CN215086059U - Air purification device for treating pollutants by using activated water generated by plasma - Google Patents
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
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Abstract
The invention provides an air purification device for treating pollutants by using activated water generated by plasma, which comprises a plasma activated water generating unit, an atomized water generating unit, a plasma discharging unit and an ozone removing unit, wherein the plasma activated water generating unit, the atomized water generating unit, the plasma discharging unit and the ozone removing unit are sequentially arranged along the air flowing direction; the atomized water generating unit comprises a water tank and an ultrasonic atomizer arranged in the water tank; the plasma activated water generation unit comprises a quartz glass tube which is arranged in the water tank along the vertical direction, a hollow high-voltage electrode is arranged in the quartz glass tube, and a ground electrode is arranged on the periphery of the quartz glass tube; air forms a gas-liquid mixed medium through the matching of the quartz glass tube, the high-voltage electrode and the ground electrode to block the generation of discharge plasma, and activated water is formed in the water tank; the device of the invention fully utilizes the advantages of different plasma sources to integrally purify bacteria, viruses, particles, volatile organic compounds and the like in the indoor air, and effectively purify the indoor air.
Description
Technical Field
The invention relates to an air purification device, in particular to an air purification device for treating pollutants by using activated water generated by plasma.
Background
With the rapid development of modern industry and urbanization, the living standards of people are improved to different degrees, and the demand for high living quality is higher and higher, but the surrounding environment where people live is worsened, especially the air pollution including indoor air pollution, according to the investigation, at least half of the time of each person is in the indoor environment, wherein the indoor time of the old, children, pregnant women and patients is longer, and the demand for the air quality is higher. The pollution to indoor air is mainly classified into three categories, namely solid particles such as smoke, pollen, dust and the like; microorganisms such as viruses, bacteria, spores, fungi, and the like; and thirdly, volatile harmful gases such as formaldehyde, toluene and the like.
Because the indoor air treatment mode is greatly different from the industrial waste gas treatment mode and is required to be carried out at normal temperature and normal pressure, the advanced oxidation technology becomes a commonly adopted method, wherein the commonly used methods are a photocatalysis technology, an adsorption filtration method and a plasma method, and for the photocatalysis technology, under the irradiation of an ultraviolet lamp, a photocatalyst can decompose volatile harmful gas into harmless small molecular gas, but because the concentration of the volatile harmful gas in the indoor air is lower, the removal effect of the photocatalysis mode is not ideal; the adsorption filtration method mainly utilizes active carbon and molecular sieve to filter the pollutants, reaches the purpose of purification, but adsorption material all has certain adsorption capacity, when using a period, has reached adsorption material's the biggest adsorption capacity after, adsorption material will have lost the adsorption efficiency, but also can cause secondary pollution to the air easily. Most of the existing mainstream air purifiers adopt an adsorption filter screen to purify air, so that a client needs to frequently replace and clean the filter screen, and the mainstream air purifiers are complex.
The plasma method is to treat the air pollutant through the plasma discharge, the plasma suitable for indoor air treatment is classified according to the discharge mode, there are two kinds mainly, one kind is corona discharge, another kind is dielectric barrier discharge, corona discharge is suitable for the treatment to particulate matter and microorganism generally, because of discharging weakly, the treatment effect to volatile organic matter is general, the corona discharge at present generally adopts single positive corona or negative corona, lack positive and negative corona, namely lack the course that the solid particulate matter grows; dielectric barrier discharge is more suitable for treating volatile organic compounds, but has little treatment effect on solid particles, the dielectric barrier discharge applied to an indoor purifier at present generally adopts air as discharge gas, the mode of air discharge has a main effect on treating pollutants, namely ozone, which is a broad-spectrum bactericide, has good removal effect on volatile harmful gases, bacterial microorganisms and the like, but when the concentration of ozone exceeds a certain standard, certain damage is caused to human bodies, so that at present, a few plasma air technologies adopt plasma generating devices which generate ozone as little as possible, the generation amount of ozone is reduced, the effect of air purification is certainly weakened, in addition, the method still hardly ensures that the plasma air purifier works in a closed indoor environment for a long time, the content of generated ozone exceeds the standard.
