TWI732852B - Device and method for capturing condensation nuclei from ambient air - Google Patents

Abstract

The present invention relates to a device for capturing pathogens and/or virulent particles, and preferably also fine dust particles, from ambient air. The invention also relates to a method for capturing pathogens and/or virulent particles and preferably also fine dust particles from ambient air, in particular by making use of a device according to the invention.

Description

Device and method for capturing condensation nuclei from ambient air

The present invention relates to a device for capturing condensation nuclei from ambient air. The condensation nucleus particularly refers to pathogens and/or toxic particles, and preferably also fine dust particles. The present invention also relates to a method for capturing condensation nuclei from ambient air, especially by using the device according to the invention. The condensation nucleus refers to pathogens and/or toxic particles, and preferably also fine dust particles.

Fine dust particles composed of a plurality of floating particles, usually these particles are smaller than 10 micrometers (micrometers), and in the ambient air, this poses a health hazard. Plural fine dust particles can already cause symptoms in places with relatively low concentrations. The smaller the particles, the deeper the particles will penetrate into the respiratory tract. The damage to health itself includes premature death, increased chances of emergency hospitalization due to heart and respiratory diseases, and respiratory diseases and dysfunction. Large dust particles are less harmful because they usually do not pass through the upper respiratory tract. Transportation (40%), industry (23%) and agriculture (20%) are the main sources of fine dust particles. For example, fine dust generated by the combustion process of automobiles (especially diesel engines), power stations, industrial and private burner installations. However, this may also be the result of the storage and transfer of coal, ore, and grain, as well as the wear and tear on car tires and roads. A variety of conventional devices can be used to purify at least a part of the ambient air including the above-mentioned particles. An effective method known here is to ionize the ambient air through high voltage and corona discharge, so that an electron wind (ion wind) can be generated between the ionization positive electrode and the nearby negative electrode, and part of the fine dust in the ambient air can be borrowed It is removed by the negative electrode. In addition to the above In addition to fine dust particles, the ambient air will also carry pathogenic particles (biological pathogens) and toxic particles (non-biological pathogens), including viruses, bacteria, fungi and other types of spores. These pathogens and toxic particles are usually very small under the microscope and cannot be detected by the naked eye. Pathogens and toxic particles carried in the ambient air are directly breathed in, which usually causes the immune system to be constantly on alert, which can cause serious health consequences. Especially when pathogens and toxic particles are high in somatic cells, as in children's conditions, this is confirmed by a recent report by the World Health Organization. Toxic particles are, for example, toxic artificial nuclei or kerns, as described in section 3.2 of the book "The Forgotten Pollution, ISBN 0792339177 Kluwer Academic Press 1996" by Rein A. Roos. Since fine dust particles and pathogens and/or toxic particles will interact with the water condensed on the aerosol in the humid cold air, resulting in the formation of clouds, fog or mist, such particles are in the context of the present invention Collectively referred to as the condensation core.

An object of the present invention is to provide an improved device and method for capturing condensation nuclei, especially pathogens and/or toxic particles in ambient air.

