WO2017114049A1 - 气体介质悬浮颗粒物净化系统 - Google Patents

气体介质悬浮颗粒物净化系统 Download PDF


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WO2017114049A1 PCT/CN2016/107367 CN2016107367W WO2017114049A1 WO 2017114049 A1 WO2017114049 A1 WO 2017114049A1 CN 2016107367 W CN2016107367 W CN 2016107367W WO 2017114049 A1 WO2017114049 A1 WO 2017114049A1
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particulate matter
purification system
suspended particulate
gas medium
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English (en)
French (fr)
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Priority claimed from CN201511014137.3A external-priority patent/CN105642056A/zh
Priority claimed from CN201521123117.5U external-priority patent/CN205649998U/zh
Application filed by 靳瑞廷 filed Critical 靳瑞廷
Publication of WO2017114049A1 publication Critical patent/WO2017114049A1/zh




    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours


  • the utility model belongs to the technical field of purification and filtration, and relates to a gas medium suspended particulate matter purification system.
  • HEPA is the most common purification treatment on the market (HEPA is the abbreviation for High Efficiency Particulate Air Filter). HEPA uses pure mechanical filtration, which is different from ion and electronic purification equipment.
  • the general HEPA filter is easy to capture large particles such as pollen, bacteria, dust, etc. due to technical processes, but for particles having a particle diameter of less than 2.5 microns, the smaller the particle size, the more difficult it is to capture.
  • Such equipment generally has a large wind resistance and requires a high-powered device that provides aerodynamics, thus consuming more power and making greater noise. Noise and energy consumption are the main shortcomings of the HEPA filtration system.
  • Another common type of filtration equipment belongs to the category of electrostatic, electronic, and ion purification. These devices are generally based on the principle of electrostatic precipitators in the industrial field. They usually use "parallel plate electric field" to capture charged particles (such as CN 101130180B, WO 2012016481A1, CN101406798, etc.). The purpose of industrial dust removal is to prevent industrial production equipment from going to the atmosphere. Emissions, without considering the need for high air quality requirements such as indoor living spaces, clean rooms, etc. (Tan Tianyou et al., 1984). In addition to the common parallel planar plate system, some other systems have made some transformations in parallel planes.
  • CN1980744B transforms the basic plate-type trapping electric field into a porous square form, but arranges dust collection with different potential differences in a dense mesh.
  • the electrode is cumbersome; if the method of adding the hidden electrode in the hole structure of the slotted plastic plate increases the manufacturing cost and reduces the capture area; if the implementation of the pure metal plate hole structure is difficult, it is more difficult than the conventional structure. There is substantial efficiency improvement.
  • CN101374605B is a combination of a filter cartridge and a filter cartridge after the plate-type capture electric field is used because the effect of the electric field capturing particles is unsatisfactory. Increasing the level of a filter theoretically increases the purification efficiency of the purifier.
  • Whitby (1978) summarized the modalities of three particle size distributions according to the surface area and particle size distribution of airborne particulate matter, namely the Aigen core model (particle size less than 0.1 ⁇ m) and the accumulation mode (particle size greater than 0.1 ⁇ m is less than 2 ⁇ m) and coarse-grained mold (particle size greater than 2 ⁇ m).
  • the distribution of particulate matter in urban atmosphere is mostly accumulation mode and coarse grain mode. Among them, the accumulation of nuclear membrane particles is not easy to remove, most of them are secondary particles, and most sulfate particles belong to this mode (Hu Min et al., 2005).
  • the degree of toxicity of suspended particles in the above gaseous medium to human body is composed of several factors: the toxicity of suspended particulate components, the number of suspended particles, and the particle size of suspended particles (since smaller particles can enter human blood directly from the lungs, Therefore, the toxicity of this part of the particles is particularly large), the health of the respiratory tract (the ability of the human body to clean the respiratory tract), the characteristics of the particles (especially ultrafine particles, bacteria, viruses, heavy metals, etc.).
  • Electret fiber is a fiber that can be permanently charged. Due to its electrostatic force, the relatively ordinary filter can improve the dust collection rate and gas filtration efficiency.
  • electrets have also been used in the field of civil purification as a purification adsorbent (for example, CN102164677B).
  • the voltage of electret fibers is usually only a few hundred to several thousand volts (Yang Jingquan et al., 2009). Since the electric field strength is low and the voltage value cannot be adjusted, there is a bottleneck in the capture efficiency. Such materials cannot be regenerated after use and are not easily degraded. The life cycle cost and environmental protection cost of the products are high, which is not conducive to market popularization.
  • auxiliary technologies such as activated carbon filtration devices, which are often used as an auxiliary device for air purification equipment.
  • the activated carbon device can adsorb certain bacteria, dust and harmful gases in a short time, and has a general adsorption capacity for inorganic substances. After the activated carbon material is saturated, it is difficult to recycle. (Yin Weidong, 2002) After the adsorption reaches a certain level, because there is no bactericidal effect, it is easy to become a proliferation of bacteria, and the replaced filter element is also faced with the difficulty of harmless treatment.
  • graphene-based adsorbent materials such as CN103407997A
  • they cannot be regenerated. If the air media with serious pollution is treated, the failure is faster.
