Vehicle-mounted air filter

Abstract

The invention relates to the technical field of filters, in particular to a vehicle-mounted air filter which comprises a supporting frame, a filtering shell, an expansion air bag, a driving block, a filter element, a rotating ring and an adjusting assembly, the filtering shell is installed on the supporting frame, the expansion air bag is installed between the supporting frame and the filtering shell, the driving block is located on the right side of the filtering shell, and the rotating ring is located on the right side of the filtering shell. An air inlet is formed in the right side of the filter shell, the filter element is installed in the filter shell, the rotating ring is installed at the joint of the filter element and the filter shell, and the adjusting assembly is installed between the filter shell and the filter element. The filter element in the filter rotates through the temperature brought by high-speed rotation of an engine, so that a channel through which gas flows through the filter is changed, and the filtering effect of the filter is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filters, in particular to a vehicle-mounted air filter. Background Art

[0002] An air filter is a device used to clean the air and is widely used in automobiles, household appliances, industrial equipment and other fields. Its main function is to remove dust, particles, pollen and other pollutants in the air, thereby providing cleaner air. The working principle of an air filter is to allow external air to flow into the filter, and use the internal filter element to filter impurities, thereby reducing the impurities that enter the car engine.

[0003] When the car is in a dusty area, the car's air filter will absorb a lot of dust. At this time, the filter needs to be replaced frequently. However, during use, the user will not check the status of the filter every time, so it is impossible to accurately know the amount of dust absorbed by the filter at this time. When the engine is started, the dust carried by the air enters the pipe. At this time, when there is a lot of dust in the filter, the amount of air entering will be reduced, and further, the impurities carried in the air will not be effectively removed, which will cause the engine to stall, or even cause danger;

[0004] In order to solve the above problems, there are many solutions in the prior art. Among them, the air filter with patent number CN107559110B, by setting a pre-filter element with a return cyclone tube air filter device, on the one hand, absorbs part of the dust that originally passed directly through the main filter element, and on the other hand, plays a filtering and protective role when the main filter element is damaged, thereby achieving an improvement in the filtering effect of the filter.

[0005] Although this method improves the filtering effect of the filter, due to the heavy dust in this area, the filter will absorb a lot of dust even when the car is not driving or the engine is running at a low speed, which will affect the service life of the filter. At this time, the dust on the surface of the filter will affect the amount of air entering the engine, and may even cause dust to enter the engine, thus affecting the normal operation of the engine.

[0006] Based on this, in order to solve the problem that it is difficult to ensure that the air passing through the air filter always remains clean and enters the engine when the automobile engine is running at high speed in a dusty area, the present invention designs a vehicle-mounted air filter. Summary of the invention

[0007] The present invention provides a vehicle-mounted air filter. In order to solve the problem that it is difficult to ensure that the air passing through the air filter always remains clean before entering the engine when the automobile engine is running at high speed in a dusty area, the present invention utilizes the principle of thermal expansion and contraction of gas. The temperature brought by the high-speed rotation of the engine causes the filter element in the filter to rotate, thereby changing the flow direction of the gas through the filter, thereby improving the filtering effect of the filter.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides a vehicle-mounted air filter, comprising a support frame, a filter housing, an expansion airbag, a drive block, a filter element, a swivel and an adjustment component, wherein the filter housing is mounted on the support frame, the expansion airbag is mounted between the support frame and the filter housing, the drive block is located on the right side of the filter housing, an air inlet is arranged on the right side of the filter housing, the filter element is mounted inside the filter housing, the swivel is mounted at the connection between the filter element and the filter housing, the adjustment component is mounted between the filter housing and the filter element, the expansion airbag pushes the filter housing by the drive block in a thermal expansion and contraction manner, the filter housing and the filter element are squeezed to the left by the drive block, the swivel drives the contracted filter element to rotate relative to the filter housing through the adjustment component, the swivel rotates under the drive of the adjustment component, and drives the internal filter element to rotate, after the filter element rotates, the surface of the filter element originally passing the gas rotates 90 degrees, the front and back faces of the filter element are exchanged with the upper and lower faces, thereby improving the overall utilization efficiency of the filter element around, and at the same time changing the flow path of the air in the filter element, thereby improving the cleaning effect of the filter element.

