Novel noise elimination type air filter assembly

Abstract

The utility model discloses a novel noise elimination type air filter assembly. A noise elimination device integrally formed with an air filter shell is arranged at the gap position between mounting holes of the air filter shell. The silencing device comprises a parting cavity panel and a plurality of partition plates, the partition plates divide a plurality of silencing cavities, through pipes are arranged at the positions, corresponding to the silencing cavities, of the parting cavity panel, and an inner cavity of the air filter is communicated with the silencing cavities through the through pipes. On the premise that the filtering function of the air filter assembly is guaranteed, the silencing function is enhanced; noise of different frequencies can be effectively absorbed and attenuated by optimizing the size and layout of the through pipes and adjusting the number of the silencing cavities, so that the transmitted noise is more accurately dealt with, and the acoustic comfort in a cockpit is improved; the structure is compact, the space is effectively utilized, the problem that silencing elements of an air inlet system of a commercial vehicle are difficult to arrange is solved, the development cost is reduced, and meanwhile the performance and reliability of products are kept.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle intake system silencing, in particular to a novel silencing type air filter assembly. Background Art

[0002] Among the many factors that affect driving comfort, noise control is particularly critical. In order to improve this aspect, automobile manufacturers continue to explore improvements to the intake system to reduce the noise generated by the engine.

[0003] As a core component in the air intake system, the air filter must not only perform basic air purification tasks but also provide effective noise reduction functions to provide drivers with a quieter and more comfortable driving environment. Some common air intake system noise reduction solutions and their limitations are as follows:

[0004] High-position air intake duct integrated silencer component solution: High-position air intake ducts are usually formed using a 2D blow molding process. However, this process results in uneven material thickness and large volume tolerances for the silencer components, which affects the silencer effect. Furthermore, the integrated silencer components occupy pipe space, increase resistance in the high-position air intake duct, and reduce water removal efficiency.

[0005] Solution for adding silencer components to pipelines: The quarter-wavelength tube or resonant cavity installed in the pipeline needs to be developed separately, and the connection and fixing schemes must be considered. This not only places higher requirements on system layout, but also increases system development costs.

[0006] Solution of adding a cavity to the air filter outlet: This solution achieves the purpose of noise reduction by adding a cavity to the air filter outlet, but this will increase the overall length of the air filter and place more stringent requirements on the boundaries of the air filter. In addition, this molding process is poor and the production cost is high. Summary of the Invention

[0007] In light of this, the present invention provides a novel silencer-type air filter assembly to address the technical issues of existing solutions, which have high spatial requirements, are difficult to deploy, and have numerous adverse effects on cost and manufacturability. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is provided below. This summary is not intended to be a comprehensive review, identify key or important components, or delineate the scope of protection for these embodiments. Its sole purpose is to present some concepts in a simplified form, serving as a prelude to the detailed description that follows.

[0008] The utility model adopts the following technical solutions:

[0009] A new type of silencer air filter assembly is provided, comprising: an air filter housing, a silencer device integrally formed with the air filter housing is provided at the gap position between the mounting holes of the air filter housing, the silencer device comprising: a silencer housing, a parting cavity panel and a plurality of partitions; the parting cavity panel is provided at the connection position between the silencer housing and the air filter housing, so that a cavity independent of the air filter inner cavity is formed inside the silencer housing, the partition is provided in the silencer housing and divides the formed cavity into a plurality of silencer cavities, and through-pipes are provided on the parting cavity panel at positions corresponding to the respective silencer cavities, the through-pipes connecting the air filter inner cavity with the respective silencer cavities.

[0010] Furthermore, the novel silencer air filter assembly also includes: a sealing cover; the silencer housing is an open shell structure integrally formed with the air filter housing, and the sealing cover is arranged at the opening of the silencer housing and closes the formed cavity to form a sealed silencer cavity.

[0011] Furthermore, the through-tube is a cylindrical tubular structure with openings at both ends, and is arranged on a side of the parting cavity panel facing the muffler cavity.

[0012] Furthermore, four mounting holes are provided on the side of the air filter housing, and the four mounting holes are arranged in a matrix.

[0013] Furthermore, the novel silencer air filter assembly further includes: a filter element, which is arranged in the inner cavity of the air filter.

[0014] Furthermore, an air inlet is provided on a side surface of the air filter housing, and an air outlet is provided on an end surface of the air filter housing.

