CN218030330U - A muffler equipped with a valve and a resistance plate - Google Patents

Abstract

The utility model discloses a silencer of valve and resistance piece is equipped with belongs to car silencer technical field, including intake pipe, anterior silencer barrel, connecting pipe, middle part silencer barrel and the tail pipe that communicates in proper order, the inside from the top down of anterior silencer barrel is equipped with anterior silencer intake pipe, anterior silencer middle part pipe and anterior silencer outlet duct in proper order, and the air current flows to anterior silencer intake pipe, anterior silencer middle part pipe, anterior silencer outlet duct and connecting pipe in proper order and muffles at the in-process that the air current flows through the intake pipe, and the surface of tail pipe is opened along its length direction has a plurality of sound outlet just sound outlet department is equipped with the resistance piece. The device can inhibit low-frequency noise by using a passive valve structure under the condition that the volume of the silencer is limited; meanwhile, various silencing holes arranged in the front silencer cylinder effectively solve the backpressure problem of the exhaust system, and the resistance sheet effectively solves the low-rotating-speed booming problem of the exhaust system.

Description

A muffler equipped with a valve and a resistance sheet

technical field

The utility model belongs to the technical field of automobile mufflers, in particular to a muffler equipped with a valve and a resistance sheet.

Background technique

In recent years, with the strong support of the state, new energy vehicles have developed rapidly. Compared with traditional vehicles, new energy vehicles have a more complex power generation system, and some or more systems that provide power, such as engine systems and hydrogen energy systems, etc. This leads to the need to install multiple systems in a limited chassis space, so that the space used by the exhaust muffler system is reduced, and the length of the muffler used by the exhaust muffler system will also be shortened, and the muffler path for the airflow will also be shortened. Shortened, its volume can not meet the needs of the exhaust system muffler.

Utility model content

The purpose of this utility model is to provide a muffler equipped with a valve and a resistance plate to solve the problem of installing multiple systems in the limited chassis space of new energy vehicles, and the utilization space of a single system is much reduced, which leads to the connection of the muffler with the tailpipe The length will be shortened, and the muffler path for air flow will also be shortened, and its volume cannot meet the demand of the exhaust muffler system.

A muffler equipped with a valve and a resistance plate, including an air intake pipe, a front muffler cylinder, a connecting pipe, a middle muffler cylinder and a tailpipe connected in sequence, and the inside of the front muffler cylinder is sequentially arranged from top to bottom. There are a front muffler inlet pipe, a front muffler middle pipe and a front muffler outlet pipe, and the air flows through the inlet pipe to the front muffler inlet pipe, the front muffler middle pipe, the front muffler outlet pipe and the connecting pipe in sequence and The sound is eliminated during the flow of the air flow, and a plurality of sound holes are formed on the surface of the tail pipe along its length direction, and resistance sheets are arranged at the sound holes.

Preferably, the inside of the front muffler cylinder is fixedly connected with the first partition and the second partition in sequence from the air intake pipe to the connecting pipe, and the front muffler cylinder is connected by the first partition and the second partition. The internal space of the front muffler is sequentially divided into a first chamber, a second chamber and a third chamber, and the inlet pipe of the front muffler, the middle pipe of the front muffler and the outlet pipe of the front muffler all pass through the first partition And the second partition, one end of the front muffler air intake pipe communicates with the air intake pipe and the other end communicates with the third chamber, and the two ends of the front muffler middle pipe respectively communicate with the first chamber and the third chamber. The third chamber communicates, one end of the air outlet pipe of the front muffler communicates with the first chamber and a passive valve is provided at the communication place, the other end of the air outlet pipe of the front muffler communicates with the connecting pipe, the front The muffler inlet pipe, the front muffler middle pipe and the front muffler outlet pipe are located on the pipe body in the second chamber. There are muffler holes for the front muffler inlet pipe, middle muffler pipe muffler holes and front muffler outlet pipe respectively. The sound-absorbing hole, the inside of the second chamber is filled with sound-absorbing cotton.

Preferably, the surfaces of the first partition and the second partition are provided with sound-absorbing holes so that the first chamber, the second chamber and the third chamber are in a communication state.

