Air purifier filter screen assembly with partition filtering function

Abstract

This utility model discloses an air purifier filter assembly with zoned filtration function, including a filter mounting base and an intermediate filter assembly. The intermediate filter assembly is located at the center of the front end of the filter mounting base, and dustproof nets are provided around the front perimeter of the filter mounting base. An activated carbon filter layer is provided on the back of the filter mounting base, which purifies harmful substances in the air. This utility model achieves zoned and graded filtration by combining the central intermediate filter assembly with the surrounding dustproof nets. The central area focuses on double fine filtration, while the surrounding areas effectively intercept larger dust particles, significantly improving the efficiency and targeting of air purification.

Description

Technical Field

[0001] This utility model relates to a filter assembly, specifically to an air purifier filter assembly with zoned filtration function. Background Technology

[0002] Current air purifiers generally use a single, uniformly arranged filter structure, such as an integrated HEPA filter, where all incoming airflow passes through the same layer of filter material. Due to differences in airflow characteristics, the airflow and pollutant concentration in the central area of ​​the air inlet are usually higher than in the surrounding areas. However, existing filters are not designed to account for these regional differences, causing the central filter material to accumulate a large amount of dust in a short time, leading to blockages and premature failure. Meanwhile, the filter material in the surrounding areas is underutilized, resulting in a decrease in overall purification efficiency and a shortened filter lifespan.

[0003] On the other hand, most existing filters are fixed structures, with common installation methods including gluing, snap-fitting, or riveting. When a part of the filter media (such as the pre-filter coarse layer) needs to be cleaned or replaced, the entire filter assembly often has to be handled together, which not only increases the user's maintenance burden and cost, but also hinders the sustainable use of the filter structure.

[0004] Furthermore, existing filter technologies often have relatively simple functions, with most products primarily focusing on physically blocking particulate matter while failing to adequately address odors, formaldehyde, and other harmful gases in the air. Although some products attempt to add an activated carbon layer at the end, they generally lack organic integration with the front-end zoned filtration, resulting in limited purification effects. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an air purifier filter assembly with zoned filtration function, so as to solve the problems existing in the background art.

[0006] The air purifier filter assembly with zoned filtration function of this utility model is achieved through the following technical solution, including a filter mounting base and an intermediate filter assembly.

[0007] The intermediate filter assembly is located at the center of the front end of the filter mounting base, and dustproof nets are provided around the front end of the filter mounting base.

[0008] An activated carbon filter layer is provided on the back of the filter mounting base, which purifies harmful substances in the air.

[0009] As a preferred technical solution, the intermediate filter assembly includes an intermediate filter base, a coarse filter assembly, a fixing frame, and a fine filter assembly.

[0010] The coarse filter assembly is located at the front end of the intermediate filter base, and the fine filter assembly is fixed to the fixed frame.

[0011] The fixed frame is spliced ​​and set at the rear end of the intermediate filter seat through a splicing structure, thereby achieving dual filtration in the middle position while the air purifier is working.

[0012] As a preferred technical solution, a fixing seat is provided in the center of the filter mounting base, and the fixing seat is fixed to the front of the filter mounting base by a connecting rod;

[0013] The intermediate filter seat plug-in structure is fixed on the fixed seat, thereby realizing the fixation of the intermediate filter seat.

[0014] As a preferred technical solution, the splicing structure includes a fixing ring disposed on a fixed frame and a fixing cavity disposed on the back of the intermediate filter seat;

[0015] The fixing ring is placed inside the fixing cavity, thereby realizing the installation between the fixing frame and the intermediate filter seat.

[0016] As a preferred technical solution, the plug-in structure includes a connecting post disposed on the filter mounting base and a connecting hole disposed on the fixing base;

[0017] The connecting post is inserted into the connecting hole, thereby realizing the connection between the filter mounting base and the fixed base.

[0018] The beneficial effects of this utility model are:

[0019] This invention achieves zoned and graded filtration in the air purification process by setting an intermediate filter component in the center of the filter mounting base and arranging dustproof nets around it: the central area adopts a dual fine filtration structure combining coarse and fine filters, which can effectively deal with the large air volume and high pollutant concentration in the air inlet center, delaying the saturation and clogging of the central filter material; the surrounding area is equipped with dustproof nets to intercept larger particles, so that the surrounding filter material can be fully utilized, thereby improving the overall filtration efficiency and extending the service life of the filter.

