CN112413784A - Portable multifunctional air purification method and device - Google Patents
Portable multifunctional air purification method and device Download PDFInfo
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- CN112413784A CN112413784A CN202011363553.5A CN202011363553A CN112413784A CN 112413784 A CN112413784 A CN 112413784A CN 202011363553 A CN202011363553 A CN 202011363553A CN 112413784 A CN112413784 A CN 112413784A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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Abstract
The invention provides a portable multifunctional air purification method and a device, comprising the following steps: (a) connecting a direct current power supply with a direct current transformer to output ultrahigh voltage required by generating air purification plasma; (b) connecting the ultrahigh voltage output by the direct current transformer with a discharge electrode of the plasma generating device, and grounding the other electrode; (c) placing the catalytic module in a plasma generating device to efficiently catalyze air pollutants; (d) and starting the plasma generating device and purifying the air by a fan. The device provides a portable multifunctional air purification device for efficiently removing pollutants such as PM25 and Volatile Organic Compounds (VOCs).
Description
Technical Field
The invention relates to the field of air purification, in particular to a portable multifunctional air purification method and a portable multifunctional air purification device.
Background
With the development of industrial process, the environmental pollution is increasingly intensified, and the atmospheric pollution of inhalable particles, volatile organic compounds, ozone, nitrogen oxides and the like brings more and more serious threats to the health of human beings. In particular, in the indoor environment or closed space, particulate pollutants caused by human activities such as cooking and smoking, and volatile organic compounds volatilized from paints and glue substances in decoration, furniture and the like are hidden in the air breathed by people all the time, and the volatile organic compounds cannot be seen and found, but have great influence on human health and become potential hazards. In the field of air purification, particularly, in the field of technology and equipment for indoor or enclosed spaces, attention is gradually paid to people, and the development of related equipment is urgent.
In the current air purification technology, filtration, electrostatic, adsorption and catalysis are conventional technical means. The plasma is an electrically neutral aggregate composed of a plurality of kinds of active particles (electrons, photons, positive ions, negative ions) and radicals, is a fourth substance existing in a gas-liquid-solid state, and has high chemical reaction activity and electrical conductivity. The low-temperature plasma utilizes active particles such as high-energy electrons, ions, free radicals and the like to enable pollutant molecules to be excited, ionized and dissociated in a very short time so as to achieve the purposes of degrading organic pollutants and sterilizing, and the low-temperature plasma is performed at room temperature, is quick in reaction and high in efficiency, so that the low-temperature plasma becomes a reliable air purification technology. However, the development of the plasma to mobility and portability is greatly limited by the alternating current power supply adopted by the high-voltage supply of the conventional plasma technology, the high-voltage alternating current electric device is expensive in manufacturing cost, the price is dozens of times of that of a general adjustable direct current high-voltage power supply, and the research on the low-temperature plasma is limited to universities and scientific research institutes at present due to factors such as fixed position, electric power limitation, high cost and the like.
Patent document CN202010340316.0 discloses a plasma generator which has a plurality of discharge generating cylinders and can efficiently produce low-temperature plasma, but the device structure is complicated and the requirements for the materials of the discharge electrode and the grounding electrode are high. Patent document CN202010443188.2 discloses a novel low-temperature plasma catalytic device, which can effectively achieve the treatment and conversion of VOCs, and improve the working efficiency and the selectivity of target products, but due to the addition of the catalytic system, the working principle and structure of the device become extremely complex, and the expansibility is poor.
Patent document cn201811507227.x discloses a low-temperature plasma air purification device, which can provide fresh air for a room according to the content of oxygen while purifying the air in the room, but the mobility and the portability of the device are not ideal enough, and the application occasions are limited.