[0010] Preferably, the filter housing is divided into a fixed plate and a sliding plate, and a partition is installed on the sliding plate. The partition blocks the gas inside the filter housing so that it does not flow along the original flow path, thereby changing the path of the gas and improving the filtering effect of the filter element.

[0011] Preferably, the filter element is corrugated, and the filter element is divided into a smooth portion and a bent portion. A guide plate is installed at the bent portion. The initial function of the guide plate is to guide the gas flow to the bent portion surface of the filter element. After the filter element is compressed, the guide plate forms a barrier to the airflow, thereby preventing the airflow from moving to a position away from the filter element area. At the same time, it can also reflect the fast-flowing airflow so that the airflow is reflected to the filter element, thereby increasing the contact area of ​​the gas flow to the filter element.

[0012] Preferably, the partition array on the filter housing is arranged on the front and rear sides, the number of filter elements is odd, and a flow hole is opened on the partition on the rear side. The flow hole allows the gas reaching the leftmost side to enter the middle filter element along the flow hole. The gas can undergo multiple filtrations, and the filtering effect of the filter can be improved as the heat increases.

[0013] Preferably, the adjustment assembly includes a front thread groove, a front protrusion, a rear thread groove and a rear protrusion, the swivel ring is divided into a front ring and a rear ring, an arc pad is installed on the right side of the front and rear inner edges of the filter housing, the arc pad is connected to the support frame, the front thread groove is opened on the inner wall of the arc pad on the front side, the front protrusion is located in the front thread groove and slides, the rear thread groove is opened on the inner wall of the arc pad on the rear side, the rear protrusion is located in the rear thread groove and slides, the front protrusion is connected to the front ring, and the rear protrusion is connected to the rear ring; through the different movement modes of the three filter elements, the gas presents three different flow states when passing through the three filter elements, thereby increasing the contact area between the airflow and the filter element.

[0014] Preferably, the spiral directions of the front thread groove and the rear thread groove are opposite, and when the filter element is compressed to the leftmost side, the movable edges of the guide plate fit together.

[0015] Preferably, paddles are installed on the filter housing and the partition, and a collecting groove is provided at the bottom of the filter housing to shake dust on the surface of the filter element to the bottom of the filter housing, so that the collecting groove can collect the dust.

[0016] Preferably, a top cover is installed on the top of the collection tank, and the cross-section of the collection tank is trapezoidal, which cooperates with the gas flow direction formed by the flow hole, so that the dust will not adhere to the surface of the filter element again after collection, thereby improving the dust collection effect.

[0017] Preferably, the right side of the filter housing is of a snap-on type, the front ring is installed clockwise with the left end face of the filter housing, and the rear ring is installed counterclockwise with the left end face of the filter housing, which is convenient for installation and disassembly.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. A vehicle-mounted air filter of the present invention drives the gas in the expansion airbag to expand through heat, and the expansion airbag drives the filter housing to move leftward along the limitation of the support frame, the overall filter element volume is compressed, and the filtering effect of the filter element is improved; at the same time, the filter housing drives the right end of the filter element to move gradually to the left through the swivel, and the swivel rotates, driving the internal filter element to rotate, thereby improving the overall utilization efficiency around the filter element, and at the same time changing the flow path of air in the filter element, thereby improving the cleaning effect of the filter element.

[0020] 2. A vehicle-mounted air filter of the present invention, after the filter element is compressed, the smooth parts are close to each other, and the angle between the bent parts is gradually reduced until the end points of the bent parts are in contact with each other. At this time, when the gas flows, it needs to pass through the double bent parts at the single-section filter element before it can move in the left and right directions. After the filter element is compressed, the guide plate blocks the airflow, thereby preventing the airflow from moving to a position away from the filter element area. At the same time, it can also reflect the fast-flowing airflow so that the airflow is reflected to the filter element, thereby increasing the contact area between the gas flow and the filter element, thereby improving the filtering effect of the filter element.

