CN117565910B - Train wind channel damping noise reduction device and air conditioner ventilation system - Google Patents
Train wind channel damping noise reduction device and air conditioner ventilation system Download PDFInfo
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- CN117565910B CN117565910B CN202311605102.1A CN202311605102A CN117565910B CN 117565910 B CN117565910 B CN 117565910B CN 202311605102 A CN202311605102 A CN 202311605102A CN 117565910 B CN117565910 B CN 117565910B
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- 230000009467 reduction Effects 0.000 title claims abstract description 50
- 238000009423 ventilation Methods 0.000 title claims abstract description 39
- 238000013016 damping Methods 0.000 title description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 34
- 239000000428 dust Substances 0.000 claims description 22
- 238000004378 air conditioning Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 6
- 239000012774 insulation material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/009—Means for ventilating only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- 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
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The application discloses a train air duct vibration and noise reduction device and an air conditioner ventilation system, wherein the train air duct vibration and noise reduction device is arranged in a train air duct, the train air duct comprises an upper cover with two bent long sides and a bottom plate connected with the two long sides of the upper cover, a long-strip-shaped cavity I is formed between the bottom plate and the upper cover in a surrounding mode, and a plurality of air outlet ducts communicated with the long-strip-shaped cavity I are arranged on the bottom plate in a penetrating mode. The beneficial effects are that: according to the technical scheme, the microperforated panel is laid in the air duct to absorb the noise of the air duct, so that the purpose of noise reduction is achieved, vibration is reduced along with the noise of the air duct of the train after the noise of the air duct of the train is reduced, and therefore the vibration reduction and noise reduction of the air duct of the train are achieved.
Description
Technical Field
The invention relates to the field of train ventilation systems, in particular to a train air duct vibration and noise reduction device and an air conditioner ventilation system.
Background
With the development of social economy, the running speed of the train is higher and higher, the functions of an air conditioning and ventilation system of the train are more and more powerful, the current latest high-speed train can reach 380 km/h, the air conditioning temperature in each carriage can be independently regulated, and compared with the traditional old common-speed train, the riding experience is obviously improved.
However, the current air conditioning and ventilation system of the train has the problem that the noise of the air duct of the train is relatively large, although the technical means of paving the sound insulation material on the inner wall of the air duct is adopted in the industry, the sound insulation service life is not long, the sound insulation material needs to be replaced regularly, the cost is high, and the noise reduction effect is affected because dust in the air flow in the air duct can be adsorbed on the surface of the sound insulation material to cause the blockage of sound absorption micropores.
In addition, if the fresh air entering the air duct is filtered firstly to remove dust, and clean air is then sent into the air duct, the problems that the sound insulation material is not long in sound insulation service life and needs to be replaced regularly can be avoided, but the wind resistance of the air duct is increased, the normal operation of an air conditioner ventilation system is affected, the power consumption is greatly improved, and the feasibility is not achieved.
Disclosure of Invention
The invention mainly aims to provide a train air duct vibration and noise reduction device and an air conditioner ventilation system, and aims to solve the problem that the noise of an existing train air duct is large.
In order to solve the problems, the invention provides a vibration and noise reduction device for a train air duct, which is arranged in the train air duct, wherein the train air duct comprises an upper cover with two bent long sides and a bottom plate connected with the two long sides of the upper cover, a strip-shaped cavity I is formed between the bottom plate and the upper cover in a surrounding manner, and a plurality of air outlet channels communicated with the strip-shaped cavity I are arranged on the bottom plate in a penetrating manner;
the train air duct vibration and noise reduction device comprises:
The partition plate is arranged in the first strip-shaped cavity and is arranged at intervals with the upper cover and the bottom plate, so that a ventilation cavity is defined between the partition plate and the upper cover as well as between the partition plate and the bottom plate, and a second strip-shaped cavity is defined on the inner side of the partition plate;
The microperforated panel is arranged in the second strip-shaped cavity and is arranged at intervals with the partition plate, so that a sound absorption cavity is defined between the microperforated panel and the partition plate, and the inner side of the microperforated panel defines a third strip-shaped cavity;
The light filter screen is arranged in the strip-shaped cavity III and is arranged at intervals with the microperforated panel, so that an ash removing cavity is defined between the light filter screen and the microperforated panel, and the inner side of the light filter screen is defined with an air delivery cavity;
the whistle comprises a plurality of whistles, a partition plate and a microperforated plate, wherein the air inlet end of the whistle is communicated with the ventilation cavity, and the air outlet end of the whistle is communicated with the ash removal cavity.
