CN209096723U - A kind of train air-conditioning active noise reduction distributor box - Google Patents
A kind of train air-conditioning active noise reduction distributor box Download PDFInfo
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- CN209096723U CN209096723U CN201821773881.0U CN201821773881U CN209096723U CN 209096723 U CN209096723 U CN 209096723U CN 201821773881 U CN201821773881 U CN 201821773881U CN 209096723 U CN209096723 U CN 209096723U
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Abstract
A kind of train air-conditioning active noise reduction distributor box, including distributor box ontology, loudspeaker, several error microphones and controller, the distributor box ontology includes inlet section and at least two outlet sections, the air intake of each outlet section connects the outlet air end of the inlet section, the quantity of the error microphone and the quantity of the outlet section are consistent, the loudspeaker is arranged on the outer wall of the inlet section, one error microphone is correspondingly arranged on the outer wall of an outlet section, the controller is separately connected the loudspeaker and error microphone by signal wire, there are several through-holes on the wall surface of the inlet section and loudspeaker contact, the wall surface of the outlet section and error microphone contact is equipped with several through-holes.The train air-conditioning active noise reduction distributor box completes active noise reduction between the outlet of air-conditioner host and the entrance in wind-distributing pipe road, has completely cut off air-conditioner host noise along the approach of wind-distributing pipe road disperse.
Description
Technical field
The utility model relates to active noise reduction techniques, in particular to a kind of train air-conditioning active noise reduction distributor box.
Background technique
With the progress and the improvement of people's living standards of modern society, the problem of noise pollution, becomes increasingly conspicuous, wherein logical
Air pipe line system noise is common noise source, such as central air conditioner system air outlet, the radiation of ship's ventilating system entry/exit air port
Sound etc..With the development of train technical, the requirement to passenger comfort is higher and higher, controls air conditioning pipe system nozzle on train
Radiated noise has great importance to passenger comfort is improved.
Air-conditioning duct noise mainly includes air-conditioning draught fan noise and the quadratic noise that air flowing generates, and wherein air flows
The quadratic noise of generation can obtain preferable noise reduction effect by passive absorb sound on wind-distributing pipe road, and air-conditioning draught fan noise due to
Its low frequency noise component is more, and the passive sound absorption method on wind-distributing pipe road is undesirable to low-frequency noise noise reduction effect, causes in compartment
The main noise source in portion is from air-conditioning draught fan noise.
The Chinese patent of Patent No. ZL201310184657.3 filed on May 17th, 2013 discloses a kind of for leading to
The active silencer of air pipe line system proposes that loudspeaker unit, error pick-up unit is arranged in the outer wall of air pipeline and raises
The components such as sound device power amplifier board constitute the active silencer, but the active silencer structure has following ask
Topic: 1. constitute the components such as loudspeaker unit, error pick-up unit and the loudspeaker power amplifier board of active silencer
It needs to be mounted on outside the ventilation duct, there is no enough spaces to realize for the pipeline of train air conditioning system, to realize
Need to change the overall construction design of train；2. error pick-up described in is necessarily placed at the downstream of loudspeaker, i.e. target drops
It makes an uproar position, is just able to achieve active noise reduction effect, i.e., arrange loudspeaker in ducts upstream, open several independent outlet air in pipe downstream
Mouth simultaneously arranges an error microphone in each air outlet, in this way could control the radiated noise at air outlet, to control
Overall noise in compartment processed is horizontal.This air-out mode will lead to that cloth wind is uneven, the seat air quantity below air outlet
It is not suitable for very much passenger's seating greatly.The wind-distributing pipe road of compartment is not provided with air outlet to obtain uniform cloth wind effect, but
By the side in entire wind-distributing pipe road or bottom surface be made into perforation it is netted, then cooperate pipeline section product variation form even distributing wind.This
Kind cloth wind mode can not be using the active silencer for being used for air pipeline system.
Train air-conditioning wind-distributing pipe road is installed on car body top, due to space, the pressure loss, cloth wind uniformity etc., leads
To cause that there are structures in wind-distributing pipe road narrow, pipeline section is uneven, is unfavorable for active noise reduction techniques without air outlet being independently distributed etc.
The factor of application, therefore designing a kind of silencing apparatus using active noise reduction techniques and applying in train air-conditioning pipe-line system is one
A urgent problem to be solved.
