Novel air filter of central air conditioner
By adjusting the speed of the closed door and motor through detectors and controllers, the problem of traditional central air conditioning air filters being unable to identify the degree of air pollution has been solved, realizing intelligent filtration and energy consumption control, and improving filtration efficiency and device lifespan.
Patent Information
- Application Number
- CN202520219083.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Traditional central air conditioning air filters cannot identify the degree of air pollution, which means that the device cannot control energy consumption autonomously when filtering air with different levels of pollution, resulting in long-term high-energy-consumption operation and a short service life.
A novel air filter for central air conditioning has been designed. It uses a detector to detect air quality, and a controller to adjust the opening and closing angle of the closed door and the speed of the motor. Combined with a cylinder and opening and closing components, it can achieve intelligent filtration of air with different levels of pollution, reduce energy consumption and extend service life.
It achieves automatic energy consumption adjustment based on the level of air pollution, reducing the operating energy consumption of the device, extending its service life, and improving filtration efficiency and ease of maintenance.
Smart Images

Figure CN223869364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air filter technology, and in particular to a novel air filter for central air conditioning. Background Technology
[0002] As people's living standards improve, their requirements for indoor air quality are also increasing. Central air conditioning systems are widely used in commercial buildings, offices, and homes; however, traditional central air conditioning air filters have many shortcomings.
[0003] In existing technologies, some devices use a motor to drive fan blades to generate suction, which draws the air to be filtered into the device and then filters it through a filter plate. The filtered air is then discharged through an exhaust pipe. However, during operation, the device cannot identify the degree of air pollution and cannot control energy consumption when filtering air with different levels of pollution. This results in the device operating at high energy consumption for extended periods, leading to excessive energy consumption and a short lifespan. Therefore, a new type of air filter for central air conditioning is proposed. Utility Model Content
[0004] This utility model proposes a novel air filter for central air conditioning systems, aiming to improve the problem that some existing devices cannot autonomously control energy consumption when filtering air with different levels of pollution, resulting in long-term high-energy-consumption operation, excessive energy consumption, and short service life.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A novel air filter for central air conditioning includes a housing. A controller is fixedly connected to the top of the housing. Multiple connecting plates are detachably connected to the front exterior of the housing. Multiple fixing bolts are inserted through the outer side of the connecting plates and the inner wall of the housing. Two connecting blocks are fixedly connected to the outer side of the connecting plates. A rotating rod is rotatably connected to the inner wall of the multiple connecting blocks. Limit rings are fixedly connected to both ends of the rotating rod. Two L-shaped blocks are fixedly connected to the outer side of the rotating rod. A closed door is fixedly connected to the outer side of the two L-shaped blocks. Z-shaped blocks are fixedly connected to the left and right sides of the housing. An opening and closing assembly providing retraction capability is fixedly connected to the outer side of the Z-shaped blocks. A connecting block is fixedly connected to the outer side of the opening and closing assembly. A connecting plate is fixedly connected to the front exterior of the closed door. A rotating shaft is fixedly connected to the inner wall of the connecting plate. A connecting block is rotatably connected to the outer side of the rotating shaft.
[0007] The aforementioned technical solution includes the housing and its external structure. This structure facilitates the opening and closing of the closed door through opening and closing components and rotating parts. Its advantages include ease of maintenance, quick opening of the closed door, and controllable energy consumption.
[0008] As a further description of the above technical solution:
[0009] The opening and closing assembly includes a second rotating shaft, two third connecting plates, and a cylinder. The second rotating shaft is rotatably connected to the inner wall of the Z-shaped block. The second rotating shaft is rotatably connected to two third connecting plates. A cylinder is fixedly connected to the outside of the two third connecting plates. The output end of the cylinder is fixedly connected to the outside of the second connecting block.
