Air filter integrated with anti-sound-wave noise reduction device for automobile

Abstract

The utility model relates to the technical field of automobile air inlet systems, in particular to an air filter integrated with an anti-sound-wave noise reduction device for an automobile. Comprising an air filter shell, a cavity is formed in the air filter shell, a filter element is arranged in the cavity, an air inlet port and an air outlet port which are communicated with the cavity are formed in the air filter shell, and an anti-sound-wave noise reduction device is further arranged in the cavity and comprises at least one noise sensor unit used for monitoring and collecting noise signals; an anti-acoustic wave generation unit for generating an anti-acoustic wave; the signal processing and control unit is used for processing and analyzing the noise signals collected by the noise sensor unit and controlling the anti-sound wave generation unit to generate sound waves with opposite phases, amplitudes and frequencies; and the power supply unit supplies power to the noise sensor unit, the signal processing and control unit and the anti-sound wave generation unit. The anti-sound-wave noise reduction device has the advantages of being simple in structure, remarkable in noise reduction effect, intelligent in control and the like, and has wide application prospects and popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive intake systems, and particularly refers to an air filter integrated with an anti-sound wave noise reduction device for automobiles. Background Art

[0002] Currently, the traditional intake system air filter on automobiles mainly reduces intake noise through passive means such as sound-absorbing cavities and porous materials, thereby reducing the discomfort brought to passengers by the noise generated during vehicle operation. The method of passive sound absorption is often limited by material properties and structural design, and real-time variable noise reduction cannot be achieved. Therefore, such passive sound absorption methods cannot ensure stable sound absorption effects.

[0003] Although traditional sound absorption methods have good application for medium and high-frequency noises, sufficient vehicle space is required for effective noise reduction of low-frequency noises. Due to the limited space inside the engine compartment of the vehicle, it is not convenient to set up too many and large sound absorption structures. Therefore, corresponding effective solutions cannot be well proposed for low-frequency noises.

[0004] With the development of the automotive industry, in order to further improve the comfort of vehicle rides, the requirements for vehicle noise control are increasing day by day. Currently, a more intelligent and effective noise reduction solution is urgently needed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an air filter integrated with an anti-sound wave noise reduction device for automobiles to improve the problem of ineffective noise reduction for low-frequency noises under the condition of limited volume of the automotive engine compartment.

[0006] The purpose of the utility model is achieved as follows:

[0007] An air filter integrated with an anti-sound wave noise reduction device for automobiles includes an air filter housing. A cavity is formed inside the air filter housing. A filter element is arranged in the cavity. The air filter housing is formed with an air inlet port and an air outlet port that conduct the cavity. An anti-sound wave noise reduction device is also arranged in the cavity, which includes:

[0008] At least one noise sensor unit for monitoring and collecting noise signals;

[0009] An anti-sound wave generation unit for generating anti-sound waves;

[0010] A signal processing and control unit for processing and analyzing the noise signals collected by the noise sensor unit and controlling the anti-sound wave generation unit to generate sound waves with opposite phases, amplitudes, and frequencies;

[0011] A power supply unit for supplying power to the noise sensor unit, the signal processing and control unit, and the anti-sound wave generation unit.

[0012] Preferably, the anti-sound wave noise reduction device further includes a circuit board, and the noise sensor unit, the anti-sound wave generation unit, the signal processing and control unit, and the power supply unit are arranged on the circuit board;

[0013] The circuit board is fixed inside the air filter housing.

[0014] Preferably, an assembly groove is formed on the air filter housing, and the anti-sound wave noise reduction device is arranged in the assembly groove;

[0015] The power supply unit includes a power socket and a power cord, and the power cord is used for connecting the power socket and a power source;

[0016] When the anti-sound wave noise reduction device is fixed inside the air filter housing, the power socket extends out of the air filter housing from the assembly groove.

[0017] Preferably, a sound absorption cavity and a filtering cavity are formed inside the air filter housing, and the filter element is arranged in the filtering cavity;

[0018] The anti-sound wave noise reduction device is arranged in the sound absorption cavity, and the sound absorption cavity is connected to the air outlet port.