In one embodiment, the whistle is not in contact with the lightweight screen.
In an embodiment, the light filter screen is provided with a first through hole, the first through hole is communicated with the air outlet channel through a third mounting ring, the third mounting ring is coaxial with the air outlet channel, one end of the third mounting ring is fixedly connected with the first through hole in a sealing mode, and the other end of the third mounting ring is fixedly connected with the air outlet channel in a sealing mode.
In an embodiment, the micro-perforated plate is provided with a second through hole, the second through hole is coaxial with the first through hole, and the aperture of the second through hole is larger than that of the first through hole;
the third outer coaxial spacer sleeve of the mounting ring is provided with a second mounting ring, one end of the second mounting ring is fixedly connected with the second through hole in a sealing mode, and the other end of the second mounting ring is fixedly connected with the bottom plate in a sealing mode.
In an embodiment, a third through hole is formed in the partition board, the third through hole is coaxial with the second through hole, and the aperture of the third through hole is larger than that of the second through hole;
The outer coaxial spacer sleeve of installing ring is equipped with the installing ring one, the sealed fixed connection through-hole three of one end of installing ring one, the sealed fixed connection bottom plate of the other end.
In an embodiment, the first mounting ring is made of the same material as the partition plate, the second mounting ring is made of the same material as the microperforated plate, and the third mounting ring is made of the same material as the light filter screen.
In one embodiment, the ventilation cavity and the sound absorbing cavity are not communicated with each other.
In an embodiment, be provided with the pillar in the deashing cavity, light filter screen and microperforated panel are connected at the both ends of pillar, light filter screen is fixed in rectangular shape cavity three through many spinal branch posts to with microperforated panel interval setting.
In one embodiment, the plurality of posts and whistles are evenly distributed over the microperforated panel.
In addition, the invention also provides an air conditioner ventilation system which comprises a train air duct and the train air duct vibration and noise reduction device.
Advantageous effects
1. According to the technical scheme, the microperforated panel is laid in the air duct to absorb the air duct noise, so that the aim of noise reduction is fulfilled, and vibration is reduced along with the reduction of the noise of the air duct of the train after the noise of the air duct of the train is reduced, so that the vibration reduction and the noise reduction of the air duct of the train are realized;
2. According to the technical scheme, the filter screen is laid in the microperforated panel, dust in air flow in the air duct is filtered, the reduction of vibration and noise of the microperforated panel due to the fact that the dust is adsorbed on the microperforated panel to block sound absorption micropores is prevented, the service life of the microperforated panel is effectively prolonged, the microperforated panel does not need to be replaced regularly, and the cost is low;
3. According to the technical scheme, the micro-perforated plate and the inner wall of the air duct are arranged at intervals to form the ventilation cavity, the micro-perforated plate is penetrated and uniformly provided with the whistle, the ventilation cavity is inflated, the whistle is driven by air flow entering the whistle to sound, the filter screen is driven by sound to vibrate, and therefore dust on the filter screen is shaken off, and a great amount of dust adsorbed on the filter screen is prevented from affecting vibration reduction and noise reduction of the air duct of the train.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a train wind tunnel;
FIG. 2 is a partial bottom view of a train tunnel;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic illustration of FIG. 2 with the bottom plate removed;
FIG. 5 is a schematic diagram of the air flow in the train tunnel during normal operation of the air conditioning ventilation system;
FIG. 6 is a schematic diagram of the air flow in the train air duct when the ventilation cavity is ventilated.
