Noise reduction air filter

Abstract

The utility model discloses a noise reduction air filter which comprises an air filter shell and a filter element arranged in the shell, the filter element divides the interior of the shell into an air inlet cavity and an air outlet cavity, an air inlet and an air outlet are formed in the air inlet cavity and the air outlet cavity respectively, and an air inlet pipe and an air outlet pipe are installed on the air inlet and the air outlet respectively. The air inlet pipe is provided with an extension pipe part which extends into the air inlet cavity and extends to the filter element; the air outlet pipe is provided with an extension pipe part which extends into the air outlet cavity and extends to the filter element; the air flow stroke of the air inlet pipe and the air outlet pipe is increased through the extending pipe parts, then the air inlet pipe and the air outlet pipe are fully utilized for buffering and absorbing high-frequency vibration of air inlet, the extending pipe parts are fixed through the connecting columns on the cavity wall of the air filter shell, and resonance generated by air inlet vibration of the air inlet pipe and the air outlet pipe is avoided; and the source of noise is reduced.

Description

Technical Field

[0001] The utility model relates to the field of air filters. Background Art

[0002] An air filter is a device that filters impurities in the air through a filter element and is generally used in the filter system of an engine. When the engine is working, it needs to absorb the air filtered by the air filter. During the process of the engine working, the air entering the air filter flows rapidly and generates high-frequency vibrations. These vibrations are radiated and amplified through the air filter housing, air inlet pipe, air outlet pipe and other components, forming noise, which affects people's comfort. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a noise reduction air filter.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A noise reduction air filter comprises an air filter housing and a filter element arranged in the housing, the filter element divides the housing into an air inlet cavity and an air outlet cavity, the air inlet cavity and the air outlet cavity are respectively provided with an air inlet port and an air outlet port, the air inlet port and the air outlet port are respectively installed with an air inlet pipe and an air outlet pipe; the air inlet pipe has an extension pipe portion extending into the air inlet cavity and extending to the filter element, the cavity wall of the air inlet cavity is provided with a connecting column I for fixing the extension pipe portion of the air inlet pipe; the air outlet pipe has an extension pipe portion extending into the air outlet cavity and extending to the filter element, the cavity wall of the air outlet cavity is provided with a connecting column II for fixing the extension pipe portion of the air outlet pipe.

[0006] The extended pipe parts of the air inlet pipe and the air outlet pipe are both provided with connecting lugs for fixed installation with the connecting column I and the connecting column II.

[0007] An air guide cover is installed in the air intake cavity. The air guide cover is an arc-shaped raised structure cover arranged on the air intake side of the filter element to form the air guide cavity. The extended pipe part of the air intake pipe extends into the air guide cavity.

[0008] The extended pipe portion of the air intake pipe is inclined away from the filter element along a direction away from the air intake.

[0009] The intake pipe includes an intake pipe body, an inlet portion and an outlet portion located at both ends of the intake pipe body, and a mounting plate radially extending on the intake pipe body. The intake pipe body is clamped on the air inlet through the mounting plate, and the intake pipe body between the outlet portion and the mounting plate is arranged in the air intake cavity to form the extended pipe portion.

[0010] The inlet and outlet of the air intake pipe body are both provided with auricle structures.

[0011] The air intake pipe body is provided with reinforcing ribs.

[0012] The air outlet pipe includes an air outlet pipe body, an inlet portion and an outlet portion located at both ends of the air outlet pipe body, and a mounting ring radially extending on the air outlet pipe body. The air outlet pipe body is clamped on the air outlet through the mounting ring, and the air outlet pipe body between the inlet portion and the mounting ring is arranged in the air outlet cavity to form the extended pipe portion.

[0013] The inlet and outlet of the air outlet pipe body are both provided with auricle structures.

[0014] The air outlet pipe body is provided with reinforcing ribs.

