Muffler of vehicle and vehicle

Abstract

The utility model discloses a silencer of a vehicle and the vehicle, and relates to the technical field of vehicles. The silencer comprises a shell, a plurality of partition plates, an air inlet pipe, a first air outlet pipe and a first silencing pipe, the partition plates are all arranged in the cavity and distributed at intervals in the first direction so as to divide the cavity into a plurality of sub-cavities, the air inlet pipe is communicated with the third sub-cavity, the first silencing pipe is arranged in the cavity and communicated with the first sub-cavity and the third sub-cavity, and the first silencing pipe is communicated with the first air outlet pipe. The part of the first air outlet pipe is arranged in the cavity and communicates with the first sub-cavity and the outside, and the pipe wall, located in the second sub-cavity, of the first silencing pipe is provided with a plurality of first through holes. Air flow flows into the third sub-cavity through the air inlet pipe and expands in the third sub-cavity, the air flow in the third sub-cavity can flow into the first silencing pipe, part of the air flow in the first silencing pipe can flow into the second sub-cavity through the first through hole, and the other part of the air flow can flow into the first sub-cavity and pass through the first air outlet pipe. And the vehicle use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a muffler of a vehicle and the vehicle. Background Art

[0002] While consumers are pursuing vehicle power, they are also paying more and more attention to the acoustic quality of vehicles. In order to give vehicles a broader market prospect, it is imperative to reduce noise when designing the exhaust system.

[0003] In the related art, the measures for reducing the noise of the vehicle exhaust system are not perfect, and the noise of the exhaust system cannot be reduced well, which affects the user's car experience. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a muffler for a vehicle, which can effectively reduce noise and improve the user's vehicle experience.

[0005] The utility model further provides a vehicle.

[0006] The muffler of a vehicle according to an embodiment of the utility model includes: a shell, which defines a cavity; a plurality of partition plates, which are all arranged in the cavity and arranged at intervals along a first direction to divide the cavity into a plurality of sub-cavities; an air intake pipe, a first air outlet pipe and a first muffler, the plurality of sub-cavities include a first sub-cavity, a second sub-cavity and a third sub-cavity arranged in sequence along the first direction, the air intake pipe is connected to the third sub-cavity, the first muffler is arranged in the cavity and connects the first sub-cavity and the third sub-cavity, a portion of the first air outlet pipe is arranged in the cavity and connects the first sub-cavity and the outside of the muffler, and the tube wall of the first muffler located in the second sub-cavity has a plurality of first through holes.

[0007] According to the muffler of the vehicle in the embodiment of the utility model, the airflow flows into the third sub-cavity through the air intake pipe and expands in the third sub-cavity, the airflow in the third sub-cavity can flow into the first muffler pipe, part of the airflow in the first muffler pipe can flow into the second sub-cavity through the first through hole, and the other part of the airflow can flow into the first sub-cavity and pass through the first outlet pipe. This muffler can effectively reduce noise to enhance the user's car experience.

[0008] According to some embodiments of the utility model, the muffler of the vehicle further includes: a second air outlet pipe and a second silencer pipe, the multiple sub-cavities further include a fourth sub-cavity and a fifth sub-cavity, along the first direction, the third sub-cavity, the fourth sub-cavity and the fifth sub-cavity are arranged in sequence, the second silencer pipe is arranged in the cavity and connects the fifth sub-cavity and the third sub-cavity, part of the second air outlet pipe is arranged in the cavity and connects the fifth sub-cavity and the outside of the muffler, and the tube wall of the second silencer pipe located in the fourth sub-cavity has a plurality of second through holes.

[0009] According to some embodiments of the utility model, the plurality of partition plates include: a first partition plate, a second partition plate, a third partition plate, and a fourth partition plate. Along the first direction, the first partition plate, the second partition plate, the third partition plate, and the fourth partition plate are arranged in sequence to divide the cavity into the first sub-cavity, the second sub-cavity, the third sub-cavity, the fourth sub-cavity, and the fifth sub-cavity.

[0010] According to some embodiments of the present invention, the first air outlet pipe is sequentially arranged through the first partition plate, the second partition plate, the third partition plate, the fourth partition plate, and the shell.