The reference numerals are explained as follows:
1. An upper cover; 2. a bottom plate; 3. a first strip-shaped cavity;
4. a partition plate; 41. a first mounting ring;
5. a microperforated panel; 51. a second mounting ring;
6. A light filter screen; 61. a third mounting ring;
7. Whistle; 8. a ventilation chamber; 9. a sound absorbing cavity; 10. ash removal cavity; 11. an air outlet duct; 12. a first through hole; 13. an air delivery cavity; 14. and (5) a pillar.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The train air duct vibration and noise reduction device has the advantages that the microperforated panel 5 is laid in the air duct to absorb air duct noise, so that the purpose of noise reduction is achieved, after the train air duct noise is reduced, vibration is reduced along with the reduction, train air duct vibration and noise reduction is achieved, in addition, the train air duct vibration and noise reduction device filters dust in air flow in an air duct through laying a filter screen in the microperforated panel 5, dust is prevented from being adsorbed on the microperforated panel 5 to block sound absorption micropores, so that the vibration and noise reduction performance of the microperforated panel 5 is reduced, the service life of the microperforated panel 5 is effectively prolonged, the microperforated panel 5 is not required to be replaced regularly, the cost is low, further, the train air duct vibration and noise reduction device is provided with a ventilation cavity 8 through arranging a plurality of whistle panels 7 on the microperforated panel 5 at intervals with the inner wall of the air duct, the whistle cavity 8 is inflated, the air flow enters the whistle 7 to drive the whistle 7 to sound, the sound is driven by the filter screen to vibrate, and dust on the filter screen is prevented from being shaken off, and a large amount of dust adsorbed on the filter screen is prevented from affecting train air duct vibration and noise reduction.
Specifically, in an embodiment of the invention, as shown in fig. 1-4, the vibration and noise reduction device for a train air duct is arranged in the train air duct, the train air duct comprises an upper cover 1 with two curved long sides and a bottom plate 2 detachably, sealed and fixedly connected with the two long sides of the upper cover 1, a strip-shaped cavity I3 is formed between the bottom plate 2 and the upper cover 1 in a surrounding mode, a plurality of air outlet ducts 11 communicated with the strip-shaped cavity I3 are arranged on the bottom plate 2 in a penetrating mode, air-conditioning air generated by an air-conditioning ventilation system is sent to each carriage through the strip-shaped cavity I3, then the air-conditioning air is injected into the carriage through the air outlet ducts 11 of each carriage, the temperature in the carriage is regulated, and the air direction in the strip-shaped cavity I3 is shown by an arrow in fig. 1.
In this embodiment, as shown in fig. 3 and 4, the train air duct vibration and noise reduction device includes: the novel micro-perforated plate comprises a partition plate 4, a micro-perforated plate 5, a light filter screen 6 and a plurality of whistle 7, wherein the partition plate 4 is arranged in a first long-strip-shaped cavity 3 and is arranged at intervals with an upper cover 1 and a bottom plate 2, so that a ventilation cavity 8 is defined between the partition plate 4 and the upper cover 1 and between the partition plate and the bottom plate 2, the ventilation cavity 8 is positioned at the outer side of the partition plate 4, and a second long-strip-shaped cavity is defined at the inner side of the partition plate 4.
In this embodiment, as shown in fig. 3 and fig. 4, the micro-perforated plate 5 is disposed in the second elongated cavity and is spaced from the partition plate 4, so that a sound-absorbing cavity 9 is defined between the micro-perforated plate 5 and the partition plate 4, the sound-absorbing cavity 9 cooperates with the micro-perforated plate 5 to jointly realize vibration and noise reduction of the train air duct, a plurality of micro-through holes are uniformly distributed on the micro-perforated plate 5, and the micro-through holes and the sound-absorbing cavity 9 are utilized to absorb the air duct noise, so that the air duct noise and vibration are reduced, the vibration and noise reduction of the train air duct is realized, the sound-absorbing cavity 9 is located at the outer side of the micro-perforated plate 5, and the inner side of the micro-perforated plate 5 defines a third elongated cavity.