Disclosure of Invention
The present invention is directed to an air purification apparatus using plasma to generate and activate water to treat pollutants, so as to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
an air purification device for treating pollutants by using plasma to generate activated water comprises a plasma activated water generating unit, an atomized water generating unit, a plasma discharging unit and an ozone removing unit which are sequentially arranged along the air flowing direction;
the atomized water generating unit comprises a water tank and an ultrasonic atomizer arranged in the water tank;
the plasma activated water generation unit comprises a quartz glass tube which is arranged in the water tank along the vertical direction, a hollow high-voltage electrode is arranged in the quartz glass tube, and a ground electrode is arranged on the periphery of the quartz glass tube; the quartz glass tube is provided with an inner layer and an outer layer, and the inner layer and the outer layer are matched to coat the inner side and the outer side of the high-voltage electrode;
air forms gas-liquid mixed medium through the cooperation of the quartz glass tube, the high-voltage electrode and the ground electrode to block discharge plasma to generate, activated water is formed in the water tank, the activated water is mixed with the air entering from the high-voltage electrode, and then the activated water mist is formed by the ultrasonic atomizer and is conveyed to the plasma discharge unit.
As a further scheme of the invention: the gas-liquid mixed medium of the plasma activated water generation unit blocks discharge plasma generation and adopts a high-frequency high-voltage alternating current power supply or a pulse high-voltage power supply for power supply, the high-voltage end of the power supply is connected with a high-voltage electrode, and the low-voltage end of the power supply is grounded.
As a further scheme of the invention: the ground electrode is composed of water and a stainless steel net, a water pump is connected outside the water tank in a conduction mode, an outlet of the water pump is matched with the ground electrode, and water is supplied to the ground electrode through the cooperation of the water tank and the water pump.
As a further scheme of the invention: the plasma discharge unit comprises a positive corona discharge area, an alternating current corona discharge area, a negative corona discharge area and an ion wind discharge area which are sequentially arranged along the air flowing direction.
As a further scheme of the invention: the positive corona discharge area consists of a first needle-shaped electrode and a mesh electrode, and electrode needles of the first needle-shaped electrode correspond to meshes of the mesh electrode one by one;
the positive corona discharge area is powered by a high-voltage direct-current power supply, the first needle-shaped electrode is connected with positive high-voltage electricity, and the mesh electrode is grounded.
As a further scheme of the invention: the alternating current corona discharge area is composed of a plurality of layers of first linear electrodes, the first linear electrodes of each layer are arranged on a plane in parallel at equal intervals, and lines among the layers are arranged vertically;
the alternating-current corona discharge area consists of second linear electrodes and plate-shaped electrodes, the second linear electrodes and the plate-shaped electrodes are alternately arranged, and the second linear electrodes of each layer are arranged on a plane in parallel at equal intervals;
the negative corona discharge area is powered by a high-voltage direct-current power supply, the second linear electrode is connected with negative high-voltage electricity, and the plate electrode is grounded.
As a further scheme of the invention: the ion wind discharge area consists of a second needle electrode and an annular electrode, and the second needle electrode is superposed with the central axis of the annular electrode;
the ion wind discharge area is powered by a high-voltage direct-current power supply, the second needle electrode is connected with negative high-voltage electricity, and the annular electrode is grounded.
As a further scheme of the invention: the ozone removal unit is an ultraviolet lamp or a catalyst capable of adsorbing ozone.
Compared with the prior art, the invention has the beneficial effects that:
after the structure is adopted, the purifying channel in the air purifying device sequentially comprises the hollow high-voltage electrode, the water tank of the atomized water generating unit, the atomizing area, the positive corona area, the alternating corona area, the negative corona area, the ion wind area and the ultraviolet area, ozone which is not utilized in the plasma discharging process is sent into water, and a step-by-step disinfection method is adopted, so that the ozone disinfection is effectively utilized, the harm of the ozone exceeding the standard is effectively eliminated, and the disinfection is very comprehensive and efficient.
The plasma activated water is generated by gas-liquid mixed medium barrier discharge plasma, the generated activated water is atomized by an ultrasonic atomizer to form activated water mist, and after the activated water mist is fully contacted with gas, sterilization, VOCs degradation and preliminary filtration and dust removal can be carried out; and the activated water mist and the particulate matters PM2.5 grow in a combined manner through the positive corona discharge area, the alternating current corona discharge area and the ionic wind discharge area in the plasma discharge unit, the atomized water and the particulate matters PM2.5 after growing are removed through the negative corona discharge area, the ionic wind discharge area generates negative ionic wind, and the generated pure negative ionic wind can be released to a purification space for further purification through the ozone removal unit. The device makes full use of the advantages of different plasma sources, integrally purifies bacteria, viruses, particles, volatile organic compounds and the like in the indoor air, and effectively purifies the indoor air.
Drawings
Fig. 1 is a schematic view showing the overall structure of an air purification apparatus for treating pollutants by using plasma to generate activated water.
