WO2024027754A1

WO2024027754A1 - Air purification filter element and air purification device

Info

Publication number: WO2024027754A1
Application number: PCT/CN2023/110723
Authority: WO
Inventors: 唐万福
Original assignee: 深圳先净科技有限公司
Priority date: 2022-08-05
Filing date: 2023-08-02
Publication date: 2024-02-08
Also published as: CN115301409A

Abstract

An air purification filter element, comprising: filter units (100), each filter unit (100) comprising a first electrode body (110) and a second electrode body (120) which have different polarities. The first electrode body (110) comprises a first main piece (111) and at least two first branch pieces (117) connected to the first main piece (111), and the at least two first branch pieces (117) are oppositely arranged and form a first recess (114) together with the first main piece (111). The second electrode body (120) comprises a second main piece (121) and at least two second branch pieces (127) connected to the second main piece (121), and the at least two first branch pieces (117) are oppositely arranged and form a second recess (124) together with the second main piece (121). The edge portion of one of the first branch pieces (117) of the first electrode body (110) is suspended in the second recess (124) or at a recess opening, and/or the edge portion of one of the second branch pieces (127) of the second electrode body (120) is suspended in the first recess (114) or at a recess opening.

Description

An air purification filter element and air purification device

Technical field

The present invention relates to the technical field of air purification, and in particular to an air purification filter element and an air purification device.

Background technique

Air purification refers to the removal of particles, aerosols, organic molecular groups, viruses, bacteria, odors, etc. in the air. It is widely used in building interiors, transportation cabins, industrial purification workshops, and semiconductor lithography equipment.

Since traditional technology uses filter media to achieve air purification, the purification effect is limited by the pore size of the filter material itself. Micron level 10 is the filtration and purification limit that current filtration technology can achieve, and the filtration device is huge and consumes high energy. Traditional filtration technology cannot be applied to photolithography machine purification and virus filtration to filter nanoscale particles.

Whether it is 5-nanometer or 7-nanometer lithography equipment and semiconductor workshops, they need to reach the nanometer zero-level purification level to ensure chip yield. Micron-level ten technology cannot meet the needs of modern chip processing; for other types of air purifiers, in order to prevent viruses For airborne transmission, it is necessary to be able to filter virus particles ranging from 50 nanometers to 130 nanometers to achieve air virus purification. Otherwise, the virus will be spread through the air.

The electrostatic dust collection technology has made great progress from the first-generation symmetrical plate electrode electric field to the second-generation electric field of the plate wire structure. The dust collection efficiency has increased from 70% to 95%, and is expected to be further improved. The electret electrostatic filtration technology derived from electrostatic technology has also made breakthroughs, and the efficiency of filtering particles with a diameter of 100 nanometers has also been increased to 99%. However, in the face of nano-zero requirements, neither technology can be realized. Therefore, the current air purification device cannot further improve the filtration and purification capabilities to meet the nano-zero filtration and purification requirements.

Contents of the invention

The technical problem to be solved by the present invention is to provide an air purification filter element and an air purification device to solve the problem that the existing air purification device cannot further improve the filtration and purification capability.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

An air purification filter element, including: several filter units arranged in sequence, the filter units including first electrode bodies and second electrode bodies of different polarities;

The first electrode body includes a first main piece and at least two first branch pieces connected to the first main piece. At least two of the first branch pieces are arranged opposite to each other and are connected to the first main piece. Together they form the first groove;

The second electrode body includes a second main piece and at least two second branch pieces connected to the second main piece. At least two of the first branch pieces are arranged opposite and connected with the second main piece. Together they form a second groove;

Wherein, an edge of one of the first branches of the first electrode body is suspended inside or at the notch of the second groove, and/or one of the second electrode bodies is The edge of the second support piece is suspended inside the first groove or at the groove opening.

Further, the cross-sections of the first electrode body and the second electrode body are both I-shaped, and the first electrode body and the second electrode body are arranged in a staggered arrangement facing each other in the vertical direction;

An edge of one of the first branches of the first electrode body is suspended inside the second groove;

An edge of one of the second support pieces of the second electrode body is suspended inside the first groove.

Further, the cross-sections of the first electrode body and the second electrode body are both C-shaped;

The first electrode body and the second electrode body are arranged in a staggered arrangement facing each other in the horizontal direction;

An edge of one of the first branches of the first electrode body is suspended at the notch of the second groove;

An edge of one of the second support pieces of the second electrode body is suspended at the notch of the first groove.

