High-efficiency low-resistance hawk wing active electrostatic auxiliary filter section of fresh air handling unit for building

Abstract

The application discloses a high-efficiency and low-resistance hawk-wing-shaped active electrostatic auxiliary filtering section of a new fan unit for buildings, and relates to the technical field of air purification equipment. The filtering section comprises a shell, a pre-drying, pre-filtering and negative ion integrated section, a first pipe wall dust collecting section, a hawk-wing-shaped high-voltage electrostatic filtering section, a second pipe wall dust collecting section and an optional function module which are sequentially arranged in the shell from an air inlet to an air outlet. The pre-drying, pre-filtering and negative ion integrated section is arranged at the air inlet, and the optional function module is arranged at the air outlet. The filtering section can realize the dual effects of high filtering efficiency and low air resistance, is more efficient in intercepting and killing microorganisms, and has a modular configuration and multiple functions.

Description

Technical Field

[0001] This invention relates to the field of air purification equipment technology, specifically to a high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units. Background Technology

[0002] Existing building ventilation systems employ filtration systems including: non-woven fabric filtration systems, electrostatic electret filtration systems, and systems equipped with electrostatic precipitators or negative ion dust removal.

[0003] Non-woven fabric filtration systems typically employ a combination of pre-filters, medium-efficiency filters, and high-efficiency filters. These are arranged sequentially along the airflow direction. Pre-filters and medium-efficiency filters are effective at filtering medium and large particles, while high-efficiency filters are effective at filtering small particles. However, due to their dense structure and small pores, although the filtration efficiency is high, the filtration resistance is relatively high, resulting in limited dust holding capacity and requiring frequent replacement, leading to high energy consumption and costs. Furthermore, they only intercept microorganisms without killing them, easily causing secondary pollution. Ultraviolet lamps are often used to kill bacteria in these systems.

[0004] Electrostatic electret filters are made of dielectric materials capable of storing space charge and dipole charge for extended periods. Besides their general mechanical filtration function, they utilize the Coulomb force generated by their own charge to capture dust, significantly improving the capture of fine particles. They also capture, inhibit, and kill microorganisms. Compared to high-efficiency filters, electrostatic electret filters offer improved filtration efficiency with lower filtration resistance and increased dust holding capacity. However, they suffer from charge loss and dissipation, leading to a decrease in filtration efficiency over time and increased filter replacement cycles. While charging modules can be added, this also increases the complexity of the equipment and maintenance costs. They are generally used in conjunction with non-woven fabric filtration systems.

[0005] Electrostatic precipitators ionize gas to generate positive and negative ions. Dust particles capture the negative ions and migrate towards the positive electrode under the influence of the electric field. They have good removal efficiency for fine particulate matter and low resistance. However, their structure is complex, management and maintenance are relatively complicated, and they are greatly affected by environmental factors such as temperature and humidity. They also have a sterilization function and are often used in conjunction with non-woven fabric filtration systems.

[0006] Negative ion dust removal utilizes the adsorption and settling effects of negative ions to purify the air. Its advantages include eliminating the need for filters, avoiding filter replacement and clogging issues, and providing a sterilization effect. However, artificially generated negative ions may produce byproducts such as ozone and nitrogen oxides, and its filtration efficiency is limited; therefore, it is often used in conjunction with filters.

[0007] Existing fresh air filtration systems cannot simultaneously optimize both filtration efficiency and air resistance, requiring the addition of a separate sterilization module to achieve sterilization functionality. This increases structural complexity and maintenance difficulty. Therefore, it is necessary to provide a high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units to solve the above problems. Summary of the Invention

[0008] The main objective of this invention is to provide a high-efficiency, low-resistance eagle-wing shaped active electrostatic assisted filter section for building fresh air units, in order to solve the problems existing in the prior art.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A high-efficiency, low-resistance eagle-wing type active electrostatic assisted building fresh air unit filter section includes a housing. Inside the housing, along the direction from the air inlet to the air outlet, there are sequentially fixed pre-drying, pre-filtration and negative ion integrated section, first pipe wall dust collection section, eagle-wing type high-voltage electrostatic filtration section, second pipe wall dust collection section and optional functional module. The pre-drying, pre-filtration and negative ion integrated section is located at the air inlet, and the optional functional module is located at the air outlet.

