CN206278107U - Railcar sends air duct noise-reducing optimization system back to - Google Patents
Railcar sends air duct noise-reducing optimization system back to Download PDFInfo
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- CN206278107U CN206278107U CN201621265294.1U CN201621265294U CN206278107U CN 206278107 U CN206278107 U CN 206278107U CN 201621265294 U CN201621265294 U CN 201621265294U CN 206278107 U CN206278107 U CN 206278107U
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- air
- valve block
- transition passage
- noise
- air duct
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Abstract
Air duct noise-reducing optimization system is sent back to the utility model discloses railcar, air-supply unit including being sequentially communicated into loop, transition passage, main air duct, compartment and air -return duct, transition passage includes housing, the first valve block and the second valve block in housing, housing and the first valve block, space between second valve block and the space between the first valve block and the second valve block form three layers of air inlet and three layers of air outlet near main air duct near air-supply unit altogether, bent and for changing air flow direction in the middle of first valve block and the second valve block, the size of air inlet is more than air outlet and has taper.By adjusting air inlet and air outlet between the first valve block and the second valve block, air-flow is gently entered transition passage, reduce the noise that airflow strikes transition passage and turbulent flow are produced, be finally substantially lowered into the noise in compartment.This utility model is used for airduct air channel field.
Description
Technical field
The utility model is related to air channel airduct field, and more particularly to a kind of railcar sends air duct noise-reducing optimization system back to
System.
Background technology
The source of subway train noise has, air conditioner of subway vehicle units' installation motion rail vehicle on, at a high speed
Motion and vibratory impulse state, vibration produce noise；Rail vehicle air conditioner group is huge in compartment when high temperature environment refrigerating runs
Big refrigeration demand needs powerful compressor, compressor to produce noise；Huge refrigeration demand needs the wind of more Wind Volume
Machine, but Wind Volume also brings big noise.
Air conditioner of subway vehicle unit is typically mounted on car body top, belongs to integrated air conditioner unit, the noise that air-conditioning is produced
Compartment is passed to easily by main air duct and air -return duct, and then has influence on interior environmental amenity degree.
Utility model content
The purpose of this utility model is to provide a kind of railcar of effective noise reduction function to send air duct noise-reducing optimization system back to
System.
Technical solution adopted in the utility model is：
Railcar sends air duct noise-reducing optimization system, including air-supply unit, transition passage, the master for being sequentially communicated into loop back to
Air channel, compartment and air -return duct.Transition passage includes housing, the first valve block and the second valve block in housing, housing and the
Space between one valve block, the second valve block and the space between the first valve block and the second valve block form three layers near pressure fan altogether
The air inlet and three layers of air outlet near main air duct of group, bend and for changing air-flow in the middle of the first valve block and the second valve block
Flow direction, the size of air inlet is more than air outlet and with taper.
It is further used as the improvement of above-mentioned technical proposal, the port of the first valve block of air inlet and the transition of nearest side
The distance of channel outer wall is 75~85mm, the distance of the port of the second valve block and the transition passage outer wall of nearest side for 75~
85mm, the height between the valve block of air inlet first and the second valve block is 120~140mm.
The improvement of above-mentioned technical proposal is further used as, the port of the first valve block at air outlet and the transition of nearest side
The distance of channel outer wall is 100~110mm, the port of the second valve block at air outlet and the transition passage outer wall of nearest side
Distance is 100~110mm, and the height at air outlet between the first valve block and the second valve block is 45~65mm.
The improvement of above-mentioned technical proposal is further used as, main air duct is provided with the meshed water conservancy diversion of tool on its two side
Plate, the interlayer between two deflectors and corresponding side wall is provided with acoustical cotton.
The improvement of above-mentioned technical proposal is further used as, main air duct is provided with circular arc dividing plate, circular arc in the corner of air-flow
The edge of dividing plate windward side has wedge angle.
The improvement of above-mentioned technical proposal is further used as, the entrance of air -return duct has at arc transition, at arc transition
Entrance of the horizontal length more than air -return duct.
The beneficial effects of the utility model：This railcar send back to air duct noise-reducing optimization system by adjust the first valve block and
Air inlet and air outlet between second valve block, enable air-flow gently to enter transition passage, reduce airflow strikes transition passage
The noise produced with turbulent flow, is finally substantially lowered into the noise in compartment.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the ducting system figure of the utility model embodiment；
Fig. 2 is the transition passage outside drawing of the utility model embodiment；
Fig. 3 is the new transition passage profile of the utility model embodiment；
Fig. 4 is the old transition passage profile of the utility model embodiment；
Fig. 5 is the main air duct profile of the utility model embodiment；
Fig. 6 is the old air -return duct profile of the utility model embodiment；
Fig. 7 is the new air -return duct profile of the utility model embodiment.