With the innovation and progress of technology, people have more severe requirements on clean, healthy and comfortable air environment. The low-temperature plasma technology is matched with a catalytic means, so that the high-efficiency catalytic decomposition of volatile organic compounds is ensured, meanwhile, the electrostatic trapping principle can be applied to remove particles, the ozone generated by the plasma generating device during corona discharge also has obvious help on the removal of the volatile organic compounds, the unreacted ozone is catalytically removed when passing through the catalytic module, no secondary pollution is caused, and the multi-field cross complementation can provide a solid foundation and a reliable guarantee for the industrialization of the low-temperature plasma technology in the air purification field. However, as mentioned above, there are many problems in the related technologies, such as complicated structure of the plasma device, too high processing cost, unsatisfactory portability and mobility, poor practicability of the catalytic module, low efficiency of purifying air, and inability to realize air cleaning in all directions, so there is an urgent need in the art to develop a plasma catalytic coupling technology, which is feasible, simple in method, novel in principle, small in wind resistance, low in cost, portable and movable in equipment, unlimited in work place, capable of removing multiple pollutants simultaneously, high in purification efficiency, and free of secondary pollution.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a portable multifunctional air purification method and a portable multifunctional air purification device.
According to the present invention, there is provided a portable multifunctional air purification apparatus, comprising:
a dc power supply apparatus 1 for providing a source of energy, comprising: batteries, wires and power switches;
a DC transformer 2 connected to a DC power supply device 1 and outputting an ultra-high voltage capable of generating plasma, includes: a circuit board, a high voltage package module;
a generating device 3 connected to the dc transformer 2 for generating plasma, comprising: the device comprises a shell, a discharge electrode and a grounding electrode;
a catalytic module 4 placed inside the plasma generating device 3 for catalytically decomposing ozone and volatile organic compounds, comprising: a catalyst support and catalyst particles;
the fan 5 connected with the plasma generating device 3 and used for providing airflow power comprises: the fan comprises a fan main body, a filter screen and a fan switch;
the battery is connected with the power switch through a wire;
the high-voltage pack module is arranged on the circuit board;
the discharge electrode and the grounding electrode are oppositely arranged on the shell;
the catalyst particles are disposed on a catalyst support;
the fan main body is connected with a fan switch;
the filter screen sets up in the fan main part.
Preferably, the method further comprises the following steps: a device housing, a work indicator light;
the device shell is arranged outside the portable multifunctional air purification device;
the work indicator lamp is arranged on the shell.
Preferably, the battery is a rechargeable battery;
a charging interface is arranged outside the battery;
the battery can be recharged with a 5 volt or 12 volt adapter.
Preferably, the dc transformer 2 is a circuit board chip;
the size of the DC transformer 2 is in the range of 10cm x 7cm x 2 cm.
The dc transformer may further include a safety switch.
Preferably, the plasma generation device 3 further comprises: a plasma generating device housing.
The shell of the plasma generating device is made of any one of the following materials: -a plastic; -organic glass;
the thickness of the shell of the plasma generating device for placing the discharge electrode is 2mm-10mm, and holes are punched at equal intervals, the aperture is 0.5mm-2mm, the pitch is 5mm-20mm, and the number of the punched holes is 1-10.
The discharge electrode is made of any one of the following materials: -metallic copper; -metallic iron; -metallic nickel; -metallic tungsten.
The length is 5mm-30mm, the electrode is a needle point electrode or a bur electrode, the diameter of the electrode main body cylinder is 0.5mm-2mm, the discharge electrode is arranged at the punching hole of the shell of the plasma generating device, the discharge generating end of the discharge electrode faces to the inside of the shell, and all the electrodes are connected by adopting copper wire leads or aluminum circuit boards.
The discharge electrodes are sequentially distributed along the vertical direction of the electrodes in a serial connection mode, the electrode distance is consistent with the hole distance of the shell, and the diameter of the discharge electrodes is matched with the hole diameter of the shell;
the grounding electrode is made of aluminum, iron, copper or stainless steel materials, and is plate-shaped, linear, semicircular or cylindrical;
the distance between the discharge electrode and the grounding electrode is 1mm-10mm, and the placement direction of the grounding electrode is vertical or parallel to the direction of the discharge electrode;
the catalyst carrier adopts any one of the following components: -honeycomb aluminium; -a honeycomb ceramic; -glass fibers; -a molecular sieve;
the catalyst particles may employ any one or more of: -manganese-based oxides; -oxides of cobalt series; -an iron-based oxide; -a nickel based oxide; -a copper based oxide; -cerium-based oxides.
