CN110645074A - Photocatalyst automobile silencer - Google Patents

Photocatalyst automobile silencer Download PDF

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Publication number
CN110645074A
CN110645074A CN201910938235.8A CN201910938235A CN110645074A CN 110645074 A CN110645074 A CN 110645074A CN 201910938235 A CN201910938235 A CN 201910938235A CN 110645074 A CN110645074 A CN 110645074A
Authority
CN
China
Prior art keywords
baffle
cavity
photocatalyst
silencer
air inlet
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.)
Pending
Application number
CN201910938235.8A
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Chinese (zh)
Inventor
何小明
何少炜
曾昊
孙权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing University of Aeronautics and Astronautics
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201910938235.8A priority Critical patent/CN110645074A/en
Publication of CN110645074A publication Critical patent/CN110645074A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/02—Resonance and interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The photocatalyst automobile silencer comprises a silencer shell, a first baffle plate positioned on the right side in the silencer shell, a second baffle plate positioned in the silencer shell and positioned on the left side of the first baffle plate, a third baffle plate positioned in the silencer shell and positioned on the left side of the second baffle plate, a fourth baffle plate positioned in the silencer shell and positioned on the left side of the third baffle plate, and a fifth baffle plate positioned on the left side in the silencer shell, wherein a first cavity is formed among the silencer shell, the first baffle plate and the second baffle plate, a second cavity is formed among the silencer shell, the second baffle plate and the third baffle plate, a third cavity is formed among the silencer shell, the third baffle plate and the fourth baffle plate, a fourth cavity is formed among the silencer shell, the fourth baffle plate and the fifth baffle plate, an air inlet pipe is arranged in the middle of the left side wall in the silencer shell in a penetrating manner, and an air outlet pipe is, the lower parts of the second cavity and the third cavity are provided with connecting lamp holders, and the inner sides of the connecting lamp holders are connected with ultraviolet lamp tubes.