[0019] Preferably, the air filter housing includes an upper housing and a lower housing that can be connected to each other;

[0020] A first partition part and an air outlet are formed on the upper housing;

[0021] A second partition part and an air inlet are formed on the lower housing;

[0022] When the upper housing and the lower housing are connected, the area between the first partition part, the second partition part, the air inlet and the air outlet forms a filtering cavity;

[0023] And the cooperation between the first partition part and the air inlet can fix one end of the filter element, and the cooperation between the second partition part and the air outlet can fix the other end of the filter element, so that the filter element is fixed in the filtering cavity.

[0024] Preferably, when the upper housing and the lower housing are connected to form the air filter housing, the air inlet is communicated with the air intake port, and the air outlet is communicated with the air outlet port;

[0025] A front filtering part is formed between the air inlet, the filter element and the second partition part; a rear filtering part is formed between the air outlet, the filter element and the first partition part.

[0026] Preferably, the filter element includes a sealing member and a filter medium, and the sealing member and the filter medium are integrally formed by injecting glue;

[0027] The seal is formed with a pressing part and a second limiting convex ring part;

[0028] The upper shell is formed with a first limiting convex ring part, and the second limiting convex ring part can be sleeved outside the first limiting convex ring part;

[0029] When the upper shell and the lower shell are connected, the seal is clamped between the upper shell and the lower shell, and the pressing part abuts against the periphery of the filter element.

[0030] Preferably, several hinge parts are further formed on the lower shell, and a rotating buckle is hinged on the hinge parts;

[0031] Several connecting seats are protrudingly formed on the upper shell, and locking grooves are formed on the connecting seats;

[0032] When the upper shell and the lower shell are connected, by rotating the rotating buckle, the locking end of the rotating buckle can be placed into the locking groove to lock between the upper shell and the lower shell.

[0033] Preferably, several connecting lugs are protrudingly formed on the upper shell, several connecting seats are formed on the lower shell, and the connecting seats and the connecting lugs are in one-to-one correspondence.

[0034] A connecting groove is formed on the connecting seat, and the connecting lug can be inserted into the connecting groove to fix one end of the upper shell and one end of the lower shell.

[0035] Preferably, an unlocking pressing piece is formed on the locking end, and by pressing the unlocking pressing piece, the locking end can be disengaged from the locking groove.

[0036] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0037] 1. By providing an anti-sound wave noise reduction device inside the air filter of the vehicle to cancel the noise generated during the intake process of the vehicle engine, the NVH (Noise, Vibration, Harshness) performance of the vehicle is improved. Thus, without expanding the volume of the engine compartment, the internal space of the air filter is effectively utilized to set the anti-sound wave noise reduction device to achieve the purpose of reducing noise.

[0038] 2. The anti-sound wave noise reduction device integrated with a noise sensor unit, a signal processing unit and a control unit can perform real-time analysis on the noise generated during the intake process of the engine, and can control the anti-sound wave generating unit to generate sound waves with opposite phases, amplitudes and frequencies, so as to more effectively eliminate noise.

[0039] 3. The anti - acoustic wave noise reduction device in this technical solution is arranged on the upper housing of the air filter. After the upper housing of the air filter is opened, it is convenient to assemble the anti - acoustic wave noise reduction device. Moreover, the power socket of the power supply unit extends out of the housing of the air filter, which also enables users to connect power to the anti - acoustic wave noise reduction device without the need to open the air filter.

[0040] 4. The anti - acoustic wave noise reduction device in this technical solution has the advantages of simple structure, remarkable noise reduction effect, intelligent control, etc., and has broad application prospects and promotion value. Brief Description of the Drawings

[0041] Figure 1 is the structural schematic diagram of the air filter of the present utility model;

[0042] Figure 2 is the cross - sectional view of the air filter of the present utility model;

[0043] Figure 3 is the structural schematic diagram of the anti - acoustic wave noise reduction device of the present utility model;

[0044] Figure 4 is the partial cross - sectional view when the anti - acoustic wave noise reduction device of the present utility model is arranged inside the air filter housing;

[0045] Figure 5 is the exploded view of the air filter of the present utility model;

[0046] Figure 6 is the structural diagram of the other side of the upper housing and the seal of the present utility model;

[0047] Figure 7 is Figure 2 the enlarged view of part A in

[0048] Figure 8 is Figure 2 the enlarged view of part B in

[0049] Figure 9 is the partial view of the air filter of the present utility model;

[0050] Figure 10 is the cross - sectional view at the hinge part and the locking seat when the upper housing and the lower housing of the present utility model are connected;

