CN109017846A - One kind being used for railway vehicle air conditioner system variable cross-section air channel structure - Google Patents
One kind being used for railway vehicle air conditioner system variable cross-section air channel structure Download PDFInfo
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- CN109017846A CN109017846A CN201810861832.0A CN201810861832A CN109017846A CN 109017846 A CN109017846 A CN 109017846A CN 201810861832 A CN201810861832 A CN 201810861832A CN 109017846 A CN109017846 A CN 109017846A
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- air duct
- air
- section
- main air
- length direction
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention belongs to air-conditioning system fields, and in particular to one kind is used for railway vehicle air conditioner system variable cross-section air channel structure, two variable cross-section air ducts including the setting that is centrosymmetric；Variable cross-section air duct includes interconnected side wall wind channel, main air duct and branch air duct；One end of main air duct is open end, and the other end is closed end, and main air duct is variable section structure, and the cross section of specifically main air duct is gradually become smaller from open end to closed end；Main air duct is equipped with the first air inlet on the bottom surface along length direction, and the bottom surface along length direction is main air duct towards the one side inside railway carriage；One end of side wall wind channel is equipped with air inlet, and the other end is connected to the open end of main air duct；One end of branch air duct is open end, and the other end is closed end；The open end of branch air duct is connected to side wall wind channel, and branch air duct is equipped with the second air inlet on the bottom surface along length direction.Static pressure is uniform in the application realization air duct, and balanced ventilation.
Description
Technical field
The invention belongs to air-conditioning system fields, and in particular to one kind is tied for railway vehicle air conditioner system variable cross-section air duct
Structure.
Background technique
To guarantee that temperature difference is no more than ± 3 DEG C in each region in rail traffic vehicles, air duct in rail traffic vehicles
Design and application are particularly important.The design in air duct needs to guarantee that there is an air-supply in each region in compartment, while each air outlet
Air quantity is uniform.
Air duct in current each rail vehicle mostly uses elongated type, i.e. full vehicle is run through in air duct, and the section in air duct does not become
Change, locally increases static pressure in air duct so that wind air outlet near this is blown out by increasing baffle in air duct.Though such method
It also passes through accurate wind field to calculate, but such method adds additional air duct weight, also increases the resistance in air duct simultaneously.
Summary of the invention
The present invention provides one kind and is used for railway vehicle air conditioner system variable cross-section air duct, and static pressure is equal in realization air duct
It is even, and balanced ventilation.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows, one kind is used for railway vehicle air conditioner system
Variable cross-section air channel structure, two variable cross-section air ducts including the setting that is centrosymmetric；Variable cross-section air duct includes interconnected side
Wall wind channel, main air duct and branch air duct；One end of main air duct is open end, and the other end is closed end, and main air duct is variable cross-section knot
The cross section of structure, specifically main air duct is gradually become smaller from open end to closed end；Main air duct is in the bottom surface along length direction
It is equipped with the first air outlet, the bottom surface along length direction is main air duct towards the one side inside railway carriage；Side wall
One end of wind channel is equipped with air inlet, and the other end is connected to the open end of main air duct；One end of branch air duct is open end, the other end
For closed end；The open end of branch air duct is connected to side wall wind channel, and is located at one end that side wall wind channel is connected to main air duct, branch
Air duct is equipped with the second air outlet on the bottom surface along length direction.
Preferably, bottom surface of the main air duct along length direction and the top surface along length direction are in 1-3 ° of angle.
Preferably, bottom surface of the main air duct along length direction and the top surface along length direction are in 2 ° of angle.
Preferably, center line of first air outlet along main air duct length direction bottom surface is arranged.
Preferably, there are two branch air ducts, two branch air ducts are arranged side by side；The open end of two branch air ducts is connected to side wall
Wind channel, and it is located at one end that side wall wind channel is connected to main air duct.