[0010] The above technical solution includes a rotating shaft two, a connecting plate three, and a cylinder in the opening and closing assembly. The rotating shaft two is connected to the Z-shaped block, the connecting plate three fixes the cylinder, and the cylinder connects to the block two, making the opening and closing operation of the closed door more stable and precise, improving maintenance efficiency, and ensuring the normal operation of the filter.
[0011] As a further description of the above technical solution:
[0012] The inner wall of the housing has a slot, and multiple auxiliary wheels are fixedly connected inside the slot. A filter plate is slidably connected inside the slot.
[0013] The above technical solution features a slot on the inner wall of the housing, within which are auxiliary wheels and a slidably connected filter plate. This design facilitates the installation and removal of the filter plate, making filter plate replacement smoother and improving operational efficiency. Simultaneously, the auxiliary wheels ensure stable sliding of the filter plate, enhancing the filter's maintainability.
[0014] As a further description of the above technical solution:
[0015] A pull plate is fixedly connected to the outer right side of the filter plate, and two bolts are used to connect the outer side of the pull plate to the inner wall of the housing.
[0016] The above technical solution allows for easy operation of the filter plate via a pull plate, while the bolts enhance the connection stability between the pull plate and the housing, facilitating the secure installation of the filter plate and subsequent maintenance and replacement.
[0017] As a further description of the above technical solution:
[0018] An air duct is fixedly connected to the outside of the housing, a dustproof plate is fixedly connected to the inside of the air duct, and a suction assembly that provides rotational capability is fixedly connected to the outside of the dustproof plate.
[0019] The above technical solution can enhance the air intake effect, while the dustproof plate can prevent dust from entering, ensure the normal operation of the system, and improve the efficiency and quality of air filtration in the central air conditioning system.
[0020] As a further description of the above technical solution:
[0021] The suction assembly includes a motor, a drive shaft, and multiple fan blades. The motor is fixedly connected to the outside of the dustproof plate, and the output end of the motor is fixedly connected to the drive shaft. The multiple fan blades are fixedly connected to the outside of the drive shaft.
[0022] The above technical solution uses a suction assembly consisting of a motor, a drive shaft, and multiple fan blades. The motor is fixed outside the dust cover, and the drive shaft connects to the motor and drives the fan blades to rotate. This design provides powerful suction, efficiently drawing in air, while the dust cover blocks dust, ensuring the cleanliness of the drawn-in air and improving filtration efficiency.
[0023] As a further description of the above technical solution:
[0024] The air duct is fixedly connected to an outer shell, and a detector is fixedly connected to the top of the casing. The controller is electrically connected to the motor and the cylinder.
[0025] The above technical solution connects the air duct to the outer casing, and the controller on the top of the casing is electrically connected to the motor and cylinder. Its advantages are that it can control the system status in real time, control the operation of the motor and cylinder according to the monitoring results of the detector, ensure the stable operation of the equipment, improve the degree of automation, and facilitate the operation and management of the central air conditioning air filter.
[0026] As a further description of the above technical solution:
[0027] The bottom of the casing is detachably connected to a sealing plate, and two bolts are inserted and connected to the four corners of the sealing plate and the inner wall of the casing. A drain port is provided at the bottom of the casing.
[0028] In the above technical solution, the sealing plate at the bottom of the housing is detachably connected to the inner wall of the housing by bolts at the four corners. This design facilitates operation at the bottom of the housing, facilitates inspection and maintenance of the internal components of the housing, and makes it easier for operators to clean the filter plate.
[0029] This utility model has the following beneficial effects:
[0030] 1. In this utility model, by activating the detector to detect the area of air to be filtered, the cylinder is activated, and the cylinder generates extension and retraction capacity, which drives the closed door connected to the output end of the cylinder to pull the connecting block two to the outside of both sides of the device. The connecting block two drives the rotating shaft one and the connecting plate two to rotate, and the connecting plate two drives the closed door to rotate, thereby adjusting the opening and closing angle of the two closed doors and adjusting the range of air absorption. This structure solves the problem that when filtering air with different levels of pollution, the energy consumption cannot be controlled autonomously, resulting in long-term high energy consumption operation of the device, which leads to excessive energy consumption and short service life of the device.
