CN105983486B - A kind of air cleaning high-pressure ion electret purification device and air cleaning unit - Google Patents

Abstract

The invention discloses a high-efficiency ionization drive + electret filter technology device. When the air in the air inlet passes through at least one corona generating electrode, the gas particles in the air are ionized, and the ionized particles are collected by the opposite potential of the corona electrode. The electrode is attracted and adsorbed on the collecting electrode. When part of the charged and ionized particles pass over the collecting electrode, this part of the ion flow gas particles that is charged and escapes from the collecting electrode enters the electret filter membrane to charge the electret. After being neutralized, the disordered electret dipoles in the electret regain energy and arrange them neatly, showing a stronger and more effective adsorption capacity for dust particles than ordinary passive electrets. Therefore, through the optimized ion flow electrode structure, the present invention provides more powerful electric pump energy than ordinary electrodes, improves the ability to sterilize, removes toxic gases and adsorbs particles such as dust, and provides an air purification field. An air filter device with low wind resistance, energy saving, high sterilization and high adsorption efficiency.

Description

Air purification high-voltage ion electret purification device and air purification device

technical field

The invention relates to an air purification device, in particular to an air purification high-voltage ion electret purification device and the air purification device.

Background technique

The prior art is shown in Fig. 1 (such as US Pat. No. 4,689,056 and No. 5,055,118), which describes that electrostatic air cleaner equipment uses ions and air acceleration generated by corona discharge to charge and collect dust particles. The device utilizes the principle of corona discharge on the side of the corona generating pole ions. This corona discharge is caused by a high electric field generated by a high voltage between the generator and collector. The ions collide with the surrounding air molecules, and the kinetic energy of the ions is transferred to the air, causing the air to move in unison to form the overall movement of the air in the desired direction.

The above-mentioned ionic air purification device can move air, sterilize, collect dust and eliminate harmful gases, but the dust collection effect and the effect of removing TVOC are limited by voltage and ozone. Because the electric field strength is too high, it is easy to cause ignition and generate a large amount of air at the same time. Ozone; if the electric field strength is too low, the dust collection efficiency will be poor. These factors restrict the application of a single electrostatic purification technology in high-demand environments.

Considering that the existing single electrostatic purification technology is limited by voltage and ozone, a composite type of purification equipment called electric bag integration was produced later, as shown in Figure 2. This comprehensive purification device overcomes the shortcomings of low purification efficiency of general electrostatic purification devices, but it brings new problems. If the filter mesh is too large, the purification effect will be poor; if the filter mesh is too small, the wind resistance will be too large. This leads to a serious reduction in energy consumption.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem solved by the present invention is to provide an air purification device with a high-voltage ion electric field and an electrostatic electret filter material, so as to solve the problem that the purification effect of the above-mentioned ion purification device is limited and the energy efficiency ratio is greatly reduced. question.

For achieving the above object, technical scheme of the present invention is:

An air purification high-voltage ion electret purification device, the air purification high-voltage ion electret purification device includes at least one purification unit, that is, an ion electrode group, and the ion electrode group includes and is arranged in sequence according to the direction of air flow:

at least one corona-generating electrode, said at least one corona-generating electrode having a potential opposite to that of said collector;

at least two collectors with an opposite potential to the corona electrodes;

at least one electret consisting of an electret filter membrane;

When the air in the air inlet passes through at least one ionization generator corona electrode, the gas particles in the air are ionized, and the ionized particles are attracted by the collector electrode with the opposite potential to the corona electrode and adsorbed on the collector electrode. When part of the ionization After the particles pass through the collector, this part of the ion flow gas particles that are charged and escape from the collector enters the electret filter membrane to charge the electret, so that the disordered dipoles after being neutralized can regain energy and arrange them neatly. Therefore, it has a stronger and more effective adsorption capacity for dust particles than ordinary passive electrets.