Preferably, the middle muffler cylinder is connected with a middle muffler muffler pipe, the two ends of the middle muffler muffler pipe are connected with the connecting pipe and the tailpipe respectively, and the surface of the middle muffler muffler pipe is A plurality of muffler holes of the middle muffler pipe are densely arranged along its axial direction, and sound-absorbing cotton is also filled between the outer wall of the middle muffler pipe and the inner wall of the middle muffler cylinder.

Preferably, the resistance sheet includes a resistance sheet frame and a resistance sheet micropore, the resistance sheet frame has an arc-shaped structure and is fixed on the surface of the tail pipe, and the surface of the resistance sheet frame is provided with a plurality of holes communicating with the tail pipe Resistance sheet microporous.

Preferably, the two ends of the front muffler cylinder are fixedly connected with the front muffler end caps, the two ends of the middle muffler cylinder are fixedly connected with the middle muffler end caps, and the surface of the connecting pipe is fixedly connected with the front A hook, the surface of the tail pipe is fixedly connected with a tail pipe hook.

The utility model has the following advantages:

The airflow flows through the inlet pipe to the front muffler inlet pipe, the front muffler middle pipe, the front muffler outlet pipe and the connecting pipe in sequence, and muffles the noise during the flow of the airflow. When the airflow is large, then Push the passive valve in the first chamber to enter the outlet pipe of the front muffler, which prolongs the air flow path, saves time for noise removal, and has a better muffler effect. To suppress low-frequency noise, part of the airflow overflows from the muffler hole of the front muffler inlet pipe, the middle muffler muffler pipe muffler hole, and the front muffler outlet pipe muffler hole into the second chamber, using the muffler cotton in the second chamber It can absorb more energy, and finally all the airflow flows from the muffler hole of the front muffler outlet pipe to the front muffler outlet pipe, and then flows out from the front muffler outlet pipe into the middle muffler cylinder, where the noise is eliminated again. Even better, it finally enters the tailpipe. The resistance sheet on the tailpipe can form a resonant cavity when the airflow passes through the micropores of the resistance sheet, thereby eliminating the standing wave problem caused by the long tailpipe. Under normal circumstances, low-frequency noise can be suppressed by using a passive valve structure; the muffler holes on the first baffle and the second baffle, the muffler holes of the intake pipe of the front muffler, the muffler holes of the muffler pipe of the middle muffler, and the outlet of the front muffler The setting of the muffler hole in the trachea effectively solves the back pressure problem of the exhaust system, and adding a resistance plate to the tailpipe effectively solves the problem of low-speed roar of the exhaust system.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a schematic diagram of the internal structure of the structure shown in FIG. 1 .

Fig. 3 is a structural schematic diagram of the resistance sheet of the present invention.

The markings in the attached drawings are:

1. Air intake pipe; 2. Front muffler cylinder; 3. Connecting pipe; 4. Front muffler end cover; 5. Middle muffler cylinder; 6. Middle muffler end cover; 7. Tail pipe; 8. Resistance plate; 9. Tail pipe hook; 10. Front hook; 11. Front muffler intake pipe; 12. Front muffler intake pipe muffler hole; 13. First clapboard; 14. Second clapboard; 15. Front Part muffler outlet pipe; 16. Front muffler outlet pipe muffler hole; 17. Passive valve; 18. Middle muffler muffler pipe; 19. Middle muffler muffler pipe muffler hole; 20. Front muffler middle pipe muffler hole ; 21, the middle pipe of the front muffler; 22, the third chamber; 23, the first chamber; 24, the second chamber; 25, the resistance sheet frame; 26, the resistance sheet microhole.

detailed description

Next, with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the utility model will be further described in detail, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the utility model concept and technical solutions of the utility model .