In this embodiment, as shown in fig. 3 and fig. 4, the light filter screen 6 is disposed in the elongated cavity three and is spaced from the microperforated panel 5, so that an ash-removing cavity 10 is defined between the light filter screen 6 and the microperforated panel 5, the purpose of the space arrangement of the light filter screen 6 and the microperforated panel 5 is to conveniently set the whistle 7 and prevent the whistle 7 from bursting the light filter screen 6, the light filter screen 6 is light in weight and thin in thickness, the whistle 7 vibrates the filter screen after sounding, so that dust on the light filter screen can be shaken off, the ash-removing cavity 10 is located on the outer side of the light filter screen 6, an air-delivering cavity 13 is defined on the inner side of the light filter screen 6, air-conditioning air generated by the air-conditioning ventilation system flows in the air-delivering cavity 13 and is then injected into each compartment through the air-delivering duct 11, and the temperature in the compartment is adjusted, in this process, the dust in the air-conditioning air is not filtered by the light filter screen 6, so that the problem that the micro-holes of the microperforated panel 5 are blocked by the light filter screen 6 cannot occur, the noise-removing performance of the microperforated panel 5 can be kept for a long time, the noise-reducing performance of the microperforated panel 5 can be effectively prolonged, the service life of the microperforated panel 5 is reduced, and the vibration reducing cost is regularly reduced.
In this embodiment, as shown in fig. 3 and fig. 4, a plurality of whistle 7 runs through baffle 4 and microperforated panel 5, the inlet end and the ventilation chamber 8 intercommunication of whistle 7, the end and the deashing cavity 10 intercommunication of giving vent to anger of whistle 7, when ventilating in ventilation chamber 8, the air current gets into whistle 7, make whistle 7 sound production, the end of giving vent to anger of whistle 7 is as the sound source, it sends the sound that has certain loudness in the deashing cavity 10, can drive light filter screen 6 after the sound propagates to light filter screen 6 and rock, thereby shake away the dust adsorbed on the light filter screen 6, accomplish light filter screen 6 cleaning operation, saved the manual work and demolishd light filter screen 6 and carry out clean trouble, lasting keep light filter screen 6 clean and tidy, prevent that light filter screen 6 from influencing train wind channel damping noise reduction performance because of adsorbing a large amount of dust.
In this embodiment, when the air conditioning and ventilation system works normally, the air conditioning air generated by the air conditioning and ventilation system flows in the air delivery cavity 13 and is delivered to each compartment, and then is injected into the compartment through the air outlet duct 11 to adjust the temperature in the compartment, and the flow direction of the air flow is shown in fig. 5.
In this embodiment, preferably, when the light filter screen 6 needs to be cleaned, the air flow in the air duct of the train is reversed, as shown in fig. 6, at this time, the air in the carriage is sucked into the air delivery cavity 13 through the air outlet duct 11 and then discharged outside the carriage, then high-pressure air is injected into the ventilation cavity 8, the whistle 7 is driven by the high-pressure air to sound to cause the light filter screen 6 to vibrate, dust on the light filter screen 6 is shaken off, and the fallen dust is discharged outside the carriage along with the air flow in the air delivery cavity 13, so that the cleaning method of the light filter screen 6 can ensure that the dust falling on the light filter screen 6 cannot be injected into the carriage through the air outlet duct 11, ensure that the air in the carriage is clean, avoid causing discomfort to passengers in the carriage, and clean the light filter screen 6 according to the needs at any time and without worry about influencing passengers in the carriage.