[0021] 3. A vehicle-mounted air filter of the present invention, through the different movement modes of the three filter elements, makes the gas present three different flow states when passing through the three filter elements. The gas will flow forward in a counterclockwise spiral in the rear filter element, and then flow to the middle filter element through the flow hole. At this time, the gas will move smoothly to the right, move to the notch of the partition and flow to the front filter element, and the front filter element will drive the gas to flow to the outlet in a clockwise spiral; when the filter element is compressed to the leftmost side, the filter elements on the front and rear sides are closed up and down and circulate left and right, while the filter element in the middle layer is closed left and right. Therefore, if the gas in the filter element in the middle layer wants to flow into the front filter element, it must flow upward or downward at the right end, thereby changing the flow direction of the gas, so that the gas does not flow in one direction horizontally or vertically, thereby improving the filtering effect of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the specific implementation mode or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are one implementation mode of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention when it is not working;

[0024] Figure 2 is a schematic diagram of the inflatable airbag of the present invention after being inflated;

[0025] Figure 3 is a schematic diagram of the structure of the filter element of the present invention when it is not squeezed;

[0026] Figure 4 It is a structural diagram of the filter element of the present invention after extrusion;

[0027] Figure 5 It is a structural schematic diagram of the plectrum of the present invention;

[0028] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0029] Figure 7 It is a schematic diagram of the state of gas flow after the airbag of the present invention is compressed;

[0030] Figure 8 It is a structural schematic diagram of the collecting tank of the present invention.

[0031] In the figure: 1. support frame; 2. filter housing; 21. fixed plate; 22. sliding plate; 23. partition; 231. flow hole; 232. paddle; 24. collecting tank; 25. top cover; 26. arc pad; 3. expansion airbag; 4. drive block; 5. filter element; 51. smooth part; 52. bending part; 53. guide plate; 6. swivel; 61. front ring; 62. rear ring; 7. adjustment assembly; 71. front thread groove; 72. front protrusion; 73. rear thread groove; 74. rear protrusion; 8. air inlet. DETAILED DESCRIPTION

[0032] In order to better understand the above solution, the above technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1-4 As shown, a vehicle-mounted air filter provided by the present invention includes a support frame 1, a filter housing 2, an expansion airbag 3, a drive block 4, a filter element 5, a swivel 6 and an adjustment assembly 7. The filter housing 2 is installed on the support frame 1, the support frame 1 is installed on the vehicle, and the two ends of the support frame 1 are respectively connected to the pipeline, one end is connected to the inside of the engine, and the other end is connected to the outside. The support frame 1 not only supports the filter housing 2, but also serves as an installation carrier of the filter housing 2.

[0034] The expansion airbag 3 is installed between the support frame 1 and the filter housing 2, and the driving block 4 is located on the right side of the filter housing 2. The gas inside the expansion airbag 3 expands due to heat, and can drive the driving block 4 to move leftward, squeezing the filter housing 2. At the same time, the gas in the expansion airbag 3 contracts when it is cooled, and the filter housing 2 is reset by the driving block 4. An air inlet 8 is provided on the right side of the filter housing 2, and the filter element 5 is installed inside the filter housing 2. The air inlet 8 is set as a narrow opening. On the one hand, the flow speed of the gas is increased, which can provide a certain thrust to the dust on the surface of the filter element 5. On the other hand, it can reduce the damage of large impurities to the filter element 5; the filter element 5 can be set to multiple stages, that is, the dust is filtered step by step from the outside to the inside.

[0035] The swivel 6 is installed at the connection between the filter element 5 and the filter housing 2, the adjusting assembly 7 is installed between the filter housing 2 and the filter element 5, the expansion airbag 3 pushes the filter housing 2 by the driving block 4 through thermal expansion and contraction, the filter housing 2 and the filter element 5 are squeezed to the left by the driving block 4, and the swivel 6 drives the contracted filter element 5 to rotate relative to the filter housing 2 through the adjusting assembly 7.