[0015] The beneficial effect of the utility model is that the air inlet pipe and the air outlet pipe of the utility model are both provided with extension pipe parts extending into the air inlet cavity and the air outlet cavity of the air filter housing, so as to increase the air flow stroke of the air inlet pipe and the air outlet pipe, and then make full use of the air inlet pipe and the air outlet pipe to buffer and absorb the high-frequency vibration of the intake air, and the extension pipe parts are respectively fixed by connecting columns of the cavity wall of the air filter housing, so as to avoid resonance of the air inlet pipe and the air outlet pipe caused by the intake vibration and reduce the source of noise. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 This is the first split schematic diagram of the utility model;

[0020] Figure 4 This is the second split schematic diagram of the utility model. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 4A noise reduction air filter comprises an air filter housing 1 and a filter element 2 arranged in the housing 1, the filter element 2 divides the housing 1 into an air inlet chamber 3 and an air outlet chamber 4, the air inlet chamber 3 and the air outlet chamber 4 are respectively provided with an air inlet 31 and an air outlet 41, the air inlet 31 and the air outlet 41 are respectively provided with an air inlet pipe 5 and an air outlet pipe 6, the air inlet pipe 5 has an extension pipe portion 7 extending into the air inlet chamber 3 and extending to the filter element 2, the air outlet pipe 6 has an extension pipe portion 7 extending into the air outlet chamber 4 and extending to the filter element 2, the air inlet pipe 5 is provided with an extension pipe portion 7 extending into the air outlet chamber 4 and extending to the filter element 2, and ... The air flow path of the air intake pipe 5 and the air outlet pipe 6 is optimized, thereby making full use of the air intake pipe 5 and the air outlet pipe 6 to buffer and absorb the high-frequency vibration of the intake air; a connecting column Ⅰ32 for fixing the extension pipe part 7 of the air intake pipe 5 is provided on the cavity wall of the air intake cavity 3; a connecting column Ⅱ42 for fixing the extension pipe part 7 of the air outlet pipe 6 is provided on the cavity wall of the air outlet cavity 4, and the extension pipe part 7 is fixed by the connecting columns of the cavity wall of the air filter housing 1 respectively, so as to avoid the resonance of the air intake pipe 5 and the air outlet pipe 6 caused by the intake vibration and reduce the source of noise.

[0022] As a preferred embodiment of the utility model, the extension tube portions 7 of the air inlet pipe 5 and the air outlet pipe 6 are provided with connecting lugs 71 for fixing with the connecting columns Ⅰ32 and Ⅱ42, and screws pass through the connecting lugs 71 and are fixedly connected with the connecting columns to fix the extension tube portions 7.

[0023] As a preferred embodiment, an air guide hood 8 is installed in the air intake cavity 3. The air guide hood 8 is an arc-shaped raised structure cover arranged on the air intake side of the filter element 2 to form an air guide cavity 81. The extended pipe portion 7 of the air intake pipe 5 extends into the air guide cavity 81. The air coming out of the air intake pipe 5 is directly guided to the filter element 2 through the air guide hood 8, thereby reducing the possibility of the incoming airflow colliding with other structures in the air intake cavity 3 to generate noise.

[0024] As a preferred solution, the extended tube portion 7 of the air intake pipe 5 is tilted away from the filter element 2 along the air intake direction to prevent the airflow entering from the air intake pipe 5 from directly hitting the filter element 2, causing gravel, debris, etc. brought in by the airflow to directly hit the filter element 2 and damage the filter element 2.

[0025] As a preferred solution, the air inlet pipe 5 includes an air inlet pipe body 51, an inlet portion and an outlet portion located at both ends of the air inlet pipe body 51, and a mounting plate 52 radially extending and arranged on the air inlet pipe body 51. The air inlet pipe body 51 is clamped on the air inlet port 31 through the mounting plate 52, and the air inlet pipe body 51 between the outlet portion and the mounting plate 52 is arranged in the air inlet cavity 3 to form the extended pipe portion 7. The air outlet pipe 6 includes an air outlet pipe body 61, an inlet portion and an outlet portion located at both ends of the air outlet pipe body 61, and a mounting ring 62 radially extending and arranged on the air outlet pipe body 61. The air outlet pipe body 61 is clamped on the air outlet port 41 through the mounting ring 62, and the air outlet pipe body 61 between the inlet portion and the mounting ring 62 is arranged in the air outlet cavity 4 to form the extended pipe portion 7. Preferably, the inlet and outlet of the air inlet pipe body 51 and the inlet of the air outlet pipe body 61 are all provided with auricle structures 9, which can reduce the vibration of the inlet and outlet caused by the high-frequency airflow entering the air filter, thereby reducing noise. Preferably, the air inlet pipe body 51 and the air outlet pipe body 61 are provided with reinforcing ribs, which are used to increase the structural strength of the air inlet pipe body 51 and the air outlet pipe body 61 to further resist the high-frequency vibration of the airflow and further reduce the generation of noise.

