Integrated air filter

Abstract

The utility model discloses an integrated air filter, which relates to the technical field of air filtration and comprises a protective net assembly and a filter element assembly. Gas can pass through the protection net assembly, the protection net assembly comprises an inlet protection net, a separation protection net and an outlet protection net, the inlet protection net, the separation protection net and the outlet protection net are sequentially arranged in parallel, and gas flows in from the inlet protection net and flows out from the outlet protection net; the filter element assembly comprises a chemical filter element and a dust filter element, the chemical filter element is arranged between the inlet protection net and the separation protection net, the dust filter element is arranged between the separation protection net and the outlet protection net, and the chemical filter element and the dust filter element are arranged in a V-shaped folding mode. VOCs, acid gas or alkaline gas can be removed through the chemical filter element, the fine dust particulate matter filtering effect grade of the dust filter element can reach the high grade, and fine dust particulate matter in air can be efficiently removed. The filter element assembly is made of the multi-V-shaped folding filter material, so that the filter area in unit volume is increased, and the filter efficiency of the air filter is improved.

Description

Technical Field

[0001] This application relates to the technical field of air filtration, and particularly to an integrated air filter. Background Art

[0002] Air filters are widely used in occasions such as air conditioning systems and purification workshops that require air purification, and play an important role in improving air quality. Features such as high-efficiency filtration function, long service life, and easy maintenance have become the focus of market attention.

[0003] At present, air treatment filters on the market are divided into two types: dust air filters and chemical filters. Dust air filters mainly deal with dust pollution in the air and remove particulate pollutants in the air; chemical filters mainly remove gaseous pollutants in the air. These two types of filters are generally used separately, in the form of single-piece air filters or single-piece chemical filters. The corresponding usage method of single-piece filters is generally to use them by stacking single pieces. When such single-piece filters are stacked, the product thickness is very thick, and they cannot be used in some places with insufficient space; there are also gaps between each single piece when stacked, and there is a risk of air leakage in the air suction negative pressure system, and the filtration efficiency cannot be guaranteed. Especially for some equipment operating in high-end clean rooms, the space in the air inlet filtration section is limited and the filtration efficiency requirements are extremely high. For such high-requirement equipment or process treatment facilities, instrumentation equipment, etc., a better integrated filter is needed. Summary of the Invention

[0004] The purpose of this application is to provide an integrated air filter to solve the problem that the filtration efficiency cannot be guaranteed when different types of single-piece filters are stacked and used.

[0005] An integrated air filter provided by this application adopts the following technical solution:

[0006] An integrated air filter includes:

[0007] A guard net assembly that can pass gas, including an inlet guard net, a partition guard net, and an outlet guard net. The inlet guard net, the partition guard net, and the outlet guard net are placed parallel to each other in sequence. Airflow flows in from the inlet guard net and flows out from the outlet guard net;

[0008] A filter element assembly, including a chemical filter element and a dust filter element. The chemical filter element is arranged between the inlet guard net and the partition guard net, and the dust filter element is arranged between the partition guard net and the outlet guard net. Both the chemical filter element and the dust filter element are arranged in a V-shaped fold.

[0009] By adopting the above technical solutions, the chemical filter element can remove VOCs, acidic gases or alkaline gases, so as to achieve the purpose of removing gaseous pollutants of the AMC (collective term for VOCs, acidic and alkaline gases) type. In a low-level clean room, particulate matter in the air also needs to be purified. The filtering effect level of the dust filter element for fine dust particulate matter can reach a relatively high level, and it can efficiently remove fine dust particulate matter in the air. The chemical filter element is arranged upstream of the gas flow direction, so that the dust generated during the operation of the chemical filter element can be removed by the dust filter element, ensuring the filtering effect of the air filter. The filter element assembly arranged in a V-shaped fold can increase the filtering area per unit volume, thereby improving the filtering efficiency of the air filter.

[0010] Optionally, the air filter further includes an outer frame assembly, and the guard net assembly and the filter element assembly are installed in the outer frame assembly.

[0011] By adopting the above technical solutions, the outer frame assembly is used to fix the guard net assembly and the filter element assembly, so that the air filter can remain stable during operation.

[0012] Optionally, a first sealing strip is provided on the side of the chemical filter element, and a second sealing strip is provided on the side of the dust filter element.

