Central air conditioner filter element
By combining a multi-layer filtration system with an aromatherapy module, the problem of traditional air conditioning systems being unable to effectively filter fine particulate matter and neglecting a comfortable olfactory environment is solved, achieving the effects of air purification and olfactory improvement, and simplifying the process of disassembling and replacing the filter element.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN XIANGSEN ENVIRONMENTAL PROTECTION ENG CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional air conditioning systems cannot effectively remove fine particulate matter from the air, leading to a decline in indoor air quality. Furthermore, traditional filters neglect users' needs for a comfortable olfactory environment and are complicated to disassemble and inconvenient to use.
Design a central air conditioning filter element that adopts a multi-layer filtration system, including an inner filter plate, a middle filter plate, an activated carbon filter layer, and an outer filter plate to filter dust and harmful gases in the air in stages. It also integrates an aromatherapy module to improve indoor odor by releasing fragrance. The modular design makes it easy to disassemble and replace.
It achieves efficient filtration of particulate matter and harmful gases in the air, improves indoor air quality, enhances the olfactory experience, simplifies the filter maintenance process, and reduces maintenance costs.
Smart Images

Figure CN224136087U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning filter elements, and more particularly to a central air conditioning filter element. Background Technology
[0002] There are various types of central air conditioning filters, including bag filters such as the QLXD bag filter and filters adapted to Daikin central air conditioning systems. They are devices used to filter dust, particulate matter and other pollutants in the air. They are mainly installed at the air inlet of the central air conditioning system. Their main function is to intercept particles in the air entering the air conditioning system, ensure air cleanliness, thereby improving indoor air quality and protecting people's health.
[0003] Traditional air conditioning systems may not be able to effectively remove fine particulate matter, harmful gases such as formaldehyde, benzene, and odors from the air, leading to a decline in indoor air quality. Moreover, traditional air purifiers or filters only focus on air cleaning and ignore users' needs for a comfortable olfactory environment. Traditional filters are complicated to disassemble, and cleaning or replacing them is time-consuming and laborious, increasing the burden on users.
[0004] Therefore, traditional air conditioning systems may not be able to effectively remove fine particulate matter from the air, leading to a decline in indoor air quality. Furthermore, traditional air purifiers or filters only focus on air cleaning and neglect users' needs for a comfortable olfactory environment. Traditional filters are also complex to disassemble. To address this, a central air conditioning filter can be designed that filters dust, particulate matter, and harmful gases from the air in stages through a multi-layer filtration system consisting of an inner filter plate, a middle filter plate, an activated carbon filter layer, and an outer filter plate. It also integrates an aromatherapy module to improve indoor odor and create a pleasant atmosphere by releasing fragrances. The modular design allows each component to be independent and detachable, facilitating individual cleaning or replacement. Utility Model Content
[0005] To overcome the problem that traditional air conditioning systems may not be able to effectively remove fine particulate matter from the air, leading to a decline in indoor air quality, and that traditional air purifiers or filters only focus on air cleaning while ignoring users' needs for a comfortable olfactory environment, as well as the problem of complicated disassembly of traditional filters.
[0006] The technical solution of this utility model is as follows: a central air conditioning filter element, including a disassembly frame, an installation frame, a buckle plate, a ventilation groove, an aroma diffuser, and positioning cones; an installation frame for fixing the aroma-generating structure is installed at the upper end of the disassembly frame; multiple sets of ventilation grooves for air circulation are opened sequentially from left to right on the lower surface of the installation frame; multiple sets of positioning cones are linearly installed at the upper end of the ventilation grooves inside the installation frame; an aroma diffuser for generating fragrance is installed between every two sets of positioning cones in each horizontal direction; and a buckle plate for opening, closing, fixing, and replacing the aroma diffuser is installed at the center of the outer side of the installation frame.
[0007] Preferably, the detachable frame is the basic structure of the entire filter element, used to support other components. It is fixedly connected to the mounting frame to form an integrated device, and has an internal central mounting groove to provide installation space for the multi-layer filter plates. The mounting frame is fixed to the upper end of the detachable frame, and its lower surface has multiple sets of ventilation slots to guide air circulation. The internally linearly installed positioning cones serve to fix the aromatherapy module, ensuring that the aromatherapy can be stably placed in the designated position. The buckle is installed on the outer center of the mounting frame for opening and closing operation. Users can easily replace the aromatherapy module by opening the buckle. The ventilation slots are located on the lower surface of the mounting frame, arranged sequentially from left to right, to guide air circulation. The aromatherapy module is installed between every two sets of positioning cones. As air flows through the mounting frame, the aromatherapy releases fragrance, which diffuses into the indoor space with the airflow. The positioning cones, through physical support, ensure that the aromatherapy module will not move due to airflow impact.