For this purpose, the present invention provides a device for capturing condensation nuclei from ambient air, especially pathogens and/or toxic particles. The device includes: at least one high voltage source and at least one main positive electrode, at least one main positive electrode system Connected to at least one high voltage source and configured to ionize ambient air by corona discharge; at least one negative electrode, at least one negative electrode is substantially plate-shaped, and at least one negative electrode is located a distance from the main positive electrode Position so that when the device is in use, an electronic wind is formed between the main positive electrode and the negative electrode. The device includes a substantially plate-shaped at least one positive electrode, and at least one positive electrode is positioned opposite to Downstream of at least one main positive electrode, and preferably at least once at least a part of the positive electrode is located relative to at least one negative electrode Upstream, at least once, the positive electrode system is configured to confine the negatively charged condensation nucleus, which particularly refers to pathogens and/or toxic particles in the ambient air. Research has shown that condensation nuclei, such as pathogens and toxic particles, are usually negatively charged, so that these particles are repelled by the same negatively charged ground and actually accumulate in the ambient air. According to the present invention, by using a secondary positive electrode that is generally substantially plate-shaped, these negative pathogens and toxic particles will be captured in the device, and the negatively charged pathogens and/or toxic particles can be attached to more than one secondary positive electrode. On the electrode. The at least one positive electrode is not directly connected to a high voltage source, so the potential of the at least one positive electrode is generally lower than the potential of the at least one main positive electrode, or significantly lower. At least one secondary positive electrode that is not connected to a high voltage source is configured to be positively charged through interaction with positively charged particles from the electron wind, thereby negatively charged condensation nuclei in the ambient air, especially pathogens And/or toxic particles will be bound by at least one secondary positive electrode. At least one secondary positive electrode that is not connected to a high voltage source will usually be completely neutral initially, and will only be charged by positive electrode particles that collide with the secondary positive electrode, and thus be positively charged. The at least one secondary positive electrode that is not connected to the high voltage source is also called a passive electrode, and other electrodes connected to the high voltage source, including at least one primary positive electrode and at least one negative electrode, are considered effective electrodes. As mentioned above, the at least one positive (low voltage) electrode plays a particularly important part in capturing the negatively charged condensation nuclei, which specifically refers to pathogens and/or toxic particles in the ambient air. By giving the positive electrode substantially in the form of a plate at least once, and preferably in the form of a substantially closed plate, more preferably a substantially flat closed plate, the catching contact surface of the positive electrode is required at least once It can be configured to capture enough or even all of the negatively charged condensation nuclei guided by the device of the present invention so as to remove them from the ambient air. The main positive electrode is specially configured to be generated in an electric field, with the result that a corona discharge is generated, and a cloud of charged particles attracted by the negative electrode causes an electron wind. During corona discharge, it has disinfection effect on pathogens and toxic particles in ambient air. The ultraviolet radiation used will be emitted on the main positive electrode. In the device according to the present invention, pathogens and toxic particles are rendered harmless by sterilization on the one hand, and captured by the secondary positive electrode on the other hand. The negative electrode has the function of generating electron wind and binding positively charged particles from ambient air. These positively charged particles can be positively charged naturally or by the main positive electrode (further). In particular, fine dust will be captured by the negative electrode. Therefore, the device of the present invention includes at least one ionization-positive high-voltage power supply, at least one positive electrode for capturing negative particles, which specifically refer to pathogens and/or toxic particles, and at least one negative electrode for capturing positive particles. Particles especially refer to fine dust. Since the present invention does not and does not need to be provided with a warming device, nor does it need to be provided with a filter that causes pressure loss, the device can be operated in a relatively energy-saving manner. On the other hand, the device of the present invention can be used as an electrostatic precipitator, for example, used outdoors or indoors in hospitals and schools. A plate-shaped electrode is understood as an electrode having a relatively large (plate-shaped) capturing surface. The capturing surface can be flat and/or curved, and can also take a closed and/or partially opened form. The geometric shape of the plate-shaped electrode is not limited to the actual two-dimensional plate-shaped geometric shape, and may also have a more three-dimensional geometric structure. The plurality of electrodes are at least partially made of one or more conductive materials, and the conductive material is preferably a metal. The space for generating electronic wind formed between at least a part of at least one main positive electrode and at least one part of at least one negative electrode usually does not contain intermediate components, such as filters (filter cloth), dielectric layers Or other (increased resistance) components. Due to the free intermediate space, where the main positive electrode and the negative electrode are located in each other’s line of sight, the electron wind can be basically unobstructed, and the electron wind is basically unobstructed from the main positive electrode to the negative electrode. Mobile, which significantly improves the efficiency of the device. It is for this reason that it is strongly recommended to position at least one secondary positive electrode, preferably all secondary positive electrodes, outside the center of the electron wind, that is, off-center. In the case of applying a plurality of secondary positive electrodes, at least two secondary positive electrodes are preferably Around the center of the electronic wind. The above-mentioned plurality of secondary positive electrodes are preferably positioned on both sides (opposite sides) lateral to the center of the electronic wind (to be generated). Each secondary positive electrode will usually intercept and possibly guide a small portion of the electronic wind here, although as mentioned above, the center of the electronic wind will preferably be free of objects (increasing resistance). The device of the present invention is preferably configured to allow the displacement of the electronic wind only under the influence of at least one electric field formed between the at least one main positive electrode and the at least one negative electrode. It should be understood that this means that the present invention does not use a means to generate air flow mechanically or alternatively, such as a fan. It is particularly advantageous that the device of the present invention functions completely and solely based on the generation of electronic wind, and can be given a relatively simple, inexpensive and durable device form in structure. Furthermore, the use of a fan usually results in undesirably high wind speeds, thereby generating more turbulence in the generated airflow, and more closely colliding with different electrodes, which may usually have a particularly adverse effect on the efficiency of particle capture. . For this reason, it is also undesirable to use a device that mechanically generates airflow.