[0015] Furthermore, the novel silencer air filter assembly further includes: a drain valve, which is arranged on the side of the air filter housing and located on the side of the silencer device.

[0016] Beneficial effects brought about by the utility model:

[0017] 1. Under the premise of ensuring the filtering function of the air filter assembly, enhance the muffler function;

[0018] 2. By optimizing the size and layout of the through-tubes and adjusting the number of anechoic chambers, noise of different frequencies can be effectively absorbed and attenuated, allowing for more precise response to outgoing noise, thereby improving cockpit acoustic comfort.

[0019] 3. The structural parameters are stable, which can solve the complex NVH problems of the intake system and improve the overall comfort and reliability of the vehicle;

[0020] 4. The basic structure of the silencer cavity and the air filter assembly are integrated into one, which not only has a compact structure and effectively utilizes space, but also solves the problem of difficult arrangement of silencer components in the commercial vehicle intake system, making the installation and maintenance of components more convenient, and can reduce development costs while maintaining product performance and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of a new type of silencer air filter assembly of the utility model;

[0023] Figure 2 This is a cross-sectional view of a new type of silencer air filter assembly of the utility model;

[0024] Figure 3 It is a schematic diagram of the internal structure of the silencer of the utility model. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the embodiments described are only a portion of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0026] like Figure 1-3 As shown, in some illustrative embodiments, a new type of silencer air filter assembly is provided, which provides a new solution for solving the NVH problem of the intake system, can effectively solve the noise problem in multiple frequency ranges, thereby improving the comfort in the cockpit. The air filter assembly specifically includes: an air filter basic structure and a silencer 6, wherein the air filter basic structure includes: a filter element 2, an air filter housing 4, a lower cover 11 and a drain valve 9.

[0027] The interior of the air filter housing 4 defines an air filter cavity 44. The filter element 2 is housed within this cavity, filtering the air entering the engine and removing dust and other particulate matter. High-efficiency filter materials are used to ensure clean air with minimal resistance. The air filter housing 4 is the main structure of the air filter, providing protection and support for the filter element 2. It features an air inlet 1 on its side for air intake and an air outlet 3 on its end for filtered air to exit.

[0028] Lower cover 11 seals the bottom of air filter housing 4 and is connected to the housing via spring clips 5. These ensure a tight seal between lower cover 11 and housing 4, while also facilitating maintenance and replacement of filter element 2. Drain valve 9, located on the side of air filter housing 4 and flanking muffler 6, facilitates drainage of accumulated water within the air filter. Its position takes into account the layout of muffler 6 to ensure drainage efficiency.

[0029] The side of the air filter housing 4 is provided with four mounting holes 8, which are arranged in a matrix. The design of the mounting holes 8 takes into account the coordination between the air filter and other vehicle components, so that the air filter assembly can be easily installed on the vehicle, and the matrix arrangement ensures the structural strength and installation stability of the housing. The silencer 6 is located in the gap between the mounting holes 8 of the air filter housing 1, that is, the silencer 6 utilizes the existing structural space of the housing and does not require additional space, thereby maintaining the compactness of the overall size of the air filter. Moreover, since the silencer 6 is formed by means of the gap between the mounting holes 8 of the air filter housing 1, there is no need to develop a separate mold for the silencer, which reduces the cost of mold design and manufacturing, and also shortens the product design to production cycle.

[0030] The silencer 6 and the air filter housing 4 are integrally formed. The air filter housing 4 is injection molded, and the silencer 6 is formed simultaneously during the injection molding process. This design not only improves the overall rigidity and durability, but also reduces the assembly steps and development costs. Specifically, the silencer 6 includes: a silencer housing 601, a parting cavity panel 604, and a plurality of partitions 606. The parting cavity panel 604 is arranged at the junction of the silencer housing 601 and the air filter housing 4, so that a cavity independent of the air filter cavity 44 is formed inside the silencer housing 601, thereby achieving the silencer function without affecting the air filtering function. The partitions 606 are arranged in the silencer housing 601 and divide the formed cavity into a plurality of silencer cavities 602. That is, the parting cavity panel 604 serves as the bottom cavity wall of the silencer cavity 602, and the silencer housing 601 and the partitions 606 constitute the side cavity walls of the silencer cavity 602.

[0031] The number of muffler cavities 602 needs to be designed according to the noise frequency of the intake system.