[0036] When the engine is running at high speed, the amount of gas required at this time increases, and thus the circulation speed of the gas gradually increases, and the heat of the engine is gradually transferred to the expansion airbag 3, driving the gas in the expansion airbag 3 to expand. The expansion airbag 3 therefore drives the filter housing 2 to move to the left along the limitation of the support frame 1. When the filter housing 2 gradually moves to the left, the volume of the entire filter element 5 is compressed, and the filtering effect of the filter element 5 is improved; at the same time, the filter housing 2 drives the right end of the filter element 5 to move gradually to the left through the swivel 6, and the swivel 6 rotates under the drive of the adjustment component 7, driving the internal filter element 5 to rotate. After the filter element 5 rotates, the surface of the filter element 5 that originally passed the gas rotates 90°, and the front and back faces of the filter element 5 are swapped with the upper and lower faces, thereby improving the overall utilization efficiency of the filter element 5 around, and at the same time changing the flow path of the air in the filter element 5, thereby improving the cleaning effect of the filter element 5.

[0037] like Figure 3 As shown, the filter housing 2 is divided into a fixed plate 21 and a sliding plate 22, and a partition plate 23 is installed on the sliding plate 22;

[0038] When the driving block 4 pushes the right end of the filter housing 2, the fixed plate 21 on the right side of the filter housing 2 will move to the left along with the sliding plate 22, so that the overall volume of the filter housing 2 is smaller. At the same time, the partition plate 23 on the right side moves to the left along with the sliding plate 22, thereby forming a closed loop in the internal chamber, increasing the contact area with the surface of the filter element 5 during gas circulation. At the same time, the obstruction of the partition plate 23 hinders the gas inside the filter housing 2 and prevents it from flowing along the original circulation path, thereby changing the path of the gas and improving the filtering effect of the filter element 5.

[0039] like Figure 4 As shown, the filter element 5 is corrugated, and the filter element 5 is divided into a smooth portion 51 and a bent portion 52, and a guide plate 53 is installed at the bent portion 52;

[0040] After the filter element 5 is compressed, it will be squeezed along the corrugation. At this time, the smooth parts 51 are close to each other, and the angle between the bent parts 52 is gradually reduced until the end points of the bent parts 52 are fitted together. At this time, the gas needs to pass through four bent parts 52 to move in the left and right directions, thereby improving the filtering effect of the filter element 5. The initial function of the guide plate 53 is to guide the gas flow to the surface of the bent part 52 of the filter element 5. After the filter element 5 is compressed, the guide plate 53 forms a shield for the airflow, thereby preventing the airflow from moving to a position away from the filter element 5 area. At the same time, it can also reflect the fast-circulating airflow, so that the airflow is reflected to the filter element 5, thereby increasing the contact area of ​​the gas flow to the filter element 5, and at the same time, it can form multiple reflections on the circulating airflow, thereby improving the filtering effect of the filter element 5.

[0041] like Figure 5-7As shown, the partitions 23 on the filter housing 2 are arranged in an array on the front and rear sides, the number of the filter elements 5 is odd, and a flow hole 231 is opened on the partition 23 on the rear side;

[0042] By setting a plurality of partitions 23, the flow path of the gas is extended, thereby increasing the contact area between the gas and the surface of the filter element 5, and at the same time, the contact area between the sliding plate 22 and the fixed plate 21 can be increased, and the pressure of the expansion airbag 3 on the sliding plate 22 and the fixed plate 21 can be reduced; the number of filter elements 5 is odd, which can ensure that the gas flows from one end of the air inlet 8 to the other end, and ensure that the gas can pass through at least one complete filter element 5. The number of filter elements 5 is preferably three, which will not take up too much space, nor will the force required for extrusion be too large due to too many filter elements 5. If the number of filter elements 5 is too large, the force required for the expansion airbag 3 to push the filter housing 2 needs to be large enough, so that the gas inside the expansion airbag 3 needs to be subjected to sufficient heat. However, the heat of the engine gradually increases, and due to the outward propagation, heat loss will be formed, and it is difficult to ensure that there is enough heat to enable the expansion airbag 3 to push more filter elements 5; at the same time, compared with a single filter element 5, three filter elements 5 can improve the overall filtering effect and realize multiple filtering.