[0011] According to some embodiments of the present invention, a tube wall of the first air outlet pipe located in the second sub-cavity has a plurality of third through holes.

[0012] According to some embodiments of the utility model, the muffler of the vehicle also includes: a third muffler pipe, the third muffler pipe is arranged in the fifth sub-cavity, the third muffler pipe is sleeved on the outside of the first air outlet pipe to define a first muffler cavity together with the first air outlet pipe, the tube wall of the first air outlet pipe has a plurality of fourth through holes connected to the first muffler cavity; the tube wall of the third muffler pipe has a plurality of fifth through holes.

[0013] According to some embodiments of the present invention, the second air outlet pipe is sequentially arranged through the fourth partition plate, the third partition plate, the second partition plate, the first partition plate, and the shell.

[0014] According to some embodiments of the present invention, a tube wall of the second air outlet pipe located in the fourth sub-cavity has a plurality of sixth through holes.

[0015] According to some embodiments of the utility model, the muffler of the vehicle also includes: a fourth muffler pipe, the fourth muffler pipe is arranged in the first sub-cavity, the fourth muffler pipe is sleeved on the outside of the second air outlet pipe to define a second muffler cavity together with the second air outlet pipe, the tube wall of the second air outlet pipe has a plurality of seventh through holes connected to the second muffler cavity; the tube wall of the fourth muffler pipe has a plurality of eighth through holes.

[0016] A vehicle according to an embodiment of the utility model includes the above-mentioned vehicle muffler.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of a muffler of a vehicle according to an embodiment of the utility model (noise-reducing material is omitted);

[0020] Figure 2 It is a schematic diagram of a muffler of a vehicle according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] Shell 1;

[0023] A first partition plate 21; a second partition plate 22; a third partition plate 23; a fourth partition plate 24; a support plate 25;

[0024] Intake pipe 3;

[0025] A first silencer pipe 41; a second silencer pipe 42; a third silencer pipe 43; a fourth silencer pipe 44;

[0026] A first sub-cavity 51; a second sub-cavity 52; a third sub-cavity 53; a fourth sub-cavity 54; a fifth sub-cavity 55;

[0027] A first air outlet pipe 61; a second air outlet pipe 62;

[0028] A first through hole 71; a second through hole 72; a third through hole 73; a fifth through hole 75; a sixth through hole 76; an eighth through hole 78;

[0029] Sound-absorbing materials 80;

[0030] Muffler 100. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] Reference below Figure 1 and Figure 2 A muffler 100 for a vehicle according to an embodiment of the present invention is described.

[0033] like Figure 1 and Figure 2 As shown, the muffler 100 of a vehicle according to an embodiment of the utility model comprises: a housing 1, a plurality of partition plates, an air inlet pipe 3, a first air outlet pipe 61 and a first muffler pipe 41, the housing 1 defines a cavity, the plurality of partition plates are arranged in the cavity and along a first direction (i.e. Figure 1 The cavity is divided into a plurality of sub-cavities, the plurality of sub-cavities including the cavity along the first direction (ie, the X direction shown in FIG. Figure 1 The first sub-cavity 51, the second sub-cavity 52 and the third sub-cavity 53 are arranged in sequence (in the X direction shown in the figure), the air inlet pipe 3 is connected to the third sub-cavity 53, the first silencer 41 is arranged in the cavity and connects the first sub-cavity 51 and the third sub-cavity 53, part of the first air outlet pipe 61 is arranged in the cavity and connects the first sub-cavity 51 and the outside of the muffler 100, and the pipe wall of the first silencer 41 located in the second sub-cavity 52 has a plurality of first through holes 71.

[0034] Among them, the shell 1 is the outer shell part of the muffler 100, and the wall surface of the shell 1 can be provided with reinforcing ribs to enhance the mode of the shell 1. A plurality of partition plates are provided in the shell 1, and the plurality of partition plates are fixedly connected to the shell 1. As some embodiments of the present application, the shell 1 and the plurality of partition plates can be assembled in a manner of interference fit. As some embodiments of the present application, the shell 1 and the plurality of partition plates can be assembled in a manner of welding. As some embodiments of the present application, the shell 1 and the plurality of partition plates can be assembled in a manner of a combination of interference fit and welding to enhance the stability of the connection between the shell 1 and the plurality of partition plates and improve the overall structural strength.