Further, each set of ion electrode groups includes a series of multiple electrically connected filamentary corona electrodes, each corona electrode is parallel to each other, and the ionization edges of all the corona electrodes are distributed on the same plane, and adjacent electrodes The distance between the halo electrodes is D1;

The electrodes interacting with the corona electrode are two or more collectors, each collector is parallel to each other, each collector includes a flat plate part and each collector is arc-shaped toward the corona electrode and has its own Independent arc-shaped ionization edges, the collector series are arranged on the left and right sides downstream of the corona electrode, and the planes formed by the respective ionization edges of the series collectors are parallel to the planes formed by the ionization edges of the corona electrode wire series. The distance between adjacent collectors is D2; the distance D1 is ≥D2 or ≤2*D2-1;

The flat plate part of the collector and the plane formed by the ionized edge of the filamentary corona electrode series are perpendicular to each other, and the distance between the plane determined by the corona electrode series and the ionized edge of the collector series is D3, and D3 is not more than 3 *D2; the collectors have length and height dimensions perpendicular to each other to adjust the direction of lateral air flow;

The plane formed by the electret and the plane formed by the end faces of the collector series are parallel to each other and separated by a certain space distance; the ion flow crossing the collector becomes a charging electric pump for the dipole of the electret.

Further, the corona generator is made of conductive thin wires, preferably tungsten wires, silver-plated wires, gold-plated wires, molybdenum wires, silver wires or gold wires, or two or more of them are braided or intertwined , with diameters ranging from

Further, the collector group is composed of at least two collectors, each collector includes a sheet-shaped body and the front edge of the sheet-shaped body is cylindrical toward the direction of the corona electrode, and is a circular cylindrical protrusion, The top view shows a nearly circular pattern; preferably, the cross-sectional diameter of the collector cylinder is 3-8mm, and the thickness of the sheet-shaped body connected to the cylinder is 0.5-1mm. Preferably, the Collection is made of extremely conductive materials such as aluminum, copper, stainless steel, graphite, conductive plastics or their composites.

Further, the collector is composed of at least one collector assembly, and different collector assemblies have different resistivity; preferably, the collector assemblies of the collector are arranged from high to low in resistivity, and flow with air The directions are the same or reversed; preferably, all the collectors are equipotentially connected; preferably, the collector assembly farthest from the side of the corona generating pole on the collector is provided with a power supply output terminal of contacts.

Further, the adjacent collector assemblies are connected through slots or sockets; preferably, the adjacent collector assemblies are not in contact with each other.

Further, the corona electrode is connected to the positive pole of the power supply or the ground, and the collector is grounded or connected to the negative pole of the power supply; preferably, the corona electrode and/or the collector are made of non-flammable and conductive metal materials.

Further, the electret is a high-molecular polymer filter material with electrostatic adsorption properties after polarization treatment, and its polarization intensity is much smaller than that produced when all the dipoles of the electret filter material are aligned in the same way. Saturation intensity, using ion flow across the collector to charge the electret, thereby acting as an electret electric pump. The electret used in the present invention is a new type of high molecular polymer filter material with electrostatic adsorption properties. Before being put into use, these electret filter materials have been subjected to polarization treatment by corona method, etc., after such treatment The polarization intensity of the electret material is much smaller than the saturation intensity produced when all the dipoles of the electret filter material are aligned in the same way. In these electret filter materials, about 10 ^-2μ C/m ² polarization can be obtained. These electret filter materials are dielectrics polarized in a metastable state with long relaxation times. When the external electric field is removed, its polarization intensity will gradually decrease, and its surface charge will gradually decay exponentially or close to exponentially.

The present invention supplements the energy of the electret precisely aiming at this characteristic of the electret, and charges the filter material of the electret by using the ion flow passing through the collecting electrode, so as to play the role of an electric pump of the filter material of the electret.

According to the calculation formula of electrostatic field potential, φA=Ep/q. We know that the difference between a certain point in the electric field and the zero potential of the reference point is called the potential of the point. "The potential at a point in an electric field is numerically equal to the potential energy of a unit positive charge at that point."

