CN210919196U - Automobile silencer - Google Patents
Automobile silencer Download PDFInfo
- Publication number
- CN210919196U CN210919196U CN201921692584.8U CN201921692584U CN210919196U CN 210919196 U CN210919196 U CN 210919196U CN 201921692584 U CN201921692584 U CN 201921692584U CN 210919196 U CN210919196 U CN 210919196U
- Authority
- CN
- China
- Prior art keywords
- pipe
- exhaust
- automobile
- air inlet
- muffler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003584 silencer Effects 0.000 title abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002245 particle Substances 0.000 claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 25
- 238000000889 atomisation Methods 0.000 claims abstract description 18
- 238000001556 precipitation Methods 0.000 claims abstract description 18
- 230000003197 catalytic effect Effects 0.000 claims abstract description 15
- 230000030279 gene silencing Effects 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 238000000746 purification Methods 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 239000002244 precipitate Substances 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000005338 heat storage Methods 0.000 claims description 3
- 239000011232 storage material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- -1 specifically Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses an automobile muffler, which comprises a shell, an exhaust gas purification device and a silencing device, wherein the exhaust gas purification device and the silencing device are arranged in the shell and are sequentially arranged along the direction of automobile exhaust; the tail gas purification device comprises a solid particle filter, an oxygen generator, a catalytic reactor and an atomization precipitation chamber which are sequentially connected in series along the direction of automobile tail gas, wherein a precipitation liquid spraying device is arranged at the top of the atomization precipitation chamber, a precipitate collector is arranged at the bottom of the atomization precipitation chamber, and an air inlet of the solid particle filter is communicated with an air outlet of an engine; the silencer comprises a water removal cavity and a resonant cavity, wherein a water removal device is arranged in the water removal cavity, the water removal cavity is communicated with the gas outlet of the atomization precipitation chamber, an air inlet pipe and an exhaust pipe are arranged in the resonant cavity, a plurality of through holes are formed in the pipe walls of the air inlet pipe and the exhaust pipe, the air inlet end of the air inlet pipe is communicated with the water removal cavity, and the air outlet end of the exhaust pipe is communicated with a discharge pipe of automobile exhaust.
Description
Technical Field
The utility model relates to an amortization technical field especially relates to an automobile silencer.
Background
Nowadays, the number of automobiles is more and more, but the environmental stress is more and more. During the running of the automobile, the noise of the engine is discharged to the surrounding environment along with the exhaust gas. At present, in order to eliminate noise in automobile exhaust, a silencer is generally installed on an exhaust pipe. However, the exhaust gas of automobiles contains more pollutants, such as solid particles, HC, NOX、COXAnd so on, if these pollutants are directly flowed into the muffler without being treated, the fixed particles are easily deposited, clogged, and so on in the muffler pipe, resulting in deterioration of the muffling quality of the muffler. Meanwhile, if the air is directly discharged into the air, serious air pollution is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an automobile silencer can get rid of the pollutant among the automobile exhaust earlier, carries out the amortization to the noise in the tail gas again, reduces the influence to the environment, improves the life-span of muffler.
The utility model adopts the technical proposal that: an automobile silencer comprises a shell, an exhaust gas purification device and a silencing device, wherein the exhaust gas purification device and the silencing device are arranged in the shell and are sequentially arranged along the direction of automobile exhaust;
the tail gas purification device comprises a solid particle filter, an oxygen generator, a catalytic reactor and an atomization precipitation chamber which are sequentially connected in series along the direction of automobile tail gas, wherein a precipitation liquid spraying device is arranged at the top of the atomization precipitation chamber, a precipitate collector is arranged at the bottom of the atomization precipitation chamber, and an air inlet of the solid particle filter is communicated with an air outlet of an engine;
the silencer comprises a water removal cavity and a resonant cavity, wherein a water removal device is arranged in the water removal cavity, the water removal cavity is communicated with the gas outlet of the atomization precipitation chamber, an air inlet pipe and an exhaust pipe are arranged in the resonant cavity, a plurality of through holes are formed in the pipe walls of the air inlet pipe and the exhaust pipe, the air inlet end of the air inlet pipe is communicated with the water removal cavity, and the air outlet end of the exhaust pipe is communicated with a discharge pipe of automobile exhaust.
Preferably, the catalytic reactor comprises a catalyst plate and a heating ring wound around the outer surface of the catalyst plate.
Further preferably, the catalyst plate is a porous ceramic carrier.
Further optimize, the casing includes metal shell body and metal inner casing, be equipped with the heat accumulation material layer between metal shell body and the metal inner casing.
Further preferably, the inner wall of the resonant cavity is provided with a sound-absorbing cotton layer.