The at least one negative electrode is preferably implemented as a (substantially) completely closed plate. A closed plate has the advantage that the negative electrode is impermeable to the electronic wind, so the particles carried by the electronic wind are forced to collide with the negative electrode, which significantly improves the efficiency of the device to capture (fine dust) particles. The electron wind here usually collides with the (closed) front of the negative electrode, and then the wind is forced to flow substantially parallel to the front of the negative electrode, or parallel to at least one (imaginary) plane defined by the front of the negative electrode. , Thereby increasing the contact time between the electron wind with trapped particles and the negative electrode, so as to further improve the efficiency of the negative electrode. The at least one negative electrode is preferably embodied here as a substantially completely closed and substantially flat plate. Plates are generally effective enough to be used and have the significant advantage of being relatively easy to clean (compared to a folded, angled, or other shaped plate).

Another advantage of the device according to the present invention is that in the process of capturing condensation nuclei from the ambient air, the odor-determining particles (condensation nuclei) can and usually will be captured by the device, so by Using the device of the present invention, the odor in the ambient air can be affected, especially neutralized. The odor-determining condensation nucleus is usually formed by relatively long and/or complex organic molecules, and organic molecules are usually effectively decomposed by showing a typical 50-75 keV in a corona discharge near the main positive electrode. The efficiency of this odor neutralization process is greatly increased due to the movement and preferably the circulation of the gas flow, whereby the form of an effective reactor vessel (neutralization vessel) is actually required as a whole.

The at least one secondary positive electrode of the present invention is preferably configured to be positively charged by interaction with positively charged particles from the electron wind. The secondary positive electrode does not need to be connected to a separate voltage source here, and the secondary positive electrode has passive characteristics, so that the secondary positive electrode is exposed to a plurality of positive particles in the ionized ambient air that is in contact with the secondary positive electrode during use. Charged. The passive secondary positive electrode is usually connected to the negative electrode in an electrically insulated manner, and preferably is connected to the primary positive electrode in an electrically insulated manner.

The secondary positive electrode is preferably positioned relative to the negative electrode so that a (second) electric field will be formed between the primary positive electrode and the negative electrode during use. This allows the size of the entire electric field to be increased and/or to give the electric field a more targeted form, thereby increasing the capture capability of the device.

The ionization of the main positive electrode and the ambient air around it is a direct result of the corona discharge generated by the use of a high-voltage source. The electric field intensity generated by the high-voltage source is very strong, and its electric field intensity reaches the air breakdown field intensity (3MV/m for dry air). At this electric field strength, a discharge will occur in the air around the main positive electrode, which is also called corona discharge, thereby generating a non-tropical positively charged plasma ("positive corona"). These desired discharges mainly occur in the case of irregular, sharp and/or narrow surfaces. Therefore, it is advantageous for the main positive electrode to include at least one conductive wire, at least one conductive pin or tip or other type of tape or a combination thereof (a wire with a plurality of pins). The positive generated in the corona The ions follow the electric field lines of the emitter electrode (mainly positive electrode) to the collector plate of the negative electrode. The free radicals formed during corona discharge, especially oxygen free radicals, are neutral in charge and entrained by the electron wind. Due to the high reactivity, these groups usually react quickly with condensation nuclei in the electronic wind, such as pathogens or toxic particles and/or fine dust. In the case of free radicals forming oxygen free radicals, multiple particles are oxidized here, especially when pathogens are in an inactive state, thereby rendering them harmless. Before the entire charge is sufficient to repel other ions, small (fine dust) particles (<1μm) can absorb dozens of ions, so large (fine dust) particles (>10μm) can absorb hundreds of thousands. Therefore, the electrostatic force on large particles is much stronger. The plurality of charged particles are driven to the collector plate of the negative electrode by electric charge. The unstable gas flow in the charged gas tends to uniformly mix the plural particles with the gas. Therefore, the collection process is a balance between electrostatic force and dispersion force. The plurality of positively charged particles finally reach the position of the collector plate close to the negative electrode close enough to greatly reduce the unstable airflow, so as to collect the plurality of particles.