Beneficial effect
Railway vehicle air conditioner system variable cross-section Duct design, to guarantee that wind speed is equal in air duct, i.e., constant speed method is principle, with
The outlet air in air duct, the air quantity in air duct is reduced, and to avoid air duct static pressure from increasing, and variable cross-section is used to design, is deliberately passed through contracting
Small air duct by section, keep the wind speed in air duct equal, and guarantee dynamic pressure it is equal, dynamic pressure is equal also to ensure that air duct
Static pressure is equal, to achieve the purpose that balanced ventilation.This uses variable cross-section air duct pattern using novel invention, allows main air duct
The dynamic pressure of interior air is uniformly converted to static pressure with the variation at air duct interface, thus guarantee the uniform of static pressure in whole section air duct,
To guarantee the uniformity of whole section of air duct air-supply；Meanwhile the wind velocity out in each air port can be reduced, to reduce making an uproar for air outlet
Sound.
The railway vehicle air conditioner system variable cross-section Duct design pattern of this invention can guarantee that air duct is blown in rail carriages
Uniformity, guarantee vehicle in each region have air-supply and uniformly, to guarantee that the temperature difference of each region in compartment does not surpass
± 3 DEG C are crossed, the comfort level in compartment is improved.
Detailed description of the invention
Fig. 1 the application's is a kind of for the railway vehicle air conditioner system schematic diagram of variable cross-section air channel structure；
The top view of Fig. 2 variable cross-section air channel structure；
The bottom view of Fig. 3 variable cross-section air channel structure；
The structural schematic diagram of Fig. 4 main air duct；
The schematic cross-section of Fig. 5 two main air ducts in variable cross-section air channel structure；
In figure, the 1, first air inlet；2, the second air inlet；3, the first side wall wind channel；4, the second side wall wind channel；5,
One main air duct；6, the second main air duct；7, the first branch air duct；8, the second branch air duct；9, third air outlet；10, the 4th air outlet；
11, the first air outlet；12, the second air outlet；13, car light mounting portion.
Specific embodiment
To keep purpose and the technical solution of the embodiment of the present invention clearer, below in conjunction with the attached of the embodiment of the present invention
Figure, is clearly and completely described the technical solution of the embodiment of the present invention.Obviously, described embodiment is of the invention
A part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of being not necessarily to creative work.
As shown in Figure 1, a kind of be used for railway vehicle air conditioner system variable cross-section air channel structure, including the setting that is centrosymmetric
Two variable cross-section air ducts；Variable cross-section air duct includes interconnected side wall wind channel, main air duct and branch air duct；The one of main air duct
End is open end, and the other end is closed end, and main air duct is variable section structure, and specifically the cross section of main air duct is from open end to envelope
Closed end gradually becomes smaller；Main air duct is equipped with the first air outlet on the bottom surface along length direction, along the bottom in length direction
Face is main air duct towards the one side inside railway carriage；One end of side wall wind channel is equipped with air inlet, and the other end is connected to
The open end of main air duct；One end of branch air duct is open end, and the other end is closed end；The open end of branch air duct is connected to side wall and draws
Air duct, and be located at one end for being connected to main air duct of side wall wind channel, branch air duct is on the bottom surface along length direction equipped with the
Two air outlets.There are two branch air ducts, and two branch air ducts are arranged side by side；The open end of two branch air ducts is connected to side wall air inducing
Road, and it is located at one end that side wall wind channel is connected to main air duct.
In detail as Figure 2-3, one of variable cross-section air duct includes the first interconnected side wall wind channel 3, the
One main air duct 5 and the first branch air duct 7；One end of first main air duct 5 is open end, and the other end is closed end, and the first air duct is to become
The cross section of cross section structure, specifically the first main air duct 5 is gradually become smaller from open end to closed end；First main air duct 5 is along certainly
The bottom surface in body length direction is equipped with the first air outlet 11, and the bottom surface along length direction is the first main air duct 5 towards track
The one side of vehicle compartment；Center line of first main air duct 5 along length direction bottom surface is arranged；First side wall wind channel 3
One end be equipped with the first air inlet 1, the other end is connected to the open end of the first main air duct 5；One end of first branch air duct 7 is opening
End, the other end is closed end；The open end of first branch air duct 7 is connected to the first side wall wind channel 3, and is located at the first side wall air inducing
One end that road 3 is connected to the first main air duct 5, the first branch air duct 7 are equipped with the second air outlet on the bottom surface along length direction
12。
As the improved technical solution of the present invention, the first main air duct 5 is along the bottom surface in length direction and along length
The top surface in direction is in 1-3 ° of angle, it is preferable that the first main air duct is along the bottom surface in length direction and along length direction
Top surface be in 2 ° of angle.It can be appreciated that the first main air duct 5 along length direction bottom surface along local width direction
Angle α, as shown in figure 4, α is 88 °.