[0011] Furthermore, the pre-drying, pre-filtration, and negative ion integrated section includes a moisture collection mesh and a velvet matrix negative ion generator or a needle matrix negative ion generator connected to the moisture collection mesh.

[0012] Furthermore, the velvet matrix negative ion generator includes a folded conductive pre-filter and a velvet negative ion matrix assembly. The folded conductive pre-filter is connected to a grounding wire, and one side of it is connected to the velvet negative ion matrix assembly through an insulating support frame. The folded conductive pre-filter maintains a distance of at least 2 cm from the end of the velvet head. The velvet negative ion matrix assembly includes a velvet negative ion generating head, a velvet head support connecting wire, and a metal frame. The metal frame is connected to a negative high-voltage static power supply for supplying static electricity to the velvet negative ion generating head. Insulating bases are provided at the upper and lower ends of the metal frame.

[0013] The needle-type matrix negative ion generator has a pleated or flat metal pre-filter on its windward side, a matrix of needle-type negative ion generating heads in the middle, and a metal perforated plate at the rear end; the metal pre-filter and the metal perforated plate are grounded through a grounding wire; the needle-type negative ion generating heads are connected to a positive high-voltage static power supply, and the needle tips are located at the center of the holes in the metal perforated plate; the needle-type negative ion generating heads and the edges of the holes in the metal perforated plate are kept at least 2 cm apart.

[0014] Furthermore, the moisture collection net is composed of one or both of the following: moisture collection fiber felt or moisture collection woven mesh fabric.

[0015] Furthermore, the shell portion corresponding to the first pipe wall dust collection section is formed by assembling large and small pieces. Dust collection core material is connected to the pipe wall formed by the large and small pieces through an inner frame. A grounding ring is connected to the large or small pieces. The structure of the second pipe wall dust collection section is the same as that of the first pipe wall dust collection section.

[0016] Furthermore, the eagle-wing type high-voltage electrostatic filter section includes an insulating side groove frame and an eagle-wing type metal frame component. The insulating side groove frame is set close to the inner wall of the shell. The eagle-wing type metal frame component is provided with ultra-loose three-dimensional filter material inside. The insulating side groove frame is provided with a groove structure. The eagle-wing type metal frame component is connected to the insulating side groove frame through the groove structure.

[0017] Furthermore, the insulating side groove frame includes two oppositely arranged insulating side plates, and two grooves are provided on the opposite side walls of the two insulating side plates. The upper groove is the first groove, and the lower groove is the second groove. The eagle wing-shaped metal frame component is connected to the first groove and the second groove.

[0018] Furthermore, a spring is embedded in the upper surface of the first groove, and a positive high-voltage power supply access copper conductor is embedded in the lower surface of the first groove. A grounding copper conductor is embedded in the lower surface of the second groove. A main high-voltage line channel and multiple high-voltage power supply channels are provided on the side wall of the insulating side plate near the housing. The positive high-voltage power supply access copper conductor is connected to the main high-voltage line channel through the multiple high-voltage power supply channels. The high-voltage power supply channels penetrate the insulating side plate and correspond to the positions of the positive high-voltage power supply access copper conductor. The main high-voltage line channel is used to connect to a high-voltage power supply. A grounding wire channel is provided on the insulating side plate, and the grounding copper conductor is connected to the grounding wire inside the grounding wire channel.

[0019] Furthermore, the eagle-wing type metal frame component includes an insulating support plate and an eagle-wing metal mesh. Two insulating support plates and two eagle-wing metal meshes are provided. An eagle-wing metal mesh is connected to the upper and lower sides of the two insulating support plates respectively. The distance between the two eagle-wing metal meshes is 1-25mm. The two ends of the upper eagle-wing metal mesh are respectively connected to two first grooves, and the two ends of the lower eagle-wing metal mesh are respectively connected to two second grooves.

