CN204961020U - Automobile silencer - Google Patents

Abstract

The utility model discloses an automobile muffler, which comprises an outer box of the muffler, an intake pipe, a first expansion chamber, a second expansion chamber, a third expansion chamber and an exhaust port; the inner cavity of the outer box of the muffler The first expansion chamber, the second expansion chamber, the third expansion chamber, the resonance cavity and the partition plate are respectively installed. The automobile muffler is equipped with two silencing chambers, which can effectively divide the airflow into two and improve the noise reduction. At the same time, it also reduces the pressure in the muffler, improves the airflow velocity of the muffler, and can ensure that the output power of the engine is fully reflected, which greatly improves the reliability of the muffler, and the airflow splits The left inner cavity of the pipe is equipped with an airflow dispersing block, which can disperse and buffer the airflow when it enters the muffler, improve the muffler's noise reduction effect, and also reduce the air pressure in the muffler inner cavity.

Description

A car muffler

technical field

The utility model relates to the technical field of mufflers, in particular to an automobile muffler.

Background technique

The muffler is a device installed on the airflow channel of the aerodynamic equipment or in the intake and exhaust system to reduce noise. The muffler can block the propagation of sound waves and allow airflow to pass through. If it is too high, the exhaust resistance is large, which reduces the effect of muffler, and the exhaust is easily blocked, which reduces the effective output power of the engine and greatly reduces the reliability of the muffler.

Utility model content

The purpose of this utility model is to provide an automobile muffler to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions: an automobile muffler, comprising a muffler outer box, an intake pipe, a first expansion chamber, a second expansion chamber, a third expansion chamber and an exhaust port; An air intake pipe is installed on the left side of the outer box of the silencer, and an inner pipe is installed in the inner cavity of the air intake pipe, and an air flow channel is arranged in the inner cavity of the inner pipe, and the inner cavity of the outer box of the muffler is respectively installed with The first expansion chamber, the second expansion chamber, the third expansion chamber, the resonance cavity and the partition plate, the inner cavity of the first expansion chamber is equipped with a flow distribution pipe, and the inner wall of the outer box of the muffler is installed with a sound-absorbing Cotton, the right side of the first expansion chamber, the second expansion chamber and the third expansion chamber are all equipped with expansion chamber partitions, the right side of the first expansion chamber is connected to the third expansion chamber through the bottom of the air supply pipe, so The left side of the third expansion chamber is connected to the second expansion chamber through the bottom of the air return pipe, the right side of the second expansion chamber is connected to the resonance cavity through the bottom of the exhaust pipe, and a protective screen is installed on the right side of the resonance cavity , the right side of the outer box of the muffler is equipped with an exhaust port.

Preferably, a connection fixing ring is installed on the right outer wall of the air intake pipe.

Preferably, both the inner tube and the outer wall of the air flow distribution tube are provided with circular holes.

Preferably, an air flow dispersion block is installed in the inner cavity on the left side of the air flow distribution pipe.

Preferably, sound-absorbing layers are installed on the outer wall of the expansion chamber partition and the inner wall of the exhaust port.

Compared with the prior art, the beneficial effect of the utility model is that: the automobile muffler is provided with two muffler cavities, which can effectively divide the airflow into two, thereby improving the muffler effect of the muffler, and at the same time improving the sound quality of the muffler The pressure in the muffler is decompressed, which improves the airflow velocity of the muffler, which can ensure that the output power of the engine is fully reflected, and greatly improves the reliability of the muffler. In addition, a Connect the fixing ring, which can effectively connect the intake pipe and the outer box of the muffler tightly together. The inner pipe and the outer wall of the air flow distribution pipe are equipped with round holes, which can effectively disperse and decelerate the air flow. The air flow distribution pipe The left side of the inner cavity is equipped with an airflow dispersion block, which can disperse and buffer the airflow when it enters the muffler, improve the muffler's noise reduction effect, and also reduce the air pressure in the muffler inner cavity. The outer wall of the expansion chamber partition and The inner wall of the exhaust port is equipped with a sound-absorbing layer to further improve the sound-absorbing effect.

Description of drawings

Figure 1 is a schematic diagram of the front structure of the utility model.