[0043] The flow hole 231 allows the gas reaching the leftmost side to enter the middle filter element 5 along the flow hole 231. The distance from the leftmost end of the partition 23 is not equal. The partition 23 at the air inlet 8 needs to be completely covered, thereby ensuring that the gas can move to the left along the filter element 5 (rear side) where the air inlet 8 is located. Other blocking plates or sealing rings can be added here to ensure that the gas will not flow directly at the rotating ring 6 of the three filter elements 5. The flow hole 231 and the partition 23 form a meandering flow channel, and the gas can undergo multiple filtrations. Each section of the filter element 5 needs to pass through two layers of bending parts 52, thereby being able to improve the filtering effect of the filter as the heat increases.

[0044] like Figure 3-4 As shown, the adjustment assembly 7 includes a front thread groove 71, a front protrusion 72, a rear thread groove 73 and a rear protrusion 74, the swivel 6 is divided into a front ring 61 and a rear ring 62, and an arc pad 26 is installed on the right side of the front and rear inner edges of the filter housing 2, and the arc pad 26 is connected to the support frame 1, the front thread groove 71 is opened on the inner wall of the arc pad 26 on the front side, the front protrusion 72 is located in the front thread groove 71 and slides, the rear thread groove 73 is opened on the inner wall of the arc pad 26 on the rear side, the rear protrusion 74 is located in the rear thread groove 73 and slides, the front protrusion 72 is connected to the front ring 61, and the rear protrusion 74 is connected to the rear ring 62;

[0045] As the inflated airbag 3 gradually pushes the filter element 5 to the left, the front protrusion 72 on the front ring 61 slides in the front thread groove 71 and moves forward along the front protrusion 72. The front protrusion 72 rotates clockwise along the trajectory of the front thread groove 71, thereby driving the front ring 61 to rotate clockwise. At this time, the front filter element 5 rotates clockwise, and the original upper and lower surfaces become the front and rear surfaces, and the original front and rear surfaces become the upper and lower surfaces. The guide plate 53 is arranged up and down, thereby causing the surface of the airflow passing through the front filter element 5 to change. At this time, the clean surface of the filter element 5 can improve the adsorption effect on dust; at the same time, the guide plate 53 here is arranged up and down, which can change the gas from left and right blocking to up and down blocking, thereby changing the gas flow path and improving the gas filtering effect;

[0046] During the rotation of the filter element 5, the filter element 5 is made of soft material. At this time, the filter element 5 will be squeezed during the rotation, thereby forming a distortion, which can make the impurities on the surface of the filter element 5 fall downward during the rotation, and the impurities on the surface of the filter element 5 closer to the outlet are less adhered, thereby reducing the possibility of the fallen impurities flowing out of the outlet. During the rotation of the filter element 5, the filter element 5 changes from a longitudinal position to a transverse position. At this time, the chamber where the filter element 5 is located, that is, the cavity formed by the partition 23 and the edge of the filter housing 2 can be gradually blocked, so that the circulating gas will inevitably pass through the filter element 5, thereby preventing the gas from flowing out directly from the outlet without being filtered; in addition, during the rotation, the partition 23 and the filter housing 2 will also contact the filter element 5, thereby shaking off the dust on the surface of the filter element 5, thereby improving the collection of impurities and the filtering effect of the filter element 5; the spiral directions of the front thread groove 71 and the rear thread groove 73 are opposite;

[0047] The rear protrusion 74 on the rear ring 62 slides in the rear thread groove 73 and moves forward along the rear thread groove 73. The rear protrusion 74 will rotate counterclockwise along the rear thread groove 73, thereby driving the rear ring 62 to rotate counterclockwise. At this time, the filter element 5 where the air inlet 8 is located rotates counterclockwise. Through the different movement modes of the three filter elements 5, the gas presents three different flow states when passing through the three filter elements 5. At the rear filter element 5, it will flow forward in a counterclockwise spiral, and then flow to the middle filter element 5 through the flow hole 231. At this time, the gas will move smoothly to the right and move to the notch of the partition 23 to flow to the front filter element 5. The front filter element 5 will drive the gas to flow toward the outlet in a clockwise spiral, thereby increasing the contact area between the airflow and the filter element 5, and improving the filtering effect of the filter element 5 on the air.

