Pulse self-cleaning type vehicle-mounted air conditioner filter

Abstract

The invention discloses a pulse self-cleaning type vehicle-mounted air conditioner filter, and belongs to the field of air conditioner filters, a circulation assembly arranged in the middle of an air filter cylinder body serves as a circulation channel of a pair of filter cylinder structures, a mode that air is filtered twice from outside to inside is formed, and the pair of filter cylinder structures rotationally act on a rotating shaft. In addition, the structure of the filter cartridge is improved, specifically, the filter layers are dragged by inner and outer groups of annularly arranged guide rods to be laid in an inner and outer laminated manner, so that on one hand, an annular wrinkle structure prolongs the air flow path and improves the filtering effect, and on the other hand, an inner rotating ring fixed by the guide rod positioned on the inner side is rotationally mounted; in the blowing cleaning work, the inner rotating ring is rotated and shifted forwards and backwards in the front-back direction so as to change the traction position between the inner guide rod and the outer guide rod which are adjacent, so that the adsorption surface of the filter layer is adjusted to be under the horizontal linear blowing direction of the blowing pipe, and the pulse cleaning effect is effectively improved in the circumferential rotation process of the filter cartridge structure.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning filters, and more particularly to a pulse self-cleaning vehicle air conditioning filter. Background Art

[0002] The car air conditioning filter is a filter used for air purification in the car cabin. It uses an activated carbon composite filter cloth composed of high-efficiency adsorption material - activated carbon and filament non-woven fabric. It is mainly used to filter impurities, adsorb harmful substances and ensure driving safety.

[0003] A search revealed patent number CN112502867B, for example, which discloses a "series-type self-cleaning air filter." The air filter comprises a front-end housing and a rear-end housing, each housing housing a filter element, forming a two-stage series filter element filtration system. However, the filter element structure in the aforementioned patent is fixedly mounted, making it difficult for air to act evenly on the filter element after entering the housing. Furthermore, the patent only has a pulse cleaning mechanism, which, on the one hand, can only achieve self-cleaning of the filter element in the front-end housing. On the other hand, due to the fixed arrangement of the pulse tube structure and the filter element structure, even if a guide diffuser is provided at the front end of the pulse tube, it is difficult to ensure that the pulse airflow acts evenly on all parts of the filter element at a certain height, resulting in poor cleaning effect.

[0004] In addition, setting the front and rear end filter element interchange mode, taking out the used filter element in the rear end housing and placing it into the front end housing, and placing the new filter element into the rear end housing is not convenient for disassembly and assembly operations. To address the above problems, a pulse self-cleaning vehicle air conditioning filter is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the existing problems and provide a pulse self-cleaning vehicle air conditioning filter compared with the existing technology.

[0006] The object of the present invention can be achieved by the following technical solutions: a pulse self-cleaning vehicle air-conditioning filter, comprising an air filter cartridge body with an air inlet and an air outlet respectively provided at both ends, a flow assembly provided at the middle position of the air filter cartridge body, the flow assembly comprising a spacer connected to the middle of the air filter cartridge body and a connecting cylinder fixed in the spacer, the spacer dividing the interior of the air filter cartridge body into a filter chamber 1 and a filter chamber 2 arranged on the left and right, the connecting cylinder being rotatably mounted with a rotating shaft having two ends respectively connected to the relative inner wall of the air filter cartridge body for rotation, and filter cartridge structures connected to the two ends of the connecting cylinder being installed at both ends of the rotating shaft;

[0007] The filter cartridge structure includes a pair of end caps, two sets of guide rods distributed in an inner and outer annular manner are provided on the opposite end walls of the pair of end caps, and filter layers are arranged in an annular stack between the two sets of guide rods. The two end caps located in the middle are respectively sleeved and docked on the left and right ends of the connecting tube. The other two end caps are each provided with an outer fixing ring fixed to the rotating shaft. An air outlet is provided on the outer fixing ring on the side close to the air outlet, and a plurality of ventilation grooves located on the outside of the filter layer are provided in an annular manner on the outer edges of the end caps close to the air inlet and away from the air outlet.