Formula: ε=qφ (where ε is potential energy, q is charge, φ is potential), that is, φ=ε/q

Potential energy in an electrostatic field. The difference between the potential energy of a point charge at two points (such as point A and point B) in the electrostatic field is equal to the work done by the electrostatic force when it moves from point A to point B. So WAB=qEd (E is the electric field intensity at this point, d is the distance along the electric field line),

Electric potential energy can be obtained by doing work by electric field force, because W AB=qUAB=q(ΦA-ΦB)=qΦA-qΦB=EA (beginning)--Eb (end)=-ΔE,

(Φ is the potential, q is the amount of charge, U is the potential difference, EA (beginning) and EB (end) are the potential energy of two points).

According to the above description of the electrostatic field potential formula, we clearly see that the physical distance between the collector and the electret filter material is equivalent to point A (collector) and point B (electret filter) in the electrostatic field. material), when the potential energy φ at point A is locked, the larger the distance d is, the smaller the charge q is.

Further, the polarization intensity of the electret is proportional to the intensity of the ionic electric field, and when the ionic electric field intensity is constant, the polarized electric field intensity of these electret filter materials is related to the plane and collection of the electret filter material. The physical distance of the pole piece from the side plane is inversely proportional.

Further, according to the polarization effect of different electret materials, different electret material meshes, and different ion electric field strengths, the present invention obtains the best Excellent sterilization, deodorization, and dust adsorption effects.

Preferably, the electret is made of a high polymer electret material or a highly insulating fluoropolymer material, such as polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), polyvinylidene fluoride ( PVDF) etc. or their composites.

The present invention also provides an air purification device, which includes the above-mentioned electrode device for air purification high-voltage ion electret purification, and is used to supply the above-mentioned corona generating electrode and collector potential and between the two A power source that generates an electric field that induces a corona discharge.

The advantages of the present invention are: due to the neutralization of charged charges in atmospheric dust or the shielding effect of electrostatic force due to dust deposition, the polarization of the electret will be weakened or disappeared, making it lose the adsorption of dust particles, In order for the electret to regain energy and form a powerful electret, it is necessary to make its neat polarization arrangement exhibit a stronger and more effective adsorption capacity for dust particles than ordinary passive electrets. The invention makes the gas particles in the air be ionized when the air in the air inlet passes through at least one ionization generator corona electrode, and the ionized particles are attracted by the collector electrode with the opposite potential to the corona electrode and adsorbed on the collector electrode. After the partially ionized particles pass through the collector, this part of the ion flow gas particles that are charged and escape from the collector enters the electret filter membrane to charge the electret, so that the disordered dipoles after being neutralized can regain energy and become Arranged neatly, so as to present a more powerful and effective adsorption capacity for dust particles than ordinary passive electrets, the invention creatively uses the gas particles ionized by the electrodes as an electric pump for charging the electret. The invention further improves the adsorption of dust and other particles through the electric pump function of the ion electrode structure, and the function of killing germs again, and makes up for the defect that the dust collection effect of the ion electrode is not as good as that of the HEPA filter. Due to the effect of the electrostatic field, the electret filter holes do not need to be too small, so that the wind resistance of the electret filter material is only about one-third of the HEPA high-efficiency filter with the same filtering effect.

The invention provides an air filter device with low wind resistance, energy saving, high adsorption efficiency and sterilization for the field of air purification.

Description of drawings

Fig. 1 is the schematic diagram of the electrostatic purification electrode device of prior art;

Fig. 2 is a schematic diagram of a composite electric bag-in-one purification device in the prior art;

Figure 3 is a schematic diagram of the working principle of the air-purifying high-voltage ion electret;

Fig. 4 is the schematic diagram of the electrode that corona generation electrode and collector form;

Fig. 5 is a schematic diagram of an air purifier.

Among the figure: corona generation electrode 2, collector pole 3, electret 4, ionization edge 302, plate portion 301, high voltage power supply 100, a set of electrodes 200 that can generate high voltage ion electric field (by a series of power supply electrodes 2 and a series of Collector 3), electret filter 400 (composed of electret 4), photocatalyst 500, total heat exchanger 600, low noise fan 700, primary filter 800, corona plasma area 203, electronic Collision produces ionization 204, unipolar drift region 205, photoionization 206, escaped ion flow (electric pump source) 207, ionization boundary 208, before electret polarization 4-1, after electret polarization 4-2 , Polarization electric field 4-3.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The present invention provides an air-purifying high-voltage ion electret purification device, which is used to prepare an air purifier. As shown in Figure 3 and Figure 4, the air-purifying high-voltage ion electret purification device includes at least one purification unit, that is, an ion electrode group, the ion electrode group includes and arranges the following components in sequence according to the direction of air flow:

