Noise silencer
阅读说明:本技术 *** (Noise silencer ) 是由 H·费伦特 于 2019-06-25 设计创作,主要内容包括:本发明涉及一种用于内燃机的排气设备的消声器,该消声器包括消声器壳体,该消声器壳体具有沿壳体纵轴线的方向伸展的壳体罩,并且所述消声器在壳体罩的两个轴向端部区域上分别具有一个与所述壳体罩连接的外底部,所述壳体罩与所述外底部界定消声器内室,并且在消声器内室中设置有至少一个划分消声器内室的内底部,所述消声器还包括消声单元,该消声单元具有引导排气的内管、包围该内管的外管和设置在所述内管与所述外管之间的消声材料,所述内管容纳在所述一个内底部的开口中和所述外底部中的所述一个外底部的或另一个内底部的开口中,并且所述外管与所述一个内底部固定地连接或/和与所述外底部中的所述一个外底部或所述另一个内底部固定地连接。(The invention relates to a muffler for an exhaust system of an internal combustion engine, comprising a muffler housing which has a housing shell extending in the direction of a housing longitudinal axis and which has an outer bottom connected to the housing shell in each case at both axial end regions of the housing shell, which housing shell delimits a muffler interior with the outer bottom and in which at least one inner bottom delimiting the muffler interior is arranged, and comprising a sound-damping unit which has an inner tube which conducts exhaust gas, an outer tube which surrounds the inner tube and a sound-damping material arranged between the inner tube and the outer tube, the inner tube being accommodated in an opening of the inner bottom and in an opening of the outer bottom or of the other inner bottom of the outer bottoms, and the outer tube being fixedly connected to the inner bottom or/and to the outer bottom or the outer bottom of the outer bottoms The other inner bottom portion is fixedly connected.)
1. A muffler, in particular a rear muffler, for an exhaust system of an internal combustion engine, comprising a muffler housing (12) having a housing cover (14) extending in the direction of a housing longitudinal axis (A) and having an outer base (16) connected to the housing cover (14) in each case at both axial end regions of the housing cover (14), wherein the housing cover (14) and the outer base (16) delimit a muffler inner chamber (18) and at least one inner base (20) which delimits the muffler inner chamber (18) is arranged in the muffler inner chamber (18), and comprising a sound-damping unit (24) having an inner tube (26) which conducts exhaust gas, an outer tube (28) which surrounds the inner tube (26), and a sound-damping material (32) which is arranged between the inner tube (26) and the outer tube (28), wherein the inner tube (26) is received in an opening (48) of one inner bottom (20) and in an opening (40) of one or the other of the outer bottoms (16), and the outer tube (28) is fixedly connected with the one inner bottom (20) or/and with the one or the other of the outer bottoms (16).
2. The muffler according to claim 1, characterized in that the outer pipe (28) is connected to the one inner bottom (20) or/and the one or the other of the outer bottoms (16) by welding.
3. The muffler according to claim 1 or 2, characterized in that an axial formation (46, 38) is formed in the one inner bottom (26) or/and in the one or the other of the outer bottoms (16) for accommodating the outer pipe (28).
4. The muffler according to claim 3, characterized in that the opening (48) provided in the one inner bottom (20) is provided in the region of an axial profile (46) formed in the one inner bottom (20), or/and the opening (40) provided in the one or the other inner bottom of the outer bottoms (16) is provided in the region of an axial profile (38) formed in the outer bottom (16) or the other inner bottom, or/and the axial profile (46) formed in the one inner bottom (20) and the axial profile (38) formed in the one or the other inner bottom of the outer bottoms (16) are oriented axially away from one another.
5. The muffler according to claim 4, characterized in that a neck (50) surrounding the inner pipe (26) and oriented in the direction axially away from the axial profile (48) arranged in the inner bottom (20) is arranged on the inner bottom (20) in such a way as to surround the opening (48) formed in the inner bottom (20), and/or a neck (42) surrounding the inner pipe (26) and oriented in the direction axially away from the axial profile (38) arranged in the inner bottom (16) is arranged on the outer bottom (16) or the inner bottom in such a way as to surround the opening (40) formed in the inner bottom (16) or the inner bottom.
6. The muffler according to claim 5, characterized in that the inner pipe (26) is fixedly connected, preferably by welding, to the neck (50) arranged on the one inner bottom (20) or/and the inner pipe (26) is fixedly connected, preferably by welding, to the neck (42) arranged on the one or the other of the outer bottoms (16) or/and the neck (50) arranged on the one inner bottom (20) and the neck (42) arranged on the one or the other of the outer bottoms (16) are oriented axially away from each other.
7. The muffler according to any of the preceding claims, characterized in that the outer pipe (28) has a radial spacing from the inner pipe (26) in each of its axial end regions (34, 36) or/and the outer pipe (28) is cylindrically configured.
8. A muffler according to any one of the preceding claims, characterized in that a plurality of openings (35) are provided through the pipe wall (33) of the inner pipe (26) in the longitudinal region of the inner pipe (26) surrounded by the sound-damping material (32).
9. The muffler according to any of the foregoing claims wherein the sound-attenuating material (32) substantially completely fills the intermediate chamber (30) defined between the outer pipe (28) and the inner pipe (26).
10. The muffler according to any of the preceding claims, characterized in that the sound-damping material (32) comprises a fibrous material or/and a foamed material.
11. The muffler of any of the above claims wherein the one inner bottom (20) or/and the one or the other of the outer bottoms (16) is a sheet metal form.
12. Exhaust apparatus comprising a muffler (10) according to any of the preceding claims.
Technical Field
The present invention relates to a muffler which can be provided in a vehicle, for example, as a rear muffler in an exhaust apparatus of an internal combustion engine.