The invention provides a portable multifunctional air purification method, which comprises the following steps:
step S1: connecting a direct current power supply with a direct current transformer to output ultrahigh voltage required by plasma for purifying air;
step S2: connecting the ultrahigh voltage output by the direct current transformer with a discharge electrode of the plasma generating device, and grounding the other electrode;
step S3: placing the catalytic module in a plasma generating device to efficiently catalyze air pollutants;
step S4: and starting the plasma generating device and the fan to purify the air, and acquiring portable multifunctional air purification information.
Preferably, the step S1 includes:
step S1.1: the DC power supply can be dry batteries or storage batteries, and the voltage range is 5V to 24V.
Preferably, the step S2 includes:
step S2.1: the ultrahigh voltage output by the direct current transformer ranges from 1 kilovolt to 10 kilovolts, and the plasma generation mode is direct current corona discharge.
Preferably, the step S3 includes:
step S3.1: the catalytic module adopts any one or more of the following carriers: -honeycomb aluminium; -a honeycomb ceramic; -glass fibers; -a molecular sieve; loading a catalyst capable of efficiently catalyzing and decomposing ozone and volatile organic compounds on the catalytic module;
the loading method adopts any one of the following methods: -hydrothermal method; -impregnation; -coating process.
Preferably, the step S4 includes:
step S4.1: the fan adopts the group battery to supply power, and the fan effect form is blast air or convulsions.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a portable plasma generating method and a device, and simultaneously, a catalytic means is matched to realize the simultaneous removal of particulate pollutants and volatile organic compounds;
2. the method is feasible and the device is simple, thereby solving the problems in the prior art;
3. the invention has reasonable structure and convenient use and can overcome the defects of the prior art.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of a portable multifunctional air purification method according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a DC plasma generator and DC plasma effect diagram according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a representative electrode shape and its arrangement with a ground electrode in the present invention.
Fig. 4 is a schematic view of the principle of multifunctional air purification according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The inventor of the application provides a portable plasma air purification method and device through extensive and intensive research aiming at the problems of complex structure, poor mobility, poor air purification applicability and the like of a plasma device and combining the prior art, thereby being capable of helping the achievement transformation and the practical application of the plasma technology and effectively promoting the further development of the plasma technology in the field of air purification.
The technical concept of the invention is as follows:
the plasma device which is required to be moved by a fixed power supply can be moved randomly without being limited by the place of a power supply by adopting a high-voltage package module and a portable and movable dry battery or storage battery combination; furthermore, a plasma generating device which is simple in structure, low in cost and stable in discharge is designed and processed by means of the generation characteristics of direct current plasma, ions generated by discharge can charge and capture and remove particulate matters, and generated ozone and high-energy particles can participate in oxidative decomposition of volatile organic matters; furthermore, the catalyst is combined with a catalytic means to decompose and remove volatile organic compounds in the polluted air more efficiently, and the problem of secondary pollution caused by ozone generated by discharge is solved.
The plasma device has the advantages that the movable power supply is combined with the plasma generator which is designed and processed independently, the cost of the expensive alternating-current high-voltage power supply is reduced, the simplicity and the portability of the plasma device are realized, the plasma and a catalysis means can be effectively combined due to the design characteristics of the device, the cost is low, no secondary pollution is caused, the comprehensive purification of air can be realized, and the technical characteristics can promote the further industrial application of the plasma technology in the field of air purification.
In a first aspect of the present invention, there is provided a portable multifunctional air purification method, comprising the steps of:
a, connecting a direct current power supply with a direct current transformer to output ultrahigh voltage required by plasma for purifying air;
b, connecting the ultrahigh voltage output by the direct current transformer with a discharge electrode of the plasma generating device, and grounding the other electrode;
c, placing the catalytic module in the plasma generating device to efficiently catalyze air pollutants;
and d, starting the plasma generating device and the fan to purify the air.