At least one corona-generating electrode 2, said at least one corona-generating electrode has a potential opposite to that of said collector;

at least two collectors 3 with opposite potentials to the corona electrodes;

at least one electret 4 consisting of an electret filter membrane;

When the air in the air inlet passes through at least one ionization generator corona electrode 2, the gas particles in the air are ionized, and the ionized particles are attracted by the collector electrode 3 with the opposite potential to the corona electrode and adsorbed on the collector electrode 3, when After the partially ionized particles pass through the collector 3, this part of the ion flow gas particles that are charged and escape from the collector 3 enters the filter membrane of the electret 4 to charge the electret 4, so that the disordered dipoles after being neutralized The energy is regained and arranged in order, thus showing a stronger and more effective adsorption capacity for dust particles than ordinary passive electret 4. Because it has stronger adsorption force than passive electret, it has lower requirements for electret material, and at the same time reduces special power supply and control circuit than ordinary active electret, and uses corona to generate electrode ionized air to generate The ions are used to pump electricity for the electret, which makes the whole system have an unexpected effect.

In addition to selecting various traditional electrode styles, in practical applications, the corona generating electrode 2 can use wire-shaped electrodes. Specifically, each group of ion electrodes includes a series of multiple electrically connected wire-shaped corona electrodes. One corona electrode is parallel to each other, the ionization edges of all corona electrodes are distributed on the same plane, and the distance between adjacent corona electrodes is D1.

At the same time, the electrodes interacting with the corona electrodes are two or more collectors 3, and each collector 3 is parallel to each other. In addition to selecting the traditional collector style, the following structure can also be adopted: each collector 3 includes The plate part 301 (also called sheet-like body) and each collector are arc-shaped towards the direction of the corona electrode 2 and have their own arc-shaped ionization sides 302, and the collector electrodes 3 are arranged in series on the corona electrode On the left and right sides of the downstream, the planes formed by the respective ionized sides 302 of the series collectors 3 are parallel to the planes formed by the ionized sides of the corona electrode wire series, and the distance between adjacent collectors 3 is D2; the D1 distance ≥ D2 or ≤2*D2-1; the plane formed by the plate part 301 (flaky main body) of the collector 3 and the ionization edge of the filamentary corona electrode 2 series is perpendicular to each other, and the plane determined by the corona electrode 2 series and The plane distance determined by the ionized side 302 of the collector 3 series is D3, and D3 is not greater than 3*D2; the collector 3 has a length and a height dimension perpendicular to each other, so as to adjust the horizontal air flow direction; the electret 4 The formed plane is parallel to the plane formed by the end face of the other end of the collector electrode 3 series flat part 301, separated by a certain spatial distance; Electric pump.

In practical applications, the corona generating pole 2 is made of conductive thin wires, preferably tungsten wires, silver-plated wires, gold-plated wires, molybdenum wires, silver wires or gold wires, or two or more of them are woven or interwoven coiled, with diameters ranging from Any value in between (inclusive). For example 0.03mm, 0.05mm and 0.1mm etc. According to the release amount of ozone by the discharge surface area, and with the relation of discharge current=i ² , the thinner the discharge amount of ozone is that the diameter of the conductive wire of preparation corona generating pole 2 is less, considering mechanical strength and electric effect, can select There are 2 corona generating electrodes for example in Fig. 4, and there are three collecting poles 3. Adjacent collecting poles 3 are separated from each other, and each collecting pole 3 is parallel to each other. The distance is D2. The distance between the plane produced by the combination of one group of corona electrode wires 2 shown in Figure 4 and the plane produced by the arc-shaped ionization edge 302 series of collector 3 is D3, and the distance of D3 is based on electric field strength, ignition, ozone generation, insulation The material creepage distance is formulated with reference to the UL867 standard and other comprehensive and mutually restrictive factors. An air purification high-pressure ion electret purification device should provide the highest possible air filtration efficiency, and at the same time should not generate excess ozone. According to UL867 standard article 37, the ozone value should not exceed 50ppb/m ³ . According to the above-mentioned relevant standards, according to the experiment using 12,000 volts of ion electric field power supply, the distance of D3 is between 3*D2-4*D2; the collector has the length and height dimensions perpendicular to each other to adjust and guide the direction of air flow , considering the effect of the eddy current of the ion current and the density of the ion electric field, D1 D2 and D1 2*D2, 2*D2 is used in Figure 4.