[0051] Figure 11 is Figure 5 the enlarged view of part C in

[0052] Figure 12 is Figure 5 the enlarged view of part D in

[0053] Figure 13 is Figure 5 the enlarged view of part E in

[0054] Reference numerals:

[0055] 1. Air filter housing; 11. Upper housing; 110. First limiting convex ring part; 12. Lower housing; 13. Intake port; 14. Exhaust port; 15. Assembly groove; 151. Assembly hole; 16. Connecting bump; 17. Connecting seat; 18. Connecting groove; 19. Sound absorption cavity;

[0056] 2. Anti - acoustic wave noise reduction device; 21. Circuit board; 22. Fixed bolt;

[0057] 3. Noise sensor unit;

[0058] 4. Anti - acoustic wave generation unit;

[0059] 5. Signal processing and control unit;

[0060] 6. Power supply unit; 61. Power socket;

[0061] 7. Filter cavity; 71. First partition part; 72. Second partition part; 73. Air inlet; 74. Air outlet; 75. Filter front end; 76. Filter rear end; 77. Filter element; 78. Seal; 781. Pressing part; 782. Second limiting convex ring part; 79. Filter material;

[0062] 8. Hinge part; 81. Rotating buckle; 82. Locking end; 83. Hinge end; 84. Lower reinforcing rib; 85. Unlocking pressing piece; 86. Insertion hole; 87. Hanging groove;

[0063] 9. Locking seat; 91. Locking groove; 92. Upper reinforcing rib. Detailed implementation mode

[0064] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0065]

Embodiment 1

[0066] As Figure 1 and Figure 2 shown, an air filter for an automobile integrated with an anti - acoustic wave noise reduction device includes an air filter housing 1. A cavity is formed inside the air filter housing 1, and a filter element 77 is arranged in the cavity. The filter element 77 is used to filter impurities in the air flow.

[0067] The air filter housing 1 is formed with an intake port 13 and an exhaust port 14 that conduct the cavity. The air flow enters the inside of the air filter housing 1 through the intake port 13, passes through the filtration of the filter element 77, and then leaves the air filter through the exhaust port 14.

[0068] An anti - acoustic wave noise reduction device 2 is also arranged in the cavity.

[0069] During the operation of the vehicle engine, the intake system will inevitably generate noise, which will bring an uncomfortable riding experience to passengers. However, due to the limited space in the engine compartment of the vehicle, and the sizes of many mufflers are generally large, it is difficult to install them in a compact space. In this technical solution, the anti-sound wave noise reduction device 2 is arranged in the cavity inside the air filter of the intake system, so that without changing the layout of the equipment in the engine compartment, the space in the engine compartment can be more effectively utilized to install the sound insulation device.

[0070] The anti-sound wave noise reduction device 2 includes:

[0071] At least one noise sensor unit 3, which is used to monitor and collect noise signals in real time in the area.

[0072] The anti-sound wave generating unit 4 can generate anti-sound waves to cancel the sound waves of the noise after receiving the noise signals collected by the noise sensor unit 3, so as to achieve the purpose of noise reduction.

[0073] The signal processing and control unit 5 is used to process and analyze the noise signals collected by the noise sensor unit 3, and through methods such as fast Fourier transform (FFT), filtering, and phase adjustment, to achieve precise analysis of the noise signals, and control the anti-sound wave generating unit 4 to precisely generate sound waves with opposite phases, amplitudes, and frequencies.

[0074] The power supply unit 6 supplies power to the noise sensor unit 3, the signal processing and control unit 5, and the anti-sound wave generating unit 4.

[0075] In this technical solution, the anti-sound wave generating unit 4 can use a speaker or a special anti-sound wave generator to generate anti-sound waves.

[0076] In the actual working environment, the phase, amplitude, and frequency of the noise always change continuously, and the passive sound insulation structure cannot well cope with the changes in the noise. Therefore, in this technical solution, by adopting the active sound insulation method, the signal processing and control unit 5 is arranged in the anti-sound wave noise reduction device 2 to be able to process and analyze the noise signals, so that the anti-sound wave generating unit 4 generates anti-sound waves.