Preferably, the whistle 7 is not contacted with the light filter screen 6, so that the design is adopted, when the air-conditioning ventilation system works normally, air-conditioning air generated by the air-conditioning ventilation system flows in the air conveying cavity 13 and is conveyed to each carriage, in the process, the light filter screen 6 can be effectively protected by the design that the whistle 7 is not contacted with the light filter screen 6, the air-conditioning air generated by the air-conditioning ventilation system can be prevented from flowing in the air conveying cavity 13 to drive the light filter screen 6 to shake and continuously strike the whistle 7 to cause the damage of the light filter screen 6, after all, the light filter screen 6 is soft in texture and light and thin, and the air flow in the air conveying cavity 13 can disturb the continuous shake of the light filter screen 6.
In this embodiment, as shown in fig. 3 and fig. 4, the light filter screen 6 is provided with a first through hole 12, the first through hole 12 is communicated with the air outlet channel 11 through a third mounting ring 61, the third mounting ring 61 is coaxial with the air outlet channel 11, one end of the third mounting ring 61 is fixedly connected with the first through hole 12 in a sealing manner, the other end of the third mounting ring is fixedly connected with the air outlet channel 11 in a sealing manner, and the third mounting ring 61 and the light filter screen 6 are the same in material, so that the light filter screen 6 extends to the air outlet channel 11, separates the ash removing cavity 10 from the air outlet channel 11, effectively prevents dust in the air outlet channel 11 from bypassing the light filter screen 6 and entering the ash removing cavity 10, and simultaneously enables air flow in the air conveying cavity 13 to flow out of and be injected into a carriage through the air outlet channel 11 smoothly.
In this embodiment, as shown in fig. 3 and fig. 4, the second through hole is disposed on the microperforated panel 5, the second through hole is coaxial with the first through hole 12, the aperture of the second through hole is larger than that of the first through hole 12, the second mounting ring 51 is disposed on the outer coaxial spacer sleeve of the third mounting ring 61, one end of the second mounting ring 51 is fixedly connected with the second through hole in a sealing manner, the other end of the second mounting ring is fixedly connected with the bottom plate 2 in a sealing manner, the second mounting ring 51 and the microperforated panel 5 are the same in material, and the design is equivalent to that the microperforated panel 5 and the ash removing cavity 10 extend to the bottom plate 2, so that the sound absorbing cavity 9 is separated from the air outlet duct 11, dust in the air outlet duct 11 is prevented from entering the sound absorbing cavity 9, and meanwhile the microperforated panel 5 is fixedly connected with the bottom plate 2, so that the microperforated panel 5 is fixedly mounted in the air duct of a train, and is kept relatively fixed with the partition plate 4 and is arranged at intervals with the partition plate 4.
In this embodiment, as shown in fig. 3 and fig. 4, the partition board 4 is provided with a third through hole, the third through hole and the second through hole are coaxial, the aperture of the third through hole is larger than that of the second through hole, a first mounting ring 41 is sleeved outside the second mounting ring 51 in a coaxial and spaced manner, one end of the first mounting ring 41 is fixedly connected with the third through hole in a sealing manner, the other end of the first mounting ring is fixedly connected with the bottom board 2 in a sealing manner, the first mounting ring 41 and the partition board 4 are identical in material, and the design corresponds to that the partition board 4 and the sound absorption cavity 9 extend to the bottom board 2, and the sound absorption cavity 9 and the ventilation cavity 8 are separated, so that the ventilation cavity 8 and the sound absorption cavity 9 are not communicated with each other, and meanwhile, the partition board 4 is fixedly connected with the bottom board 2, so that the partition board 4 is fixedly mounted in a train air duct, and kept relatively fixed with the micropunch board 5 and arranged at intervals with the upper cover 1 and the bottom board 2.