[0008] An air bag is installed on the outer side of the middle part of the air filter cylinder, and the air bag is provided with a pulse spray structure respectively extending to the inner sides of the two filter layers.

[0009] Furthermore, the partition is offset from the middle of the connecting tube and arranged close to the air inlet side, and a ventilation conversion space is reserved between the end cover located in the second filter chamber and fixed on the connecting tube and the partition, and multiple flow holes are located inside the ventilation conversion space and are connected to it.

[0010] Furthermore, a connecting structure for connecting filter chamber one and filter chamber two is provided on the connecting tube. The connecting structure is a connecting groove opened inside the connecting tube and opening toward the air inlet side. A plurality of flow holes connected to the connecting groove and located on the side of the spacer are provided in an annular manner on the end wall of the connecting tube away from the opening.

[0011] Furthermore, each group of guide rods is provided with multiple rings, and the inner and outer adjacent guide rods are staggered. The filter layer is folded and wound along the guide rods that are staggered inside and outside to form a ring-shaped inner and outer stacked structure. The annular pleated structure extends the airflow path and provides a larger surface area. On the one hand, it can absorb more dust and particulate matter. On the other hand, it reduces the filtration resistance per unit area under the same volume and increases the ventilation volume.

[0012] Furthermore, a dust collecting box located below the filter layer is fixedly embedded on both sides of the lower end of the air filter cylinder, and a dust guide pipe is externally connected to the bottom end of the dust collecting box.

[0013] Furthermore, a pair of end covers are equipped with a control structure for controlling the inner and outer groups of guide rods, and the control structure includes an outer fixed ring and an inner rotating ring which are arranged on the opposite end walls of a pair of end covers and distributed inside and outside. A group of guide rods located on the outside are annularly fixed on the outer fixed ring, a group of guide rods located on the inside are annularly fixed on the inner rotating ring, and a pair of outer fixed rings are fixedly embedded on the opposite inner walls of the pair of end covers, a pair of inner rotating rings are rotatably installed on the opposite inner walls of the pair of end covers, and the opposite end walls of the pair of end covers are provided with annular grooves for the rotatable embedding and installation of the inner rotating rings.

[0014] Furthermore, a pair of the inner rotating ring edge outer walls are provided with plug-in grooves, and a pair of the end cover edge outer walls are provided with rotating grooves extending toward the annular periphery of the plug-in grooves, and a magnetic plug-in plate fixedly plugged into the plug-in groove is rotatably installed in the rotating groove.

[0015] Furthermore, the middle part and the upper and lower inner end walls of the rotating tank are embedded with magnetic layers for magnetically attracting the magnetic plug-in plate, and the outer end wall of the air filter cylinder is provided with an operating cavity connected to the inside and outside of the rotating tank.

[0016] Furthermore, the pulse injection structure includes a pulse valve installed at the air bag outlet, the outer ends of the pulse valves are commonly connected to pulse tubes, a pair of pulse tubes pass through the partition and the interior of the connecting tube upward, and the upper ends of the pair of pulse tubes are fixed with injection pipes arranged parallel to the rotating axis and extending into the filter layer.

[0017] Furthermore, the blowing pipe is arranged close to the bottom end surface of the filter layer, and a plurality of blowing nozzles are horizontally arranged on the blowing pipe.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. This solution uses a spacer and a connecting tube structure arranged in the middle of the air filter cartridge as an air circulation component, and filter cartridge structures are respectively arranged on the left and right sides of the circulation component. On the one hand, a two-way filtering mode of air is formed from the outside to the inside. On the other hand, a pair of filter cartridge structures rotate together on the rotating shaft, which not only disturbs the airflow so that the airflow is evenly filtered through the filter layer, but also continuously replaces the blowing surface of the filter layer during the self-cleaning process, so that the downward blowing force of the blowing pipe arranged parallel to the pair of filter layers fully acts on the rotating filter layer. Its design is intended to fully backflush and remove dust and impurities accumulated on the two filter layers to maintain air circulation efficiency and extend the service life of the filter.

