CN214616823U - Adjustable frequency air inlet silencer and vehicle - Google Patents
Adjustable frequency air inlet silencer and vehicle Download PDFInfo
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- CN214616823U CN214616823U CN202120460759.3U CN202120460759U CN214616823U CN 214616823 U CN214616823 U CN 214616823U CN 202120460759 U CN202120460759 U CN 202120460759U CN 214616823 U CN214616823 U CN 214616823U
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Abstract
The utility model relates to a silencing device technical field, concretely relates to adjustable frequency silencer and vehicle of admitting air. The frequency-adjustable air inlet silencer comprises a shell, a perforated pipe and a sound adjusting plate, wherein the shell is connected with the perforated pipe and comprises a mounting cavity; the silencing part comprises a plurality of silencing holes, the perforated pipe comprises a sound wave channel, and the silencing holes are communicated with the sound wave channel and the resonance silencing cavity; the sound adjusting plate is located in the resonance silencing cavity, detachably connected with the silencing part and the cavity wall of the mounting cavity and used for partitioning the resonance silencing cavity. Because the sound adjusting plate is detachably connected with the sound eliminating part and the cavity wall of the mounting cavity, the position of the sound adjusting plate can be adjusted according to the frequency of sound waves in actual use, the volume distribution in the resonance sound eliminating cavity is changed, the change of the sound eliminating center frequency of the air inlet silencer can be realized, and the problem that the target frequency section of the sound eliminator in the prior art is not adjustable is solved or partially solved.
Description
Technical Field
The utility model relates to a silencing device technical field, concretely relates to adjustable frequency silencer and vehicle of admitting air.
Background
The automobile silencer is a part for reducing noise generated when an engine of a motor vehicle works, can improve the noise, vibration and sound vibration roughness performance of the automobile, and is widely used. The automobile silencer in the prior art has a fixed silencing frequency section, if the target frequency section of the automobile silencer needs to be changed, a mould needs to be modified, or a rapid sample needs to be specially manufactured, so that the cost is high, and the period is long. For car mufflers used in the tuning phase, this will increase the tuning cost and the tuning cycle.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a silencer admits air of adjustable frequency solves or partially solves the nonadjustable problem of silencer target frequency section in the prior art.
The utility model also provides a vehicle has small in noise's advantage.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a frequency-adjustable air inlet silencer comprises a shell, a perforated pipe and a sound adjusting plate, wherein the shell is connected with the perforated pipe, the shell comprises a mounting cavity, the perforated pipe comprises a silencing part, the silencing part is positioned in the mounting cavity, and a resonance silencing cavity is formed between the silencing part and the wall of the mounting cavity;
the silencing part comprises a plurality of silencing holes, the perforated pipe comprises a sound wave channel, and the silencing holes are communicated with the sound wave channel and the resonance silencing cavity;
the sound adjusting plate is located in the resonance sound eliminating cavity, detachably connected with the sound eliminating part and the cavity wall of the mounting cavity and used for dividing the resonance sound eliminating cavity.
Optionally, the resonant muffling chamber is an annular chamber, and the tuning plate is perpendicular to a midline of the muffling portion.
Optionally, the sound-deadening portion includes a plurality of annular grooves, and the sound-adjusting plate is fitted into the corresponding annular groove.
Optionally, the muffling portion further includes a first partition plate and a second partition plate, the first partition plate is disposed along a diameter direction of the muffling portion, the second partition plate is perpendicular to a center line of the muffling portion, a vent cavity is defined by the muffling portion, the first partition plate, the two second partition plates, and a cavity wall of the installation cavity, and two ends of the annular direction of the tuning board are close to the first partition plate.
Optionally, the perforated pipe still includes the installation department, the installation department with the noise elimination part is located respectively the both ends of perforated pipe, the installation department with noise elimination portion connects, the installation department with the casing is connected, and the shutoff resonance noise elimination chamber with ventilate the chamber.