In this embodiment, further, as shown in fig. 3, the ash removal cavity 10 is provided with a pillar 14, two ends of the pillar 14 are fixedly connected with the light filter screen 6 and the microperforated panel 5, the light filter screen 6 is fixed in the elongated cavity three through a plurality of pillars 14 and is arranged at intervals with the microperforated panel 5, the light filter screen 6 can be effectively fixed by the existence of a plurality of pillars, the amplitude of shaking caused by the air flow in the air delivery cavity 13 is reduced, the air delivery cavity is further prevented from colliding with the whistle 7, the safety of the whistle is effectively protected, and in addition, the existence of the pillars also facilitates the installation and the fixation of the light filter screen 6 in the elongated cavity three and is arranged at intervals with the microperforated panel 5.
In this embodiment, the plurality of posts 14 and whistles 7 are preferably uniformly distributed on the microperforated panel 5, and the design is advantageous for firmly fixing the lightweight filter screen 6 and sufficiently cleaning the lightweight filter screen 6, so that the cleaning effect is good and no dead zone is left for cleaning.
The train wind channel damping noise reduction device of this embodiment utilizes micropunching board 5 cooperation to inhale the sound cavity 9 and absorbs the train wind channel to realize the purpose of damping noise reduction, set up light filter screen 6 and carry out the separation filtration to the dust, prevent that the enrichment from blockking up micropunching board 5's microperforated hole on micropunching board 5 from reducing the damping noise reduction performance of train wind channel damping noise reduction device of this embodiment, realize that micropunching board 5 can durable not change, long service life, and is with low costs, in addition, utilize whistle 7 to send out sound to drive light filter screen 6 vibration again, shake off the dust on the light filter screen 6 outside the carriage along with the air current, this kind of light filter screen 6 clean mode has saved the manual work and has demolishd the trouble that light filter screen 6 in the train wind channel carries out the cleanness, labour saving and time saving has guaranteed that light filter screen 6 does not take place to block up, ensure that train wind channel damping noise reduction device can keep high-efficient damping noise reduction performance can durable not descend.
In addition, the invention also provides an air conditioner ventilation system which comprises a train air duct and the train air duct vibration and noise reduction device, wherein the train air duct vibration and noise reduction device can greatly reduce the noise of the train air duct, and meanwhile, the micro-perforated plate 5 is not required to be frequently replaced and the light filter screen 6 is not required to be detached for cleaning, so that the air conditioner ventilation system is time-saving and labor-saving, low in use cost and good in feasibility.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. The train air duct vibration and noise reduction device is characterized by being arranged in a train air duct, wherein the train air duct comprises an upper cover with two bent long sides and a bottom plate connected with the two long sides of the upper cover, a long-strip-shaped cavity I is formed between the bottom plate and the upper cover in a surrounding mode, and a plurality of air outlet ducts communicated with the long-strip-shaped cavity I are arranged on the bottom plate in a penetrating mode;
the train air duct vibration and noise reduction device comprises:
The partition plate is arranged in the first strip-shaped cavity and is arranged at intervals with the upper cover and the bottom plate, so that a ventilation cavity is defined between the partition plate and the upper cover as well as between the partition plate and the bottom plate, and a second strip-shaped cavity is defined on the inner side of the partition plate;
The microperforated panel is arranged in the second strip-shaped cavity and is arranged at intervals with the partition plate, so that a sound absorption cavity is defined between the microperforated panel and the partition plate, and the inner side of the microperforated panel defines a third strip-shaped cavity;
The light filter screen is arranged in the strip-shaped cavity III and is arranged at intervals with the microperforated panel, so that an ash removing cavity is defined between the light filter screen and the microperforated panel, and the inner side of the light filter screen is defined with an air delivery cavity;
The whistle penetrates through the partition plate and the microperforated panel, the air inlet end of the whistle is communicated with the ventilation cavity, and the air outlet end of the whistle is communicated with the ash removal cavity;
the whistle is not contacted with the light filter screen;
The light filter screen is provided with a first through hole, the first through hole is communicated with the air outlet channel through a third mounting ring, the third mounting ring is coaxial with the air outlet channel, one end of the third mounting ring is fixedly connected with the first through hole in a sealing mode, and the other end of the third mounting ring is fixedly connected with the air outlet channel in a sealing mode.
