Moistureproof automobile filter
By introducing a rotating frame and chain drive system into the automotive filter, the desiccant is automatically alternated during the dehydration process, ensuring continuous operation of the filter element. This solves the problem of reduced cleaning efficiency in existing technologies and improves moisture-proof efficiency and ease of replacement.
Patent Information
- Application Number
- CN202520430909.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-12
AI Technical Summary
In the prior art, when silica gel desiccant is used for dehydration, the filter element cannot continue to remove particulate impurities in the air inside the car, resulting in reduced removal efficiency.
A moisture-proof automotive filter was designed, employing a rotating frame structure and a chain drive system. A humidity sensor detects the air humidity, and a motor is started to drive the sprocket and rotating plate, causing the desiccant to alternately remove water, ensuring continuous operation of the filter element. The desiccant is dried by a fan and a heating element.
It improves moisture-proof efficiency, ensuring that the filter element can continue to remove particulate impurities during desiccant dehydration treatment, simplifies the replacement process of filter element and desiccant, and improves installation and disassembly efficiency.
Smart Images

Figure CN223821426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air filter technology, and in particular to a moisture-proof automotive filter. Background Technology
[0002] A car air filter is an item used to remove particulate impurities from the air inside a car. Car cabin air filters effectively reduce pollutants entering the car through the heating, ventilation, and air conditioning systems, preventing the inhalation of harmful pollutants. Car air filters provide a cleaner in-car environment. As a car accessory, a car air filter consists of a filter element and a housing. Its main requirements are high filtration efficiency, low flow resistance, and the ability to be used continuously for extended periods without maintenance.
[0003] In the prior art, such as the moisture-proof car filter described in Chinese patent CN 221113455 U, there is a lower housing, an upper housing, and silica gel desiccant and a filter element located inside the lower and upper housings. A partition is installed inside the lower housing, positioned between the silica gel desiccant and the filter element. An external vent is provided inside the partition, and a movable plate is slidably installed inside the partition. An internal vent is provided inside the movable plate, and a humidity sensor is installed on the side of the partition closest to the silica gel desiccant. This moisture-proof car filter, by using the partition, utilizes a stepper motor to drive a circular turntable to rotate when dehydration of the silica gel desiccant is required. This causes a short rod to push the movable plate, misaligning the external and internal vents, thereby blocking the external vent and preventing moisture from entering the filter element. However, this patent still has the following problems.
[0004] In the aforementioned patent, although hot air is delivered to the silica gel desiccant by a fan to heat and dry the silica gel desiccant, thus removing water from the silica gel desiccant, the filter element cannot continue to remove particulate impurities from the air inside the car while the silica gel desiccant is being dehydrated, thereby reducing the removal efficiency. Utility Model Content
[0005] The purpose of this invention is to solve the problem in the prior art that when silica gel desiccant is used for dehydration, the filter element cannot continue to remove particulate impurities in the air inside the car, thus reducing the removal efficiency. Therefore, this invention proposes a moisture-proof car filter.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a moisture-proof automotive filter, comprising a first housing, a second housing disposed on the top of the first housing, a rotating frame rotatably mounted inside the first housing, multiple evenly distributed through holes penetrating the bottom surface and side walls of the rotating frame, a partition fixedly mounted on the inner wall of the rotating frame, two desiccants disposed inside the rotating frame, a rotating plate fixedly mounted on the bottom of the rotating frame, a rotating shaft fixedly mounted on the bottom of the rotating plate, a second sprocket fixedly mounted on the bottom of the rotating shaft penetrating the first housing, a motor fixedly mounted on the bottom surface of the first housing, the output end of the motor penetrating the first housing and fixedly mounted on a first sprocket, a chain sleeved on the outer walls of the first sprocket and the second sprocket, a connecting frame fixedly mounted on the inner wall of the first housing, a humidity sensor fixedly mounted on one end of the connecting frame, a protective frame fixedly mounted on the bottom of the first housing, and a baffle fixedly mounted on the bottom surface of the first housing.
[0007] Preferably, connecting plates are fixedly installed on both sides of the outer surface of the first housing. A slot is provided on the top of the connecting plate. A limiting groove is provided on the inner wall of the slot. A spring is fixedly installed on the inner wall of the limiting groove. A locking block is fixedly installed on one end of the spring. A connecting rod is fixedly installed on the end of the locking block near the spring. A pull plate is fixedly installed on the end of the connecting rod away from the locking block through the connecting plate.
[0008] Preferably, a fixing plate is fixedly installed on both sides of the outer surface of the second housing, and an insert plate is fixedly installed at the bottom of the fixing plate, with a slot provided on the outer wall of the insert plate.
[0009] Preferably, a sealing groove is provided on the top of the first housing, and a sealing ring is fixedly installed on the bottom of the second housing.
