A multi-noise reduction function air intake pipe assembly

Abstract

The utility model discloses a kind of multi-reducing noise function's air inlet pipe assembly related to noise reduction technology field, including air inlet pipeline and outer package sound-absorbing sleeve, and outer package sound-absorbing sleeve is connected to air inlet pipeline outside, outer package sound-absorbing sleeve is located at air inlet pipeline outside, and outer package sound-absorbing sleeve and air inlet pipeline are attached, outer package sound-absorbing sleeve includes outer sleeve layer and inner sleeve layer, outer sleeve layer and inner sleeve layer are spaced apart, and outer sleeve layer and inner sleeve layer center are collinear, air inlet pipeline inner side wall is provided with spiral groove, spiral groove is evenly provided with air hole one in spiral in notch, inner sleeve layer is evenly provided with air hole two along the center and is distributed and opened in spiral, microporous foamed aluminum is arranged in the cavity between inner sleeve layer and air inlet pipeline, sound-absorbing cotton is arranged in the cavity between outer sleeve layer and inner sleeve layer, microporous foamed aluminum is evenly provided with gas delivery hole in spiral distribution with center line, gas delivery hole, air hole one and air hole two aperture are equal. The present scheme not only can enhance the noise reduction effect of pipeline, and be conducive to maintenance operation.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology, specifically to an intake pipe assembly with multiple noise reduction functions. Background Technology

[0002] During vehicle operation, the engine generates noise, and noise reduction in the intake manifold is crucial for improving the driving experience. Traditional pipes are prone to generating turbulence and eddies when fluids flow at high speeds, leading to noise pollution.

[0003] In existing technologies, noise reduction for pipelines typically involves the use of mufflers or sound-absorbing materials, but these methods suffer from drawbacks such as inconvenience in maintenance and poor noise reduction effectiveness, hindering their use in pipeline noise reduction. To address this, we propose an intake pipe assembly with multiple noise reduction functions. Utility Model Content

[0004] The purpose of this utility model is to provide an intake pipe assembly with multiple noise reduction functions, so as to solve the problems mentioned in the background art. The existing technology for noise reduction of pipes usually uses mufflers or sound-absorbing materials, but these are not conducive to maintenance, have poor sound reduction effect, etc., which are not conducive to the use of pipe noise reduction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intake pipe assembly with multiple noise reduction functions, comprising an intake pipe and an outer muffler sleeve, wherein the intake pipe and the outer muffler sleeve are connected by bolts, and the outer muffler sleeve is fitted onto the outside of the intake pipe, wherein the outer muffler sleeve is disposed on the outside of the intake pipe and fits snugly against the intake pipe, the outer muffler sleeve comprising an outer layer and an inner layer, wherein the outer layer and the inner layer are spaced apart, and wherein the outer layer and the inner layer... The air intake pipe has a spiral groove on its inner sidewall, and a spiral hole is evenly distributed in the groove opening. A second air hole is evenly distributed in a spiral shape along the center of the inner sleeve. Microporous aluminum foam is placed inside the cavity between the inner sleeve and the air intake pipe. Sound-absorbing cotton is placed inside the cavity between the outer sleeve and the inner sleeve. Air delivery holes are evenly distributed in a spiral shape along the center line of the microporous aluminum foam. The diameters of the air delivery holes, the first air hole, and the second air hole are equal.

[0006] Preferably, the width of the spiral groove is greater than the diameter of the first air hole.

[0007] Preferably, both the first vent and the second vent are through holes, and the axial positions of the first vent and the second vent are staggered.

[0008] Preferably, the intake pipe and the outer silencer sleeve are respectively provided with flange one and flange two at their corresponding ends, and flange one and flange two are connected by bolts.

[0009] Preferably, the air inlet is inclined, and the centerline of the air inlet and the centerline of the air inlet form an angle.

[0010] Preferably, the lengths of the microporous aluminum foam and the sound-absorbing cotton are equal to the length of the outer sound-absorbing sleeve.

[0011] Preferably, the first air vent and the second air vent are connected head-to-head, and the first air vent and the second air vent are internally connected.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This multi-noise-reduction intake pipe assembly, by opening spiral grooves inside the intake pipe, can guide the fluid to flow in a spiral direction, reducing the generation of turbulence and eddies; on the other hand, it can increase the residence time of gas inside the intake pipe, thus making noise reduction more convenient.

