Central air conditioning self-cleaning return air inlet filter grid

Abstract

The utility model discloses central air conditioning uses self -cleaning type return air inlet filter screen frame, including setting filter screen body, the filter screen body outside is provided with mounting seat, the mounting seat sets up in the inside of mounting box, the inside of mounting box is provided with drive assembly, is connected with cleaning spare on drive assembly, cleaning spare is located back, the surface of cleaning spare is equipped with the softness brush hair for cleaning. Central air conditioning uses self -cleaning type return air inlet filter screen frame, filter screen body conveniently will central air conditioning return air inlet air dust and impurity and carry out the isolation, and the movement of moving block will drive cleaning spare synchronous movement, and the softness brush hair on the surface of cleaning spare will wipe and clean filter screen body back, has realized the preliminary cleaning of automation, has reduced manual cleaning workload, has improved cleaning efficiency, has reduced the cost increase problem of needing multiple dismounting filter screen body to lead, has improved the service life of filter screen body.

Description

Technical Field

[0001] This utility model relates to the technical field of central air conditioning, specifically to a self-cleaning return air vent filter frame for central air conditioning. Background Technology

[0002] In a central air conditioning system, the return air vent draws some indoor air back to the air conditioning unit through the return air duct, mixes it with a small amount of fresh air, and then sends it back into the room to regulate the indoor temperature. However, in order to prevent dust from entering the air conditioning system, a filter screen is usually installed at the return air vent to intercept it. However, the current filter screen design is inconvenient to disassemble, which brings great difficulties to maintenance personnel in cleaning and maintenance, affecting the normal operation of the air conditioning system and air quality.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent CN218721895U, published on March 24, 2023) provides a return air vent structure for a central air conditioning system, including a mounting plate. A first slot is formed on the inner wall of the mounting plate, and a locking block is movably connected inside the first slot. A connecting plate is fixedly connected to one side of the locking block, and a fixing plate is fixedly connected to one side of the connecting plate. A fixing rod is fixedly connected to the front of the fixing plate, and a movable plate is movably connected to the outer wall of the fixing rod. A locking plate is fixedly connected to one side of the movable plate. A second slot is formed on the inner wall of the mounting plate, and a matching groove is formed at the bottom of the connecting plate. This return air vent structure for a central air conditioning system allows for good disassembly, facilitating the removal of the internal filter structure and enabling users to clean the filter structure, thus improving the subsequent return air efficiency and enhancing the practicality of the return air vent structure.

[0004] While existing technologies achieve filter structure disassembly through the use of locking blocks and movable plates, these blocks and plates are prone to wear during frequent disassembly and installation over long periods, leading to reduced durability. This not only affects the smoothness of disassembly and installation, reducing the overall service life, but also increases production and maintenance costs due to frequent filter disassembly.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing self-cleaning return air vent filter frame for central air conditioning systems. Therefore, we propose that the self-cleaning return air vent filter frame for central air conditioning systems can effectively solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a self-cleaning return air vent filter frame for central air conditioning, in order to solve the problem mentioned in the background art that the current market uses a combination of clips and movable plates to disassemble the filter structure. However, during long-term and frequent disassembly and installation, the clips and movable plates are prone to wear, resulting in reduced durability. This not only affects the smoothness of disassembly and installation and reduces the overall service life, but also increases production and maintenance costs due to frequent filter disassembly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning return air vent filter frame for central air conditioning, comprising a filter body, an mounting base on the outside of the filter body, the mounting base being disposed inside a mounting box, a drive assembly being disposed inside the mounting box, a cleaning component being connected to the drive assembly, the cleaning component being located on the back side, and soft bristles for cleaning being mounted on the surface of the cleaning component.

[0008] Preferably, the drive assembly includes a drive box installed inside the mounting box, a motor installed inside the drive box, a screw connected to the output end of the motor, and the screw extending through the drive box into the interior of the mounting box.

[0009] Preferably, a movable block is provided on the outer side of the screw, the movable block is located at both ends of the cleaning component, and a guide rod is installed inside the screw. The guide rod is arranged parallel to the screw and is connected through the inside of the movable block.

[0010] Preferably, the surface of the cleaning component has a through hole, and a squeezing block is installed on the upper end of the moving block.