[0020] Meanwhile, the present invention introduces a detachable fixing method of plug-in and splicing in its structural design, and the intermediate filter components and related filter media can be installed and replaced independently. Users do not need to replace the entire filter assembly, which significantly reduces maintenance costs and improves ease of use and sustainability.

[0021] In addition, this utility model adds an activated carbon filter layer on the back of the filter mounting base, which not only physically blocks particulate matter, but also further adsorbs harmful gases such as formaldehyde, benzene series compounds and odors in the air, realizing the synergistic effect of physical filtration and chemical adsorption, and improving the overall purification capacity of the air purifier. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0025] Figure 3 and Figure 4 This is a schematic diagram of the intermediate filter component of this utility model.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Filter mounting base; 2. Intermediate filter assembly; 3. Intermediate filter base; 4. Coarse filter assembly; 5. Fixing frame; 6. Fine filter assembly; 7. Fixing base; 8. Connecting rod; 9. Dustproof net; 10. Fixing ring; 11. Fixing cavity; 12. Connecting column; 13. Connecting hole. Detailed Implementation

[0028] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0029] like Figures 1 to 4 As shown, this utility model discloses an air purifier filter assembly with zoned filtration function. The assembly includes a filter mounting base 1 and an intermediate filter assembly 2 positioned at its center. The filter mounting base 1 serves as the main support structure for the entire assembly. Dust filters 9 are installed around its front end to initially intercept larger particles when air enters, preventing large dust particles from directly entering the interior and reducing the burden on subsequent fine filtration. The intermediate filter assembly 2 is installed at the center of the front end of the filter mounting base 1, directly facing the main air intake channel, allowing the incoming air to be concentrated and finely processed through this filter assembly.

[0030] An activated carbon filter layer 14 is provided on the back of the filter mounting base 1, covering the back area of ​​the main body. After the air passes through the front dust filter and the middle filter component, it continues to flow to the activated carbon filter layer 14 on the back. The activated carbon layer has a strong adsorption capacity and can effectively remove formaldehyde, benzene-like organic matter, and odor molecules from the air. Thus, in addition to physically filtering dust, it further completes the chemical adsorption of gaseous pollutants, improving the air purification effect.

[0031] The internal structure of the intermediate filter assembly 2 is relatively complex, comprising an intermediate filter base 3, a coarse filter assembly 4, a fixing frame 5, and a fine filter assembly 6. The intermediate filter base 3 serves as the supporting component, housing the coarse filter assembly 4 and the fixing frame 5. The coarse filter assembly 4 is located at the front end of the intermediate filter base 3. Air first encounters this coarse filter when entering the central area, performing primary filtration of larger dust particles and some suspended solids, reducing the filtration pressure on the subsequent fine filter. The fine filter assembly 6 is fixed to the fixing frame 5, located after the coarse filter assembly 4. After passing through the coarse filter, the air enters the fine filtration stage, where it intercepts smaller pollutants and dust particles, forming a dual fine filtration structure. The fixing frame 5 is installed at the rear end of the intermediate filter base 3 using a splicing structure. This splicing method not only ensures the stable installation of the fine filter but also facilitates subsequent disassembly, replacement, and cleaning.

[0032] A fixing seat 7 is located at the center of the filter mounting base 1, and the fixing seat 7 is connected to the front of the filter mounting base 1 via a connecting rod 8. This structure ensures that the fixing seat 7 can be stably installed in the central area, providing support for the fixation of the intermediate filter seat 3. The intermediate filter seat 3 is fixed to the fixing seat 7 via a plug-in structure, thus achieving a stable installation without the use of complicated tools. The plug-in method not only makes assembly and disassembly more convenient, but also allows users to operate only on the intermediate component when the filter needs to be cleaned or replaced, without having to replace the entire filter mounting base, significantly reducing maintenance costs.