Further, the cross-sections of the first electrode body and the second electrode body are both Z-shaped;

In the current filter unit, the edge of the first support piece that is not used to form the first groove is suspended inside the second groove;

In the current filter unit, the edge portion of the second support piece that is not used to form the second groove is suspended inside the first groove of the adjacent filter unit.

Further, an electret is provided at the outlet of the filter unit, and the distance between the outlet of the filter unit and the inlet of the electret is 0 to 50 mm.

Further, the electret is independently selected from one material selected from the group consisting of polytetrafluoroethylene, glass, and composite fiber non-woven cotton.

Further, the distance between the two first support pieces used to form the first groove and the second support piece suspended inside the first groove or at the notch opening are equal;

The distance between the two second support pieces used to form the second groove and the first support piece suspended inside the second groove or at the notch opening are equal.

Further, several filter units are arranged in an annular shape to form an annular air purification filter element.

Furthermore, the material of the first electrode body is stainless steel or aluminum alloy; the material of the second electrode body is stainless steel or aluminum alloy.

An air purification device, including: an electrode support structure, a housing, a power supply, a fan, a controller, and an air purification filter element as described in any one of the above;

The power supply, the fan, and the controller are installed in the housing, and the air purification filter element is provided on the electrode support structure and installed on the housing through the electrode support structure;

The power supply is electrically connected to the fan, the controller and the air purification filter element respectively; the controller is electrically connected to the fan and the air purification filter element respectively.

The beneficial effects of the present invention are: in the present invention, the first electrode body is provided with a first groove and a first support piece, and the second electrode body is provided with a second groove and a second support piece. The second support piece is suspended inside or at the notch, or the first support piece is suspended inside the second groove or at the notch, so that a multi-level electric field is formed between the first electrode body and the second electrode body. Electrostatic adsorption channel, thereby improving the filtration capacity of the air purification filter element.

Description of the drawings

Figure 1 is a schematic structural diagram of an air purification filter element according to Embodiment 1 of the present invention;

Figure 2 is a schematic structural diagram of an air purification filter element according to Embodiment 2 of the present invention;

Figure 3 is a first structural schematic diagram of an air purification filter element according to Embodiment 3 of the present invention;

Figure 4 is a second structural schematic diagram of the air purification filter element according to Embodiment 3 of the present invention;

Figure 5 is a third structural schematic diagram of the air purification filter element according to Embodiment 3 of the present invention.

Label description:

100. Filter unit; 110. First electrode body; 111. First main piece; 112. First upper support piece; 113. First lower support piece; 114. First groove; 115. First left side; 116 , the first right part; 117, the first support piece; 120, the second electrode body; 121, the second main piece; 122, the second upper support piece 123, the second lower support piece; 124, the second groove; 125 , the second left part; 126, the second right part; 127, the second piece; 200, electret.

Detailed ways

In order to describe the technical content, achieved objectives and effects of the present invention in detail, the following description will be made in conjunction with the embodiments and the accompanying drawings.

Embodiment 1

Please refer to Figures 1 to 5. Embodiment 1 of the present invention is:

An air purification filter element used in air purification devices of central air conditioners, purification workshops, car cabins, high-speed rail carriages, etc.

Referring to FIGS. 1 to 5 , the air purification filter element includes: several filter units 100 arranged in sequence. The filter units 100 include first electrode bodies 110 and second electrode bodies 120 with different polarities. The first electrode body 110 includes a first main piece 111 and at least two first support pieces 117 connected to the first main piece 111. At least two of the first support pieces 117 are arranged opposite each other and are connected to the first main piece 111. The first main pieces 111 together form a first groove 114 . The second electrode body 120 includes a second main piece 121 and at least two second support pieces 127 connected to the second main piece 121. At least two of the first support pieces 117 are oppositely arranged and form a second groove together with the second main piece 121. 124. Wherein, an edge of one of the first branches 117 of the first electrode body 110 is suspended inside or at the notch of the second groove 124, and/or, the second electrode body 120 The edge of one of the second supporting pieces 127 is suspended inside or at the notch of the first groove 114 . The first electrode body 110 may be an integral structure or a split structure; the second electrode body 120 may be an integral structure or a split structure.

