CN211851959U

CN211851959U - Silencer for active noise reduction of automobile

Info

Publication number: CN211851959U
Application number: CN202020341468.8U
Authority: CN
Inventors: 谢世朋
Original assignee: Nanjing Haoyan Jingjing Intelligent Technology Co ltd
Current assignee: Nanjing Haoyan Jingjing Intelligent Technology Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-11-03
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses a silencer for car is initiatively fallen and is made an uproar, including silencer main part and blast pipe, the one end of silencer main part is provided with the tail pipe, the other end fixedly connected with connecting pipe of silencer main part, the one end fixed mounting that the silencer main part was kept away from to the connecting pipe has first ring flange, the one end fixed mounting of blast pipe has the second ring flange, through the detachable connection of bolt, nut between second ring flange and the first ring flange, exhaust passage has been seted up to the inside of silencer main part, tail pipe, connecting pipe all communicate with each other with exhaust passage. A silencer for car is initiatively fallen and is made an uproar, be equipped with hush pipe, first sound absorption filler, second sound absorption filler and miniature sound generator, realize initiatively falling with the noise elimination of passive integral type and making an uproar, adopted neutralization, impedance and absorption etc. multiple mode fall the technique of making an uproar, can weaken the noise by a wide margin, bring better use prospect.

Description

Silencer for active noise reduction of automobile

Technical Field

The utility model relates to a noise elimination technical field, in particular to a silencer that is used for car initiative to fall and makes an uproar.

Background

The automobile silencer is mainly used for reducing the noise generated when an engine of a motor vehicle works, and the principle is that an automobile exhaust pipe is composed of two pipelines with different lengths, the two pipelines are separated and then intersected, and the length difference value of the two pipelines is equal to half of the wavelength of sound waves emitted by an automobile, so that two rows of sound waves are interfered to be mutually offset when being superposed to weaken the sound intensity, the transmitted sound is reduced, and the silencing effect is achieved.

The existing automobile silencer has certain defects in use, the silencing technology is single, the silencing effect is difficult to meet the public requirements, and therefore the silencer for automobile active noise reduction is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a silencer for car is initiatively fallen and is made an uproar, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a silencer for car is initiatively fallen and is made an uproar, includes silencer main part and blast pipe, the one end of silencer main part is provided with the tail pipe, the other end fixedly connected with connecting pipe of silencer main part, the one end fixed mounting that the silencer main part was kept away from to the connecting pipe has first ring flange, the one end fixed mounting of blast pipe has the second ring flange, through the detachable connection of bolt, nut between second ring flange and the first ring flange, exhaust passage has been seted up to the inside of silencer main part, tail pipe, connecting pipe all communicate with each other with exhaust passage, the inside fixed mounting of silencer main part has the hush pipe, the quantity of hush pipe is a plurality of groups, and the hush pipe hoop of a plurality of groups sets.

Preferably, the middle part of silencer main part is provided with first semicircle hoop and second semicircle hoop, the both ends of first semicircle hoop and second semicircle hoop are all through the detachable connection of bolt, nut, the peak fixed mounting of second semicircle hoop has the connecting rod, the top fixed mounting of connecting rod has the fixed plate, four groups of installation hole sites have been seted up to the top surface of fixed plate.

Preferably, a filter screen is arranged in the tail pipe, and a protective cover is fixedly arranged at one end of the tail pipe, which is far away from the silencer main body.

Preferably, one end of the muffler main body is provided with a threaded ring, the inner wall of the threaded ring is provided with an internal thread, one end of the tail pipe is provided with an external thread matched with the internal thread, and the tail pipe is in threaded connection with the threaded ring.

Preferably, the first flange plate is fixedly installed at one end of the connecting pipe through welding, and the second flange plate is fixedly installed at one end of the exhaust pipe through welding.

Preferably, a sealing ring is arranged between the first flange plate and the second flange plate, the outer surface of one side of the sealing ring is fixedly adhered to the first flange plate through an adhesive, and the outer surface of the other side of the sealing ring is fixedly adhered to the second flange plate through an adhesive.

Preferably, a micro sound generator, a first sound absorption filler and a second sound absorption filler are arranged inside the silencing pipe, the micro sound generator is arranged in the middle, the first sound absorption filler is located on one side of the micro sound generator, and the second sound absorption filler is located on the other side of the micro sound generator.