  • Some of the existing patent documents are devices that mainly use ozone to sterilize air (for example: CN103673124A, CN201996881U, CN86106909, etc.), and ozone has an adverse effect due to irritating the human respiratory system.
  • China's national standard "GBT18883-2002 indoor air quality standards” clearly limits the indoor ozone concentration of the upper limit of 50ppb, so such active ozone generating equipment generally can not meet the standard, so it is not suitable for indoor work and residence. Waiting for the environment.
  • ions such as CN102946910B, CN105115054A, CN105042717A, etc., which output ions as output.
  • the most important thing is that the entry of ions itself does not directly eliminate the pollution in the gas.
  • ions are generally produced along with ozone (for example, CN85102037 incorporates a device for eliminating associated ozone), and negative ions released into the air may also be negatively charged particles (not equivalent to negative ions detected in fresh air). Therefore, it is not appropriate to install the device that generates ions in an area where human activity is active. This drawback makes the scope of use of such purification devices very limited.
  • the unfavorable factor for releasing ions into the indoor space is that after these ions or charged particles enter the air, the nearby surface will be the capture body of these particles (for example, the wall surface), which will accumulate more particles. Dirty, not easy to clean.
  • Small suspended particles particle size ⁇ 2.5 ⁇ m that are difficult to remove and kill bacteria and viruses therein, and such systems produce little or no ozone or ions that may be harmful to human health.
  • a gas medium suspended particulate matter purification system comprising a charging assembly (0101), a forced air assembly (0102), a filter assembly (0103), and a conduit through which the gas can pass, It is characterized in that the filter assembly (0103) comprises at least two electrodes, a potential difference exists between the electrodes, and a fibrous material is interposed between the electrodes.
  • the fiber material is preferably a structure that is not closely arranged, and there is a space between the fibers for the airflow to pass. Under the action of the high voltage electrode, the fiber is charged and an electric field is generated in the space between the spaces, and the filling ratio of the fiber in the fiber-containing filter component is 1-15%.
  • the diameter of the fibers ranges from 100 ⁇ m to 0.01 ⁇ m. The beneficial effect is that it provides a larger specific surface area than the conventional plate dust collector, and effectively captures larger suspended particles (particle size ⁇ 2.5 ⁇ m) in the air while effectively capturing larger particle contaminants.
  • the fibrous material preferably degrades the acid fiber.
  • the beneficial effect is that it can be manufactured at a reasonable cost, is degradable, and is environmentally friendly.
  • Acidic fiber materials can have excellent functions of inhibiting bacterial growth.
  • Another benefit of such a structure is that the power and noise of the device can be greatly reduced due to the low air resistance.
  • the fiber material can be selected from high molecular polymer fibers.
  • the beneficial effects are also high specific surface area and fine particle removal effect, and low air resistance.
  • the fibrous material is a layered structure in which the fibrous structures have a space for airflow therethrough.
  • the beneficial effect of such a structure is also due to the low air resistance, which can greatly reduce equipment power and noise.
  • the high voltage electrode is not subjected to insulation treatment, and the gas can pass through the electrode; the beneficial effect is that the effect of the insulation material on the electric field strength can be avoided.
  • the tip end portion of the plasma generating pole of the charged component is a brush tip of a carbon fiber combination.
  • the polarity of the electrode (0202) on the side of the filter element (0103) adjacent to the charging component (0101) is the same as the polarity of the medium ion generating electrode (0602) of the charging component (0101), and the other side is The electrode (0201) is grounded.
  • the beneficial effect is that all the ions are neutralized and not released into the space before the purified gas medium leaves the system, which can avoid the threat of ions to human health and avoid the residual charged particles. Secondary pollution caused by the environment.
  • Another object of the present invention is to provide a particle charging device that is a necessary part of the above described high efficiency purification and filtration system.
  • the polarity of the electrode of the plasma generating pole (0602) in the charging component (0101) is the same as the polarity of the electrode (0202) on the side of the filter component adjacent to the component, and the other side (0201) is grounded, wherein the electrode is exposed Part of the surface has an anti-ozone coating.
  • the beneficial effect can avoid the harmful ozone gas generated by the conventional ionization device.
  • Figure 1 is a perspective view of the purification and filtration system of the present invention.
  • Figure 2 is a filter assembly comprising two sets of electrode sheets and a fiber filter assembly therebetween.
  • Figure 3 is a housing assembly including a housing body, a skeleton, and panels on both sides.
  • Figure 4 shows the filter assembly, which consists of two parts, fixed and active.
  • Figure 5 shows the forced air assembly, including the fan and the fixed plate.
  • Figure 6 shows the charged assembly
  • Figure 9 is another preferred form of the charged assembly.
  • Figure 10 is a filter assembly arranged in an arcuate manner.
  • Figure 11 is a filter assembly arranged in a spherical shape.
  • Figure 12 is a filter assembly arranged in a zigzag shape.
  • Figure 13 is a filter assembly arranged in an S-shape.
  • Figure 14 illustrates a preferred system arrangement of the present invention.
  • the system of the present invention includes a charging assembly (0101), a forced air assembly (0102), a filter assembly (0103), and a housing assembly (0104) having a gas flow conduit function for accommodating the assembly.