The structural principle of the air purification filter element in this embodiment is: the first electrode body 110 is provided with a first groove 114 and a first support piece 117, and the second electrode body 120 is provided with a second groove 124 and a second support piece. 127, the second support piece 127 is suspended inside the first groove 114 or at the notch, and/or, the first support piece 117 is suspended inside or at the notch of the second groove 124, thereby forming a multi-level electric field. The electrostatic adsorption channel causes the particles in the air to attach electrons and be adsorbed to the first electrode body 110 or the second electrode body 120. After being adsorbed by a multi-level electric field, purified air is obtained.

It can be understood that in this embodiment, corresponding grooves, main pieces, and support pieces are respectively provided on the first electrode body 110 and the second electrode body 120, so that the first electrode body 110 and the second electrode body 120 serve as discharge electrodes for each other. Each time it passes through a first-level electric field, the adsorption efficiency will increase, thereby further improving the filtration capacity of the air purification filter element and air purification device.

In addition to being unable to directly filter nanoparticles, the current filtration and purification technology adopts a multi-layer stacking solution to filter nanoparticles using filter materials with micron filtration technology, which will inevitably cause problems such as high resistance, high energy consumption, and material waste. Since stacking hundreds of layers can barely achieve micron-level filtration, the dust holding rate of the filter material decreases and becomes disposable, resulting in material waste. If there are too many filtration levels, the resistance will increase, and the ventilation noise and vibration will increase. In order to overcome the resistance, the filtration area must be increased, which will increase the volume of the device and increase energy consumption.

Compared with existing filtration and purification technology, the air purification filter element used in this embodiment can achieve a nano-zero-level filtration effect without the need for multiple layers of filter elements. Therefore, it has the characteristics of low resistance, low noise, and energy saving.

Please refer to FIG. 1 . Optionally, the cross sections of the first electrode body 110 and the second electrode body 120 are both I-shaped (can be U-shaped in other embodiments). The first electrode body 110 and the second electrode bodies 120 are arranged in a staggered arrangement facing each other in the vertical direction. An edge of one of the first branches 117 of the first electrode body 110 is suspended inside the second groove 124 . An edge of one of the second support pieces 127 of the second electrode body 120 is suspended inside the first groove 114 . Among them, the first electrode body 110 is a negative electrode, and the second electrode body 120 is a positive electrode.

In this embodiment, the first groove 114 is formed by the first upper support piece 112 , the first main piece 111 and the first lower support piece 113 , and the second groove 124 is formed by the second upper support piece 122 , the second main piece 121 And a second lower support piece 123 is formed, the second upper support piece 122 is located inside the first groove 114 , and the first lower support piece 113 is located inside the second groove 124 . The edge of the first upper support piece 112 discharges the second upper support piece 122 to form a first-level electric field. The air containing particles enters the first-level electric field, and the oxygen in the air is ionized to produce excess oxygen ions. The air passes through the first-level electric field. When the electric field is high, the ionized oxygen ions transfer electrons to the particles, and the negative The polar particles (including negative ions and negative polar particles) are pressed to the adsorption surface of the second upper support piece 122 for the first time. Since the edges of the first upper support piece 112 and the second upper support piece 122 form a weak inverted triangular cone-shaped second-level electric field, the second-level electric field repels negative polarity particles and absorbs positive polarity particles (including positive ions and positive polarity particles). particles) or uncharged neutral particles, and boost the flow of ions to form airflow boost. The edge of the second upper support piece 122 forms a third level with the first main piece 111, and forms a fourth level electric field with the first lower support piece 113. The third and fourth level electric fields also absorb neutral particles and positive polarity. Particles continue to repel negative polarity particles.