[0010] Preferably, a filter element is provided at one end of the connecting frame.
[0011] Preferably, an air outlet pipe is installed through and fixedly mounted on the bottom of the first housing, and an air inlet pipe is installed through and fixedly mounted on the top of the second housing.
[0012] Preferably, a fan is fixedly installed at the bottom of the first housing, the output end of the fan penetrates through the first housing and enters the interior of the first housing, and a heating tube is fixedly installed at the input end of the fan, with a second valve provided on the outer wall of the heating tube.
[0013] Preferably, an exhaust pipe is installed through and fixedly mounted on the top of the second housing, and a first valve is provided on the top of the exhaust pipe.
[0014] Preferably, the outer wall of the insert plate is fitted with the inner wall of the slot, and the inner wall of the slot is fitted with the outer wall of the card block.
[0015] Preferably, the top of the rotating frame is in contact with the inner top surface of the second housing.
[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0017] 1. In this utility model, when the humidity sensor detects that the air humidity passing through the desiccant is high, it indicates that the desiccant's water absorption capacity will gradually decrease. Therefore, the desiccant needs to be dehydrated. The operator starts the motor, and the output end of the motor rotates, which in turn drives the first sprocket to rotate. This, in turn, drives the second sprocket to rotate via the chain. When the second sprocket rotates, it drives the rotating plate and rotating frame to rotate via the rotating shaft until the rotating frame rotates 180 degrees. At this time, another desiccant moves to the humidity sensor and can start moisture prevention. After the desiccant that needs to be dehydrated is dried, it returns and repeats the process, which improves the moisture prevention efficiency.
[0018] 2. In this utility model, when the filter element or desiccant needs to be replaced, the operator pulls two pull plates. The pull plates drive the locking block to move through the connecting rod. The locking block leaves the slot, and the spring is compressed. At this time, the operator can pull the insert plate out of the slot, remove the second housing, replace the filter element or desiccant, and then insert the insert plate into the slot. The pull plates are then released, and the spring force pushes the locking block into the slot, thus completing the installation and improving the efficiency of installation and disassembly. Attached Figure Description
[0019] Figure 1 A three-dimensional view of a moisture-proof automotive filter is provided for this utility model;
[0020] Figure 2 This utility model presents a moisture-proof automotive filter from another perspective.
[0021] Figure 3 A perspective view of the internal structure of the first housing of a moisture-proof automotive filter is provided for this utility model.
[0022] Figure 4 A first sectional view of the housing of a moisture-proof automotive filter is provided for this utility model;
[0023] Figure 5 A perspective view of the rotating frame of a moisture-proof automotive filter is provided for this utility model;
[0024] Figure 6 A cross-sectional view of the connecting plate of a moisture-proof automotive filter is provided for this utility model.
[0025] Figure 7 for Figure 4 Enlarged view of point A.
[0026] Legend: 1. First housing; 2. Second housing; 3. Inlet pipe; 4. Exhaust pipe; 5. First valve; 6. Connecting plate; 7. Fixing plate; 8. Outlet pipe; 9. Fan; 10. Heating element; 11. Second valve; 12. Protective frame; 13. Baffle; 14. Rotating frame; 15. Partition; 16. Desiccant; 17. Through hole; 18. Connecting frame; 19. Filter element; 20. Humidity sensor; 21. Motor; 22. First sprocket; 23. Second sprocket; 24. Chain; 25. Rotating plate; 26. Shaft; 27. Insert plate; 28. Slot; 29. Slot; 30. Limiting slot; 31. Spring; 32. Locking block; 33. Connecting rod; 34. Pull plate; 35. Sealing groove; 36. Sealing ring. Detailed Implementation
[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0029] Example 1, as Figures 1-7 As shown, this utility model provides a moisture-proof car filter, including a first housing 1, a second housing 2 at the top of the first housing 1, a rotating frame 14 rotatably mounted inside the first housing 1, multiple evenly distributed through holes 17 penetrating the bottom and side walls of the rotating frame 14, a partition 15 fixedly mounted on the inner wall of the rotating frame 14, two desiccants 16 disposed inside the rotating frame 14, a rotating plate 25 fixedly mounted at the bottom of the rotating frame 14, a rotating shaft 26 fixedly mounted at the bottom of the rotating plate 25, a second sprocket 23 fixedly mounted at the bottom of the rotating shaft 26 penetrating the first housing 1, a motor 21 fixedly mounted on the bottom surface of the first housing 1, a first sprocket 22 fixedly mounted at the output end of the motor 21 penetrating the first housing 1, a chain 24 sleeved on the outer walls of the first sprocket 22 and the second sprocket 23, a connecting frame 18 fixedly mounted on the inner wall of the first housing 1, a humidity sensor 20 fixedly mounted at one end of the connecting frame 18, a protective frame 12 fixedly mounted at the bottom of the first housing 1, and a baffle 13 fixedly mounted on the bottom surface of the first housing 1.
