A new type of low-resistance high-efficiency air filter and air conditioner thereof

Abstract

The application discloses a novel low-resistance high-efficiency air filter, which comprises a frame, a corona electrode, an electrostatic fiber layer capable of charging, a stationary electrode closely attached to the electrostatic fiber layer capable of charging and a ground electrode which are arranged in the frame in a front-rear interval along an air flow direction; the corona electrode is composed of a plurality of electrically connected wires, and the corona electrode generates corona when electrified to make dust particles in the flowing air carry negative charges; the stationary electrode continuously charges the electrostatic fiber layer capable of charging when electrified to make the electrostatic fiber layer capable of charging continuously carry positive charges; and the electrostatic fiber layer capable of charging filters the air through physical interception and electrostatic adsorption. The application further discloses a purification air conditioner. The novel low-resistance high-efficiency air filter and the purification air conditioner have the air filtering effect of low resistance, high efficiency, stable filtering performance and no ozone generation, and have the advantages of simple structure, good adaptability and convenient installation and maintenance.

Description

Technical Field

[0001] This invention relates to air filtration devices, specifically to a novel low-resistance high-efficiency air filter, and a purification air conditioner including the low-resistance high-efficiency air filter. Background Technology

[0002] Due to pollution from the external natural environment and the need for air circulation and replacement indoors, such as in public places, offices, and homes, and especially in special locations with hygiene standards like hospitals, pharmaceutical factories, and food factories, air conditioning and air circulation systems accumulate large amounts of dust particles and bacteria, becoming significant sources of air pollution in these environments. Therefore, air filtration and purification are essential. Furthermore, with the increasing awareness of health regarding the transmission of viruses through the air, the need for air purification is also growing.

[0003] Traditional air filtration relies on physical filtration using air filter cotton or filter cartridges. However, these filters, designed to remove fine airborne particles, exhibit significant resistance. For example, in a clean operating room with strict cleanliness standards, achieving a Class 100 clean environment requires a filter with a filtration level no lower than 35 as specified in the national standard GB / T 13554-2020. This filter must have an efficiency of ≥99.95% (particle size 0.3μm) at rated airflow (referred to in the industry as an H13 high-efficiency filter). The initial resistance after installing this high-efficiency filter is >200Pa. Furthermore, the filtration efficiency decreases with increasing usage time and frequency.

[0004] To reduce resistance, two types of filters are generally used: electrostatic fiber filters and electrostatic fiber filters. These products are charged when they leave the factory, but the charge gradually decreases with use and changes in ambient temperature and humidity, resulting in a continuous decrease in filtration efficiency. Furthermore, due to the fiber material and its internal gaps, the filtration effectiveness is not high. Moreover, this type of filter is susceptible to moisture, oil, or neutral non-charged particles, and its filtration performance is not guaranteed.

[0005] Another type is the electrostatic precipitator filter. This type of filter generates a corona discharge using an 8000V high-voltage wire. When air flows through the corona section, dust particles in the air become charged. Passing through a 4000V secondary high-voltage positive electrode, the charged dust particles are adsorbed onto a metal plate under the influence of the electric field of the collecting electrode, thus purifying the air. However, if the gap between the collecting electrodes is too large, tiny particles cannot be adsorbed, resulting in low purification efficiency; if the gap is too small, it can cause discharge and produce ozone. Therefore, limited by the physical gap between the collecting electrodes, this type of electrostatic precipitator filter cannot achieve both high efficiency and ozone-free operation. Furthermore, this type of filter has a filtration efficiency of less than 50% for 0.3μm particles, and its filtration efficiency is greatly affected by particle properties and temperature and humidity, resulting in unstable performance. In addition, the thickness of this type of filter is generally around 200mm, and the use of all-metal materials leads to its large size, heavy weight, and inconvenient installation and maintenance. Summary of the Invention

[0006] In view of this, it is necessary to propose a new type of low-resistance, high-efficiency air filter that has stable filtration performance and does not produce ozone, and is simple in structure, adaptable, and easy to install and maintain.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A novel low-resistance, high-efficiency air filter includes a frame, corona electrodes, charged electrostatic fiber layers, and a ground electrode, all spaced back-to-back along the airflow direction within the frame. The corona electrodes are composed of several wires electrically connected to a power source. When energized, the corona electrodes generate a corona discharge, causing dust particles in the flowing air to become negatively charged. When energized, the ground electrode continuously charges the charged electrostatic fiber layers, keeping them continuously positively charged. The charged electrostatic fiber layers filter the air through physical interception and electrostatic adsorption.