[0035] The housing 1 defines a cavity, and a plurality of partition plates are disposed in the cavity. The plurality of partition plates are arranged along a first direction (i.e. Figure 1 The cavity is divided into a plurality of sub-cavities, the plurality of sub-cavities including the cavity along the first direction (ie, the X direction shown in FIG. Figure 1 The first sub-cavity 51, the second sub-cavity 52 and the third sub-cavity 53 are arranged in sequence (in the X direction shown in the figure), the first silencer 41 can be constructed as a tubular structure with openings at both ends, the first silencer 41 is arranged in the cavity, the first silencer 41 connects the first sub-cavity 51 and the third sub-cavity 53 and passes through the second sub-cavity 52, and the tube wall of the first silencer 41 located in the second sub-cavity 52 has a plurality of first through holes 71, that is, the portion of the first silencer 41 provided in the first sub-cavity 51 and the third sub-cavity 53 can have an opening, and the portion of the first silencer 41 provided in the second sub-cavity 52 can have a plurality of first through holes 71.

[0036] The air inlet pipe 3 is connected to the third sub-cavity 53, and the airflow can enter the third sub-cavity 53 through the air inlet hole. The third sub-cavity 53 is an expansion cavity. The airflow expands in the third sub-cavity 53. This process can reduce the intermediate frequency noise. The airflow in the third sub-cavity 53 can enter the first silencer 41. The airflow entering the first silencer 41 can be divided into a first part of the airflow and a second part of the airflow. The first part of the airflow can enter the first sub-cavity 51 through the first silencer 41. The airflow in the first sub-cavity 51 can then pass through the first outlet pipe 61 and flow out of the housing 1 from the outlet of the first outlet pipe 61. The length of the first outlet pipe 61 can be set to be more than 1.2m. The length of the first outlet pipe 61 can be but not limited to 1.2m, 1.3m, 1.4m, etc. The airflow can achieve the purpose of reducing low-frequency noise through the first outlet pipe 61. The frequency range of the first outlet pipe 61 to reduce the airflow can be 40Hz to 200Hz.

[0037] The tube wall of the first silencer tube 41 located in the second sub-cavity 52 has a plurality of first through holes 71, and the second part of the airflow can enter the second sub-cavity 52 through the plurality of first through holes 71. As some embodiments of the present application, a silencer material 80 can be provided in the second sub-cavity 52. ​​The silencer material 80 can be polyurethane foam or sponge. The second part of the airflow rubs against the silencer material 80 to convert sound energy into heat energy, thereby achieving the purpose of reducing the intermediate frequency noise.

[0038] It should be noted that the airflow first enters the first sub-cavity 51 through the first muffler pipe 41, and then flows out of the housing 1 through the first outlet pipe 61. That is to say, the propagation directions of the airflows flowing through the first muffler pipe 41 and the first outlet pipe 61 are opposite. This arrangement can increase the length of the first outlet pipe 61 while shortening the housing 1 in the first direction (i.e. Figure 1 The length in the X direction (as shown) is reduced to achieve the purpose of lightweight design, and it is beneficial to reduce the volume of the shell 1 and improve space utilization.

[0039] In the above embodiment, the airflow flows into the third sub-cavity 53 through the air inlet pipe 34 and expands in the third sub-cavity 53. The airflow in the third sub-cavity 53 can flow into the first silencer 41. Part of the airflow in the first silencer 41 can flow into the second sub-cavity 52 through the first through hole 71, and another part of the airflow can flow into the first sub-cavity 51 and pass through the first outlet pipe 61. This muffler 100 can effectively reduce noise to enhance the user's car experience.

