial ozone concentration, the half-life of ozone is obviously shortened along with the increase of temperature; at the same temperature, the half-life of ozone increases significantly as the initial ozone concentration increases. O is3-UV-H2The concentration of residual ozone for degrading formaldehyde, benzene and m-xylene by the synergistic action of O is generally low, the residual ozone can be attenuated to a safe value within 8 hours at normal temperature, if the concentration of the residual ozone is high under special conditions or the temperature is too low in winter, the attenuation of the ozone can be accelerated by the heating device 8, and the purified air is discharged after the emission requirement is met.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (9)

1. An air purification device, characterized in that: the air purification device comprises a closed cavity, an air inlet and an air outlet are arranged in the cavity, the air purification device further comprises a power supply, an air compressor, an ozone generator, a temperature and humidity controller and an ultraviolet generator, the power supply is located outside the cavity and is connected into the cavity through a lead to provide electric quantity for electric equipment; the air compressor, the ozone generator, the temperature and humidity controller and the ultraviolet generator are dispersedly arranged in the cavity, wherein the air compressor is connected with the air inlet and introduces air to be purified into the cavity; the temperature and humidity controller is connected with the air outlet, and the purified air is guided out of the cavity from the air outlet after passing through the temperature and humidity controller.
2. The air cleaning device according to claim 1, characterized in that: the ultraviolet generator comprises a plurality of ultraviolet lamps, and the ultraviolet lamps are arranged on the side wall of the air purification device in parallel.
3. The air cleaning device according to claim 2, characterized in that: the ultraviolet generator is composed of 5 ultraviolet lamps with the specifications of 3 ultraviolet lamps 8W, 1 ultraviolet lamp 10W and 20 ultraviolet lamps, all the lamp tubes are arranged in the air purification device, and the switch is led out of the air purification device.
4. The air purification apparatus according to any one of claims 1 to 3, wherein: the ultraviolet generator is positioned at the opposite side of the ozone generator.
5. The air purification apparatus according to any one of claims 1 to 3, wherein: the temperature and humidity controller comprises an air duct and a stainless steel pipe, the air duct is positioned in the stainless steel pipe, an interlayer space formed by the air duct and the stainless steel pipe is filled with heat insulation materials, and electric heating wires are arranged in the heat insulation materials; the outer wall of the stainless steel pipe is provided with a temperature sensor, the temperature sensor is connected with a controller, the controller is connected to the electric heating wire in the interlayer space inside the stainless steel pipe, and the air temperature in the air guide pipe is controlled by controlling the electric heating wire; the controller is also connected with a humidity sensor, and a probe of the humidity sensor is positioned in the cavity.
6. The air purification apparatus according to any one of claims 1 to 3, wherein: the air purification device further comprises a fan, wherein the fan is arranged on the inner wall of the air purification device and used for enhancing air flow in the device and increasing purification efficiency.
7. The air purification apparatus according to any one of claims 1 to 3, wherein: the gas outlet is connected with an ozone decomposition device, and the ozone decomposition device is positioned outside the cavity and is used for decomposing unreacted ozone.
8. The air purification apparatus according to any one of claims 1 to 3, wherein: the gas outlet is connected with a heating device, the heating device is positioned outside the cavity and used for heating the unreacted ozone to ensure that the unreacted ozone is attenuated to a safe concentration range and then is discharged.
9. The air cleaning device according to claim 5, wherein: the air purification device further comprises a photocatalyst carrier, the photocatalyst carrier is connected with the air inlet, and the photocatalyst carrier contains a photocatalyst catalyst.
CN201911289860.0A 2019-12-16 2019-12-16 Air purifying device Withdrawn CN111023343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911289860.0A CN111023343A (en) 2019-12-16 2019-12-16 Air purifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911289860.0A CN111023343A (en) 2019-12-16 2019-12-16 Air purifying device

Publications (1)

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Country Status (1)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201138022Y (en) * 2007-12-24 2008-10-22 上海利贞净化科技有限公司 Air-handling unit with purifying and disinfecting function
EP2051746A1 (en) * 2006-07-31 2009-04-29 Microgenix Australasia Pty Ltd Systems and methods for managing air quality
CN202211125U (en) * 2011-08-18 2012-05-09 福建省天禧御茶园茶业有限公司 Constant temperature device
CN107158908A (en) * 2017-06-11 2017-09-15 成都吱吖科技有限公司 A kind of air cleaning system of ozone and ultraviolet
CN206983672U (en) * 2017-07-10 2018-02-09 东莞市滤健环保科技有限公司 Vehicle air purifier
CN207035342U (en) * 2017-07-10 2018-02-23 东莞市滤健环保科技有限公司 Household air purifier
CN208475478U (en) * 2018-06-20 2019-02-05 湖南财经工业职业技术学院 A kind of domestic intelligent air purifier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051746A1 (en) * 2006-07-31 2009-04-29 Microgenix Australasia Pty Ltd Systems and methods for managing air quality
CN201138022Y (en) * 2007-12-24 2008-10-22 上海利贞净化科技有限公司 Air-handling unit with purifying and disinfecting function
CN202211125U (en) * 2011-08-18 2012-05-09 福建省天禧御茶园茶业有限公司 Constant temperature device
CN107158908A (en) * 2017-06-11 2017-09-15 成都吱吖科技有限公司 A kind of air cleaning system of ozone and ultraviolet
CN206983672U (en) * 2017-07-10 2018-02-09 东莞市滤健环保科技有限公司 Vehicle air purifier
CN207035342U (en) * 2017-07-10 2018-02-23 东莞市滤健环保科技有限公司 Household air purifier
CN208475478U (en) * 2018-06-20 2019-02-05 湖南财经工业职业技术学院 A kind of domestic intelligent air purifier

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