[0008] Preferably, the disassembly frame has fixing plates installed at the center of both sides of the center, which are fixedly connected to the mounting frame, and the disassembly frame has a mounting groove at the center of its interior.
[0009] Preferably, two sets of symmetrical rotating rods are installed on both sides of the front end of the disassembly frame, and two sets of limiting rings are symmetrically installed at the upper and lower ends of the rotating rods.
[0010] Preferably, a movable plate is fixedly connected to the inner side of the rotating rod, and a connecting plate is fixedly connected to the outer side of the movable plate at the end away from the rotating rod.
[0011] Preferably, a fixing screw is provided through the center of the two sets of connecting plates, and four sets of limiting grooves are opened from top to bottom inside the mounting groove.
[0012] Preferably, an inner filter plate is installed at the lower end of the mounting slot, and multiple filter slots are linearly formed on the surface of the inner filter plate.
[0013] Preferably, the inner filter plate has a middle filter plate at the upper end, and an activated carbon filter layer is installed at the end of the middle filter plate away from the inner filter plate.
[0014] Preferably, an outer filter plate is installed at the end of the activated carbon filter layer away from the middle filter plate. The surface of the outer filter plate is covered with a hydrophobic coating. The outer filter plate, activated carbon filter layer, inner filter plate and middle filter plate are all slidably connected to the limiting groove.
[0015] The beneficial effects of this utility model are as follows: Compared with a traditional central air conditioning filter, this new model optimizes the airflow path through the installation frame ventilation slot, ensuring smooth airflow to the filter. The positioning cone design ensures that the aromatherapy module is firmly installed, preventing displacement or detachment due to airflow impact. The buckle plate improves maintenance convenience, allowing users to replace the aromatherapy module without professional tools. The ventilation slot enhances airflow efficiency and reduces airflow resistance. The positioning cone improves the installation stability of the aromatherapy module, preventing loosening or detachment, and ensuring sufficient contact between the aromatherapy module and the airflow to maximize the aroma release effect. Attached Figure Description
[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of a central air conditioning filter element according to this utility model.
[0017] Figure 2 The diagram shown is a schematic representation of the installation frame structure for a central air conditioning filter element according to this utility model.
[0018] Figure 3 The diagram shown is a schematic representation of the filter tank structure of a central air conditioning filter element according to this utility model.
[0019] Figure 4 The diagram shown is a schematic representation of the structure of a central air conditioning filter element limiting groove according to this utility model.
[0020] Figure 5 The diagram shown is a schematic diagram of the structure of the inner filter plate of a central air conditioning filter element according to this utility model.
[0021] Explanation of reference numerals in the attached drawings: 1. Disassembly frame; 2. Fixing plate; 3. Mounting frame; 4. Buckle plate; 5. Ventilation slot; 6. Aromatherapy; 7. Positioning cone; 8. Mounting slot; 9. Limiting ring; 10. Rotating rod; 11. Movable plate; 12. Connecting plate; 13. Fixing screw; 14. Limiting slot; 15. Outer filter plate; 16. Hydrophobic coating; 17. Activated carbon filter layer; 18. Middle filter plate; 19. Inner filter plate; 20. Filter tank. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] Please see Figure 1 - Figure 4This utility model provides an embodiment: a central air conditioning filter element, including a disassembly frame 1, an installation frame 3, a buckle plate 4, a ventilation groove 5, an aroma diffuser 6, and a positioning cone 7; the disassembly frame 1 is equipped with an installation frame 3 for fixing the aroma-generating structure at its upper end; multiple sets of ventilation grooves 5 for air circulation are sequentially opened from left to right on the lower surface of the installation frame 3; multiple sets of positioning cones 7 are linearly installed at the upper end of the ventilation grooves 5 inside the installation frame 3; an aroma diffuser 6 for generating aroma is installed between every two sets of positioning cones 7 in each horizontal direction; and a buckle plate 4 for opening, closing, fixing, and replacing the aroma diffuser 6 is installed at the center of the outer side of the installation frame 3.
[0024] Please see Figure 1 - Figure 2 In this embodiment, fixing plates 2, which are fixedly connected to the mounting frame 3, are installed at the center of both sides of the disassembly frame 1. An installation groove 8 is provided in the center of the disassembly frame 1. This design enhances the connection stability between the disassembly frame 1 and the mounting frame 3, ensuring that the entire device will not loosen due to airflow impact or external force during operation. Simultaneously, the installation groove 8 in the center of the disassembly frame 1 provides a precise installation position for the multi-layer filter plates, facilitating the sliding connection and quick disassembly of each filter plate, reducing maintenance difficulty and improving assembly efficiency. Before disassembly frame 1... Two sets of symmetrical rotating rods 10 are installed on both sides of the end. Two sets of limiting rings 9 are symmetrically installed at the upper and lower ends of the rotating rods 10. The design effectively enhances the structural stability and ease of operation of the filter element device. The symmetrical layout of the rotating rods 10 ensures that the device is subjected to uniform force during installation or disassembly, avoiding deformation or loosening caused by force on one side. The setting of the limiting rings 9 further restricts the range of motion of the rotating rods 10, preventing them from rotating or shifting excessively, thereby ensuring that the device always maintains the correct assembly state during operation.