Description

Photocatalyst automobile silencer
The technical field is as follows:
the invention relates to a photocatalyst automobile silencer, and belongs to the technical field of automobile accessories.
Background art:
at present, with the rapid development of social economy and improvement of living standard of people in China, more and more automobiles are arranged on roads, and the problem of automobile exhaust pollution gradually becomes a great challenge due to the increase of the number of the automobiles. Under the condition of few vehicles, the self-purification capacity of the atmosphere can dissolve toxins discharged by the vehicles, but with the continuous and rapid increase of the quantity of the vehicles in China, the atmosphere cannot purify the tail gas with the toxins discharged by the vehicles, so that the harm to the health of people is generated, and if the environment is circulated for a long time, the serious harm can be caused to the environment and human bodies.
The common silencer in the market only simply processes the noise generated by automobile exhaust, and cannot effectively process the main components polluting the environment in the tail gas, so that the use value of the automobile silencer is difficult to show.
The invention content is as follows:
the invention provides a photocatalyst automobile silencer for solving the problems in the prior art.
The technical scheme adopted by the invention is as follows: a photocatalyst automobile silencer comprises a silencer shell, a first baffle positioned on the right side in the silencer shell, a second baffle positioned on the left side of the first baffle and positioned in the silencer shell, a third baffle positioned on the left side of the second baffle and positioned in the silencer shell, a fourth baffle positioned on the left side of the third baffle and positioned in the silencer shell, and a fifth baffle positioned on the left side of the silencer shell, wherein a first cavity is formed between the silencer shell, the first baffle and the second baffle, a second cavity is formed between the silencer shell, the second baffle and the third baffle, a third cavity is formed between the silencer shell, the third baffle and the fourth baffle, a fourth cavity is formed between the silencer shell, the fourth baffle and the fifth baffle, an air inlet pipe penetrates through the middle of the left side wall in the silencer shell, penetrates through the second baffle, and penetrates through the third baffle, The silencer comprises a silencer shell, a first baffle, a second baffle, a third baffle, a fourth baffle and a fifth baffle, wherein an air outlet pipe penetrates through the upper portion of the right side wall of the interior of the silencer shell, the air outlet pipe penetrates through the first baffle, the second baffle and the third baffle, connecting lamp holders are installed on the lower portions of the second cavity and the third cavity, and the inner sides of the connecting lamp holders are connected with ultraviolet lamp tubes.
Further, photocatalyst TiO2 spray is sprayed on the inner wall of the silencer shell, the outer walls of the air inlet pipe and the exhaust pipe, the left side of the first baffle, the two sides of the second baffle, the two sides of the third baffle and the right side of the fourth baffle.
Further, the first baffle, the second baffle, the third baffle, the fourth baffle and the fifth baffle are all the same in size and are welded with the inner wall of the silencer shell.
Further, a first cavity formed among the muffler shell, the first baffle and the second baffle is a friction reflection chamber.
Further, a second cavity formed among the muffler shell, the second baffle and the third baffle is a friction reflection chamber.
Further, a third cavity formed among the muffler shell, the third baffle and the fourth baffle is a friction reflection chamber.
Further, a fourth cavity formed among the muffler shell, the fourth baffle and the fifth baffle is a resonance interference chamber.
Furthermore, the upper part of the first baffle plate is provided with a hole penetrated by the exhaust pipe and welded with the exhaust pipe.
Furthermore, the upper part of the second baffle is provided with a hole penetrated by the exhaust pipe and welded with the exhaust pipe, the middle part of the second baffle is provided with an air inlet communicated with the air inlet pipe and welded with the air inlet pipe, and the lower part of the second baffle is provided with a first cavity air outlet hole which is also an air inlet hole of the second cavity.
Furthermore, the upper part of the third baffle plate is provided with an air outlet hole communicated with the exhaust pipe and welded with the exhaust pipe, the middle part of the third baffle plate is provided with a hole penetrated by the air inlet pipe and welded with the air inlet pipe, and the lower part of the third baffle plate is provided with an air outlet hole of the second cavity and an air inlet hole of the third cavity.
Furthermore, the upper part of the fourth baffle is provided with a hole penetrated by the air inlet pipe and welded with the air inlet pipe.
Furthermore, the upper part of the fifth baffle is provided with a hole penetrated by the air inlet pipe and welded with the air inlet pipe.
Furthermore, the air inlet pipe and the air outlet pipe are provided with densely distributed small holes on the pipe wall of the inner part of the second cavity.
Furthermore, a sealing ring is arranged at the mounting position of the connecting lamp holder and the silencer shell.
Furthermore, the ultraviolet lamp tube adopts high-temperature-resistant quartz glass as a lamp tube wall material.
The invention has the following beneficial effects: the photocatalyst automobile silencer has simple structure, convenient use and high practical value, and photocatalyst TiO sprayed on the inner wall of the silencer shell and each baffle plate2The spray agent is used for further catalytic oxidation of harmful components in automobile exhaust to generate pollution-free CO while silencing the automobile exhaust entering the silencer under the illumination of an ultraviolet lamp tube connected with a lamp holder in an installing way2、H2O and salt, thereby achieving effective noise elimination and tail gas treatment. The connecting lamp holder provided with the ultraviolet lamp tube can be detached, and the ultraviolet lamp tube can be detached for maintenance and replacement when the lamp tube is deposited with carbon or damaged after a period of time, so that the service life of the device is greatly prolonged. Meanwhile, a sealing ring is arranged at the mounting position of the connecting lamp holder and the silencer shell to seal the device, so that the air tightness of the device is ensured.