Due to the adsorption of positive polarity particles and neutral particles and the repulsion of negative polarity ions by the second-level, third-level, and fourth-level electric fields, an ion gravitational turbulence is formed that boosts the positive polarity particles and neutral particles, and is pushed to the The fifth-level electric field formed by the edge of the first lower branch piece 113 and the second upper branch piece 122 has the same effect as the first-level electric field, and is used to ionize more gas ions and promote the remaining particles to be negatively charged. , pressing the remaining negative polar particles to the adsorption surface of the second upper support piece 122 for the second time. The edge of the first lower branch piece 113 forms a sixth-level electric field with the second main piece 121 and forms a seventh-level electric field with the second lower branch piece 123. The sixth-level and seventh-level electric fields have the same characteristics as the fifth-level electric field. function and form ion gravity turbulence that boosts negative polarity ions. The edge of the second lower support piece 123 and the first lower support piece 113 form an eighth-level electric field. The adsorption of the eighth-level electric field is extremely negative. Due to multiple adsorptions in the previous levels of electric fields, very few ions can actually reach the eighth-level electric field. The excessively ionized gas ions and binding molecules will pass through the eighth-level electric field. And it is pushed out under the action of the repulsive electric field force of the eighth-level electric field.

Furthermore, an electret 200 is provided at the outlet of the filter unit 100. The excess ionized gas ions and binding molecules are pushed to the electret 200, releasing electrons, resulting in the formation of positive and negative polarities inside the electret 200. Obtain micro-electric field force to further capture smaller escaping particles.

For example, taking 23-nanometer particles as an example, 99% of particles in the air are adsorbed by the first level of electric field, and each subsequent level of electric field continues to absorb escaping particles, and each level of electric field will bring 99% Improvement of adsorption efficiency. Among them, the eighth-level electric field and the electret 200 electric field are used as backup adsorption electric fields to adsorb particles that partially fail and escape at the exit of the channel. It is understandable that the eight-level electric field assists the polarity of positive, neutral and negative ions respectively, causing the particles to flow forward in the adsorption channel, further improving the dust collection efficiency of the electric field and avoiding current consumption caused by ions retrograde. The air purification filter element with a mutual discharge electrode structure in this embodiment adopts a wind speed of 0.8m/s and has a filtration efficiency of 23 nanometer particles of more than 99.99999%.

It can be understood that in the air purification filter element and air purification device of this embodiment, the electrode bodies adopt a specific structure, and a fluid processing structure is formed between the electrode bodies and the positive and negative poles of the power supply are provided to form a superimposed multi-level electric field, and the gas is fully ionized. , a large number of extremely fine particles are fully charged, and are charged repeatedly, which greatly improves the adsorption efficiency and has a dynamic adsorption function to achieve multi-effect adsorption, which has the effect of doubling the traditional Venturi effect, cyclone effect, and gravity effect. The gas being processed traverses the line-surface discharge electric field cone-shaped space, and repeatedly passes through different discharge polarity electric fields to prevent particles that have not transferred electrons from escaping, prevent particles that are prone to loss of electricity from being adsorbed, and reduce the repulsion of same-sex particles. Through repeated ionization, the small molecule gas in the gas to be processed is completely ionized, which improves the electron transfer efficiency and generates excess charged gas to supplement the electric field of the electret 200 material with electrons. By different polarity discharge electrodes and The adsorption pole encloses ions, which is conducive to the formation of assisted flow chambers and auxiliary airflow to improve adsorption efficiency. In addition, through sufficient ionization, gas-liquid-solid separation, directional transfer of electrons, electric field screening of molecules, elimination of internal heat generated by electric field ion reduction, etc. are achieved.

In this embodiment, the distance between the outlet of the filter unit 100 and the inlet of the electret 200 is 0 to 50 mm.

Specifically, the electret 200 is independently selected from one material selected from polytetrafluoroethylene, glass, composite fiber non-woven cotton, and the like. It can be understood that in this embodiment, the electret 200 is formed by using a material with polarizable and filtering properties of the electret 200 .

Specifically, the distance between the two first support pieces 117 used to form the first groove 114 and the second support piece 127 suspended inside or at the opening of the first groove 114 is equal. The distance between the two second support pieces 127 used to form the second groove 124 is equal to the first support piece 117 suspended inside or at the opening of the second groove 124 .

It can be understood that in this embodiment, the distance between each two adjacent branches is kept the same, which is conducive to maintaining a stable and consistent air flow in the adsorption channel, and allows each level of electric field formed to have good adsorption and ionization effects.

Specifically, the first electrode body 110 is made of stainless steel, aluminum alloy, etc.; the second electrode body 120 is made of stainless steel, aluminum alloy, etc. The first electrode body 110 and the second electrode body in this embodiment are 120 is made of metal sheets through sheet metal and other processes. Among them, the material of the electrode body gives priority to conductive properties and corrosion resistance properties.