According to actual needs and the need to improve the adsorption of particulate matter, in some embodiments, the collector group is composed of at least two collectors 3 (three in Figure 4), and each collector 3 includes a sheet-shaped body (ie, a flat part 301) and the front edge of the sheet-shaped main body are cylindrical toward the direction of the corona electrode, which is a circular cylindrical protrusion (its cylindrical surface just forms an arc-shaped ionization edge 302), and the top view shows a nearly Circular pattern; in practical applications, the cross-sectional diameter of the collector cylinder can be selected from any value between 3-8mm (inclusive), the purpose is to improve the threshold of corona discharge breakdown, so that the ion charge The pump can work safely under a higher electric field strength, and at the same time provide a guarantee for the supply of more sufficient energy for the next-stage ion electric pump. The thickness of the sheet-shaped body connected to the cylinder can be selected as any value between 0.5-1mm (inclusive). In terms of material selection, the collector 3 is made of conductive materials, such as aluminum, copper, stainless steel, graphite, conductive plastics or their composites.

In some other embodiments, the collector 3 is composed of at least one collector assembly, and different collector assemblies have different resistivity; wherein, the optimized solution is that the collector assembly of the collector is made of high resistivity to the low arrangement, and in line with or against the direction of air flow. The purpose of this arrangement is related to the interception of charged ion dust particles according to the distribution of the space electric field. We know that the strength of the ion flow is consistent with the strength of the space electric field. The change of the resistivity makes the ion flow i also change, and the resistivity The higher the component's voltage drop in the space electric field, the stronger the interception ability, and vice versa.

All collectors can be equipotentially connected according to requirements; preferably, a collector assembly farthest from the side of the corona generating electrode on the collector is provided with a contact connected to the output end of the power supply. In the equipotential connection, because there is no need to consider the problem of voltage difference, it is the most reasonable installation method to connect the farthest collector component to the output end of the power supply.

In order to facilitate installation, disassembly and maintenance, the adjacent collector assemblies can optionally be connected through slots or sockets.

In order to improve adsorption efficiency, the adjacent collector assemblies are not in contact with each other.

In practical applications, the corona electrode is connected to the positive pole or ground of the power supply, and the collector is grounded or connected to the negative pole of the power supply; preferably, the corona electrode and/or the collector are made of non-flammable and conductive metal materials.

In effect, the high voltage ion purification electrode structure provides an electric pump for the electret filter material. Its polarization intensity to the electret is proportional to the intensity of the ion electric field; preferably, the polarized electric field intensity experienced by the electret filter material is proportional to the physical distance between the electret filter material plane and the collecting pole piece plane Inverse ratio; preferably, the electret is made of a high polymer electret material or a highly insulating fluoropolymer material, such as polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), polyvinylidene fluoride Vinyl (PVDF), etc. or their composite materials.

