Novel air filter

Abstract

The utility model discloses a novel air filter, belongs to the technical field of air filters, and adopts the technical scheme that the novel air filter comprises an outer shell and a filter element, the filter element is detachably arranged in the outer shell, the outer shell comprises an upper cover body and a lower shell body, the upper cover body covers the lower shell body and is detachably connected with the lower shell body, an air inlet and an air outlet are formed in the lower shell body, and the filter element is detachably connected with the air inlet. According to the air filter, the mass of the upper cover body is increased and the mass distribution of the upper cover body is changed through the balancing weight, so that the natural resonance frequency of the air filter is changed, resonance generated by vibration of the air filter and an engine is avoided, and the resonance phenomenon is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air filter technical field, especially relate to a novel air filter. BACKGROUND

[0002] The automobile air filter is the key component in the engine system of the vehicle, and its core function is to effectively block the impurities in the air from entering the engine, thereby providing a solid protection barrier for the engine during the air intake process of the vehicle engine.

[0003] The automobile air filter is mainly composed of upper and lower shells, an air inlet port, an air outlet port and a filter element, in actual application, the air in the external environment enters the air filter chamber formed by the upper and lower shells through the air inlet port, and then the impurities are effectively removed through the precise filtering action of the filter element, and finally the pure air is discharged through the air outlet port.

[0004] When the engine is running, the air being sucked into the air filter will cause a resonance phenomenon, which will cause the output power of the engine to decrease significantly, and also increase the fuel consumption, and in severe cases, it may even cause damage to the structure of the engine, therefore, how to change the natural resonance frequency of the air filter to reduce the probability of its coincidence with the engine vibration frequency, and thus reduce the occurrence of the resonance phenomenon is a problem to be solved at present. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a novel air filter, and the technical problem to be solved by the utility model is how to change the natural resonance frequency of the air filter.

[0006] The above technical purpose of the utility model can be realized through the following technical scheme: a novel air filter, comprising a shell and a filter element, the filter element is detachably arranged in the shell, the shell comprises an upper cover body and a lower shell body, the upper cover body is arranged on the lower shell body, and the upper cover body and the lower shell body are detachably connected, the lower shell body is provided with an air inlet and an air outlet, gas flows from the air inlet to the air outlet through the filter element, and the upper cover body is inlaid with a counterweight.

[0007] In the novel air filter, the counterweight is made of PA6-GF30 material.

[0008] In the novel air filter, the counterweight is made of iron material.

[0009] In the novel air filter, the counterweight is in the form of a disc.

[0010] In the novel air filter, the upper cover body is integrally formed with a protrusion, the protrusion is provided with a containing cavity for containing the counterweight, and the counterweight is arranged in the containing cavity and matched with the containing cavity.

[0011] In the novel air filter, the upper cover body and the lower shell are provided with a sealing gasket, the lower shell is provided with a supporting strip for supporting the filter element, and the sealing gasket clamps the filter element in cooperation with the supporting strip.

[0012] In the novel air filter, the lower shell is detachably provided with an inner shell, the inner shell is provided with an inclined groove, the inclined groove is provided with a ventilation hole, the ventilation hole is aligned with the air outlet, and the air inlet and the air outlet are communicated with the ventilation hole.

[0013] In the novel air filter, the bottom of the lower shell is provided with a slot, the inner shell is provided with an insertion plate, the insertion plate is matched with the slot, and the insertion plate is inserted into the slot.

[0014] In the novel air filter, the upper cover body is integrally formed with a plurality of reinforcing ribs, the reinforcing ribs are staggered, and the reinforcing ribs cooperate with the upper cover body to form a plurality of sound absorption cavities.

[0015] In the novel air filter, the middle part of the upper cover body is integrally formed with a reinforcing frame, and the reinforcing frame is provided with a plurality of through holes.

[0016] Compared with the prior art, the novel air filter has the beneficial effects that:

[0017] The counterweight is embedded in the upper cover body, the mass of the upper cover body is increased by the counterweight, the mass distribution of the upper cover body is changed, the natural resonance frequency of the air filter is changed, resonance with the engine vibration is avoided, and the occurrence of resonance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the first embodiment;

[0019] Figure 2 It is a sectional view of the first embodiment;

[0020] Figure 3 It is a partial structural schematic view of the first embodiment;

[0021] Figure 4 It is another partial structural schematic view of the first embodiment;

[0022] Figure 5 It is a top view of the lower shell of the first embodiment;

[0023] Figure 6 This is a schematic diagram of the inner shell structure in Embodiment 1;

[0024] Figure 7 This is a partial structural schematic diagram of Example 2.