  • the contaminated gas medium is driven by the forced ventilation component (0102), and first passes through the charging component (0101) according to the direction of the arrow shown in the figure, wherein the suspended particulate pollutants are fully charged and then passed through the filtering component (0103). Under the action of the high voltage electric field, it is captured by the attraction of Coulomb force and is retained in the filter assembly (0103).
  • the purified gaseous medium passes through the filter assembly as shown in Figure 2, the ground electrode (0201), after the residual charge is neutralized, the treated gas exits the system.
  • the filter assembly (0103) In the arrangement of the system, the filter assembly (0103) must be placed downstream of the airflow or at the exit of the system. Experiments have shown that the high voltage part of the filter assembly (0103), between the high voltages of 8KV and 14KV, must be at least 2 cm above the other conductor parts of the system.
  • the charging component (0101) may be disposed on the more upstream of the airflow than the forced-ventilating component (0102);
  • the assembly (0101) is located further downstream of the airflow than the forced air assembly (0102).
  • the first embodiment of the present invention adopts the former scheme.
  • the system includes a housing assembly (0104).
  • a housing (0102) is used in the housing assembly (0104) for fixing the forced air assembly (0102), the charging assembly (0101), and the filter assembly (0103), and the adjustable voltage high voltage generating power source.
  • control switches, etc. include an active filter cartridge, as well as panels (0303) on both sides (0304), and surrounding housing body (0301).
  • the housing body (0301) should allow the gas medium to have a lower pressure drop Passed in case. Any existing known grille, orifice plate, mesh, etc. used in ventilation, ventilation, air conditioning, and heating devices can be used to facilitate the passage of airflow and provide a certain supporting strength.
  • the inside of the main body casing and the skeleton part should be as good as possible for the fluid to pass through, and the damping of the gas should be as small as possible, such as streamlined.
  • a lumen can be constructed using, for example, a foamed material.
  • thermoplastics such as ABS
  • PBT polybutylene terephthalate
  • PET polyethylene terephthalate
  • PC Polycarbonate
  • PS polystyrene
  • the filter assembly is divided into two parts: fixed and active.
  • the fixed portion (0401) is used to assist in loading and supporting a part of the filter element
  • the movable portion (0402) is composed of a movable door and a linkage switch.
  • the user can easily open the hatch to replace the filter element.
  • the interlock switch acts to cut off the main power of the system.
  • the door is combined with the panel on the same side, and the panel is closed when the door is closed.
  • the combination of the fiber filter compartment and the skeleton and the outer casing is required to ensure airtightness, and the gaseous medium to be purified can only pass through the filter assembly (0103).
  • the filter assembly (0103) is removably mounted to the mounting assembly of the housing assembly by any known and suitable method.
  • the filter assembly comprises an electrode (0201) (0202) through which two gases can pass, the electrode comprising at least two electrodes having different potential differences, the periphery being fixed to the insulating material.
  • a filter element (0203) is provided between the two electrodes.
  • the part comprises a fine fiber-like material or a porous structure thereof which is not closely packed, and can be arranged in a manner similar to a common air conditioning primary filter.
  • the fibers impart a dielectric property to the outside, which, in the same volume, can provide a much larger specific surface area than other common electrical dust collection components. Included between the fibers are regular or irregular passages through which a plurality of gas streams can pass relatively freely, ensuring low wind resistance of the channels.
  • the macromolecular fibers are polarized in a direction perpendicular to the electrode plates in a variable voltage high voltage electric field. For example, it has been experimentally verified that purification components made of nitrocellulose and biomass fibers can achieve a good purification effect. By providing an additional stable electric field that is stronger than the electret, this allows the filter fiber to be selected from a wide range of materials including, but not limited to, the above-described environmentally friendly, disposable degradation fibers.
  • Such fibers are preferably arranged in a longitudinal direction along the direction of the gas flow or in any direction forming an angle.
  • the finished filter element may be reinforced with objects that are relatively fixed in shape, including but not limited to mechanical, thermal bonding or chemical methods, such as square or circular objects having a thickness.
  • the filling ratio of the fiber material to the entire fiber filter element (0203) is preferably 1-15%.
  • the diameter of the fibers varies from 100 ⁇ m to 0.01 ⁇ m for different suspended particles.
  • the fiber filter (0203) should contain a considerable proportion of fiber components of comparable diameter and ultrafine particles.
  • the arrangement of different material layers may be parallel to the electric field, may be perpendicular to the electric field, or may be at a certain angle or even randomly arranged with the direction of the electric field.
  • the fiber filter (0203) has a finished specification of between 90 and 150 g/m 2 based on the preferred fill ratio and diameter of the fibers described above. However, the invention is not limited to such specifications.
  • the utility model also has the beneficial effects that the secondary pollution problem caused by the long-term accumulation of a large amount of contaminated particles due to improper operation can be avoided. Due to the increased selection of sources of high polymers or cellulose, it is easier for users to accept the concept of cost and environmental protection: the purification system should use consumables or even disposable materials. It is environmentally friendly and the cost is still very acceptable.
  • the indirect advantage of the disposable material of the present invention is that it avoids the added complexity of the self-cleaning device in the conventional purification device, and also avoids the secondary fine particles brought to the environment when the self-cleaning system, such as the vacuum cleaner, works.
