JPS62137216A - Air-conditioning duct for railway vehicle - Google Patents
Air-conditioning duct for railway vehicleInfo
- Publication number
- JPS62137216A JPS62137216A JP27678885A JP27678885A JPS62137216A JP S62137216 A JPS62137216 A JP S62137216A JP 27678885 A JP27678885 A JP 27678885A JP 27678885 A JP27678885 A JP 27678885A JP S62137216 A JPS62137216 A JP S62137216A
- Authority
- JP
- Japan
- Prior art keywords
- air
- duct
- discharge
- return
- cabin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/34—Nozzles; Air-diffusers
- B60H1/3407—Nozzles; Air-diffusers providing an air stream in a fixed direction, e.g. using a grid or porous panel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
- B60H2001/00235—Devices in the roof area of the passenger compartment
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、鉄遣車両用空調ダクトに係り、特に車体天井
部分に設置するものに好適な鉄道車両用空調ダクトに関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an air conditioning duct for a railway vehicle, and particularly to an air conditioning duct for a railway vehicle that is suitable for installation in the ceiling of a vehicle body.
従来、車両に設ｒされた空調装置から室内に供給される
調和空気は、天井および側壁等に設置された空調ダクト
を介して送風される。この空調ダクトは、空調袋２の設
置位置および室内議装等の関係から天井部分に多く設置
されている。ところが、調和空気を天井部から室内に吐
出する場合、単に下方へ向けて吐出したのでは室内の温
度分布が不均一になるという問題があった。この問題を
解決するものとして特開昭５９−１９２６６３号公報に
記載の構成が知られている。本構成について第７図ない
し第９図によって説明する。同図において、１は天井部
中間位質に客室長手方向の全長に亘って設置され空調装
置からの調和空気を客室内へ供給するだめの吐出風道、
２は該吐出風道１に併設され客室内の空気を空調装置へ
戻すリターン風道である。３は客室内を循環した空気を
前記リターン風道１に戻すための戻り口であるリターン
口である。４は前記吐出風道１より枝ダクト８を介して
供給される調和空気を客室内へ供給する吐出口である。Conventionally, conditioned air supplied indoors from an air conditioner installed in a vehicle is blown through air conditioning ducts installed on the ceiling, side walls, and the like. This air conditioning duct is often installed in the ceiling part due to the installation position of the air conditioning bag 2 and the interior equipment. However, when the conditioned air is discharged into the room from the ceiling, there is a problem in that if the conditioned air is simply discharged downward, the temperature distribution in the room becomes uneven. A configuration described in Japanese Patent Application Laid-open No. 192663/1983 is known as a solution to this problem. This configuration will be explained with reference to FIGS. 7 to 9. In the figure, reference numeral 1 denotes a discharge air duct which is installed in the middle part of the ceiling over the entire longitudinal length of the cabin and supplies conditioned air from the air conditioner into the cabin;
Reference numeral 2 denotes a return air duct which is attached to the discharge air duct 1 and returns the air in the cabin to the air conditioner. Reference numeral 3 denotes a return port for returning the air that has circulated in the passenger compartment to the return airway 1. Reference numeral 4 denotes a discharge port for supplying conditioned air supplied from the discharge air duct 1 through the branch duct 8 into the passenger compartment.
なお、該吐出口４は客室中央部へ回って調和空気を吐出
するように配置され、リターン口３は前記吐出口４の外
側に下方へ開口するように配置している。The discharge port 4 is disposed so as to discharge conditioned air toward the center of the passenger compartment, and the return port 3 is disposed outside the discharge port 4 so as to open downward.
このような構成において、空調袋ばから吐出された調和
空気は面記吐出風道１から枝ダクト８を介し吐出口４か
ら客室内へ吐出される。そして。In such a configuration, the conditioned air discharged from the air conditioning bag is discharged from the discharge air duct 1 through the branch duct 8 and from the discharge port 4 into the passenger compartment. and.