[0009] Furthermore, the electret electrode is attached in close contact with the electrostatic fiber layer of charge facing the corona electrode side.

[0010] Furthermore, the ground electrode is disposed between the corona electrode and the electrostatic fiber layer and close to the corona electrode.

[0011] Furthermore, the corona electrode and the ground electrode are assembled in an inner frame and are integrally fitted into the frame.

[0012] Furthermore, it also includes a disinfection and purification module, which is located on the side of the frame near the electrostatic fiber layer and is used to disinfect and purify the filtered air.

[0013] Furthermore, the disinfection and purification module includes a shell that extends through both sides. One side of the shell that extends through is disposed opposite to the electrostatic fiber layer and is connected to the frame. At least one inner wall of the shell is provided with an ultraviolet lamp. The inner walls of the shell together form an air disinfection and purification space.

[0014] Furthermore, the disinfection and purification module also includes a plasma generator, which is installed on a different inner wall than the ultraviolet lamp.

[0015] Furthermore, the disinfection and purification module also includes a photocatalytic mesh, which is disposed at the through-hole of the housing near the electrostatically charged fiber layer.

[0016] Furthermore, the disinfection and purification module also includes a protective net, which is disposed at the opening on the side of the housing away from the through-hole of the electrostatic fiber layer.

[0017] The present invention also provides a purification air conditioner, including an air conditioner unit and a novel low-resistance high-efficiency air filter, wherein the low-resistance high-efficiency air filter is disposed inside the air conditioner unit and / or at the air supply vent and / or at the air return vent.

[0018] The beneficial effects of this novel low-resistance high-efficiency filter are as follows:

[0019] 1) This invention achieves a filtration efficiency of over 95% for fine particles by combining the physical interception of the electrostatic fiber layer itself with electrostatic adsorption filtration, while also meeting the requirement of low resistance.

[0020] 2) The combination of physical interception and electrostatic adsorption filtration in this invention means that the corona electrode and the electret electrode do not require too high a voltage. At the same time, since the electrode spacing does not affect the filtration performance, there are no high requirements for the electrode spacing, thus achieving high efficiency without generating ozone.

[0021] 3) The electret continuously charges the charged electrostatic fiber layer, making the filtration performance of the charged electrostatic fiber layer stable and reliable.

[0022] 4) The corona electrode and electret electrode do not require high voltage and the electrode spacing is not too demanding, which makes the structure of the present invention simple. At the same time, it can be easily modified and installed on ordinary air conditioners, circulating ventilation systems or fresh air fans to achieve low resistance and high efficiency filtration effect. It has good adaptability and is easy to install and maintain.

[0023] The present invention also provides a purification air conditioner with the above-mentioned novel low-resistance high-efficiency air filter, which achieves air conditioning purification effect with low resistance, high efficiency, stable filtration performance and no ozone generation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a novel low-resistance high-efficiency air filter according to the present invention;

[0025] Figure 2 for Figure 1 A partial sectional view of AA;

[0026] Figure 3 This is a schematic diagram of another embodiment of the novel low-resistance high-efficiency air filter of the present invention;

[0027] Figure 4 This is a schematic diagram of the disinfection and purification module structure in this invention;

[0028] Figure 5 for Figure 4 Schematic diagram of partial cross-section of the middle BB;

[0029] Figure 6 for Figure 4 Schematic diagram of partial cross-section of the central CC region;

[0030] Figure 7 This is a schematic diagram of the structure of a clean air conditioner according to the present invention;

[0031] Figure 8 A schematic diagram of the fan coil unit modification structure for installing the novel low-resistance high-efficiency air filter of the present invention;

[0032] Figure 9 A schematic diagram of an embedded ceiling structure for installing a novel low-resistance high-efficiency air filter according to the present invention;