[0020] 2. Based on the above content, the filter cartridge structure is improved, and the two groups of guide rods stacked around the inner and outer layers of the filter layer act on the outer fixed ring and the inner rotating ring installed on the end wall of the end cover respectively, so that the filter layer on the filter cartridge structure is arranged into an annular inner and outer folded form. Compared with the filter layer of the traditional plate or cylindrical structure, the annular pleated structure extends the airflow path, expands the filter surface, and improves the filtering effect. In addition, the inner rotating ring fixedly installed by a group of guide rods located on the inner side rotates on the end wall of the end cover. During the spray cleaning work, the inner rotating ring between a pair of end covers is rotated back and forth in a forward and reverse direction to change the traction position between the inner and outer adjacent guide rods. The purpose is to adjust the adsorption surface of the filter layer to be directly below the blowing direction of the spray pipe, thereby effectively improving the pulse cleaning effect during the circular rotation of the filter cartridge structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the back external structure of the present invention;

[0022] Figure 2 It is an overall cross-sectional view of the present invention;

[0023] Figure 3 The cross-sectional view of the air filter cartridge of the present invention Figure 1 ;

[0024] Figure 4 The cross-sectional view of the air filter cartridge of the present invention Figure 2 ;

[0025] Figure 5 A schematic diagram of a pair of filter cartridge structures of the present invention Figure 1 ;

[0026] Figure 6 A schematic diagram of a pair of filter cartridge structures of the present invention Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the structure of the inner and outer guide rods of the present invention being fixed on the outer fixed ring and the inner rotating ring;

[0028] Figure 8 This is a schematic structural diagram of the present invention when the filter layer is separated from the outer fixed ring and the inner rotating ring;

[0029] Figure 9 This is a schematic diagram of the working of the present invention when performing filtration;

[0030] Figure 10 It is a side schematic diagram of the present invention;

[0031] Figure 11 It is a structural schematic diagram of the present invention when the filter layer and a pair of end covers are separated;

[0032] Figure 12 This is a schematic diagram of the front external structure of the present invention;

[0033] Figure 13 This is a schematic structural diagram of the present invention after the filter layer is installed between a pair of end covers;

[0034] Figure 14 This is a schematic cross-sectional view of the present invention during self-cleaning. Figure 1 ;

[0035] Figure 15 This is a schematic cross-sectional view of the present invention during self-cleaning. Figure 2 .

[0036] Description of the numbers in the figure:

[0037] 1. Air filter cartridge; 101. Air inlet; 102. Air outlet; 103. Operating chamber; 2. Spacer; 3. Connecting tube; 301. Flow hole; 4. Rotating shaft; 5. End cover; 501. Ventilation groove; 502. Rotating groove; 6. Filter layer; 7. Outer fixing ring; 8. Inner rotating ring; 9. Guide rod; 10. Magnetic plug-in plate; 11. Dust collecting box; 111. Dust guide tube; 12. Air bag; 13. Pulse tube; 14. Injection tube; 15. Pulse valve; 16. Air compressor. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work shall fall within the scope of protection of the present invention.

[0039] Example 1: For fixed filter element structures and pulse tube structures, on the one hand, it is difficult to achieve uniform air flow on the filter element, and on the other hand, during the self-cleaning process, it is difficult to ensure that the pulse airflow acts evenly on all parts of the filter element with a certain height, resulting in poor filtering and self-cleaning effects. This application proposes a solution:

[0040] This embodiment involves a pulse self-cleaning vehicle air conditioning filter, see Figure 1-Figure 4 , including an air filter cartridge 1 with heads fixedly mounted at both ends, a pair of heads respectively provided with an air inlet 101 and an air outlet 102, and a flow assembly fixed at the middle of the air filter cartridge 1;

[0041] The circulation component includes a spacer 2 fixedly connected to the inner wall of the middle part of the air filter cylinder 1 and a connecting cylinder 3 fixedly sleeved in the spacer 2. The spacer 2 divides the interior of the air filter cylinder 1 into filter chamber 1 and filter chamber 2 arranged on the left and right. The connecting cylinder 3 is axially rotatably installed with a rotating shaft 4 whose two ends are rotatably connected to the two heads respectively. A driving motor for rotating the rotating shaft 4 is fixed to the outer end of one of the heads, and both ends of the rotating shaft 4 are fixedly sleeved with filter cartridge structures arranged opposite to the two ends of the connecting cylinder 3.