荷物棚底面および前面に沿うことにより客室中央上方へ
わχれ、客室中央位置で左右から供給された調和空気が
ぶりかり合い床面へ向って下降する。By following the bottom and front surfaces of the luggage racks, the air is deflected upward to the center of the cabin, and the conditioned air supplied from the left and right sides collide with each other at the center of the cabin and descend toward the floor.
該下降した調和空気は床面および側ｆｉｔこ沿って上昇
し、リターン口３から吸込まれリターン風道２を介して
空調装置に戻される。The descended conditioned air rises along the floor and side fittings, is sucked in from the return port 3, and is returned to the air conditioner via the return air passage 2.
ところで、二のような構成においては、客室両側から中
央へ回って調和空気を供給し、前述のように循環させる
ために、吐出風道ｌから吐出口４へ至る枝ダクト８が必
要であり、かつ、リターン口３についても各車両側に設
けなければならず。By the way, in the configuration like 2, in order to supply conditioned air from both sides of the cabin to the center and circulate it as described above, a branch duct 8 leading from the discharge air duct l to the discharge port 4 is required. In addition, the return port 3 must also be provided on each vehicle side.
リターン風道２を該リターン口３に連結する必要があり
、天井部構造の簡略化については配慮されていなかった
。また、各風道すなわち送風継路に多ｑの分岐部を設け
ることになり、通風抵抗が増大し空調装置に対する負荷
が大きくこの点についても配慮されていなかった。一方
、調和空気の循環についても前記構成によると、客室左
右に設置された吐出口４から吐出された調和空気は客室
中央へ向って進み、客室中央部でぶつかった後下降し、
その後床面および側壁に沿って上昇してリターン口３よ
り空調装置へ戻される循環となっている。しかし、前記
調和空気の吐出風速が速い場合、該調和空気の流れは第
７図に示すように荷物棚に沿ったものとはならず、第８
図に示すように荷物棚前面で渦を生じ、主流は上昇成分
を持たないまま客室中央部でぶつかる二とになり、前述
のような循環は得られない。また、吐出風速カヅ遅い場
合、ｔＪ９図に示すように粘着によって荷物棚に沿った
流れが得られるが、風速の減衰が早く客室内での充分な
調和空気の循環は期待できない。このように前述の構成
においては、調和空気の吐出風速媛こよって循環状態が
変化するため、該風速の管理が煩雑になる恐れがあった
。It was necessary to connect the return air duct 2 to the return port 3, and no consideration was given to simplifying the ceiling structure. Moreover, since many q branch parts are provided in each air passage, that is, in the air joint passage, ventilation resistance increases and the load on the air conditioner is large, and no consideration has been given to this point. On the other hand, according to the above configuration regarding the circulation of conditioned air, the conditioned air discharged from the discharge ports 4 installed on the left and right sides of the cabin advances toward the center of the cabin, collides in the center of the cabin, and then descends.
The air then rises along the floor and side walls and is returned to the air conditioner through the return port 3. However, when the discharge wind speed of the conditioned air is high, the flow of the conditioned air does not follow the luggage rack as shown in FIG.
As shown in the figure, a vortex is generated in front of the luggage rack, and the main flow collides in the center of the cabin without having an upward component, so the circulation as described above cannot be obtained. In addition, when the discharge wind speed is slow, a flow along the baggage shelf is obtained due to adhesion as shown in Figure tJ9, but the wind speed attenuates quickly and sufficient circulation of conditioned air in the cabin cannot be expected. As described above, in the above-mentioned configuration, the circulation state changes depending on the discharge wind speed of the conditioned air, so there is a risk that the management of the wind speed becomes complicated.
本発明の目的とするところは、簡単な構成で客室内を調
和空気が効率よ炙循環するようにし、客室内のａ度分布
の均一化を図り得る鉄道車両用空調ダクトを提供するこ
とにある。An object of the present invention is to provide an air conditioning duct for a railway vehicle that has a simple configuration, allows conditioned air to be efficiently circulated in the cabin, and is capable of uniformizing the distribution of degrees within the cabin. .