Claims

1. A noise reduction air filter, comprising an air filter housing (1) and a filter element (2) arranged in the housing (1), wherein the filter element (2) divides the housing (1) into an air inlet chamber (3) and an air outlet chamber (4), wherein the air inlet chamber (3) and the air outlet chamber (4) are respectively provided with an air inlet (31) and an air outlet (41), and the air inlet (31) and the air outlet (41) are respectively provided with an air inlet pipe (5) and an air outlet pipe (6), wherein: The air intake pipe (5) has an extension pipe portion (7) extending into the air intake cavity (3) and extending to the filter element (2); a connecting column I (32) for fixing and installing the extension pipe portion (7) of the air intake pipe (5) is provided on the cavity wall of the air intake cavity (3); The air outlet pipe (6) has an extension pipe portion (7) extending into the air outlet cavity (4) and extending to the filter element (2), and a connecting column II (42) for fixing and installing the extension pipe portion (7) of the air outlet pipe (6) is provided on the cavity wall of the air outlet cavity (4).

2. The noise reduction air filter according to claim 1, characterized in that: The extended pipe parts (7) of the air inlet pipe (5) and the air outlet pipe (6) are both provided with connecting lugs (71) for fixing and mounting with the connecting column I (32) and the connecting column II (42).

3. The noise reduction air filter according to claim 1, characterized in that: An air guide cover (8) is installed in the air intake cavity (3); the air guide cover (8) is an arc-shaped raised structure cover arranged on the air intake side of the filter element (2) to form an air guide cavity (81); and the extended pipe portion (7) of the air intake pipe (5) extends into the air guide cavity (81).

4. The noise reduction air filter according to claim 1, characterized in that: The extension pipe portion (7) of the air intake pipe (5) is inclined away from the filter element (2) along a direction away from the air intake.

5. The noise reduction air filter according to any one of claims 1 to 3, characterized in that: The air intake pipe (5) comprises an air intake pipe body (51), an inlet portion and an outlet portion located at both ends of the air intake pipe body (51), and a mounting plate (52) radially extending and arranged on the air intake pipe body (51); the air intake pipe body (51) is clamped on the air inlet (31) through the mounting plate (52); the air intake pipe body (51) between the outlet portion and the mounting plate (52) is arranged in the air intake cavity (3) to form the extended pipe portion (7).

6. The noise reduction air filter according to claim 5, characterized in that: The inlet and outlet portions of the air inlet pipe body (51) are both provided with auricle structures (9).

7. The noise reduction air filter according to claim 5, characterized in that: The air intake pipe body (51) is provided with reinforcing ribs.

8. The noise reduction air filter according to any one of claims 1 to 3, characterized in that: The air outlet pipe (6) comprises an air outlet pipe body (61), an inlet portion and an outlet portion located at both ends of the air outlet pipe body (61), and a mounting ring (62) radially extending and arranged on the air outlet pipe body (61); the air outlet pipe body (61) is clamped on the air outlet (41) through the mounting ring (62); the air outlet pipe body (61) between the inlet portion and the mounting ring (62) is arranged in the air outlet cavity (4) to form the extended pipe portion (7).

9. The noise reduction air filter according to claim 8, characterized in that: The inlet portion of the air outlet pipe body (61) is provided with an auricle structure (9).

10. The noise reduction air filter according to claim 8, characterized in that: The air outlet pipe body (61) is provided with reinforcing ribs.

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