Fig. 2 is a schematic diagram of a negative corona in an air purification device using plasma to generate activated water to treat pollutants.
FIG. 3 is an enlarged view of a portion of a negative corona in an air purification device utilizing plasma to generate activated water to treat contaminants.
FIG. 4 is a side view of a negative corona in an air purification device utilizing plasma to generate activated water to treat contaminants.
FIG. 5 is a side view of a negative corona in an air purification device utilizing plasma to generate activated water to treat contaminants.
Fig. 6 is a schematic diagram of an electrical coagulation structure in an air purification apparatus for treating pollutants by using plasma to generate activated water.
Fig. 7 is a partially enlarged view of an electrocoagulation in an air cleaning apparatus for treating pollutants by using plasma to generate activated water.
Fig. 8 is a side view of an electrocoagulation in an air purification device for treating pollutants using plasma generated activated water.
Fig. 9 is a side view of an electrocoagulation in an air purification device for treating pollutants using plasma generated activated water.
FIG. 10 is a schematic diagram of a positive corona in an air purification device using plasma generation to activate water treatment contaminants.
FIG. 11 is a partial enlarged view of the positive corona in an air cleaning device using plasma generation to activate water treatment contaminants.
Fig. 12 is a side view of a positive corona in an air purification device that utilizes plasma generation to activate water treatment contaminants.
Fig. 13 is a side view of a positive corona in an air purification device that utilizes plasma generation to activate water treatment contaminants.
Fig. 14 is a schematic structural diagram of an air purification apparatus for generating negative ions for activating water treatment pollutants by using plasma.
FIG. 15 is a partial enlarged view of negative ions of an air purification device for treating pollutants by using plasma to generate activated water.
In the figure: 1. a plasma activated water generating unit; 101. a quartz glass tube; 102. a high voltage electrode; 103. a ground electrode; 104. Activating water; 105. activating water mist; 2. an atomized water generating unit; 201. a water tank; 202. an ultrasonic atomizer; 203. a water pump; 3. a plasma discharge unit; 301. a positive corona discharge region; 302. an alternating current corona discharge region; 303. a negative corona discharge region; 304. an ionic wind discharge zone; 4. an ozone removal unit.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-15, an air purification apparatus for treating pollutants by using plasma generated activated water comprises a plasma activated water generating unit 1, an atomized water generating unit 2, a plasma discharging unit 3 and an ozone removing unit 4 sequentially arranged along an air flowing direction; the atomized water generating unit 2 comprises a water tank 201 and an ultrasonic atomizer 202 arranged in the water tank 201, and generates atomization by performing ultrasonic oscillation on the activated water 104, wherein the oscillation frequency is 1.7MHz, and the atomized water comes from the activated water 104 generated by gas-liquid mixed discharge; the plasma activated water generating unit 1 comprises a quartz glass tube 101 arranged in a water tank 201 along the vertical direction, a hollow high-voltage electrode 102 is arranged in the quartz glass tube 101, and a ground electrode 103 is arranged on the periphery of the quartz glass tube 101; the quartz glass tube 101 has an inner layer and an outer layer, the inner layer and the outer layer are matched to cover the inner side and the outer side of the high-voltage electrode 102, the inner side and the outer side of the high-voltage electrode 102 are covered, and heat generated by the high-voltage electrode 102 in the discharge process is taken away by gas in the high-voltage electrode 102 and water vapor between the high-voltage electrode 102 and the ground electrode 103.
Air forms gas-liquid mixed dielectric barrier discharge plasma through the matching of the quartz glass tube 101, the high-voltage electrode 102 and the ground electrode 103 to generate activated water 104 in the water tank 201, the activated water 104 is mixed with the air entering from the high-voltage electrode 102, and then the activated water mist 105 formed by the ultrasonic atomizer 202 is conveyed to the plasma discharge unit 3; the plasma activated water generating unit 1 is generated by gas-liquid mixed dielectric barrier discharge plasma, a high-voltage electrode 102 of a gas-liquid mixed dielectric barrier discharge channel is made of metal or other conductive materials, the high-voltage electrode 102 is coated by an insulating medium, a ground electrode 103 is made of water and stainless steel meshes, the number of the discharge channels is a natural number larger than 1, and discharge working gas is air and water vapor; the gas-liquid mixed medium has two main types of particles which are generated by barrier discharge and have good effects on sterilization and VOCs removal, one type is O3、H2O2Another class of molecules of (A) is an oxygen-reactive group and a nitrogen-reactive group, the oxygen-reactive group consisting essentially of1O2OH, nitrogen active groups mainly comprise ONOO-NO.