[0020] Furthermore, the optional functional modules include one or more of the following: a fragrance dispersion device, a humidification device, and a heating or cooling device.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Achieving both high filtration efficiency and low air resistance.

[0023] 2. To achieve efficient interception and elimination of microorganisms.

[0024] 3. Modular configuration enables multiple functions.

[0025] 4. The eagle wing-shaped high-voltage electrostatic filter section can be adapted to thicker filter media, and the eagle wing shape design can reduce the relative wind speed and improve the filtration efficiency.

[0026] The pre-drying, pre-filtration, and negative ion integrated section provides a high concentration of negative ions with a wide coverage area, promoting the sedimentation and adsorption of air pollutants and killing some pathogenic microorganisms. The first and second pipe wall dust collection sections are detachable and washable, increasing dust holding capacity. The eagle-wing type high-voltage electrostatic filtration section has ultra-loose three-dimensional filter material; applying high-voltage electrostatics can capture fine particulate matter, hold dust, and efficiently kill pathogenic microorganisms. Therefore, this invention has high filtration efficiency, achieving efficient interception and killing of microorganisms, and does not use a dense filter structure, resulting in low air resistance. Optional functional modules include one or more of a fragrance dispersion device, a humidification device, and a heating or cooling device. All sections work together to achieve functions beyond just efficient dust holding and filtration, sterilization, air purification, and humidification. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall filter section of a high-efficiency, low-resistance eagle-wing type active electrostatic assisted building fresh air unit according to the present invention.

[0028] Figure 2 This is a schematic diagram of the integrated pre-drying, pre-filtration, and negative ion section in this invention.

[0029] Figure 3 This is a schematic diagram of the first pipe wall dust collection section in this invention.

[0030] Figure 4 This is a front view of the insulating side plate in this invention.

[0031] Figure 5 This is a side view of the insulating side plate in this invention.

[0032] Figure 6 This is a rear view of the insulating side plate in this invention.

[0033] Figure 7 This is a schematic diagram of the eagle-wing-shaped metal frame component in this invention.

[0034] Figure 8 This is a schematic diagram of the needle-type matrix negative ion generator in this invention.

[0035] Among them, 1-pre-drying, pre-filtration and negative ion integrated section; 11-air inlet; 12-air outlet; 13-shell; 101-moisture collection screen; 102-fluffy negative ion matrix assembly; 103-folded conductive pre-filter; 104-metal frame; 105-grounding wire; 106-insulating support frame; 107-high voltage static power supply; 108-fluffy matrix negative ion generator; 109-insulating base; 110-metal pre-filter; 111-needle matrix negative ion generator; 112-needle negative ion generator head; 113-metal perforated plate; 2 - First pipe wall dust collection section; 201-Large panel group; 202-Small panel group; 203-Dust collection core material; 204-Inner frame; 205-Grounding ring; 3-Eagle wing type high-voltage electrostatic filter section; 301-Insulating side groove frame; 302-Eagle wing type metal frame component; 303-Insulating support plate; 304-Eagle wing metal mesh; 305-High voltage power line channel; 306-Spring; 307-Positive high voltage power supply access copper conductor; 308-Grounding copper conductor; 309-Grounding wire channel; 4-Second pipe wall dust collection section; 5-Optional functional module. Detailed Implementation

[0036] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] Combination Figure 1-8 This invention provides a high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units, including a housing 13. The housing 13 is made of insulating material. Inside the housing 13, along the direction from the air inlet 11 to the air outlet 12, there are sequentially fixed pre-drying, pre-filtration and negative ion integrated section 1, a first pipe wall dust collection section 2, an eagle-wing type high-voltage electrostatic filter section 3, a second pipe wall dust collection section 4, and an optional functional module 5. The pre-drying, pre-filtration and negative ion integrated section 1 is located at the air inlet 11, and the optional functional module 5 is located at the air outlet 12.