Utility model content
The purpose of the utility model is to provide a kind of train air-conditioning active noise reduction distributor boxes, for reducing train air-conditioning pipeline
Noise improves the comfort of passenger.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is:
A kind of train air-conditioning active noise reduction distributor box, including distributor box ontology, loudspeaker, several error microphones and control
Device, the distributor box ontology include inlet section and at least two outlet sections, the air intake connection of each outlet section it is described into
The quantity of the outlet air end in wind portion, the quantity of the error microphone and the outlet section is consistent, and the loudspeaker setting exists
On the outer wall of the inlet section, an error microphone is correspondingly arranged on the outer wall of an outlet section, the control
Device processed is separately connected the loudspeaker and each error microphone by signal wire, what the inlet section and the loudspeaker contacted
There are several through-holes on wall surface, the wall surface that the outlet section and the error microphone contact is equipped with several through-holes.
Preferably, the diameter of the through-hole on the wall surface of the inlet section and loudspeaker contact is not more than 2mm,
Via densities on the wall surface of the inlet section and loudspeaker contact are not less than 25%.
Preferably, the diameter of the through-hole on the wall surface of the outlet section and error microphone contact is not more than
Via densities on the wall surface of 2mm, the outlet section and error microphone contact are not less than 25%.
Preferably, the error microphone includes vibrating diaphragm and the shell around vibrating diaphragm setting, the shell includes
Inner and outer wall is filled with sound-proof material between the inner and outer wall.
Preferably, several through-holes are arranged on the inner wall wall surface between the vibrating diaphragm and the outlet section.
Preferably, the diameter of the through-hole on the inner wall wall surface is not more than 2mm, the via densities on wall surface are not low
In 25%.
Preferably, the air intake of the inlet section is arranged in the loudspeaker, the error microphone is arranged described
The outlet air end of outlet section.
Preferably, the joint of the loudspeaker and the inlet section is sealed using sealing ring.
Preferably, the joint of the error microphone and the outlet section is sealed using sealing ring.
Compared with prior art, the utility model has the advantage that train air-conditioning active noise reduction described in the utility model
Distributor box, including distributor box ontology, loudspeaker, several error microphones and controller, the loudspeaker are arranged in the distribution
The air outlet of the distributor box ontology is arranged in the air inlet of case ontology, the error microphone, and the train air-conditioning actively drops
Distributor box of making an uproar completes active noise reduction between the outlet of air-conditioner host and the entrance in wind-distributing pipe road, has completely cut off air-conditioner host noise edge
The approach of wind-distributing pipe road disperse, while not influencing the effect of even distributing wind again, the train air-conditioning active noise reduction distributor box knot
Structure is compact, integrated design, can directly install in air-conditioning system, the feasibility with practical application.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit in any way disclosed by the utility model
Range.In addition, shape and proportional sizes of each component in figure etc. are only schematically, to be used to help the reason to the utility model
Solution is not the specific shape and proportional sizes for limiting each component of the utility model.Those skilled in the art is practical new at this
Under the introduction of type, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.Attached
In figure:
Fig. 1 is the structural schematic diagram of the train air-conditioning active noise reduction distributor box of one specific embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the error microphone of one specific embodiment of the utility model.
It is as shown in the figure: 1- distributor box, the inlet section 11-, the outlet section 12-, 2- loudspeaker, 3- error microphone, 31- vibrating diaphragm,
321- inner wall, 322- outer wall, 323- sound-proof material, 4- controller.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the utility model, below in conjunction with this reality
With the attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
The range of the utility model protection all should belong in example.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more related listed items.
Referring to Figure 1 and Fig. 2, a kind of train air-conditioning active noise reduction distributor box, if including distributor box ontology 1, loudspeaker 2,
Dry error microphone 3 and controller 4, the distributor box ontology 1 includes inlet section 11 and at least two outlet sections 12, each described
The air intake of outlet section 12 connects the outlet air end of the inlet section 11, and the setting of the outlet section 12 is selected according to train actual conditions
It selects, in the present embodiment, there are two the outlet section 12 is set, the quantity of the error microphone 3 and the quantity of the outlet section 12
It is consistent, the loudspeaker 2 is arranged on the outer wall of the inlet section 11, and an error microphone 3 is correspondingly arranged at
On the outer wall of one outlet section 12, the controller 4 is separately connected the loudspeaker 2 by signal wire and each error passes
There are several through-holes, the outlet section 12 and the error on the wall surface that sound device 3, the inlet section 11 and the loudspeaker 2 contact
The wall surface that microphone 3 contacts is equipped with several through-holes, it is therefore an objective to realize and carry out water conservancy diversion, suppression to the air-flow in pipeline while entrant sound
Make the quadratic noise given birth to by high-speed air flow movable property.It is described logical on the wall surface that the inlet section 11 and the loudspeaker 2 contact
The diameter in hole is not more than 2mm, and the via densities on wall surface that the inlet section 11 and the loudspeaker 2 contact are not less than 25%.