In the invention, the direct current power supply can be a dry battery or a storage battery, the storage battery can be used for realizing the sustainable utilization of the battery through secondary charging, and the voltage range of the direct current power supply is 5V to 24V according to the required input voltage of the high-voltage pack module.
In the invention, the ultrahigh voltage output by the direct current transformer ranges from 1 kilovolt to 1 kilovolt, the specific voltage is established according to the discharge corona and the spark breakdown voltage, and the influence factors of the corona voltage comprise the electrode size, the discharge interval, environmental factors and the like. The plasma generation mode is direct current corona discharge, the discharge is stable, the power is low, and the plasma area is optimized through device design (such as electrode size, discharge interval, electrode material, arrangement mode and the like).
In the invention, the catalytic module adopts honeycomb aluminum, honeycomb ceramic, glass fiber, molecular sieve and the like as carriers and loads a catalyst capable of efficiently catalyzing and decomposing ozone and volatile organic compounds.
In the invention, the fan is powered by the battery pack, and the fan is used for blowing or exhausting.
In a second aspect of the present invention, there is provided a portable multifunctional air cleaning device, comprising:
the direct current power supply device for providing an energy source comprises a dry battery or a storage battery main body, positive and negative electric wires and a switch;
the direct current transformer is connected with the direct current power supply device and used for outputting the ultrahigh voltage capable of generating the plasma, and comprises a circuit board, a high-voltage package module and an input/output lead; and
the generator connected with the DC transformer and used for generating plasma comprises a shell, a discharge electrode and a grounding electrode.
A catalytic module (4) which is arranged inside the plasma generating device and comprises a catalyst carrier and catalyst particles for catalytically decomposing ozone and volatile organic matters;
and the fan (5) is connected with the plasma generating device and used for providing airflow power, and comprises a fan main body, a filter screen, a switch and a power supply battery.
In the present invention, the apparatus further includes an apparatus housing, a work indicator lamp, and the like.
In the invention, the storage battery adopts a rechargeable battery, a charging interface is arranged outside the storage battery, and the storage battery can be matched with a 5-volt or 12-volt adapter for secondary charging.
In the invention, the DC transformer adopts a circuit board chip design scheme, the size is within the range of 1cm x 7cm x 2cm, and the DC transformer can also comprise a safety switch.
In the invention, the shell of the discharge device is made of plastic or organic glass and other insulating materials, the thickness of the shell for placing the discharge electrode is 2mm-1mm, and holes are punched at equal intervals, wherein the hole diameter is 5mm-2mm, the hole distance is 5mm-2mm, and the number of the punched holes is 1-1.
In the invention, the discharge electrode is made of metal copper, iron, nickel, tungsten and the like, is 5-3 mm long and is in the shape of a needle point electrode or a bur electrode, the diameter of a cylinder of an electrode main body is 5-2 mm, the discharge electrode is placed at a punching hole of a shell of the discharge device, a discharge generating end faces the inside of the shell, and the electrodes are connected by adopting a copper wire lead or an aluminum circuit board.
In the invention, the discharge electrodes are sequentially distributed in a series connection mode along the vertical direction of the electrodes, the electrode spacing is consistent with the shell hole spacing, the diameter of the discharge electrodes is matched with the shell hole diameter, the grounding electrode is made of aluminum, iron, copper or stainless steel materials and is shaped into a plate, a line, a semicircle or a cylinder, the distance between the electrode and the grounding electrode is 1mm-1mm, and the placement direction of the grounding electrode is vertical or parallel to the direction of the discharge electrodes.
In the invention, the catalytic module consists of a catalyst carrier and catalyst particles, wherein the carrier is honeycomb aluminum, honeycomb ceramics, glass fiber, molecular sieve and the like, the catalyst particles are one or a combination of more of manganese oxides, cobalt oxides, iron oxides, nickel oxides, copper oxides and cerium oxides, and the loading method is a hydrothermal method, an impregnation method, a coating method and the like. The catalytic module can be placed at the downstream outlet of the airflow of the plasma generating device, and the catalytic module loaded on the molecular sieve or the glass fiber can also be directly placed on the grounding polar plate of the plasma generating device.