[0030] The overall effect of Embodiment 1 is that when the humidity sensor 20 detects that the air humidity passing through the desiccant 16 is high, it indicates that the desiccant 16's water absorption capacity will gradually decrease. Therefore, the desiccant 16 needs to be dehydrated. The operator starts the motor 21, and the output end of the motor 21 rotates, which in turn drives the first sprocket 22 to rotate. This, in turn, drives the second sprocket 23 to rotate via the chain 24. When the second sprocket 23 rotates, it drives the rotating plate 25 and the rotating frame 14 to rotate via the rotating shaft 26 until the rotating frame 14 rotates 180 degrees. At this time, another desiccant 16 moves to the side of the humidity sensor 20, and moisture prevention can begin. After the desiccant 16 that needs to be dehydrated is dried, it returns and repeats the process, improving the moisture prevention efficiency.
[0031] Example 2, as Figures 1-7 As shown, further, connecting plates 6 are fixedly installed on both sides of the outer side of the first housing 1. A slot 29 is opened on the top of the connecting plate 6. A limiting groove 30 is opened on the inner wall of the slot 29. A spring 31 is fixedly installed on the inner wall of the limiting groove 30. A locking block 32 is fixedly installed on one end of the spring 31. A connecting rod 33 is fixedly installed on the end of the locking block 32 near the spring 31. The end of the connecting rod 33 away from the locking block 32 passes through the connecting plate 6 and is fixedly installed with a pull plate 34.
[0032] Furthermore, fixing plates 7 are fixedly installed on both sides of the outer surface of the second housing 2, and insert plates 27 are fixedly installed at the bottom of the fixing plates 7. The outer wall of the insert plates 27 has a slot 28.
[0033] Furthermore, a sealing groove 35 is provided on the top of the first housing 1, and a sealing ring 36 is fixedly installed on the bottom of the second housing 2 to increase the sealing performance.
[0034] Furthermore, a filter element 19 is provided at one end of the connecting frame 18.
[0035] Furthermore, an air outlet pipe 8 is installed through and fixedly mounted on the bottom of the first housing 1, and an air inlet pipe 3 is installed through and fixedly mounted on the top of the second housing 2.
[0036] Furthermore, a fan 9 is fixedly installed at the bottom of the first housing 1. The output end of the fan 9 passes through the first housing 1 and enters the interior of the first housing 1. A heating tube 10 is fixedly installed at the input end of the fan 9. A second valve 11 is provided on the outer wall of the heating tube 10.
[0037] Furthermore, an exhaust pipe 4 is installed through and fixedly mounted on the top of the second housing 2, and a first valve 5 is provided on the top of the exhaust pipe 4.
[0038] Furthermore, the outer wall of the insert plate 27 fits against the inner wall of the slot 29, and the inner wall of the card slot 28 fits against the outer wall of the card block 32. When the card block 32 enters the card slot 28, the insert plate 27 can be fixed in place and will not shake.
[0039] Furthermore, the top of the rotating frame 14 is fitted to the inner top surface of the second housing 2 to prevent air leakage.
[0040] The effect achieved by the entire embodiment 2 is that when the filter element 19 or desiccant 16 needs to be replaced, the operator pulls the two pull plates 34. The pull plates 34 drive the locking block 32 to move through the connecting rod 33. The locking block 32 leaves the slot 28, and the spring 31 is compressed. At this time, the operator can pull the insert plate 27 out of the slot 29, remove the second housing 2, replace the filter element 19 or desiccant 16, and then insert the insert plate 27 into the slot 29. The pull plates 34 are released, and the elastic force of the spring 31 pushes the locking block 32 into the slot 28. At this time, the installation can be completed, which improves the efficiency of installation and disassembly.