本発明は、調和空気の吐出口およびリターン口を客室全
長に亘って天井中央部に配置し、かつ。According to the present invention, the outlet and return ports for conditioned air are arranged in the center of the ceiling along the entire length of the cabin, and.
該吐出口およびリターン口を比較的近い位置に設けた構
成としたことを特徴とするものである。The present invention is characterized in that the discharge port and the return port are provided relatively close to each other.
以下、本発明の実施例を第１図ないし第６図によって説
明する。第１図は本発明による空調ダクトの一実施例を
備えた鉄道車両の車体幅方向断面図、第２図は第１図の
鉄道車両の天井部分を下方から見た平面図、第３図はｆ
ｆ１１図の風道部分の拡大断面図、第４因は本発明によ
る空調ダクトの他の実施例を備えた鉄道車両の車体幅方
向断面図、第５図は第４図の風道部分の拡大断面図、第
６図は男３図および第５図のＡ−Ａ部断面図である。Embodiments of the present invention will be described below with reference to FIGS. 1 to 6. FIG. 1 is a cross-sectional view in the car body width direction of a railway vehicle equipped with an embodiment of an air conditioning duct according to the present invention, FIG. 2 is a plan view of the ceiling of the railway vehicle shown in FIG. 1 viewed from below, and FIG. f
Figure f11 is an enlarged sectional view of the wind duct portion, the fourth factor is a sectional view in the width direction of a railway vehicle equipped with another embodiment of the air conditioning duct according to the present invention, and Fig. 5 is an enlarged view of the wind duct portion of Fig. 4. The cross-sectional view, FIG. 6, is a cross-sectional view taken along the line AA in Figure 3 and Figure 5.
前記第１図ないし第３図において、１ａは客室天井中央
寄りの位αに車体長手方向全長に亘って設けられた吐出
風道で、車端屋根上盛こ設置された空調装置５から調和
空気を車体長手方向に送風する主風道９と連通されてい
る。該吐出風道１ａと主風道９との連通部分は第６図に
示すように開口穴１３を設けることにより連通している
。このように開口穴ｌを介して吐出風道１ａと主風道９
とを連通ずることにより、該主風道９内が圧力室の役目
を果し、吐出風道１ａへの供給風量を車体全長に亘って
ほぼ均一にすることができる。また、前記吐出風道１８
は調和空気を客室側壁下方へ吐出するように吐出口４ａ
が形成されている。すなわち、第３図に示すように吐出
口４ａの部分に調和空気を前述のように客室側壁下方へ
吐出させる案内として案内板ｌＯが設けられている。な
お、この案内板ｌＯは該吐出風道１ａに隣接して設けら
れた照明具７の受金を兼ねるものとなっている。次に、
２ａは並行に設けられた吐出風道１ａの間に配置された
リターン風道で、その下面には客室内の空気を吸込むた
めのリターン口３ａが設けられている。In Figs. 1 to 3, reference numeral 1a denotes a discharge air passage installed along the entire length of the car body at a position α near the center of the cabin ceiling, which supplies conditioned air from an air conditioner 5 mounted on the roof at the end of the car. It communicates with a main airway 9 that blows air in the longitudinal direction of the vehicle body. The discharge air passage 1a and the main air passage 9 communicate with each other by providing an opening hole 13 as shown in FIG. In this way, the discharge air passage 1a and the main air passage 9 are connected through the opening hole l.
