A multi-purification air purification device
By combining multiple purification components, including a pre-filter, a medium-efficiency filter, a high-efficiency filter, a photocatalytic plate, and an activated carbon filter, the limitations of existing air purifiers with their single purification method are overcome, achieving efficient removal and purification of various pollutants in the air.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YONGJIAN INSTR EQUIP
- Filing Date
- 2025-09-01
- Publication Date
- 2026-08-04
AI Technical Summary
Most existing air purifiers use a single purification method, which cannot effectively remove harmful gases, and activated carbon is easily saturated, resulting in high operating costs and reduced purification capacity.
It employs a multi-stage purification process, including a combination of pre-filters, medium-efficiency filters, high-efficiency filters, photocatalytic plates, and activated carbon filters. By filtering particulate matter of different sizes through multiple filters, combined with ultraviolet light-induced photocatalytic reactions and activated carbon adsorption, multiple purification processes are achieved.
It effectively removes large dust particles, fine particulate matter, and harmful gases from the air, improves purification efficiency, reduces activated carbon saturation frequency, extends device lifespan, and lowers maintenance costs.
Smart Images
Figure CN224593400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification technology, and in particular to a multi-stage air purification device. Background Technology
[0002] With rapid industrial development and improved living standards, the types of air pollutants are increasing, such as dust, particulate matter, formaldehyde, benzene, and TVOC (total volatile organic compounds). These pollutants seriously affect people's health, making air purifiers indispensable in homes, offices, hospitals, and other settings. Most existing air purifiers employ a single purification method, relying solely on filters to remove particulate matter or activated carbon to adsorb organic pollutants. However, single purification methods have significant limitations: filters alone cannot effectively remove harmful gases from the air; activated carbon adsorption alone is ineffective at filtering fine particulate matter, and activated carbon is easily saturated, requiring frequent replacement, which increases operating costs and reduces the device's continuous purification capacity. Therefore, we propose a multi-stage air purifier. Utility Model Content
[0003] To address the aforementioned problems, this invention provides a multi-stage air purification device. This invention solves the problem that most existing air purification devices employ a single purification method, relying solely on filters to remove particulate matter or activated carbon to adsorb organic pollutants. However, single purification methods have significant limitations: relying solely on filters cannot effectively remove harmful gases from the air; relying solely on activated carbon adsorption has poor filtration efficiency for fine particulate matter, and activated carbon is easily saturated, requiring frequent replacement, which not only increases operating costs but also reduces the continuous purification capacity of the device.
[0004] This utility model discloses a multi-stage air purification device, comprising a housing, with air inlet windows on both sides of the lower end of the housing. Inside the housing, above the air inlet windows on both sides, are first mounting brackets. A pre-filter is inserted into the lower end of each first mounting bracket. A medium-efficiency filter is positioned above the pre-efficiency filter, and a high-efficiency filter is positioned above the medium-efficiency filter. Inside the housing, above the first mounting brackets, is a second mounting bracket with a photocatalytic plate inserted into it. Inside the housing, above the photocatalytic plate, is an ultraviolet lamp. Inside the housing, above the ultraviolet lamp, is a third mounting bracket with an activated carbon filter inserted into it. A connecting pipe is located in the middle of the upper part of the housing, and its lower part communicates with an air outlet groove. Air outlet windows are located on both side walls of the air outlet groove. A fan is located at the top of the housing.
[0005] In the above scheme, the photocatalytic plate is a TiO2 coated carrier plate, and the carrier plate has a honeycomb structure.
[0006] In the above scheme, a control panel is provided above the air outlet slot.
[0007] In the above scheme, a cover plate is provided on one side of the upper end of the shell.
[0008] In the above scheme, a dustproof net is provided inside the air intake window.
[0009] In the above scheme, brake casters are provided at all four corners of the lower part of the housing.
[0010] The advantages and beneficial effects of this utility model are as follows: This utility model provides a multi-stage air purification device. Air first passes through a pre-filter, which removes large particles of dust and hair. Next, it enters a medium-efficiency filter, which further filters out fine particles. Then, it enters a high-efficiency filter, which removes tiny PM, bacteria, viruses, etc. The filtered air then enters a photocatalytic plate, where ultraviolet light from a UV lamp excites the photocatalytic plate to produce a catalytic reaction, decomposing harmful gases such as formaldehyde, benzene, and TVOC into harmless CO2 and H2O. Subsequently, the air enters an activated carbon adsorption module, where the activated carbon filter adsorbs residual harmful gases and odors, completing the multi-stage purification process. This purification device, through the arrangement of multiple purification components, can effectively purify pollutants in the air and effectively improve air quality. Attached Figure Description
[0011] 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.
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a cross-sectional view of the present invention;
[0014] Figure 3 This is a schematic diagram of part A of the present invention.