[0042] The septum 2 is arranged away from the middle of the connecting tube 3 and close to the air inlet 101. A ventilation conversion space is reserved between the end cap 5 located in the second filter chamber and fixed to the connecting tube 3 and the septum 2. A plurality of flow holes 301 are located inside the ventilation conversion space and are connected thereto. A connecting structure for connecting the first filter chamber and the second filter chamber is opened on the connecting tube 3.

[0043] The connecting structure is a connecting groove opened inside the connecting tube 3 and opening toward the air inlet 101. A plurality of flow holes 301 connected to the connecting groove and located on the side of the spacer 2 are opened in an annular manner on the end wall of the connecting tube 3 away from the opening. The connecting tube 3 is used to connect the filter chamber 1 and the filter chamber 2 arranged on the left and right. The gas enters from the air inlet 101 and exits from the air outlet 102, and the air is filtered twice from the outside to the inside through a pair of filter tube structures.

[0044] See also Figure 2 as well as Figure 5-Figure 8 The filter cartridge structure includes a pair of end covers 5 rotatably connected to the inner wall of the air filter cartridge body 1, and two groups of guide rods 9 distributed in an inner and outer rings are provided on the opposite end walls of the pair of end covers 5, and filter layers 6 are arranged in an annular manner between the two groups of guide rods 9. The two end covers 5 located in the middle are sleeved and docked on the left and right ends of the connecting tube 3, and the other two end covers 5 are provided with an outer fixing ring 7 fixedly sleeved on the rotating shaft 4. An air outlet 701 is provided on the outer fixing ring 7 near the air outlet 102 side, and a plurality of ventilation grooves 501 located on the outside of the filter layer 6 are annularly provided on the outer edge of the end cover 5 near the air inlet 101 and away from the air outlet 102. A gas flow space is reserved between the filter layer 6 and the inner wall of the air filter cartridge body 1;

[0045] See also Figure 9 Along the gas flow direction, two end covers 5 with multiple ventilation grooves 501 are respectively located at the ends of the gas flow direction of filter chamber one and filter chamber two. After the gas enters one end of the filter chamber through the air inlet 101, it evenly enters the filter layer 6 and the reserved gas flow space through the multiple ventilation grooves 501 for first-order filtration. The gas is filtered from the outside to the inside through the filter layer 6. The gas after the first-order filtration enters the ventilation conversion space through the connecting structure of the connecting tube 3, and then leads to the gas flow space of another group of filter cartridge structures through the multiple ventilation grooves 501 on the end cover 5 in the filter chamber two, and performs second-order filtration from the outside to the inside through the filter layer 6. A pair of filter cartridge structures rotate together on the rotating shaft 4, which disturbs the airflow, so that the airflow is evenly filtered through the filter layer 6, thereby improving the air filtration effect. Finally, the gas after the secondary filtration is discharged from the air outlet 701 and the air outlet 102.

[0046] See also Figure 1 and Figure 9 、 Figure 10 An air bag 12 is installed on the outside of the middle of the air filter cylinder 1. The air bag 12 is provided with a pulse injection structure extending to the inner sides of the two filter layers 6 respectively. The pulse injection structure includes a pulse valve 15 installed at the air outlet of the air bag 12. The outer ends of the pulse valves 15 are connected to a pulse tube 13. A pair of pulse tubes 13 pass through the spacer 2 and the inside of the connecting tube 3 upward, and a pair of pulse tubes 13 are fixed with injection pipes 14 arranged parallel to the rotating shaft 4 and extending into the filter layer 6 on the upper ends. The injection pipes 14 are arranged close to the bottom end surface of the filter layer 6, and a plurality of injection nozzles are horizontally provided on the injection pipes 14.