The diameter for the through-hole on wall surface that the outlet section 12 and the error microphone 3 contact is not more than 2mm, the outlet section
12 and the error microphone 3 contact wall surface on via densities be not less than 25%, the diameter and density of through-hole can be according to wind
Speed carries out practical adjustment.The air intake of the inlet section 11 is arranged in the loudspeaker 2, and the error microphone 3 is arranged in institute
State the outlet air end of outlet section 12.The joint of the loudspeaker 2 and the inlet section 11 is sealed using sealing ring.The error passes
The joint of sound device 3 and the outlet section 12 is sealed using sealing ring.
The error microphone 3 includes vibrating diaphragm 31 and the shell around the vibrating diaphragm 31 setting, the section of the vibrating diaphragm 31
For circle, the shell is cylindrical housings, and the shell includes inner wall 321 and outer wall 322, the inner wall 321 and outer wall 322
Between be filled with sound-proof material 323.If being arranged on 321 wall surface of the inner wall between the vibrating diaphragm 31 and the outlet section 12
Dry through-hole, it is therefore an objective to water conservancy diversion be carried out to the air-flow in pipeline while realizing entrant sound, inhibit given birth to by high-speed air flow movable property two
Secondary noise, the diameter of the through-hole on 321 wall surface of inner wall are not more than 2mm, and the via densities on wall surface are not less than 25%.
The controller 4 is the multichannel active controller based on eight core dsp chip of TMS320C6678, built-in adaptive
Algorithm of Active Control.Controller 4 includes that 16 tunnel A/D modules, 16 tunnel D/A modules, 8 railway digital amount input modules and 8 railway digital amounts are defeated
The hardware structure system of module out can be realized the data acquisition of 16 channel measurement signals and 8 tunnel reference signals, and can be according to calculation
Method carries out parallel processing to acquisition data, and the control signal in 16 channel of final output in the present embodiment, executes machine to executing agency
Structure is loudspeaker 2, is monitored in real time to control channel, and control channel is distributor box ontology 1 in embodiment, it is convenient to control effect into
Row analysis, and there is various control warning function.
The working method of the train air-conditioning active noise reduction distributor box is as follows: the distributor box ontology 1 is by upstream air-conditioning master
The air-flow of machine output is oriented to the wind-distributing pipe road that two different directions enter downstream by the distributor box ontology 1.Air-conditioner host
Low-frequency noise enter the distributor box ontology 1 from the inlet section 11, and as air-flow wind-distributing pipe road downstream is propagated.?
The 3 real-time monitoring noise signal of error microphone of 12 position of outlet section, and the controller 4 is transmitted a signal to, it is described
Controller 4 forms control signal by built-in Algorithm of Active Control operation and is transmitted to the loudspeaker 2, the loudspeaker 2
Emission control sound wave offsets from the inlet section 11 and comes into the noise come so that the noise of 12 position of outlet section is inhibited.
The noise of 12 position of outlet section would not be toward the wind-distributing pipe road borne noise in downstream, so that entire vehicle after being controlled
The noise level in compartment reduces, and realizes the active noise controlling of train air-conditioning host.
Train air-conditioning pipe-line system is arranged between air-conditioner host and wind-distributing pipe road is assigned to each cloth wind for air conditioning air flow
The distributor box of pipeline, distributor box are located at the upstream entrance in wind-distributing pipe road and the outlet port of air-conditioner host.On train, using described
Train air-conditioning active noise reduction distributor box completes active noise reduction between the outlet of air-conditioner host and the entrance in wind-distributing pipe road, isolation
Approach of the air-conditioner host noise along the disperse of wind-distributing pipe road, while not influencing the effect of even distributing wind again, realize low-frequency noise
Control.The train air-conditioning active noise reduction distributor box is compact-sized, can be directly mounted at existing train composition, solves existing
Active control technology, with body construction, the conflicting problem of cloth wind uniformity, is improved when train air-conditioning pipe-line system is applied
The riding comfort of passenger.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be apparent for a person skilled in the art
's.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to preceding claims and these
The full scope of the equivalent that claim is possessed determines.For comprehensive purpose, all articles and with reference to including patent
The disclosure of application and bulletin is all by reference to being incorporated herein.Appointing for theme disclosed herein is omitted in preceding claims
Where face is not intended to abandon the body matter, also should not be considered as applicant and the theme is not thought of as to disclosed reality
With a part of novel theme.