[0013] By adopting the above technical solutions, the first sealing strip and the second sealing strip can ensure the sealing performance between the filter element assembly and the guard net assembly, which is beneficial to improving the filtering effect of the air filter.

[0014] Optionally, the distance between the inlet guard net and the partition guard net is greater than the distance between the partition guard net and the outlet guard net.

[0015] By adopting the above technical solutions, the filling range of the chemical filter element is greater than the filling range of the dust filter element, so that the air flows through the chemical filter element for a longer time. Since the adsorption process of the chemical filter element requires a relatively long time, by increasing the filling range and prolonging the absorption time, the filtering performance is ensured.

[0016] Optionally, the distance between the inlet guard net and the partition guard net is between 70 - 80 mm, and the distance between the partition guard net and the outlet guard net is between 40 - 50 mm.

[0017] By adopting the above technical solutions, filling the chemical filter element and the dust filter element within this range can fully perform chemical adsorption and physical adsorption, which is beneficial to ensuring the filtering performance of the air filter.

[0018] Optionally, a serrated piece is provided on the side of the outer frame assembly in contact with the filter element assembly. The serrated piece corresponds to the V-shaped fold of the filter element assembly, and a sealant space is formed between the serrated piece and the side wall of the outer frame assembly.

[0019] By adopting the above technical solution, since the filter element assembly is in a V-shaped folded state, the contact with the filter element assembly on the upper and lower sides of the outer frame assembly is also in a V-shaped fold. This contact form makes the operation of sealing between the two difficult. Therefore, by providing serrated sheets, the filter element assembly is clamped by the serrated sheets on the upper and lower sides, and a sealing glue space is left between the serrated sheets and the side wall for pouring sealing glue for sealing, making the fixing of the filter element assembly more stable and the sealing effect better, and improving the filtering performance of the filter.

[0020] Optionally, the outer frame assembly is provided with a sliding groove, and the serrated sheet slides in the sliding groove.

[0021] By adopting the above technical solution, the sliding groove can allow the serrated sheet to slide out of the outer frame assembly. After the serrated sheet can form an installation with the V-shaped folded filter element assembly outside the outer frame assembly, the filter element assembly can be installed into the outer frame assembly together through the sliding groove. When removing the filter element assembly, the serrated sheet can also drive the filter element assembly to be taken out of the outer frame assembly through the sliding groove, making the installation and removal of the filter element assembly more convenient.

[0022] Optionally, a sealing plate is provided on the outer side of the outer frame assembly, and the sealing plate corresponds to the sealing glue space.

[0023] By adopting the above technical solution, after the sealing plate is opened, sealing glue can be added into the sealing glue space after the installation of the filter element assembly is completed, so as to seal the filter element assembly and the serrated sheet together on both sides of the outer frame assembly, improving the filtering performance of the air filter.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The chemical filter element can remove VOCs, acidic gases or alkaline gases, so as to achieve the purpose of removing gaseous pollutants such as AMC (the general term for VOCs, acidic, and alkaline gases). In a low-level clean room, the air also needs to be purified of particulate matter. The filtering effect level of the dust filter element for fine dust particulate matter can reach a higher level, and it can efficiently remove fine dust particulate matter in the air. The chemical filter element is arranged upstream of the gas flow direction, so that the dust generated during the operation of the chemical filter element can be removed by the dust filter element, ensuring the filtering effect of the air filter. The filter element assembly arranged in a V-shaped fold can increase the filtering area per unit volume, thereby improving the filtering efficiency of the air filter;

[0026] 2. Since the filter element assembly is in a V-shaped folded state, the contact with the filter element assembly on the upper and lower sides of the outer frame assembly is also in a V-shaped fold. This contact form makes the operation of sealing between the two difficult. Therefore, by providing serrated blades, the filter element assembly is clamped by the serrated blades on the upper and lower sides, and a sealant space is left between the serrated blades and the side wall for sealant to be poured in for sealing, making the fixation of the filter element assembly more stable and the sealing effect better, thereby improving the filtering performance of the filter. Brief Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 is a schematic cross-sectional structure diagram of the first perspective of an embodiment of the present application;

[0029] Figure 3 is a schematic cross-sectional structure diagram of the second perspective of an embodiment of the present application;

[0030] Figure 4 is a schematic cross-sectional structure diagram of the third perspective of an embodiment of the present application;

[0031] Figure 5 is a schematic cross-sectional structure diagram of the fourth perspective of an embodiment of the present application.