[0077] Since the phase, amplitude, and frequency of the anti-sound waves generated by the anti-sound wave generating unit 4 are all opposite to those of the original noise sound waves, the anti-sound waves and the original noise sound waves will contact and cancel each other inside the air filter, so as to more effectively and precisely eliminate the intake noise, reduce the discomfort brought by the noise to passengers, effectively improve the NVH performance of the vehicle, and improve the experience of passengers.

[0078] In the active noise cancellation mode, the phase, amplitude, and frequency of the generated anti-sound wave are automatically adjusted according to the real-time changes in the noise, enabling it to meet the noise reduction requirements under different working conditions.

[0079] As a preferred embodiment, the noise sensor unit in this technical solution can use a microphone to collect noise signals.

[0080] Furthermore, since a microphone may not always collect noise signals well. Therefore, multiple noise sensor units 3 can be arranged inside the engine compartment to collect noise signals at more positions, improving the accuracy of the anti-sound wave signals analyzed by the signal processing and control unit 5.

[0081] Specifically, as Figure 3 shown, the anti-sound wave noise reduction device 2 further includes a circuit board 21, and the noise sensor unit 3, anti-sound wave generation unit 4, signal processing and control unit 5, and power supply unit 6 are arranged on the circuit board 21.

[0082] In this embodiment, fixing bolts 22 can be passed through the periphery of the circuit board 21, and the circuit board 21 and the noise sensor unit 3, anti-sound wave generation unit 4, signal processing and control unit 5, and power supply unit 6 thereon are fixed inside the air filter housing 1 by screwing with the fixing bolts 22.

[0083] As Figures 1 - 4 shown, an assembly groove 15 is formed on the air filter housing 1, and the anti-sound wave noise reduction device 2 is arranged in the assembly groove 15.

[0084] When the anti-sound wave noise reduction device 2 is fixed inside the air filter housing 1, the power supply unit 6 includes a power cord and a power socket 61. The wiring terminal of the power socket 61 extends out of the air filter housing 1 from the assembly groove 15 and is connected to the power supply of the vehicle through the power cord, thereby supplying power to the noise sensor unit 3, anti-sound wave generation unit 4, signal processing and control unit 5, and power supply unit 6.

[0085] An assembly hole 151 is formed in the assembly groove 15. When the anti-sound wave noise reduction device 2 is fixed inside the air filter housing 1, the power socket 61 can extend out of the air filter housing 1 from the assembly hole 151 to facilitate the user to connect the power cord.

[0086] As Figure 2 、 Figure 5 and Figure 6 shown, a sound absorption cavity 19 and a filtering cavity 7 are formed inside the air filter housing 1, and the filter element 77 is arranged in the filtering cavity 7.

[0087] The anti-sound wave noise reduction device 2 is arranged in the sound absorption cavity 19, and the sound absorption cavity 19 is connected to the air outlet port 14, enabling the anti-sound wave noise reduction device 2 to be closer to the engine to improve the sound absorption efficiency.

[0088] Furthermore, since the silencing cavity 19 is connected to the filtration rear end 76 of the filtration cavity 7, and the assembly groove 15 and the anti-sound wave noise reduction device 2 are both arranged in the silencing cavity 19. Therefore, in order to avoid secondary pollution when the purified air flow enters the silencing cavity 19 from the filtration rear end 76, a sealing structure can be arranged on the periphery of the assembly hole 151 to prevent the unfiltered air outside from entering the silencing cavity 19 and mixing with the purified air flow, so as to ensure the purification effect of the air filter.

[0089] As Figure 2 、 Figure 5 and Figure 6 shown, the air filter housing 1 includes an upper housing 11 and a lower housing 12 that can be connected to each other.

[0090] A first partition portion 71 and an air outlet 74 are formed on the upper housing 11;

[0091] A second partition portion 72 and an air inlet 73 are formed on the lower housing 12;

[0092] When the upper housing 11 and the lower housing 12 are connected, the end of the first partition portion 71 abuts against the air inlet 73; the end of the second partition portion 72 abuts against the air outlet 74, so that the first partition portion 71, the second partition portion 72, the air inlet 73 and the air outlet 74 cooperate with each other to partition the filtration cavity 7 inside the air filter housing 1.

[0093] Moreover, the cooperation between the first partition portion 71 and the air inlet 73 can fix one end of the filter element 77, and the cooperation between the second partition portion 72 and the air outlet 74 can fix the other end of the filter element 77, so that the filter element 77 is fixed in the filtration cavity 7.