[0031] 2. In this invention, a motor provides rotational power to drive the negative pole of the drive shaft, causing multiple fan blades connected to the outside of the drive shaft to rotate and facilitating the interaction between the filter plate and the auxiliary wheel. This structure solves the problems of high energy consumption leading to easy damage to the drive mechanism and inconvenience in replacing the internal filter plate. Attached Figure Description
[0032] Figure 1 This is a perspective view of a novel air filter for central air conditioning systems proposed in this utility model.
[0033] Figure 2 This is a schematic diagram of the drain outlet structure of a novel air filter for central air conditioning proposed in this utility model;
[0034] Figure 3 This is a schematic diagram of the air duct structure of a novel air filter for central air conditioning proposed in this utility model.
[0035] Figure 4 This is a schematic diagram of the closed plate structure of a novel air filter for central air conditioning proposed in this utility model;
[0036] Figure 5 This is a schematic diagram of the fan blade structure of a novel air filter for central air conditioning proposed in this utility model;
[0037] Figure 6 This is a cross-sectional view of the air duct structure of a novel air filter for central air conditioning proposed in this utility model.
[0038] Figure 7 for Figure 1 Enlarged view of point A in the middle.
[0039] Figure 8 for Figure 3 Enlarged view of point B in the middle.
[0040] Legend:
[0041] 1. Housing; 2. Connecting plate one; 3. Fixing bolt; 4. Connecting block one; 5. Rotating rod; 6. L-shaped block; 7. Sealing door; 8. Limiting ring; 9. Z-shaped block; 10. Connecting plate two; 11. Rotating shaft one; 12. Connecting block two; 13. Rotating shaft two; 14. Connecting plate three; 15. Cylinder; 16. Filter plate; 17. Pull plate; 18. Bolt one; 19. Auxiliary wheel; 20. Slot; 21. Air duct; 22. Dustproof plate; 23. Motor; 24. Drive shaft; 25. Outer shell; 26. Fan blade; 27. Detector; 28. Sealing plate; 29. Bolt two; 30. Drain outlet. Detailed Implementation
[0042] 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.
[0043] Reference Figures 1 to 8 This utility model provides an embodiment of a novel air filter for central air conditioning, comprising a housing 1, which serves as the outer shell 25 of the entire air filter, providing a space for housing and protecting various internal components. It forms the main frame of the entire device, supporting the installation and operation of other components. A controller 31 is fixedly connected to the top of the housing 1. Multiple connecting plates 2 are detachably connected to the front exterior of the housing 1. Multiple fixing bolts 3 are inserted through the outer surface of the connecting plates 2 and the inner wall of the housing 1. The connecting plates 2 are distributed on the front exterior of the housing 1 and connected to the inner wall of the housing 1 via the fixing bolts 3, serving to connect and reinforce the structure of the housing 1, ensuring its stability during long-term use and operation. They also provide support for the installation of subsequent components such as connecting blocks 4, facilitating disassembly and assembly of the front of the housing 1 for operation and maintenance of internal components. Two connecting blocks 4 are fixedly connected to the outside of the connecting plate 2. Their inner walls are rotatably connected to the rotating rod 5, providing a rotational support point for the rotating rod 5. This ensures the rotating rod 5 can rotate stably within a certain range, thereby driving the connected L-shaped block 6 and the closed door 7 to open and close, allowing the closed door 7 to flexibly open and close around this rotation point. The inner walls of multiple connecting blocks 4 are rotatably connected to the rotating rod 5. Limit rings 8 are fixedly connected to both the upper and lower ends of the rotating rod 5. The rotating rod 5 acts as a connecting component, connecting the connecting blocks 4 and the L-shaped blocks 6 to transmit power. Two L-shaped blocks 6 are fixedly connected to the outside of the rotating rod 5. The closed door 7 is fixedly connected to the outside of the two L-shaped blocks 6. The L-shaped blocks 6 are fixed to the outside of the rotating rod 5, transmitting the rotational motion of the rotating rod 5 to the closed door 7, allowing the closed door 7 to open or close with the rotation of the rotating rod 5. Z-shaped blocks 9 are fixedly connected to the left and right sides of the housing 1, providing a stable mounting position for the opening and closing components. The Z-shaped block 9 is externally fixedly connected to an opening and closing assembly that provides retraction capability. The opening and closing assembly is externally fixedly connected to a connecting block 2 12. The front side of the closed door 7 is fixedly connected to a connecting plate 2 10. The inner wall of the connecting plate 2 10 is fixedly connected to a rotating shaft 11. The external side of the rotating shaft 11 is rotatably connected to the connecting block 2 12.
