CN210118184U

CN210118184U - A vehicle that is used for silencer of vehicle and has it

Info

Publication number: CN210118184U
Application number: CN201920738159.1U
Authority: CN
Inventors: 许亮; 贺敏; 叶天行; 龙洪生
Original assignee: BAIC Motor Co Ltd
Current assignee: BAIC Motor Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-02-28
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses a vehicle that is used for silencer of vehicle and has it, a silencer for vehicle includes: a muffler shell and an inner core tube. A cavity is formed inside the silencer shell; the inner core pipe is arranged in the cavity, and a flexible joint is arranged in the middle area of the inner core pipe. According to the utility model discloses a silencer for vehicle adopts flexible festival structure at inner core pipe mid portion, uses telescopic elasticity ripple structure to absorb inner core pipe because the metal swelling capacity of higher heat production, has reduced the thermal fatigue stress of silencer, has improved the life of silencer.

Description

A vehicle that is used for silencer of vehicle and has it

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a vehicle that is used for silencer of vehicle and has it.

Background

With the continuous progress of engine technology and the requirements of energy conservation and emission reduction, in recent years, supercharged engines are more and more applied to automobiles, and an exhaust gas turbocharger is the most common supercharger. The turbine of the exhaust gas turbocharger is coaxial with the impeller of the compressor, the exhaust gas blows the turbine to rotate, the impeller of the compressor synchronously rotates, the pressure and the density of gas entering the engine are increased, and the charging efficiency is increased, so that the dynamic property and the economical efficiency of the engine are improved, the exhaust gas turbocharger does not additionally consume the power of the engine, and the exhaust gas turbocharger is widely applied. However, turbocharged engines can result in increased vehicle vibration and increased exhaust temperatures, increasing the risk of thermal fatigue endurance failure of the exhaust system.

The existing structure for reducing the sound of high-speed exhaust airflow is arranged in a silencer, a perforated pipe needs to be penetrated in the middle of a silencing bag, and meanwhile, a sound absorption material (silencing cotton) is wrapped on the perforated pipe, but the silencing cotton has the functions of heat insulation and heat preservation, so that the temperature difference of 200-300 ℃ exists between an inner pipe and an outer pipe, the degrees of thermal expansion of the inner pipe and the outer pipe are different (the temperature of the inner pipe is high, the thermal expansion coefficient is high, the temperature of the outer pipe is low, and the thermal expansion coefficient is low), the thermal stress of the inner core pipe cannot be released, and the phenomenon of. Therefore, there is room for improvement in the above-described technology.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a muffler for a vehicle, which employs a flexible joint structure in the middle of an inner core tube, and uses a telescopic elastic corrugated structure to absorb the metal expansion of the inner core tube due to high heat generation, thereby reducing the thermal fatigue stress of the muffler and prolonging the service life of the muffler.

The utility model also provides a vehicle of having above-mentioned silencer.

According to the utility model discloses a silencer for vehicle includes: a muffler shell and an inner core tube. A cavity is formed inside the silencer shell; the inner core pipe is arranged in the cavity, and a flexible joint is arranged in the middle area of the inner core pipe.

According to an embodiment of the present invention, the flexible joint is constructed in a bellows structure.

According to the utility model discloses a silencer for vehicle of an embodiment, flexible festival with be located the inner core pipe threaded connection or welded fastening of flexible festival both sides.

According to an embodiment of the utility model discloses a silencer for vehicle, flexible festival adopts SUS321 stainless steel material.

According to an embodiment of the present invention, the axial length of the flexible joint is substantially one tenth of the axial length of the muffler housing.

According to the utility model discloses a silencer for vehicle, be provided with a plurality of noise elimination holes on the perisporium of inner core pipe, it is a plurality of noise elimination hole is in be multirow multiseriate and distribute on the perisporium.

According to the utility model discloses a silencer for vehicle still includes for one embodiment: the silencing cotton is arranged in the cavity and coats the inner core pipe.