In the prior art, a power supply required by plasma generation is generally a high-voltage alternating-current power supply, the price is high, the use occasion is limited, the efficacy is high by relying on the traditional dielectric barrier discharge mode, and the device structure is complex. The method combines a movable power supply with a plasma generator which is designed and processed independently, reduces the cost of an expensive alternating current high-voltage power supply, realizes the simplicity and portability of the plasma device, is simple and stable, is matched with a catalytic means, ensures the efficient catalytic decomposition of volatile organic compounds, can remove particles by applying an electrostatic trapping principle, has obvious help to remove the volatile organic compounds by ozone generated during the corona discharge of the plasma generator, and has no secondary pollution because the unreacted ozone is removed by catalysis when passing through a catalytic module. The method is feasible, the device is simple, the principle is novel, the wind resistance is small, the cost is low, the equipment can be moved in a portable mode, the working occasion is not limited, and multiple pollutants can be removed simultaneously.
Reference is made to the accompanying drawings.
Fig. 1 is a schematic view of a portable multifunctional air purification method according to an embodiment of the present invention. As shown in fig. 1, the positive and negative electrodes of a dc power supply (1) are respectively connected to positive and negative interfaces at the input end of a dc transformer (2) and are connected to control the on/off of the dc transformer, the input voltage is boosted and converted by a high voltage pack module, the high voltage output required for generating the dc plasma is connected to the electrode of a plasma generating device (3), the dc plasma is generated between a discharge electrode and a ground electrode, a catalytic module (4) placed at the downstream outlet of the plasma generating device can efficiently catalyze and decompose ozone and various volatile organic compounds generated by static electricity, and a fan (5) can provide airflow power for air purification.
Fig. 2(a) is a schematic diagram of a dc plasma generator according to an embodiment of the present invention. As shown in fig. 2(a), the dc plasma generator includes a semicircular ground plate, needle-shaped discharge electrodes, leads connecting the discharge electrodes, and a housing.
FIG. 2(b) is a schematic diagram of the DC plasma effect of the apparatus of FIG. 2 (a). As shown in fig. 2(b), the plasma region is clearly evident, and the discharge is stable.
FIG. 3 is a schematic diagram of a representative electrode shape and its arrangement with a ground electrode in the present invention. As shown in fig. 3(a), the electrode is in the shape of a needle point, the grounding electrode is in the shape of a flat plate, and the electrode and the grounding electrode are vertically distributed, and the arrangement mode is suitable for a plasma generator with a rectangular section. As shown in fig. 3(b), the electrode is in the shape of a needle point, the grounding electrode is in the shape of a semicircle, and the electrode and the grounding electrode are vertically distributed, and the arrangement mode is suitable for a plasma generator with a circular section. As shown in fig. 3(c), the electrode is in the shape of a burr, the grounding electrode is in the shape of a flat plate, and the electrode and the grounding electrode are distributed in parallel, and the arrangement mode is suitable for a plasma generator with a rectangular section. It should be noted that the figures are merely illustrative of exemplary electrode shapes and arrangements of electrodes with respect to ground in the present invention, including but not limited to these forms.
Fig. 4 is a schematic view of a multi-functional air purification principle according to an embodiment of the present invention. As shown in fig. 4, the polluted air contains particulate matter and volatile organic compounds, and after entering the plasma generating device, the ions generated during discharging can charge the particulate matter, so that the particulate matter is trapped on the grounding polar plate under the action of electric field force and removed, in addition, the ozone and high-energy particles generated during discharging have oxidative decomposition action on the volatile organic matter, and the undecomposed volatile organic matter and the ozone not participating in the reaction can realize high-efficiency catalytic decomposition on the catalytic module at the downstream of the plasma generating device, and after the plasma discharging action and the catalytic module, the polluted air is comprehensively purified.