Description of the drawings:
FIG. 1 is a schematic view of the structure of a photocatalyst muffler for an automobile according to the present invention.
Fig. 2 is a front sectional view of fig. 1.
Fig. 3 is a left side sectional view of fig. 1.
Fig. 4 is a top sectional view of fig. 1.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
The photocatalyst automobile muffler comprises a muffler shell 1, a first baffle 2 positioned at the right side in the muffler shell 1,A second baffle 3 which is positioned inside the silencer shell 1 and is positioned on the left side of the first baffle 2, a third baffle 4 which is positioned inside the silencer shell 1 and is positioned on the left side of the second baffle 3, a fourth baffle 5 which is positioned inside the silencer shell 1 and is positioned on the left side of the third baffle 4, and a fifth baffle 6 which is positioned inside the silencer shell 1 and is positioned on the left side of the third baffle 4, wherein a first cavity is formed among the silencer shell 1, the first baffle 2 and the second baffle 3, a second cavity is formed among the silencer shell 1, the second baffle 3 and the third baffle 4, a third cavity is formed among the silencer shell 1, the third baffle 4 and the fourth baffle 5, a fourth cavity is formed among the silencer shell 1, the fourth baffle 5 and the fifth baffle 6, exhaust gas of a vehicle passes through different cavities to be treated in different cavities, an air inlet pipe 7 penetrates through the middle part of the left side wall inside the silencer shell 1, an air inlet pipe 7 penetrates through the second baffle plate 3, the third baffle plate 4, the fourth baffle plate 5 and the fifth baffle plate 6, an air outlet pipe 8 penetrates through the upper portion of the right side wall in the silencer shell 1, the air outlet pipe 8 penetrates through the first baffle plate 2, the second baffle plate 3 and the third baffle plate 4, a connecting lamp holder 9 is installed on the lower portion of the second cavity and the lower portion of the third cavity, an ultraviolet lamp tube 10 is connected to the inner side of the connecting lamp holder 9, photocatalyst TiO is sprayed on the inner wall of the silencer shell 1, the outer walls of the air inlet pipe 7 and the exhaust pipe 8, the left side of the first baffle plate 2, the two sides of the second baffle plate 3, the two sides of the third baffle plate 42A spray agent.
The lower part of the photocatalyst automobile muffler shell 1 is thick and is convenient to be provided with a threaded hole, the photocatalyst automobile muffler shell and a connecting lamp holder 9 of the ultraviolet lamp tube 10 are installed in a threaded connection mode, the working stability of the ultraviolet lamp tube 10 is guaranteed, the ultraviolet lamp tube 10 can be detached and maintained, and the service life of the device is prolonged.
The ultraviolet lamp tube 10 adopts a lamp tube wall made of high-temperature-resistant quartz glass, so that the working condition of the ultraviolet lamp tube 10 is ensured.
The muffler shell 1 is provided with a sealing ring at the joint with the connecting lamp holder 9, so that the air tightness of the whole device is ensured.
The work principle of the photocatalyst automobile silencer is as follows:
the noisy gas discharged from automobile engine is fed into the three-way catalytic converterMove along intake pipe 7 and move rightly, part gas can directly enter into in the middle of the second cavity from 7 through-holes of intake pipe of second cavity department, owing to the sharp reduction in motion space this moment, produce violent friction and make the acoustic energy loss, most gas can enter into first cavity, gas collides with first baffle 2 in first cavity, mutual friction between the gas, consume the acoustic energy, after the pressure of gas reaches certain degree in first cavity, gas is impressed the second cavity through the second cavity inlet port, produce the friction equally between the gas in the second cavity, photocatalyst TiO on the chamber wall simultaneously2The gas is catalyzed and oxidized under the illumination condition of the ultraviolet lamp tube 10, so that harmful gas in the gas is converted into harmless gas substances to a certain degree, after the gas pressure in the second cavity reaches a certain degree, the gas is pressed into the third cavity through the gas outlet hole of the second cavity, after the gas collides with the fourth baffle 5, sound waves with the same frequency as the original sound waves but opposite phases are generated in the fourth cavity, namely a resonance chamber, the sound waves generate resonance interference with the original sound waves to counteract the sound wave energy, meanwhile, the photocatalyst reaction also occurs in the third cavity, after the gas pressure of the third cavity reaches a certain degree, the gas is pressed into the gas outlet pipe 8 through the gas outlet hole of the third cavity and then is discharged along with the gas outlet pipe 8, in the process of propagation and movement, the noise in the gas is contacted with the first baffle 2, the second baffle 3, the third baffle 4 and the silencer shell 1, the sound waves are reflected and interfered during propagation, so that the sound wave energy is, the noise can be effectively removed, after the device is used for a period of time, the wall of the ultraviolet lamp tube 10 inside the device can be covered by soot, the device needs to be disassembled, cleaned, maintained or replaced to damage the lamp tube, the service life of the device is prolonged, and compared with the replacement of a new silencer, the noise-removing silencer saves cost and resources.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.