Background
In order to reduce the sound level as much as possible, it is known that: a sound-damping unit, also referred to as a "bomber" (bomden), is used, which comprises an inner tube, which conducts the exhaust gas, an outer tube, which surrounds the inner tube, and a sound-damping material, which is arranged in an intermediate chamber between the inner tube and the outer tube.
Disclosure of Invention
The purpose of the invention is: a muffler, in particular a rear muffler, for an exhaust system of an internal combustion engine is provided, wherein a simple assembly of the different components or assemblies of the muffler is possible.
According to the invention, this object is achieved by a muffler, in particular a rear muffler, for an exhaust gas system of an internal combustion engine, comprising a muffler housing which has a housing shell which extends in the direction of a housing longitudinal axis and which has an outer bottom which is connected to the housing shell in each case at both axial end regions of the housing shell, wherein the housing shell and the outer bottom delimit a muffler interior and at least one inner bottom which delimits the muffler interior is arranged in the muffler interior, and comprising a sound-damping unit which has an inner tube which conducts exhaust gas, an outer tube which surrounds the inner tube, and sound-damping material which is arranged between the inner tube and the outer tube, wherein the inner tube is accommodated in an opening of the inner bottom and in an opening of the outer bottom or of the other inner bottom of the outer bottoms, and the outer tube is fixedly connected with the one inner bottom or the other inner bottom of the one inner bottom or/and the outer bottom. Since in the muffler constructed according to the invention it is achieved that the sound-damping unit is connected via an outer tube to the inner bottom or/and to one of the outer bottoms or at least one of the inner bottoms of the two inner bottoms penetrated by the inner tube, it is not necessary: the direct joining of the outer tube to the inner tube is achieved. This simplifies the construction, since, for example, a sound damping unit having an inner tube, an outer tube and a sound damping material can be produced in a simple manner in that the intermediate chamber formed between the inner tube and the outer tube after positioning thereof is filled with the sound damping material. No other measures for establishing a fixed engagement of the outer tube onto the inner tube are necessary.
The fixed connection of the sound-damping unit can be ensured, for example, by the outer tube being connected to the inner bottom or the outer bottom or the further inner bottom of the outer bottom by welding.
In order to be able to ensure a defined positioning of the outer tube in relation to the inner bottom, on the one hand, or in relation to the outer bottom or the other inner bottom of the outer bottom, on the other hand, in a simple manner, it is proposed that: an axial profile is formed in the inner bottom and/or in the outer bottom or the other inner bottom of the outer bottom, which profile accommodates the outer tube. In this case, for simple accommodation of the sound damping unit, provision is preferably made for: the axial profile formed in the inner bottom and the axial profile formed in the outer bottom or the inner bottom are oriented axially away from one another.
In this case, it can be provided in an advantageous manner that: the openings provided in the inner bottom are provided in the region of the axial profile formed in the inner bottom, and/or the openings provided in the outer bottom or the inner bottom are provided in the axial profile formed in the outer bottom or the inner bottom.
In order to ensure a fixed and defined positioning of the inner tube also in a simple manner, a neck surrounding the inner tube and oriented in the axial direction away from the axial profile arranged in the inner bottom can be provided in the inner bottom in such a way as to surround the opening formed in the inner bottom, and/or a neck surrounding the inner tube and oriented in the axial direction away from the axial profile arranged in the outer bottom or the inner bottom can be provided on the outer bottom or the inner bottom in such a way as to surround the opening formed in the inner bottom. Since the neck is oriented in the direction axially away from the respective profile, i.e. is not positioned in engagement in the interior provided by the profile, and the outer tube and also the sound-damping material can be positioned in engagement in the interior, interference of such necks with one another can be avoided, in particular, by means of the sound-damping material.
The inner tube can be fixedly connected to the neck arranged on the inner bottom, preferably by welding, or/and the inner tube can be fixedly connected to the neck arranged on the outer bottom or the inner bottom, preferably by welding. For a simple construction, provision can furthermore be made for: the neck portion disposed on the one inner bottom portion and the neck portion disposed on the one outer bottom portion or the other inner bottom portion of the outer bottom portion are oriented axially away from each other.
For a simple construction: the outer tube has a radial distance from the inner tube in each axial end region thereof, or/and the outer tube is cylindrically configured.
In order to be able to utilize the sound damping properties of the sound damping material effectively, a plurality of openings can be provided through the wall of the inner tube in the longitudinal region of the inner tube which is surrounded by the sound damping material.
Furthermore, in order to effectively reduce the sound level, it is proposed that: the sound attenuating material substantially completely fills an intermediate chamber formed between the inner tube and the outer tube.
The sound damping material may comprise, for example, a fibrous material or/and a foamed material.
The one inner bottom or the other inner bottom of the one inner bottom or/and the outer bottom can be provided in a simple manner as a sheet metal shaped part by means of the structure to be provided according to the invention.
Furthermore, the invention relates to an exhaust gas system comprising a muffler constructed according to the invention.
Drawings
The invention is explained in detail below with reference to fig. 1, which shows a longitudinal section of a muffler for an exhaust system of an internal combustion engine in a simplified longitudinal section.
Detailed Description
Fig. 1 shows an end region of a muffler, generally designated 10, for an exhaust system of an internal combustion engine in a vehicle. Such a
The
In the example shown, an
The sound-damping unit, generally designated by reference numeral 24, comprises an
The sound attenuation unit 24 may be provided as a preassembled assembly for the
It is recognized that: due to its cylindrical design, the
In the
An
In the central region of the
The fixed holding of the different components or assemblies can be achieved by material locking, i.e. for example by welding. Accordingly, the
The firm retention of the sound-damping unit 24 in the
It is to be noted that: the principle of the invention can also be used when the sound-damping unit 24 is supported or fixed in its two axial end regions or in the two
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