Examples
The invention is further illustrated below with reference to specific examples. It is to be understood, however, that these examples are illustrative only and are not to be construed as limiting the scope of the present invention.
Example 1:
according to the method and the device, the polluted air is subjected to purification treatment such as particulate matter trapping, volatile organic compound oxidation, catalytic decomposition and the like.
The method comprises the following steps: the method is characterized in that 8-section 15-volt dry batteries are used as a direct-current power supply and connected to a direct-current transformer, the output high voltage of the transformer is 6 kilovolts, the output high voltage is connected to a discharge electrode of a plasma generating device, a catalytic module is placed at a downstream outlet of the plasma generating device, and the plasma generating device and an air exhaust fan are started to purify air.
The device includes: specifically, the direct current power supply comprises 8 sections of 15V dry batteries, a control switch and positive and negative connecting leads; the direct current transformer comprises a high-voltage package module capable of outputting 6 kilovolt high voltage, a circuit board chip, a safety switch and a working indicator lamp; the plasma generating device comprises a shell, a discharge electrode and a grounding electrode, wherein the shell is made of organic glass, the thickness of the shell is 2mm, the cross section of the shell is circular, the aperture of the shell is 1mm, the hole pitch of the shell is 2mm, the number of punched holes is 7, the discharge electrode is made of tungsten metal, the length of the discharge electrode is 1mm, the diameter of the discharge electrode is 1mm, the shape of the discharge electrode is a needle point shape, the size of the needle point is 25mm, the number of the electrodes is 7, the electrodes are connected in series by adopting copper wires, the grounding electrode is made of aluminum, the grounding electrode is semicircular, the distance between the electrode and the grounding electrode is 5mm, and the placement direction of the; a catalytic module comprising a honeycomb aluminum support and a supported manganese dioxide catalyst; the fan comprises a fan main body, a power supply battery, a switch and a filter screen.
And (3) testing conditions are as follows:
1 cigarette was lit in a 125 cubic bin, mixed evenly with an electric fan, and the unit was then placed in and turned on for 3 minutes with an initial PM25 particulate concentration of 18pcs/mL and a formaldehyde concentration of 12 ppm.
The experimental results are as follows:
after air purification treatment, the concentration of PM25 particles is 5pcs/L, and the concentration of formaldehyde is 2 ppm.
Example 2:
according to the method and the device, the polluted air is subjected to purification treatment such as particulate matter trapping, volatile organic compound oxidation, catalytic decomposition and the like.
The method comprises the following steps: the method is characterized in that 1 section of 12-volt rechargeable storage battery is used as a direct-current power supply and is connected to a direct-current transformer, the output high voltage of the transformer is 4 kilovolts, the output high voltage is connected to a discharge electrode of a plasma generating device, a catalytic module is placed at the downstream outlet of the plasma generating device, and the plasma generating device and an air exhaust fan are started to purify air.
The device includes: specifically, the direct current power supply comprises 1 section of 12-volt rechargeable storage battery, a control switch and positive and negative connecting leads; the direct current transformer comprises a high-voltage pack module capable of outputting 4 KV high voltage, a circuit board chip, a safety switch and a working indicator lamp; the plasma generating device comprises a shell, a discharge electrode and a grounding electrode, wherein the shell is made of organic glass, the thickness of the shell is 5mm, the cross section of the shell is rectangular, the aperture of the shell is 8mm, the hole pitch is 15mm, the number of punched holes is 1, the discharge electrode is made of tungsten metal, the length of the discharge electrode is 1mm, the diameter of the discharge electrode is 8mm, the shape of the discharge electrode is a needle point shape, the size of the needle point is 2mm, the number of electrodes is 1, the electrodes are connected in series by adopting copper wires, the grounding electrode is made of aluminum, the grounding electrode is flat, the distance between the electrode and the grounding electrode is 3mm, and the placement direction of the grounding electrode is; a catalytic module comprising a honeycomb aluminum support and a supported manganese dioxide catalyst; the fan comprises a fan main body, a power supply battery, a switch and a filter screen.