[0015] In the diagram: 1. Housing; 2. Air inlet window; 3. First mounting bracket; 4. Primary filter; 5. Medium-efficiency filter; 6. High-efficiency filter; 7. Second mounting bracket; 8. Photocatalytic plate; 9. Ultraviolet lamp; 10. Third mounting bracket; 11. Activated carbon filter; 12. Connecting pipe; 13. Air outlet slot; 14. Air outlet window; 15. Fan; 16. Control panel; 17. Cover plate; 18. Dustproof net; 19. Brake caster. Detailed Implementation
[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0017] like Figure 1-3 As shown, this utility model is a multi-stage air purification device, including a housing 1. Air inlets 2 are provided on both sides of the lower end of the housing 1. First mounting brackets 3 are provided on both sides above the air inlets 2 inside the housing 1. A pre-filter 4 is inserted into the lower end of each mounting bracket 3. The pre-filter 4 is made of PP non-woven fabric and has a filtration accuracy of 5-10μm, used to filter large particles of dust, hair, and other impurities in the air. Above the pre-filter 4 is a medium-efficiency filter 5, made of glass fiber and with a filtration accuracy of 1-5μm, used to further filter fine particles in the air. Above the medium-efficiency filter 5 is a high-efficiency filter 6, made of HEPA filter material, with a filtration accuracy of up to 0.3μm and a filtration efficiency of not less than 99.97%, used to filter micro-particles in the air. For small particulate matter, such as PM2.5, bacteria, and viruses, a second mounting bracket 7 is located above the first mounting bracket 3 inside the housing 1. A photocatalytic plate 8 is inserted into the second mounting bracket 7. An ultraviolet lamp 9 with a wavelength of 254nm is located above the photocatalytic plate 8 inside the housing 1 to excite the photocatalytic plate 8 to produce a catalytic reaction. The photocatalytic plate 8 has a honeycomb structure to increase the contact area with air. Under ultraviolet irradiation, the photocatalytic plate 8 can decompose harmful gases such as formaldehyde, benzene, and TVOC in the air into harmless CO2 and H2O. A third mounting bracket 10 is located above the ultraviolet lamp 9 inside the housing 1. An activated carbon filter 11 is inserted into the third mounting bracket 10. The activated carbon filter 11 is filled with columnar activated carbon with a specific surface area of not less than 1000m². 2 / g, used to adsorb residual harmful gases and odors in the air, further improving the air purification effect. A connecting pipe 12 is provided in the middle of the upper part of the housing 1. The lower part of the connecting pipe 12 is connected to the air outlet groove 13. Air outlet windows 14 are provided on both side walls of the air outlet groove 13. A fan 15 is provided at the top inside the housing 1. When the fan 15 is working, the fan 15 drives the airflow, so that the airflow can pass through each filter component in sequence, thereby completing the filtration effect of the airflow through the filter components. The filtered and purified airflow can be discharged through the air outlet window 14.
[0018] The photocatalytic plate 8 is a TiO2-coated carrier plate, and the carrier plate has a honeycomb structure.
[0019] A control panel 16 is provided above the air outlet 13, through which the working status of the purification device can be controlled.
[0020] The upper side of the housing 1 is provided with a cover plate 17, which is fixedly connected to the housing 1 by bolts. The cover plate 17 makes it easier for staff to repair and replace the purification components inside the housing 1.
[0021] The air intake window 2 is equipped with a dustproof net 18, which can initially filter larger solid impurities.
[0022] Each of the four corners of the lower part of the housing 1 is provided with a brake caster 19, which makes it easier to move and position the purification device.
[0023] Specifically, in this utility model, when the fan 15 is working, the fan 15 drives the airflow, allowing the airflow to enter the housing 1 through the air inlet window 2. The air first passes through the pre-filter 4, which filters out large particles of dust and hair and other impurities in the air; then it enters the medium-efficiency filter 5, which further filters out fine particles; then it enters the high-efficiency filter 6, which filters out tiny PM2.5, bacteria, viruses, etc. The filtered air enters the photocatalytic plate 8, where the ultraviolet light emitted by the ultraviolet lamp 9 excites the photocatalytic plate 8 to produce a catalytic reaction, decomposing harmful gases such as formaldehyde, benzene, and TVOC in the air into harmless CO2 and H2O; subsequently, the air enters the activated carbon adsorption module, where the activated carbon filter adsorbs residual harmful gases and odors, completing multiple purification processes. The air that has undergone multiple purification processes is conducted through the connecting pipe 12 and can be discharged through the air outlet window 14.
[0024] The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.
Claims
1. A multi-stage air purification device, comprising a housing (1), characterized in that, The housing (1) has air inlets (2) on both sides of its lower end. Inside the housing (1), there are first mounting brackets (3) on both sides above the air inlets (2). A primary filter (4) is inserted into the lower end of the first mounting bracket (3). A medium-efficiency filter (5) is installed above the primary filter (4). A high-efficiency filter (6) is installed above the medium-efficiency filter (5). Inside the housing (1), there is a second mounting bracket (7) above the first mounting bracket (3). A photocatalyst plate (8) is inserted into the second mounting bracket (7). An ultraviolet lamp (9) is provided inside the housing (1) above the photocatalytic plate (8). A third mounting bracket (10) is provided inside the housing (1) above the ultraviolet lamp (9). An activated carbon filter (11) is inserted into the third mounting bracket (10). A connecting pipe (12) is provided in the middle of the upper part of the housing (1). The lower part of the connecting pipe (12) is connected to the air outlet groove (13). Air outlet windows (14) are provided on both sides of the air outlet groove (13). A fan (15) is provided at the top inside the housing (1).
2. The multi-stage air purification device according to claim 1, characterized in that, The photocatalytic plate (8) is a TiO2 coated carrier plate, and the carrier plate has a honeycomb structure.
3. The multi-stage air purification device according to claim 1, characterized in that, A control panel (16) is provided above the air outlet (13).
4. The multi-stage air purification device according to claim 1, characterized in that, The upper end of the housing (1) is provided with a cover plate (17).
5. The multi-stage air purification device according to claim 1, characterized in that, The air intake window (2) is equipped with a dustproof net (18).
6. The air purification device with multiple purification processes according to claim 1, characterized in that, Brake casters (19) are provided at the four corners of the lower part of the housing (1).