Overhead air filter assembly

Abstract

The utility model discloses an overhead air filter assembly which comprises a filter lower shell assembly and a filter upper shell assembly which are arranged on the top of an engine. The lower shell assembly comprises a lower shell, a filter element installed in the lower shell and a high-frequency silencer arranged in the lower shell. A plurality of mounting cavities are formed in the lower shell; according to the air filter, the lower shell assembly integrates the low-frequency resonant cavity, the high-frequency silencing cavity and the filtering cavity, through reasonable cavity division, entering air is effectively guided and filtered, and noise of all frequency bands can be effectively reduced; and the NVH performance of the product is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a top-mounted air filter assembly. Background Art

[0002] The air filter is one of the important parts in the air intake system. It not only cleans and dries the air required by the engine, but also has a great impact on the intake noise. Existing air filters are usually arranged on the side of the engine. With the emergence of extended-range vehicles, the layout of the engine compartment has become more complicated. During the development of the whole vehicle, the installation space left for the air intake system is often very limited, making it difficult to match the air intake system due to insufficient space in the engine compartment, which makes the development process of the whole vehicle more difficult.

[0003] Existing air filters are usually placed on the side of the engine (i.e., side-mounted air filters). When the space in the engine compartment is limited in the X and Y directions, side-mounted air filters cannot be realized. In this case, it is possible to place the air filter on the top of the engine (i.e., top-mounted air filters). However, the Z-direction height of top-mounted air filters is generally relatively short. Therefore, when designing air filters, it is necessary to consider how to arrange the specific structure so that the normal functions can be met while reducing the noise in each frequency band and improving the NVH effect.

[0004] Therefore, it is necessary to improve the existing air filter so that it can effectively solve the problems existing in the prior art. Utility Model Content

[0005] In order to solve the above problems, the air filter of the utility model, the lower shell assembly integrates a low-frequency resonance cavity, a high-frequency silencer cavity and a filter cavity. Through reasonable cavity division, it can not only effectively guide and filter the incoming air, but also effectively reduce the noise in each frequency band; greatly improving the NVH performance of the product.

[0006] The utility model provides a top-mounted air filter assembly, comprising a filter lower housing component and an upper housing component arranged on the top of an engine; the lower housing component comprises a lower housing, a filter element installed in the lower housing, and a high-frequency silencer arranged in the lower housing; a plurality of installation chambers are formed in the lower housing.

[0007] Furthermore, the multiple installation chambers include a low-frequency resonance chamber formed in the lower shell, an air intake chamber arranged adjacent to the low-frequency resonance chamber, a filter chamber for installing a filter element, and a high-frequency silencer chamber for installing a high-frequency silencer; air passes through the low-frequency resonance chamber, the air intake chamber, the filter chamber in sequence and is discharged from the high-frequency silencer chamber.

[0008] Furthermore, a plurality of arc-shaped guide plates are formed in the air inlet chamber by protruding upward in the vertical direction, and the plurality of arc-shaped guide plates are arranged parallel to each other.

[0009] Furthermore, an air inlet is formed between the air inlet chamber and the filter chamber, and a plurality of air inlet guide plates are arranged at the air inlet, and the plurality of air inlet guide plates are arranged parallel to each other.

[0010] Furthermore, an air inlet for air to flow in is provided on the side of the low-frequency resonance cavity, and the low-frequency resonance cavity is communicated with the air inlet chamber.

[0011] Furthermore, the bottom of the filter chamber protrudes upward to form a plurality of cross reinforcement rib structures.

[0012] Furthermore, the upper shell assembly includes an inner lining cover and an outer cover that is installed in conjunction with the inner lining cover. The outer cover is fixedly connected to the inner lining cover and is connected and installed in conjunction with the lower shell assembly.

[0013] Furthermore, the lining cover is formed with crisscross lining cover reinforcement ribs, and an lining frame is formed inside the lining cover.

[0014] Furthermore, the outer edge of the outer cover protrudes outward to form an outer cover positioning portion that cooperates with the lower shell assembly for positioning and installation.