By communicating with the main air passage 9, the inside of the main air passage 9 serves as a pressure chamber, and the amount of air supplied to the discharge air passage 1a can be made almost uniform over the entire length of the vehicle body. Further, the discharge air passage 18
is a discharge port 4a so as to discharge conditioned air to the lower side wall of the passenger compartment.
is formed. That is, as shown in FIG. 3, a guide plate 10 is provided at the discharge port 4a as a guide for discharging the conditioned air toward the lower side wall of the passenger compartment as described above. Note that this guide plate 1O also serves as a receiver for a lighting fixture 7 provided adjacent to the discharge air path 1a. next,
Reference numeral 2a denotes a return air passage arranged between the discharge air passages 1a provided in parallel, and a return opening 3a for sucking in air from the cabin is provided on the lower surface of the return air passage 2a.
ところで、前記主風道９は吐出風道１３″のそれぞれ外
側に配置されている。また、該主風道９への調和空気の
供給は空調装置５から消音器６を介して行なわれる。By the way, the main air ducts 9 are arranged outside the discharge air ducts 13''. Conditioned air is supplied to the main air ducts 9 from the air conditioner 5 via a muffler 6.
このような構成１こおいて、調和空気は空調装置５から
消音器６を経て主風道９に供給され、該主風道９から吐
出風道１ａへは開口穴１３を経て供給される。そして、
吐出風道ｌａ内に供給された調和空気は、案内板１０に
よって客室内の近い方の側壁下方へ向って吐出される。In such configuration 1, conditioned air is supplied from the air conditioner 5 through the muffler 6 to the main air duct 9, and from the main air duct 9 to the discharge air duct 1a through the opening hole 13. and,
The conditioned air supplied into the discharge air passage la is discharged by the guide plate 10 toward the lower side wall of the passenger compartment.
その後、該調和空気は側壁、床面の順に当たり客室中央
へ向い、さらに１客室中央部で左右両側から流れてきた
該調和空気がぶりかりて上昇する。このようにして客室
中央部で上昇した調和空気は、リターン口３８からリタ
ーン風道２ａに吸込まれ、空調装置５へ戻される。Thereafter, the conditioned air hits the side walls and the floor in that order and heads toward the center of the cabin, and furthermore, at the center of one cabin, the conditioned air that has flowed from both left and right sides rises again. The conditioned air that has risen in the center of the cabin in this way is sucked into the return air passage 2a through the return port 38 and returned to the air conditioner 5.
このような構成によれば、リターン風道２３を天井中央
部に配置するとともに、その両側に吐出風道１ａを配置
し、吐出風道１３から側壁下方へ調和空気を吐出する構
成としたことにより、調和空気の吐出風速に無関係に朋
述のような良好な該調和空気の循環が行なえ１客室内金
体に調和空気を行渡らせることができる。また、前記構
成によれば、車道９．吐出風道１ａ、リターン風道２ａ
が天井部中間位置に集中して配置されているため、枝ダ
クト等の分岐部分を設ける必要がなｑ、構造の簡略化が
図れる。また、分岐部分が少ないため、通風抵抗の増大
を防止でき、空調装置５に対する負荷を低減できる。According to this configuration, the return air duct 23 is arranged in the center of the ceiling, and the discharge air duct 1a is arranged on both sides of the return air duct 23, and the conditioned air is discharged from the discharge air duct 13 to the lower part of the side wall. As described above, the conditioned air can be circulated well regardless of the discharge wind speed of the conditioned air, and the conditioned air can be distributed throughout the metal body in one cabin. Moreover, according to the said structure, the roadway 9. Discharge air path 1a, return air path 2a
Since these are concentrated in the middle of the ceiling, there is no need to provide branching parts such as branch ducts, and the structure can be simplified. Further, since there are few branching parts, an increase in ventilation resistance can be prevented, and the load on the air conditioner 5 can be reduced.
次に、第４図および第５図の他の実施例について説明す
る。同図において、ＩＴｆｆ記−実施例と異なる点は、
リターン風道２３を上方へずらし、その下方に間接照明
を行なう照明具７ａを設け、該リターン風道２３の下面
を間接照明に利用した点である。なお、１１は照明具７
ａからの直接光を反射するために設けられた遮光板であ
る。Next, other embodiments shown in FIGS. 4 and 5 will be described. In the figure, the points different from the ITff description-example are as follows.
