CN203847205U - Multi-cavity silencer - Google Patents
Multi-cavity silencer Download PDFInfo
- Publication number
- CN203847205U CN203847205U CN201420277940.0U CN201420277940U CN203847205U CN 203847205 U CN203847205 U CN 203847205U CN 201420277940 U CN201420277940 U CN 201420277940U CN 203847205 U CN203847205 U CN 203847205U
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- Prior art keywords
- chamber
- cavity
- outlet pipe
- suction tude
- wave
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Abstract
The utility model discloses a multi-cavity silencer. The multi-cavity silencer comprises a first cavity, a main cavity and a second cavity which are arrayed in sequence. The main cavity is a cylinder. A first cavity partitioning piece is arranged between the first cavity and the main cavity. A second cavity partitioning piece is arranged between the second cavity and the main cavity. The multi-cavity silencer further comprises an air inlet pipe and an exhaust pipe. The part, placed in the main cavity, of the air inlet pipe comprises an air inlet pipe wave part which is bent to form a wave shape. Air inlet pipe exhaust holes which are arrayed in a staggering mode are formed in the wave part of the air inlet pipe. According to the multi-cavity silencer, the multiple cavities are established, resistance to sound wave energy is increased, air flow turbulent flow circulation in the silencer is improved, exhaust pipe noise volume is effectively lowered through multiple measures, and noise lowering effect on vehicle low-frequency noise (100 Hz-150 Hz), medium-frequency noise (200 Hz-500 Hz) and high-frequency noise (above 1 kHz) is balanced.
Description
Technical field
The utility model belongs to vehicle muffler field, relates to a kind of multi-cavity baffler.
Background technique
In motor-driven vehicle going, can produce quite huge noise, conventionally on automobile exhaust pipe, installing baffler additional is a kind of effective noise abatement means, and the inner noise-reducing structure design of good baffler is for the erasure effect important in inhibiting of baffler.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of multi-cavity baffler, this multi-cavity silencer structure a plurality of chambers increase the resistances to acoustic wave energy, transformed the air stream turbulence circulation of baffler inside, on the path of turbulent flow circulation, installed noise elimination structure additional simultaneously, by multiple means, effectively reduce outlet pipe noise volume, and for automobile low frequency noise (100-150Hz), intermediate frequency noise (200-500Hz), the equilibrium of high frequency noise (more than 1kHz) noise reduction.
The technical scheme in the invention for solving the above technical problem is:
Comprise the first chamber, main chamber, second chamber of arranging successively, main chamber is cylinder, between the first chamber and main chamber, be provided with the first chamber barrier sheet, between the second chamber and main chamber, be provided with the second chamber barrier sheet, above-mentioned barrier sheet is all for guaranteeing that the sealing between chamber cuts off, also comprise suction tude and outlet pipe
Suction tude is passed through successively the first chamber, the first chamber barrier sheet, main chamber, the second chamber barrier sheet from the first chamber, suction tude is fixed on the second chamber barrier sheet by suction tude end cap, the part of suction tude in the first chamber is pipe, the part of suction tude in main chamber comprises one section of suction tude wave portion that bends to wave-like, the wavy curve shape that comprises some crests and trough interphase distribution that is, in suction tude wave portion, have staggered suction tude exhaust port
Outlet pipe passes through successively the second chamber, the second chamber barrier sheet, main chamber, the first chamber barrier sheet from the second chamber, outlet pipe is fixed on the first chamber barrier sheet by outlet pipe end cap, the part of outlet pipe in the second chamber is pipe, the part of outlet pipe in main chamber comprises one section of outlet pipe wave portion that bends to wave-like, in outlet pipe wave portion, have staggered outlet pipe inlet hole
Described suction tude wave portion and outlet pipe wave portion are symmetrical about main chamber's axis, corresponding outlet pipe wave portion of described main chamber and suction tude wave portion crest, wave trough position is also provided with long isolating plate and the short isolating plate of ring-type, wherein long isolating plate is clearly arranged on wave trough position, short isolating plate is arranged on crest location, Wave crest and wave trough is divided according to the distance with respect to axis, long isolating plate, short isolating plate does not all contact outlet pipe, suction tude, described long isolating plate, short isolating plate both sides are provided with a plurality of resistance sound projections, resistance sound projection consists of quieter material, preferably by cladding material, made.