The high voltage source (electric modulator) is configured to generate a potential difference of at least 10 kV, preferably at least 20 kV, and more preferably about 30 kV between the main positive electrode and the negative electrode. The high voltage source preferably forms a direct current source. The current will generally be very low and in the order of microamperes, so the total power of the high voltage source will remain limited to a safe order of milliwatts.

The negative electrode is called the negative electrode because it will have a lower potential than the (plural) primary and secondary positive electrodes. Therefore, in this case, the term "negative" should be regarded as relative. It is conceivable that the absolute potential of the negative electrode is charge neutral, for example, the negative electrode is given a grounded form. However, for the purpose of charging the negative electrode with a (opposite) negative potential, it is also conceivable to connect a high voltage source to the negative electrode.

In order to increase the device’s ability to capture negatively charged condensation nuclei, which particularly refer to pathogens and toxic particles, it is advantageous that at least one secondary positive electrode is positioned relative to the primary positive electrode. The pole electrode is downstream and is positioned upstream relative to the negative electrode such that the at least one secondary positive electrode is configured to direct the electron wind from the main positive electrode to the negative electrode. Arrange the secondary positive electrode in the airflow as a guide (wind screen) to ensure dense contact with the (unstable airflow) electronic wind, which usually helps to capture the ability to condense nuclei, especially pathogens and toxicity Particles.

It is conceivable and usually even advantageous that the device includes a plurality of secondary positive electrodes, whereby the capture power (capture capacity) of the device can be further improved. It is particularly advantageous here that the secondary positive electrode is located downstream with respect to the main positive electrode and upstream with respect to the negative electrode, so that the plurality of secondary positive electrodes during the use of the device are configured such that they are polygonally defined and combined. Guide the electron wind to flow from the main positive electrode to the negative electrode.

The side of the main positive electrode away from the negative electrode is preferably uncovered (unprotected), so that unobstructed inhalation of ambient air can generally occur, which enhances the required (continuous) electronic wind produce.

At least a part of the main positive electrode and the negative electrode preferably extend substantially in parallel. Due to this parallel direction, an electric field with a relatively uniform electric field strength can be generated, thereby having a relatively constant electron wind velocity between the positive electrode and the negative electrode. This generally increases the controllability of the device. However, it is also conceivable to allow the electric field intensity to vary between the positive electrode and the negative electrode, thereby (intentionally) generating more unstable airflow.

The present invention also relates to a method for capturing condensation nuclei, especially pathogens and/or toxic particles from ambient air, especially by using the device according to any one of the patent applications of the present invention, which includes the following steps : A) Use a high voltage source to apply an electric field between the main positive electrode and the negative electrode, so that the ambient air existing around the main positive electrode is at least partially ionized, and an electron wind will be generated from the main positive electrode to the negative electrode; B) By forming part of the positive charge of the electronic wind Charged ions, positively charge at least one secondary positive electrode located downstream with respect to the primary positive electrode; and C) the negatively charged condensation nucleus entrained by the electron wind is restrained by the charged secondary positive electrode, and the condensation The nucleus is especially a pathogen and/or toxic particle.

The electronic wind also entrains fine dust particles in the air. Large fine dust particles (generally 1 micron in diameter) will establish a relatively high velocity in the electronic wind and collide with the negative electrode relatively quickly, thus (also) can be captured from the airflow. The fine dust particles are hardly affected by the generated wind, but are easily affected by the Brownian motion, and are captured from the air by diffusion and interception with the negative electrode. The fine dust particles that are more difficult to capture from the air are medium-sized particles, and the capture (collision and diffusion) of these two forms of medium-sized particles is relatively difficult to detect. Medium-sized fine dust particles (generally between 0.02 and 1.0 microns in diameter) usually have a high surface area to volume ratio. As a result, these particles are positively charged by the electron wind. Another result is that the medium-sized particles repel each other and move toward the edge of the electron wind, where they can be as far apart as possible from each other, and the mutual repulsion force is small. Usually these medium-sized positively charged particles collide with at least one secondary positive electrode and provide effective positive charging of that electrode.