The gas-liquid mixed dielectric barrier discharge plasma of the plasma activated water generating unit 1 is generated by adopting a high-frequency high-voltage alternating current power supply or a pulse high-voltage power supply, the high-voltage end of the power supply is connected with the high-voltage electrode 102, and the low-voltage end of the power supply is grounded.
Specifically, the ground electrode 103 is composed of water and a stainless steel mesh, a water pump 203 is conductively connected outside the water tank 201, an outlet of the water pump 203 is adapted to the ground electrode 103, and water is supplied to the ground electrode 103 through cooperation of the water tank 201 and the water pump 203. The water is used as the part of the ground electrode 103 and the liquid part of the gas-liquid mixed discharge, and the water is obtained from a water tank 201 of the atomized water generator and pumped by a water pump 203.
In addition, the plasma discharge unit 3 includes a positive corona discharge region 301, an alternating-current corona discharge region 302, a negative corona discharge region 303, and an ionic wind discharge region 304, which are arranged in this order in the air flow direction.
Further, the positive corona discharge region 301 is composed of a first needle-shaped electrode and a mesh electrode, wherein electrode needles of the first needle-shaped electrode correspond to meshes of the mesh electrode one by one; the first needle-shaped electrode and the mesh-shaped electrode are both made of metal materials or other conductive materials, and the mesh number of the first needle-shaped electrode and the mesh-shaped electrode is a natural number greater than 1;
the positive corona discharge area 301 is powered by a high-voltage direct-current power supply, the first needle-shaped electrode is connected with positive high-voltage electricity, and the mesh electrode is grounded.
Further, the alternating current corona discharge area 302 is composed of a plurality of layers of first linear electrodes, the first linear electrodes of each layer are arranged on a plane in parallel at equal intervals, lines among the layers are vertically arranged, and the number of the first linear electrodes of each layer is a natural number greater than 1;
the alternating current corona discharge area 302 is powered by a high-voltage alternating current power supply, the frequency of the power supply is 20-100kHz, the first linear electrodes of adjacent layers are opposite in polarity, and the first linear electrodes of the same layer are the same in polarity.
Further, the negative corona discharge region 303 is composed of second linear electrodes and plate-shaped electrodes, the second linear electrodes and the plate-shaped electrodes are alternately arranged, the second linear electrodes of each layer are arranged on a plane in parallel at equal intervals, and the number of layers of the second linear electrodes and the number of the plate-shaped electrodes are natural numbers greater than 1;
the negative corona discharge region 303 is powered by a high-voltage direct-current power supply, the second linear electrode is connected with negative high-voltage electricity, and the plate electrode is grounded.
Further, the ion wind discharge area 304 is composed of a second needle electrode and a ring electrode, the second needle electrode coincides with the central axis of the ring electrode, and the number of the second needle electrode and the ring electrode is a natural number greater than 1;
the ion wind discharging area 304 is powered by a high-voltage direct-current power supply, the second needle electrode is connected with negative high-voltage electricity, and the annular electrode is grounded.
Specifically, the ozone removing unit 4 is an ultraviolet lamp or a catalyst capable of adsorbing ozone, the light generated by the ultraviolet lamp is 254nm ultraviolet light, the number of the ultraviolet light can be one or more, and the working state of the ozone removing unit selects the luminous intensity according to the ozone content at the outlet.
In this embodiment, this device does not use the absorption filter screen, has only adopted the gas equalization net, therefore has saved the trouble that the filter screen was changed, and the disinfection process is very convenient, energy-conserving. In the working process of the device, the device generating main noise is arranged inside the sound insulation device, so that the noise generated in the disinfection process is effectively reduced, and the disinfection process is quite quiet.