[0032] Reference Numerals: 1, guard net assembly; 11, inlet guard net; 12, partition guard net; 13, outlet guard net; 2, filter element assembly; 21, chemical filter element; 22, dust filter element; 23, first sealing strip; 24, second sealing strip; 3, outer frame assembly; 31, serrated blade; 32, sealant space; 33, sliding groove; 34, sealing plate. Detailed Description of the Embodiment

[0033] The following will further describe the present application in detail with reference to the accompanying drawings.

[0034] An integrated air filter, refer to Figures 1 to 3, including a guard net assembly 1, a filter element assembly 2 and a frame assembly 3. The guard net assembly 1 includes an inlet guard net 11, a partition guard net 12 and an outlet guard net 13. The inlet guard net 11, the partition guard net 12 and the outlet guard net 13 are sequentially and parallelly installed in the frame assembly 3, and the air flow flows in from the inlet guard net 11 and flows out from the outlet guard net 13; the filter element assembly 2 includes a chemical filter element 21 and a dust filter element 22. The chemical filter element 21 is arranged between the inlet guard net 11 and the partition guard net 12, and the dust filter element 22 is arranged between the partition guard net 12 and the outlet guard net 13. The chemical filter element 21 and the dust filter element 22 are both arranged in a V-shaped fold. The V-shaped fold can increase the filtration area per unit volume, thereby improving the filtration efficiency of the air filter. Among them, the distance between the inlet guard net 11 and the partition guard net 12 is set within the range of 70 mm - 80 mm, and the distance between the partition guard net 12 and the outlet guard net 13 is set within the range of 40 mm - 50 mm, so as to have a longer contact time for the chemical filter element 21 to fully adsorb chemical substances in the gas and ensure the air purification quality; while the shorter distance ensures the smooth flow of the air flow through the dust filter element 22, reduces the flow resistance, and takes into account the filtration efficiency of the chemical filter element 21 and the dust filter element 22. The chemical filter element 21 is arranged upstream of the gas flow direction, so that the dust generated during the operation of the chemical filter element 21 can be removed by the dust filter element 22, ensuring the filtration effect of the air filter.

[0035] The chemical filter element 21 can remove AMC (a general term for VOCs, acidic, and alkaline gases) gaseous pollutants, and the initial removal efficiency of removing AMC is as high as over 99%. The chemical filter element 21 is arranged in a V-shaped fold, increasing the surface area of the filter material, thereby being able to accommodate more adsorption materials and improving the adsorption efficiency.

[0036] The filtration efficiency of the dust filter element 22 is relatively high. Usually, only an ultra-high efficiency level filter can meet the requirements. The ultra-high efficiency filter uses a PTFE (Poly tetra fluoroethylene, a kind of membrane material) material, and the filtration effect grade of the filter membrane for fine dust particles can reach U17 (reference standard EN 1822-1-2009 High Efficiency Air Filters (EPA, HEPA and ULPA) - Part 1: Classification, Performance Testing, Marking). The efficiency for particles of 0.1 μm is ≥ 99.999995%, which can efficiently remove fine dust particles in the air. Similarly, the dust filter element 22 is also arranged in a V-shaped fold, increasing the filter material area and improving the filtration efficiency.

[0037] Refer to Figure 4 and 5, a first sealing strip 23 is provided on the straight side of the chemical filter element 21, and a second sealing strip 24 is provided on the straight side of the dust filter element 22. Both the first sealing strip 23 and the second sealing strip 24 are connected to the filter element assembly 2 and the outer frame assembly 3, which can improve the sealing performance of the air filter, enable the gas to pass through the filter element assembly 2 through the air filter, and thus improve the filtering effect of the air filter.