  • the problem of pollution This is because it is unlikely that a typical self-cleaning system will capture smaller diameter particles.
  • Such self-cleaning systems are more common in some larger types of purification devices, and often use no consumables as a prominent feature of the device.
  • the present invention reduces the necessity of using an additional self-cleaning system due to the described beneficial effects, but the present invention does not preclude the possibility of adding a self-cleaning system for a certain need in the practical application of the system. .
  • the utility model solves the problems occurring in the above documents, and has the beneficial effects of avoiding adverse phenomena such as electric field arcing and ozone which may be harmful to the human body in abnormal operating states such as arcing, and avoiding insulation of the electrodes.
  • the efficiency brought about by processing is declining.
  • the device experiment can be stably operated for a long time without any arcing phenomenon or noise.
  • the electrode in the filter unit (0103) is preferably made of a conductor, and a mesh or porous conductor electrode is used, and the shape of the perforation is not limited to various shapes of a square, a polygon, or a circle. Due to the ease of arcing discharge, the neutralization of discharge particles before being captured, and some other reasons, in recent years, some purification devices have used insulation treatment methods (for example, US 5,549,735 covers all of the electrodes with an insulating material, but such insulation treatment of the electrodes results in a large drop in the spatial field strength of the electrodes, thereby reducing the efficiency of the device. Therefore, the utility model does not perform the insulation treatment on the electrode, but adopts the preferred fiber material and its appropriate arrangement form. It has been experimentally proved that the electrode distance is within the range of 1-5 cm, and no arc discharge is generated between the electrodes. Adverse consequences.
  • the system is preferably near the inlet side electrode (0202), and the medium ion generating electrode (0602) is used in Fig. 6. Connection of the same potential.
  • the charged particles and the plate have the same mutual exclusion force, but relatively small, the general forced ventilation device can completely overcome such force without affecting the free circulation of the polluting gas medium.
  • the charged particles can smoothly pass through such a plate to meet the polarized fiber (0203) and the discharge is captured. This is another important reason why the system does not need to use the common electrode insulation treatment method.
  • the filter assembly (0103) of the present invention has a dual beneficial effect on sterilization and antiviral.
  • a perforated or mesh electrode plate (0201) (0202) is provided and grounded, the mesh assembly not only has low air resistance, but on the one hand, the component acts as The reference potential point of the other high voltage electrode greatly enhances the electric field strength in the filtering space; on the other hand, based on the adverse consequences of the release of charged particles or ions, the component can further ensure that the present invention does not go to the system.
  • the space outside continues to release ions that may cause secondary pollution, which is another beneficial effect of the present invention.
  • the ground conductor component can also be considered to have an independent function of neutralizing a gaseous medium containing residual charged ions.
  • the forced air assembly (0102) utilizes a manner that forces the airflow to power the airflow such that the contaminant-containing airflow passes through the filter assembly (0103) whereby the suspended particulate matter is captured and collected in the passage.
  • One of the beneficial effects of the present invention is that, especially for relatively small particles, the specific working principle is that the fibers adsorb fine particles and promote fine particles to coagulate on the surface of the fibers and become larger particles, thereby being better captured. .
  • the fan (0502) or other forced air flow components can be of any suitable type and powered by either direct current or alternating current. Because the wind resistance of this system is relatively low, which makes it use some low power, quiet Fans are possible.
  • the Norwegian Purifico EC350 ultra-quiet axial fan which can be purchased at the Purifico Beijing representative.
  • the system of the utility model is not limited to a specific air volume, and in some products with a large output force, a fan with a larger power can be completely selected; similarly, for some small indoor spaces, a power size of a small size can also be selected. Fan.
  • the use of the housing body and other components should be combined in a gastight manner to ensure that the air medium effectively passes through the particular components as designed.
  • the forced draft portion may also employ a series of fans including, but not limited to, a centrifugal type, such as the eighth embodiment described below.
  • the forced ventilation device such as the fan (0502) is coupled to the bobbin (0302) by a circular hole plate (0501) by welding or screw fastening.
  • the circular hole of the fixed fan assembly should not hinder the fan blade rotation. The limit is as small as possible. For example, if a fan with a diameter of 350 mm is used, the opening diameter of 350 mm is preferred.
  • the natural frequency of the resonance of the steel plate should avoid the natural frequency of the common operating state of the fan as much as possible to avoid resonance noise.
  • the system charging component (0101) is mainly composed of a plasma generating pole (0602) and a closed conductor (0601) not limited to a circular ring or other shape.
  • Both the plasma generating pole (0602) and the closing conductor (0601) may be made of, but not limited to, a conductor material such as tungsten, stainless steel or copper, which is subjected to surface copper oxide spraying treatment, and carbon fiber may be used at the tip end portion thereof.
  • a conductor material such as tungsten, stainless steel or copper, which is subjected to surface copper oxide spraying treatment, and carbon fiber may be used at the tip end portion thereof.
  • a material with a slightly higher impedance This part is very important for the suspended particles in the air medium to be fully charged when entering the system, and for the purification ability of the system.