[0014] 2. This type of intake pipe assembly with multiple noise reduction functions, by setting an outer sound-absorbing sleeve with microporous aluminum foam and sound-absorbing cotton on the outside of the pipe, after the noisy gas enters the pipe, it is transmitted to the microporous aluminum foam and sound-absorbing cotton through the air inlet and the air outlet for sound absorption treatment, which can further improve the noise reduction effect of the pipe.

[0015] 3. This multi-noise reduction air intake assembly, by setting an inclined air inlet between air inlet one and air inlet two, allows the gas to flow in an approximately "Z" shape after entering through air inlet one, which is more conducive to noise reduction.

[0016] 4. This multi-noise-reduction intake pipe assembly uses bolts to connect flange one and flange two, which facilitates the removal of the outer sound-absorbing sleeve from the intake pipe, making it easy to replace the sound-absorbing material and further ensuring the noise reduction effect of the pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of a half-section of the present invention;

[0019] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram at point M;

[0020] Figure 4 This is a schematic diagram of the half-section structure of the outer sound-absorbing sleeve of this utility model.

[0021] In the diagram: 1. Inlet pipe; 11. Spiral groove; 12. Air hole one; 13. Flange one; 2. Outer sound-absorbing sleeve; 21. Outer jacket; 22. Inner jacket; 23. Air hole two; 24. Flange two; 3. Microporous aluminum foam; 31. Air outlet; 4. Sound-absorbing cotton. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Please refer to Figure 1-4 This utility model provides a technical solution: an intake pipe assembly with multiple noise reduction functions, including an intake pipe 1 and an outer sound-absorbing sleeve 2. The intake pipe 1 and the outer sound-absorbing sleeve 2 are connected by bolts, and the outer sound-absorbing sleeve 2 is sleeved on the outside of the intake pipe 1 and fits the intake pipe 1.

[0024] Please see Figure 2-4 The outer sound-absorbing sleeve 2 includes an outer layer 21 and an inner layer 22. The outer layer 21 and the inner layer 22 are spaced apart, and the centers of the outer layer 21 and the inner layer 22 are collinear. The outer layer 21 and the inner layer 22 are integrally processed, and the inner layer 22 is located inside the outer layer 21.

[0025] Furthermore, the inner wall of the intake duct 1 is provided with a spiral groove 11, and the opening of the spiral groove 11 is provided with uniformly arranged air holes 12 in a spiral shape. The width of the opening of the spiral groove 11 is larger than the diameter of the air holes 12. By providing the spiral groove 11 inside the intake duct 1, the spiral groove 11 can guide the fluid to flow in a spiral direction, reducing the generation of turbulence and eddies; on the other hand, it can increase the residence time of the gas inside the intake duct 1, thus facilitating noise reduction.

[0026] like Figure 2As shown, air holes 23 are spirally distributed along the center of the inner sleeve 22. Microporous aluminum foam 3 is placed inside the cavity between the inner sleeve 22 and the air inlet pipe 1. When sound propagates onto the microporous aluminum foam 3, it causes the air inside the material to vibrate. Because the aluminum foam has a large number of uniformly distributed micropores, the air vibrating in the micropores will rub against the pore walls, converting sound energy into heat energy and thus achieving a sound attenuation effect. Sound-absorbing cotton 4 is placed inside the cavity between the outer sleeve 21 and the inner sleeve 22. The sound-absorbing cotton 4 is usually made of one or more fiber materials. These fibers are specially treated to form a material with a large number of small gaps and a semi-open structure. This structure allows sound waves to rub against the air between the fibers when entering the sound-absorbing cotton, converting sound energy into heat energy, thereby achieving sound attenuation. The lengths of the microporous aluminum foam 3 and the sound-absorbing cotton 4 are equal to the length of the outer sound-absorbing sleeve 2.