[0040] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the muffler 100 further includes: a second air outlet pipe 62 and a second muffler pipe 42, and the plurality of sub-cavities further include a fourth sub-cavity 54 and a fifth sub-cavity 55, along the first direction (i.e. Figure 1The third sub-cavity 53, the fourth sub-cavity 54 and the fifth sub-cavity 55 are arranged in sequence, the second silencer 42 is arranged in the cavity and connects the fifth sub-cavity 55 and the third sub-cavity 53, a portion of the second air outlet pipe 62 is arranged in the cavity and connects the fifth sub-cavity 55 and the outside of the muffler 100, and the wall of the second silencer 42 located in the fourth sub-cavity 54 has a plurality of second through holes 72.

[0041] Among them, along the first direction (i.e. Figure 1 The first sub-cavity 51, the second sub-cavity 52, the third sub-cavity 53, the fourth sub-cavity 54 and the fifth sub-cavity 55 are arranged in sequence, the second silencer 42 can be constructed as a tubular structure with openings at both ends, the second silencer 42 is arranged in the cavity, the second silencer 42 connects the third sub-cavity 53 and the fifth sub-cavity 55 and passes through the fourth sub-cavity 54, and the tube wall of the second silencer 42 located in the fourth sub-cavity 54 has a plurality of second through holes 72, that is, the portion of the second silencer 42 arranged in the third sub-cavity 53 and the fifth sub-cavity 55 can have an opening, and the tube wall of the portion of the second silencer 42 arranged in the fourth sub-cavity 54 can have a plurality of second through holes 72.

[0042] The air inlet pipe 3 is connected to the third sub-cavity 53, and the airflow can enter the third sub-cavity 53 through the air inlet hole. The third sub-cavity 53 is an expansion cavity. The airflow expands in the third sub-cavity 53. This process can reduce the intermediate frequency noise. Afterwards, the airflow in the third sub-cavity 53 enters the second silencer 42. The airflow entering the second silencer 42 can be divided into a third part of the airflow and a fourth part of the airflow. The third part of the airflow can pass through the second silencer 42 to enter the fifth sub-cavity 55. The airflow in the fifth sub-cavity 55 can then pass through the second air outlet pipe 62 and flow out of the shell 1 from the outlet of the second air outlet pipe 62. The length of the second air outlet pipe 62 can be set to be more than 1.2m. The length of the second air outlet pipe 62 can be but not limited to 1.2m, 1.3m, 1.4m, etc. The airflow passing through the second air outlet pipe 62 can achieve the purpose of reducing low-frequency noise. The frequency range of the second air outlet pipe 62 to reduce the airflow can be 40Hz to 200Hz.

[0043] The tube wall of the second silencer tube 42 located in the fourth sub-cavity 54 has a plurality of second through holes 72, and the fourth part of the airflow can enter the fourth sub-cavity 54 through the plurality of second through holes 72. As some embodiments of the present application, a silencer material 80 can be provided in the fourth sub-cavity 54. The silencer material 80 can be polyurethane foam or sponge. The fourth part of the airflow rubs against the silencer material 80 to convert sound energy into heat energy, thereby achieving the purpose of reducing the intermediate frequency noise.

[0044] It should be noted that the airflow first enters the fifth sub-cavity 55 through the second muffler pipe 42, and then flows out of the housing 1 through the second outlet pipe 62. That is to say, the propagation directions of the airflow flowing through the second muffler pipe 42 and the second outlet pipe 62 are opposite. This arrangement can increase the length of the second outlet pipe 62 while shortening the housing 1 in the first direction (i.e. Figure 1 The length in the X direction (as shown) is reduced to achieve the purpose of lightweight design, and it is beneficial to reduce the volume of the shell 1 and improve space utilization.

[0045] In the above embodiment, the air inlet pipe 3, the first air outlet pipe 61 and the second air outlet pipe 62 form a single-inlet and double-outlet structure. Compared with the single-inlet and single-outlet structure, the single-inlet and double-outlet structure of the embodiment of the utility model has better overall noise reduction effect and better fuel economy while ensuring the vehicle's dynamic performance.

[0046] As some embodiments of the present application, the air inlet pipe 3, the first air outlet pipe 61 and the second air outlet pipe 62 form a single-inlet and double-outlet structure, which can reduce the airflow noise by 3 decibels and the exhaust back pressure by 5 kPa compared with the single-inlet and single-outlet structure.