  • the plasma generating pole (0602) is a cylindrical or fiber bundle conductor having a sharp tip whose cross-sectional diameter is between 0.5 and 5 mm, and the cross-sectional diameter of the closed conductor (0601) is also between 0.5 and 5 mm.
  • the plasma generating pole (0602) is connected to the positive pole of the adjustable voltage high voltage generating power supply; the closed conductor (0601) is grounded.
  • the ring-shaped electrode may also be elongated in the axial direction and does not exceed the foremost end of the generating pole at a position toward the front end of the generating pole.
  • the ring-shaped electrode is fixed to the side of the air inlet by any known insulation and conforms to the shape of the air inlet.
  • the plasma generating pole (0602) At a suitable voltage, such as a direct current high voltage of 5000-14000V, the plasma generating pole (0602) generates a plasma. Among them, positive ions and electrons appear in equal amounts. The electrons contained therein have a higher emitter potential difference, while the positive ions flow in a direction with a lower potential difference, that is, a closed conductor (0601) and a lower portion of the body.
  • the plasma generated by the system belongs to thermal plasma. In the actual thermal plasma generating device, the output plasma moves in a jet shape and forms an umbrella similar to a wind curtain. Ion air curtain coverage.
  • Such an ion wind curtain has been experimentally verified to be very uniform and airtight, and a uniform wind feel can be felt by hand or candle flame test.
  • the suspended particulate matter contained on the intake side must first be fully charged by the plasma curtain through the influence of ions, which provides a guarantee for the purification capability of the entire system.
  • the bare conductor part of the above power source can be uniformly covered by a catalyst containing manganese dioxide or copper oxide to completely avoid harmful ozone in the plasma charging region (Yu Hei Liu 2005). Another benefit of selling corona charging methods for common similar devices fruit.
  • the plasma generating pole (0602) can be connected to, but not limited to, a power source of the following forms: a direct current high voltage, a direct current pulse, an alternating current high voltage, etc., and the voltage can also be adjusted in a fixed voltage type or a fixed voltage type.
  • the present invention is not limited to the practice of grounding the closed conductor (0601), its preferred method of grounding is not found in the prior patent documents, and one of the beneficial effects of this practice is that since the closed conductor (0601) is generally close to the casing, this It can effectively avoid the feeling of slight electric shock and discomfort caused by the ionization air charge formed by the traditional method of corona positive and negative poles, even if such a slight electric shock does not pose a threat to human health or life.
  • the grounding of this part can also improve the safety and stability of the entire system.
  • the outer casing of the system can be made of insulating materials such as engineering plastics or outer casings made of conductive materials such as metal. This system has the potential to be widely used in different environments.
  • the fiber material filled in the filter component (0103) can also be made of a traditional high polymer compound material, and the advantage of such an embodiment is that the cost of replacing the filter element of the current civil purifier can be solved, It can avoid the problem of secondary pollution caused by the filter element with high cost and low frequency of replacement.
  • Such conventional high polymer compounds are advantageous in that they are readily available on the market, are inexpensive, and can be properly cleaned and reused.
  • the fibrous material filled in the filter assembly (0103) is not limited to a material composed of cellulose or a fibrous material, and includes a plurality of finished products composed of a fibrous material and having a gas for passing through a physical shape, such as using a fiber-containing material.
  • One of the preferred embodiments is arranged in parallel using a direction similar to corrugated or honeycomb paperboard and an electric field. Loose degradable plant fibers are disposed in between. In the case of lower wind resistance, a large number of fibers polarized by the electric field will be captured by charged suspended particles in their vicinity.
  • the beneficial effect is that different forms of fibrous material can be provided separately for suspended particles of different particle sizes, and are more practical in the case of certain contaminant types.
  • the fiber assembly has a gauge of between 500 and 800 g/m2. Adjusting the specifications in this interval and conducting a series of experiments show that the optimal blending speed of the different specifications of the components is different, and there is no significant change in the efficiency of removing suspended particulates.
  • the invention is not limited to such specifications.
  • the fourth embodiment is based on the first embodiment, but the biggest difference from the first embodiment is that the forced air assembly (0102) is located at the most upstream or downstream of the airflow than the charged component (0101). . If using The present embodiment is applicable to the blades of the forced air venting assembly (0102) having a lower electric constant, and the advantageous effect is that the size of the system is designed to be smaller. The other parts are the same as the first embodiment.
  • this embodiment adopts a plurality of charging components and a plurality of charging components adopt an asymmetric polarity arrangement as shown in FIG.
  • the particles with different charge polarity will meet and coagulate before passing through the filter assembly (0103). After the fine particles have been coagulated, they become particles with a larger particle size and are more easily captured.
  • the other parts of this embodiment are the same as those of the first embodiment.
  • the condensation device of the system differs from the similar devices commonly used in the market in that the plurality of charged components of the system are located on the same plane, and the peripheral closed conductors (0601) are grounded.
  • Carbon fiber charging component As shown in Fig. 6, the plasma generating pole (0602) and the closing conductor (0601) may be, but not limited to, composed of the following materials: a conductor material such as tungsten, stainless steel or copper, and a carbon fiber or the like may be slightly higher at the tip end portion thereof. The material replaces the metal tip. Other than this, the other parts of this embodiment are the same as those of the first embodiment.