[0033] Figure 10 A schematic diagram of a conventional fresh air system for installing the novel low-resistance high-efficiency air filter of this invention;

[0034] Figure 11 A schematic diagram of a conventional circulating air handling unit for installing the novel low-resistance high-efficiency air filter of this invention;

[0035] Figure 12 A schematic diagram of a clean air purifier structure for installing a novel low-resistance high-efficiency air filter according to the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Novel low-resistance high-efficiency air filter; 11. Frame; 12. Corona electrode; 13. Electrostatic fiber layer; 14. Electra electrode; 15. Ground electrode; 16. Inner frame; 17. Power supply box; 2. Disinfection and purification module; 21. Housing; 22. Ultraviolet lamp; 23. Plasma generator; 24. Photocatalyst mesh; 25. Protective mesh; 26. Ultraviolet lamp driver; 3. Clean air conditioner; 4. Fan coil unit; 5. Embedded ceiling; 6. Ordinary fresh air unit; 7. Ordinary circulating unit; 8. Clean fresh air unit. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be further described clearly and completely below in conjunction with the embodiments of this invention. It should be noted that the described embodiments are merely some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0039] It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0040] The terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the use of “first,” “second,” “third,” and “fourth” to designate a feature may explicitly or implicitly include one or more of that feature.

[0041] Example 1

[0042] like Figure 1-2 As shown, a novel low-resistance high-efficiency air filter 1 includes a frame 11, a corona electrode 12, an electrostatic fiber layer 13, an electret electrode 14 attached to the electrostatic fiber layer 13, and a ground electrode 15, all arranged at intervals along the airflow direction within the frame 1. A power supply box 17 is provided at one end of the frame, and the power supply box 17 is electrically connected to the corona electrode 12, the electret electrode 14, and the ground electrode 15. The power supply box 17 supplies power to the corona electrode 12 and the electret electrode 14. Of course, the corona electrode and the electret electrode can also be directly powered by an external power source.

[0043] The corona electrode 12 is composed of several horizontally spaced wires. Powered by the power supply box, the corona electrode can generate corona discharge, causing airborne dust particles to become negatively charged, even without a very high voltage. However, for faster and more efficient charging of airborne dust particles, a voltage of 8000-10000V is preferred for the corona electrode. Similarly, the electret electrode 14, powered by the power supply box, can continuously charge the electrostatic fiber layer 13 with a positive charge without requiring a very high voltage. For faster and more efficient charging of the electrostatic fiber layer, a voltage of 4000V is preferred for the electret electrode.

[0044] The chargeable electrostatic fiber layer 13 is preferably an electrostatic fiber cotton that can carry charge. Of course, the present invention is not limited to electrostatic fiber cotton that can carry charge, and other electrostatic fiber materials that can carry charge are also included in the chargeable electrostatic fiber layer of the present invention.

[0045] The working principle of this novel low-resistance high-efficiency air filter is as follows: When the power supply box is turned on, it provides a voltage of 8000-10000V to the corona electrode, which generates a corona discharge. At the same time, the power supply box provides a voltage of about 4000V to the electret electrode, which continuously supplies power to the charged electrostatic fiber layer, keeping it continuously charged with positive charge. When air flows through, it enters the corona section. The dust particles in the air are negatively charged. The negatively charged dust particles pass through the charged electrostatic fiber layer with the air. Particles larger than 0.5μm are mainly filtered out in the air by the physical interception of the charged electrostatic fiber layer. Particles smaller than 0.5μm, such as 0.3μm and 0.1μm, are filtered out in the air by the electrostatic adsorption of the positive charge of the charged electrostatic fiber layer.

[0046] The following are experimental test data before and 30 minutes after the air conditioner is started with the filter of this invention installed, as well as the experimental comparison results between the filter of this invention and two existing low-resistance air filters.

[0047] The experimental environment parameters for comparison were as follows: dimensions: 4m * 3.5m * 3m (length * width * height), volume: 42m³. 3 The experimental operating room has an indoor temperature of 15.5℃, humidity of 57%, and wind speed of 1m / s.