[0047] In some embodiments of the present invention, Figure 1 As shown, the plurality of partition plates include: a first partition plate 21, a second partition plate 22, a third partition plate 23, and a fourth partition plate 24, which are arranged along a first direction (i.e. Figure 1 In the X direction shown in the figure, the first partition plate 21, the second partition plate 22, the third partition plate 23, and the fourth partition plate 24 are arranged in sequence to divide the cavity into a first sub-cavity 51, a second sub-cavity 52, a third sub-cavity 53, a fourth sub-cavity 54, and a fifth sub-cavity 55.

[0048] The first partition plate 21, the second partition plate 22, the third partition plate 23, and the fourth partition plate 24 are arranged along the first direction (i.e. Figure 1 The first sub-cavity 51, the second sub-cavity 52, the third sub-cavity 53, the fourth sub-cavity 54, and the fifth sub-cavity 55 are arranged in sequence to divide the cavity into the first sub-cavity 51, the second sub-cavity 52, the third sub-cavity 53, the fourth sub-cavity 54, and the fifth sub-cavity 55. The volumes of the first sub-cavity 51, the second sub-cavity 52, the third sub-cavity 53, the fourth sub-cavity 54, and the fifth sub-cavity 55 can be set according to actual needs, as long as the multiple sub-cavities of the muffler 100 can meet the requirements of reducing noise. The second sub-cavity 52 and the fourth sub-cavity 54 can be provided with a sound-absorbing material 80, which can be a polyurethane foam or a sponge. The airflow rubs against the sound-absorbing material 80 in the second sub-cavity 52 and the fourth sub-cavity 54 to convert the sound energy into heat energy, thereby achieving the purpose of reducing the airflow.

[0049] As some embodiments of the present application, Figure 1As shown, a support plate 25 can be provided in the third sub-cavity 53. The support plate 25 can be welded to the second partition plate 22 and the third partition plate 23. The support plate 25 can strengthen the connection strength of the second partition plate 22 and the third partition plate 23 to reduce the probability of radiation noise caused by loose fixation of the second partition plate 22 and the third partition plate 23.

[0050] In the above embodiment, the first partition plate 21, the second partition plate 22, the third partition plate 23, and the fourth partition plate 24 are arranged along the first direction (i.e. Figure 1 The third sub-cavity 53 can be used as an expansion cavity to reduce intermediate frequency noise. The second sub-cavity 52 and the fourth sub-cavity 54 can reduce high frequency noise through the action of the sound-absorbing material 80. The support plate 25 is provided in the third sub-cavity 53 to reduce radiation noise. Overall, the airflow noise can be reduced to a greater extent, thereby improving the user's vehicle experience.

[0051] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first air outlet pipe 61 is sequentially disposed through the first partition plate 21 , the second partition plate 22 , the third partition plate 23 , the fourth partition plate 24 , and the housing 1 .

[0052] Among them, through holes may be provided on the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24 and the shell 1, and the first air outlet pipe 61 is suitable for being assembled with the through holes on the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24 and the shell 1 and is passed through the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24 and the shell 1. As some embodiments of the present application, the first air outlet pipe 61 may be assembled with the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24 and the shell 1 respectively by interference fit. As some embodiments of the present application, the first air outlet pipe 61 may be assembled with the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24 and the shell 1 respectively by welding. As some embodiments of the present application, the first air outlet pipe 61 can be assembled with the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24 and the shell 1 respectively by interference fit and welding.

[0053] In the above embodiment, the first air outlet pipe 61 is sequentially arranged through the first partition plate 21, the second partition plate 22, the third partition plate 23, the fourth partition plate 24, and the housing 1. This arrangement can increase the length of the first air outlet pipe 61, thereby achieving the purpose of reducing low-frequency noise. Moreover, on the basis of ensuring the length of the first air outlet pipe 61, this arrangement can reduce the length of the housing 1 in the first direction (i.e. Figure 1 The dimensions in the X direction (as shown) are reduced to achieve lightweight design.