The return air passage 23 is shifted upward and a lighting fixture 7a for providing indirect illumination is provided below it, and the lower surface of the return air passage 23 is utilized for indirect illumination. In addition, 11 is a lighting fixture 7
This is a light shielding plate provided to reflect direct light from a.
このような構成において、調和空気の循環経路は前記一
実施例とほぼ同構で、側壁下方へ向って吐出された該調
和空気は側壁および床面に沿って流れ、客室中央部で反
対側からの調和空気とぶつかって上昇し、リターン口３
ａを介してリターン風道２ａに吸込まれる。なお、照明
具７の光は遮光板１１で反射されたものやよび直接光が
、リターン風道２ａの下面で反射され客室内を照らすこ
とになる。In such a configuration, the circulation path of the conditioned air is almost the same as in the previous embodiment, and the conditioned air discharged downward from the side wall flows along the side wall and the floor, and is circulated from the opposite side at the center of the cabin. It collides with the conditioned air and rises, returning to the return port 3.
The air is sucked into the return air passage 2a through the air passage a. Note that the light from the lighting fixture 7 is reflected by the light shielding plate 11, and some direct light is reflected by the lower surface of the return airway 2a, illuminating the inside of the passenger room.
このような構成によれば、一実施例の構成に比べて風道
全体の幅を狭くできるとともに、リターン風道２ａの下
面を間接照明に利用できる等の効果を有する。According to such a configuration, the width of the entire air duct can be narrowed compared to the configuration of one embodiment, and the lower surface of the return air duct 2a can be used for indirect lighting.
〔発明の効果〕
以上説明したように本発明によれば、構成を簡単にする
ことができるとともに、調和空気を客室内会こ効率よく
循環させることができ、客室内の温度分布を均一化する
ことができる。[Effects of the Invention] As explained above, according to the present invention, the configuration can be simplified, conditioned air can be efficiently circulated throughout the cabin, and the temperature distribution in the cabin can be made uniform. be able to.
＠１図は本発明による空調ダクトの一実施例を備えた車
両の車体幅方向断面図、第２図は第１図の車両における
天井部分を下方から見た平面図、第３図は第１図の風；
ｒｉ部分の拡大断面図、第４図は本発明曝こよる空調ダ
クトの他の実施例を備えた車両の車体幅方向断面図、′
！５５図は第４図の風道部分の拡大断面図、第６図は第
３図および第５図の八−入部断面図、第７図は従来の空
調ダクトを示す車体幅方向断面図、第８図および軍９図
は第７図の空調ダクトにおける調和空気吐出部を示す断
面図である。
１ａ・・・・・・吐出風道、２ｍ・・・・・・リターン
風道、３ａ・・・・・・リターン口、４ａ・・・・・・
吐出口、５・・・・・・空調代理人 弁理士 小 川
勝 男
才３図
才４図
第５凶
オ６０@ Figure 1 is a sectional view in the vehicle body width direction of a vehicle equipped with an embodiment of the air conditioning duct according to the present invention, Figure 2 is a plan view of the ceiling portion of the vehicle in Figure 1 seen from below, and Figure 3 is a Figure wind;
4 is an enlarged cross-sectional view of the ri portion; FIG. 4 is a cross-sectional view in the vehicle body width direction of a vehicle equipped with another embodiment of the air conditioning duct according to the present invention;
! Figure 55 is an enlarged sectional view of the wind duct portion in Figure 4, Figure 6 is a sectional view of the 8-inlet section in Figures 3 and 5, Figure 7 is a sectional view in the vehicle body width direction showing a conventional air conditioning duct; 8 and 9 are cross-sectional views showing the conditioned air discharge portion in the air conditioning duct of FIG. 7. 1a...Discharge airway, 2m...Return airway, 3a...Return port, 4a...