The noise reduction principle of the basic scheme of above-mentioned multi-cavity baffler: 1, the first chamber barrier sheet, the second chamber barrier sheet is divided into the first chamber by muffler cavity, main chamber, the second chamber, air-flow enters in baffler successively by the first chamber from suction tude, main chamber, the second chamber, then from the second chamber, entering outlet pipe derives, suction tude, in the wave portion of outlet pipe in cavity, there is staggered suction tude exhaust port, outlet pipe inlet hole is realized the abundant circulation of air-flow and chamber, by being greater than the main chamber of tracheae caliber, first, the second chamber forms resistant noise-reducing structure, resistant noise-reducing structure is a kind of basic noise-reducing structure of baffler, is prior art noun, and the waveform that the cavity body structure by certain nested airflow line produces and incoming wave disappears mutually reduces acoustic wave energy, 2, by the structure of tracheae wave portion and the setting of length baffles, form the local turbulence in the chamber of air-flow between length baffles, the schematic diagram of local turbulence circulation as shown by the arrows in Figure 1, each local turbulence is prolonged and is being passed through the energy of resistant noise-reducing process loss sound wave, thereby forms multistage noise-reducing structure, on path by the resistance sound projection that arranges on isolating plate in local turbulence, thereby the energy that further consumes sound wave strengthens the erasure effect of every one-level chamber, and the setting of cladding material has avoided the assembly department of extra setting to increase complexity.In addition, first, second chamber also contributes to the buffer function of air-flow.
Further, the profile of the first chamber, the second chamber is frustum, and bottom surface larger in the first chamber, the second chamber is adjacent with the cylinder two ends of main chamber respectively.The frustum structure of the first chamber, the second chamber can be eliminated the high-frequency noise that high velocity air impacts the first chamber, the second chamber sidewall generation, but only for preferably constructing, the chamber configuration of cylinder can be used equally, should not be excluded outside protection domain.
Further, described resistance sound projection is divided into some groups and is arranged on isolating plate, and every group of resistance sound projection radially arranged.This arranges for preferably hindering sound projection.
Further, the quantity of the crest in suction tude wave portion is at 3-8.Outlet pipe wave portion and suction tude wave portion are symmetrical, and quantity is identical, and quantity is more than 8 too urgent destabilizing factors of bringing of local turbulence, high frequency erasure effect variation simultaneously, and excessively poor lower than three local turbulence effects that form, whole erasure effect is bad.
To sum up, the beneficial effects of the utility model are:
This multi-cavity silencer structure a plurality of chambers increase the resistances to acoustic wave energy, transformed the air stream turbulence circulation of baffler inside, on the path of turbulent flow circulation, installed noise elimination structure additional simultaneously, by multiple means, effectively reduce outlet pipe noise volume, and being respectively 7.3dB, 8.1dB, 9.8dB for automobile low frequency noise (100-150Hz), intermediate frequency noise (200-500Hz), the average noise reduction of high frequency noise (more than 1kHz), effect is remarkable, balanced.
Accompanying drawing explanation
Fig. 1 is the transverse cross-sectional view of multi-cavity baffler described in the utility model;
Fig. 2 is the right pseudosection in multi-cavity baffler A-A described in the utility model place.
Mark and corresponding component title in accompanying drawing:
The short isolating plate 53-resistance of the long isolating plate 52-of 10-first chamber 11-first chamber barrier sheet 20-second cavity 21-the second chamber barrier sheet 30-suction tude 31-suction tude wave 311-of the portion suction tude exhaust port 32-suction tude end cap 40-outlet pipe 41-outlet pipe wave 411-of portion outlet pipe inlet hole 42-outlet pipe end cap 50-51-of main chamber sound projection.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done to detailed description further, but mode of execution of the present utility model is not limited to this.