  • the mesh shape of the electrode plate (0201) (0202) is not limited to the mesh-shaped metal plate in the first embodiment, and other shapes such as a circular porous plate, a triangular porous plate, a polygonal porous plate, or other patterns of porous metal may be employed. Board making. Further, a plate made of an insulating material such as, but not limited to, a resin plate and a metal coating may be used. It is characterized in that the surface is electrically conductive and has a supporting function of a certain strength, and the air can flow substantially freely.
  • the electrode plate with a certain mesh and hole shape can be changed from a planar type to an endless belt type as shown in FIG. 10, a spherical shape as shown in FIG. 11, a zigzag shape as shown in FIG. 12, an S type as shown in FIG. 13, and the like. form.
  • the thus-converted filter assembly (1003/1103/1203/1303) can multiply the effective filtration area under a certain volume of conditions.
  • the present embodiment differs from the first embodiment and the fourth embodiment in Fig. 14 in that the direction of the air medium changes as it passes through the system.
  • a centrifugal fan (1402) is preferably used for this purpose.
  • the overall flow direction of the gaseous medium is hardly altered in the system.
  • the charging assembly (1401), the forced ventilation assembly (1402), the filter assembly (1403), and a gas flow conduit function capable of passing the above-mentioned components through which the gas can pass are included.
  • the gas stream first enters through an imaginary geometric axis of the charged component (1401) where the contaminating suspended matter particles are charged. The air flow is then changed to a diameter by a fan including but not limited to a centrifugal type To flow.
  • the filter assembly (1403) must be arranged annularly around the outside of the centrifugal fan (1402).
  • the electrode having the smaller inner diameter (1001) and the plasma generating electrode (1401) have the same pole polarity; the electrode having the larger outer diameter (1002) is grounded.
  • the fibrous material (1003) disposed between the two electrodes is also arranged in a ring shape. This part of the fiber material is polarized in the radial direction after the electrode is electrically connected, and the charged suspended particles are efficiently captured.
  • the components and their structurally supported portions need to be airtight to ensure that the air flow only flows as intended by the present invention.
  • the beneficial effect of the embodiment is that space can be saved, and the centrifugal fan can change the direction of the airflow to save space compared with the axial flow fan.
  • the rotor of the centrifugal fan (1402) and the filter assembly (1403) can be rotated together in a manner visible to the user.
  • Such an arrangement has visible moving parts in the home or in some office environments, such moving parts can intuitively alert the user to the state of operation and add interest to the purification apparatus.
  • the system can also set auxiliary components for pollutants other than large dust and suspended matter particles, such as primary filter, activated carbon filter assembly, and chemical adsorption assembly.
  • auxiliary component can be customized for the air medium of different pollution conditions, and generally does not affect the efficiency of the system itself for adsorbing particulate matter. If the design is reasonable, it will not cause a significant increase in the noise of the system.
  • the high-voltage power supply device should be equipped with a linkage switch.
  • the linkage switch acts to cut off the main circuit of the system and protect the operator. Safety.
  • the housing body is made of a metal material, it needs to be well grounded.
  • the filter component can also be provided with a pressure measuring sensor, which is used for detecting the use condition of the components in FIG. 2 and FIG. 10-13 for detecting the use condition of these components, and is issued when the pressure drop exceeds a certain value.
  • a signal prompting the user to replace the filter element in the filter assembly (0203/1003/1103/1203/1303).
  • Electrodes can be used, such as a brush or multiple single electrodes or wires. Regardless of the configuration used, the electrode or electrode configuration and positioning should provide sufficient voltage field in the outlet to polarize the fibrous material (0203) as desired.
  • the power supply form of the present invention can be selected in the form of DC high voltage, DC pulse high voltage, and AC high voltage.
  • the latter two can help the fine particles to charge differently, and produce a coagulation effect after collision, thereby improving the efficiency of purification.
  • the present invention is not limited by the construction and relative dimensions described and illustrated herein.
  • the high voltage power supply of the present invention is also not limited by the magnitude of the voltages described herein under different configurations and sizes. Generally, the larger the size, the higher the power supply voltage that is suitable for use.