[0025] Reference numerals: 1. Outer shell; 2. Filter element; 3. Upper cover; 4. Lower shell; 5. Air inlet; 6. Air outlet; 7. Counterweight; 8. Protrusion; 9. Receiving cavity; 10. Sealing gasket; 11. Support strip; 12. Inner shell; 13. Inclined groove; 14. Vent hole; 15. Slot; 16. Insert plate; 17. Reinforcing rib; 18. Silencing cavity; 19. Reinforcing frame; 20. Through hole; 21. Sound-absorbing cotton. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0027] A new type of air filter, such as Figures 1 to 6 As shown, it includes a housing 1 and a filter element 2. The housing 1 includes an upper cover 3 and a lower housing 4. The upper cover 3 covers the lower housing 4, and the upper cover 3 and the lower housing 4 are detachably connected. In this embodiment, the upper housing and the lower housing 4 are securely connected by several bolts.

[0028] A sealing gasket 10 is provided between the upper cover 3 and the lower housing 4. The upper cover 3 and the lower housing 4 cooperate to clamp the sealing gasket 10, and the sealing gasket 10 can effectively ensure the sealing between the upper cover 3 and the lower housing 4.

[0029] The filter element 2 is detachably installed inside the outer casing 1. The lower casing 4 is provided with a support bar 11 for supporting the filter element 2. The sealing gasket 10 works with the support bar 11 to clamp the filter element 2, thereby ensuring the stability of the filter element 2. When disassembling the filter element 2, simply separate the upper cover 3 from the lower casing 4, and then remove the sealing gasket 10 to remove the filter element 2. When installing the filter element 2, simply place the filter element 2 on the support bar 11, then install the sealing gasket 10, and then cover the lower casing 4 with the upper cover 3 and connect it with bolts. The disassembly and assembly of the filter element 2 is simple and can effectively improve the efficiency of the air filter's later maintenance.

[0030] The lower housing 4 is provided with an air inlet 5 and an air outlet 6. Gas flows from the air inlet 5 through the filter element 2 to the air outlet 6.

[0031] The upper cover 3 has several reinforcing ribs 17 formed inside, which are staggered to increase the strength and rigidity of the upper cover 3 structure, ensure the structural strength of the upper cover 3, and prevent the upper cover 3 from being deformed or damaged due to external forces.

[0032] Need to explain, because several reinforcing ribs 17 staggered distribution, so several reinforcing ribs 17 with the upper cover body 3 form several sound cavity 18, sound waves in the sound cavity 18, will encounter the reinforcing ribs 17 and the inner wall of the upper cover body 3, and then the sound wave reflection effect, so that the propagation direction of the sound wave changes, reflected sound wave and the original sound wave interference, thereby reducing the sound intensity, achieve noise reduction.

[0033] The upper cover body 3 is integrally formed with a reinforcing frame 19 in the middle, and a plurality of through holes 20 are formed in the reinforcing frame 19. The reinforcing frame 19 can improve the structural strength of the upper cover body 3, and the plurality of through holes 20 serve as channels for airflow.

[0034] The inner shell 12 is detachably arranged in the lower shell 4. The inner shell 12 is provided with an inclined groove 13. The inclined groove 13 is provided with a ventilation hole 14. The ventilation hole 14 is close to the bottom of the inclined groove 13. The ventilation hole 14 is aligned with the air outlet 6. The air inlet 5 and the air outlet 6 are communicated with the ventilation hole 14. Under the guidance of the inclined groove 13, the gas will flow along the inclined direction of the inclined groove 13, and finally be discharged through the ventilation hole 14 and the air outlet 6, so as to ensure the smooth flow of the gas.

[0035] The bottom of the lower shell 4 is provided with a slot 15, and the inner shell 12 is provided with a plug plate 16. The plug plate 16 is matched with the slot 15. The plug plate 16 is inserted into the slot 15. The plug plate 16 is limited by the slot 15, so as to ensure the stability of the inner shell 12. When the inner shell 12 is installed, the relative position relationship between the plug plate 16 and the slot 15 can quickly complete the assembly of the inner shell 12 and the lower shell 4, and effectively improve the convenience of assembly operation.