Optionally, the noise reduction cotton is made of fiber cotton.

According to the utility model discloses a silencer for vehicle, the silencer casing adopts corrosion-resistant material to through wraparound or spinning technology integrated into one piece.

According to the utility model discloses a silencer for vehicle adopts flexible festival structure at inner core pipe mid portion, uses telescopic elasticity ripple structure to absorb inner core pipe because the metal swelling capacity of higher heat production, has reduced the thermal fatigue stress of silencer, has improved the life of silencer.

According to the vehicle of the second aspect of the present invention, the muffler for a vehicle as set forth in any one of the first aspect is provided. The vehicle and the muffler have the same advantages compared with the prior art, and the detailed description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a muffler for a vehicle according to an embodiment of the present invention.

Reference numerals:

100-muffler for vehicle, 1-muffler shell, 2-inner core tube, 21-flexible joint, 22-circumferential wall, 3-muffling hole, 4-muffling cotton.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

A muffler 100 for a vehicle according to an embodiment of the present invention is described below with reference to fig. 1. As shown in fig. 1, a muffler 100 for a vehicle according to an embodiment of the present invention may include: a muffler shell 1 and an inner core tube 2. Specifically, a cavity is formed inside the muffler housing 1; the inner core tube 2 is disposed within the cavity. The cavity is a sealed cavity, so that sound waves generated by the turbocharged engine can be reflected on the muffler shell 1 to consume certain energy, and the exhaust noise of the turbocharged engine is favorably reduced. Further, the central region of the inner core tube 2 may be provided with a flexible joint 21. Specifically, the flexible joint 21 has a certain amount of expansion and contraction deformation, which is beneficial to absorbing the amount of expansion of the heated inner core tube 2, avoiding the problem of cracking of the muffler 100 caused by the high and low temperature alternating load on the inner core tube 2 for a long time, and prolonging the service life of the muffler 100.

According to the utility model discloses a silencer 100 for vehicle adopts flexible festival 21 structure at inner core pipe 2 mid portion, is favorable to absorbing inner core pipe 2 like this because the metal expansion volume of higher heat production, has reduced silencer 100's thermal fatigue stress, has improved silencer 100's life.

According to a muffler 100 for a vehicle according to an embodiment of the present invention, as shown in fig. 1, the flexible joint 21 is configured as a bellows structure. This allows the flexible joint 21 to have a better amount of expansion and contraction deformation. Further, the flexible joint 21 is screwed or welded to the inner core tube 2 located on both sides of the flexible joint 21. For example, in one embodiment, the flexible joint 21 and the core tube 2 on both sides of the flexible joint 21 may be screwed, which facilitates the assembly personnel to use tools to install or replace the flexible joint 21 and the core tube 2 on both sides of the flexible joint 21. Alternatively, in another embodiment, the flexible joint 21 and the core tube 2 on both sides of the flexible joint 21 may be welded, so as to ensure a stronger connection between the flexible joint 21 and the core tube 2 on both sides of the flexible joint 21. Further, the flexible joint 21 may be made of SUS321(UNS S32100) stainless steel. Therefore, the flexible joint 21 has better high temperature resistance and corrosion resistance, so that the inner core pipe 2 has higher strength and better coefficient of expansion with heat and contraction with cold, the problem that the silencer 100 is cracked due to the fact that the inner core pipe 2 is subjected to high-temperature and low-temperature alternating loads for a long time is solved, and the service life of the silencer 100 is prolonged. Further, the axial length of the flexible joint 21 is substantially one tenth of the axial length of the muffler housing 1. For example, in one embodiment, the axial length of the flexible joint 21 may be one tenth of the axial length of the muffler housing 1.