There are two first branch air ducts 7, and two 7 open ends of the first branch air duct are connected to the first side wall wind channel 3 side by side, and
Positioned at one end that the first side wall wind channel is connected to the first main air duct.
Another variable cross-section air duct includes the second interconnected side wall wind channel 4, the second main air duct 6 and the second branch air duct
8；One end of second main air duct 6 is open end, and the other end is closed end, and the second main air duct is variable section structure, specifically second
The cross section of main air duct 6 is gradually become smaller from open end to closed end；Second main air duct 6 is on the bottom surface along length direction
Equipped with third air outlet 9, the bottom surface along length direction is the second main air duct 6 towards the one side inside railway carriage；
Center line of the third air outlet 9 along 6 length direction bottom surface of the second main air duct is arranged；One end of second side wall wind channel 4 is equipped with the
Two air inlets 2, the other end are connected to the open end of the second main air duct 6；One end of second branch air duct 8 is open end, and the other end is
Closed end；The open end of second branch air duct 8 is connected to the second side wall wind channel 4, and it is main to be located at the second side wall wind channel 4 and second
One end that air duct 6 is connected to, the second branch air duct 8 are equipped with the 4th air outlet 10 on the bottom surface along length direction.Second wind
There are two roads 8, and two 8 open ends of the second branch air duct are connected to the second side wall wind channel 4 side by side, and are located at the second side wall air inducing
One end that road 4 is connected to the second main air duct.
Rail traffic is the comfort type for guaranteeing passenger in compartment, also has high requirement to the noise in compartment.
When practical application, since air-conditioner set suspended fixing is under vehicle, so air-supply first passes through side wall wind channel for air-conditioning
The air-supply of unit is guided under vehicle in the main air duct of roof.Vehicle is equipped with 2 air-conditioner sets, draws respectively from corresponding two side walls
It blows to car in air duct.Main air duct is forming car light mounting portion 13 towards one side (bottom surface of the main air duct) invagination in compartment.
Particularly wind from air-conditioner set air blower blowout after enter side wall wind channel, into main air duct in be with dynamic pressure gradually
Gradually it is transformed into a process of static pressure.It, can edge since the first side wall wind channel and the second side wall wind channel are center symmetric settings
Railroad car lateral wall air inlet；Wind is uniformly blown into compartment by the air outlet being arranged on two branch air ducts and two main air ducts.
The main air duct of the application is using variable cross-section air duct, and the top surface of main air duct is parallel relative to car body top,
An as plane；The bottom surface of main air duct is an inclined-plane.Cross-section air duct compared with the existing technology, the air duct knot of the application
In ventilation, wind speed gradually decreases structure in air duct, and dynamic pressure gradually decreases, and static pressure can be then gradually increased, and causes more to air duct
Static pressure in the air duct of end is bigger, and air output is also bigger, influences uniformity of blowing, and has superiority.
The variable cross-section air duct of the application is established on the basis of hydrodynamics.According to Bai Nuoli equation, air is in air duct
When interior flowing, total wind pressure can be divided into static pressure, dynamic pressure and drag losses three parts.Main air duct structure uses setting for variable cross-section
Pattern is counted, since rail traffic vehicles length is shorter, air duct inner surface is smooth, and all drag losses are ignored, to guarantee to lead
The uniformity of air duct outlet air into compartment.To guarantee that each point static pressure is identical in whole section air duct, air-supply uniformly, then guarantees whole section air duct
Interior dynamic pressure is equal, and the equal i.e. wind speed of dynamic pressure is equal.
As shown in figure 4, main air duct is gradually reduced in the direction of the width, interface is gradually become smaller.In the feelings reduced by air quantity
Under condition, reduces through interface, maintain wind speed.
