Composite filter for indoor air purification

Abstract

The utility model discloses a kind of composite filters for indoor air purification, belong to air filtration technical field, including main body frame, fixedly connected with the positioning frame of main body frame rear side and detachably mounted in the protective cover of main body frame front side, constitute closed filter chamber by main body frame and protective cover, composite filter cartridge is placed in filter chamber and is connected with the air inlet and air outlet pipe of filter chamber;Its core improvement is in that: positioning frame and main body frame are connected with the support plate of keeping the distance between the two, air inlet is set on main body frame outside wall and faces wall, air outlet pipe is connected on main body frame and extends into wall inside.The composite filter for indoor air purification is hidden by setting air inlet to wall surface, reduce the probability of mosquito entering from air inlet, can also improve filtering efficiency, enhance aesthetic property.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, specifically a composite filter for indoor air purification. Background Technology

[0002] With increasing attention being paid to indoor air quality in factories, the application of indoor air purification equipment (such as air filters and fresh air systems) is becoming more and more widespread. In existing technologies, the air inlet of indoor air purification equipment is usually directly exposed to the indoor or outdoor environment, which has the following drawbacks: the problem of mosquito intrusion. Since the air inlet faces the outside directly, the exposed air inlet easily attracts mosquitoes to enter the equipment. The dead mosquitoes or their excrement may clog the filter components (such as filter screens), resulting in a decrease in filtration efficiency, and even causing odors or microbial growth. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a composite filter for indoor air purification with a hidden air inlet. By hiding the air inlet facing the wall, the probability of mosquitoes entering through the air inlet is reduced, and the filtration efficiency is improved and the aesthetics are enhanced.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A composite filter for indoor air purification includes a main frame, a positioning frame fixedly connected to the rear side of the main frame, a protective cover detachably installed on the front side of the main frame, a sealed filter chamber formed by the main frame and the protective cover, a composite filter cartridge placed in the filter chamber, and an air inlet and an air outlet pipe connecting the filter chamber. The core improvement is that a support plate is connected between the positioning frame and the main frame to maintain the distance between them, the air inlet is opened on the main frame located outside the wall and facing the wall, and the air outlet pipe is connected to the main frame and extends into the wall.

[0006] By adopting the above solution, the air inlet of the composite filter for indoor air purification is located on the part of the main frame outside the wall and faces the wall. When the filter is installed on the wall, the air inlet is blocked and hidden, making it difficult for mosquitoes to find the location of the air inlet, greatly reducing the probability of mosquitoes entering the filter chamber, avoiding the problem of reduced efficiency caused by mosquitoes clogging or contaminating the filter components, and the appearance is cleaner.

[0007] As a preferred embodiment of a composite filter for indoor air purification, multiple air inlets are provided to increase air intake efficiency, and all air inlets are distributed in a circumferential array along the main frame; wherein, the number of support plates is equal to the number of air inlets, and each support plate is located between two adjacent air inlets to increase the overall support stability.

[0008] As a preferred embodiment of a composite filter for indoor air purification, an air outlet pipe is provided, located at the center of the main frame and serving as the core of the positioning frame (i.e., the positioning frame is symmetrically distributed with the air outlet pipe as the center); wherein, the diameter of the opening of the air outlet pipe is larger than the diameter of the air inlet, which facilitates the airflow to converge from multiple air inlets and then be discharged through the air outlet pipe, thereby reducing flow resistance.

[0009] As a preferred embodiment of a composite filter for indoor air purification, a bracket is fixed in the center of the filter chamber. A screw extending out of the protective cover is connected to the bracket. A butterfly cap is threaded onto the screw to tighten and fix the protective cover. The protective cover can be quickly disassembled or installed by rotating the butterfly cap, which is convenient for maintaining the composite filter cartridge. The protective cover is made of visible PVC material, which makes it easy to observe the situation inside the filter chamber.

[0010] As a preferred embodiment of a composite filter for indoor air purification, the filter chamber is connected to a limiting tube that corresponds to and communicates with the air inlet. The composite filter cartridge is confined within a limiting frame formed by multiple limiting tubes. The limiting tubes guide and limit the composite filter cartridge, preventing it from shifting within the filter chamber and thus improving its reliability after installation.

[0011] As a preferred embodiment of a composite filter for indoor air purification, the composite filter cartridge includes an inner air filter and an outer insect filter. Air first passes through the outer insect filter to intercept insects, and then passes through the inner air filter to filter particulate matter. This dual filtration improves efficiency.

[0012] The beneficial effects of this utility model are:

[0013] 1. Concealed air intake reduces mosquito intrusion: The air intake is located on the part of the main frame outside the wall and faces the wall. When the filter is installed on the wall, the air intake is blocked and hidden, making it difficult for mosquitoes to find the location of the air intake. This greatly reduces the probability of mosquitoes entering the filter chamber and avoids the problem of reduced efficiency caused by mosquitoes clogging or contaminating the filter components. It also makes the appearance cleaner.