[0047] Dust boxes 11 located below the filter layer 6 are fixedly embedded on both sides of the lower end of the air filter cartridge body 1. A dust guide pipe 111 is externally connected to the bottom end of the dust box 11. During the self-cleaning process, the pair of filter cartridge structures are driven to rotate in a circle by the rotating shaft 4, and the blowing surface of the filter layer 6 is continuously replaced, so that the downward blowing force of the blowing pipe 14 arranged parallel to the pair of filter layers 6 fully acts on the rotating filter layer 6. Its design is intended to fully backblow to remove dust and impurities accumulated on the two filter layers 6, so as to maintain air circulation efficiency and extend the service life of the filter.

[0048] Example 2: Based on Example 1, this example further optimizes and improves the filter cartridge structure, as follows:

[0049] See also Figure 7 、 Figure 8 Each group of guide rods 9 is provided with multiple rings, and the inner and outer adjacent guide rods 9 are staggered. The filter layer 6 is folded and wound along the guide rods 9 arranged in an inner and outer staggered manner to form a ring-shaped inner and outer stacked arrangement structure. Compared with the traditional plate-shaped or cylindrical filter layer, the ring-shaped pleated structure extends the airflow path and provides a larger surface area. On the one hand, it can absorb more dust and particulate matter. On the other hand, it reduces the filtration resistance per unit area under the same volume and improves the ventilation volume.

[0050] See also Figure 11-12 , a pair of end covers 5 are equipped with a regulating structure for regulating the inner and outer groups of guide rods 9, and the regulating structure includes an outer fixed ring 7 and an inner rotating ring 8 which are arranged on the opposite end walls of a pair of end covers 5 and distributed inside and outside. A group of guide rods 9 located on the outside are annularly fixed on the outer fixed ring 7, and a group of guide rods 9 located on the inside are annularly fixed on the inner rotating ring 8, and a pair of outer fixed rings 7 are fixedly embedded on the opposite inner walls of a pair of end covers 5, a pair of inner rotating rings 8 are rotatably installed on the opposite inner walls of a pair of end covers 5, and an annular groove for rotatably embedding and installing the inner rotating rings 8 is provided on the opposite end walls of a pair of end covers 5, and a pair of inner rotating rings 8 are provided on the edge outer walls of the pair of end covers 5. A plug-in groove 801 is provided on the edge outer wall of the pair of end covers 5, and a rotating groove 502 extending toward the annular periphery of the plug-in groove 801 is provided on the edge outer wall of the pair of end covers 5, and a magnetic plug-in plate 10 fixedly plugged in the plug-in groove 801 is rotatably installed in the rotating groove 502;

[0051] The middle part and the upper and lower inner end walls of the rotating tank 502 are embedded with magnetic layers for magnetically attracting the magnetic plug-in plate 10, and the outer end wall of the air filter cylinder 1 is provided with an operating cavity 103 that is connected to the inside and outside of the rotating tank 502;

[0052] See also Figure 10-12During the initial installation, a pair of outer fixing rings 7 are fixedly mounted on a pair of end covers 5, and a pair of inner rotating rings 8 are installed in the annular grooves of the pair of end covers 5. Then, the magnetic plug-in plate 10 is inserted into the rotating groove 502, and the inner end of the magnetic plug-in plate 10 is fixed in the plug-in groove 801. The magnetic plug-in plate 10 is located in the middle of the rotating groove 502. At this time, the magnetic attraction layer located in the middle of the rotating groove 502 plays a magnetic attraction positioning role for the magnetic plug-in plate 10. The two groups of guide rods 9 distributed inside and outside are adjacent and evenly staggered, that is, the guide rod 9 located on the inner side and the inner middle position of the two guide rods 9 on the outer side, so that the air can be filtered from the inside to the inside through the evenly expanded filter layer 6.