气体介质悬浮颗粒物净化系统 技术领域
HEPA是市场上最常见的的净化处理方式(HEPA为英文高效空气过滤器High Efficiency Particulate Air Filter的缩写)。HEPA采用纯机械式过滤的方式,因而区别于离子、电子类净化设备。一般的HEPA滤网由于技术工艺的原因,对花粉、细菌、灰尘等大的颗粒捕捉比较容易,但对于粒径小于2.5微米以下的颗粒,粒径越小,捕捉越困难。此类设备一般而言风阻较大,需要大功率的为提供空气动力的设备,因而会消耗更多的电力、制造较大的噪音。噪音、能耗方面正是HEPA过滤系统的主要不足之处。
另外一种常见过滤设备属于静电、电子、离子类净化的范畴。这类设备一般都基于工业领域电除尘装置的原理,通常都是利用“平行板式电场”捕捉荷电颗粒(如CN 101130180B,WO 2012016481A1,CN101406798等),工业除尘的目的在于防止工业生产设备向大气的排放,而不会考虑对空气品质要求较高的例如室内生活空间、洁净室等地的需求(谭天祐等,1984)。除常见的平行平面板式系统以外,其他一些系统将平行的平面做了一些变换,如CN1980744B将基本的板式捕捉电场变换为多孔的方格形式,但是在密布的网格中布置不同电势差的集尘电极较为繁琐;如果采用所述开槽塑料板孔结构中增加隐藏电极的方法则又会增大制造成本以及降低捕捉面积;如果采用纯金属板孔结构的实施方式,则相比传统结构很难有实质的效率提升。CN101374605B则因为其电场捕捉颗粒的效果不能令人满意而采用板式捕捉电场后方再加一个滤芯的组合。增加一个过滤的层级理论上会提高净化器的净化效率。但是这样的静电加滤网的设置方式其实只是一种简单的组合。CN102164678B、CN1221358A以及其申请人在其他国家公布的专利如US6203600则将常见的平行平面通过卷绕变换为两条平行的螺线表面。这样虽可增大捕捉区域面积,但增加有 限。
现有专利文献有一些是主要利用臭氧来对空气进行消毒杀菌的装置(例如: CN103673124A,CN201996881U,CN86106909等),而臭氧由于会刺激人体呼吸系统而产生不良的影响。为此,中国国家标准“GBT18883-2002室内空气质量标准”中明确限制了室内臭氧浓度的上限值为50ppb,所以这类主动产生臭氧的设备一般都不能满足该标准所以不宜用于室内工作居住等环境。
所述系统包括一个外壳组件(0104)。如图3所示,外壳组件(0104)中利用一个骨架(0302)用来固定强制通风组件(0102)、荷电组件(0101)、和过滤组件(0103),以及可调电压式高压发生电源以及控制开关等;包括一个活动滤芯仓,以及两侧的面板(0303)(0304),和周围的外壳本体(0301)等。外壳本体(0301)应允许气体介质以压降较低的 情况下通过。可采用任何现有已知的在通风、换气、空调、供暖装置上采用的格栅、孔板、网状等利于气流通过并提供一定支撑强度的形式。
这类纤维优选的排列方式为沿着气流方向纵向布置,或者形成一定角度的任意方向。滤芯成品可采用包括但不限于机械、热粘或者化学方法加固为形状相对固定的物体,例如具有厚度的方形或圆形物体。纤维材料占整个纤维滤芯(0203)的填充比例以1-15%为宜。针对不同的悬浮物颗粒,纤维的直径从100μm-0.01μm不等。纤维滤芯(0203)中应 含有相当比例的、直径和超细颗粒相当的纤维成分。其中,不同的材料层的排列可以平行于电场、可以垂直于电场,也可以和电场方向成一定的夹角甚至随机布置。在本优选示例中,按上述纤维优选的填充比例和直径,纤维滤芯(0203)的成品规格在90-150g/m2之间。但是本实用新型并不局限于这样的规格。
早在1983年,美国的Lawrence Livermore National Laboratory(LLNL)实验室曾在美国能源部的资助下进行过令导体或者半导体纤维极化带电的尝试。他们发现给纤维荷电的确可以极大的提高捕捉颗粒的效果。但是因为电场容易拉弧而不能充分的提高电场电压,并且会造成净化的中断和效率的降低。(LLNL,1983)近年来又有一些科研人员(US5549735)尝试给电极全部或者部分进行绝缘处理以避免拉弧或者避免荷电颗粒被过早的中和,但这势必会同时将颗粒捕捉效率大大下降。虽然有学者认可该领域的价值而在继续进行研究,以解决理论和实际方面的距离。(Chiu-Sen,2001)但迄今为止,这样一个具有潜力的技术因为拉弧或者中和荷电颗粒导致效率下降等原因,并未真正得到实际的市场推广应用。
为此,过滤组件(0103)中电极优选由导电体制作,采用网状或者多孔的导体电极,穿孔的形状是不仅限于方形、多边形、圆形的各种形状。由于易于拉弧放电、荷电颗粒在被捕获前提前中和放电等原因,近年来有一些净化装置采用绝缘处理电极的方法(例如 US5549735将电极全部用绝缘材料覆盖),但是如此对电极的绝缘处理会导致空间电场场强的大幅度下降从而降低装置的效率。所以本实用新型不对电极进行绝缘处理,而是采用了优选的纤维材料和及其适当的布置形式,经实验证明,电极距离在1-5cm范围之内,电极之间不会产生拉弧放电等不良后果。
如图5所示,风机(0502)或者是其他强制空气流动的组件可以采用任何合适的类型,并由直流或者交流供电。因为本系统的风阻相对很低,这使得采用一些低功耗、静音的 风机成为可能。比如挪威Purifico EC350超静音轴流风机,该风机可在Purifico北京代表处购得。本实用新型的系统并不限于特定的风量,在一些出力较大的产品中,完全可以选用功率更大的风机;同理,针对一些较小的室内空间,也可以选用功率尺寸都较小的风机。采用外壳本体和其他部件应当以气密的形式结合以保证空气介质按照设计的要求有效通过特定的部件。在某些优选方案中,强制通风部分也可以采用包括但不限于离心式的系列风机,如下述第八实施方式。