From the above summary of the invention, we know that the polarization state of the electret filter material is determined by the preparation method during initialization, and its polarization intensity is proportional to the ion electric field strength in the dynamic work of the filter, that is, the electret The bulk electrostatic field voltage is directly proportional to the physical distance D0 between the adjacent collector sheets within a certain range, and inversely proportional to the physical distance between the electret filter membrane and the collector. When the electret filter material is in the purification work, due to the neutralization of the charged charges in the atmospheric dust or the shielding effect of the electrostatic force generated by the dust deposition, the polarization phenomenon is weakened or disappeared, and the high-voltage ion electrode assembly recommended by this program is formed. Part of the ion flow that crosses the collector will charge the electret filter material, which is equivalent to the polarization treatment of the electret filter material by an external electric field, so that the electret filter material whose polarization effect is attenuated will recover due to regaining energy. It forms a strong and neatly arranged dipole group, and its neat polarization arrangement shows a stronger and more effective adsorption capacity for dust particles than ordinary passive electrets. As shown in Figure 3, after the gas particles and dust particles in the air pass through the corona plasma region 203 generated by the corona generating pole 2 (the ionization boundary is 208), the electrons collide to generate ionization to generate charged particles 204, and pass through the photoionization 206 and single ionization. After the pole drift zone 205 enters the scope of the collector pole 3, most of the dust particles are adsorbed and filtered, and some charged gas particles and dust particles pass through the collector pole 3. The polar body 4 is charged, and under the action of the polarizing electric field 4-3, the electret changes from the disorderly arrangement of dipoles shown by 4-1 before the electret polarization to the electret polarization with the dipoles arranged neatly After 4-2, the adsorption effect of the electret is greatly improved, the escaped dust particles are captured and filtered, and the air purification effect is further improved.

Therefore, the scheme recommended by the present invention further improves the adsorption of particles such as dust and the function of re-killing germs through the electric pump function of the high-voltage ion electrode assembly, and makes up for the defect that the dust collection effect of the ion electrode is not as good as that of the HEPA filter. , At the same time, the electret filter hole does not need to be too small due to the effect of the electrostatic field, so that the wind resistance of the electret filter material is only about one-third of the HEPA high-efficiency filter with the same filtering effect.

The present invention also provides an air purification device, which includes the above-mentioned electrode device for air purification high-voltage ion electret purification high-voltage ion electret purification electrode device, and is used to supply the above-mentioned corona generating electrode and A power source that collects the potential of the electrodes and creates an electric field between them that induces a corona discharge.

As shown in Figure 5, we call this air purification device an air purification high-voltage ion electret fresh air system. The high-voltage ion electret fresh air blower in this case includes: a primary filter 800 (optional), a high-voltage power supply 100, a set of electrodes 200 that can generate a high-voltage ion electric field (composed of a series of power supply electrodes 2 and a series of collector electrodes 3 ), electret filter 400 (made up of electret 4), photocatalyst 500 (optional), total heat exchanger 600 (optional), and low-noise fan 700 (optional). Wherein the electrode assembly that can generate a high-voltage ion electric field is made up of a series of power supply electrodes 2 and a series of collector electrodes 3, as shown in Figure 4, the corona electrode 2 and the air outlet arranged on the corona electrode 2 The collector 3 and this group of electrodes are electrically connected to the high-voltage power supply 100, and a high voltage of more than 10,000 volts is formed between the corona electrode 2 and the collector 3.

The end of the collector 3 facing the corona generating pole 2 is a garden arc-shaped ionization edge 302 with a diameter of Φ5mm, the purpose is to increase the threshold of corona discharge breakdown, so that the ion electric pump can be safely operated at a higher electric field strength. At the same time, it also provides a guarantee for the supply of more sufficient energy for the next-stage ion electric pump.

Most of the dust and germs should be killed and adsorbed in this purification structure, but according to different environments and wind speeds, there are still some charged ion particles, some dust, and escape to the next filter through the collector, but will It is adsorbed and filtered by electret 4.

The electret filter material is a kind of polarized by corona method or other means in advance, but we can clearly see from the above invention that the electret filter material is a metastable polarized dielectric . When the external electric field is removed, its polarization intensity will gradually decrease, and its surface charge will gradually decay exponentially or close to exponentially. Therefore, the scheme recommended by the present invention is to charge the attenuated electret 4 by the ion flow crossing the collector in Fig. 3, so that the dipoles in the electret filter material are rearranged to make up for the polarization intensity attenuation.

According to the Gauss law of electrostatic field, the field strength and surface potential of electret are

【-E+Esεr＝...】

According to the loop theorem of electrostatic field:

Ed+E _s L=0 (2)

Solutions have to:

The above formula E represents the field strength in the air gap. Since the two electrodes are short-circuited, the potential difference between the two surfaces of the electret should be equal to the potential difference between the surface of the electret and the two ends of the air gap between the electrodes, which is the surface potential of the electret. Its absolute value can be expressed as

In the actual measurement, if L<<d, it is used to represent the surface potential under this condition, and there is

According to the calculation formula of the field strength, the surface potential of the electret is only determined by its equivalent surface charge surface density and its own penetration thickness.