[0015] The beneficial effects of the utility model are as follows: the air filter of the utility model, the lower shell component integrates a low-frequency resonance cavity, a high-frequency silencer cavity and a filter cavity, and can effectively reduce the noise in each frequency band through reasonable cavity division; the upper shell component is a double-layer structure, the outer cover and the inner lining cover are connected as a whole by welding, the outer cover plays a decorative role, and the inner lining plays a sealing role, and due to the addition of the inner lining cover, without changing the existing shell cover mold, the modal performance can be improved by welding a counterweight block on the outer side of the shell cover inner lining, thereby further improving the NVH performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall explosion of the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the lower housing of the utility model;

[0019] Figure 3 This is a schematic diagram of the inner lining cover of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0021] Figure 1This is a schematic diagram of the overall explosion of the utility model; Figure 2 This is a schematic diagram of the interior of the lower housing of the utility model; Figure 3 This is a schematic diagram of the inner lining cover of the utility model; Figure 4 This is a schematic diagram of the overall structure of the utility model. As shown in the figure, the utility model provides a top-mounted air filter assembly, including a filter lower shell component and an upper shell component arranged on the top of the engine; the lower shell component includes a lower shell 3, a filter element 4 installed in the lower shell 3, and a high-frequency silencer 11 arranged in the lower shell 3; a plurality of installation chambers are formed in the lower shell. The lower shell is a "rectangular" structure as a whole, and the multiple chambers inside are reasonably distributed, which can maximize the space utilization rate. The multiple installation chambers play different functional effects and are conducive to improving product performance; the air filter of the utility model, the lower shell component integrates a low-frequency resonance cavity, a high-frequency silencer cavity and a filter cavity. Through reasonable cavity division, it can not only effectively guide and filter the incoming air, but also effectively reduce the noise of each frequency band; greatly improve the NVH performance of the product.

[0022] In this embodiment, the plurality of installation chambers include a low-frequency resonance chamber 6 formed in the lower shell, an air intake chamber 7 arranged adjacent to the low-frequency resonance chamber 6, a filter chamber 10 for installing a filter element, and a high-frequency silencer chamber for installing a high-frequency silencer 11. Air passes through the low-frequency resonance chamber 6, the air intake chamber 7, the filter chamber 10 in sequence and is discharged from the high-frequency silencer chamber. An inner tube 61 is correspondingly installed in the low-frequency resonance chamber 6. The inner tube 61 is fixed in the low-frequency resonance chamber 6 by snap-fitting or other forms, which can further improve the low-frequency noise. A silencer hole is opened on the inner tube 61 to improve the NVH performance in the high-frequency band. The inner tube can be used in the prior art and will not be described here.

[0023] In this embodiment, the air inlet chamber 7 is vertically convex upward to form a plurality of arc-shaped guide plates 8, and the plurality of arc-shaped guide plates 8 are arranged parallel to each other. The arc-shaped guide plates 8 guide the air to flow smoothly to the lower side of the filter element, which can reduce the air intake resistance and facilitate air filtering.

[0024] In this embodiment, an air inlet is formed between the air inlet chamber and the filter chamber, and a plurality of air inlet guide plates 9 are arranged at the air inlet, and the plurality of air inlet guide plates 9 are arranged parallel to each other. The air inlet guide plates 9 cooperate with the arc-shaped guide plates 8 to form an air guiding function, and the plurality of air inlet guide plates 9 arranged parallel to each other can play a supporting and strengthening role at the air inlet, and the air flow is as follows: Figure 1 As shown in the direction of the middle arrow, air enters from the air inlet 5 and flows out from the air outlet 12 after flowing inside.

[0025] In this embodiment, the side of the low frequency resonance cavity 6 is provided with an air inlet 5 for air to flow in, and the low frequency resonance cavity is connected with the air inlet chamber. The two ends of the inner insert tube are respectively arranged at the air inlet 5 and the connecting opening between the low frequency resonance cavity and the air inlet chamber.

[0026] In this embodiment, the bottom of the filter chamber 10 is convex upward to form a plurality of cross reinforcement rib structures 14. The bottom of the filter chamber 10 is convex to form a plurality of reinforcement rib structures, which improves the structural strength of the bottom of the filter chamber 10.