And (3) testing conditions are as follows:
1 cigarette was lit in a 125 cubic bin, mixed evenly with an electric fan, and the unit was then placed in and turned on for 6 minutes with an initial PM25 particulate concentration of 18pcs/mL and a formaldehyde concentration of 12 ppm.
The experimental results are as follows:
after air purification treatment, the concentration of PM25 particulate matter is pcs/L, and the concentration of formaldehyde is ppm.
Example 3:
according to the method and the device, the polluted air is subjected to purification treatment such as particulate matter trapping, volatile organic compound oxidation, catalytic decomposition and the like.
The method comprises the following steps: the method is characterized in that 1 section of 12-volt rechargeable storage battery is used as a direct-current power supply and is connected to a direct-current transformer, the output high voltage of the transformer is 5 kilovolts, the output high voltage is connected to a discharge electrode of a plasma generating device, a catalytic module is placed at the downstream outlet of the plasma generating device, and the plasma generating device and an air exhaust fan are started to purify air.
The device includes: specifically, the direct current power supply comprises 1 section of 12-volt rechargeable storage battery, a control switch and positive and negative connecting leads; the direct current transformer comprises a high-voltage package module capable of outputting 2 KV high voltage, a circuit board chip, a safety switch and a working indicator lamp; the plasma generating device comprises a shell, a discharge electrode and a grounding electrode, wherein the shell is made of organic glass, the thickness of the shell is 5mm, the cross section of the shell is rectangular, the aperture of the shell is 1mm, the hole pitch is 2mm, the number of punched holes is 7, the discharge electrode is made of tungsten metal, the length of the discharge electrode is 2mm, the diameter of the discharge electrode is 1mm, the shape of the discharge electrode is burred, the size of burred needle points is 1mm, the number of burred needle points is 5, the distance of the burred needle points is 2mm, the burred needle points are distributed in a staggered mode in sequence, the electrodes are connected in series through copper wires, the grounding electrode is made of aluminum and is shaped into a flat plate, the distance between the electrodes and the grounding electrode; a catalytic module comprising a honeycomb aluminum support and a supported manganese dioxide catalyst; the fan comprises a fan main body, a power supply battery, a switch and a filter screen.
And (3) testing conditions are as follows:
2 cigarettes were lit in a 125 cubic bin, mixed evenly using an electric fan, and the device was then placed in and turned on for 3 minutes with an initial PM25 particulate concentration of 35pcs/mL and a formaldehyde concentration of 25 ppm.
The experimental results are as follows:
after air purification treatment, the concentration of PM25 particles is 16pcs/L, and the concentration of formaldehyde is 5 ppm.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A portable multifunctional air purification device, comprising:
direct current power supply apparatus (1) for providing a source of energy, comprising: batteries, wires and power switches;
a DC transformer (2) connected to a DC power supply device (1) and outputting an ultra-high voltage capable of generating plasma, comprising: a circuit board, a high voltage package module;
a generating device (3) connected to a dc transformer (2) for generating a plasma, comprising: the device comprises a shell, a discharge electrode and a grounding electrode;
a catalytic module (4) placed inside the plasma generating device (3) for catalytically decomposing ozone and volatile organic compounds, comprising: a catalyst support and catalyst particles;
a fan (5) connected to the plasma generating device (3) for providing a flow power, comprising: the fan comprises a fan main body, a filter screen and a fan switch;
the battery is connected with the power switch through a wire;
the high-voltage pack module is arranged on the circuit board;
the discharge electrode and the grounding electrode are oppositely arranged on the shell;
the catalyst particles are disposed on a catalyst support;
the fan main body is connected with a fan switch;
the filter screen sets up in the fan main part.
2. The portable multifunctional air purification apparatus of claim 1, further comprising: a device housing, a work indicator light;
the device shell is arranged outside the portable multifunctional air purification device;
the work indicator lamp is arranged on the shell.
3. The portable multifunctional air purification device of claim 1, wherein the battery is a rechargeable battery;
a charging interface is arranged outside the battery;
the battery can be recharged with a 5 volt or 12 volt adapter.