In the experiment, we measured the surface potential of the electret through a special surface potentiometer, and cooperated with the feedback circuit of the sensor. We obtained from the experiment that when the corona electrode is at 12000 volts, the D2 of the collector is 8mm, D3=20mm, When the broadband of the flat part of the collector is 38mm, the distance between the plane of the electret filter material and the plane of the collector facing away from the corona electrode is 30mm to 50mm, which is enough to dynamically supplement the attenuated polarizability of the electret filter material. The introduction of this program provides a fresh air purification system with low wind resistance, energy saving, high adsorption efficiency and sterilization for the fresh air system field.

The advantages of the present invention are: due to the neutralization of charged charges in atmospheric dust or the shielding effect of electrostatic force due to dust deposition, the polarization of the electret will be weakened or disappeared, making it lose the adsorption of dust particles, In order for the electret to regain energy and form a powerful electret, it is necessary to make its neat polarization arrangement exhibit a stronger and more effective adsorption capacity for dust particles than ordinary passive electrets. The invention makes the gas particles in the air be ionized when the air in the air inlet passes through at least one ionization generator corona electrode, and the ionized particles are attracted by the collector electrode with the opposite potential to the corona electrode and adsorbed on the collector electrode. After the partially ionized particles pass through the collector, this part of the ion flow gas particles that are charged and escape from the collector enters the electret filter membrane to charge the electret, so that the disordered dipoles after being neutralized can regain energy and become Arranged neatly, so that dust particles have a stronger and more effective adsorption capacity than ordinary passive electrets. The invention creatively uses the gas particles ionized by the electrode as an electric pump to charge the electret, and is a An electric pump adjustable by high voltage and physical distance. The invention further improves the adsorption of dust and other particles through the electric pump function of the ion electrode structure, and the function of killing germs again, and makes up for the defect that the dust collection effect of the ion electrode is not as good as that of the HEPA filter. Due to the effect of the electrostatic field, the electret filter holes do not need to be too small, so that the wind resistance of the electret filter material is only about one-third of the HEPA high-efficiency filter with the same filtering effect.

The invention provides an air filter device with low wind resistance, energy saving, high adsorption efficiency and sterilization for the field of air purification.

The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the inventive concept of the present invention, some modifications and improvements can also be made, and these all belong to the present invention. protection scope of the invention.

Claims (16)

1. a kind of air cleaning high-pressure ion electret purification device, which is characterized in that including at least one clean unit i.e. from Sub-electrode group, the ion electrode group include and set gradually according to the direction that air flows with lower component：

At least one corona electrode, the corona electrode have with collector the electricity with potential Yu corona electrode opposite direction Gesture；

At least two collectors, band and corona electrode opposite potential in the collector；

At least one electret being made of electret filter film；

When the air of air inlet passes through at least one corona electrode, the gas particles in air are ionized, the particle after ionization It is adsorbed on collector by the attraction with corona electrode opposite potential collector, when the particle of partial ionization crosses collection After extremely, the ion stream gas particles of this part electrification evolution collector enter electret filter film and give electret bulk charging, make by Energy is regained and marshalling with the dipole of malalignment after electricity, compares ordinary passive to show to dust granule The more powerful effective adsorption capacity of electret；

Every group of ion electrode group includes a series of Filamentous corona electrode of multiple electrical connections, each corona electrode is mutually flat Row, in the same plane, the distance between neighboring corona electrodes are D1 for the ionization side distribution of all corona electrodes；

Electrode with corona electrode interaction is two or more collectors, is parallel to each other between each collector, each Collector includes that plate part and each collector are arc-shaped towards corona electrode direction and have arc independent Side is ionized, the collector series is respectively in the left and right sides of air inlet and corona electrode downstream, extremely each self-ionization of series of collection It is formed by that plane is parallel, and the distance between adjacent collector pole is when being formed by plane and corona electrode silk series and ionizing D2；D1 distance >=the D2 or≤2*D2-1；