[0039] The pre-drying, pre-filtration and negative ion integrated section 1 is placed at the front end of the fresh air unit duct and is used for filtering large particles and releasing negative ions. It includes a moisture collection mesh 101 and a velvet matrix negative ion generator 108 or a needle matrix negative ion generator 111 connected to the moisture collection mesh 101.

[0040] The moisture collection net 101 is used to reduce air humidity and protect the negative ion generator to operate normally and stably. The folded conductive pre-filter component works in conjunction with the fluffy matrix negative ion generator 108 or the needle matrix negative ion generator 111 to provide high concentration and wide coverage of negative ions, promote the sedimentation and adsorption of air pollutants, and kill some pathogenic microorganisms.

[0041] The velvet matrix negative ion generator 108 includes a folded conductive pre-filter 103 and a velvet negative ion matrix assembly 102. The folded conductive pre-filter 103 is connected to a grounding wire 105, and one side of it is connected to the velvet negative ion matrix assembly 102 through an insulating support frame 106. The folded conductive pre-filter 103 maintains a distance of at least 2 cm from the end of the velvet head. The velvet negative ion matrix assembly 102 includes a velvet negative ion generator head 1021, a velvet head support connecting wire 1022, and a metal frame 104. The metal frame 104 is connected to a negative high voltage static power supply 107 for supplying static electricity to the velvet negative ion generator head 1021. Insulating bases 109 are provided at the upper and lower ends of the metal frame.

[0042] The needle-type matrix negative ion generator 111 has a pleated or flat metal pre-filter 110 on its windward side, a matrix of needle-type negative ion generating heads 112 in the middle, and a metal perforated plate 113 at the rear end; the metal pre-filter 110 and the metal perforated plate 113 are grounded through a grounding wire 105; the needle-type negative ion generating head 112 is connected to a positive high-voltage static power supply 107, and the needle tip is located at the center of the hole on the metal perforated plate 113; the needle-type negative ion generating head 112 and the edge of the hole in the metal perforated plate 113 are kept at least 2 cm apart.

[0043] The moisture collection net 101 is composed of one or two of moisture collection fiber felt or moisture collection woven mesh fabric. In this embodiment, the moisture collection net 101 is made of moisture collection fiber felt.

[0044] The housing 13 portion corresponding to the first pipe wall dust collection section 2 is formed by assembling a large piece group 201 and a small piece group 202. The integrated housing 13 portion is easy to disassemble and clean or maintain the internal structure. A dust collection core material 203 is connected to the pipe wall formed by the large piece group 201 and the small piece group 202 through an inner frame 204. A grounding ring 205 is connected to the large piece group 201 or the small piece group 202. The structure of the second pipe wall dust collection section 4 is the same as the structure of the first pipe wall dust collection section 2.

[0045] The first pipe wall dust collection section 2 and the second pipe wall dust collection section 4 have dust collection core materials attached to the pipe wall, which are used to adsorb and contain some of the dust in the dusty air. They are placed on both sides of the eagle wing-shaped high-voltage electrostatic filter section 3 of the fresh air unit. They can be disassembled and cleaned to increase the dust holding capacity. The dust collection core material can be a wavy sponge pad.

[0046] The eagle-wing type high-voltage electrostatic filtration section 3 is an eagle-wing active electrostatic air purification zone, including an insulating side groove frame 301 and an eagle-wing type metal frame component 302. The insulating side groove frame 301 is set close to the inner wall of the housing 13, and the insulating side groove frame 301 and the housing 13 can be sealed with rubber. The eagle-wing type metal frame component 302 is provided with ultra-loose three-dimensional filter material inside. The insulating side groove frame 301 is provided with a groove structure, and the eagle-wing type metal frame component 302 is connected to the insulating side groove frame 301 through the groove structure.

[0047] The insulating side groove frame 301 includes two oppositely arranged insulating side plates. Each of the two insulating side plates has two grooves on its opposite sidewalls. The upper groove is the first groove, and the lower groove is the second groove. The eagle wing-shaped metal frame component 302 is connected to the first groove and the second groove.