Discharge port, 5... Air conditioning agent Patent attorney Masaru Ogawa Male 3rd figure 4th figure 5th evil eye 60
Claims (1)
、かつ、該客室内空気を吸込み空調装置へ戻すリターン
風道と、該リターン風道外側位置の車体長手方向に配置
され、かつ、空調装置から供給された調和空気を客室内
に供給する吐出風道と、該吐出風道の調和空気吐出部に
設けられ該調和空気を客室側壁に向って吐出させる案内
手段とから構成した鉄道車両用空調ダクト。1. A return air duct is arranged in the longitudinal direction of the car body at the center of the ceiling in the cabin and takes in the air in the cabin and returns it to the air conditioner; An air conditioning duct for a railway vehicle comprising a discharge air duct that supplies supplied conditioned air into a cabin, and a guide means provided at a conditioned air discharge portion of the discharge duct to discharge the conditioned air toward a side wall of the cabin. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27678885A JPS62137216A (en) | 1985-12-11 | 1985-12-11 | Air-conditioning duct for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27678885A JPS62137216A (en) | 1985-12-11 | 1985-12-11 | Air-conditioning duct for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62137216A true JPS62137216A (en) | 1987-06-20 |
Family
ID=17574380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27678885A Pending JPS62137216A (en) | 1985-12-11 | 1985-12-11 | Air-conditioning duct for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62137216A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423048A (en) * | 1987-07-06 | 1989-01-25 | Boeing Co | Ventilation system and removal of air polluted |
| JP2009113656A (en) * | 2007-11-07 | 2009-05-28 | Nippon Sharyo Seizo Kaisha Ltd | Railway vehicle |
| JP4757793B2 (en) * | 2004-03-03 | 2011-08-24 | 麒麟麦酒株式会社 | Sealed container and manufacturing method thereof |
| WO2013111417A1 (en) * | 2012-01-25 | 2013-08-01 | 川崎重工業株式会社 | Vehicular air conditioning duct and railway vehicle |
| CN104859674A (en) * | 2015-06-05 | 2015-08-26 | 南车青岛四方机车车辆股份有限公司 | Silencing air duct and railway vehicle |
| WO2018177704A1 (en) * | 2017-03-31 | 2018-10-04 | Siemens Mobility GmbH | Air duct for installation in a vehicle |
-
1985
- 1985-12-11 JP JP27678885A patent/JPS62137216A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423048A (en) * | 1987-07-06 | 1989-01-25 | Boeing Co | Ventilation system and removal of air polluted |
| JP4757793B2 (en) * | 2004-03-03 | 2011-08-24 | 麒麟麦酒株式会社 | Sealed container and manufacturing method thereof |
| JP2009113656A (en) * | 2007-11-07 | 2009-05-28 | Nippon Sharyo Seizo Kaisha Ltd | Railway vehicle |
| WO2013111417A1 (en) * | 2012-01-25 | 2013-08-01 | 川崎重工業株式会社 | Vehicular air conditioning duct and railway vehicle |
| JP2013151224A (en) * | 2012-01-25 | 2013-08-08 | Kawasaki Heavy Ind Ltd | Vehicle air conditioning duct and railroad vehicle |
| US9771086B2 (en) | 2012-01-25 | 2017-09-26 | Kawasaki Jukogyo Kabushiki Kaisha | Air-conditioning duct in passenger car and railcar |
| CN104859674A (en) * | 2015-06-05 | 2015-08-26 | 南车青岛四方机车车辆股份有限公司 | Silencing air duct and railway vehicle |
| WO2018177704A1 (en) * | 2017-03-31 | 2018-10-04 | Siemens Mobility GmbH | Air duct for installation in a vehicle |
| RU197141U1 (en) * | 2017-03-31 | 2020-04-02 | Сименс Мобилити Гмбх | VEHICLE INSTALLATION VENT |
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