Specific embodiment
Reference picture 1, the utility model sends air duct noise-reducing optimization system back to for railcar, including is sequentially communicated into loop
Air-supply unit 1, transition passage 2, main air duct 3, compartment 4 and air -return duct 5.The improvement of the present embodiment is in transition passage 2, main air duct
3 and air -return duct 5.From Fig. 3 and Fig. 4, whole transition passage 2 horizontal length is about 198mm, height and is about 315mm, surrounding
Skew wall is 130 °~168 ° with the angle of horizontal plane.
2~Fig. 4 of reference picture, transition passage 2 includes housing 25, the first valve block 21 and the second valve block in housing 25
Continuous arrow represents air flow direction in 22, Fig. 3 and Fig. 4.The outer wall of transition passage 2 is not made an amendment, its overall dimensions such as Fig. 4.It is former
The first valve block 21 and the second valve block 22 in design are not only parallel to each other but also the outer wall with transition passage both sides about 2 is put down simultaneously
OK；From the angle observation of air-supply unit 1, have when air-flow flows through the first valve block 21, the second valve block 22 and 2 bottom of transition passage compared with
Big angle of reflection, generates excessive impact.
By improving, space and the first valve block 21 and second between the valve block 21 of housing 25 and first, the second valve block 22
Space between valve block 22 forms three layers of air inlet 23 and three layers of air outlet 24 near main air duct 3 near air-supply unit 1 altogether,
Bent in the middle of first valve block 21 and the second valve block 22 and for changing air flow direction, the size of air inlet 23 is more than air outlet 24
And with taper.It is gentle from the transition of 21 and second valve block of the first valve block 22, shunting, guide functions are played, make airflow more
It is unobstructed, air-flow turbulization in air channel is reduced, reduce noise.
As preferred embodiment, the port of the first valve block 21 at air inlet 23 and the transition passage 2 of nearest side
The distance of outer wall is 75~85mm, the distance of the port of the second valve block 22 and the outer wall of transition passage 2 of nearest side for 75~
85mm, the height at air inlet 23 between first valve block 21 and the second valve block 22 is 120~140mm.
The distance of the port of the first valve block 21 at air outlet 24 and the outer wall of transition passage 2 of nearest side for 100~
110mm, the distance of the port of the second valve block 22 at air outlet 24 and the outer wall of transition passage 2 of nearest side for 100~
110mm, the height at air outlet 24 between first valve block 21 and the second valve block 22 is 45~65mm.
Reference picture 5, main air duct 3 is provided with the meshed deflector 31 of tool on its left and right sides wall, two deflectors 31 with
Interlayer between corresponding side wall is provided with acoustical cotton 32, and the incoming acoustical cotton 32 of sound is easy in the design of mesh.
Main air duct 3 is provided with circular arc dividing plate in the corner of air-flow, reduces the turbulent flow that air-flow is formed in corner；Circular arc every
The edge of plate windward side has wedge angle, increases the mobility of air-flow.
Reference picture 6 and Fig. 7, continuous arrow represent air flow direction, and the air intake vent size of air -return duct 5 is big in original design, air-flow
Resilience after the impact upper wall of air -return duct 5, had both generated a large amount of noises, and air-flow velocity is weakened again, i.e., see from left to right, near left side
Air-flow velocity it is small, the air-flow velocity near middle and right side is big.
Used as preferred embodiment, the entrance of air -return duct 5 has at arc transition；The entrance of air -return duct 5 is reduced simultaneously
Size, the horizontal length for making its width be slightly less than at above-mentioned arc transition, so as to air-flow from arc transition water conservancy diversion air entering and returning road 5,
So as to reduce return air noise.
By the combination of such scheme, the air-supply noise of transition passage 2 and main air duct 3 about drops to 61.9dB from 65.1dB,
The noise of air -return duct 5 is about reduced to 61.6dB from 63.9dB.From size, noise has obtained obvious improvement；Simultaneously, solution
Determined in air channel, the problem that low frequency range noise value is higher.