[0048] When the filter element 5 is compressed to the leftmost side, the movable edges of the guide plate 53 fit together, thereby forming a closed space for the gas. The filter elements 5 on the front and rear sides are closed up and down and flow left and right, while the filter element 5 in the middle layer is closed left and right. Therefore, if the gas in the filter element 5 in the middle layer wants to flow into the filter element 5 in front, it must flow upward or downward at the right end, thereby changing the flow direction of the gas, so that the gas does not flow in a unidirectional manner horizontally or vertically, thereby improving the filtering effect of the filter element 5.

[0049] like Figure 7-8 As shown, a paddle 232 is installed on the filter housing 2 and the partition plate 23, and a collecting groove 24 is provided at the bottom of the filter housing 2; a top cover 25 is installed on the top of the collecting groove 24, and the cross section of the collecting groove 24 is trapezoidal.

[0050] The paddle 232 can impact the smooth portion 51 of the filter element 5 during the squeezing process of the filter element 5, thereby shaking off the dust on the surface of the filter element 5 to the bottom of the filter housing 2, so that the collecting slot 24 can collect the dust, reduce the clogging of the dust on the surface of the filter element 5, and improve the filtering effect of the filter element 5; the dust enters the collecting slot 24 on the left along the direction of the air outlet, and the collection slot 24 with a trapezoidal cross-section allows the dust to enter deeper into the collecting slot 24 when moving to the right, and the gas flow direction formed by the flow hole 231 prevents the dust from adhering to the surface of the filter element 5 again after being collected, thereby improving the dust collection effect, and the top cover 25 enhances the dust blocking, further improving the filtering effect of the filter element 5.

[0051] The front ring 61 is installed clockwise with the left end face of the filter housing 2, and the rear ring 62 is installed counterclockwise with the left end face of the filter housing 2; the front ring 61 and the rear ring 62 are installed by rotating in different directions, which just corresponds to the rotation direction of the front ring 61 and the rear ring 62 when they are working, thereby avoiding the front ring 61 and the rear ring 62 from unscrewing the entire filter element 5 under the action of the expansion airbag 3, thereby causing the problem of internal shaking. When replacement is needed, the front ring 61 and the rear ring 62 can be directly rotated clockwise or counterclockwise to facilitate replacement of the filter element 5. The front ring 61 and the front protrusion 72 are connected by a snap buckle to facilitate disassembly. Similarly, the rear ring 62 and the rear protrusion 74 are also connected by a snap buckle.

[0052] When the car is not started or the engine is running slowly, the gas will enter the filter housing 2 through the air inlet 8 and flow along the filter element 5 to the outlet. When the car engine speed is fast, the expansion airbag 3 on the support frame 1 is affected by the heat of the car engine. The heat transmitted by the car engine gradually increases, and the expansion airbag 3 gradually swells, thereby driving the driving block 4 to squeeze the filter housing 2, and the sliding plate 22 and the fixed plate 21 gradually move to the left and then splice. At this time, the multiple partitions 23 also form two complete front and rear plates, and the flow path of the gas changes;

[0053] In addition, when the inflated airbag 3 drives the driving block 4, the front protrusion 72 on the front ring 61 rotates clockwise along the front thread groove 71, thereby driving the front filter element 5 to rotate clockwise, and the rear protrusion 74 on the rear ring 62 rotates counterclockwise along the rear thread groove 73, thereby driving the rear filter element 5 to rotate counterclockwise. At this time, the three filter elements 5 form three different states, thereby changing the flow direction of the internal airflow;

[0054] During the extrusion process of the filter element 5, the bent parts 52 are attached to each other, and then the single layer is changed into multiple layers, thereby improving the filtering effect of the filter element 5, and the guide plate 53 is gradually changed from originally guiding gas to blocking and reflecting gas;

[0055] When the filter element 5 rotates forward, the paddle 232 and the partition 23 will squeeze the filter element 5, thereby shaking off the dust on the surface of the filter element 5, and then the dust enters the collecting groove 24, and is blocked by the top cover 25 to collect the dust.