[0048] A spring 306 is embedded in the upper surface of the first groove, which is used to fix the insulating side groove frame 301. A positive high-voltage power supply access copper conductor 307 is embedded in the lower surface of the first groove, and a grounding copper conductor 308 is embedded in the lower surface of the second groove. A main high-voltage line channel and multiple high-voltage power supply line channels 305 are provided on the side wall of the insulating side plate near the housing. The positive high-voltage power supply access copper conductor 307 is connected to the main high-voltage line channel through the multiple high-voltage power supply line channels 305. 5. The high-voltage power line channel 305 corresponds to the positive high-voltage power supply access copper conductor 307 through the insulating side plate. The main high-voltage line channel is used to connect to the high-voltage power supply. In this embodiment, the setting of the main high-voltage line channel facilitates the connection of high-voltage power to multiple high-voltage power line channels 305 and reduces the occurrence of arc discharge in spinning. A grounding wire channel 309 is provided on the insulating side plate. The grounding copper conductor 308 is connected to the grounding wire inside the grounding wire channel 309. The grounding channel 309 does not penetrate the insulating side plate.

[0049] The eagle-wing type metal frame component 302 includes an insulating support plate 303 and an eagle-wing metal mesh 304. Two of each of the insulating support plate 303 and the eagle-wing metal mesh 304 are provided. An eagle-wing metal mesh 304 is connected to the upper and lower sides of the two insulating support plates 303 respectively. The two ends of the upper eagle-wing metal mesh 304 are respectively connected to two first grooves, and the two ends of the lower eagle-wing metal mesh 304 are respectively connected to two second grooves.

[0050] In this embodiment, the eagle wing metal mesh 304 is provided with power supply ears on both sides; the power supply ears at both ends of the eagle wing metal mesh 304 on the upper side can be inserted into the first groove of the insulating side groove frame 301 and connected to the high voltage static power supply; the power supply ears at both ends of the eagle wing metal mesh 304 on the lower side can be inserted into the second groove of the insulating side groove frame 301 and grounded.

[0051] The insulating side groove frame 301 can be connected to several eagle wing-shaped metal frame components 302, preferably 1-4. The positive high voltage power supply connected to the different eagle wing-shaped metal frame components 302 in the first groove is separated by the copper conductor 307. The high voltage power supply is connected to the copper conductor 307 through multiple separated positive high voltage power supplies by wires. The grounding copper conductor 308 in the second groove is connected to the ground wire through the grounding wire channel 309, so that an electric field is formed in the eagle wing-shaped metal frame component 302.

[0052] The optional functional module 5 includes one or more of the following: fragrance dispersion device, humidification device, heating or cooling device, and the specific function can be selected according to the user's actual needs.

[0053] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A high-efficiency, low-resistance, eagle-wing-shaped active electrostatic assisted filter section for building fresh air units, characterized in that, The housing (13) includes a pre-drying, pre-filtration and negative ion integrated section (1), a first pipe wall dust collection section (2), an eagle wing type high-voltage electrostatic filter section (3), and a second pipe wall dust collection section, which are sequentially fixedly arranged inside the housing (13) along the direction from the air inlet (11) to the air outlet (12). (4) and optional functional module (5), wherein the pre-drying, pre-filtration and negative ion integrated section (1) is located at the air inlet (11) and the optional functional module (5) is located at the air outlet (12); The eagle-wing type high-voltage electrostatic filter section (3) includes an insulating side groove frame (301) and an eagle-wing type metal frame component (302). The insulating side groove frame (301) is set close to the inner wall of the shell (13). The eagle-wing type metal frame component (302) is provided with ultra-loose three-dimensional filter material. The insulating side groove frame (301) is provided with a groove structure. The eagle-wing type metal frame component (302) is connected to the insulating side groove frame (301) through the groove structure. The insulating side groove frame (301) includes two oppositely arranged insulating side plates. Two grooves are provided on the opposite side walls of the two insulating side plates. The upper groove is the first groove and the lower groove is the second groove. The eagle wing-shaped metal frame component (302) is connected to the first groove and the second groove. A spring sheet (306) is embedded on the upper surface of the first groove, and a positive high-voltage power supply access copper conductor (307) is embedded on the lower surface of the first groove. A grounding copper conductor (308) is embedded on the lower surface of the second groove. A main high-voltage line channel and multiple high-voltage power supply line channels (305) are provided on the side wall of the insulating side plate near the housing. The positive high-voltage power supply access copper conductor (307) is connected to the main high-voltage line channel through the multiple high-voltage power supply line channels (305). The high-voltage power supply line channel (305) penetrates the insulating side plate. The high-voltage power supply line channel (305) corresponds to the positive high-voltage power supply access copper conductor (307). The main high-voltage line channel is used to connect to the high-voltage power supply. A grounding wire channel (309) is provided on the insulating side plate. The grounding copper conductor (308) is connected to the grounding wire inside the grounding wire channel (309).