[0014] 2. Compact structure and efficient airflow organization: The air outlet is located at the center of the main frame and serves as the backbone of the positioning frame. The air inlets are distributed in a circumferential array. Combined with the support plate for the positioning frame, the overall structure is compact and the center of gravity is stable. The multi-inlet design increases the air intake area. Combined with the large-diameter air outlet, it reduces airflow resistance and improves air filtration efficiency.

[0015] 3. Easy maintenance: The protective cover can be detached and installed via screws and butterfly caps. The composite filter cartridge is fixed by limiting tubes. When it is necessary to replace or clean the filter components, simply rotate the butterfly caps to remove the protective cover and take out the composite filter cartridge directly. The operation is simple and efficient.

[0016] 4. Dual filtration protection: The composite filter cartridge adopts a double-layer structure of "mosquito filter + air filter". The outer mosquito filter can intercept large particles such as mosquitoes and hair, while the inner air filter further filters fine particles such as PM2.5 and dust, extending the service life of the air filter and avoiding secondary pollution caused by mosquito accumulation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structure for installing composite filters for indoor air purification behind walls. Figure 1 ;

[0019] Figure 2 A three-dimensional structure for installing composite filters for indoor air purification behind walls. Figure 2 ;

[0020] Figure 3 A three-dimensional structure for installing composite filters for indoor air purification behind walls. Figure 3 ;

[0021] Figure 4 Three-dimensional structure of composite filter for indoor air purification Figure 1 ;

[0022] Figure 5 Three-dimensional structure of composite filter for indoor air purification Figure 2 ;

[0023] Figure 6 To hide Figure 4 A three-dimensional structural diagram of the structure behind the protective shield;

[0024] Figure 7 To remove Figure 6 Three-dimensional structural diagram of the composite filter cartridge;

[0025] Figure 8 This is a three-dimensional structural diagram of the composite filter cartridge;

[0026] Figure 9 To hide Figure 8 A 3D structural diagram of the mosquito filter screen;

[0027] The markings in the diagram are: 1-Main frame; 2-Positioning frame; 3-Protective cover; 4-Filter chamber; 5-Composite filter cartridge; 6-Air inlet; 7-Air outlet pipe; 8-Support plate; 9-Wall; 10-Bracket; 11-Screw; 12-Butterfly cap; 13-Limiting tube; 14-Mosquito filter; 15-Air filter; 16-Exhaust fan. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 5 As shown, a composite filter for indoor air purification is provided, which is used for purifying air in a factory. Specifically, it includes a main frame 1, a positioning frame 2 fixedly connected to the rear side of the main frame 1, a protective cover 3 detachably installed on the front side of the main frame 1, a sealed filter chamber 4 formed by the main frame 1 and the protective cover 3, a composite filter cartridge 5 placed in the filter chamber 4, and an air inlet 6 and an air outlet 7 connecting the filter chamber 4. The core improvement is that a support plate 8 is connected between the positioning frame 2 and the main frame 1 to maintain the distance between the two, the air inlet 6 is opened on the main frame 1 located outside the wall 9 and facing the wall 9, the air outlet 7 is connected to the main frame 1 and extends into the wall 9, and the air outlet 7 is connected to the ventilation fan 16 installed in the wall 9. The air inlet 6 of this composite filter for indoor air purification is located outside the wall 9 of the main frame 1 and faces the wall 9. When the filter is installed on the wall 9, the air inlet 6 is blocked and hidden, making it difficult for mosquitoes to find the location of the air inlet 6, greatly reducing the probability of mosquitoes entering the filter chamber 4, avoiding the problem of reduced efficiency caused by mosquitoes clogging or contaminating the filter components, and making the appearance cleaner.

[0030] like Figure 5 As shown, there are multiple air inlets 6 (three in the figure) to increase air intake efficiency, and all air inlets 6 are distributed in a circumferential array along the main frame 1; the number of support plates 8 is equal to the number of air inlets 6, and each support plate 8 is located between two adjacent air inlets 6 to increase the overall support stability.

[0031] like Figure 5As shown, there is one air outlet pipe 7, which is located at the center of the main frame 1 and serves as the core of the positioning frame 2 (i.e., the positioning frame 2 is symmetrically distributed with the air outlet pipe 7 as the center). The diameter of the opening of the air outlet pipe 7 is larger than the diameter of the air inlet 6 (the diameter of the air inlet 6 is 6cm, and the diameter of the opening of the air outlet pipe 7 is 10cm), which facilitates the airflow to be discharged through the air outlet pipe 7 after the airflow is gathered from multiple air inlets 6, thereby reducing flow resistance.