Compared with the prior art, the utility model discloses following beneficial effect has: the silencer for the active noise reduction of the automobile comprises a silencing pipe, a first sound absorption filler, a second sound absorption filler and a miniature sound generator, wherein the silencing pipe is hollow, noise sound waves are transmitted to the interior of the silencing pipe, the miniature sound generator emits reverse sound waves equal to the noise and neutralizes the noise, so that the noise reduction effect is realized, meanwhile, the noise sound waves firstly pass through the first sound absorption filler or the second sound absorption filler, the noise sound waves are weakened for the first time during passing, the weakened noise sound waves pass through the first sound absorption filler or the second sound absorption filler and reach the installation position of the miniature sound generator, the miniature sound generator can play a certain impedance role, the noise sound waves are weakened for the second time, part of the noise sound waves are reflected and return to the first sound absorption filler or the second sound absorption filler for the third time, and part of the noise sound waves penetrate through the miniature sound generator, reacing first sound absorption filler or second sound absorption filler department once more, weakening for the fourth time, the noise elimination of realization initiative and passive integral type is fallen and is fallen, simultaneously, adopted the technique of making an uproar of falling of multiple modes such as neutralization, impedance and absorption, can weaken the noise by a wide margin, do benefit to people and use, whole a silencer for car initiative is fallen and is fallen simple structure, convenient operation, the effect of using is better for traditional mode.

Drawings

Fig. 1 is a front view of the utility model discloses a silencer for car is actively fallen and is made an uproar.

Fig. 2 is an enlarged view of a in fig. 1 of a muffler for active noise reduction of an automobile according to the present invention.

Fig. 3 is the schematic diagram of the internal structure of the muffler main body in the muffler for actively reducing noise of the automobile of the present invention.

Fig. 4 is the utility model relates to a structure diagram of a fixed plate in silencer for car is actively fallen and is made an uproar.

In the figure: 1. a muffler main body; 2. a tail pipe; 3. a connecting pipe; 4. an exhaust pipe; 5. a fixing plate; 6. a first flange plate; 7. a second flange plate; 8. a seal ring; 9. an exhaust passage; 10. a sound-deadening tube; 11. a micro sound generator; 12. a first sound absorbing filler; 13. a second sound absorbing filler; 14. a first semi-circular hoop; 15. a second semi-circular hoop; 16. a connecting rod.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a muffler for active noise reduction of an automobile comprises a muffler body 1 and an exhaust pipe 4, wherein a tail pipe 2 is arranged at one end of the muffler body 1, a connecting pipe 3 is fixedly connected to the other end of the muffler body 1, a first flange 6 is fixedly arranged at one end of the connecting pipe 3 away from the muffler body 1, a second flange 7 is fixedly arranged at one end of the exhaust pipe 4, the second flange 7 is detachably connected with the first flange 6 through bolts and nuts, an exhaust channel 9 is arranged inside the muffler body 1, the tail pipe 2 and the connecting pipe 3 are both communicated with the exhaust channel 9, muffler pipes 10 are fixedly arranged inside the muffler body 1, the number of the muffler pipes 10 is multiple, and the multiple sets of the muffler pipes 10 are annularly arranged on the outer ring of the exhaust channel 9, so that noise can be greatly reduced through the cooperation of the muffler pipes 10 with other components, is beneficial to use.

Further, silencer main part 1's middle part is provided with first semicircle hoop 14 and second semicircle hoop 15, first semicircle hoop 14 all passes through the bolt with second semicircle hoop 15's both ends, the detachable connection of nut, second semicircle hoop 15's peak fixed mounting has connecting rod 16, connecting rod 16's top fixed mounting has fixed plate 5, four groups of installation hole sites have been seted up to fixed plate 5's top surface, fixed plate 5 back on the fixed vehicle chassis, with first semicircle hoop 14, second semicircle hoop 15, connecting rod 16 cooperatees, can play the supporting role for silencer main part 1, improve the steadiness after silencer main part 1 installs, durable.

Further, the inside of tail pipe 2 is provided with the filter screen, can play the filtering action to the flue gas, and the tail pipe 2 is kept away from the one end fixed mounting of silencer main part 1 and is had the protection casing, can play the guard action for the inside filter screen of tail pipe 2.

Further, the one end of silencer main part 1 is provided with the screw ring, and the inner wall of screw ring sets up there is the internal thread, and the one end of tail pipe 2 is seted up with internal thread assorted external screw thread, tail pipe 2 and screw ring threaded connection, and the dismouting is carried out in tail pipe 2 accessible just reversal rotation, pulls down the back, is convenient for clear up the inside filter screen of tail pipe 2.

Further, first ring flange 6 passes through welded fastening and installs in the one end of connecting pipe 3, and second ring flange 7 passes through welded fastening and installs in the one end of blast pipe 4, adopts the fixed of first wife 6 of welded mode completion and second ring flange 7, and it is high to accomplish the back bond strength of equipment, and is durable.

Furthermore, a sealing ring 8 is arranged between the first flange plate 6 and the second flange plate 7, the outer surface of one side of the sealing ring 8 is fixedly adhered to the first flange plate 6 through an adhesive, and the outer surface of the other side of the sealing ring 8 is fixedly adhered to the second flange plate 7 through an adhesive, so that the sealing effect of the joint surface of the first flange plate 6 and the second flange plate 7 is improved.