Further optimizing, the inlet end and the outlet end of the solid particle filter are provided with differential pressure sensors, and the differential pressure sensors are electrically connected with an external alarm.
Further preferably, the water removal device is a water removal grille.
Further optimizing, the air inlet of intake pipe is equipped with the cotton that absorbs water.
The utility model has the advantages that: after automobile exhaust enters the shell, the automobile exhaust firstly flows through the solid particle filter, the oxygen generator, the catalytic reactor and the atomization precipitation chamber in sequence to remove solid particles in the exhaust, harmful gas is converted into harmless gas, moisture contained in the exhaust is removed through the water removal cavity, water vapor is prevented from entering a subsequent silencing pipe to corrode the silencing pipe, and finally the automobile exhaust enters the resonant cavity to remove noise of the exhaust and is finally discharged into the atmospheric environment.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of an automobile muffler according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the automobile muffler according to the embodiment of the present invention comprises a casing 100, an exhaust gas purifying device and a silencing device, wherein the exhaust gas purifying device and the silencing device are arranged in the casing 100 and are sequentially arranged along the direction of the automobile exhaust;
the tail gas purification device comprises a solid particle filter 210, an oxygen generator 220, a catalytic reactor 230 and an atomization settling chamber 240 which are sequentially connected in series along the direction of automobile tail gas, wherein the top of the atomization settling chamber 240 is provided with a precipitation liquid spraying device 241, the bottom of the atomization settling chamber 240 is provided with a precipitate collector 242, and the air inlet of the solid particle filter 210 is communicated with the exhaust port of the engine;
the silencing device comprises a dewatering cavity 310 and a resonant cavity 320, wherein a dewatering device is arranged in the dewatering cavity 310, the dewatering cavity 310 is communicated with the air outlet of the atomization precipitation chamber 240, an air inlet pipe 510 and an exhaust pipe 520 are arranged in the resonant cavity 320, a plurality of through holes 600 are formed in the pipe walls of the air inlet pipe 510 and the exhaust pipe 520, the air inlet end of the air inlet pipe 510 is communicated with the dewatering cavity 310, and the air outlet end of the exhaust pipe 520 is communicated with the exhaust pipe of automobile exhaust.
After entering the housing through the air inlet 910, the exhaust gas of the automobile first passes through the solid particle filter 210, the oxygen generator 220, the catalytic reactor 230 and the atomization settling chamber 240 in sequence. The solid particle filter 210 first filters out solid particles of the exhaust gas, and the filtered exhaust gas is mixed with oxygen generated from the oxygen generator 220 after passing through the solid particle filter 210.
The mixed gas enters the catalytic reactor 230, and HC and NO contained in the exhaust gasX、COX、H2Production of water and NO by reaction of S, etc. with oxygen2、CO2、SO2。
The tail gas enters into the atomization precipitation chamber 240, and the precipitation liquid spraying device 241 sprays out the precipitation liquid. The precipitation solution can be alkaline solution, specifically, sodium hydroxide, calcium hydroxide, etc. NO2、CO2、SO2Producing corresponding salt with alkali liquor,such as NaCO3、NaNO3、Na2SO4And thus converted to non-contaminating salts, and falls into the sediment trap 242 for collection and discharge to the outside in a periodic or quantitative manner.
Tail gas can produce steam at the in-process that purifies through tail gas cleanup unit, and steam flows along with the air current, if not getting rid of steam, can get into subsequent hush pipe, and what hush pipe generally chooseed for use is that metal material makes, has steam, produces the corrosion to hush pipe easily.
Therefore, the purified tail gas firstly enters the water removing cavity 310, and the water removing cavity 310 is provided with a water removing device to remove water vapor in the tail gas, so as to ensure that the tail gas entering the resonant cavity 320 keeps a dry state. The dried tail gas enters the resonant cavity 320 through the air inlet pipe 510, because the length difference between the two pipes of the air outlet pipe 520 and the air inlet pipe 510 is equal to half of the wavelength of the sound wave emitted by the automobile, the two rows of sound waves cancel each other out to weaken the sound intensity when being interfered when being superposed, and the sound in the resonant cavity 320 resonates back and forth to cancel each other out, so that the sound is reduced, the silencing effect is achieved, and the tail gas after noise reduction is discharged through the air outlet 920.
Preferably, the water removal device can select a water removal grid, and when the tail gas flows through the water removal grid, water vapor is adhered to filaments of the water removal grid, so that water is separated out immediately.
Furthermore, the water absorbent cotton is arranged at the air inlet of the air inlet pipe 510, so that the water content in the tail gas can be further reduced.
