CN205225381U - Silencer of irregular shell - Google Patents

Abstract

The utility model discloses a muffler with an irregular casing, which comprises a casing, a first partition, a second partition, an air inlet pipe, an intermediate pipe and an air outlet pipe, wherein the casing surrounds a muffler chamber, the first partition and the second partition The second partition divides the sound-absorbing cavity into the first chamber, the second chamber and the third chamber. The shell is provided with depressions at the first partition and the second partition. The second chamber is filled with sound-absorbing cotton. The cross section of the body is a special-shaped structure; the air inlet pipe extends from the air inlet to the third chamber, the air outlet pipe extends from the air outlet to the first chamber, the middle pipe extends from the first chamber to the third chamber, and the outer wall of the housing Several parallel groove structures are provided, and air holes are provided on the first partition and the second partition. The utility model can save more vehicle body space through the irregular special-shaped structure, the concave structure and the groove structure of the casing, and can better absorb airflow energy and provide better noise reduction effect.

Description

A muffler with an irregular casing

technical field

The utility model relates to the field of automobile engine mufflers, in particular to a muffler with an irregular casing.

Background technique

The muffler is a device that prevents sound transmission and allows airflow to pass through, and is an important measure to eliminate aerodynamic noise. When the exhaust gas is discharged from the automobile engine, the pressure of the exhaust gas changes rapidly at the outlet of the exhaust pipe, which generates vibration, and the vibration generates noise. Therefore, the current main method of noise reduction is to install a muffler in the exhaust pipe of the automobile engine. The muffler is used to consume airflow energy and reduce the pressure fluctuation range of the airflow, which can reduce noise. Now, as the requirements of emission regulations become more and more stringent, the arrangement and use of automobile mufflers put forward higher requirements, and customers have higher and higher requirements for the controllability and comfort of the whole vehicle, which in turn requires all aspects of automobile mufflers Performance requirements are also becoming more and more stringent, such as noise control. As the main component of the car, the muffler plays a key role in the noise control of the car. Therefore, the design of the car muffler needs to be based on a reasonable structure to meet the smooth exhaust and facilitate installation and layout. However, the shells of the existing automobile mufflers are all in the shape of regulations, which need to occupy a large body space, and their smooth surfaces are not easy to fix, and the noise control effect is also very limited.

Utility model content

Aiming at the above-mentioned problems in the prior art, the utility model proposes a muffler with an irregular casing.

The technical solution of the utility model is: a muffler with an irregular shell, including a shell, a first baffle, a second baffle, an air intake pipe, an intermediate pipe and an air outlet pipe, wherein the shell surrounds and forms a muffler chamber, so The first partition and the second partition are arranged in the muffler chamber and divide the muffler chamber into a first chamber, a second chamber and a third chamber, and the first partition is provided with a number of first ventilation holes , the second partition is provided with a number of second ventilation holes, the housing is provided with depressions at the first partition and the second partition and cooperates with the first partition and the second partition, the The second chamber is filled with sound-absorbing cotton, and the cross-section of the housing is a special-shaped structure. The convex arc segment, the second vertical line segment, the second concave arc segment and the third vertical line segment are successively connected and surrounded, wherein the length of the first horizontal line segment is three times the length of the second horizontal line segment, and the first horizontal line segment is three times the length of the second horizontal line segment. the length of one longitudinal segment is greater than the sum of the lengths of the second and third longitudinal segments;

The housing of the first chamber is provided with an air inlet, and the housing of the third chamber is provided with an air outlet, and the air inlet pipe extends from the air inlet into the third chamber and passes through the first chamber in turn. chamber, a first partition, a second chamber and a second partition, and the outlet pipe extends from the gas outlet to the first chamber and passes through the third chamber, the second partition, the second chamber and the second chamber in turn. A partition, the intermediate pipe extends from the first chamber to the third chamber and passes through the first partition, the second chamber and the second partition in sequence.

Further, the housing is composed of a first housing and a second housing, and the joining line of the first housing and the second housing is located in the same plane.

Further, the air inlet pipe, the intermediate pipe and the air outlet pipe are parallel to each other and perpendicular to the first partition and the second partition.

Further, the outer wall of the casing is provided with several grooves parallel to the intake pipe.

Compared with the prior art, the beneficial effects of the utility model are:

①Through the irregular shaped structure and groove structure of the shell, on the one hand, the overall structural layout of the utility model is more suitable for the shape of the vehicle body, especially for vehicles with limited floor space, which can save more body space; on the other hand, it can make the internal air flow Generate turbulent flow, further reduce the flow velocity of airflow, and provide better noise reduction effect; on the other hand, the groove structure can provide good deformation resistance for the shell;

②Through the recessed structure at the partition of the housing, on the one hand, it can make the airflow generate swirl when passing through the partition, reduce the energy of the airflow, thereby improving the noise reduction effect, and on the other hand, the housing can be fixed more conveniently live.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the utility model.