Furthermore, a micro sound generator 11, a first sound absorption filler 12 and a second sound absorption filler 13 are arranged inside the sound attenuation tube 10, the micro sound generator 11 is arranged in the middle, the first sound absorption filler 12 is positioned on one side of the micro sound generator 11, and the second sound absorption filler 13 is positioned on the other side of the micro sound generator 11, so that active and passive integrated sound attenuation and noise reduction are realized, and meanwhile, noise reduction technologies of various modes such as neutralization, impedance and absorption are adopted, and noise can be greatly reduced.

It should be noted that, the utility model relates to a silencer for automobile active noise reduction, when using, the noise enters the interior of the silencer main body 1, reach the interior of the silencing pipe 10, the miniature sound wave generator 11 sends the reverse sound wave equal to the noise, neutralize the noise, thereby realize the purpose of noise reduction, simultaneously, the noise sound wave firstly needs to pass through the first sound absorption filler 12 or the second sound absorption filler 13, when passing through, the noise sound wave is weakened for the first time, the noise sound wave after weakening passes through the first sound absorption filler 12 or the second sound absorption filler 13, reach the installation place of the miniature sound wave generator 11, the miniature sound wave generator 11 can play a certain impedance role, weaken the noise sound wave for the second time, part of the noise sound wave is reflected, return to the first sound absorption filler 12 or the second sound absorption filler 13, weaken for the third time, in addition part of the noise sound wave penetrates, reach first sound absorption filler 12 or second sound absorption filler 13 department once more, weaken for the fourth time, realize the noise elimination of initiative and passive integral type and fall the noise, simultaneously, adopted the technique of making an uproar of falling of multiple modes such as neutralization, impedance and absorption, can weaken the noise by a wide margin, it is comparatively practical.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A silencer for automobile active noise reduction comprises a silencer main body (1) and an exhaust pipe (4), and is characterized in that: a tail pipe (2) is arranged at one end of the muffler main body (1), a connecting pipe (3) is fixedly connected at the other end of the muffler main body (1), a first flange plate (6) is fixedly arranged at one end of the connecting pipe (3) far away from the silencer main body (1), a second flange (7) is fixedly arranged at one end of the exhaust pipe (4), the second flange (7) is detachably connected with the first flange (6) through bolts and nuts, an exhaust channel (9) is arranged in the muffler main body (1), the tail pipe (2) and the connecting pipe (3) are communicated with the exhaust channel (9), silencing tubes (10) are fixedly arranged in the silencer main body (1), the number of the silencing tubes (10) is a plurality of groups, and a plurality of groups of silencing pipes (10) are annularly arranged on the outer ring of the exhaust channel (9).

2. The muffler for active noise reduction of automobiles according to claim 1, wherein: the middle part of silencer main part (1) is provided with first semicircle hoop (14) and second semicircle hoop (15), the both ends of first semicircle hoop (14) and second semicircle hoop (15) are all through the detachable connection of bolt, nut, the peak fixed mounting of second semicircle hoop (15) has connecting rod (16), the top fixed mounting of connecting rod (16) has fixed plate (5), four groups of installation hole sites have been seted up to the top surface of fixed plate (5).

3. The muffler for active noise reduction of automobiles according to claim 1, wherein: the inside of tail pipe (2) is provided with the filter screen, the one end fixed mounting that the silencer main part (1) was kept away from in tail pipe (2) has the protection casing.

4. The muffler for active noise reduction of automobiles according to claim 1, wherein: one end of the silencer main body (1) is provided with a threaded ring, an inner thread is formed in the inner wall of the threaded ring, an outer thread matched with the inner thread is formed in one end of the tail pipe (2), and the tail pipe (2) is in threaded connection with the threaded ring.

5. The muffler for active noise reduction of automobiles according to claim 1, wherein: the first flange plate (6) is fixedly installed at one end of the connecting pipe (3) through welding, and the second flange plate (7) is fixedly installed at one end of the exhaust pipe (4) through welding.

6. The muffler for active noise reduction of automobiles according to claim 1, wherein: be provided with between first ring flange (6) and second ring flange (7) sealing washer (8), one side surface of sealing washer (8) is pasted fixedly through adhesive and first ring flange (6), the opposite side surface of sealing washer (8) is pasted fixedly through adhesive and second ring flange (7).

7. The muffler for active noise reduction of automobiles according to claim 1, wherein: the interior of muffler pipe (10) is provided with miniature sound generator (11), first sound absorption filler (12) and second sound absorption filler (13), miniature sound generator (11) set up between two parties, first sound absorption filler (12) are located miniature sound generator (11) one side, second sound absorption filler (13) are located the opposite side of miniature sound generator (11).