[0044] The opening and closing assembly includes a rotating shaft 13, two connecting plates 14, and a cylinder 15. The rotating shaft 13 is rotatably connected to the inner wall of the Z-shaped block 9, serving as the rotational support point for the opening and closing assembly, allowing the entire assembly to rotate around the shaft at a certain angle. The rotating shaft 13 is rotatably connected to the inner wall of the Z-shaped block 9, and two connecting plates 14 are rotatably connected to the outside of the rotating shaft 13. A cylinder 15 is fixedly connected to the outside of the two connecting plates 14, and the output end of the cylinder 15 is fixedly connected to the outside of the connecting block 12. A slot 20 is provided on the inner wall of the housing 1, providing a sliding track for the filter plate 16, allowing the filter plate 16 to smoothly enter and exit within the slot 20. The slot 20 is internally fixedly connected to multiple auxiliary wheels 19. The slot 20 is internally slidably connected to a filter plate 16. The outer right side of the filter plate 16 is fixedly connected to a pull plate 17. The outer side of the pull plate 17 is connected to the inner wall of the housing 1 by two bolts 18. The outer side of the housing 1 is fixedly connected to an air duct 21. The air duct 21 is internally fixedly connected to a dustproof plate 22. The outer side of the dustproof plate 22 is fixedly connected to a suction assembly that provides rotation capability.
[0045] The suction assembly includes a motor 23, a drive shaft 24, and multiple fan blades 26. The motor 23 is externally fixed to the outside of the dustproof plate 22. The output end of the motor 23 is fixedly connected to the drive shaft 24. The multiple fan blades 26 are fixedly connected to the outside of the drive shaft 24. The air duct 21 is externally fixedly connected to a housing 25. A detector 27 is fixedly connected to the top of the housing 1 to detect air quality and control the start of the motor 23 and the cylinder 15. The controller 31 is electrically connected to the motor 23 and the cylinder 15. A sealing plate 28 is detachably connected to the bottom of the housing 1. Bolts 29 are inserted through the four corners of the sealing plate 28 and the inner wall of the housing 1. A drain port is provided at the bottom of the housing 1.
[0046] Working principle: Detector 27 is activated to detect indoor air quality. Activation of cylinder 15 generates extension and retraction capacity. The output end of cylinder 15 pulls connecting block 12, which drives rotating shaft 11 and connecting plate 10 to rotate. Connecting plate 10 drives the closed door 7 to rotate, thereby adjusting the opening and closing angles of the two closed doors 7. When the indoor air quality is high, the opening and closing angles are smaller, expanding the air absorption range; when the outside air quality is low, the opening and closing angles are larger, reducing the air absorption range. Simultaneously, detector 27 transmits the detection signal to controller 31. Controller 31 controls motor 23 and cylinder 15 to start, and motor 23 drives the drive... The rotation of shaft 24 causes multiple fan blades 26 connected to the outside of drive shaft 24 to rotate. When the outside air quality is low, the speed of drive shaft 24 is high. When the outside air quality is high, the vortex suction force is stronger and more air is absorbed. When the speed of drive shaft 24 is relatively low, the vortex suction force is weaker and less air is absorbed. When outside air is drawn into the device, it is filtered by filter plate 16 to remove pollutant particles. When the device is used for a long time, the number of pollutant particles inside will increase. The operator can loosen bolt 29 to remove the sealing plate 28 and use a soft brush to gently scrape off the pollutant particles outside the filter plate 16, which are then discharged through 30.