[0032] The novel silencer air filter assembly of the present application also includes a sealing cover 7 for sealing the opening of the silencer housing 601. The silencer housing 601 is an open-type housing structure integrally formed with the air filter housing 4. The sealing cover 7 is positioned at the opening of the silencer housing 601 and seals the formed cavity, thereby forming a sealed silencer chamber 602. The sealing cover 7 can be secured to the air filter assembly via plastic welding or threaded fastening. The design of the sealing cover 7 ensures the sealing of the silencer chamber 602, preventing unfiltered and unsilenced air from directly entering the engine, while maintaining the acoustic properties of the chamber.

[0033] A through-tube 607 is provided on the parting cavity panel 604 at a position corresponding to each silencer cavity 602. The through-tube 607 connects the air filter inner cavity 44 with each silencer cavity 602, forming a channel for air flow, which is also a path for sound wave propagation. The through-tube 607 is a cylindrical tubular structure with openings at both ends, and is provided on the side of the parting cavity panel 604 facing the silencer cavity 602. This structure helps to guide air flow and interfere with sound waves. The diameter and height of the through-tube 607 in each silencer cavity 602 are different. This is to optimize the design for different silencer frequencies. The difference in diameter and height will affect the propagation speed and interference effect of the sound wave in the through-tube 607, thereby producing different silencer effects on noises of different frequencies. By separately processing noises of different frequencies, the novel silencer air filter assembly of the present application can more effectively reduce the overall noise level.

[0034] The silencer 6 is integrally formed with the air filter housing 4 using an injection molding process. During the injection molding process, the silencer cavity 602 is simultaneously formed. The sealing cover 7 is then installed to form a sealed silencer cavity 602. The silencer cavity 602 and the through-tube 607 together form a resonant cavity. The resonant cavity utilizes the resonance effect to absorb sound waves. Within the resonant cavity, air vibrates within a closed space, creating a resonant frequency that absorbs sound waves of a specific frequency. When the frequency of a sound wave matches the resonant frequency within the resonant cavity, the sound wave is absorbed, thereby reducing sound reflection and propagation.

[0035] The new silencer air filter assembly of the present application not only has a filtering function, but also integrates a silencer device to realize the silencer function. The air filter assembly has two cavities. The first cavity (the inner cavity of the air filter) is used to assemble the filter element 2 to realize the filtering function of the air filter. The second cavity is decomposed into multiple silencer cavities 602 according to the silencer requirements, and is connected to the first cavity through a through pipe 607 to form multiple resonant cavities, and silence is performed using the resonant cavity principle.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A new type of silencer air filter assembly, including: An air filter housing, characterized in that a silencer integrally formed with the air filter housing is provided at a gap between the mounting holes of the air filter housing, the silencer comprising: a silencer housing, a parting cavity panel, and a plurality of partitions; The parting cavity panel is arranged at the connection position of the silencer housing and the air filter housing, so that a cavity independent of the air filter inner cavity is formed inside the silencer housing, the partition is arranged in the silencer housing and divides the formed cavity into several silencer cavities, and through pipes are provided on the parting cavity panel at positions corresponding to each of the silencer cavities, and the through pipes connect the air filter inner cavity with each of the silencer cavities.

2. A novel muffler air filter assembly according to claim 1, characterized in that: Also includes: Sealing cover; The muffler housing is an open housing structure integrally formed with the air filter housing. The sealing cover is arranged at the opening of the muffler housing and seals the formed cavity to form the sealed muffler cavity.

3. The novel muffler air filter assembly according to claim 2 is characterized in that: The through-tube is a cylindrical tubular structure with two ends open, and is arranged on a side of the parting cavity panel facing the muffler cavity.

4. A novel muffler air filter assembly according to claim 3, characterized in that: Four mounting holes are provided on the side of the air filter housing, and the four mounting holes are arranged in a matrix.

5. The novel muffler air filter assembly according to claim 4 is characterized in that: Also includes: The filter element is arranged in the inner cavity of the air filter.

6. The novel muffler air filter assembly according to claim 5 is characterized in that: An air inlet is provided on the side surface of the air filter housing, and an air outlet is provided on the end surface of the air filter housing.

7. The novel muffler air filter assembly according to claim 6 is characterized in that: Also includes: A drain valve is provided on a side of the air filter housing and located on a side of the muffler.

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