Claims (15)

1. The utility model provides a photocatalyst automobile muffler which characterized in that: comprises a silencer shell (1), a first baffle (2) positioned on the right side in the silencer shell (1), a second baffle (3) positioned in the silencer shell (1) and positioned on the left side of the first baffle (2), a third baffle (4) positioned in the silencer shell (1) and positioned on the left side of the second baffle (3), a fourth baffle (5) positioned in the silencer shell (1) and positioned on the left side of the third baffle (4), and a fifth baffle (6) positioned on the left side in the silencer shell (1), wherein a first cavity is formed among the silencer shell (1), the first baffle (2) and the second baffle (3), a second cavity is formed among the silencer shell (1), the second baffle (3) and the third baffle (4), and a third cavity is formed among the silencer shell (1), the third baffle (4) and the fourth baffle (5), silencer casing (1), fourth baffle (5) and fifth baffle (6) between form the fourth cavity, the inside left side wall middle part of silencer casing (1) is run through and is equipped with intake pipe (7), and intake pipe (7) run through second baffle (3), third baffle (4), fourth baffle (5) and fifth baffle (6), the inside right side wall upper portion of silencer casing (1) is run through and is equipped with outlet duct (8), and outlet duct (8) run through first baffle (2), second baffle (3) and third baffle (4), connection lamp stand (9) are installed to second cavity, third cavity lower part, connection lamp stand (9) inboard is connected with ultraviolet fluorescent tube (10).
2. The photocatalyst automobile muffler of claim 1, wherein: photocatalyst TiO2 spray is sprayed on the inner wall of the silencer shell (1), the outer walls of the air inlet pipe (7) and the exhaust pipe (8), the left side of the first baffle (2), the two sides of the second baffle (3), the two sides of the third baffle (4) and the right side of the fourth baffle (5).
3. The photocatalyst automobile muffler of claim 2, wherein: the first baffle (2), the second baffle (3), the third baffle (4), the fourth baffle (5) and the fifth baffle (6) are identical in size and are welded with the inner wall of the silencer shell (1).
4. The photocatalyst automobile muffler of claim 3, wherein: a first cavity formed among the silencer shell (1), the first baffle (2) and the second baffle (3) is a friction reflection chamber.
5. The photocatalyst automobile muffler of claim 3, wherein: and a second cavity formed among the silencer shell (1), the second baffle (3) and the third baffle (4) is a friction reflection chamber.
6. The photocatalyst automobile muffler of claim 3, wherein: and a third cavity formed among the silencer shell (1), the third baffle (4) and the fourth baffle (5) is a friction reflection chamber.
7. The photocatalyst automobile muffler of claim 3, wherein: and a fourth cavity formed among the muffler shell (1), the fourth baffle (5) and the fifth baffle (6) is a resonance interference chamber.
8. The photocatalyst automobile muffler as defined in any one of claims 4 to 7, wherein: the upper part of the first baffle (2) is provided with a hole penetrated by the exhaust pipe (8) and welded with the exhaust pipe (8).
9. The photocatalyst automobile muffler of claim 8, wherein: the upper part of the second baffle (3) is provided with a hole penetrated by the exhaust pipe (8) and welded with the exhaust pipe (8), the middle part is provided with an air inlet communicated with the air inlet pipe (7) and welded with the air inlet pipe (7), and the lower part is provided with a first cavity air outlet hole which is also an air inlet hole of the second cavity.
10. The photocatalyst automobile muffler of claim 9, wherein: the upper part of the third baffle (4) is provided with an air outlet hole communicated with the exhaust pipe (8) and welded with the exhaust pipe (8), the middle part of the third baffle is provided with a hole penetrated by the air inlet pipe (7) and welded with the air inlet pipe (7), and the lower part of the third baffle is provided with an air outlet hole of the second cavity and an air inlet hole of the third cavity.
11. The photocatalyst automobile muffler of claim 10, wherein: and the upper part of the fourth baffle (5) is provided with a hole penetrated by the air inlet pipe (7) and welded with the air inlet pipe (7).
12. The photocatalyst automobile muffler of claim 11, wherein: and the upper part of the fifth baffle (6) is provided with a hole penetrated by the air inlet pipe (7) and welded with the air inlet pipe (7).
13. The photocatalyst automobile muffler of claim 12, wherein: the air inlet pipe (7) and the air outlet pipe (8) are provided with densely distributed small holes on the pipe wall of the inner part of the second cavity.
14. The photocatalyst automobile muffler of claim 13, wherein: and a sealing ring is arranged at the mounting position of the connecting lamp holder (9) and the silencer shell (1).
15. The photocatalyst automobile muffler of claim 14, wherein: the ultraviolet lamp tube (10) adopts high-temperature-resistant quartz glass as a lamp tube wall material.
CN201910938235.8A 2019-09-30 2019-09-30 Photocatalyst automobile silencer Pending CN110645074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910938235.8A CN110645074A (en) 2019-09-30 2019-09-30 Photocatalyst automobile silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910938235.8A CN110645074A (en) 2019-09-30 2019-09-30 Photocatalyst automobile silencer

Publications (1)

Publication Number Publication Date
CN110645074A true CN110645074A (en) 2020-01-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220042440A1 (en) * 2020-08-07 2022-02-10 Pure-Light Technologies, Inc. Muffler including an internal photocatalyst and a light source
US11819824B2 (en) 2020-08-07 2023-11-21 Pure-Light Technologies, Inc. Surface coatings for self-decontamination
US11906157B2 (en) 2020-08-07 2024-02-20 Pure-Light Te chnologies, Inc. Photocatalyst formulations and coatings
US11964739B2 (en) 2020-08-07 2024-04-23 Roger K. Young Coatings that reduce or prevent barnacle attachment to a marine structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220042440A1 (en) * 2020-08-07 2022-02-10 Pure-Light Technologies, Inc. Muffler including an internal photocatalyst and a light source
US11680506B2 (en) * 2020-08-07 2023-06-20 Pure-Light Technologies, Inc. Muffler including an internal photocatalyst and a light source
US11819824B2 (en) 2020-08-07 2023-11-21 Pure-Light Technologies, Inc. Surface coatings for self-decontamination
US11906157B2 (en) 2020-08-07 2024-02-20 Pure-Light Te chnologies, Inc. Photocatalyst formulations and coatings
US11964739B2 (en) 2020-08-07 2024-04-23 Roger K. Young Coatings that reduce or prevent barnacle attachment to a marine structure

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