Be illustrated in figure 1 the transverse cross-sectional view of multi-cavity baffler described in the utility model, comprise the first chamber 10, main chamber 50, second chamber 20 of arranging successively, main chamber is cylinder, between the first chamber and main chamber, be provided with the first chamber barrier sheet 11, between the second chamber and main chamber, be provided with the second chamber barrier sheet 21, above-mentioned barrier sheet all cuts off for the sealing between chamber, also comprises suction tude 30 and outlet pipe 40
Suction tude 30 is passed through successively the first chamber, the first chamber barrier sheet, main chamber, the second chamber barrier sheet from the first chamber, suction tude 30 is fixed on the second chamber barrier sheet by suction tude end cap 32, the part of suction tude 30 in the first chamber is pipe, the part of suction tude 30 in main chamber comprises one section of suction tude wave portion 31 that bends to wave-like, the wavy curve shape that comprises some crests and trough interphase distribution that is, in suction tude wave portion, have staggered suction tude exhaust port 311
Outlet pipe 40 passes through successively the second chamber, the second chamber barrier sheet, main chamber, the first chamber barrier sheet from the second chamber, outlet pipe 40 is fixed on the first chamber barrier sheet by outlet pipe end cap 42, the part of outlet pipe 40 in the second chamber is pipe, the part of outlet pipe 40 in main chamber comprises one section of outlet pipe wave portion 41 that bends to wave-like, in outlet pipe wave portion, have staggered outlet pipe inlet hole 411
Described suction tude wave portion and outlet pipe wave portion are symmetrical about main chamber's axis, corresponding outlet pipe wave portion of described main chamber and suction tude wave portion crest, wave trough position is also provided with the long isolating plate 51 and short isolating plate 52 of ring-type, wherein long isolating plate is clearly arranged on wave trough position, short isolating plate is arranged on crest location, Wave crest and wave trough is divided according to the distance with respect to axis, long isolating plate, short isolating plate does not all contact outlet pipe, suction tude, described long isolating plate 51, short isolating plate 52 both sides are provided with a plurality of resistance sound projections 53, resistance sound projection consists of quieter material, preferably by cladding material, made.
The noise reduction principle of the basic scheme of above-mentioned multi-cavity baffler: 1, the first chamber barrier sheet, the second chamber barrier sheet is divided into the first chamber by muffler cavity, main chamber, the second chamber, air-flow enters in baffler successively by the first chamber from suction tude, main chamber, the second chamber, then from the second chamber, entering outlet pipe derives, suction tude, in the wave portion of outlet pipe in cavity, there is staggered suction tude exhaust port, outlet pipe inlet hole is realized the abundant circulation of air-flow and chamber, by being greater than the main chamber of tracheae caliber, first, the second chamber forms resistant noise-reducing structure, resistant noise-reducing structure is a kind of basic noise-reducing structure of baffler, is prior art noun, and the waveform that the cavity body structure by certain nested airflow line produces and incoming wave disappears mutually reduces acoustic wave energy, 2, by the structure of tracheae wave portion and the setting of length baffles, form the local turbulence in the chamber of air-flow between length baffles, the schematic diagram of local turbulence circulation as shown by the arrows in Figure 1, each local turbulence is prolonged and is being passed through the energy of resistant noise-reducing process loss sound wave, thereby forms multistage noise-reducing structure, on path by the resistance sound projection that arranges on isolating plate in local turbulence, thereby the energy that further consumes sound wave strengthens the erasure effect of every one-level chamber, and the setting of cladding material has avoided the assembly department of extra setting to increase complexity.In addition, first, second chamber also contributes to the buffer function of air-flow.
The profile of described the first chamber 10, the second chamber 20 is frustum, and bottom surface larger in the first chamber, the second chamber is adjacent with the cylinder two ends of main chamber respectively.The frustum structure of the first chamber, the second chamber can be eliminated the high-frequency noise that high velocity air impacts the first chamber, the second chamber sidewall generation, but only for preferably constructing, the chamber configuration of cylinder can be used equally, should not be excluded outside protection domain.
Fig. 2 is the right pseudosection in multi-cavity baffler A-A described in the utility model place, i.e. long isolating plate place sectional drawing, and described resistance sound projection 53 is divided into some groups and is arranged on isolating plate, and every group of resistance sound projection radially arranged.This arranges for preferably hindering sound projection.
The quantity of the crest in suction tude wave portion 31 is at 3-8.Quantity is more than 8 too urgent destabilizing factors of bringing of local turbulence, high frequency erasure effect variation simultaneously, and excessively poor lower than three local turbulence effects that form, whole erasure effect is bad.
To sum up, the beneficial effects of the utility model are:
This multi-cavity silencer structure a plurality of chambers increase the resistances to acoustic wave energy, transformed the air stream turbulence circulation of baffler inside, on the path of turbulent flow circulation, installed noise elimination structure additional simultaneously, by multiple means, effectively reduce outlet pipe noise volume, and being respectively 7.3dB, 8.1dB, 9.8dB for automobile low frequency noise (100-150Hz), intermediate frequency noise (200-500Hz), the average noise reduction of high frequency noise (more than 1kHz), effect is remarkable, balanced.