The different preferred embodiments of the present invention are listed in the following content:

1. A device for capturing condensation nuclei from ambient air, especially pathogens and/or toxic particles, including at least one high voltage source; at least one main positive electrode, and at least one main positive electrode is connected to the high voltage source, and It is configured to ionize ambient air; at least one negative electrode, at least one negative electrode is substantially plate-shaped, and at least one negative electrode is located at a distance from the main positive electrode, so that the device is in use at the main positive electrode An electronic wind is formed between the negative electrode and the negative electrode; wherein the device includes a substantially plate-shaped at least one positive electrode, the at least one positive electrode is located downstream with respect to the main positive electrode, and preferably the positive electrode is at least once At least a part of it is located opposite to the negative electrode At least once, the positive electrode system must be configured to trap negatively charged condensation nuclei from ambient air, and the condensation nuclei are especially pathogens and/or toxic particles. 2. The device according to item 1, wherein the positive electrode system is configured to be positively charged by interacting with a plurality of positively charged particles from the electron wind at least once. 3. The device according to item 1 or 2, wherein the secondary positive electrode is connected to the negative electrode in an electrically insulating manner. 4. The device according to any one of items 1 to 3, wherein the secondary positive electrode is positioned relative to the negative electrode, so that when the device is in use, the secondary positive electrode and the negative electrode An electric field is formed between. 5. The device according to any one of items 1 to 4, wherein the main positive electrode is configured to generate at least one discharge. 6. The device according to any one of items 1 to 5, wherein the main positive electrode includes at least one conductive wire.

7. The device according to any one of items 1 to 6, wherein the main positive electrode includes at least one conductive pin. 8. The device according to any one of items 1 to 7, wherein the high voltage source is configured to generate a potential difference between the main positive electrode and the negative electrode, the potential difference being at least 10kV, preferably 20kV, And more preferably about 30kV. 9. The device according to any one of items 1 to 8, wherein the high voltage source forms a DC power source. 10. The device according to any one of items 1 to 9, wherein the high voltage source is also connected to the negative electrode for the purpose of charging the negative electrode at a negative potential. 11. The device according to any one of items 1 to 10, wherein the negative electrode is grounded. 12. The device according to any one of items 1 to 11, wherein the positive electrode is located downstream of the main positive electrode and upstream of the negative electrode at least once, so that the positive electrode is required at least once. It is configured to guide the electron wind from the main positive electrode to the negative electrode. 13. The device according to any one of items 1 to 12, wherein the device includes a plurality of secondary positive electrodes. 14. The device according to item 13, wherein the plurality of secondary positive electrodes are located downstream with respect to the main positive electrode and upstream with respect to the negative electrode, so that during the use of the device, the plurality of secondary positive electrodes are arranged For the multilateral limit and guide the electronic wind from the main positive The polar electrode flows to the negative electrode. 15. The device according to any one of items 1 to 14, wherein at least a part of the main positive electrode and the negative electrode extend substantially in parallel. 16. A method for capturing condensation nuclei from ambient air using the device described in the present invention, wherein the condensation nuclei especially refers to pathogens and/or toxic particles. The method includes the following steps: Step A: Using a high voltage source to An electric field is applied between a main positive electrode and a negative electrode, so that at least a part of the ambient air around the main positive electrode is ionized, and an electron wind is generated from the main positive electrode to the negative electrode; Step B: by forming The positively charged ions of a part of the electron wind require the positive electrode to be positively charged at least once, and the positive electrode must be positioned downstream with respect to the main positive electrode at least once; and Step C: the secondary positive electrode is bound by the charged secondary positive electrode The negatively charged condensation nuclei entrained by the electronic wind, and the condensation nuclei are especially pathogens and/or toxic particles.

1: Point electrode

2: High voltage source

3: Flat metal plate / negative metal plate

4: Large dust particles

5: Fine dust particles

6: Medium-sized particles

7: Additional board/positive additional board

10: Column

11: The first electrode

12: second electrode

13: Generator

14: Electrical charging panel

A: Electronic wind

B: entrainment

C: Brownian motion

D: Electric field

The present invention will be elucidated based on non-limiting exemplary embodiments shown in the following drawings. Here: FIG. 1 is a schematic diagram illustrating the capture of large and small fine dust particles in the device according to the present invention; FIG. 2 is a schematic diagram illustrating the capture of medium-sized fine dust particles in the device according to the present invention; and FIG. 3 is The description provides a schematic diagram of a column of a device according to the present invention.