[0053] During the self-cleaning process, see Figure 12-15 , manually toggle the magnetic plug plate 10 through the operating chamber 103, and rotate the inner rotating ring 8 between a pair of end covers 5 forward and backward to change the traction position between the inner and outer adjacent guide rods 9. The purpose is to adjust the adsorption surface of the filter layer 6 to be directly below the blowing direction of the blowing pipe 14, thereby effectively improving the pulse cleaning effect during the circular rotation of the filter cartridge structure;

[0054] Specifically, the magnetic plug plate 10 is pushed downward until the magnetic plug plate 10 is fixed to the magnetic attraction layer at the upper end of the rotating groove 502. At this time, the inner rotating ring 8 drives the multiple guide rods 9 on the inner side to rotate counterclockwise by a certain angle, changing the distribution position between the inner and outer adjacent guide rods 9, so that the adsorption surface of the filter layer 6 pulled between the inner and outer adjacent guide rods 9 set apart is directly below the blowing direction of the blowing pipe 14. During the rotation of the filter cartridge structure, the blowing pipe 14 fully acts on the expansion surface of the filter layer 6. After a round of cleaning work is completed, the magnetic plug plate 10 is pushed upward;

[0055] At this time, the inner rotating ring 8 drives the multiple guide rods 9 on the inside to rotate clockwise by a certain angle, changing the distribution position between the adjacent inner and outer guide rods 9 again, and replacing the adsorption surface of the filter layer 6 directly below the blowing direction of the blowing pipe 14. In this way, the entire adsorption surface of the filter layer 6 can be strongly cleaned, and the self-cleaning effect of the filter layer 6 stacked inside and outside is improved.

[0056] In addition, it should be added that gas sensors are provided at the connecting groove of the connecting tube 3 and the gas outlet 102 for monitoring the gas flow after the first-order and second-order filtration, so as to judge the filtering effect of the two filter cartridge structures, and a pair of blowing pipes 14 act on the air bag 12 respectively, and a pair of pulse tubes 13 can be equipped with control valves to independently control the blowing operation of the pair of blowing pipes 14, and select the blowing cleaning action according to actual needs.

[0057] In summary, the spacer 2 and the connecting tube 3 provided in the middle of the air filter cartridge body 1 cooperate as a circulation component for air circulation, and filter cartridge structures are respectively provided on the left and right sides of the circulation component. A pair of filter cartridge structures rotate together and act on the rotating shaft 4, forming a filtering mode for air twice from the outside to the inside. The filter cartridge structure acts on an outer fixed ring 7 and an inner rotating ring 8 mounted on the end wall of the end cover 5 by pulling the two sets of guide rods 9 stacked inside and outside the filter layer 6. The filter layer 6 is provided in an annular inner and outer folded form. On the one hand, compared with the filter layer of the traditional plate-shaped or cylindrical structure, the annular pleated structure extends the airflow path, expands the filtering surface, and cooperates with the circular rotation mode to improve the filtering effect.

[0058] On the other hand, the inner rotating ring 8 fixedly installed by a group of guide rods 9 located on the inner side rotates on the end wall of the end cover 5. During the spray cleaning work, the inner rotating ring 8 between a pair of end covers 5 is rotated forward and backward in the positive and negative directions to change the traction position between the adjacent inner and outer guide rods 9. The purpose is to adjust the adsorption surface of the filter layer 6 to be directly below the blowing direction of the spray pipe 14, thereby effectively improving the pulse cleaning effect during the circular rotation of the filter cartridge structure. It is designed to fully backwash to remove dust and impurities accumulated on the two filter layers 6 to maintain air circulation efficiency and extend the service life of the filter.