Optionally, the casing includes the gas outlet, the perforated pipe includes the air inlet, the gas outlet with the air inlet all with the sound wave channel intercommunication, the installation department is close to the air inlet sets up.
Optionally, the tunable frequency intake muffler further comprises a first sealing ring, and the first sealing ring is assembled between the housing and the mounting portion and used for sealing a connection gap between the housing and the mounting portion.
Optionally, the adjustable frequency intake muffler further comprises a fastener, and the housing, the first seal ring and the mounting portion are detachably connected through the fastener.
Optionally, the frequency-adjustable intake silencer further comprises a blocking piece, and the blocking piece is connected with the silencing hole and used for blocking the silencing hole.
A vehicle comprises the adjustable-frequency intake silencer.
The utility model discloses a frequency-adjustable intake silencer, the noise elimination portion of perforated pipe, the chamber wall of installation cavity and the tuning board cooperate and use, form resonance noise elimination chamber between noise elimination portion and the chamber wall of installation cavity, the tuning board is used for cutting apart resonance noise elimination chamber, cuts apart resonance noise elimination chamber into at least one and divides the cavity; because the sound adjusting plate is detachably connected with the sound eliminating part and the cavity wall of the mounting cavity, the position of the sound adjusting plate can be adjusted according to the frequency of sound waves in actual use, the volume distribution in the resonance sound eliminating cavity is changed, the change of the sound eliminating center frequency of the air inlet silencer can be realized, and the problem that the target frequency section of the sound eliminator in the prior art is not adjustable is solved or partially solved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the frequency-adjustable intake silencer of the present invention;
FIG. 2 is a first schematic view of the perforated pipe and the tuning plate shown in FIG. 1;
FIG. 3 is a second schematic view of the perforated pipe and the tuning plate shown in FIG. 1;
FIG. 4 is a third schematic view of the perforated pipe and the tuning plate shown in FIG. 1;
FIG. 5 is a fourth schematic view of the perforated pipe and the tuning plate shown in FIG. 1;
description of reference numerals:
1-a shell; 11-gas outlet;
2-perforating the tube; 21-a sound-deadening portion; 22-a sound-deadening hole; 23-an acoustic channel; 24-an annular groove; 25-a first separator; 26-a second separator; 27-a mounting portion; 28-an air inlet;
3-a first sealing ring; 4-a bolt; 5-a second sealing ring; 6-tone plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, an embodiment of the present application discloses a frequency-tunable intake silencer, which includes a housing 1, a perforated pipe 2, and a tuning board 6, where the housing 1 is connected to the perforated pipe 2, the housing 1 includes a mounting cavity, the perforated pipe 2 includes a silencing portion 21, the silencing portion 21 is located in the mounting cavity, and a resonance silencing cavity is formed between the silencing portion 21 and a cavity wall of the mounting cavity; the muffling part 21 comprises a plurality of muffling holes 22, the perforated pipe 2 comprises a sound wave channel 23, and the muffling holes 22 are communicated with the sound wave channel 23 and the resonant muffling cavity; the sound adjusting plate 6 is located in the resonance sound eliminating cavity, detachably connected with the sound eliminating part 21 and the cavity wall of the mounting cavity, and used for dividing the resonance sound eliminating cavity.
Specifically, the main function of the vehicle air intake system is to provide clean, dry and sufficient air with proper temperature for the engine, reduce the noise of the engine, and improve the noise, vibration and sound vibration roughness performance of the whole vehicle. In the noise of the air inlet 28 of the supercharged engine, the medium-high frequency noise accounts for a relatively large proportion, and for the noise, the perforated pipe 2 is mostly adopted to be matched with a resonance silencing cavity to form a wide-frequency-range air inlet silencer.