Figure 1 schematically shows the capture of large and small fine dust particles in the device according to the invention. Fig. 1 shows the main positive electrode connected to the positive side of the high voltage source 2 (for example, the dot electrode 1) and the negative electrode connected to the negative side of the high voltage source 2 (for example, the flat metal plate 3) for this purpose. ). By ionizing particles in the air, an electronic wind A is generated in the space between at least a part of the point electrode 1 and at least a part of the flat metal plate 3. The large dust particles 4 are entrained by the electronic wind A and B and are combined with the plane gold The belonging plate 3 collides, thereby catching the particles at the flat metal plate 3. Due to the small mass, the fine dust particles 5 are relatively unaffected by the electronic wind A. However, the fine dust particles 5 are susceptible to the Brownian motion C, and contact the flat metal plate 3 by self diffusion, and the fine dust particles 5 will also be captured at the flat metal plate 3.

Figure 2 schematically shows the capture of fine dust particles of medium size in the device according to the invention. FIG. 2 shows the dot electrode 1 connected to the positive side of the high voltage source 2 and the flat metal plate 3 connected to the negative side of the high voltage source 2 for this purpose. By ionizing particles in the air, an electronic wind A is generated. The medium-sized particles 6 are slightly positively charged by the electron wind A, and then the medium-sized particles 6 that are also positively charged and the dot electrode 1 repel each other.

These slightly positively charged medium-sized particles 6 are captured by the secondary positive electrode (for example, additional plate 7) (initially neutral) shown on the left side of FIG. 2. The additional plate 7 is slowly positively charged, and then will no longer capture the positively charged medium-sized particles 6, but repel them.

Then, the medium-sized particles 6 repelled by the additional plate 7 enter the electric field D extending between the positive additional plate 7 and the negative metal plate 3. At the electric field D, the medium-sized particles 6 of the positive electrode will be forced to face the direction of the negative metal plate 3. And was captured. The positively charged additional plate 7 also attracts basically negatively charged pathogens and toxic particles from the air.

Fig. 3 schematically shows a column 10 provided with a device according to the present invention, including three first electrodes 11, three second electrodes 12, and a generator 13 for charging the first electrode 11, Therefore, an electric field is formed between the first electrode 11, the second electrode 12 and the six electrical charging panels 14.

It is obvious that the present invention is not limited to the exemplary embodiments shown and described here, but within the scope of the attached patent application, many aspects are possible, which is self-evident to those skilled in the art. . It is conceivable here that, without departing from the scope of the appended patent application, the structure of the invention In the case of thinking, the different inventive concepts and/or technical measures of the variants of the above-mentioned embodiments may be completely or partially combined.

The word "including" used in this article should be understood not only to mean "including", but also to mean the phrases "containing", "essentially composed of", "formed of" Wait.

1‧‧‧Point electrode

2‧‧‧High voltage source

3‧‧‧Flat metal plate/negative metal plate

4‧‧‧Large dust particles

5‧‧‧Fine dust particles

7‧‧‧Additional board/Positive additional board

A‧‧‧Electronic Wind

B‧‧‧Entrainment

C‧‧‧Brown Motion

Claims (23)