[0011] Preferably, the mounting box contains a storage box, and the storage box contains a conveying airbag. The conveying airbag is located at the upper end of the extrusion block, and the input end of the conveying airbag is connected to the outside gas through a pipe.

[0012] Preferably, the output end of the delivery airbag is connected to the jet component through a delivery pipe, and both the pipe and the delivery pipe are equipped with a one-way valve. The jet component is installed inside the mounting box, and a receiving box is provided inside the mounting box, with the receiving box located at the bottom of the jet component.

[0013] Preferably, a rotating rod is connected to the outside of the screw via a driving component, and a cam is provided on the outside of the rotating rod.

[0014] Preferably, the mounting box is provided with an auxiliary component, which includes a movable rod installed inside the mounting box. A movable plate is installed at one end of the movable rod and is located above the cam. A striking plate is provided at the other end of the movable rod and is located at the bottom of the mounting base. A spring is installed on the movable plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This self-cleaning return air vent filter frame for central air conditioning facilitates the isolation of dust and impurities in the air from the central air conditioning return vent. The movement of the moving block drives the cleaning component to move synchronously, and the soft bristles on the surface of the cleaning component wipe and clean the back of the filter body, achieving automated preliminary cleaning, reducing manual cleaning workload, improving cleaning efficiency, reducing the cost increase caused by the need for multiple disassemblies and reassemblies of the filter body, and extending the service life of the filter body. The specific details are as follows:

[0016] (1) The soft bristles on the surface of the cleaning component will wipe and clean the back of the filter body, realizing automated preliminary cleaning, reducing the amount of manual cleaning work, improving cleaning efficiency, reducing the cost increase caused by the need to disassemble and reassemble the filter body multiple times, and improving the service life of the filter body.

[0017] (2) The gas inside the airbag is delivered to the jetting component through the delivery pipe. The jetting component sprays out gas to clean the cleaning component, thus achieving self-cleaning of the cleaning component. This avoids the cleaning effect being affected by the accumulation of impurities in the cleaning component due to long-term use, and ensures the continuity and effectiveness of the cleaning work.

[0018] (3) The through holes on the cleaning parts facilitate the cleaning of the soft bristles on the surface by the gas. The dust and other impurities blown off will fall into the receiving box below for easy collection and cleaning. The one-way valves on the pipeline and the delivery pipeline ensure the one-way flow of gas, ensuring that the cleaning process is stable and orderly.

[0019] (4) The rotating rod is driven by the driving component, and the cam on the outside of the rotating rod also rotates. The driving component is set to ensure stable transmission and is convenient to replace other driving structures according to cost, which reduces the modification cost and maintenance difficulty of the equipment.

[0020] (5) The cam will intermittently push up the moving plate, causing the striking plate to hit the bottom of the mounting base, which helps to remove dust and other impurities from the surface of the filter body, enhancing the cleaning effect. The spring on the moving plate makes it easy to pull the moving plate back to its original position, realizing the cyclical operation of vibration cleaning and improving the overall cleaning efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the mounting box of this utility model;

[0024] Figure 4This is a schematic diagram of the connection structure between the screw and the moving block of this utility model;

[0025] Figure 5 This is a schematic diagram of the connection structure between the delivery airbag and the delivery pipeline of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure between the rotating rod and the cam in this utility model;

[0027] Figure 7 This is a schematic diagram of the connection structure between the movable plate and the movable rod of this utility model.

[0028] In the diagram: 1. Filter body; 2. Mounting base; 3. Mounting box; 4. Drive box; 5. Motor; 6. Screw; 7. Moving block; 8. Cleaning component; 9. Guide rod; 10. Soft bristles; 11. Through hole; 12. Extrusion block; 13. Storage box; 14. Conveying airbag; 15. Conveying pipe; 16. Air jet component; 17. Receiving box; 18. Rotating rod; 19. Cam; 20. Moving plate; 21. Moving rod; 22. Impact plate; 23. Spring. Detailed Implementation

[0029] 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.