[0054] In some embodiments of the present invention, Figure 1 As shown, the tube wall of the first air outlet pipe 61 located in the second sub-cavity 52 has a plurality of third through holes 73 .

[0055] Among them, the tube wall of the first air outlet pipe 61 located in the second sub-cavity 52 has multiple third through holes 73, and the airflow can enter the second sub-cavity 52 through the third through holes 73. A sound-absorbing material 80 can be arranged in the second sub-cavity 52. ​​The sound-absorbing material 80 can be polyurethane foam or sponge. The second part of the airflow rubs against the sound-absorbing material 80 to convert sound energy into heat energy, thereby achieving the purpose of reducing noise.

[0056] In addition, in some specific embodiments, when the temperature of the air flow exceeds 100°C, a resonance frequency of more than 160 Hz will be excited on the first air outlet pipe 61. By constructing a plurality of third through holes 73 on the first air outlet pipe 61, the influence of the standing waves generated at the first air outlet pipe 61 can be reduced, thereby better reducing the airflow.

[0057] In some embodiments of the present invention, Figure 1 As shown, the muffler 100 also includes a third muffler pipe 43, which is arranged in the fifth sub-chamber 55. The third muffler pipe 43 is sleeved on the outside of the first air outlet pipe 61 to define a first muffler chamber together with the first air outlet pipe 61. The pipe wall of the first air outlet pipe 61 has a plurality of fourth through holes connected to the first muffler chamber, and the pipe wall of the third muffler pipe 43 has a plurality of fifth through holes 75.

[0058] Among them, the third silencer pipe 43 is arranged in the fifth sub-cavity 55, and the third silencer pipe 43 can be sleeved on the outside of the first air outlet pipe 61. The third silencer pipe 43 and the first air outlet pipe 61 jointly define a first silencer cavity. A silencer material 80 can be arranged in the first silencer cavity. The silencer material 80 can be polyurethane foam or sponge. The tube wall of the first air outlet pipe 61 has a plurality of fourth through holes connected to the first silencer cavity. The airflow can enter the first silencer cavity through the fourth through holes. The airflow rubs against the silencer material 80 in the first silencer cavity to convert sound energy into heat energy, thereby reducing high-frequency noise. The tube wall of the third silencer pipe 43 has a plurality of fifth through holes 75. The airflow can enter the fifth sub-cavity 55 through the fifth through holes 75, thereby reducing intermediate-frequency noise.

[0059] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second air outlet pipe 62 is sequentially disposed through the fourth partition plate 24 , the third partition plate 23 , the second partition plate 22 , the first partition plate 21 , and the housing 1 .

[0060] Among them, the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21 and the shell 1 may be provided with through holes, and the second air outlet pipe 62 is suitable for being assembled with the through holes on the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21 and the shell 1 and is penetrated by the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21 and the shell 1. As some embodiments of the present application, the second air outlet pipe 62 can be respectively assembled with the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21 and the shell 1 by interference fit. As some embodiments of the present application, the second air outlet pipe 62 can be respectively assembled with the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21 and the shell 1 by welding. As some embodiments of the present application, the second air outlet pipe 62 can be assembled with the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21 and the shell 1 respectively by interference fit and welding.

[0061] In the above embodiment, the second air outlet pipe 62 is sequentially arranged through the fourth partition plate 24, the third partition plate 23, the second partition plate 22, the first partition plate 21, and the housing 1. This arrangement can increase the length of the second air outlet pipe 62, thereby achieving the purpose of reducing low-frequency noise. Moreover, on the basis of ensuring the length of the first air outlet pipe 61, this arrangement can reduce the length of the housing 1 in the first direction (i.e. Figure 1 The dimensions in the X direction (as shown) are reduced to achieve lightweight design.

[0062] In some embodiments of the present invention, Figure 1 As shown, the wall of the second air outlet pipe 62 located in the fourth sub-cavity 54 has a plurality of sixth through holes 76 .