[0056] The basic principles and beneficial effects of the present invention are shown and described above. At the same time, the present invention is not limited to the above embodiments. Without departing from the effects and scope of the present invention, the present invention may have various changes and improvements. These changes and improvements all fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle air filter, characterized in that: The invention comprises a support frame (1), a filter housing (2), an expansion airbag (3), a driving block (4), a filter element (5), a rotating ring (6) and an adjusting component (7); the filter housing (2) is mounted on the support frame (1); the expansion airbag (3) is mounted between the support frame (1) and the filter housing (2); the driving block (4) is located on the right side of the filter housing (2); an air inlet (8) is provided on the right side of the filter housing (2); the filter element (5) is mounted inside the filter housing (2); the rotating ring (6) is mounted at the connection between the filter element (5) and the filter housing (2); the adjusting component (7) is mounted between the filter housing (2) and the filter element (5); the expansion airbag (3) pushes the filter housing (2) by means of thermal expansion and contraction using the driving block (4); the filter housing (2) and the filter element (5) are squeezed to the left by the driving block (4); and the rotating ring (6) drives the contracted filter element (5) to rotate relative to the filter housing (2) through the adjusting component (7).

2. The vehicle air filter according to claim 1, characterized in that: The filter housing (2) is divided into a fixed plate (21) and a sliding plate (22). The fixed plate (21) and the sliding plate (22) are slidably connected at intervals, and a partition plate (23) is installed on the sliding plate (22).

3. The vehicle air filter according to claim 1, characterized in that: The filter element (5) is corrugated and is divided into a smooth portion (51) and a bent portion (52). A guide plate (53) is installed at the bent portion (52).

4. A vehicle air filter according to claim 2 or 3, characterized in that: When the filter element (5) is compressed to the leftmost position, the corresponding edges of the bent portions (52) contact each other, and the plurality of partitions (23) are pressed against each other.

5. The vehicle air filter according to claim 4, characterized in that: The partition plates (23) are arranged in an array on the front and rear sides of the filter housing (2); the number of the filter elements (5) is odd; and a flow hole (231) is provided on the partition plate (23) on the rear side.

6. The vehicle air filter according to claim 5, characterized in that: The adjustment assembly (7) comprises a front thread groove (71), a front protrusion (72), a rear thread groove (73) and a rear protrusion (74); the rotating ring (6) is divided into a front ring (61) and a rear ring (62); a circular arc pad (26) is installed on the right side of the front and rear inner edges of the filter housing (2); the circular arc pad (26) is connected to the support frame (1); the front thread groove (71) is formed on the inner wall of the circular arc pad (26) on the front side; the front protrusion (72) is located in the front thread groove (71) and slides; the rear thread groove (73) is formed on the inner wall of the circular arc pad (26) on the rear side; the rear protrusion (74) is located in the rear thread groove (73) and slides; the front protrusion (72) is connected to the front ring (61); and the rear protrusion (74) is connected to the rear ring (62).

7. The vehicle air filter according to claim 6, characterized in that: The spiral directions of the front thread groove (71) and the rear thread groove (73) are opposite, and when the filter element (5) is compressed to the leftmost position, the movable edges of the guide plate (53) fit together.

8. The vehicle air filter according to claim 6, characterized in that: The filter housing (2) and the partition plate (23) are provided with a paddle (232), and the bottom of the filter housing (2) is provided with a collecting tank (24).

9. The vehicle air filter according to claim 8, characterized in that: A top cover (25) is installed on the top of the collecting tank (24), and the cross section of the collecting tank (24) is trapezoidal.

10. The vehicle air filter according to claim 6, characterized in that: The front ring (61) is mounted on the right end surface of the filter housing (2) in a clockwise manner, and the rear ring (62) is mounted on the right end surface of the filter housing (2) in a counterclockwise manner.

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