Fig. 2 is a sectional view along A-A of Fig. 1 .

Fig. 3 is a B-B sectional view of Fig. 1 .

detailed description

Below in conjunction with accompanying drawing and embodiment the technical solution in the utility model is further described.

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model includes a housing 1, a first partition 2, a second partition 3, an air inlet pipe 4, an intermediate pipe 5 and an air outlet pipe 6, wherein the housing 1 Composed of the first shell 11 and the second shell 12, and the joint line 13 of the first shell 11 and the second shell 12 is located in the same plane, the first shell 11 and the second shell Body 12 surrounds and forms muffler cavity 7, and the outer wall of described housing 1 is provided with several parallel grooves 14, and described first partition plate 2 and second divider plate 3 are arranged in muffler cavity 7 and divide muffler cavity 7 into The first chamber 71, the second chamber 72 and the third chamber 73, the first partition 2 is provided with a number of first ventilation holes 21, and the second partition 3 is provided with a number of second ventilation holes 31, the housing 1 is provided with a recess 15 at the first partition 2 and the second partition 3 and is matched with the first partition 2 and the second partition 3, and the second chamber 72 is filled with Sound-absorbing cotton 8, the cross-section of the housing 1 is a special-shaped structure, and the special-shaped structure is composed of a first horizontal line segment 101, a first vertical line segment 102, a second horizontal line segment 103, a first concave arc-shaped segment 104, a first The convex arc segment 105, the second longitudinal segment 106, the second concave arc segment 107 and the third longitudinal segment 108 are successively connected and surrounded, wherein the length of the first horizontal segment 101 is 1/2 of the length of the second horizontal segment 103. Three times, the length of the first longitudinal line segment 102 is greater than the sum of the lengths of the second longitudinal line segment 106 and the third longitudinal line segment 108;

The housing 1 of the first chamber 71 is provided with an air inlet 16, the housing 1 of the third chamber 73 is provided with an air outlet 17, the air inlet pipe 4, the middle pipe 5, the air outlet pipe 6 and the concave The grooves 14 are parallel to each other and perpendicular to the first partition 2 and the second partition 3. The air inlet pipe 4 extends from the air inlet 16 into the third chamber 73 and passes through the first chamber 71, the first The partition 2, the second chamber 72 and the second partition 3, the outlet pipe 6 extends from the air outlet 17 to the first chamber 71 and passes through the third chamber 73, the second partition 3, the second The chamber 72 and the first partition 2 , the intermediate pipe 5 extends from the first chamber 71 to the third chamber 73 and passes through the first partition 2 , the second chamber 72 and the second partition 3 in sequence.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (4)

1. a silencing apparatus for irregular shell, is characterized in that: comprise housing, first dividing plate, second partition, suction tude, intervalve and steam outlet pipe, wherein said housing surrounds and forms silencing cavity, and described first dividing plate and second partition to be located in silencing cavity and silencing cavity is divided into the first chamber, second chamber and the 3rd chamber, described first dividing plate is provided with some first air holes, described second partition is provided with some second air holes, described housing is provided with depression at the first dividing plate and second partition place and matches with the first dividing plate and second partition, silencing cotton is filled with in described second chamber, the cross section of described housing is polymorphic structure, and described polymorphic structure is by the first horizontal line section, first ordinate section, second horizontal line section, first indent arcuate segment, first evagination arcuate segment, second ordinate section, the encirclement that is connected successively of second indent arcuate segment and the 3rd ordinate section forms, and wherein the length of the first horizontal line section is three times of the length of the second horizontal line section, and the length of described first ordinate section is greater than the length sum of the second ordinate section and the 3rd ordinate section,

The housing of described first chamber is provided with suction port, the housing of the 3rd chamber is provided with air outlet, described suction tude extends in the 3rd chamber also successively through the first chamber, the first dividing plate, the second chamber and second partition from suction port, described steam outlet pipe extends to the first chamber from air outlet and successively through the 3rd chamber, second partition, the second chamber and the first dividing plate, described intervalve extends to the 3rd chamber from the first chamber and passes the first dividing plate, the second chamber and second partition successively.

2. the silencing apparatus of a kind of irregular shell as claimed in claim 1, it is characterized in that: described housing is formed by the first housing and the second shell combination, and the joint line of described first housing and the second housing is positioned at same plane.

3. the silencing apparatus of a kind of irregular shell as claimed in claim 1, is characterized in that: described suction tude, intervalve and steam outlet pipe are parallel to each other, and vertical with second partition with the first dividing plate.

4. the silencing apparatus of a kind of irregular shell as claimed in claim 3, is characterized in that: the outer wall of described housing is provided with some grooves being parallel to suction tude.