[0030] Example 1: In this example, the soft bristles 10 on the surface of the cleaning component 8 wipe and clean the back of the filter body 1, achieving automated preliminary cleaning and reducing the increased costs caused by the need for multiple disassemblies and reassemblies of the filter body 1. Figures 1-4The technical solution shown includes a filter body 1, a mounting base 2 on the outside of the filter body 1, and a mounting box 3 inside the mounting box 3. A drive assembly is located inside the mounting box 3, and a cleaning component 8 is connected to the drive assembly. The cleaning component 8 is located on the back side and has soft bristles 10 for cleaning on its surface. The drive assembly includes a drive box 4 installed inside the mounting box 3, a motor 5 installed inside the drive box 4, and a screw 6 connected to the output end of the motor 5. The screw 6 extends through the drive box 4 into the mounting box 3. Moving blocks 7 are located on the outside of the screw 6 at both ends of the cleaning component 8, and guide rods 9 are installed inside the moving blocks 7. The guide rods 9 are parallel to the screw 6 and are connected through the moving blocks 7. The filter body 1 is mounted on the mounting base 2, which facilitates the isolation of dust and impurities in the air from the central air conditioning return vent, effectively ensuring the cleanliness of the air conditioning system and extending the service life of the equipment. 2. The filter body 1 is installed inside the mounting box 3, which facilitates the disassembly of the filter body 1 via the mounting base 2, making daily inspection and maintenance operations more convenient, reducing the difficulty of manual operation and maintenance costs. When it is necessary to clean the filter body 1, the motor 5 in the drive box 4 is turned on. The output end of the motor 5 drives the screw 6 to rotate. When the screw 6 rotates, the outer moving block 7 will move along the length direction of the screw 6 due to the thread engagement with the screw 6. At the same time, the guide rod 9 guides the moving block 7 to ensure its stable movement. Since the moving block 7 is connected to both ends of the cleaning component 8, the movement of the moving block 7 will drive the cleaning component 8 to move synchronously. The soft bristles 10 on the surface of the cleaning component 8 will wipe and clean the back of the filter body 1, realizing automated preliminary cleaning, reducing the amount of manual cleaning work, improving cleaning efficiency, reducing the cost increase caused by the need to disassemble and reassemble the filter body 1 multiple times, and improving the service life of the filter body 1.

[0031] Example 2: In this example, the jetting component 16 sprays gas to clean the cleaning component 8, preventing the cleaning effect from being affected by the accumulation of impurities in the cleaning component 8 due to long-term use, and ensuring the continuity and effectiveness of the cleaning work. Specifically, as follows... Figures 3-5As shown, the cleaning component 8 has a through hole 11 on its surface. A squeezing block 12 is installed on the upper end of the moving block 7. A storage box 13 is provided inside the mounting box 3, and a conveying airbag 14 is installed inside the storage box 13. The conveying airbag 14 is located above the squeezing block 12. The input end of the conveying airbag 14 is connected to external gas via a pipe, and the output end of the conveying airbag 14 is connected to the jet component 16 via a conveying pipe 15. Both the pipe and the conveying pipe 15 are equipped with one-way valves. The jet component 16 is installed inside the mounting box 3, and a receiving box 17 is located inside the mounting box 3 at the bottom of the jet component 16. During the movement of the moving block 7, the squeezing block 12 at its upper end moves accordingly. When the squeezing block 12 moves to the conveying airbag 14, it continuously squeezes the conveying airbag 14 inside the storage box 13. When the cleaning component 8 moves to the surface of the jet component 16... The valve on the delivery airbag 14 opens due to pressure, allowing internal gas to be delivered to the jetting component 16 through the delivery pipe 15. The jetting component 16 sprays gas to clean the cleaning component 8, achieving self-cleaning of the cleaning component 8. This prevents the cleaning component 8 from accumulating impurities due to long-term use, thus ensuring the continuity and effectiveness of the cleaning work. The through hole 11 on the cleaning component 8 facilitates the cleaning of the soft bristles 10 on the surface by the gas, further improving the cleaning effect. Dust and other impurities blown off fall into the receiving box 17 below for easy collection and cleaning, keeping the inside of the installation box 3 clean. After the squeezing block 12 is removed, the delivery airbag 14 draws in gas from the outside through the input pipe to prepare for the next jetting. The one-way valves on the pipe and the delivery pipe 15 ensure unidirectional gas flow, prevent gas backflow, and ensure that the cleaning process is stable and orderly.