[0038] Refer to Figure 4 and 5 , on the side of the outer frame assembly 3 in contact with the V-shaped folded side of the filter element assembly 2, a serrated piece 31 is provided. The serrated piece 31 corresponds to the V-shaped folding of the filter element assembly 2, can clamp the filter element assembly 2 on both sides of the filter element assembly 2, and form a sealant space 32 between the side and the side wall of the outer frame assembly 3. When sealing the filter element assembly 2, by adding sealant to the sealant space 32, the sealant can form a seal between the serrated piece 31 and the filter element assembly 2, so that stable sealing effects can be achieved on the upper and lower sides of the filter element assembly 2. Through this cooperative design, the effective utilization of the internal space of the filter is realized, and at the same time, the stability of the filter element is enhanced.

[0039] Refer to Figure 4 and 5 , the outer frame assembly 3 is provided with a sliding groove 33, and the serrated piece 31 can slide in the sliding groove 33 and play a role in supporting the serrated piece 31. When the filter element needs to be disassembled and assembled, only the locking device of the sliding groove 33 needs to be loosened, and the serrated piece 31 can slide in the sliding groove 33, which is convenient for the insertion and removal of the filter element. This mechanism makes the replacement of the filter element simple and fast, and improves the use efficiency.

[0040] Refer to Figure 4 , a sealing plate 34 is provided on the outside of the outer frame assembly 3. The sealing plate 34 can be opened to expose the sealant space 32. By opening the sealing plate 34 and injecting sealant into the sealant space 32, the filter element assembly 2 and the serrated plate are sealed with the sealant, so that the filter element assembly 2 is fixed on the upper and lower sides.

[0041] The implementation principle of the embodiment of this application is as follows: The sequentially arranged chemical filter element 21 and dust filter element 22 can efficiently remove AMC and dust particles, thereby improving the filtering performance and application range of the air filter. By adding the design of the outer frame assembly 3, the structural stability and safety of the filter element assembly 2 can be effectively improved. The outer frame assembly 3 not only provides a supporting and protective function, but also realizes the quick disassembly and assembly and stable installation of the filter element assembly 2 in cooperation with the design of the serrated piece 31 and the sliding groove 33. And the sealing plate 34 can provide a space for applying sealant, ensuring the sealing performance between the filter element assembly 2 and the serrated piece 31, thereby further improving the reliability and efficiency of the entire filtering system.

[0042] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An integrated air filter, characterized in that, Comprising: A guard net assembly (1) capable of passing gas, including an inlet guard net (11), a partition guard net (12) and an outlet guard net (13), the inlet guard net, the partition guard net (12) and the outlet guard net (13) are placed in parallel in sequence, and air flow flows in from the inlet guard net (11) and flows out from the outlet guard net (13); A filter element assembly (2), including a chemical filter element (21) and a dust filter element (22), the chemical filter element (21) is arranged between the inlet guard net (11) and the partition guard net (12), the dust filter element (22) is arranged between the partition guard net (12) and the outlet guard net (13), and both the chemical filter element (21) and the dust filter element (22) are arranged in a V-shaped folded manner.

2. The one-piece air filter according to claim 1, characterized in that, It further includes an outer frame assembly (3), and the guard net assembly (1) and the filter element assembly (2) are installed in the outer frame assembly (3).

3. An integrated air filter according to claim 1, characterized in that, A first sealing strip (23) is provided on the side of the chemical filter element (21), and a second sealing strip (24) is provided on the side of the dust filter element (22).

4. The integrated air filter according to claim 1, characterized in that, The distance between the inlet guard net (11) and the partition guard net (12) is greater than the distance between the partition guard net (12) and the outlet guard net (13).

5. An integrated air filter according to claim 4, characterized in that, The distance between the inlet guard net (11) and the partition guard net (12) is between 70 - 80 mm, and the distance between the partition guard net (12) and the outlet guard net (13) is between 40 - 50 mm.

6. The integrated air filter according to claim 2, wherein, Jagged pieces (31) are provided on the side surface of the outer frame assembly (3) in contact with the filter element assembly (2), the jagged pieces (31) correspond to the V-shaped folding of the filter element assembly (2), and a sealant space (32) is formed between the jagged pieces (31) and the side wall of the outer frame assembly (3).

7. An integrated air filter according to claim 6, characterized in that, The outer frame assembly (3) is provided with a sliding groove (33), and the jagged pieces (31) slide in the sliding groove (33).

8. The integrated air filter according to claim 6, wherein, A sealing plate (34) is provided on the outside of the outer frame assembly (3), and the sealing plate (34) corresponds to the sealant space (32).

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