In this embodiment, the electret 200 uses filter cotton made of composite materials to achieve the purification of nanoparticles and the volatilization and degradation of organic nanoparticles. After the polluted air is adsorbed by the filter unit 100 and the electret 200, particle adsorption and organic matter degradation are achieved. In addition, the air purification filter element can be made into a replacement element according to the size of the existing air conditioner or air purifier filter element to replace origami, filter cotton, composite activated carbon filter, chemical filter, full-effect filter and other types. Filter element. In other embodiments, the electret 200 may also be a plate electric field composite electret 200, a plate wire electric field composite electret 200, a honeycomb electric field composite electret 200 or a Venturi plate electric field composite electret 200.

Embodiment 2

Please refer to Figure 2. This embodiment provides a second air purification filter element. Different from the first embodiment, which adopts an I-shaped electrode body with a cross-section, in this embodiment, the first electrode body 110 and the second The cross section of the electrode body 120 is C-shaped or semicircular. The first electrode body 110 and the second electrode body 120 are arranged facing each other and staggered in the horizontal direction. An edge of one of the first branches 117 of the first electrode body 110 is suspended at the notch of the second groove 124 . An edge of one of the second support pieces 127 of the second electrode body 120 is suspended from the notch of the first groove 114 . This embodiment has the same technical features as those in Embodiment 1, and their working principles and technical effects will not be described again here.

This embodiment adopts an arc-shaped first electrode body 110 and a second electrode body 120. The two first branch pieces 117 of the first electrode body 110 are respectively connected with the first main piece 111 to form an arc-shaped curved surface and a semicircle or semicircle-like surface. The first groove 114, the two second support pieces 127 of the second electrode body 120 are respectively connected with the second main piece 121 to form an arc-shaped curved surface and a semicircular or semicircular second groove 124. The first electrode body 110 includes a first left part 115 and a first right part 116 at the opening of the first groove 114. The first right part 116 corresponds to the middle part of the bottom of the second groove 124 and is suspended from the second groove. at the opening of the groove 124; the second electrode body 120 It includes a second left part 125 and a second right part 126 at the notch of the second groove 124. The second left part 125 corresponds to the middle part of the bottom of the first groove 114 being suspended from the notch of the first groove 114. at. Among them, the first electrode body 110 is a negative electrode, the second electrode body 120 is a positive electrode, and the edges of the first electrode body 110 and the second electrode body 120 are discharge electrodes of each other, thereby forming two positive polarity adsorption surfaces and The electric field on the negative polarity adsorption surface.

For example, when air or tail gas containing mist droplets and aerosols enters the electric field, small molecular gases are ionized, and electron exchange occurs in the electric field formed in the first right portion 116 and the middle of the bottom of the second groove 124, and the mist The droplets will be acted upon simultaneously by the centrifugal force formed by the rotation of the airflow and the gravitational force of the electric field, and tend to the inner surface of the second groove 124. Under the action of gravity, they will accumulate to form a downward flowing liquid, thereby achieving gas-liquid separation. The incompletely charged aerosol or escaping droplets will continue to enter the electric field formed by the second left portion 125 and the middle part of the bottom of the first groove 114 under the action of air flow pressure. The centrifugal force and electric field gravity formed by the rotation of the air flow will act simultaneously, tending to the third groove. The middle part of the bottom of a groove 114 further absorbs escaped aerosols and mist droplets, thereby improving filtration efficiency.

The direct current loaded between the first electrode body 110 and the second electrode body 120 should be less than 1kv/mm, especially for nearly arc-shaped electrodes. Since there is no dust collection angle, dust collection will affect the electrode spacing. In addition, the voltage is controlled between 0.5 and 0.8kv/mm, and the unit is forced to turn on over-discharge protection to ensure the reliability of the electric field under the flow of droplets.

In this embodiment, by adjusting the voltage of the first electrode body 110 and the second electrode body 120, the electric field droplet separation efficiency is controlled above 95%, and the flow rate of the droplet-containing gas entering the electric field is controlled at about 1.5m/s, which can be achieved Continuous and efficient gas-liquid separation and purification. The air purification filter element of this embodiment can be applied to the continuous adsorption and separation of gases containing liquid droplets such as oil smoke and oil mist, thereby cleaning oil mist and purifying oil smoke.