[0032] Example 3: In this example, the striking plate 22 strikes the bottom of the mounting base 2, causing the filter body 1 to vibrate, thus enhancing the cleaning effect. Specifically, as follows... Figures 3-7As shown, a rotating rod 18 is connected to the outside of the screw 6 via a driving component. A cam 19 is provided on the outside of the rotating rod 18. An auxiliary component is provided inside the mounting box 3. The auxiliary component includes a moving rod 21 installed inside the mounting box 3. A moving plate 20 is installed at one end of the moving rod 21, which is located above the cam 19. A striking plate 22 is provided at the other end of the moving rod 21, which is located at the bottom of the mounting base 2. A spring 23 is installed on the moving plate 20. When the screw 6 rotates, it drives the rotating rod 18 to rotate via the driving component. The cam 19 on the outside of the rotating rod 18 also rotates accordingly. The driving component is a belt and pulley transmission structure. This structure not only provides stable transmission but also facilitates the replacement of other driving structures according to cost, reducing the modification cost and maintenance of the equipment. The difficulty lies in the fact that when cam 19 rotates, it intermittently pushes up the moving plate 20, which in turn moves the moving rod 21. The striking plate 22 at the other end of the moving rod 21 strikes the bottom of the mounting base 2, causing the filter body 1 to vibrate. This helps to remove dust and other impurities from its surface. The vibration cleaning method, combined with brush wiping and air jet cleaning, creates multiple cleaning effects, greatly enhancing the cleaning effect. When cam 19 leaves the bottom of the moving plate 20, the spring 23 on the moving plate 20 returns to its original state, pulling the moving plate 20 back to its original position. This achieves the cyclical operation of vibration cleaning, improving the overall cleaning efficiency and effectively ensuring the air intake quality of the air conditioning system. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A self-cleaning return air inlet filter screen frame for central air conditioning, comprising a filter screen body (1) arranged, characterized in that, The filter body (1) is provided with a mounting base (2) on the outside. The mounting base (2) is located inside the mounting box (3). The mounting box (3) is provided with a drive assembly. A cleaning component (8) is connected to the drive assembly. The cleaning component (8) is located on the back side. Soft bristles (10) for cleaning are installed on the surface of the cleaning component (8).

2. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 1, characterized in that: The drive assembly includes a drive box (4) installed inside the mounting box (3), a motor (5) is installed inside the drive box (4), and a screw (6) is connected to the output end of the motor (5). The screw (6) extends through the drive box (4) into the mounting box (3).

3. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 2, characterized in that: A movable block (7) is provided on the outside of the screw (6). The movable block (7) is provided at both ends of the cleaning component (8). A guide rod (9) is installed inside the movable block (7). The guide rod (9) is arranged parallel to the screw (6). The guide rod (9) is connected through the movable block (7).

4. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 3, characterized in that: The cleaning component (8) has a through hole (11) on its surface, and the moving block (7) has a squeezing block (12) installed on its upper end.

5. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 1, characterized in that: The mounting box (3) is provided with a storage box (13), and the storage box (13) is provided with a conveying airbag (14). The conveying airbag (14) is located at the upper end of the extrusion block (12), and the input end of the conveying airbag (14) is connected to the outside gas through a pipe.

6. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 5, characterized in that: The output end of the delivery airbag (14) is connected to the jet component (16) through the delivery pipe (15), and both the pipe and the delivery pipe (15) are equipped with a one-way valve. The jet component (16) is installed inside the mounting box (3), and a receiving box (17) is provided inside the mounting box (3). The receiving box (17) is located at the bottom of the jet component (16).

7. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 3, characterized in that: The screw (6) is connected to a rotating rod (18) via a drive component on its outer side, and a cam (19) is provided on the outer side of the rotating rod (18).

8. The self-cleaning return air inlet filter screen frame for central air conditioning according to claim 1, characterized in that: The mounting box (3) is provided with an auxiliary component, which includes a moving rod (21) installed inside the mounting box (3). A moving plate (20) is installed at one end of the moving rod (21) and the moving plate (20) is located above the cam (19). A striking plate (22) is provided at the other end of the moving rod (21) and the striking plate (22) is located at the bottom of the mounting base (2). A spring (23) is installed on the moving plate (20).

Images