[0048] Detection tool: Dust particle counter.

[0049] The data collected before and 30 minutes after starting the air conditioner equipped with the novel low-resistance high-efficiency air filter of this invention are shown in Table 1 below:

[0050] (Table 1)

[0051]

[0052] The data from a single-pass filtration experiment comparing the filter of this invention with two existing low-resistance air filters are shown in Table 2 below:

[0053] (Table 2)

[0054]

[0055] The air cleanliness levels and maximum particle concentration values ​​are shown in Table 3 below:

[0056] (Table 3)

[0057]

[0058] The statistical results of the above experimental data show that:

[0059] 1. The filtration efficiency of electrostatic dust collectors for 0.3μm particles is less than 50% (leakage rate of 50%), the filtration efficiency of H11 electrostatic fiber filters for 0.3μm particles is about 91% (leakage rate of 9%), while the filter of this invention achieves a filtration efficiency of over 95% for 0.3μm particles (leakage rate of 5%). The leakage rate of the filter of this invention is reduced by (9-5) / 9 = 44.4% compared to the H11 electrostatic fiber filter, and by (50-5) / 50 = 90% compared to the electrostatic dust collector.

[0060] 2. Comparing the air cleanliness levels with maximum particle concentration values, the experimental operating room equipped with the filter of this invention can achieve the traditional Class 100 cleanroom standard. In a traditional operating room, achieving a Class 100 cleanroom environment requires a filter with a filtration level no lower than 35 as specified in the national standard GB / T 13554-2020, with an efficiency ≥99.95% (particle size 0.3μm) at rated airflow (industry term: H13 high-efficiency filter). The initial resistance after installing this high-efficiency filter is >200Pa, while the resistance after installing the filter of this invention is <50Pa.

[0061] Based on the above experimental tests and comparisons, the beneficial effects of the low-resistance, high-efficiency air filter of the present invention compared to existing filters are as follows:

[0062] (1) The combination of the electrostatic fiber layer itself with the electrostatic adsorption filter can achieve a filtration efficiency of 95% for fine particles, while greatly reducing resistance, and truly achieving a high-efficiency and low-resistance air filtration effect.

[0063] (2) The combination of physical interception and electrostatic adsorption filtration means that the corona electrode and the electret electrode do not need to be too high. At the same time, since the electrode spacing does not affect the filtration performance, there is no high requirement for the electrode spacing, achieving high efficiency without generating ozone.

[0064] (3) The electret continuously charges the charged electrostatic fiber layer, making the filtration performance of the charged electrostatic fiber layer stable and reliable.

[0065] (4) The filter of the present invention has a simple structure and can be easily modified and installed on ordinary air conditioners, circulating ventilation systems or fresh air fans to achieve low resistance and high efficiency filtration effect. It has good adaptability and is easy to install and maintain (this point will be explained in conjunction with specific equipment below).

[0066] Furthermore, such as Figure 1-2 As shown, the electret electrode 14 is closely attached to the electrostatic fiber layer 13 with charge charge on the side facing the corona electrode 12, which makes the filter of the present invention more compact, more stable and safer while improving the filtration effect.

[0067] Furthermore, such as Figure 1-2 As shown, the ground electrode 15 is disposed between the corona electrode 12 and the electrostatic fiber layer 13 and close to the corona electrode 12, which makes the stability and safety of the present invention higher while making the structure more compact. Preferably, as Figure 1-2 As shown, the corona electrode 12 and the ground electrode 15 are integrated in an inner frame 16 and are fully fitted into the frame 11, which makes the filter of the present invention more integrated and easier to install and maintain.

[0068] Example 2

[0069] This embodiment is a technical solution that adds a disinfection and purification module to the existing embodiment 1.

[0070] like Figure 3 As shown, the novel low-resistance high-efficiency air filter 1 of the present invention also includes a disinfection and purification module 2, which is located on the side of the frame 11 near the electrostatic fiber layer 13.