Certainly, the design is created and is not limited to above-mentioned implementation method, and those of ordinary skill in the art are without prejudice to originally
Equivalent variations or replacement can be also made on the premise of utility model spirit, these equivalent modifications or replacement are all contained in the application
In claim limited range.
Claims (6)
1. railcar sends air duct noise-reducing optimization system back to, it is characterised in that：Air-supply unit including being sequentially communicated into loop
（1）, transition passage（2）, main air duct（3）, compartment（4）And air -return duct（5）, the transition passage（2）Including housing（25）, install
In housing（25）The first interior valve block（21）With the second valve block（22）, the housing（25）With the first valve block（21）, the second valve block
（22）Between space and the first valve block（21）With the second valve block（22）Between space formed altogether three layers near air-supply units
（1）Air inlet（23）Main air duct is close to three layers（3）Air outlet（24）, first valve block（21）With the second valve block（22）
Centre bends and for changing air flow direction, the air inlet（23）Size be more than the air outlet（24）And with cone
Degree.
2. railcar according to claim 1 sends air duct noise-reducing optimization system back to, it is characterised in that：The air inlet
（23）First valve block at place（21）Port and nearest side transition passage（2）The distance of outer wall is 75~85mm, described the
Two valve blocks（22）Port and nearest side transition passage（2）The distance of outer wall is 75~85mm, the air inlet（23）Place
First valve block（21）With the second valve block（22）Between height be 120~140mm.
3. railcar according to claim 1 and 2 sends air duct noise-reducing optimization system back to, it is characterised in that：The air-out
Mouthful（24）First valve block at place（21）Port and nearest side transition passage（2）The distance of outer wall is 100~110mm, institute
State air outlet（24）Second valve block at place（22）Port and nearest side transition passage（2）The distance of outer wall be 100~
110mm, the air outlet（24）Locate the first valve block（21）With the second valve block（22）Between height be 45~65mm.
4. railcar according to claim 1 sends air duct noise-reducing optimization system back to, it is characterised in that：The main air duct
（3）The meshed deflector of tool is provided with its two side（31）, deflector described in two（31）Between corresponding side wall
Interlayer be provided with acoustical cotton（32）.
5. the railcar according to claim 1 or 4 sends air duct noise-reducing optimization system back to, it is characterised in that：The main wind
Road（3）The corner of air-flow is provided with circular arc dividing plate, the edge of the circular arc dividing plate windward side has wedge angle.
6. railcar according to claim 1 sends air duct noise-reducing optimization system back to, it is characterised in that：The air -return duct
（5）Entrance have at arc transition, the horizontal length at the arc transition be more than the air -return duct（5）Entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265294.1U CN206278107U (en) | 2016-11-23 | 2016-11-23 | Railcar sends air duct noise-reducing optimization system back to |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265294.1U CN206278107U (en) | 2016-11-23 | 2016-11-23 | Railcar sends air duct noise-reducing optimization system back to |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206278107U true CN206278107U (en) | 2017-06-27 |
Family
ID=59082786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621265294.1U Active CN206278107U (en) | 2016-11-23 | 2016-11-23 | Railcar sends air duct noise-reducing optimization system back to |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206278107U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792091A (en) * | 2017-12-25 | 2018-03-13 | 洛阳明创矿山冶金设备有限公司 | A kind of subway noise-proofing body structure |
| CN110450804A (en) * | 2019-07-31 | 2019-11-15 | 中车青岛四方机车车辆股份有限公司 | Train air-conditioning return air system, train air-conditioning device and train |
| CN111189127A (en) * | 2020-01-20 | 2020-05-22 | 重庆华光环境工程设备有限公司 | Noise elimination and sound insulation device for air conditioner outdoor unit |
-
2016
- 2016-11-23 CN CN201621265294.1U patent/CN206278107U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792091A (en) * | 2017-12-25 | 2018-03-13 | 洛阳明创矿山冶金设备有限公司 | A kind of subway noise-proofing body structure |
| CN110450804A (en) * | 2019-07-31 | 2019-11-15 | 中车青岛四方机车车辆股份有限公司 | Train air-conditioning return air system, train air-conditioning device and train |
| CN111189127A (en) * | 2020-01-20 | 2020-05-22 | 重庆华光环境工程设备有限公司 | Noise elimination and sound insulation device for air conditioner outdoor unit |
| CN111189127B (en) * | 2020-01-20 | 2021-06-01 | 重庆华光环境工程设备有限公司 | Noise elimination and sound insulation device for air conditioner outdoor unit |
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