A device for capturing condensation nuclei from ambient air includes: at least one high-voltage source; at least one main positive electrode. The at least one main positive electrode is connected to the at least one high-voltage source and is configured to be electrically connected to the Corona discharge to ionize the ambient air; and at least one negative electrode, the at least one negative electrode is plate-shaped, and the at least one negative electrode is located at a distance from the main positive electrode, so that when the device is in use, An electron wind is formed between the main positive electrode and the negative electrode, wherein the device includes a plate-shaped at least one primary positive electrode, the at least one primary positive electrode is located downstream with respect to the primary positive electrode, and the At least a part of the at least once positive electrode is located upstream with respect to the negative electrode, wherein the at least once positive electrode is configured to be positively charged by interacting with a plurality of positively charged particles from the electron wind, Therefore, the negatively charged condensation nucleus from the electronic wind is bound by the at least one-time positive electrode, and the condensation nucleus refers to pathogens and/or toxic particles. The device according to claim 1, wherein a space for generating the electronic wind is formed between at least a part of the at least one main positive electrode and at least a part of the at least one negative electrode, and the space is not as a Filter or a dielectric intermediate component. The device described in item 1 or item 2 of the scope of the patent application, wherein the device is configured to allow the at least one electric field formed between the at least one main positive electrode and the at least one negative electrode to allow the The displacement of the electronic wind. Such as the device described in item 1 or item 2 of the scope of the patent application, wherein the device does not include a means for mechanically generating airflow. The device described in item 1 or item 2 of the scope of patent application, wherein the at least one negative electrode is implemented as a completely enclosed plate. The device described in item 1 or item 2 of the scope of the patent application, wherein the at least one negative electrode is implemented as a completely enclosed and flat plate. Such as the device described in item 1 or item 2 of the scope of patent application, wherein the at least one negative electrode is impermeable to the electronic wind. The device described in item 1 or item 2 of the scope of patent application, wherein the at least one positive electrode configured to be positively charged by interacting with the positively charged particles from the electron wind is initially It is neutral and is charged only by interacting with these positively charged particles. Such as the device described in item 1 or item 2 of the scope of the patent application, wherein the secondary positive electrode is connected to the negative electrode in an electrically insulating manner. For example, the device described in item 1 or item 2 of the scope of the patent application, wherein the secondary positive electrode is located at a position relative to the negative electrode, so it will be placed between the secondary positive electrode and the negative electrode during use. This electronic wind is generated from time to time. The device described in item 1 or item 2 of the scope of patent application, wherein the main positive electrode is configured to generate at least one discharge. The device described in item 1 or item 2 of the scope of patent application, wherein the main positive electrode includes at least one conductive wire. Such as the device described in item 1 or item 2 of the scope of the patent application, wherein the main positive electrode includes at least one conductive pin. Such as the device described in item 1 or item 2 of the scope of patent application, wherein the high voltage source is configured to generate a potential difference between the main positive electrode and the negative electrode, the potential difference being at least 10kV, or 20kV , And or about 30kV. Such as the device described in item 1 or item 2 of the scope of patent application, wherein the high voltage source forms a DC power source. For the device described in item 1 or item 2 of the scope of patent application, the high voltage source is also connected to the negative electrode for the purpose of charging the at least one negative electrode with a negative potential. Such as the device described in item 1 or item 2 of the scope of patent application, wherein the at least one negative electrode is grounded. For example, the device described in item 1 or item 2 of the scope of the patent application, wherein the at least once required positive electrode is located downstream relative to the main positive electrode and upstream relative to the negative electrode, so that the at least once required The positive electrode is configured to guide the electron wind from the main positive electrode to the negative electrode. Such as the device described in item 1 or item 2 of the scope of patent application, wherein the device includes a plurality of the secondary positive electrodes. For example, the device described in item 19 of the scope of patent application, wherein the secondary positive electrodes are located downstream with respect to the main positive electrode and upstream with respect to the negative electrode, thereby, during the use of the device , The secondary positive electrodes are configured to limit and guide the electron wind to flow from the primary positive electrode to the negative electrode. The device according to item 1 or item 2 of the scope of patent application, wherein the at least one primary positive electrode is located outside the center of the electron wind generated between the at least one main positive electrode and the at least one negative electrode. According to the device described in claim 1, wherein at least a part of the main positive electrode and the negative electrode extend in parallel. A method for capturing condensation nuclei from ambient air by using the device described in any one of items 1 to 22 of the scope of the patent application includes the following steps: Step A: A main positive electrode is provided by a high voltage source And an electric field is applied between a negative electrode, so that at least a part of the ambient air around the main positive electrode is ionized, and an electronic wind is generated from the main positive electrode to the negative electrode; Step B: by forming the electronic wind A portion of the positively charged ions are positively charged at least once with the positive electrode, and the at least one positive electrode is located downstream with respect to the main positive electrode; and step C: the at least one positive electrode is bound by the charged positive electrode The negatively charged condensation nucleus entrained by the electronic wind, and the condensation nucleus refers to pathogens and/or toxic particles.

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