4. The portable multifunctional air purification device according to claim 1, wherein the direct current transformer (2) is a circuit board chip;
the size of the DC transformer (2) is within the range of 10cm x 7cm x 2 cm;
the direct current transformer also comprises a safety switch.
5. A portable multifunctional air purification apparatus as claimed in claim 1, wherein said plasma generation device (3) further comprises: a plasma generating device housing;
the shell of the plasma generating device is made of any one of the following materials:
-a plastic;
-organic glass;
the thickness of a shell of the plasma generating device for placing the discharge electrode is 2mm-10mm, and holes are punched at equal intervals, wherein the hole diameter is 0.5mm-2mm, the hole distance is 5mm-20mm, and the number of the punched holes is 1-10;
the discharge electrode is made of any one of the following materials:
-metallic copper;
-metallic iron;
-metallic nickel;
-metallic tungsten;
the length of the electrode is 5mm-30mm, the electrode is a needle point electrode or a bur electrode, the diameter of a main body cylinder of the electrode is 0.5mm-2mm, a discharge electrode is arranged at a punching hole of a shell of the plasma generating device, the discharge generating end of the discharge electrode faces the inside of the shell, and the electrodes are connected by adopting a copper wire or an aluminum circuit board;
the discharge electrodes are sequentially distributed along the vertical direction of the electrodes in a serial connection mode, the electrode distance is consistent with the hole distance of the shell, and the diameter of the discharge electrodes is matched with the hole diameter of the shell;
the grounding electrode is made of aluminum, iron, copper or stainless steel materials, and is plate-shaped, linear, semicircular or cylindrical;
the distance between the discharge electrode and the grounding electrode is 1mm-10mm, and the placement direction of the grounding electrode is vertical or parallel to the direction of the discharge electrode;
the catalyst carrier adopts any one of the following components:
-honeycomb aluminium;
-a honeycomb ceramic;
-glass fibers;
-a molecular sieve;
the catalyst particles may employ any one or more of:
-manganese-based oxides;
-oxides of cobalt series;
-an iron-based oxide;
-a nickel based oxide;
-a copper based oxide;
-cerium-based oxides.
6. A portable multifunctional air purification method is characterized by comprising the following steps:
step S1: connecting a direct current power supply with a direct current transformer to output ultrahigh voltage required by plasma for purifying air;
step S2: connecting the ultrahigh voltage output by the direct current transformer with a discharge electrode of the plasma generating device, and grounding the other electrode;
step S3: placing the catalytic module in a plasma generating device to catalyze air pollutants;
step S4: and starting the plasma generating device and the fan to purify the air, and acquiring portable multifunctional air purification information.
7. The portable multifunctional air purification method according to claim 6, wherein the step S1 includes:
step S1.1: the DC power supply can be dry batteries or storage batteries, and the voltage range is 5V to 24V.
8. The portable multifunctional air purification method according to claim 6, wherein the step S2 includes:
step S2.1: the ultrahigh voltage output by the direct current transformer ranges from 1 kilovolt to 10 kilovolts, and the plasma generation mode is direct current corona discharge.
9. The portable multifunctional air purification method according to claim 6, wherein the step S3 includes:
step S3.1: the catalytic module adopts any one or more of the following carriers:
-honeycomb aluminium;
-a honeycomb ceramic;
-glass fibers;
-a molecular sieve;
loading a catalyst capable of catalytically decomposing ozone and volatile organic matters on the catalytic module;
the loading method adopts any one of the following methods:
-hydrothermal method;
-impregnation;
-coating process.
10. The portable multifunctional air purification method according to claim 6, wherein the step S4 includes:
step S4.1: the fan adopts the group battery to supply power, and the fan effect form is blast air or convulsions.
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| CN113577999A (en) * | 2021-07-02 | 2021-11-02 | 杭州电子科技大学 | Rotary discharge type air purification device and method |
| CN116078156A (en) * | 2023-03-15 | 2023-05-09 | 珠海格力电器股份有限公司 | Air purifying device |
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