[0094] And because the first partition portion 71 and the air inlet 73 abut against each other, and the second partition portion 72 and the air outlet 74 abut against each other, it can play a role in guiding the air flow direction, so that the air flow can pass through the filtration cavity 7 according to the design requirements.

[0095] When the upper housing 11 and the lower housing 12 are connected to form the air filter housing 1, the air inlet 73 is communicated with the air intake port 13, and the air outlet 74 is communicated with the air outlet port 14. A filtration front end 75 is formed between the air inlet 73, the filter element 77 and the second partition portion 72; a filtration rear end 76 is formed between the air outlet 74, the filter element 77 and the first partition portion 71.

[0096] So that the air entering the air filter through the air intake port 13 can pass through the air inlet 73 and enter the filtration front end 75, and after being filtered by the filter element 77, it enters the filtration rear end 76, and then leaves the air filter through the air outlet 74 and the air outlet port 14 in sequence.

[0097] In this embodiment, the upper housing 11 is recessed and formed into a first partition portion 71, and the lower housing 12 is recessed and formed into a second partition portion 72. The first partition portion 71 and the second partition portion 72 are in a V shape, and a plurality of reinforcing ribs are arranged inside the concave side to increase the structural strength of the upper housing 11 and the lower housing 12.

[0098] As Figures 5 - 8 shown, the air filter housing 1 includes an upper housing 11 and a lower housing 12 that can be connected to each other;

[0099] Among them, the first partition portion 71 and the air outlet 74 are formed on the upper housing 11;

[0100] The second partition portion 72 and the air inlet 73 are formed on the lower housing 12.

[0101] When the upper housing 11 and the lower housing 12 are connected, the end of the first partition portion 71 abuts against the air inlet 73. When the air flow enters the air filter through the air inlet port 13, due to the blockage of the first partition portion 71, the air flow can only enter the front end 75 of the filter through the air inlet 73.

[0102] The end of the second partition portion 72 abuts against the air outlet 74. When the air flow flows in the front end 75 of the filter, since the flow of the air flow in the front end 75 of the filter is blocked by the second partition portion 72, the air flow can only enter the rear end 76 of the filter through the filter element 77 and leave the filter cavity 7 through the air outlet 74, ensuring that the air flow is fully filtered.

[0103] Furthermore, the air inlet port 13 is also arranged on the lower housing 12. Since both the air inlet port 13 and the air inlet 73 are arranged on the lower housing 12, when the air flow enters the air filter through the air inlet port 13, the air flow can smoothly enter the front end 75 of the filter, reducing the resistance received by the air flow and facilitating the entry of the air flow.

[0104] Furthermore, the noise sensor unit 3 is arranged at the outlet of the rear end 76 of the filter, so that the noise sensor unit 3 can collect more accurate noise information, facilitating the more accurate generation of anti-sound waves by the anti-sound wave noise reduction device 2 to eliminate noise.

[0105] As Figures 5 - 8 and Figure 10 shown, the filter element 77 includes a seal 78 and a filter medium 79, and the seal 78 and the filter medium 79 are integrally formed by injecting glue. The seal 78 can abut against the upper end of the lower housing 12. When the upper housing 11 and the lower housing 12 are connected, the seal 78 can not only play a role in closing the filter cavity 7, but also fix the position of the filter medium 79, so that the filter medium 79 can fully cover the filter cavity 7, ensuring the filtration of the air flow.

[0106] The seal 78 is formed with a pressing portion 781 and a second limiting convex ring portion 782.

[0107] A limiting convex ring part one 110 is formed on the upper shell 11. The limiting convex ring part two 782 can be sleeved on the outside of the limiting convex ring part one 110, so as to fix the position between the seal 78 and the upper shell 11, facilitating subsequent precise installation.

[0108] When the upper shell 11 and the lower shell 12 are connected, the seal 78 is clamped between the upper shell 11 and the lower shell 12, and the pressing part 781 abuts against the periphery of the filter element 77, so that the pressing part 781 can play the role of restricting the movement of the filter element 77.

[0109] During the driving of the vehicle, it is inevitable that the vehicle will jolt and so on. When the vehicle shakes due to this, it is easy to drive the filter element 77 to shake, resulting in the filter element 77 not completely covering the filter cavity 7 due to position movement. The unfiltered air flow may directly pass through the air filter, thus affecting the working efficiency of the air filter.