[0025] Please see Figure 2 - Figure 3In this embodiment, a movable plate 11 is fixedly connected to the inner side of the rotating rod 10, and a connecting plate 12 is fixedly connected to the outer side of the movable plate 11 at the end away from the rotating rod 10. This design enhances the structural flexibility and stability of the filter element device. The combination of the movable plate 11 and the connecting plate 12 forms an adjustable connection system, which can provide additional support and positioning functions when installing or removing the filter element. This design not only allows for a certain amount of movement between components to adapt to different installation environments, but also further strengthens the overall structural rigidity through the connecting plate 12, preventing loosening or detachment. The two sets of connecting plates 12 are connected by a fixing screw 13 through their center. The mounting groove 8 has four sets of limiting grooves 14 arranged from top to bottom inside. The design of the two sets of connecting plates 12 being connected by a fixing screw 13 through their center and the mounting groove 8 having four sets of limiting grooves 14 arranged from top to bottom inside significantly improves the stability and assembly accuracy of the filter element device. The fixing screw 13 firmly fixes the connecting plate 12, ensuring that the components will not loosen due to vibration or airflow impact during operation, thus enhancing the stability of the overall structure. At the same time, the setting of the limiting grooves 14 provides a precise installation position and guide for the multi-layer filter plate, allowing the filter plate to slide into the designated position quickly and accurately, simplifying the assembly process and reducing the possibility of installation errors.
[0026] Please see Figure 3 - Figure 4In this embodiment, an inner filter plate 19 is installed at the lower end of the mounting groove 8. Multiple sets of filter grooves 20 are linearly formed on the surface of the inner filter plate 19. This design effectively improves the initial filtration efficiency and airflow performance of the filter element. As the first line of defense, the inner filter plate 19 can intercept larger particles such as dust and hair, reducing the burden on subsequent filtration layers and extending the overall service life of the filter element. Simultaneously, the linearly arranged filter grooves 20 optimize the airflow path and reduce air resistance. To ensure smooth airflow into the filter element, thereby improving overall filtration efficiency and device operating efficiency, a middle filter plate 18 is located above the inner filter plate 19. An activated carbon filter layer 17 is installed at the end of the middle filter plate 18 furthest from the inner filter plate 19. This design achieves step-by-step air filtration and efficient purification. The inner filter plate 19 intercepts larger particles, the middle filter plate 18 further captures finer particles, and the activated carbon filter layer 17 focuses on adsorption. This multi-layered, functionally distinct structural design effectively removes harmful gases and odors from the air, improving overall filtration efficiency and reducing the burden on individual filter layers, thus extending the filter's lifespan. An outer filter plate 15 is installed at the end of the activated carbon filter layer 17 furthest from the middle filter plate 18. The surface of the outer filter plate 15 is covered with a hydrophobic coating 16. The outer filter plate 15, activated carbon filter layer 17, inner filter plate 19, and middle filter plate 18 are all slidably connected to the limiting groove 14. The combination design of the activated carbon filter layer 17 and the outer filter plate 15, as well as the sliding connection between each filter layer and the limiting groove 14... The dynamic connection method significantly improves the functionality and ease of maintenance of the filter element. The hydrophobic coating 16 on the surface of the outer filter plate 15 can effectively prevent moisture penetration, avoid damage to the filter element due to moisture, and thus extend its service life. At the same time, the multi-layer filter plate's step-by-step design fully utilizes the functions of each layer: the activated carbon filter layer 17 adsorbs harmful gases and odors, and the outer filter plate 15, as the last barrier, further purifies the air and protects the internal structure. In addition, the sliding connection method achieved through the limiting groove 14 makes each filter plate easy to disassemble and clean, simplifies the maintenance process, and ensures that the filter element always maintains a high-efficiency working state.