在适当的电压下,例如5000-14000V的直流高压电,等离子发生极(0602)产生等离子体。其中正离子和电子等量出现。其中所含的电子流入电势差较高的发生极,而正离子则流向电势差较低的方向,也就是闭合导体(0601)和机身其他电较低的部位。在环境气压接近大气压时,本系统产生的等离子体属于热等离子体(thermal plasma),在实际的热等离子体发生装置中,输出的等离子体呈喷射状运动,并形成一个类似于风幕的伞状离子风幕覆盖面。这样的离子风幕经实验验证可以十分的均匀和密闭,并且用手或者蜡烛火苗实测也可以感受到均匀的风感。进气侧所包含的悬浮颗粒物都必须首先通过等离子风幕受离子影响而充分荷电,这给整个系统的净化能力提供了保障。以上电源极中裸露的导体部分均可由含有二氧化锰或者氧化铜的触媒均匀覆盖,以较彻底的避免在等离子荷电区产生有害的臭氧(Yu Hei Liu 2005)这是本实用新型不同于市售常见类似设备电晕荷电方法的另外一个有益效 果。
如图7或图8,第四实施方式以第一实施方式为基础,但和第一实施方式最大的区别在于强制通风组件(0102)较荷电组件(0101)位于气流的最上游或者最下游。如果采用介 电常数较低的强制通风组件(0102)的叶片,则可以采用本实施方式,其有益效果是有利于将系统的尺寸设计的更小。其他部分则与第一实施方式相同。
在本实施方式中,与第一、第四实施方式同样包括荷电组件(1401)、强制通风组件(1402)、过滤组件(1403)以及气体能够通过的一个容纳上述组件的兼具气流管道功能的外壳组件(1404)。如图14中箭头所示,气流先通过荷电组件(1401)的一个假想的几何轴线方向进入,在其中污染悬浮物颗粒荷电。气流然后经过包括但不限于离心式的风机改为径 向流动。
上述实施方式都属于本实用新型的一些示例性说明实施例。但应该理解的是,本实用新型的原理可以应用于其他现有所有可预见的空气介质的净化和过滤领域,其工作环境可能是居住环境的空气净化、移动车辆或航空器空间的净化、建筑的中央空调或者净化系统, 甚至是更大空间如体育馆等室内、室外空间的净化。
Lawrence Livermore National Laboratory(LLNL)Electric Air Filtration:Theory,Laboratory Studies,Hardware Development,and Field Evaluations.1983P101,P103
Chiu-Sen Wang,Electrostatic forces in fibrous filters—a review,Powder Technology 118 2001166–170
Hugo Destaillats,Mohamad Sleiman and William J.Fisk,Evaluation of Pollutant Emissions from Portable Air Cleaners Final Report:Contract No.10-320,Lawrence Berkeley National Laboratory,December 2014
EPA,Guide to Air Cleaners in the Home,Office of Air and Radiation Indoor Environments Division,United States Environmental Protection Agency,2008,p5
Yu Hei Liu 2005Comparison of Different Manganese Catalysts to Remove Ozone,CO and IPA in Air Streams中国台湾“交通大学”环境研究所
Whitby K T.The physical characteristics of sulfur aerosols[J].Atmospheric Environment,1978,12:135~159.

Claims (10)

  1. 一种气体介质悬浮颗粒物净化系统,该系统包括荷电组件(0101)、强制通风组件(0102)、过滤组件(0103)以及气体能够通过的一个容纳上述组件的管道,其特征在于所述过滤组件(0103)至少包含两个电极,且电极之间有纤维材料。
  2. 根据权利要求1所述的气体介质悬浮颗粒物净化系统,其特征在于其纤维材料之间有空间可供气流通过,在高压电极的作用下,纤维荷电且其间隔的空间内产生电场。
  3. 根据权利要求2所述的气体介质悬浮颗粒物净化系统,其特征在于其纤维的直径的范围为100μm‐0.01μm。
  4. 根据权利要求2所述的气体介质悬浮颗粒物净化系统,其特征在于其纤维材料由可降解酸性纤维制成。
  5. 根据权利要求2所述的气体介质悬浮颗粒物净化系统,其特征在于其纤维材料由高分子聚合物纤维制成。
  6. 根据权利要求1所述的气体介质悬浮颗粒物净化系统,其特征在于其纤维材料的层状结构,层状结构之间有空间可供气流通过。
  7. 根据权利要求1所述的气体介质悬浮颗粒物净化系统,其特征在于高压电极不经过绝缘处理,并且气体可以从电极穿过。
  8. 根据权利要求1所述的气体介质悬浮颗粒物净化系统,其特征在于其荷电组件(0101)中等离子发生极(0602)的极性与过滤组件(0103)中靠近荷电组件(0202)的一侧的电极极性一致,而另外一个过滤组件中的电极(0201)接地。
  9. 根据权利要求1所述的气体介质悬浮颗粒物净化系统,其特征在于其荷电组件(0101)由带有尖端的等离子发生极(0602)和闭合导体(0601)组成,并且其中等离子发生极(0602)接高压电源,而其中闭合导体(0601)接地。
  10. 根据权利要求1所述的气体介质悬浮颗粒物净化系统,其特征在于其荷电组件(0101)中裸露的导体部分覆盖有抗臭氧涂层。
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