The above is only embodiments of the present invention, and the description thereof is more specific and detailed, and but it cannot be understood as right
The limitation of the invention patent range.It should be pointed out that for those of ordinary skill in the art, not departing from the present invention
Under the premise of design, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (5)
1. one kind is used for railway vehicle air conditioner system variable cross-section air channel structure, which is characterized in that including the setting that is centrosymmetric
Two variable cross-section air ducts；Variable cross-section air duct includes interconnected side wall wind channel, main air duct and branch air duct；The one of main air duct
End is open end, and the other end is closed end, and main air duct is variable section structure, and specifically the cross section of main air duct is from open end to envelope
Closed end gradually becomes smaller；Main air duct is equipped with the first air outlet on the bottom surface along length direction, along the bottom in length direction
Face is main air duct towards the one side inside railway carriage；One end of side wall wind channel is equipped with air inlet, and the other end is connected to
The open end of main air duct；One end of branch air duct is open end, and the other end is closed end；The open end of branch air duct is connected to side wall and draws
Air duct, and be located at one end for being connected to main air duct of side wall wind channel, branch air duct is on the bottom surface along length direction equipped with the
Two air outlets.
2. according to claim 1 a kind of for railway vehicle air conditioner system variable cross-section air channel structure, which is characterized in that
Bottom surface of the main air duct along length direction is in 1-3 ° of angle with the top surface along length direction.
3. according to claim 1 or 2 a kind of for railway vehicle air conditioner system variable cross-section air channel structure, feature exists
It is in 2 ° of angle with the top surface along length direction in, bottom surface of the main air duct along length direction.
4. according to claim 1 a kind of for railway vehicle air conditioner system variable cross-section air channel structure, which is characterized in that
Center line of first air outlet along main air duct length direction bottom surface is arranged.
5. according to claim 1 a kind of for railway vehicle air conditioner system variable cross-section air channel structure, which is characterized in that
There are two branch air ducts, and two branch air ducts are arranged side by side, and the open end of two branch air ducts is connected to side wall wind channel, and is located at side
One end that wall wind channel is connected to main air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861832.0A CN109017846A (en) | 2018-07-27 | 2018-07-27 | One kind being used for railway vehicle air conditioner system variable cross-section air channel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861832.0A CN109017846A (en) | 2018-07-27 | 2018-07-27 | One kind being used for railway vehicle air conditioner system variable cross-section air channel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109017846A true CN109017846A (en) | 2018-12-18 |
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ID=64648256
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810861832.0A Pending CN109017846A (en) | 2018-07-27 | 2018-07-27 | One kind being used for railway vehicle air conditioner system variable cross-section air channel structure |
Country Status (1)
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| CN (1) | CN109017846A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762921A (en) * | 2019-11-04 | 2020-02-07 | 珠海格力电器股份有限公司 | Air duct structure and refrigerator with same |
| CN111976766A (en) * | 2020-08-21 | 2020-11-24 | 中车株洲电力机车有限公司 | Air conditioner air duct for rail transit vehicle |
| CN114580124A (en) * | 2022-03-04 | 2022-06-03 | 上海海洋大学 | Design method for variable-section uniform air supply pipeline of rail transit vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110762921A (en) * | 2019-11-04 | 2020-02-07 | 珠海格力电器股份有限公司 | Air duct structure and refrigerator with same |
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| CN114580124A (en) * | 2022-03-04 | 2022-06-03 | 上海海洋大学 | Design method for variable-section uniform air supply pipeline of rail transit vehicle |
| CN114580124B (en) * | 2022-03-04 | 2024-04-26 | 上海海洋大学 | Design method of variable-section uniform air supply pipeline of rail transit vehicle |
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Address after: No. 69 Mengxi Road, Wuhu Economic and Technological Development Zone, Wuhu City, Anhui Province, 241000 Applicant after: CRRC Puzhen Alstom Transportation System Co.,Ltd. Address before: No. 69 Mengxi Road, Wuhu Economic and Technological Development Zone, Wuhu City, Anhui Province, 241000 Applicant before: CRRC PUZHEN BOMBARDIER TRANSPORTATION SYSTEMS CO.,LTD. |