Embodiment 3

Please refer to Figures 3 and 5. This embodiment provides a third air purification filter element. Different from the electrode body with an I-shaped cross-section in Embodiment 1, in this embodiment, the first electrode body 110 and the The cross-sections of the second electrode bodies 120 are all in a Z-shape. In the current filter unit 100 , the edge portion of the first support piece 117 that is not used to form the first groove 114 is suspended inside the second groove 124 . In the current filter unit 100, the edge of the second support piece 127 that is not used to form the second groove 124 is suspended inside the first groove 114 of the adjacent filter unit 100. Among them, the first branch piece 117 that is not used to form the first groove 114 is connected to the first main piece 111 and extends in a direction away from the first groove 114; the second branch piece that is not used to form the second groove 124 The piece 127 is connected to the second main piece 121 and extends in a direction away from the second groove 124 . This embodiment has the same technical features as those in Embodiment 1, and their working principles and technical effects will not be described again here.

It can be understood that several levels of electric fields are formed between every two adjacent first electrode bodies 110 and second electrode bodies 120 , and the two adjacent filter units 100 are no longer independent of each other. Multi-level electric fields can also be formed between them, thereby improving filtration efficiency.

Referring to FIG. 5 , optionally, several filter units 100 are arranged in an annular manner to form an annular air purification filter element. External air enters from the inside of the annular filter element, passes through the filter unit 100 and is output outward.

Illustratively, the air purification filter element of this embodiment can be used not only for 99.9999% adsorption filtration of particles above 10 nanometers in the air, but also for the killing and inactivation of viruses in the air. Viruses and organic molecular groups adsorbed in the filter element are oxidized and decomposed by the excess ionized oxygen ions and hydrogen ions from the filter element, and are directly inactivated, thus achieving double insurance air management of adsorption capture and inactivation. In order to achieve the purification and degradation of organic molecules, the purification efficiency will be significantly improved by appropriately increasing the air humidity. The air purification filter element in this embodiment can directly replace the filter element of a home air purifier, including electret 200 filter element, activated carbon filter element, and photocatalytic filter element body. In addition, the electrode spacing within the core is set according to dust holding and efficiency requirements. Usually the spacing between indoor air purification electrodes is controlled at about 5.0mm, and the flow rate of the passing air is less than 0.5m/s. This embodiment can also adjust the inter-electrode voltage. During daily dust collection, the voltage is controlled at 0.6kv/mm, which can achieve air dust removal and purification with greater than 99% efficiency; when used to eliminate odors or organic volatile harmful gases, the voltage rises to 0.6~0.8kv/mm, and adjust the humidity to about 90%. In this way, oxidation ions generated by excessive ionization will degrade odor-producing gases and harmful organic volatile gases to achieve air cleanliness.

In order to achieve more efficient air management, such as virus filtration and inactivation, the voltage can be increased to 0.9~1.2kv/mm. When the humidity is adjusted to about 90%, the electric field will ionize a large amount of gas and put it into an efficient dust collection state. If the filter unit The 100 outlet is equipped with a composite electret 200. The superimposed electric field adsorption efficiency can reach a particle filtration effect of up to 99.99999%, achieving zero-level air cleanliness. Due to excessive ionization of small molecule gases, ozone and negative oxygen ions will escape from the terminal. Metal catalytic nets containing carbon, manganese, titanium, etc. can usually be used to reduce the escaped gas and eliminate ozone.

Embodiment 4

This embodiment provides an air purification device, including: an electrode support structure, a housing, a power supply, a fan, a controller, and any air purification filter element as described in the above embodiments. The power supply, the fan, and the controller are installed in the housing. The air purification filter element is provided on the electrode support structure and is installed on the housing through the electrode support structure. The power supply is electrically connected to the fan, the controller and the air purification filter element respectively; the controller is electrically connected to the fan and the air purification filter element respectively. In this embodiment, the power supply is used to supply power to the electrodes, the fan, and the controller. The controller is used to control the starting and closing of the fan and the rotation speed of the fan. It is also used to control the current and voltage of the electrode body in the air purification filter element.

In this embodiment, the housing can be provided with an air duct and a corresponding flow guide structure. The power supply is a high-voltage DC power supply and has functions such as overvoltage, overcurrent, and overpower protection. The electrode support structure is independently selected from one of plastics, ceramics, glass and other materials. In this embodiment, the voltage and power of the air purification filter element depend on the electrode area (1.0kw/m ² ) and the electrode spacing (1.0kv/mm). Using corresponding voltage adjustment circuits and control panels for voltage adjustment can make the air purification filter element and air purifier work in different functional states.