[0071] Specifically, such as Figure 4-6 As shown, the disinfection and purification module 2 includes a shell 21 extending through both sides. One side of the shell 21 is positioned opposite to the electrostatic fiber layer 13 and communicates with the frame 11. At least one inner wall of the shell 21 is provided with an ultraviolet lamp 22. The inner walls of the shell 21 together form an air disinfection and purification space. Preferably, as shown... Figure 4 As shown, the ultraviolet lamps are distributed on one inner wall and the upper and lower inner walls of the housing, ensuring that the air disinfection and purification space is evenly irradiated with ultraviolet light. Preferably, as shown... Figure 4 As shown, the disinfection and purification module also includes a UV lamp driver 26 within its housing, ensuring more stable and reliable operation of the UV lamp. The UV lamp can eliminate and purify particles filtered by the electrostatic fiber layer, as well as viruses and bacteria in the air flowing through the purified space. This prevents viruses and bacteria from spreading and disseminating indoors with air circulation, thus reducing the quality of the purified air and ensuring safer replacement and installation later.

[0072] Furthermore, such as Figure 4 , Figure 6 As shown, the disinfection and purification module 2 also includes a plasma generator 23. The plasma generator 23 and the ultraviolet lamp 22 are disposed on different inner walls. Preferably, as shown in the figure, the plasma generator 23 is disposed on the inner wall opposite to the ultraviolet lamp, which ensures that the plasma can be evenly distributed throughout the disinfection and purification space. The plasma generator can play a role in disinfection and sterilization, ensuring the quality of purified air and making subsequent replacement and installation safer.

[0073] Furthermore, such as Figure 5As shown, the disinfection and purification module 2 also includes a photocatalytic mesh 24. The photocatalytic mesh 24 is disposed at the through-hole of the shell 21 near the electrostatic fiber layer 13. The air entering the disinfection and purification module first passes through the photocatalytic mesh 24. Under the illumination of the ultraviolet lamp, the photocatalytic mesh 24 continuously ensures that the activation medium is not depleted and can be continuously regenerated and used. It can effectively remove harmful gases and odors in the air flowing through it, and also has a bactericidal effect.

[0074] Furthermore, such as Figure 5 As shown, the disinfection and purification module 2 also includes a protective net 25, which is located at the opening on the side of the housing 21 away from the electrostatic fiber layer 13 that can carry out the safety protection.

[0075] Example 2 of the novel low-resistance, high-efficiency air filter of the present invention, based on the beneficial effects of low resistance, high efficiency, stable filtration performance, and no ozone production of Example 1, also has a disinfection and purification function. It not only achieves a Class 100 medical purification environment but also realizes the dual carbon goals of green environmental protection and energy conservation.

[0076] This invention also provides a purification air conditioner, such as... Figure 7 As shown, the air purifier of the present invention includes an air conditioning unit 3 and a novel low-resistance high-efficiency air filter 1 of the above-described embodiments 1 and 2. The low-resistance high-efficiency air filter 1 can be conveniently installed inside the air conditioning unit and / or at the air supply vent (not shown) and / or at the air return vent (not shown) via a frame 11. In addition to the basic functions of an air conditioner, the air purifier of the present invention also has low-resistance, high-efficiency, stable filtration performance, and ozone-free filtration functions, as well as disinfection and purification functions.

[0077] In addition, the novel low-resistance high-efficiency air filter of this invention can be easily modified to achieve low-resistance, high-efficiency filtration and disinfection purification effects at a very low cost. It has good adaptability and is easy to install and maintain.

[0078] Modification of ordinary fan coil units, such as Figure 8 As shown, a fan coil unit equipped with a novel low-resistance high-efficiency air filter of the present invention includes a fan coil unit body 4, an air supply duct 41, an air supply diffuser 42, a return air grid 43, and a novel low-resistance high-efficiency air filter 1 of the present invention installed at the outlet of the air supply diffuser 42 or at the inlet of the return air grid 43 via a frame 11.

[0079] Modification of embedded ceilings, such as Figure 9As shown, the embedded ceiling for installing the novel low-resistance high-efficiency air filter of the present invention includes an embedded ceiling body 5 and the novel low-resistance high-efficiency air filter 1 of the present invention installed at the outlet of the embedded ceiling via a frame 11.