[0027] In this embodiment, the upper shell assembly includes an inner lining cover 2 and an outer cover 1 that is installed in conjunction with the inner lining cover 2. The outer cover 1 is fixedly connected to the inner lining cover 2 and is connected and installed in conjunction with the lower shell assembly. The upper shell assembly is a double-layer structure. The outer cover 1 and the inner lining cover 2 are connected as a whole. The outer cover 1 serves a decorative purpose and the inner lining cover 2 serves a sealing purpose. Since the inner lining cover 2 is added, the modal performance can be improved by welding a counterweight block on the outer side of the shell cover lining without changing the existing shell cover mold, thereby further improving the NVH performance of the product.

[0028] In this embodiment, the inner lining cover 2 is formed with crisscross inner lining cover reinforcement ribs 21, and the inner lining cover is formed with an inner lining frame 22. The inner lining cover reinforcement ribs 21 strengthen the overall structure of the inner lining cover, and the inner lining frame 22 cooperates with the lower shell 3 to form multiple chambers.

[0029] In this embodiment, the outer edge of the outer cover protrudes outward to form an outer cover positioning portion 15 that cooperates with the lower shell assembly for positioning and installation. The outer cover positioning portion 15 cooperates with the lower shell 3 for positioning and installation, and the mounting feet 13 formed on the lower shell 3 cooperate with the vehicle body structure for positioning and installation. The outer surface of the shell cover is simple and elegant, and plays the role of an engine decorative cover. When NVH problems such as resonance and abnormal noise appear on the actual vehicle later, without changing the existing shell cover mold, the mode can be improved by welding a counterweight block on the outer side of the lining cover 2, and the welding position of the counterweight block can be changed according to different mode requirements, thereby realizing the flexible and changeable performance of the shell cover mode, and at the same time, it can effectively shorten the problem rectification cycle and reduce the problem rectification cost.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A top-mounted air filter assembly, characterized in that: It comprises a filter lower housing component and an upper housing component arranged on the top of the engine; the lower housing component comprises a lower housing, a filter element installed in the lower housing and a high-frequency silencer arranged in the lower housing; a plurality of installation chambers are formed in the lower housing.

2. The overhead air filter assembly according to claim 1, characterized in that: The multiple installation chambers include a low-frequency resonance chamber formed in the lower shell, an air intake chamber arranged adjacent to the low-frequency resonance chamber, a filter chamber for installing a filter element, and a high-frequency silencer chamber for installing a high-frequency silencer; air passes through the low-frequency resonance chamber, the air intake chamber, the filter chamber in sequence and is discharged from the high-frequency silencer chamber.

3. The overhead air filter assembly according to claim 2 is characterized in that: The air inlet chamber is convexly upwardly in the vertical direction to form a plurality of arc-shaped guide plates, and the plurality of arc-shaped guide plates are arranged parallel to each other.

4. The overhead air filter assembly according to claim 2 is characterized in that: An air inlet is formed between the air inlet chamber and the filter chamber, and a plurality of air inlet guide plates are arranged at the air inlet, and the plurality of air inlet guide plates are arranged parallel to each other.

5. The overhead air filter assembly according to claim 2, characterized in that: An air inlet for air to flow in is provided on the side of the low-frequency resonance cavity, and the low-frequency resonance cavity is communicated with the air inlet chamber.

6. The overhead air filter assembly according to claim 2, characterized in that: The bottom of the filter chamber protrudes upward to form a plurality of cross reinforcement rib structures.

7. The overhead air filter assembly according to claim 1, characterized in that: The upper shell assembly includes an inner lining cover and an outer cover that is installed in conjunction with the inner lining cover. The outer cover is connected to the inner lining cover by welding and is connected and installed in conjunction with the lower shell assembly.

8. The overhead air filter assembly according to claim 7, characterized in that: The inner lining cover is formed with crisscross inner lining cover reinforcement ribs, and an inner lining frame is formed inside the inner lining cover.

9. The overhead air filter assembly according to claim 7, characterized in that: The outer edge of the outer cover protrudes outward to form an outer cover positioning portion that cooperates with the lower shell assembly for positioning and installation.

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