[0063] Among them, the tube wall of the second air outlet pipe 62 located in the fourth sub-cavity 54 has multiple sixth through holes 76, and the airflow can enter the fourth sub-cavity 54 through the sixth through holes 76. A sound-absorbing material 80 can be arranged in the fourth sub-cavity 54. The sound-absorbing material 80 can be polyurethane foam or sponge. The airflow rubs against the sound-absorbing material 80 to convert sound energy into heat energy, thereby achieving the purpose of reducing noise.

[0064] In addition, in some specific embodiments, when the temperature of the air flow exceeds 100° C., a resonance frequency of more than 160 Hz will be excited on the second air outlet pipe 62. By constructing a plurality of sixth through holes 76 on the second air outlet pipe 62, the influence of the standing waves generated at the second air outlet pipe 62 can be reduced, thereby better reducing the airflow.

[0065] In some embodiments of the present invention, Figure 1 As shown, the muffler 100 also includes: a fourth muffler pipe 44, the fourth muffler pipe 44 is arranged in the first sub-chamber 51, the fourth muffler pipe 44 is sleeved on the outside of the second air outlet pipe 62 to define a second muffler chamber together with the second air outlet pipe 62, the tube wall of the second air outlet pipe 62 has a plurality of seventh through holes connected to the second muffler chamber; the tube wall of the fourth muffler pipe 44 has a plurality of eighth through holes 78.

[0066] Among them, the fourth silencer pipe 44 is arranged in the first sub-cavity 51, and the fourth silencer pipe 44 can be sleeved on the outside of the second air outlet pipe 62. The fourth silencer pipe 44 and the second air outlet pipe 62 jointly define a second silencer cavity. A silencer material 80 can be arranged in the second silencer cavity. The silencer material 80 can be polyurethane foam or sponge. The tube wall of the second air outlet pipe 62 has a plurality of seventh through holes connected to the second silencer cavity. The airflow can enter the second silencer cavity through the seventh through holes. The airflow rubs against the silencer material 80 in the second silencer cavity to convert sound energy into heat energy, thereby reducing high-frequency noise. The airflow can enter the first sub-cavity 51 through the eighth through hole 78, thereby reducing medium-frequency noise.

[0067] It should be noted that, as a specific embodiment of the present application, the first air outlet pipe 61 and the second air outlet pipe 62 are constructed as long pipes, and the first air outlet pipe 61 and the second air outlet pipe 62 are used to reduce low-frequency noise. The frequency range of the airflow reduced by the first air outlet pipe 61 and the second air outlet pipe 62 can be 40 Hz to 200 Hz; the first silencer pipe 41, the first air outlet pipe 61, the second air outlet pipe 62, the first partition plate 21 and the second partition plate 22 jointly define the first three-tube labyrinth silencer cavity, the second silencer pipe 42, the first The outlet pipe 61, the second outlet pipe 62, the third partition plate 23 and the fourth partition plate 24 jointly define a second three-tube labyrinth silencer chamber. The first three-tube labyrinth silencer chamber and the second three-tube labyrinth silencer chamber may be provided with a silencer material 80. The silencer material 80 may be a polyurethane foam or a sponge. The first three-tube labyrinth silencer chamber and the second three-tube labyrinth silencer chamber are used to reduce intermediate frequency noise. The frequency range of the first three-tube labyrinth silencer chamber and the second three-tube labyrinth silencer chamber in reducing the airflow may be 100Hz to 500Hz.

[0068] According to the vehicle of the embodiment of the utility model, including the muffler 100 of the vehicle of the above-mentioned embodiment, the airflow flows into the third sub-cavity 53 through the air intake pipe 34 and expands in the third sub-cavity 53, the airflow in the third sub-cavity 53 can flow into the first muffler 41, part of the airflow in the first muffler 41 can flow into the second sub-cavity 52 through the first through hole 71, and another part of the airflow can flow into the first sub-cavity 51 and pass through the first outlet pipe 61. This muffler 100 can effectively reduce noise to enhance the user's vehicle experience.

[0069] In the description of the present invention, it is necessary to understand that the terms "length", "upper", "lower", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0070] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0071] In the description of the present invention, "plurality" means two or more.