In the figure: 1 muffler outer box, 2 connecting fixed ring, 3 intake pipe, 4 inner pipe, 5 air flow channel, 6 first expansion chamber, 7 second expansion chamber, 8 third expansion chamber, 9 resonance cavity, 10 air flow Dispersion block, 11 air flow distribution pipe, 12 noise-absorbing cotton, 13 partition plate, 14 expansion chamber partition, 15 sound-absorbing layer, 16 air supply pipe, 17 return air pipe, 18 exhaust pipe, 19 protective mesh plate, 20 exhaust mouth.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, the utility model provides a technical solution: an automobile muffler, including a muffler outer box 1, an intake pipe 3, a first expansion chamber 6, a second expansion chamber 7, a third expansion chamber 8, The resonance cavity 9 and the exhaust port 20; the left side of the muffler outer box 1 is equipped with an air intake pipe 3, and the right outer wall of the air intake pipe 3 is equipped with a connection fixing ring 2, so that the air intake pipe 3 can be effectively connected to the outside of the muffler The box body 1 is closely connected together, and the inner cavity of the air intake pipe 3 is equipped with an inner pipe 4, and the outer wall of the inner pipe 4 and the air flow distribution pipe 11 are provided with round holes, which can effectively disperse and decelerate the air flow, and the inner pipe 4 The inner cavity of the muffler is provided with an airflow passage 5, and the inner cavity of the muffler outer box 1 is respectively equipped with a first expansion chamber 6, a second expansion chamber 7, a third expansion chamber 8, a resonance cavity 9 and a partition plate 13, the first The inner cavity of the expansion chamber 6 is equipped with an air flow distribution pipe 11, and the left inner cavity of the air flow distribution pipe 11 is equipped with an air flow dispersion block 10, which can disperse and buffer the air flow when it enters the muffler, and improve the noise reduction effect of the muffler At the same time, the air pressure in the inner cavity of the muffler is also reduced. The inner wall of the outer box 1 of the muffler is installed with a sound-absorbing cotton 12, and the right sides of the first expansion chamber 6, the second expansion chamber 7 and the third expansion chamber 8 are installed with expansion The chamber partition 14, the outer wall of the expansion chamber partition 14 and the inner wall of the exhaust port 20 are all equipped with a sound-absorbing layer 15 to further improve the sound-absorbing effect. Chamber 8, the left side of the third expansion chamber 8 is connected to the second expansion chamber 7 through the bottom of the air return pipe 17, the right side of the second expansion chamber 7 is connected to the resonance cavity 9 through the bottom of the exhaust pipe 18, and the right side of the resonance cavity 9 A protective screen 19 is installed, and an exhaust port 20 is installed on the right side of the muffler outer box body 1. The automobile muffler is provided with two muffler cavities, which can effectively divide the airflow into two and improve the muffler's muffler performance. At the same time, it also reduces the pressure in the muffler, improves the airflow velocity of the muffler, and can ensure that the output power of the engine is fully reflected, which greatly improves the reliability of the muffler. When in use, it will It can be installed on the corresponding position of the car.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A car muffler, comprising muffler outer casing (1), intake pipe (3), first expansion chamber (6), second expansion chamber (7), third expansion chamber (8), resonance cavity (9) and exhaust port (20); it is characterized in that: the left side of the outer casing of the muffler (1) is equipped with an air inlet pipe (3), and the inner cavity of the air inlet pipe (3) is equipped with an inner pipe (4), the inner cavity of the inner pipe (4) is provided with an airflow channel (5), and the inner cavity of the outer box of the muffler (1) is respectively equipped with a first expansion chamber (6) and a second expansion chamber (7), the third expansion chamber (8), the resonance cavity (9) and the partition plate (13), the inner chamber of the first expansion chamber (6) is equipped with an airflow splitter pipe (11), and the muffler The inner wall of the outer box (1) is equipped with sound-absorbing cotton (12), and the right sides of the first expansion chamber (6), the second expansion chamber (7) and the third expansion chamber (8) are all equipped with expansion chambers Partition (14), the right side of the first expansion chamber (6) is connected to the third expansion chamber (8) through the bottom of the air delivery pipe (16), and the left side of the third expansion chamber (8) is through the air return pipe The bottom of (17) is connected to the second expansion chamber (7), and the right side of the second expansion chamber (7) is connected to the resonance cavity (9) through the bottom of the exhaust pipe (18), and the resonance cavity (9) A protective screen (19) is installed on the right side, and an exhaust port (20) is installed on the right side of the muffler outer box (1). 2. An automobile muffler according to claim 1, characterized in that: a connecting and fixing ring (2) is installed on the right outer wall of the air intake pipe (3). 3. An automobile muffler according to claim 1, characterized in that: the outer walls of the inner pipe (4) and the air flow distribution pipe (11) are both provided with round holes. 4. An automobile muffler according to claim 1, characterized in that: an air flow distribution block (10) is installed in the left inner cavity of the air flow distribution pipe (11). 5. The automobile muffler according to claim 1, characterized in that: the outer wall of the expansion chamber partition (14) and the inner wall of the exhaust port (20) are both equipped with a sound-absorbing layer (15).