The adjustable frequency air inlet silencer comprises a shell 1, a perforated pipe 2 and an acoustic panel 6, wherein the shell 1 is located on the outer side of the adjustable frequency air inlet silencer and comprises a mounting cavity, a component located in the mounting cavity can be protected, and the wall of the mounting cavity is used for forming a resonance silencing cavity.
Perforated pipe 2 includes noise elimination portion 21, and noise elimination portion 21 is the cylindricality tubular structure, and the inboard of noise elimination portion 21 includes sound wave channel 23, and noise elimination portion 21 includes a plurality of noise elimination holes 22, and noise elimination hole 22 is the through-hole, and the quantity, the diameter and the arrangement position of noise elimination hole 22 can be adjusted according to the in-service use demand.
The sound adjusting plates 6 are located in the resonance silencing cavities and used for dividing the resonance silencing cavities, and the number and the positions of the sound adjusting plates 6 can be selected and set according to practical use requirements.
In the frequency-adjustable air inlet silencer, the silencing part 21 of the perforated pipe 2, the cavity wall of the mounting cavity and the sound adjusting plate 6 are matched for use, a resonance silencing cavity is formed between the silencing part 21 and the cavity wall of the mounting cavity, and the sound adjusting plate 6 is used for dividing the resonance silencing cavity into at least one sub-cavity; because the sound adjusting plate 6 is detachably connected with the sound eliminating part 21 and the cavity wall of the installation cavity, the position of the sound adjusting plate 6 can be adjusted according to the frequency of sound waves in actual use, the volume distribution in the resonance sound eliminating cavity is changed, the change of the sound eliminating center frequency of the air inlet silencer can be realized, and the problem that the target frequency section of the sound eliminator in the prior art cannot be adjusted is solved or partially solved.
As shown in fig. 1 to 5, in one embodiment, the resonant muffling chamber is an annular chamber, and the tuning plate 6 is perpendicular to the midline of the muffling portion 21.
As shown in fig. 1, the sound-adjusting plate 6 has an arc-shaped plate-like structure, and the plane in which the sound-adjusting plate 6 is located is perpendicular to the center line of the sound-deadening portion 21.
As shown in fig. 1, in one embodiment, the sound-deadening portion 21 includes a plurality of annular grooves 24, and the sound-adjusting plate 6 is fitted into the corresponding annular grooves 24.
The annular grooves 24 are provided around the center line of the sound-deadening portion 21, and as shown in fig. 1 to 5, the sound-deadening portion 21 includes four annular grooves 24, and one or more sound-adjusting plates 6 are fitted into the corresponding annular grooves 24.
And the scheme of embedding the sound adjusting plate 6 into the annular groove 24 can quickly change the silencing target frequency section, greatly reduce the sound adjusting cost and obviously shorten the period.
In actual use, the number, the spacing, and the like of the annular grooves 24 can be set according to the requirement of sound attenuation.
As shown in fig. 1 to 5, in an embodiment, the muffling portion 21 further includes a first partition plate 25 and a second partition plate 26, the first partition plate 25 is disposed along a diameter direction of the muffling portion 21, the second partition plate 26 is perpendicular to a center line of the muffling portion 21, the first partition plate 25, the two second partition plates 26, and a wall of the mounting cavity define a vent cavity therebetween, and two ends of the tuning board 6 in the annular direction are close to the first partition plate 25.
The breather chamber may be used for gas ducts such as crankcase ventilation ducts.
As shown in fig. 1, in an embodiment, the perforated pipe 2 further includes a mounting portion 27, the mounting portion 27 and the muffling portion 21 are respectively located at two ends of the perforated pipe 2, the mounting portion 27 is connected to the muffling portion 21, and the mounting portion 27 is connected to the housing 1 and seals the resonance muffling chamber and the ventilation chamber.
As shown in fig. 1, the mounting portion 27 is a plate-like structure perpendicular to the sound-deadening portion 21, and the housing 1 includes a flange portion connected to the mounting portion 27.