The working principle of the invention is as follows: the purification channel of the device comprises a hollow high-voltage electrode 102, a water tank 201 and an atomization zone of an atomized water generation unit 2, a positive corona discharge zone 301, an alternating current corona discharge zone 302, a negative corona discharge zone 303, an ionic wind discharge zone 304 and an ultraviolet ray zone in sequence; the plasma activated water is generated by gas-liquid mixed medium barrier discharge plasma,
activated water 104 after production atomizes through ultrasonic atomization device, form activated water fog 105, activated water fog 105 and gaseous after full contact, can disinfect, degradation VOCs and preliminary filtration remove dust, through four kinds of plasma discharge regions, positive corona district makes activated atomized water and particulate matter electrified, the exchange corona district makes activated atomized water and particulate matter PM2.5 combine to grow, negative corona district gets rid of the atomized water and particulate matter PM2.5 after growing up, the ion wind district will produce the anion wind, once more through ozone removing device, can produce pure anion wind and release and carry out further purification to the clean space.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (9)
1. An air purification device for treating pollutants by using activated water generated by plasma is characterized by comprising a plasma activated water generating unit (1), an atomized water generating unit (2), a plasma discharging unit (3) and an ozone removing unit (4) which are sequentially arranged along the air flowing direction;
the atomized water generating unit (2) comprises a water tank (201) and an ultrasonic atomizer (202) arranged in the water tank (201);
the plasma activated water generation unit (1) comprises a quartz glass tube (101) which is arranged in a water tank (201) along the vertical direction, a hollow high-voltage electrode (102) is arranged in the quartz glass tube (101), and a ground electrode (103) is arranged on the periphery of the quartz glass tube (101); the quartz glass tube (101) is provided with an inner layer and an outer layer, and the inner layer and the outer layer are matched to coat the inner side and the outer side of the high-voltage electrode (102);
air forms gas-liquid mixed medium through the cooperation of the quartz glass tube (101), the high-voltage electrode (102) and the ground electrode (103) to block discharge plasma generation, activated water (104) is formed in the water tank (201), the activated water (104) is mixed with air entering from the high-voltage electrode (102), and then an ultrasonic atomizer (202) forms activated water mist (105) and conveys the activated water mist to the plasma discharge unit (3).
2. The air purification device for treating pollutants by using activated water generated by plasma as claimed in claim 1, wherein the gas-liquid mixed medium of the plasma activated water generation unit (1) blocks discharge plasma generation and is powered by a high-frequency high-voltage alternating current power supply or a pulse high-voltage power supply, the high-voltage end of the power supply is connected with the high-voltage electrode (102), and the low-voltage end of the power supply is grounded.
3. An air purification apparatus for treating pollutants by using water activated by plasma as claimed in claim 1, wherein the ground electrode (103) is composed of water and stainless steel net, a water pump (203) is conductively connected to the outside of the water tank (201), the outlet of the water pump (203) is adapted to the ground electrode (103), and water is supplied to the ground electrode (103) through the cooperation of the water tank (201) and the water pump (203).
4. An air cleaning device for treating pollutants by using plasma generation and activation water as defined in claim 1, characterized in that said plasma discharge unit (3) comprises a positive corona discharge area (301), an alternating corona discharge area (302), a negative corona discharge area (303) and an ionic wind discharge area (304) which are arranged in sequence along the air flow direction.
5. An air cleaning device for treating pollutants by using activated water generated by plasma as claimed in claim 4, wherein the positive corona discharge region (301) is composed of a first needle electrode and a mesh electrode, and the electrode needle of the first needle electrode is in one-to-one correspondence with the mesh of the mesh electrode;
the positive corona discharge area (301) is powered by a high-voltage direct-current power supply, the first needle-shaped electrode is connected with positive high-voltage electricity, and the mesh electrode is grounded.
6. An air cleaning device for treating pollutants by using activated water generated by plasma as claimed in claim 4, wherein the AC corona discharge region (302) is composed of a plurality of layers of first linear electrodes, the first linear electrodes of each layer are arranged on a plane in parallel and at equal intervals, and the lines between the layers are arranged vertically;
the alternating current corona discharge area (302) is powered by a high-voltage alternating current power supply, the frequency of the power supply is 20-100kHz, the first linear electrodes of adjacent layers are opposite in polarity, and the first linear electrodes of the same layer are the same in polarity.
7. An air cleaning device for treating pollutants by using activated water generated by plasma as claimed in claim 4, wherein said negative corona discharge region (303) is composed of second linear electrodes and plate electrodes, the second linear electrodes and the plate electrodes are alternately arranged, and the second linear electrodes of each layer are arranged on a plane in parallel at equal intervals;
the negative corona discharge region (303) is powered by a high-voltage direct-current power supply, the second linear electrode is connected with negative high-voltage electricity, and the plate-shaped electrode is grounded.
8. An air cleaning device for treating pollutants by using activated water generated by plasma as claimed in claim 4, wherein the ion wind discharging area (304) is composed of a second needle electrode and a ring electrode, and the second needle electrode is coincident with the central axis of the ring electrode;
the ion wind discharging area (304) is powered by a high-voltage direct current power supply, the second needle electrode is connected with negative high-voltage electricity, and the annular electrode is grounded.
9. An air cleaning device for treating pollutants by using plasma generation and activation water according to claim 1, characterized in that the ozone removing unit (4) is an ultraviolet lamp or a catalyst capable of adsorbing ozone.
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