[0027] When the air conditioning system is in operation, indoor or outdoor air is drawn into the front end of the filter element. It first passes through the mounting groove 8 inside the disassembly frame 1 and enters the inner filter plate 19. The inner filter plate 19 has multiple filter grooves 20 on its surface, which can initially intercept larger particles such as dust and hair, ensuring the normal operation of the subsequent filtration system. The air that has undergone preliminary filtration continues to flow upwards into the mounting frame 3 area. At this time, the air enters the mounting frame 3 through the ventilation groove 5 and flows through the aromatherapy module 6. The fragrance in the aromatherapy module 6 evaporates and diffuses with the airflow. The middle filter plate 18 further intercepts fine particles, and the activated carbon filter layer 17 adsorbs odors, formaldehyde, benzene, and other harmful gases in the air. The outer filter plate 15 acts as the last line of defense, preventing pollutants from penetrating the filter element. Simultaneously, its hydrophobic coating 16 prevents moisture penetration. After multiple layers of filtration and aromatherapy treatment, the clean air is finally discharged from the rear end of the filter element and enters the indoor space. When it is necessary to replace the aromatherapy module 6 or clean / replace the filter plate, the user can open the latch plate 4 at the center of the outer side of the mounting frame 3.
[0028] Through the above steps, this device can not only efficiently filter dust, particulate matter, and harmful gases in the air, but also release fragrance through the aromatherapy module 6, improving indoor air quality and enhancing the olfactory experience. The multi-stage design of the inner filter plate 19, middle filter plate 18, activated carbon filter layer 17, and outer filter plate 15 ensures that the air is purified layer by layer, effectively removing different types of pollutants. The aromatherapy function 6 can create a pleasant indoor atmosphere and relieve stress, making it especially suitable for use in homes, offices, or commercial venues. Each component is independent and detachable, making it easy to replace or clean individually, reducing maintenance costs. The sliding connection design between the filter plate and the limiting groove 14 makes installation and disassembly more convenient. The snap-on plate 4 design allows users to easily open the installation frame 3 and quickly replace the aromatherapy module 6 without professional tools. The optimized ventilation groove 5 design ensures smooth air circulation and reduces energy waste. It solves the problem that traditional air conditioning systems may not be able to effectively remove fine particulate matter in the air, leading to a decline in indoor air quality. Moreover, traditional air purifiers or filters only focus on air cleaning and ignore the user's need for a comfortable olfactory environment, as well as the problem of complicated disassembly of traditional filters.
Claims
1. A central air conditioner filter element comprising a detachable frame (1); characterized in that: It also includes an installation frame (3), a buckle plate (4), a ventilation slot (5), an aromatherapy diffuser (6), and a positioning cone (7); the upper end of the disassembly frame (1) is equipped with an installation frame (3) for fixing the aroma-generating structure. The lower surface of the installation frame (3) has multiple sets of ventilation slots (5) for air circulation from left to right. Inside the installation frame (3), multiple sets of positioning cones (7) are linearly installed at the upper end of the ventilation slots (5). An aromatherapy diffuser (6) for generating aroma is installed between each two sets of positioning cones (7) in each horizontal direction. The center of the outer side of the installation frame (3) is equipped with a buckle plate (4) for opening and closing to fix and replace the aromatherapy diffuser (6).
2. The filter cartridge of claim 1, wherein: The disassembly frame (1) has a fixing plate (2) on both sides of the center that is fixedly connected to the mounting frame (3), and the disassembly frame (1) has an installation groove (8) in the center inside.
3. The filter cartridge of claim 1, wherein: Two sets of symmetrical rotating rods (10) are installed on both sides of the front end of the disassembly frame (1), and two sets of limiting rings (9) are symmetrically installed at the upper and lower ends of the rotating rods (10).
4. The filter cartridge of claim 3, wherein: A movable plate (11) is fixedly connected to the inner side of the rotating rod (10), and a connecting plate (12) is fixedly connected to the outer side of the movable plate (11) away from the rotating rod (10).
5. The filter cartridge of claim 4, wherein: Two sets of connecting plates (12) are provided with a fixing screw (13) through the center, and four sets of limiting grooves (14) are opened from top to bottom inside the mounting groove (8).
6. The filter cartridge of claim 2, wherein: An inner filter plate (19) is installed at the lower end of the mounting slot (8), and multiple filter slots (20) are linearly opened on the surface of the inner filter plate (19).
7. The filter cartridge of claim 6, wherein: An inner filter plate (19) is provided with a middle filter plate (18) at the upper end, and an activated carbon filter layer (17) is installed at the end of the middle filter plate (18) away from the inner filter plate (19).
8. The filter cartridge of claim 7, wherein: An outer filter plate (15) is installed at the end of the activated carbon filter layer (17) away from the middle filter plate (18). The surface of the outer filter plate (15) is covered with a hydrophobic coating (16). The outer filter plate (15), the activated carbon filter layer (17), the inner filter plate (19) and the middle filter plate (18) are all slidably connected to the limiting groove (14).