[0036] The counterweight 7 is embedded on the upper cover body 3. Specifically, in this embodiment, the upper cover body 3 is integrally formed with a protrusion 8. The protrusion 8 is provided with a containing cavity 9 for containing the counterweight 7. The counterweight 7 is arranged in the containing cavity 9 and matched with the containing cavity 9. In the manufacturing process, the counterweight 7 is combined with the upper cover body 3 by one-piece injection molding.

[0037] In this embodiment, the counterweight 7 is in the form of a disc. The counterweight 7 is made of iron material or PA6-GF30 material. As another scheme, the counterweight 7 can also be made of other metal materials. The counterweight 7 increases the mass of the upper cover body 3, changes the mass distribution of the upper cover body 3, and then changes the natural resonance frequency of the air filter, so as to avoid resonance with the engine vibration and reduce the occurrence of resonance phenomenon.

[0038] As follows:

[0039]

[0040] It should be noted that when the counterweight 7 is made of iron, the first-order resonance frequency of the air filter is 155 Hz, the second-order resonance frequency of the air filter is 300 Hz, the third-order resonance frequency of the air filter is 362 Hz, and the fourth-order resonance frequency of the air filter is 411 Hz.

[0041] When the counterweight 7 is made of PA6-GF30, the first-order resonance frequency of the air filter is 255 Hz, the second-order resonance frequency of the air filter is 383 Hz, the third-order resonance frequency of the air filter is 410 Hz, and the fourth-order resonance frequency of the air filter is 442 Hz. Embodiment

[0042] The difference between Embodiment Two and Embodiment One is that, as shown in Figure 7 The sound-absorbing cotton 21 not only allows gas to pass through, but also effectively eliminates noise.

[0043] The specific embodiments described herein are merely illustrative of the spirit of the present application; those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A novel air filter, comprising a housing (1) and a filter element (2), wherein the filter element (2) is detachably disposed within the housing (1), and the housing (1) comprises an upper cover (3) and a lower housing (4), characterized in that: The upper cover (3) is placed on the lower housing (4), and the upper cover (3) and the lower housing (4) are detachably connected. The lower housing (4) is provided with an air inlet (5) and an air outlet (6). Gas flows from the air inlet (5) through the filter element (2) to the air outlet (6). A counterweight (7) is embedded in the upper cover (3).

2. The novel air filter according to claim 1, characterized in that: The counterweight (7) is made of PA6-GF30 material.

3. The novel air filter according to claim 1, characterized in that: The counterweight (7) is made of iron.

4. The novel air filter according to claim 1, characterized in that: The counterweight (7) is disc-shaped.

5. A novel air filter according to claim 1, characterized in that: The upper cover (3) has an integrally formed protrusion (8), and the protrusion (8) has a receiving cavity (9) for accommodating the counterweight (7). The counterweight (7) is disposed in the receiving cavity (9) and the two are compatible.

6. A novel air filter according to claim 1, characterized in that: A sealing gasket (10) is provided between the upper cover (3) and the lower housing (4). A support strip (11) for supporting the filter element (2) is provided inside the lower housing (4). The sealing gasket (10) cooperates with the support strip (11) to clamp the filter element (2).

7. A novel air filter according to claim 1, characterized in that: The lower housing (4) is provided with a detachable inner housing (12). The inner housing (12) is provided with an inclined groove (13). A vent hole (14) is provided in the inclined groove (13). The vent hole (14) is aligned with the air outlet (6). The air inlet (5) and the air outlet (6) are both connected to the vent hole (14).

8. A novel air filter according to claim 7, characterized in that: The bottom of the lower housing (4) is provided with a slot (15), and the inner housing (12) is provided with a plate (16). The plate (16) is adapted to the slot (15) and is inserted into the slot (15).

9. A novel air filter according to claim 8, characterized in that: The upper cover (3) has a plurality of reinforcing ribs (17) formed inside, the plurality of reinforcing ribs (17) are staggered, and the plurality of reinforcing ribs (17) together with the upper cover (3) form a plurality of sound-absorbing cavities (18).

10. A novel air filter according to claim 1, characterized in that: The upper cover (3) has an integrally formed reinforcing frame (19) in the middle, and the reinforcing frame (19) has several through holes (20).

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