[0027] Please see Figure 2 and Figure 3 A spiral pattern of air inlets 31 is evenly distributed along the centerline of the microporous aluminum foam 3. The diameters of air inlets 31, air inlets 12, and air inlets 23 are equal. The air inlets 31 are inclined, and their centerlines form an angle with the centerline of the air inlet pipe 1. Air inlets 12 and 23 are both through holes, and their axial positions are staggered. Air inlets 12 are connected head-to-head with air inlets 31 and 23, and their interiors are interconnected. By setting the inclined air inlets 31 between air inlets 12 and 23, the gas entering through air inlets 12 flows in an approximately "Z" shape, thus facilitating noise reduction.

[0028] In this example, flange 13 and flange 24 are respectively provided at the corresponding ends of the air intake pipe 1 and the outer sound-absorbing sleeve 2, and flange 13 and flange 24 are connected by bolts. By connecting flange 13 and flange 24 with bolts, it is easy to remove the outer sound-absorbing sleeve 2 from the air intake pipe 1, thereby making it easy to replace the sound-absorbing material and further ensuring the sound-absorbing and noise-reducing effect of the pipe.

[0029] Working principle: In this multi-functional noise reduction intake pipe assembly, when noisy gas enters the intake pipe 1, a spiral groove 11 is opened inside the intake pipe 1. The spiral groove 11 guides the fluid to flow in a spiral direction, reducing turbulence and eddies. On the other hand, it increases the residence time of the gas inside the intake pipe 1, thus facilitating noise reduction. The gas entering the spiral groove 11 enters through the air hole 11, causing the gas to flow in an approximately "Z" shape, which further facilitates sound absorption at the microporous aluminum foam 3 and sound-absorbing cotton 4, thereby further improving the noise reduction effect of the pipe.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intake pipe assembly with multiple noise reduction functions, comprising an intake pipe (1) and an outer sound-absorbing sleeve (2), wherein the intake pipe (1) and the outer sound-absorbing sleeve (2) are connected by bolts, characterized in that: The outer silencing sleeve (2) is located outside the air intake pipe (1), and the outer silencing sleeve (2) fits the air intake pipe (1). The outer silencing sleeve (2) includes an outer layer (21) and an inner layer (22). The outer layer (21) and the inner layer (22) are spaced apart, and the centers of the outer layer (21) and the inner layer (22) are collinear. A spiral groove (11) is provided on the inner side wall of the air intake pipe (1). The groove (11) has a spiral groove with uniformly arranged air holes (12) in a spiral shape. The inner sleeve (22) has two air holes (23) arranged in a spiral pattern along its center. The cavity between the inner sleeve (22) and the air inlet pipe (1) is filled with microporous aluminum foam (3). The cavity between the outer sleeve (21) and the inner sleeve (22) is filled with sound-absorbing cotton (4). The microporous aluminum foam (3) has spirally distributed air delivery holes (31) evenly arranged along its center line. The diameters of the air delivery holes (31), air hole one (12) and air hole two (23) are equal.

2. The intake manifold assembly with multiple noise reduction functions according to claim 1, characterized in that: The groove width of the spiral groove (11) is greater than the diameter of the air hole (12).

3. The intake manifold assembly with multiple noise reduction functions according to claim 1, characterized in that: Both the first pore (12) and the second pore (23) are through holes, and the axial positions of the first pore (12) and the second pore (23) are staggered.

4. The intake manifold assembly with multiple noise reduction functions according to claim 1, characterized in that: The intake pipe (1) and the outer sound-absorbing sleeve (2) are respectively provided with flange one (13) and flange two (24) at their respective ends, and flange one (13) and flange two (24) are connected by bolts.

5. The intake manifold assembly with multiple noise reduction functions according to claim 1, characterized in that: The air inlet (31) is inclined, and the center line of the air inlet (31) and the center line of the air inlet pipe (1) form an angle.

6. The intake manifold assembly with multiple noise reduction functions according to claim 1, characterized in that: The lengths of the microporous aluminum foam (3) and the sound-absorbing cotton (4) are equal to the length of the outer sound-absorbing sleeve (2).

7. The intake manifold assembly with multiple noise reduction functions according to claim 1, characterized in that: The first air hole (12) and the air supply hole (31) and the second air hole (23) are connected head to head, and the air supply hole (31), the first air hole (12) and the second air hole (23) are internally connected.

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