Claims (7)
1. a kind of train air-conditioning active noise reduction distributor box, which is characterized in that passed including distributor box ontology, loudspeaker, several errors
Sound device and controller, the distributor box ontology include inlet section and at least two outlet sections, the air intake of each outlet section
Connect the outlet air end of the inlet section, the quantity of the quantity of the error microphone and the outlet section is consistent, described to raise
Sound device is arranged on the outer wall of the inlet section, and an error microphone is correspondingly arranged at the outer wall of an outlet section
On, the controller is separately connected the loudspeaker and error microphone, the inlet section and the loudspeaker by signal wire
There are several through-holes on the wall surface of contact, the wall surface that the outlet section and the error microphone contact is equipped with several through-holes.
2. train air-conditioning active noise reduction distributor box according to claim 1, which is characterized in that the error microphone includes
Vibrating diaphragm and around the vibrating diaphragm setting shell, the shell includes inner and outer wall, between the inner and outer wall filling every
Sound cotton.
3. train air-conditioning active noise reduction distributor box according to claim 2, which is characterized in that be located at the vibrating diaphragm and described
Several through-holes are set on the inner wall wall surface between outlet section.
4. train air-conditioning active noise reduction distributor box according to claim 3, which is characterized in that the institute on the inner wall wall surface
The diameter for stating through-hole is not more than 2mm, and the via densities on wall surface are not less than 25%.
5. train air-conditioning active noise reduction distributor box according to claim 1, which is characterized in that the loudspeaker is arranged in institute
The air intake of inlet section is stated, the outlet air end of the outlet section is arranged in the error microphone.
6. train air-conditioning active noise reduction distributor box according to claim 1, which is characterized in that the loudspeaker and it is described into
The joint in wind portion is sealed using sealing ring, and the joint of the error microphone and the outlet section is sealed using sealing ring.
7. train air-conditioning active noise reduction distributor box according to claim 1, which is characterized in that the outlet section and the mistake
The diameter of the through-hole on the wall surface of poor microphone contact is not more than 2mm, the outlet section and error microphone contact
Wall surface on via densities be not less than 25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821773881.0U CN209096723U (en) | 2018-10-30 | 2018-10-30 | A kind of train air-conditioning active noise reduction distributor box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821773881.0U CN209096723U (en) | 2018-10-30 | 2018-10-30 | A kind of train air-conditioning active noise reduction distributor box |
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| Publication Number | Publication Date |
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| CN209096723U true CN209096723U (en) | 2019-07-12 |
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| CN201821773881.0U Active CN209096723U (en) | 2018-10-30 | 2018-10-30 | A kind of train air-conditioning active noise reduction distributor box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843831A (en) * | 2019-11-18 | 2020-02-28 | 中科振声（苏州）电子科技有限公司 | Distribution box, air conditioner pipe system and air conditioner of making an uproar fall |
| WO2020088547A1 (en) * | 2018-10-30 | 2020-05-07 | 中科振声（苏州）电子科技有限公司 | Active noise reduction distribution box, air conditioner pipeline system, and air conditioner |
| CN115512677A (en) * | 2022-08-16 | 2022-12-23 | 广州精益运输制冷设备有限公司 | Noise-reduction air distribution device for rail train air conditioner |
-
2018
- 2018-10-30 CN CN201821773881.0U patent/CN209096723U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088547A1 (en) * | 2018-10-30 | 2020-05-07 | 中科振声（苏州）电子科技有限公司 | Active noise reduction distribution box, air conditioner pipeline system, and air conditioner |
| CN110843831A (en) * | 2019-11-18 | 2020-02-28 | 中科振声（苏州）电子科技有限公司 | Distribution box, air conditioner pipe system and air conditioner of making an uproar fall |
| WO2021098331A1 (en) * | 2019-11-18 | 2021-05-27 | 中科振声（苏州）电子科技有限公司 | Noise reduction distribution box, air conditioner pipeline system and air conditioner |
| CN115512677A (en) * | 2022-08-16 | 2022-12-23 | 广州精益运输制冷设备有限公司 | Noise-reduction air distribution device for rail train air conditioner |
| CN115512677B (en) * | 2022-08-16 | 2023-10-10 | 广州精益运输制冷设备有限公司 | Noise-reducing and wind-distributing device for air conditioner of rail train |
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