As shown in Figure 1-3, a muffler equipped with a valve and a resistance sheet includes an intake pipe 1, a front muffler cylinder 2, a connecting pipe 3, a middle muffler cylinder 5, and a tailpipe 7 connected in sequence. The inside of the front muffler cylinder 2 is provided with a front muffler inlet pipe 11, a front muffler middle pipe 21, and a front muffler outlet pipe 15 sequentially from top to bottom, and the air flows through the inlet pipe 1 to the front muffler inlet pipe in turn 11. The middle pipe 21 of the front muffler, the air outlet pipe 15 of the front muffler and the connecting pipe 3 are used to eliminate noise during the flow of air, and the surface of the tail pipe 7 is provided with a plurality of sound holes along its length And the sound outlet is provided with a resistance sheet 8 .

The inside of the front muffler cylinder 2 is fixedly connected with a first partition 13 and a second partition 14 in sequence from the intake pipe 1 to the connecting pipe 3, and the front partition 13 and the second partition 14 connect the front The internal space of the front muffler cylinder 2 is sequentially divided into a connected first chamber 23, a second chamber 24 and a third chamber 22. The front muffler inlet pipe 11, the front muffler middle pipe 21 and the front muffler The outlet pipes 15 all pass through the first partition 13 and the second partition 14, and one end of the front muffler inlet pipe 11 communicates with the inlet pipe 1 and the other end communicates with the third chamber 22, so The two ends of the middle pipe 21 of the front muffler communicate with the first chamber 23 and the third chamber 22 respectively, and one end of the outlet pipe 15 of the front muffler communicates with the first chamber 23 and a passive valve 17 is provided at the communication place , the other end of the front muffler outlet pipe 15 communicates with the connecting pipe 3, the front muffler inlet pipe 11, the front muffler middle pipe 21 and the front muffler outlet pipe 15 are located in the second chamber 24 The pipe body is respectively provided with the muffler hole 12 of the inlet pipe of the front muffler, the muffler hole 19 of the muffler pipe of the middle muffler and the muffler hole 16 of the outlet pipe of the front muffler, and the inside of the second chamber 24 is filled with sound-absorbing cotton . The surfaces of the first partition 13 and the second partition 14 are provided with sound-absorbing holes so that the first chamber 23 , the second chamber 24 and the third chamber 22 are in a communication state.

The airflow enters the third chamber 22 through the intake pipe 1, and since the middle pipe 21 of the front muffler communicates with the third chamber 22, the airflow discharged into the third chamber 22 will enter the first chamber through the middle pipe 21 of the front muffler. The chamber 23, the surface of the first partition 13 and the second partition 14 are provided with muffler holes so that the first chamber 23, the second chamber 24 and the third chamber 22 are in a communication state, And part of the air flow enters the second chamber 24 through the muffler hole on the second partition 14, and part of the energy is absorbed by the muffler cotton in the second chamber 24, and part of the air flow enters the first muffler along the middle pipe 21 of the front muffler. Chamber 23, when the air flow rate is large, the passive valve 17 is pushed open in the first chamber 23 to enter the outlet pipe 15 of the front muffler; when the flow rate is small, the passive valve 17 cannot be pushed open to suppress low-frequency noise When the air flow rate is small, part of the air flow overflows into the second chamber 24 from the muffler hole 12 of the front muffler inlet pipe, the muffler hole 19 of the middle muffler and the muffler hole 16 of the outlet pipe of the front muffler, and utilizes The sound-absorbing cotton in the second chamber 24 can absorb more energy, and finally all the air flow flows from the front muffler outlet pipe muffler hole 16 to the front muffler outlet pipe 15, and flows out from the front muffler outlet pipe into the middle muffler Cylinder body 5 carries out noise elimination again, and the noise elimination effect is better, enters tailpipe 7 at last.

The inside of the middle muffler cylinder body 5 communicates with a middle muffler muffler pipe 18, and the two ends of the middle muffler muffler pipe 18 communicate with the connecting pipe 3 and the tailpipe 7 respectively. The surface of 18 is densely provided with a plurality of said middle muffler muffler pipe muffler holes 19 along its axial direction, and the outer wall of said middle muffler muffler pipe 18 and the inner wall of said middle muffler cylinder 5 are also filled with suction Acoustic cotton.

The airflow passing through the front muffler barrel 2 flows to the middle muffler muffler pipe 18 for muffler again, so that the muffler effect is better and the noise of the automobile exhaust system can be effectively removed.