[0059] The above are only preferred specific implementation methods of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved conception of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A pulse self-cleaning vehicle air conditioning filter, comprising an air filter cartridge (1) with an air inlet (101) and an air outlet (102) at both ends, characterized in that: A circulation assembly is provided in the middle of the air filter cylinder (1), and the circulation assembly comprises a spacer (2) connected to the middle of the air filter cylinder (1) and a connecting cylinder (3) fixed in the spacer (2); the spacer (2) divides the interior of the air filter cylinder (1) into a filter chamber 1 and a filter chamber 2 arranged on the left and right; the connecting cylinder (3) is axially rotatably mounted with a rotating shaft (4) whose two ends are respectively rotatably connected to the inner wall of the air filter cylinder (1); and both ends of the rotating shaft (4) are mounted with a filter cylinder structure connected to the two ends of the connecting cylinder (3); The filter cartridge structure comprises a pair of end caps (5), two groups of guide rods (9) distributed in an inner and outer annular manner and filter layers (6) stacked in an annular manner between the two groups of guide rods (9) are provided on opposite end walls of the pair of end caps (5), the two end caps (5) located in the middle are respectively sleeved and docked on the left and right ends of the connecting cylinder (3), the other two end caps (5) are each provided with an outer fixing ring (7) fixed on the rotating shaft (4), an air outlet (701) is provided on the outer fixing ring (7) on the side close to the air outlet (102), and a plurality of ventilation grooves (501) located on the outer side of the filter layer (6) are provided on the outer edges of the end caps (5) on the side close to the air inlet (101) and away from the air outlet (102); An air bag (12) is installed on the outer side of the middle of the air filter cylinder (1), and the air bag (12) is provided with a pulse spray structure extending to the inner sides of the two filter layers (6) respectively.

2. The pulse self-cleaning vehicle air conditioning filter according to claim 1, characterized in that: The diaphragm (2) is arranged away from the middle of the connecting tube (3) and close to the air inlet (101). A ventilation conversion space is reserved between the end cover (5) located in the second filter chamber and fixed on the connecting tube (3) and the diaphragm (2). A plurality of flow holes (301) are located inside the ventilation conversion space and are arranged in communication therewith.

3. The pulse self-cleaning vehicle air conditioning filter according to claim 2, characterized in that: The connecting tube (3) is provided with a connecting structure, which is a connecting groove provided inside the connecting tube (3) and opening toward the air inlet (101). A plurality of flow holes (301) are provided in an annular manner on the end wall of the connecting tube (3) away from the opening, and are connected to the connecting groove and located on the side of the spacer (2).

4. The pulse self-cleaning vehicle air conditioning filter according to claim 1, characterized in that: Each group of guide rods (9) is provided with a plurality of guide rods in an annular shape, and two adjacent guide rods (9) are arranged in an alternating manner.

5. The pulse self-cleaning vehicle air conditioning filter according to claim 4, characterized in that: A pair of end caps (5) on the filter cartridge structure are provided with a regulating structure for regulating the inner and outer guide rods (9), the regulating structure comprising an outer fixed ring (7) and an inner rotating ring (8) arranged on opposite end walls of the pair of end caps (5) and distributed inside and outside for fixing the guide rods (9); the pair of outer fixed rings (7) are fixedly embedded on the opposite inner walls of the pair of end caps (5); the pair of inner rotating rings (8) are rotatably installed on the opposite inner walls of the pair of end caps (5); and the opposite end walls of the pair of end caps (5) are provided with an annular groove for rotatably embedding the inner rotating rings (8).

6. The pulse self-cleaning vehicle air conditioning filter according to claim 5, characterized in that: A pair of inner rotating rings (8) are provided with plug-in slots (801) on their outer edge walls, and a pair of end covers (5) are provided with rotating slots (502) extending toward the peripheral direction of the plug-in slots (801) on their outer edge walls. A magnetic plug-in plate (10) fixedly plugged into the plug-in slots (801) is rotatably mounted in the rotating slots (502).

7. The pulse self-cleaning vehicle air conditioning filter according to claim 6, characterized in that: The middle portion of the rotating groove (502) and the upper and lower inner end walls are all embedded with magnetic attraction layers for magnetically attracting the magnetic plug-in plate (10).

8. The pulse self-cleaning vehicle air conditioning filter according to claim 1, characterized in that: The pulse injection structure comprises a pulse valve (15) installed at the air outlet of the air bag (12); the outer end of the pulse valve (15) is commonly connected to a pulse tube (13); a pair of pulse tubes (13) respectively penetrate upward through the spacer (2) and the interior of the connecting tube (3); and a injection tube (14) arranged parallel to the rotating shaft (4) and extending into the filter layer (6) is fixed to the upper end of the pair of pulse tubes (13).

Images