[0033] To further ensure a stable installation of the intermediate filter assembly 2, a splicing structure is adopted between the fixing frame 5 and the intermediate filter base 3. The splicing structure consists of a fixing ring 10 on the fixing frame 5 and a fixing cavity 11 on the back of the intermediate filter base 3. In use, the fixing ring 10 is inserted into the fixing cavity 11, forming a reliable plug-in fit, thereby ensuring that the fine filter assembly fits tightly against the intermediate filter base 3 and will not loosen due to airflow or vibration. This splicing method also retains detachability; when the filter media needs to be replaced, the fixing frame can be easily removed to take off the fine filter assembly for maintenance.

[0034] Furthermore, regarding the implementation of the plug-in fixing function, in this embodiment, the filter mounting base 1 is provided with a connecting post 12, and the fixing base 7 is provided with a corresponding connecting hole 13. During installation, the connecting post 12 is inserted into the connecting hole 13, thereby achieving a reliable connection between the filter mounting base 1 and the fixing base 7. The advantage of this structure is that it is easy to operate, has a firm connection, and does not rely on complex fasteners or adhesive methods, ensuring the stability of the overall structure and the operability of maintenance.

[0035] This invention achieves zoned and graded air purification by incorporating a double-layered intermediate filter assembly in the central area and surrounding it with dustproof netting. The central area utilizes a combination of coarse and fine filters for dual-stage fine filtration, effectively delaying saturation and clogging in the center of the filter and maintaining long-term filtration efficiency. The surrounding areas focus on intercepting larger particles, reducing the burden on the central area and ensuring balanced utilization of the entire filter. The activated carbon filter layer on the back further adsorbs harmful gases and odors, creating a synergistic purification effect of physical filtration and chemical adsorption. The entire filter assembly features a plug-in and splicing structure for easy disassembly and assembly. Users can replace or clean individual filter media without replacing the entire filter, significantly reducing usage and maintenance costs and substantially improving the overall performance and user experience of the air purifier.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. An air purifier filter assembly with zoned filtration function, characterized in that, Includes a filter mounting base (1) and an intermediate filter assembly (2); The intermediate filter assembly (2) is located at the center of the front end of the filter mounting base (1), and dustproof nets (9) are provided around the front end of the filter mounting base (1). An activated carbon filter layer (14) is provided on the back of the filter mounting base (1), through which harmful substances in the air are purified.

2. The air purifier filter assembly with zoned filtration function according to claim 1, characterized in that: The intermediate filter assembly (2) includes an intermediate filter base (3), a coarse filter assembly (4), a fixed frame (5), and a fine filter assembly (6); The coarse filter assembly (4) is located at the front end of the intermediate filter seat (3), and the fine filter assembly (6) is fixed on the fixed frame (5).

3. The air purifier filter assembly with zoned filtration function according to claim 2, characterized in that: The fixed frame (5) is spliced ​​and set at the rear end of the intermediate filter seat (3) through a splicing structure, so that dual filtration in the middle position can be achieved while the air purifier is working.

4. The air purifier filter assembly with zoned filtration function according to claim 1, characterized in that: A fixing seat (7) is provided in the center of the filter mounting base (1), and the fixing seat (7) is fixed to the front of the filter mounting base (1) by a connecting rod (8).

5. The air purifier filter assembly with zoned filtration function according to claim 2, characterized in that: The intermediate filter seat (3) is fixed to the fixed seat (7) by the plug-in structure, thereby realizing the fixation of the intermediate filter seat (3).

6. The air purifier filter assembly with zoned filtration function according to claim 3, characterized in that: The splicing structure includes a fixing ring (10) set on the fixing frame (5) and a fixing cavity (11) set on the back of the intermediate filter seat (3); The fixing ring (10) is placed in the fixing cavity (11) to realize the installation between the fixing frame (5) and the intermediate filter seat (3).

7. The air purifier filter assembly with zoned filtration function according to claim 5, characterized in that: The plug-in structure includes a connecting post (12) disposed on the filter mounting base (1) and a connecting hole (13) disposed on the fixing base (7); The connecting post (12) is inserted into the connecting hole (13) to achieve the connection between the filter mounting base (1) and the fixed base (7).

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