The resistance sheet 8 includes a resistance sheet frame 25 and a resistance sheet micropore 26, the resistance sheet frame 25 is in an arc-shaped structure and is fixed on the surface of the tail pipe 7, and the surface of the resistance sheet frame 25 is provided with a plurality of The microholes 26 of the resistance sheet connected by the acoustic holes.

Since the length of the tailpipe is longer, it will cause a loud roar at low speed and poor fourth-order and sixth-order noise of the car under acceleration conditions. The resistance plate microholes 26 on the resistance plate 8 allow the airflow to pass through the resistance plate. The microhole 26 can form a resonant cavity, thereby eliminating the standing wave problem caused by the long tail pipe and the like.

Both ends of the front muffler cylinder 2 are fixedly connected with front muffler end caps 4, both ends of the middle muffler cylinder 5 are fixedly connected with middle muffler end caps 6, and the surface of the connecting pipe 3 is fixedly connected with The front hook 10, the tail pipe hook 9 is fixedly connected to the surface of the tail pipe 7.

The front muffler end cover 4 keeps the front muffler cylinder 2 in a sealed state, the middle muffler end cover 6 keeps the middle muffler cylinder 5 in a sealed state, and the front hook 10 and the tailpipe hook 9 are for the whole device to be fixed on On the chassis of the car, avoid detaching from the chassis of the car.

Working principle: The air flow enters the third chamber 22 through the intake pipe 1. Since the middle pipe 21 of the front muffler communicates with the third chamber 22, the air flow discharged into the third chamber 22 will pass through the middle pipe 21 of the front muffler. Entering the first chamber 23, the surface of the first partition 13 and the second partition 14 are all provided with muffler holes so that the first chamber 23, the second chamber 24 and the third chamber 22 are in the In the connected state, part of the air flow enters the second chamber 24 through the muffler hole on the second partition 14, part of the energy is absorbed by the muffler cotton in the second chamber 24, and part of the air flows along the middle pipe 21 of the front muffler Entering the first chamber 23, when the air flow is large, the passive valve 17 is pushed open in the first chamber 23 to enter the outlet pipe 15 of the front muffler, and when the flow is small, the passive valve 17 cannot be pushed open to play a role The effect of suppressing low-frequency noise, when the air flow is small, part of the air flow overflows from the muffler hole 12 of the front muffler inlet pipe, the middle muffler muffler pipe muffler hole 19 and the front muffler outlet pipe muffler hole 16 to the second chamber 24 Inside, more energy can be absorbed by the sound-absorbing cotton in the second chamber 24, and finally all the air flows from the front muffler outlet pipe muffler hole 16 to the front muffler outlet pipe 15, and the front muffler outlet pipe flows out Enter the middle muffler barrel 5, perform noise reduction again, the noise reduction effect is better, and finally enter the tailpipe 7, because the length of the tailpipe is longer, it will cause a louder low-speed roar and the fourth-order and sixth-order automobiles under acceleration conditions The problem of poor noise, so a plurality of resistance sheets 8 are installed on the tail pipe 7, and the resistance sheet microholes 26 on the resistance sheet 8 can form a resonant cavity when the air flow passes through the resistance sheet microholes 26, thereby eliminating the Standing wave problems caused by long tail pipes, etc., when the volume of the muffler is limited, the device uses a passive valve structure to suppress low-frequency noise; the muffler holes on the first baffle 13 and the second baffle 14 and the front part The muffler inlet pipe muffler hole 12, the middle muffler muffler pipe muffler hole 19 and the front muffler outlet pipe muffler hole 16 effectively solve the back pressure problem of the exhaust system, and add resistance to the tailpipe 7 Sheet 8 effectively solves the problem of low-speed roar of the exhaust system.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above methods. Directly applying the concept and technical solutions of the present invention to other occasions without improvement falls within the protection scope of the present utility model.