2. The high-efficiency, low-resistance eagle-wing shaped active electrostatic assisted filter section for building fresh air units as described in claim 1, characterized in that, The pre-drying, pre-filtration and negative ion integrated section (1) includes a moisture collection net (101) and a velvet matrix negative ion generator (108) or a needle matrix negative ion generator (111) connected to the moisture collection net (101).

3. The high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units as described in claim 2, characterized in that, The velvet matrix negative ion generator (108) includes a folded conductive pre-filter (103) and a velvet negative ion matrix assembly (102). The folded conductive pre-filter (103) is connected to a grounding wire (105), and one side of it is connected to the velvet negative ion matrix assembly (102) through an insulating support frame (106). The folded conductive pre-filter (103) maintains a distance of at least 2 cm from the end of the velvet head. The velvet negative ion matrix assembly (102) includes a velvet negative ion generator head (1021), a velvet head support connecting wire (1022), and a metal frame (104). The metal frame (104) is connected to a negative high voltage static power supply (107) for supplying power to the velvet negative ion generator head (1021). 1) The electrostatic supply is provided, and the upper and lower ends of the metal frame are provided with insulating bases (109); the needle-type matrix negative ion generator (111) is provided with a pleated or flat metal pre-filter (110) on the windward side, and a matrix arrangement of needle-type negative ion generator heads (112) is provided in the middle, and a metal perforated plate (113) is provided at the rear end; the metal pre-filter (110) and the metal perforated plate (113) are grounded through a grounding wire (105); the needle-type negative ion generator head (112) is connected to a positive high voltage static power supply (107), and the needle tip is located at the center of the hole on the metal perforated plate (113); the needle-type negative ion generator head (112) and the edge of the hole on the metal perforated plate (113) maintain a distance of at least 2cm.

4. The high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units as described in claim 2, characterized in that, The moisture collection net (101) is composed of one or both of the following: moisture collection fiber felt or moisture collection woven mesh fabric.

5. The high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units as described in claim 1, characterized in that, The shell (13) part corresponding to the first pipe wall dust collection section (2) is formed by assembling a large piece group (201) and a small piece group (202). The pipe wall formed by the large piece group (201) and the small piece group (202) is connected to a dust collection core material (203) through an inner frame (204). A grounding ring (205) is connected to the large piece group (201) or the small piece group (202). The structure of the second pipe wall dust collection section (4) is the same as that of the first pipe wall dust collection section (2).

6. The high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units as described in claim 1, characterized in that, The eagle-wing type metal frame component (302) includes an insulating support plate (303) and an eagle-wing metal mesh (304). There are two of each of the insulating support plate (303) and the eagle-wing metal mesh (304). The upper and lower sides of the two insulating support plates (303) are respectively connected to one of the eagle-wing metal meshes (304). The distance between the two eagle-wing metal meshes (304) is 1-25mm. The two ends of the upper eagle-wing metal mesh (304) are respectively connected to two first grooves, and the two ends of the lower eagle-wing metal mesh (304) are respectively connected to two second grooves.

7. The high-efficiency, low-resistance eagle-wing type active electrostatic assisted filter section for building fresh air units as described in claim 1, characterized in that, The optional functional module (5) includes one or more of the following: fragrance dispersion device, humidification device, heating or cooling device.

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