The plate part of the collector is formed by plane with Filamentous corona electrode series ionization side and is mutually perpendicular to, by corona electricity It is D3 that polar system, which arranges plan range determined by identified plane and collector series ionization side, and D3 is not more than 3*D2；The receipts Collector possesses orthogonal length and height dimension, to adjust lateral air-flow direction；

The electret is formed by the plane that plane is formed by with collector series end face and is parallel to each other, and is separated by certain sky Between distance；The ion stream for crossing the collector becomes the charging electric pump of electret dipole.

2. air cleaning high-pressure ion electret purification device according to claim 1, which is characterized in that the corona hair Raw pole is made by conductive filament.

3. air cleaning high-pressure ion electret purification device according to claim 1, which is characterized in that the collector Group is made of at least two collectors, and each collector includes the leading edge of flake main body and flake main body towards corona electrode direction It is cylindric, is a circular cylinder protrusion, top view is shown as the pattern of a near circular.

4. air cleaning high-pressure ion electret purification device according to claim 3, which is characterized in that the collector It is made of at least one collector component, different collector components have different resistance coefficients；Preferably, the collector Collector component is arranged from high to low according to resistance coefficient, and consistent or reversed with the direction of air flowing.

5. air cleaning high-pressure ion electret purification device according to claim 3, which is characterized in that the adjacent receipts It is connected between collector component by slot or jack.

6. according to air cleaning high-pressure ion electret purification device described in claim 1, which is characterized in that the corona electrode Connect positive pole or ground connection, the collector ground connection or connection power cathode.

7. according to claim 1 to 6 any air cleaning high-pressure ion electret purification devices, which is characterized in that institute Stating electret is the high molecular polymer filtering material with Electrostatic Absorption performance after being polarised, and polarization intensity is remote Generated saturation intensity when integrally all dipoles all arrange consistent less than electret filter material, using crossing collector Ion stream gives the electret bulk charging, to play the role of an electret electric pump.

8. air cleaning high-pressure ion electret purification device according to claim 2, which is characterized in that the corona hair Raw pole be made of tungsten wire, plating filamentary silver, plating spun gold, molybdenum filament, filamentary silver or spun gold or in which two or more braidings or mutually winding and At diameter range is

9. air cleaning high-pressure ion electret purification device according to claim 3, which is characterized in that the collector The cross-sectional diameter of cylindrical body is 3-8mm, the flake main body being connected with cylindrical body with a thickness of 0.5-1mm, it is described to collect extremely Conductive material preparation.

10. air cleaning high-pressure ion electret purification device according to claim 4, which is characterized in that the collection The collector component of pole is arranged from high to low according to resistance coefficient, and consistent or reversed with the direction of air flowing.

11. air cleaning high-pressure ion electret purification device according to claim 4, which is characterized in that all collections Pole equipotential link.

12. air cleaning high-pressure ion electret purification device according to claim 4, which is characterized in that the collection A farthest collector component of pole side occurs apart from corona on extremely and is equipped with the contact being connected with power output end.

13. according to air cleaning high-pressure ion electret purification device as claimed in claim 6, which is characterized in that the corona electricity It pole and/or collects extremely non-combustible and conductive metal material and is made.

14. according to claim 1 to 13 any air cleaning high-pressure ion electret purification devices, which is characterized in that It is directly proportional to the intensity of ion electric field to the polarization intensity of electret.

15. air cleaning high-pressure ion electret purification device according to claim 14, which is characterized in that the electret Polarized electric field intensity suffered by body filtering material and electret filter material plane and the physical distance of collector plate plane at Inverse ratio, the electret are prepared by Polymer electrets material or high-insulativity fluoropolymer material.

16. a kind of air cleaning unit, which is characterized in that the air cleaning unit includes that claims 1 to 13 is any described Air cleaning high-pressure ion electret purification device, and for supply above-mentioned corona electrode occurs and collect electrode potential and The power supply for causing the electric field of corona discharge is generated between the two.