The catalytic reactor 230 includes a catalyst plate 231 and a heating ring 232 wound around an outer surface of the catalyst plate 231. Electric heating ring is selected as heating ring 232, and when the weather is cold, or before the engine is started, heating ring 232 preheats the air of catalytic reactor 230 in advance, so that catalytic converter plate 231 is rapidly heated up, catalytic temperature is ensured, initial stage of automobile starting is avoided, and tail gas enters the silencer without purification.
Preferably, the catalyst plate 231 is a porous ceramic support. The high porosity of the porous ceramic carrier is beneficial to improving the contact area of the tail gas and the catalyst and improving the catalytic effect.
Preferably, the air inlet end and the air outlet end of the solid particle filter 210 are provided with differential pressure sensors 800, and the differential pressure sensors 800 are electrically connected with an external alarm.
The case 100 includes a metal outer case and a metal inner case with a heat storage material layer 700 interposed therebetween.
By designing the heat storage material layer 700, the temperature of the tail gas is ensured, and the loss of the temperature of the tail gas is avoided, so that the tail gas can maintain a higher reaction temperature when passing through the catalytic reactor 230, and has a higher conversion rate.
Furthermore, by arranging the sound absorption cotton layer 321 on the inner wall of the resonant cavity 320, the noise in the tail gas can be further absorbed, and the noise reduction effect is improved.
During the long-term use of the solid particle filter 210, particles are continuously accumulated in the solid particle filter 210, the ventilation of the exhaust gas through the solid particle filter 210 is reduced, and the pressure difference between the inlet end and the outlet end of the solid particle filter 210 is gradually increased. When the differential pressure sensor 800 detects that the pressure difference between the two ends gradually increases to a certain range, it indicates that the solid particle filter 210 is seriously blocked, a new solid particle filter 210 needs to be replaced again, and the detected condition is fed back to the alarm to remind a user of replacing the solid particle filter in time.
Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. An automotive muffler characterized in that: the automobile exhaust purifying device comprises a shell (100), an exhaust purifying device and a silencing device, wherein the exhaust purifying device and the silencing device are arranged in the shell (100) and are sequentially arranged along the direction of automobile exhaust;
the tail gas purification device comprises a solid particle filter (210), an oxygen generator (220), a catalytic reactor (230) and an atomization settling chamber (240) which are sequentially arranged in series along the direction of automobile tail gas, wherein a precipitation liquid spraying device (241) is arranged at the top of the atomization settling chamber (240), a precipitate collector (242) is arranged at the bottom of the atomization settling chamber (240), and an air inlet of the solid particle filter (210) is communicated with an air outlet of an engine;
silencing device is including removing water chamber (310) and resonant cavity (320), be equipped with water trap in removing water chamber (310), remove the gas outlet intercommunication of water chamber (310) and atomizing deposit room (240), be equipped with intake pipe (510) and blast pipe (520) in resonant cavity (320), all be equipped with a plurality of perforation (600) on the pipe wall of intake pipe (510) and blast pipe (520), the inlet end and the chamber (310) intercommunication that removes of intake pipe (510), the delivery end and the exhaust pipe intercommunication of automobile exhaust of blast pipe (520) of giving vent to anger.
2. The automotive muffler of claim 1, wherein: the catalytic reactor (230) comprises a catalyst plate (231) and a heating ring (232) wound on the outer surface of the catalyst plate (231).
3. The automotive muffler of claim 2, wherein: the catalyst plate (231) is a porous ceramic carrier.
4. The muffler for an automobile according to any one of claims 1 to 3, wherein: the shell (100) comprises a metal outer shell and a metal inner shell, and a heat storage material layer (700) is arranged between the metal outer shell and the metal inner shell.
5. The muffler for an automobile according to any one of claims 1 to 3, wherein: the inner wall of the resonant cavity (320) is provided with a sound absorption cotton layer (321).
6. The muffler for an automobile according to any one of claims 1 to 3, wherein: and the gas inlet end and the gas outlet end of the solid particle filter (210) are provided with differential pressure sensors (800), and the differential pressure sensors (800) are electrically connected with an external alarm.
7. The muffler for an automobile according to any one of claims 1 to 3, wherein: the dewatering device is a dewatering grid.
8. The muffler for an automobile according to any one of claims 1 to 3, wherein: and the air inlet of the air inlet pipe (510) is provided with absorbent cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921692584.8U CN210919196U (en) | 2019-10-10 | 2019-10-10 | Automobile silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921692584.8U CN210919196U (en) | 2019-10-10 | 2019-10-10 | Automobile silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210919196U true CN210919196U (en) | 2020-07-03 |
Family
ID=71344029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921692584.8U Expired - Fee Related CN210919196U (en) | 2019-10-10 | 2019-10-10 | Automobile silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210919196U (en) |
-
2019
- 2019-10-10 CN CN201921692584.8U patent/CN210919196U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 |