[0072] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0073] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A muffler (10) for a vehicle, characterized in that: include: A housing (1), wherein the housing (1) defines a cavity; A plurality of partition plates, each of which is disposed in the cavity and arranged at intervals along a first direction to divide the cavity into a plurality of sub-cavities; An air inlet pipe (3), a first air outlet pipe (61) and a first silencer pipe (41); the plurality of sub-cavities include a first sub-cavity (51), a second sub-cavity (52) and a third sub-cavity (53) arranged in sequence along the first direction; the air inlet pipe (3) is connected to the third sub-cavity (53); the first silencer pipe (41) is arranged in the cavity and connects the first sub-cavity (51) and the third sub-cavity (53); a portion of the first air outlet pipe (61) is arranged in the cavity and connects the first sub-cavity (51) and the outside of the silencer (10); and the wall of the first silencer pipe (41) located in the second sub-cavity (52) has a plurality of first through holes (71).

2. The muffler (10) for a vehicle according to claim 1, characterized in that: The invention also comprises: a second air outlet pipe (62) and a second silencer pipe (42); the plurality of sub-cavities further comprise a fourth sub-cavity (54) and a fifth sub-cavity (55); along the first direction, the third sub-cavity (53), the fourth sub-cavity (54) and the fifth sub-cavity (55) are arranged in sequence; the second silencer pipe (42) is arranged in the cavity and communicates with the fifth sub-cavity (55) and the third sub-cavity (53); a portion of the second air outlet pipe (62) is arranged in the cavity and communicates with the fifth sub-cavity (55) and the outside of the silencer (10); and the wall of the second silencer pipe (42) located in the fourth sub-cavity (54) has a plurality of second through holes (72).

3. The muffler (10) for a vehicle according to claim 2, characterized in that: The plurality of partition plates include: a first partition plate (21), a second partition plate (22), a third partition plate (23), and a fourth partition plate (24); along the first direction, the first partition plate (21), the second partition plate (22), the third partition plate (23), and the fourth partition plate (24) are arranged in sequence to divide the cavity into the first sub-cavity (51), the second sub-cavity (52), the third sub-cavity (53), the fourth sub-cavity (54), and the fifth sub-cavity (55).

4. The muffler (10) for a vehicle according to claim 3, characterized in that: The first air outlet pipe (61) is sequentially arranged through the first partition plate (21), the second partition plate (22), the third partition plate (23), the fourth partition plate (24), and the housing (1).

5. The vehicle muffler (10) according to claim 4, characterized in that: The tube wall of the first air outlet pipe (61) located in the second sub-cavity (52) has a plurality of third through holes (73).

6. The muffler (10) for a vehicle according to claim 4, characterized in that: Also includes: A third silencer pipe (43), the third silencer pipe (43) being arranged in the fifth sub-cavity (55), the third silencer pipe (43) being sleeved on the outside of the first air outlet pipe (61) to define a first silencer cavity together with the first air outlet pipe (61), the tube wall of the first air outlet pipe (61) having a plurality of fourth through holes communicating with the first silencer cavity; the tube wall of the third silencer pipe (43) having a plurality of fifth through holes (75).

7. The muffler (10) for a vehicle according to claim 3, characterized in that: The second air outlet pipe (62) is sequentially arranged through the fourth partition plate (24), the third partition plate (23), the second partition plate (22), the first partition plate (21), and the housing (1).

8. The muffler (10) for a vehicle according to claim 6, characterized in that: The tube wall of the second air outlet pipe (62) located in the fourth sub-cavity (54) has a plurality of sixth through holes (76).

9. The muffler (10) for a vehicle according to claim 6, characterized in that: Also includes: A fourth silencer pipe (44), the fourth silencer pipe (44) is arranged in the first sub-cavity (51), the fourth silencer pipe (44) is sleeved on the outside of the second air outlet pipe (62) to define a second silencer cavity together with the second air outlet pipe (62), the tube wall of the second air outlet pipe (62) has a plurality of seventh through holes connected to the second silencer cavity; the tube wall of the fourth silencer pipe (44) has a plurality of eighth through holes (78).

10. A vehicle, characterized in that: A muffler (10) for a vehicle comprising the method according to any one of claims 1 to 9.

Images