To sum up, in the air purification filter element and air purification device provided by the present invention, the first electrode body and the second electrode body are respectively provided with corresponding grooves, main pieces and support pieces, so that the first electrode body and the second electrode body Each other is a discharge electrode, and each time it passes through a first-level electric field, the adsorption efficiency will increase, thereby further improving the filtration capacity of the air purification filter element and air purification device. And, compared to Existing filtration and purification technology can achieve nano-zero filtration effect without setting up multi-layer filter elements. Therefore, it has the characteristics of low resistance, low noise and energy saving.

In addition, air purification filters and air purification devices can be used for the continuous adsorption and separation of gases containing droplets such as oil smoke and oil mist, thereby cleaning oil mist and purifying oil smoke, and can also be used to kill viruses in the air. inactivated.

The above are only embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in patent protection scope of the present invention.

Claims

An air purification filter element, characterized in that it includes: several filter units arranged in sequence, the filter units including first electrode bodies and second electrode bodies of different polarities;

The first electrode body includes a first main piece and at least two first branch pieces connected to the first main piece. At least two of the first branch pieces are arranged opposite to each other and are connected to the first main piece. Together they form the first groove;

The second electrode body includes a second main piece and at least two second branch pieces connected to the second main piece. At least two of the first branch pieces are arranged opposite and connected with the second main piece. Together they form a second groove;

Wherein, an edge of one of the first branches of the first electrode body is suspended inside or at the notch of the second groove, and/or one of the second electrode bodies is The edge of the second support piece is suspended inside the first groove or at the groove opening.
The air purification filter element according to claim 1, characterized in that the cross-sections of the first electrode body and the second electrode body are both I-shaped, and the first electrode body and the second electrode body are in the shape of an I-shape. They are arranged in a staggered arrangement in the vertical direction;

An edge of one of the first branches of the first electrode body is suspended inside the second groove;

An edge of one of the second support pieces of the second electrode body is suspended inside the first groove.
The air purification filter element according to claim 1, characterized in that the cross-sections of the first electrode body and the second electrode body are both C-shaped;

The first electrode body and the second electrode body are arranged in a staggered arrangement facing each other in the horizontal direction;

An edge of one of the first branches of the first electrode body is suspended at the notch of the second groove;

An edge of one of the second support pieces of the second electrode body is suspended at the notch of the first groove.
The air purification filter element according to claim 1, characterized in that the cross-sections of the first electrode body and the second electrode body are both Z-shaped;

In the current filter unit, the edge of the first support piece that is not used to form the first groove is suspended inside the second groove;

In the current filter unit, the edge portion of the second support piece that is not used to form the second groove is suspended inside the first groove of the adjacent filter unit.
The air purification filter element according to claim 1, characterized in that an electret is provided at the outlet of the filter unit, and the distance between the outlet of the filter unit and the inlet of the electret is 0 to 50 mm. .
The air purification filter element according to claim 5, wherein the electret is independently selected from one material selected from the group consisting of polytetrafluoroethylene, glass, and composite fiber non-woven cotton.
The air purification filter element according to claim 1, characterized in that, the two first branches used to form the first groove and the two first pieces suspended inside the first groove or at the notch. The distance between the second branches is equal;

The two second support pieces used to form the second groove and the said second support piece suspended inside or at the notch of the second groove The first slices are equally spaced.
The air purifying filter element according to claim 1, characterized in that several filter units are arranged in an annular shape to form an annular air purifying filter element.
The air purification filter element according to claim 1, wherein the first electrode body is made of stainless steel or aluminum alloy; and the second electrode body is made of stainless steel or aluminum alloy.
An air purification device, characterized in that it includes: an electrode support structure, a housing, a power supply, a fan, a controller, and an air purification filter element according to any one of claims 1 to 9;

The power supply, the fan, and the controller are installed in the housing, and the air purification filter element is provided on the electrode support structure and installed on the housing through the electrode support structure;

The power supply is electrically connected to the fan, the controller and the air purification filter element respectively; the controller is electrically connected to the fan and the air purification filter element respectively.