As shown in fig. 1, in an embodiment, the housing 1 includes an air outlet 11, the perforated pipe 2 includes an air inlet 28, the air outlet 11 and the air inlet 28 are both communicated with the sound wave channel 23, and the mounting portion 27 is disposed near the air inlet 28.
When the frequency-adjustable air inlet silencer is used, air enters from the air inlet 28, flows through the sound wave channel 23 and then flows out from the air outlet 11.
As shown in fig. 1, in an embodiment, the tunable frequency intake muffler further includes a first sealing ring 3, and the first sealing ring 3 is fitted between the housing 1 and the mounting portion 27 to seal a connection gap between the housing 1 and the mounting portion 27.
The first seal ring 3 is used to seal the connection gap between the housing 1 and the mounting portion 27, i.e., to seal the muffler.
As shown in fig. 1, the frequency-adjustable intake muffler further includes a second sealing ring 5, where the second sealing ring 5 is used to seal a gap between the housing 1 and the engine, and cooperates with the first sealing ring 3 to achieve a sealing effect on the muffler.
As shown in fig. 1, in an embodiment, the tunable frequency intake muffler further includes a fastening member, and the housing 1, the first sealing ring 3 and the mounting portion 27 are detachably connected by the fastening member.
The shell 1, the first sealing ring 3 and the mounting part 27 are detachably connected through the fastening piece, and the silencing plate is embedded into the annular groove 24, so that the number and the position of the cavity in the resonance silencing cavity can be manually adjusted, namely, the silencing frequency section of the silencer can be manually adjusted at any time, and the adjustment is simple and convenient.
As shown in figure 1, the fastening piece is a bolt 4, and the bolt 4 can be detached at any time, so that the position of the sound adjusting plate 6 can be adjusted, and internal parameters of the adjustable-frequency air inlet silencer can be conveniently adjusted at any time.
In one embodiment, as shown in fig. 1, the tunable frequency intake muffler further comprises a blocking member connected to the muffling hole 22 for blocking the muffling hole 22.
The adjustable frequency silencer that admits air in this application, shutoff piece pass through shutoff hole 22 that disappears, can adjust the quantity of hole 22 that disappears and arrange the position, and the diameter of hole 22 that disappears is deuterogamied to and the volume of resonance chamber of eliminating noise is cut apart to tuning board 6, can have the collocation of different volume branch cavitys and different hole 22 that disappears, realizes that the silencer target frequency section that admits air is adjustable.
Referring to fig. 1, the working principle of the frequency-adjustable intake silencer is as follows: sound waves enter from the air outlet 11 and are transmitted in the sound wave channel 23; when the sound waves are transmitted to the position of the silencing hole 22, a part of the sound waves are reflected back to the sound wave channel 23 by other sound waves and air, and a part of the sound waves pass through the silencing hole 22 and enter the resonant silencing cavity; when the sound wave frequency is close to the resonance frequency of the resonance silencing cavity, the air medium vibrates and rubs on the wall surface of the silencing hole 22, and under the viscous damping action, the sound wave energy is continuously consumed, so that the silencing purpose is achieved.
As shown in fig. 2 to 5, the annular grooves 24 include four, and the volume of the sub-chamber near the air outlet 11 is gradually increased and the volume of the sub-chamber near the air inlet 28 is gradually decreased from the direction of fig. 2 to 5. By inserting a tuning plate 6 in the different annular recesses 24, the volume of the resonant muffling chamber can be varied, as well as the volume of the sub-chambers.
An embodiment of the application also discloses a vehicle, including foretell adjustable frequency air intake silencer.
Because the vehicle is provided with the frequency-adjustable air inlet silencer, the target frequency section of the silencer can be adjusted according to the use requirement, and the advantage of low vehicle noise is achieved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. The frequency-adjustable air inlet silencer is characterized by comprising a shell (1), a perforated pipe (2) and a sound adjusting plate (6), wherein the shell (1) is connected with the perforated pipe (2), the shell (1) comprises a mounting cavity, the perforated pipe (2) comprises a sound eliminating part (21), the sound eliminating part (21) is positioned in the mounting cavity, and a resonance sound eliminating cavity is formed between the sound eliminating part (21) and the wall of the mounting cavity;
the muffling part (21) comprises a plurality of muffling holes (22), the perforated pipe (2) comprises a sound wave channel (23), and the muffling holes (22) are communicated with the sound wave channel (23) and the resonant muffling cavity;
the sound adjusting plate (6) is located in the resonance sound eliminating cavity, detachably connected with the sound eliminating part (21) and the cavity wall of the mounting cavity and used for dividing the resonance sound eliminating cavity.
2. Tunable frequency intake muffler according to claim 1, characterized in that the resonant muffling chamber is an annular chamber, the muffling plate (6) being perpendicular to the median line of the muffling portion (21).
3. Tunable frequency intake muffler according to claim 1 or 2, characterized in that the muffling portion (21) comprises a plurality of annular grooves (24), the muffling plate (6) being embedded in the corresponding annular groove (24).
4. The tunable frequency intake muffler according to claim 1, wherein the muffling portion (21) further includes a first partition plate (25) and a second partition plate (26), the first partition plate (25) is disposed along a diameter direction of the muffling portion (21), the second partition plate (26) is perpendicular to a center line of the muffling portion (21), a vent chamber is defined between the muffling portion (21), the first partition plate (25), the two second partition plates (26), and a chamber wall of the mounting chamber, and both ends of the ring-shaped direction of the muffling plate (6) are close to the first partition plate (25).
5. The tunable frequency intake muffler according to claim 4, wherein the perforated pipe (2) further comprises a mounting portion (27), the mounting portion (27) and the muffling portion (21) are respectively located at two ends of the perforated pipe (2), the mounting portion (27) and the muffling portion (21) are connected, and the mounting portion (27) is connected to the housing (1) and seals the resonant muffling cavity and the vent cavity.
6. The tunable frequency intake muffler according to claim 5, wherein the housing (1) comprises an air outlet (11), the perforated pipe (2) comprises an air inlet (28), the air outlet (11) and the air inlet (28) both communicate with the sound wave channel (23), and the mounting portion (27) is disposed near the air inlet (28).
7. The tunable frequency intake muffler according to claim 5, further comprising a first seal ring (3), the first seal ring (3) being fitted between the housing (1) and the mounting portion (27) for sealing a connection gap of the housing (1) and the mounting portion (27).
8. The tunable frequency intake muffler according to claim 7, further comprising a fastener by which the housing (1), the first seal ring (3), and the mounting portion (27) are detachably connected.
9. The tunable frequency intake muffler according to claim 1, further comprising a blocking member connected to the muffling aperture (22) for blocking the muffling aperture (22).
10. A vehicle comprising the tunable frequency intake muffler of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120460759.3U CN214616823U (en) | 2021-03-03 | 2021-03-03 | Adjustable frequency air inlet silencer and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120460759.3U CN214616823U (en) | 2021-03-03 | 2021-03-03 | Adjustable frequency air inlet silencer and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN214616823U true CN214616823U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120460759.3U Active CN214616823U (en) | 2021-03-03 | 2021-03-03 | Adjustable frequency air inlet silencer and vehicle |
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| CN (1) | CN214616823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419529A (en) * | 2022-08-29 | 2022-12-02 | 岚图汽车科技有限公司 | Silencer assembly and noise verification method |
-
2021
- 2021-03-03 CN CN202120460759.3U patent/CN214616823U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419529A (en) * | 2022-08-29 | 2022-12-02 | 岚图汽车科技有限公司 | Silencer assembly and noise verification method |
| CN115419529B (en) * | 2022-08-29 | 2024-01-16 | 岚图汽车科技有限公司 | Muffler assembly and noise verification method |
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