2. The vibration and noise reduction device for the train air duct of claim 1, wherein the micro-perforated plate is provided with a second through hole, the second through hole is coaxial with the first through hole, and the aperture of the second through hole is larger than that of the first through hole;
the third outer coaxial spacer sleeve of the mounting ring is provided with a second mounting ring, one end of the second mounting ring is fixedly connected with the second through hole in a sealing mode, and the other end of the second mounting ring is fixedly connected with the bottom plate in a sealing mode.
3. The vibration and noise reduction device for the train air duct of claim 2, wherein a third through hole is formed in the partition plate, the third through hole is coaxial with the second through hole, and the aperture of the third through hole is larger than that of the second through hole;
The outer coaxial spacer sleeve of installing ring is equipped with the installing ring one, the sealed fixed connection through-hole three of one end of installing ring one, the sealed fixed connection bottom plate of the other end.
4. A vibration and noise reduction device for a train air duct according to claim 3, wherein the first mounting ring is made of the same material as the partition plate, the second mounting ring is made of the same material as the microperforated plate, and the third mounting ring is made of the same material as the light filter screen.
5. The vibration and noise reduction device for the train air duct of claim 1, wherein the ventilation cavity and the sound absorption cavity are not communicated with each other.
6. The train air duct vibration and noise reduction device according to claim 1, wherein the dust removal cavity is provided with a pillar, two ends of the pillar are connected with a light filter screen and a microperforated panel, and the light filter screen is fixed in the elongated cavity III through a plurality of pillars and is arranged at intervals with the microperforated panel.
7. The vibration and noise reduction apparatus for a train wind tunnel of claim 6 wherein the plurality of struts and whistles are evenly distributed on the microperforated panel.
8. An air conditioning ventilation system comprising a train air duct and a train air duct vibration and noise reduction device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311605102.1A CN117565910B (en) | 2023-11-29 | 2023-11-29 | Train wind channel damping noise reduction device and air conditioner ventilation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311605102.1A CN117565910B (en) | 2023-11-29 | 2023-11-29 | Train wind channel damping noise reduction device and air conditioner ventilation system |
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| CN117565910A CN117565910A (en) | 2024-02-20 |
| CN117565910B true CN117565910B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311605102.1A Active CN117565910B (en) | 2023-11-29 | 2023-11-29 | Train wind channel damping noise reduction device and air conditioner ventilation system |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203228783U (en) * | 2013-01-31 | 2013-10-09 | 唐山轨道客车有限责任公司 | Noise reduction air channel and railway carriage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206642494U (en) * | 2017-04-01 | 2017-11-17 | 杭州菲龙环境技术有限公司 | Interior filter suction type dust arrester |
| CN111976766B (en) * | 2020-08-21 | 2023-04-07 | 中车株洲电力机车有限公司 | Air conditioner air duct for rail transit vehicle |
| CN113928358A (en) * | 2021-11-05 | 2022-01-14 | 中车株洲电力机车有限公司 | Low-noise air conditioner air duct of railway passenger car |
| CN115214733A (en) * | 2022-06-21 | 2022-10-21 | 中车长春轨道客车股份有限公司 | Broadband rail train air conditioner air duct vibration and noise reduction device |
| CN218021614U (en) * | 2022-09-27 | 2022-12-13 | 湖南联诚轨道装备有限公司 | Ventilation structure for railway locomotive |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203228783U (en) * | 2013-01-31 | 2013-10-09 | 唐山轨道客车有限责任公司 | Noise reduction air channel and railway carriage |
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| CN117565910A (en) | 2024-02-20 |
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