[0041] Working principle: During use, the operator introduces air from inside the car into the air intake pipe 3. The air comes into contact with the desiccant 16. The moisture in the air is filtered by the desiccant 16 and then comes into contact with the filter element 19 through the connecting frame 18. After being filtered by the filter element 19, it leaves through the air outlet pipe 8. When the humidity sensor 20 detects that the humidity of the air passing through the desiccant 16 is high, it indicates that the desiccant 16's water absorption capacity will gradually decrease. Therefore, the desiccant 16 needs to be dehydrated. The operator starts the motor 21. The output end of the motor 21 rotates, which in turn drives the first sprocket 22 to rotate. This, in turn, drives the second sprocket 23 to rotate through the chain 24. When the second sprocket 23 rotates, it drives the rotating plate 25 and the rotating frame 14 to rotate through the rotating shaft 26 until the rotating frame 14 rotates 180 degrees. At this time, another desiccant 16 moves to the side of the humidity sensor 20, and the dehumidification can begin. After the desiccant 16 that needs to be dehydrated is dried, it returns and repeats the process, improving the dehumidification efficiency. During drying, the operator opens the first valve 5 and the second valve 11, then starts the fan 9. Heated air enters the fan 9 through the heating pipe 10 and finally enters the first housing 1 from the output end of the fan 9. Air then enters the rotating frame 14 through the through hole 17, contacting the desiccant 16 and drying it. The generated moisture leaves through the exhaust pipe 4. When the filter element 19 or desiccant 16 needs to be replaced, the operator pulls the two pull plates 34. The pull plates 34, through the connecting rod 33, move the locking block 32, disengaging it from the slot 28. The spring 31 is compressed, allowing the operator to pull the insert plate 27 out of the slot 29, remove the second housing 2, replace the filter element 19 or desiccant 16, insert the insert plate 27 into the slot 29, release the pull plates 34, and the spring force of the spring 31 pushes the locking block 32 into the slot 28, completing the installation and improving installation and disassembly efficiency.
[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A moisture-proof automotive filter, comprising a first housing (1), characterized in that: A second housing (2) is provided on the top of the first housing (1). A rotating frame (14) is rotatably installed inside the first housing (1). Multiple evenly distributed through holes (17) are opened through the bottom surface and side wall of the rotating frame (14). A partition (15) is fixedly installed on the inner wall of the rotating frame (14). Two desiccants (16) are provided inside the rotating frame (14). A rotating plate (25) is fixedly installed at the bottom of the rotating frame (14). A rotating shaft (26) is fixedly installed at the bottom of the rotating plate (25). The bottom of the rotating shaft (26) passes through the first housing (1) and is fixedly installed. There is a second sprocket (23), a motor (21) is fixedly installed on the bottom surface inside the first housing (1), the output end of the motor (21) passes through the first housing (1) and a first sprocket (22) is fixedly installed thereon, a chain (24) is sleeved on the outer wall of the first sprocket (22) and the second sprocket (23), a connecting frame (18) is fixedly installed on the inner wall of the first housing (1), a humidity sensor (20) is fixedly installed at one end of the connecting frame (18), a protective frame (12) is fixedly installed at the bottom of the first housing (1), and a baffle (13) is fixedly installed on the bottom surface inside the first housing (1).
2. The moisture-proof automotive filter according to claim 1, characterized in that: The first housing (1) has connecting plates (6) fixedly installed on both sides of the exterior. The top of the connecting plate (6) has a slot (29). The inner wall of the slot (29) has a limiting groove (30). The inner wall of the limiting groove (30) has a spring (31) fixedly installed. One end of the spring (31) has a locking block (32) fixedly installed. The end of the locking block (32) near the spring (31) has a connecting rod (33) fixedly installed. The end of the connecting rod (33) away from the locking block (32) passes through the connecting plate (6) and has a pull plate (34) fixedly installed.
3. A moisture-proof automotive filter according to claim 1, characterized in that: The second housing (2) has a fixing plate (7) fixedly installed on both sides of the outside. The bottom of the fixing plate (7) has a plug plate (27) fixedly installed. The outer wall of the plug plate (27) has a slot (28).
4. A moisture-proof automotive filter according to claim 1, characterized in that: The first housing (1) has a sealing groove (35) on its top, and the second housing (2) has a sealing ring (36) fixedly installed on its bottom.
5. A moisture-proof automotive filter according to claim 1, characterized in that: A filter element (19) is provided at one end of the connecting frame (18).
6. A moisture-proof automotive filter according to claim 1, characterized in that: An air outlet pipe (8) is installed through and fixedly mounted on the bottom of the first housing (1), and an air inlet pipe (3) is installed through and fixedly mounted on the top of the second housing (2).
7. A moisture-proof automotive filter according to claim 1, characterized in that: A fan (9) is fixedly installed at the bottom of the first housing (1). The output end of the fan (9) passes through the first housing (1) and enters the interior of the first housing (1). A heating tube (10) is fixedly installed at the input end of the fan (9). A second valve (11) is provided on the outer wall of the heating tube (10).
8. A moisture-proof automotive filter according to claim 1, characterized in that: An exhaust pipe (4) is installed through and fixedly mounted on the top of the second housing (2), and a first valve (5) is provided on the top of the exhaust pipe (4).
9. A moisture-proof automotive filter according to claim 3, characterized in that: The outer wall of the insert plate (27) is in contact with the inner wall of the slot (29), and the inner wall of the card slot (28) is in contact with the outer wall of the card block (32).
10. A moisture-proof automotive filter according to claim 1, characterized in that: The top of the rotating frame (14) is in contact with the top surface inside the second housing (2).
Citation Information
Patent Citations
Moistureproof automobile filter
CN221113455U