Claims (6)

1. A muffler with a valve and a resistance plate is characterized in that: including intake pipe (1), anterior silencer barrel (2), connecting pipe (3), middle part silencer barrel (5) and tail pipe (7) that communicate in proper order, the inside from the top down of anterior silencer barrel (2) is equipped with anterior silencer intake pipe (11), anterior silencer middle part pipe (21) and anterior silencer outlet duct (15) in proper order, and the air current flows to in proper order through intake pipe (1) anterior silencer intake pipe (11), anterior silencer middle part pipe (21) and anterior silencer outlet duct (15) and connecting pipe (3) just carry out the noise elimination at the in-process that the air current flows, the surface of tail pipe (7) is opened along its length direction has a plurality of sound outlet just sound outlet department is equipped with resistance piece (8).

2. A muffler incorporating a valve and resistance plate as claimed in claim 1, wherein: the silencer is characterized in that a first partition plate (13) and a second partition plate (14) are fixedly connected to the inside of the front silencer cylinder body (2) from the air inlet pipe (1) to the direction of the connecting pipe (3) in sequence and the inner space of the front silencer cylinder body (2) is sequentially divided into a first cavity (23), a second cavity (24) and a third cavity (22) which are communicated through the first partition plate (13) and the second partition plate (14), the front silencer air inlet pipe (11), the front silencer middle pipe (21) and the front silencer air outlet pipe (15) all penetrate through the first partition plate (13) and the second partition plate (14), one end of the front silencer air inlet pipe (11) is communicated with the air inlet pipe (1), the other end of the front silencer air inlet pipe is communicated with the third cavity (22), the two ends of the front silencer middle pipe (21) are communicated with the first cavity (23) and the third cavity (22) respectively, a driven pipe (17) is arranged at the position where one end of the front silencer air outlet pipe (15) is communicated with the first cavity (23), the other end of the front silencer pipe (15) is communicated with the connecting pipe (3), a silencer opening valve (12) is arranged in the front silencer opening hole of the front silencer opening hole (12) of the front silencer air inlet pipe (11), and the front silencer cavity (12), and the front silencer outlet pipe (24) are arranged in the front silencer cavity (12), and the front silencer air inlet pipe (11), and the front silencer inlet pipe (22), and the front silencer air outlet pipe (11), A silencing hole (19) of the middle silencer silencing pipe and a silencing hole (16) of the front silencer air outlet pipe, and sound absorption cotton is filled in the second chamber (24).

3. A muffler incorporating a valve and a resistive flap as claimed in claim 2, wherein: the surfaces of the first partition plate (13) and the second partition plate (14) are provided with silencing holes so as to enable the first chamber (23), the second chamber (24) and the third chamber (22) to be in a communicated state.

4. A muffler incorporating a valve and a resistive flap as claimed in claim 3, wherein: the middle silencer is characterized in that a middle silencer muffler pipe (18) is communicated with the inside of the middle silencer cylinder (5), two ends of the middle silencer muffler pipe (18) are communicated with the connecting pipe (3) and the tail pipe (7) respectively, a plurality of middle silencer muffler pipe muffling holes (19) are densely formed in the surface of the middle silencer muffler pipe (18) along the axial direction of the middle silencer muffler pipe, and sound absorbing cotton is filled between the outer wall of the middle silencer muffler pipe (18) and the inner wall of the middle silencer cylinder (5).

5. The muffler with the valve and the resistive strip mounted thereon as claimed in claim 4, wherein: resistance piece (8) are including resistance piece frame (25) and resistance piece micropore (26), resistance piece frame (25) are the arc structure and fix the surface at tail pipe (7), resistance piece micropore (26) that have a plurality of and play phonate hole intercommunication are opened to the surface of resistance piece frame (25).

6. The muffler with valve and resistive flap of claim 5, wherein: the utility model discloses a silencer, including front silencer barrel (2), middle part silencer barrel (5), the both ends fixedly connected with front silencer end cover (4) of front silencer barrel (2), the both ends fixedly connected with middle part silencer end cover (6) of middle part silencer barrel (5), the fixed surface of connecting pipe (3) is connected with anterior lifting hook (10), the fixed surface of tail pipe (7) is connected with tail pipe lifting hook (9).

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