According to the utility model discloses a silencer 100 for vehicle of an embodiment can also include: silencing cotton 4, silencing cotton 4 sets up in the cavity and cladding inner core pipe 2 sets up. Furthermore, the silencing cotton 4 is made of fiber cotton. Alternatively, in one embodiment, the sound-absorbing cotton 4 may be made of glass fiber cotton, and is bonded into a cylindrical shape by adding molding glue. Further, the silencing cotton 4 is a porous medium, so that sound waves and the silencing cotton 4 can be in full friction vibration, the sound energy can be converted into heat energy to be consumed, and the silencing effect of the silencer 100 is further enhanced.

According to the muffler 100 for a vehicle of an embodiment of the present invention, the plurality of muffling holes 3 are provided in the circumferential wall 22 of the inner core tube 2, and the plurality of muffling holes 3 are distributed in a plurality of rows and a plurality of columns in the circumferential wall 22. In the muffler 100, when sound waves or air columns pass through the muffling holes 3, resonance occurs, and adjacent air columns rub against each other, thereby increasing noise. Through the effect of the silencing holes 3, the silencing frequency can be widened, and the defect that the traditional silencer 100 can only eliminate high-frequency noise by using the silencing cotton 4 alone is overcome. In the description of the present invention, "a plurality" means two or more.

According to the muffler 100 for a vehicle of an embodiment of the present invention, the muffler case 1 is made of a corrosion-resistant material and is integrally formed by a wrapping or spinning process. Therefore, the silencer shell 1 is simple in forming process, low in production cost and high in strength. In one specific embodiment, the muffler shell 1 may be made of SUH409L stainless steel, thereby providing the muffler 100 with better high temperature and fatigue resistance and increasing the service life of the muffler 100.

A detailed operation of the muffler 100 for a vehicle according to an embodiment of the present invention is described in detail below with reference to fig. 1: when the high-temperature airflow discharged by the turbocharged engine of the automobile passes through the muffler 100, the muffler shell 1 and the inner core tube 2 can generate a temperature difference of 200-. Through the utility model discloses flexible festival 21 structure on silencer 100 can be fine absorb the deflection that the different expansion ratios produced, has avoided inner core pipe 2 to produce the cracked risk of thermal fatigue stress, and then reduces silencer 100's thermal fatigue stress, improves silencer 100's life.

In conclusion, according to the muffler 100 for a vehicle of the embodiment of the present invention, the flexible joint 21 structure is adopted in the middle of the core pipe 2, and the telescopic elastic corrugated structure is used to absorb the metal expansion amount of the core pipe 2 due to the high heat generation, so as to reduce the thermal fatigue stress of the muffler 100 and prolong the service life of the muffler 100.

The utility model also provides a vehicle, this vehicle include foretell silencer 100 for the vehicle to have advantages such as the thermal fatigue stress of silencer 100 is low, silencer 100's long service life.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A muffler for a vehicle, comprising:

a muffler shell having a cavity formed therein;

the inner core pipe is arranged in the cavity, and a flexible joint is arranged in the middle area of the inner core pipe.

2. The muffler for a vehicle according to claim 1, wherein the flexible joint is configured as a bellows structure.

3. The muffler for a vehicle according to claim 1, wherein the flexible joint is screwed or welded to the core pipe located on both sides of the flexible joint.

4. The muffler for a vehicle according to claim 1, wherein the flexible joint is made of SUS321 stainless steel.

5. The muffler for a vehicle of claim 1, wherein an axial length of the flexible joint is substantially one-tenth of an axial length of the muffler shell.

6. The muffler for a vehicle according to claim 1, wherein a plurality of muffling holes are provided in a circumferential wall of the inner core pipe, and the plurality of muffling holes are arranged in a plurality of rows and a plurality of columns in the circumferential wall.

7. The muffler for a vehicle according to claim 1, further comprising: the silencing cotton is arranged in the cavity and coats the inner core pipe.

8. The muffler for a vehicle of claim 7, wherein the noise reduction cotton is made of a fiber cotton material.

9. The muffler for a vehicle of claim 1, wherein the muffler shell is made of a corrosion-resistant material and is integrally formed through a wrapping or spinning process.

10. A vehicle characterized by comprising a muffler for a vehicle according to any one of claims 1 to 9.