[0032] like Figures 6 to 7 As shown, a bracket 10 is fixed in the center of the filter chamber 4. A screw 11 extending out of the protective cover 3 is connected to the bracket 10. A butterfly cap 12 is threaded onto the screw 11 to tighten and fix the protective cover 3. The protective cover 3 can be quickly removed or installed by rotating the butterfly cap 12. When the butterfly cap 12 is rotated clockwise, the protective cover 3 can be tightened and fixed. When rotated counterclockwise, the protective cover 3 can be removed for easy maintenance of the composite filter cartridge 5. The protective cover 3 is made of visible PVC material, which makes it easy to observe the situation inside the filter chamber 4.

[0033] Continue as Figures 6 to 7 As shown, the filter chamber 4 is connected to a limiting tube 13 that corresponds to and communicates with the air inlet 6. The composite filter cylinder 5 is limited within a limiting frame formed by multiple limiting tubes 13 (there are three limiting tubes 13 in the figure). The limiting tubes 13 guide and limit the composite filter cylinder 5 to prevent it from shifting in the filter chamber 4, thereby improving its reliability after installation.

[0034] like Figures 8 to 9 As shown, the composite filter cartridge 5 includes an inner air filter 15 (using a HEPA filter, or an activated carbon filter, for filtering fine particulate matter) and an outer insect filter 14 (using a stainless steel mesh, or a nylon mesh, with a pore size of 0.5-1mm, for intercepting insects and hair). Air first passes through the outer insect filter 14 to intercept insects, and then passes through the inner air filter 15 to filter particulate matter. This dual filtration improves efficiency.

[0035] The working principle of this utility model:

[0036] like Figures 1 to 3As shown, when the filter is installed embedded in the wall 9, the front side of the main frame 1 (including the air inlet 6) is located on the outside of the wall 9, and the air outlet 7 extends into the inside of the wall 9. During operation, the ventilation fan 16 generates airflow similar to that in the factory. Outdoor air enters the filter chamber 4 through the air inlet 6 on the outside of the wall 9, undergoes double-layer filtration by the composite filter cartridge 5 (first, the insect filter 14 intercepts debris, and then the air filter 15 purifies particulate matter), and is then discharged into the room through the air outlet 7, completing the air purification process. Since the air inlet 6 faces the wall 9, it is blocked and hidden, making it difficult for insects to find its location, significantly reducing the probability of insects entering the filter chamber 4, avoiding the efficiency reduction problem caused by insect blockage or contamination of the filter components, and resulting in a cleaner appearance.

[0037] Maintenance operation of this utility model:

[0038] like Figures 6 to 7 As shown, when it is necessary to replace the composite filter cartridge 5, turn off the power of the equipment, use a tool to rotate the butterfly top cap 12 counterclockwise to loosen its tightness against the protective cover 3, and then remove the protective cover 3; then directly pull out the composite filter cartridge 5 from the limit frame, replace the new composite filter cartridge 5, align the protective cover 3 with the front side of the main frame 1, and rotate the butterfly top cap 12 clockwise to tighten it. The operation is simple and quick.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A composite filter for indoor air purification, comprising a main frame, a positioning frame fixedly connected to the rear side of the main frame, a protective cover detachably installed on the front side of the main frame, a sealed filter chamber formed by the main frame and the protective cover, a composite filter cartridge placed in the filter chamber, and an air inlet and an air outlet pipe communicating with the filter chamber. Its features are: The positioning frame is connected to the main frame by a support plate to maintain the distance between the two. The air inlet is located on the main frame outside the wall and faces the wall. The air outlet is connected to the main frame and extends into the wall.

2. The composite filter for indoor air purification according to claim 1, characterized in that, The air inlets are provided in multiple locations, and all air inlets are distributed in a circumferential array along the main frame.

3. The composite filter for indoor air purification according to claim 2, characterized in that: The number of support plates is equal to the number of air inlets, and each support plate is located between two adjacent air inlets.

4. The composite filter for indoor air purification according to claim 1, characterized in that, The air outlet is located at the center of the main frame and serves as the core of the positioning frame.

5. The composite filter for indoor air purification according to claim 2, characterized in that, The diameter of the outlet pipe opening is larger than the diameter of the inlet pipe.

6. The composite filter for indoor air purification according to claim 1, characterized in that: The filter chamber is fixed with a bracket located at its center. A screw extending outside the protective cover is connected to the bracket, and a butterfly cap that tightens and fixes the protective cover is threaded onto the screw.

7. The composite filter for indoor air purification according to claim 2, characterized in that: The filter chamber is internally connected to a limiting tube that corresponds to and communicates with the air inlet, and the composite filter cylinder is confined within a limiting frame formed by multiple limiting tubes.

8. The composite filter for indoor air purification according to any one of claims 1-7, characterized in that: The composite filter cartridge includes an air filter on the inner side and a mosquito filter on the outer side.

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