[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 novel air filter for central air conditioning, comprising a housing (1), characterized in that: A controller (31) is fixedly connected to the top of the housing (1). Multiple connecting plates (2) are detachably connected to the front of the housing (1). Multiple fixing bolts (3) are inserted through the outer side of the connecting plates (2) and the inner wall of the housing (1). Two connecting blocks (4) are fixedly connected to the outer side of the connecting plates (2). Rotating rods (5) are rotatably connected to the inner walls of the multiple connecting blocks (4). Limiting rings (8) are fixedly connected to both the upper and lower ends of the rotating rods (5). Two L-shaped rings are fixedly connected to the outer side of the rotating rods (5). Block (6), two L-shaped blocks (6) are fixedly connected to the outside of a closed door (7), Z-shaped blocks (9) are fixedly connected to the left and right sides of the housing (1), the Z-shaped blocks (9) are fixedly connected to the outside of an opening and closing assembly that provides retraction capability, the opening and closing assembly is fixedly connected to the outside of a connecting block two (12), the front side of the closed door (7) is fixedly connected to a connecting plate two (10), the inner wall of the connecting plate two (10) is fixedly connected to a rotating shaft one (11), and the rotating shaft one (11) is rotatably connected to the outside of the connecting block two (12).
2. The novel air filter for central air conditioning according to claim 1, characterized in that: The opening and closing assembly includes a second rotating shaft (13), two third connecting plates (14), and a cylinder (15). The second rotating shaft (13) is rotatably connected to the inner wall of the Z-shaped block (9). The second rotating shaft (13) is rotatably connected to two third connecting plates (14). The cylinder (15) is fixedly connected to the outside of the two third connecting plates (14). The output end of the cylinder (15) is fixedly connected to the outside of the second connecting block (12).
3. A novel air filter for central air conditioning according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a slot (20), and a plurality of auxiliary wheels (19) are fixedly connected inside the slot (20). A filter plate (16) is slidably connected inside the slot (20).
4. A novel air filter for central air conditioning according to claim 3, characterized in that: A pull plate (17) is fixedly connected to the outer right side of the filter plate (16), and two bolts (18) are inserted through the outer side of the pull plate (17) and the inner wall of the housing (1).
5. A novel air filter for central air conditioning according to claim 2, characterized in that: The outer side of the housing (1) is fixedly connected to an air duct (21), the inner side of the air duct (21) is fixedly connected to a dustproof plate (22), and the outer side of the dustproof plate (22) is fixedly connected to a suction assembly that provides rotational capability.
6. A novel air filter for central air conditioning according to claim 5, characterized in that: The suction assembly includes a motor (23), a drive shaft (24), and multiple fan blades (26). The motor (23) is fixedly connected to the outside of the dustproof plate (22), and the output end of the motor (23) is fixedly connected to the drive shaft (24). The multiple fan blades (26) are fixedly connected to the outside of the drive shaft (24).
7. A novel air filter for central air conditioning according to claim 6, characterized in that: The air duct (21) is fixedly connected to the outer shell (25), the top of the housing (1) is fixedly connected to the detector (27), and the controller (31) is electrically connected to the motor (23) and the cylinder (15).
8. A novel air filter for central air conditioning according to claim 1, characterized in that: The bottom of the housing (1) is detachably connected to a sealing plate (28), and bolts (29) are inserted and connected to the four corners of the sealing plate (28) and the inner wall of the housing (1). A drain port (30) is provided at the bottom of the housing (1).