[0110] Specifically as Figure 2 and Figure 6 shown, the anti-sound wave noise reduction device 2 is fixed on the upper shell 11. The assembly groove 15 is arranged on the upper shell 11, so that the power socket 61 of the power supply unit 6 can pass through the upper shell 11.

[0111] When the upper shell 11 and the lower shell 12 are connected, the noise sensor unit 3 of the anti-sound wave noise reduction device 2 fixed on the upper shell 11 can be aligned with the air outlet 74, so that the noise sensor unit 3 can more directly receive the noise signal and make the collected noise information more accurate.

[0112] Such as Figure 5 and Figures 9 - 13 shown, several hinge parts 8 are also formed on the lower shell 12, and a rotating buckle 81 is hinged on the hinge part 8.

[0113] Both ends of the rotating buckle 81 are respectively formed into a locking end 82 and a hinge end 83, and the locking end 82 and the hinge end 83 are connected to each other through an arc-shaped connecting part.

[0114] Among them, the hinge end 83 is used to be connected with the hinge part 8, so that the rotating buckle 81 can rotate around the hinge end 83.

[0115] A hanging groove 87 is formed inside the hinge part 8, and a penetrating hole 86 is opened below the hinge part 8.

[0116] The hinge end 83 is hook-shaped, so that the end of the hinge end 83 can penetrate into the inside of the hinge part 8 through the penetrating hole 86, and finally the hinge end 83 is hung in the hanging groove 87.

[0117] A plurality of locking seats 9 are integrally formed and protruded on the upper housing 11, and a locking groove 91 is formed on the locking seat 9.

[0118] When the upper housing 11 and the lower housing 12 are connected, by rotating the rotating buckle 81, the locking end 82 of the rotating buckle 81 can be placed into the locking groove 91 to lock between the upper housing 11 and the lower housing 12.

[0119] Furthermore, a plurality of connecting bumps 16 are integrally formed and protruded on the upper housing 11, and a plurality of connecting seats 17 are formed on the lower housing 12, and the connecting seats 17 and the connecting bumps 16 correspond to each other one by one.

[0120] A connecting groove 18 is formed on the connecting seat 17, and the connecting bump 16 can be inserted into the connecting groove 18 to fix one end of the upper housing 11 and one end of the lower housing 12, and also facilitate aligning the positions between the locking seat 9 and the hinged portion 8.

[0121] As Figure 9 and Figure 10 shown, an unlocking pressing piece 85 is formed on the locking end 82. By pressing the unlocking pressing piece 85, the locking end 82 can be tilted up, so as to disengage the locking end 82 from the locking groove 91, which is convenient for the user to operate the air filter housing 1.

[0122] An upper reinforcing rib 92 is formed on the locking seat 9, and a lower reinforcing rib 84 is formed on the hinged portion 8.

[0123] When the upper housing 11 and the lower housing 12 are connected, the upper reinforcing rib 92 and the lower reinforcing rib 84 abut against each other to improve the structural strength.

[0124]

Embodiment 2

[0125] This embodiment is basically the same as Embodiment 1, and the difference lies in:

[0126] The power supply unit 6 of the anti - acoustic wave noise reduction device 2 is a built - in power supply. The user can place a battery into the power supply unit 6, so that the power supply unit 6 can supply power to the noise sensor unit 3, the anti - acoustic wave generation unit 4, the signal processing and control unit 5, and the power supply unit 6.

[0127] The above - mentioned embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

[0128] It should be noted that the structures, proportions, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present utility model. Therefore, they do not have any technical substance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0129] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or it can also be indirectly connected to the other element through an intermediate element.

[0130] In addition, the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. An air filter with an integrated anti-sound wave noise reduction device for an automobile, comprising an air filter housing (1). A cavity is formed inside the air filter housing (1), and a filter element (77) is arranged in the cavity. The air filter housing (1) is formed with an air inlet port (13) and an air outlet port (14) that conduct the cavity. It is characterized in that: An anti-acoustic noise reduction device (2) is further provided in the cavity, which includes: At least one noise sensor unit (3) for monitoring and collecting noise signals; An anti-acoustic wave generating unit (4) for generating anti-acoustic waves; A signal processing and control unit (5) for processing and analyzing the noise signals collected by the noise sensor unit (3) and controlling the anti-acoustic wave generating unit (4) to generate sound waves with opposite phases, amplitudes, and frequencies; A power supply unit (6) for supplying power to the noise sensor unit (3), the signal processing and control unit (5), and the anti-acoustic wave generating unit (4).

2. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 1, characterized in that: The anti-acoustic noise reduction device (2) further includes a circuit board (21), and the noise sensor unit (3), the anti-acoustic wave generating unit (4), the signal processing and control unit (5), and the power supply unit (6) are arranged on the circuit board (21); The circuit board (21) is fixed in the air filter housing (1).

3. The air filter of an integrated anti-acoustic noise reduction device for an automobile according to claim 2, characterized in that: An assembly groove (15) is formed on the air filter housing (1), and the anti-acoustic noise reduction device (2) is arranged in the assembly groove (15); The power supply unit (6) includes a power socket (61) and a power cord for connecting the power socket (61) and a power source; When the anti-acoustic noise reduction device (2) is fixed in the air filter housing (1), the power socket (61) extends out of the air filter housing (1) from the assembly groove (15).

4. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 1 or 2 or 3, characterized in that: A sound absorption cavity (19) and a filtering cavity (7) are formed in the air filter housing (1), and the filter element (77) is arranged in the filtering cavity (7); The anti-acoustic noise reduction device (2) is arranged in the sound absorption cavity (19), and the sound absorption cavity (19) is connected to the air outlet port (14).

5. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 4, characterized in that: The air filter housing (1) includes an upper housing (11) and a lower housing (12) that can be connected to each other; A first partition portion (71) and an air outlet (74) are formed on the upper housing (11); A second partition portion (72) and an air inlet (73) are formed on the lower housing (12); When the upper housing (11) and the lower housing (12) are connected, the area between the first partition portion (71), the second partition portion (72), the air inlet (73), and the air outlet (74) forms the filtering cavity (7); And the cooperation between the first partition portion (71) and the air inlet (73) can fix one end of the filter element (77), and the cooperation between the second partition portion (72) and the air outlet (74) can fix the other end of the filter element (77), so that the filter element (77) is fixed in the filtering cavity (7).

6. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 5, characterized in that: When the upper housing (11) and the lower housing (12) are connected to form the air filter housing (1), the air inlet (73) is communicated with the air intake port (13), and the air outlet (74) is communicated with the air outlet port (14); A filtering front end (75) is formed between the air inlet (73), the filter element (77), and the second partition portion (72); a filtering rear end (76) is formed between the air outlet (74), the filter element (77), and the first partition portion (71).

7. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 5, characterized in that: The filter element (77) includes a seal (78) and a filter medium (79), and the seal (78) and the filter medium (79) are integrally formed by injecting glue; A pressing portion (781) and a second limiting convex ring portion (782) are formed on the seal (78); A first limiting convex ring portion (110) is formed on the upper housing (11), and the second limiting convex ring portion (782) can be sleeved outside the first limiting convex ring portion (110); When the upper housing (11) and the lower housing (12) are connected, the seal (78) is clamped between the upper housing (11) and the lower housing (12), and the pressing portion (781) abuts against the periphery of the filter element (77).

8. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 5, characterized in that: A plurality of hinge portions (8) are further formed on the lower housing (12), and a rotating buckle (81) is hinged on the hinge portion (8); A plurality of connecting seats (9) are protrudingly formed on the upper housing (11), and a locking groove (91) is formed on the connecting seat (9); When the upper housing (11) and the lower housing (12) are connected, by rotating the rotating buckle (81), the locking end (82) of the rotating buckle (81) can be placed into the locking groove (91) to lock between the upper housing (11) and the lower housing (12).

9. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 8, characterized in that: A plurality of connecting bumps (16) are protrudingly formed on the upper housing (11), and a plurality of connecting seats (17) are formed on the lower housing (12), and the connecting seats (17) and the connecting bumps (16) are in one-to-one correspondence; A connecting groove (18) is formed in the connecting seat (17), and the connecting bump (16) can be inserted into the connecting groove (18) to fix one end of the upper housing (11) and one end of the lower housing (12).

10. The air filter of an integrated anti-sound wave noise reduction device for an automobile according to claim 9, characterized in that: An unlocking pressing piece (85) is formed on the locking end (82), and by pressing the unlocking pressing piece (85), the locking end (82) can be disengaged from the locking groove (91).

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