[0080] Retrofitting a regular fresh air system, such as Figure 10 As shown, a conventional fresh air unit equipped with a novel low-resistance high-efficiency air filter of the present invention includes a fresh air unit body 6 and a novel low-resistance high-efficiency air filter 1 of the present invention installed in the fresh air unit body through a frame 11, so that the fresh air unit air system passes through air intake, G4 primary filtration, fan, flow equalization, F8 medium-efficiency filtration, low-resistance high-efficiency filtration disinfection and purification, H10 sub-high-efficiency filtration and air outlet.

[0081] Modification of ordinary circulating units, such as Figure 11 As shown, a conventional circulating unit equipped with a novel low-resistance high-efficiency air filter of the present invention includes a circulating unit body 7 and a novel low-resistance high-efficiency air filter 1 of the present invention installed in the circulating unit body 7 via a frame 11, so that the air system of the circulating unit passes through air inlet, G4 primary filtration, fan, flow equalization, F8 medium-efficiency filtration, low-resistance high-efficiency filtration disinfection and purification, surface cooling and air outlet.

[0082] Retrofitting cleanroom ventilation systems, such as Figure 12 As shown, the clean air purifier with a novel low-resistance high-efficiency air filter of the present invention includes a clean air purifier body 8 and a novel low-resistance high-efficiency air filter 1 of the present invention installed in the clean air purifier body through a frame 11. The clean air purifier air system passes through air intake, primary filtration, fan, flow equalization, F8 medium-efficiency filtration, low-resistance high-efficiency filtration disinfection and purification, H10 sub-high-efficiency filtration, surface cooling, deep dehumidification, heating and air outlet.

[0083] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A new low resistance high efficiency air filter characterized in that, The device comprises a frame, a corona electrode, an electrostatic chargeable fiber layer, a stationary electrode and a ground electrode, which are arranged in the frame in sequence along the direction of air flow; the corona electrode is composed of several horizontally arranged wires, which are electrically connected to a power source; when the corona electrode is electrified, it generates corona to make the dust particles in the air flow negatively charged; the stationary electrode is arranged on the side of the electrostatic chargeable fiber layer which faces the corona electrode; when the stationary electrode is electrified, it continuously charges the electrostatic chargeable fiber layer to make the electrostatic chargeable fiber layer positively charged; the electrostatic chargeable fiber layer filters the air through physical interception and electrostatic adsorption.

2. A new type of low resistance and high efficiency air filter according to claim 1, characterized in that, The ground electrode is arranged between the corona electrode and the electrostatic chargeable fiber layer and close to the corona electrode.

3. A new type of low resistance and high efficiency air filter according to claim 2, characterized in that, The corona electrode and the ground electrode are arranged in an inner frame and are wholly sleeved in the frame.

4. A new type of low resistance and high efficiency air filter according to claim 1, characterized in that, The device further comprises a sterilization and purification module, which is arranged on the side of the frame close to the electrostatic chargeable fiber layer and is used for sterilizing and purifying the filtered air.

5. A new type of low resistance and high efficiency air filter according to claim 4, characterized in that, The sterilization and purification module comprises a shell with two through sides, one of which is arranged opposite to the electrostatic chargeable fiber layer and is in communication with the frame; at least one inner side wall of the shell is provided with an ultraviolet lamp; the inner side walls of the shell form an air sterilization and purification space.

6. A new type of low resistance and high efficiency air filter according to claim 5, characterized in that, The sterilization and purification module further comprises a plasma generator, which is arranged on a different inner wall from the ultraviolet lamp.

7. A new type of low resistance and high efficiency air filter according to claim 5, characterized in that, The sterilization and purification module further comprises a photocatalyst net, which is arranged on the through side of the shell close to the electrostatic chargeable fiber layer.

8. A new type of low resistance and high efficiency air filter according to claim 5, characterized in that, The sterilization and purification module further comprises a protective net, which is arranged on the through side of the shell away from the electrostatic chargeable fiber layer.

9. A purification air conditioner characterized by comprising: The device comprises an air conditioner host and a new type of low-resistance high-efficiency air filter according to any one of claims 1-8, which is arranged in the interior of the air conditioner host or / and at the air supply port or / and at the air return port.

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