As mentioned above, can realize preferably the utility model.
Claims (4)
1. a multi-cavity baffler, it is characterized in that, comprise the first chamber (10), main chamber (50), second chamber (20) of arranging successively, main chamber is cylinder, between the first chamber and main chamber, be provided with the first chamber barrier sheet (11), be provided with the second chamber barrier sheet (21) between the second chamber and main chamber, above-mentioned barrier sheet is all for guaranteeing that the sealing between chamber cuts off, also comprise suction tude (30) and outlet pipe (40)
Suction tude (30) is passed through successively the first chamber, the first chamber barrier sheet, main chamber, the second chamber barrier sheet from the first chamber, suction tude (30) is fixed on the second chamber barrier sheet by suction tude end cap (32), the part of suction tude (30) in the first chamber is pipe, the part of suction tude (30) in main chamber comprises one section of suction tude wave portion (31) that bends to wave-like, in suction tude wave portion, have staggered suction tude exhaust port (311)
Outlet pipe (40) passes through successively the second chamber, the second chamber barrier sheet, main chamber, the first chamber barrier sheet from the second chamber, outlet pipe (40) is fixed on the first chamber barrier sheet by outlet pipe end cap (42), the part of outlet pipe (40) in the second chamber is pipe, the part of outlet pipe (40) in main chamber comprises one section of outlet pipe wave portion (41) that bends to wave-like, in outlet pipe wave portion, have staggered outlet pipe inlet hole (411)
Described suction tude wave portion and outlet pipe wave portion are symmetrical about main chamber's axis, corresponding outlet pipe wave portion of described main chamber and suction tude wave portion crest, wave trough position are also provided with the long isolating plate (51) and short isolating plate (52) of ring-type, long isolating plate, short isolating plate all do not contact outlet pipe, suction tude, and described long isolating plate (51), short isolating plate (52) both sides are provided with a plurality of resistance sound projections (53).
2. multi-cavity baffler according to claim 1, is further characterized in that, the profile of the first chamber (10), the second chamber (20) is frustum, and bottom surface larger in the first chamber, the second chamber is adjacent with the cylinder two ends of main chamber respectively.
3. multi-cavity baffler according to claim 1, is further characterized in that, described resistance sound projection (53) is divided into some groups and is arranged on isolating plate, and every group of resistance sound projection radially arranged.
4. multi-cavity baffler according to claim 1, is further characterized in that, the quantity of the crest in suction tude wave portion is at 3-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277940.0U CN203847205U (en) | 2014-05-28 | 2014-05-28 | Multi-cavity silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277940.0U CN203847205U (en) | 2014-05-28 | 2014-05-28 | Multi-cavity silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847205U true CN203847205U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420277940.0U Expired - Fee Related CN203847205U (en) | 2014-05-28 | 2014-05-28 | Multi-cavity silencer |
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| Country | Link |
|---|---|
| CN (1) | CN203847205U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982271A (en) * | 2014-05-28 | 2014-08-13 | 成都陵川特种工业有限责任公司 | Balancing silencer |
| CN105156177A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Automobile muffler |
| CN109278491A (en) * | 2018-08-17 | 2019-01-29 | 宁波泰尔汽车部件有限公司 | A kind of pipelines of automobile air conditioner noise-reducing structure |
| CN111828153A (en) * | 2020-07-06 | 2020-10-27 | 江西江铃集团新能源汽车有限公司 | Fuel automobile exhaust system |
-
2014
- 2014-05-28 CN CN201420277940.0U patent/CN203847205U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982271A (en) * | 2014-05-28 | 2014-08-13 | 成都陵川特种工业有限责任公司 | Balancing silencer |
| CN105156177A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Automobile muffler |
| CN109278491A (en) * | 2018-08-17 | 2019-01-29 | 宁波泰尔汽车部件有限公司 | A kind of pipelines of automobile air conditioner noise-reducing structure |
| CN111828153A (en) * | 2020-07-06 | 2020-10-27 | 江西江铃集团新能源汽车有限公司 | Fuel automobile exhaust system |
| CN111828153B (en) * | 2020-07-06 | 2021-10-01 | 江西江铃集团新能源汽车有限公司 | Fuel automobile exhaust system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |