JP7132709B2 - rail car - Google Patents

Description

The present invention relates to a railway vehicle, and more specifically, the vehicle has an aisle-side seat and a window-side seat in the passenger compartment, and does not have a luggage rack extending from the side structure on the upper part of the window-side seat, but has a side window for viewing. The present invention relates to a railway vehicle capable of improving the thermal environment of window seats.

In general, in a passenger compartment of a railway vehicle, especially an express train, once a passenger takes a seat, it is often the case that the passenger spends a relatively long time there. At that time, heat such as sunlight enters the room through the side windows in the summer, and cold air enters the room through the side windows in the winter. tends to be easy. For example, Japanese Unexamined Patent Application Publication No. 2002-100003 discloses a railway vehicle designed to improve the comfort of window seats in which the thermal environment tends to change.

As shown in FIG. 9, a railway vehicle 100 disclosed in Patent Document 1 has a cabin 102 provided with side windows 101 on the side surfaces in the width direction. A suction port 105 is formed above the side window 101 on the wall side of the passenger compartment 102 . Patent Document 1 describes air conditioning as follows. That is, the air blown out from the outlet 103 provided in the center 104 of the ceiling flows downward toward the floor 106, and the air that reaches the floor 106 spreads along the floor 106 toward the side wall. Then, the air flows upward along the side window 101 and is sucked from the suction port 105 provided above the side window 101 . In this way, it is possible to create an air flow that circulates throughout the interior of the vehicle interior 102 including the side wall side including the periphery of the side window 101, so that the uniformity of the temperature distribution within the interior of the vehicle interior 102 can be enhanced. In particular, since the air around the side window 101 having a high heat load is directly sucked, the uniformity of the temperature distribution can be improved efficiently. At the same time, since the air flow along the side window 101 is created, hot air or cold air flowing from the side window 101 into the passenger compartment 102 can be blocked by the air curtain effect.

However, in the railway vehicle 100 disclosed in Patent Document 1, the air blown out from the air outlet 103 in the center 104 of the ceiling flows downward toward the floor 106 and spreads to the left and right side walls via the floor 106. Then, the air flows upward along the side window 101, so that the amount of air flowing along the side window 101 is greatly reduced and the wind speed is also reduced. Also, since the air flowing along the side window 101 is the air immediately before the suction port 105, the temperature rises if the air is cool, and the temperature drops if the air is warm. Therefore, for example, in a railroad car equipped with wide side windows (viewing side windows) with a good view, the effect of blocking a large amount of heat and cold air entering through the side windows is small, improving the thermal environment of the window side seats. It was difficult to let

In this regard, in a railway vehicle equipped with a side window for viewing, without a luggage rack extended from the side structure above the window side seat of the car body having aisle side seat and window side seat in the vehicle interior, air conditioning of the window side seat For example, Patent Literature 2 discloses a railway vehicle capable of uniforming the temperature in the passenger compartment while achieving improvements. As shown in FIGS. 10 and 11, this railway vehicle 200 is a railway vehicle having a plurality of side windows 201 on both left and right sides of the vehicle body. and a second air outlet 204 disposed diagonally above the first air outlet 203 when viewed from the side of the vehicle body and blowing downward wind along the side window 201, The second outlet 204 is arranged above the first outlet 203 in the height direction of the passenger compartment, and the first outlet 203 and the second outlet 204 are arranged in the longitudinal direction of the passenger compartment. and are arranged with their positions shifted to the side.

Patent Document 2 describes the following content regarding air conditioning. That is, in order to improve the air conditioning of the seat on the side window 201 side (window side seat), the second air outlet 204 blows downward air along the side window 201, thereby blowing the surface of the side window 201. to create an air curtain. In addition, in the height direction of the passenger compartment, a second air outlet 204 that blows downward air along the side window 201 is located above the first air outlet 203 that blows upward air along the ceiling 202. are arranged so as to shift the positions of adjacent upper and lower air outlets 203 and 204 in the longitudinal direction of the passenger compartment. As a result, an area where the upward wind blown from the first blower outlet 203 and the downward wind blown from the second blower outlet 204 collide with each other, that is, a mixing area 205 is generated. Phenomena such as turbulent flow and diffusion occur in the mixing region 205, which makes the temperature distribution in the passenger compartment uniform and reduces the feeling of draft and stagnation for passengers, thereby creating a comfortable passenger compartment space. ing.

JP 2009-12527 A Japanese Patent Application Laid-Open No. 2004-203100

However, in the railway vehicle 200 disclosed in Patent Document 2, as shown in FIGS. 207 at the upper end. Therefore, a mixing area 205 is formed above between the front and rear side windows 201 where the upward wind blowing from the first blower outlet 203 and the downward wind blowing from the second blower outlet 204 collide with each other. Therefore, in the vicinity of the front and rear ends of each side window 201, the downward wind blowing out from the second outlet 204 becomes weak, making it difficult to create a continuous and uniform air curtain in the front-rear direction of the side window 201. As a result, there is a problem that it is difficult to improve the air conditioning in the window seat positioned near the front end or the rear end of the side window 201 .

In addition, in order to generate a mixing region 205 and make the temperature distribution in the passenger compartment uniform, the positions of the adjacent upper and lower air outlets 203 and 204 are shifted laterally in the longitudinal direction of the passenger compartment. This complicates the air-conditioning equipment including the air-conditioning ducts connected to the air outlets 203 and 204 and increases the cost. Furthermore, since the first air outlet 203 is provided at a position close to the passenger on the window side, the sound of the wind blowing from the first air outlet 203 may cause a noise problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the present invention does not include a luggage rack extending from the side structure above the window side seat of a car body having aisle side seats and window side seats in the interior of the vehicle. To provide a railway vehicle equipped with a side window, which is capable of almost uniformly improving the thermal environment of the window side seats without fear of noise problems and uniformizing the temperature inside the vehicle cabin with a simple structure. aim.

In order to achieve the above objects, a railway vehicle according to the present invention has the following configuration.
(1) A railway vehicle having an aisle-side seat and a window-side seat in the passenger compartment, and having a side window for viewing, without a cargo rack extending from the side structure above the window-side seat of the car body,
An air conditioning ceiling plate formed in a smooth curved shape from the side structure side of the roof structure of the vehicle body to the upper end of the side window,
A blowout port for blowing conditioned air toward the side structure along the ceiling plate for air conditioning is arranged continuously in the rail direction near the side structure of the roof structure.

In the present invention, the air-conditioning ceiling plate is formed in a smoothly curved shape from the side structure side of the roof structure of the vehicle body to the upper end of the side window. Since the air outlets for blowing conditioned air toward the side structure side are arranged continuously in the rail direction, the conditioned air blown from the air outlets is directed along the air conditioning ceiling plate formed in a smooth curved shape. can reach the side window and pass along the side window from above to below. Therefore, the conditioned air blown from the air outlet can flow mainly between the side window and the passenger on the window side from above to below the side window without stagnation. In addition, the conditioned air flowing downward from the upper side of the side window has just come out of the outlet, so it can flow in a state where the conditioned initial temperature is substantially maintained. As a result, it is possible to form an air curtain of conditioned air that flows vertically along the side windows in a laminar flow while alleviating the draft feeling of the conditioned air, thereby improving the insulation performance against heat and cold air from the side windows. can.

In addition, on the side structure side of the roof structure, outlets for blowing conditioned air toward the side structure side along the ceiling plate for air conditioning are arranged continuously in the rail direction, so that An air curtain of conditioned air that flows vertically in a laminar flow can be formed continuously in the rail direction with uniform strength. Therefore, not only the window seat positioned near the center of the side window but also the window seat positioned near the front end or the rear end of the side window can be equally improved in air conditioning.

In addition, the conditioned air that flows vertically along the side window in a laminar flow flows along the floor toward the aisle side at the center of the floor, and then rises to the vicinity of the vehicle ceiling. Then, the conditioned air that has risen to the vicinity of the vehicle ceiling moves downward in the vehicle interior due to the conditioned air that flows downward from above the side windows. Therefore, by simply arranging the air outlet near the side structure of the roof structure, the conditioned air blown from the air outlet can be returned to the vicinity of the vehicle ceiling via the ceiling plate for air conditioning, the side window, and the floor. can be circulated vertically. As a result, the temperature in the passenger compartment can be made uniform with a simple structure without complicating the air outlet, the air conditioning duct, and the like.

In addition, since the outlet for blowing the conditioned air is arranged near the side structure of the roof structure and is not in the vicinity of the side window, the outlet is far from the window seat passengers. Therefore, even if the volume and speed of the conditioned air blown from the air outlet are increased, the noise from the air outlet is less likely to be transmitted to passengers. As a result, it is possible to increase or decrease the volume and speed of the conditioned air blown from the air outlets without making passengers feel uncomfortable with the noise. can be formed. In particular, in railway vehicles equipped with side windows that are wide in the vertical direction (observation side windows) with a good view, the thermal environment of the window seats can be easily adjusted by adjusting the air volume and wind speed of the conditioned air blown from the air outlet. can be improved.

Therefore, in a railway vehicle equipped with a side window for observation without having a luggage rack extended from the side structure on the upper part of the window side seat of the car body having the aisle side seat and the window side seat, the window side seat can be installed without fear of noise problems. It is possible to provide a railway vehicle that can substantially evenly improve the thermal environment and can make the temperature in the passenger compartment uniform with a simple structure.

(2) In the railway vehicle described in (1),
A suspended ceiling plate having left and right ends extending to a lower portion of the outlet is provided below the roof structure.

In addition, since a suspended ceiling plate having left and right ends extending to the lower side of the air outlet is provided under the roof structure, the air outlet can be prevented from being directly seen by passengers. Also, when the conditioned air blown from the air outlet returns to the vicinity of the ceiling of the vehicle via the floor, the suspended ceiling panel prevents the returning conditioned air from joining the conditioned air to be blown in the vicinity of the air outlet. can prevent the initial wind speed of the conditioned air from decreasing. Therefore, it is possible to improve the appearance (design) of the vehicle interior and at the same time to stabilize the air curtain of conditioned air formed along the side windows, thereby improving the performance of blocking heat and cold air from the side windows. can.

(3) In the railway vehicle described in (2),
A suction port for sucking indoor air whose temperature has risen is formed in the central part of the suspended ceiling plate between the front end and the rear end of the compartment.

In the present invention, at the front end and the rear end of the passenger compartment, at the left and right central part of the suspended ceiling plate, the suction port for sucking the room air whose temperature has risen is formed. By sucking the room air, which has accumulated in the ends and whose temperature has risen, from the suction ports formed in the left and right central portions of the suspended ceiling panel, the temperature inside the passenger compartment can be made more uniform. In other words, after the conditioned air blown from the air outlet circulates in the vertical direction to equalize the temperature in the passenger compartment, the room air, which has become lighter due to the rise in temperature, flows along the suspended ceiling panel in the direction opposite to the traveling direction of the vehicle. It moves in the direction and stays at the front or rear end of the passenger compartment. Therefore, by sucking the indoor air that has accumulated in the front or rear end of the cabin and whose temperature has risen from the suction ports formed in the center of the suspended ceiling plate at the front and rear ends of the cabin, , the temperature in the passenger compartment can be made more uniform.

(4) In the railway vehicle described in (2) or (3),
Below the air outlet, an interior light for indirect lighting is mounted from a gap between the left and right ends of the suspended ceiling plate and the ceiling plate for air conditioning, and the direction of air discharge from the air outlet is aligned with the lighting direction of the room light. It is characterized by approximately matching.

In the present invention, an interior light for indirect lighting is mounted below the air outlet through a gap between the left and right ends of the suspended ceiling panel and the ceiling panel for air conditioning, so that the air outlet direction is aligned with the lighting direction of the interior light. Since they are substantially aligned, the air-conditioning ceiling plate, which is formed in a smooth curved shape from the side structure side of the roof structure to the upper end of the side window, functions as a guide plate that forms a laminar flow of conditioned air blown from the air outlet. At the same time, it can also serve as a reflector for interior lighting that indirectly illuminates from the gap between the left and right ends of the suspended ceiling panel and the ceiling panel for air conditioning. Therefore, by increasing the number of functions of the ceiling panel for air conditioning, it is possible to improve the appearance (design) of the interior of the vehicle and reduce the cost of the vehicle as a whole. In addition, since the blowing direction of the air outlet and the illumination direction of the room light are substantially the same, the temperature rise of the air-conditioning ceiling plate caused by the lighting heat of the room light can be suppressed by the conditioned air blown from the air outlet. can. Therefore, it is possible to alleviate the feeling of warmth due to radiant heat from the wall surface of the ceiling panel for air conditioning.

According to the present invention, there is a risk of noise problems in a railway vehicle having a side window for observation without a luggage rack extending from the side structure above the window side seat of the car body having the aisle side seat and the window side seat. It is possible to provide a railway vehicle that can improve the thermal environment of the window side seats substantially evenly, and that can make the temperature in the passenger compartment uniform with a simple structure.

1 is a vertical cross-sectional view of a railway vehicle according to an embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. 1; FIG. 3 is a detailed cross-sectional view of a B portion shown in FIG. 2; 4 is a view in the direction of arrow C shown in FIG. 3; FIG. FIG. 2 is a cross-sectional view taken along the line DD shown in FIG. 1; 2 is a cross-sectional view taken along line EE shown in FIG. 1; FIG. FIG. 2 is a wind velocity distribution diagram of conditioned air blown from an air outlet of the railroad vehicle shown in FIG. 1; FIG. 2 is a room temperature distribution map during cooling of the railway vehicle shown in FIG. 1 ; 1 is a cross-sectional view of a railway vehicle described in Patent Literature 1; FIG. FIG. 2 is a partial cross-sectional view of a railway vehicle described in Patent Document 2; 1 is a longitudinal sectional view of a railway vehicle described in Patent Literature 2; FIG.

Next, rail vehicles according to embodiments of the present invention will be described in detail with reference to the drawings. Specifically, after describing in detail the vehicle configuration related to the air conditioning of the railroad vehicle according to the present embodiment, the fluid analysis (CFD: Computational Fluid Dynamics) results of the conditioned air in the railroad vehicle will be described.

<Vehicle configuration related to air conditioning of this railway vehicle>
First, the vehicle configuration related to the air conditioning of the railway vehicle according to the present embodiment will be described with reference to FIGS. 1 to 6. FIG. FIG. 1 shows a vertical cross-sectional view of a railway vehicle according to an embodiment of the present invention. FIG. 2 shows a cross-sectional view taken along the line AA shown in FIG. FIG. 3 shows a detailed cross-sectional view of the B portion shown in FIG. However, the air conditioner 53 and return ducts 56 and 57 are not shown. FIG. 4 shows a view in the direction of arrow C shown in FIG. FIG. 5 shows a cross-sectional view taken along line DD shown in FIG. FIG. 6 shows a cross-sectional view along EE shown in FIG.

As shown in FIG. 1, a vehicle body 1 of a railroad vehicle 10 according to the present embodiment is divided into an observation room 1A provided on the front side of the vehicle and a general room 1B provided on the rear side of the vehicle. The observation room 1A and general room 1B communicate with each other through an intermediate room 1C. An operator's cab 1D is formed above the observatory 1A, and the ceiling of the observatory 1A is lower than that of the general room 1B. Here, the vehicle configuration of the general room 1B and its air-conditioning operation will be described in detail.

As shown in FIGS. 1 to 6, this railway vehicle 10 has an aisle seat 22 and a window seat 23 in a passenger compartment 11 of a general compartment 1B. It does not have an enclosed luggage rack and has a side window 32 for viewing. Specifically, the railway vehicle 10 includes an underframe 2 , a side structure 3 , a roof structure 4 , and an air conditioner 5 that form a vehicle body 1 . The air conditioner 5 is arranged on the roof structure 4 . An aisle side seat 22 and a window side seat 23 are symmetrically arranged on the floor 21 of the underframe body 2 with the central aisle interposed therebetween. The side structure 3 is erected from the left and right ends (side beams) 24 of the underframe 2, and a side window 32 for viewing is attached to the upper and lower intermediate portions of the side structure 3. As shown in FIG. The air conditioner 5 also includes an air outlet 51 , an air conditioning duct 52 , an air conditioner 53 , air inlets 54 and 55 , and return ducts 56 and 57 .

Further, the side window 32 is formed in a substantially planar shape along the side structure 3 . The side window 32 is formed to be 20 to 30% larger in the vertical direction than the side window of an ordinary vehicle, similar to the side window of the observatory 1A, in order to ensure a good field of view in the vertical direction. The side window 32 is formed continuously with a suitably formed blowing-up portion 34 in between in the rail direction, so that a dynamic view can be enjoyed. The blowing-up portion 34 is smoothly connected to a lower end portion 432 of an air-conditioning ceiling plate 43, which will be described later. Below the side window 32 , a window lower interior plate 33 is smoothly formed along the side structure 3 from the lower end 322 of the side window 32 to the floor 21 .

The roof structure 4 is connected to the upper end 31 of the side structure 3, and below the roof structure 4, an air conditioner is formed in a smoothly curved shape from the side structure side 41 of the roof structure 4 to the side window upper end 321. A ceiling panel 43 is provided. Here, the side structure side 41 of the roof structure 4 means the position of the roof structure 4 that is midway between the vehicle center CL and the upper end portion 31 of the side structure 3, and the upper end portion 31 of the side structure 3 from the vehicle center CL. A position close to is preferred. The air-conditioning ceiling plate 43 has an upper end portion 431 formed substantially parallel to the roof structure 4 and a lower end portion 432 formed substantially parallel to the side structure 3. A substantially circular arc is formed between the upper end portion 431 and the lower end portion 432 . They are continuously connected by a plane or a substantially paraboloid. The air-conditioning ceiling plate 43 is formed to have substantially the same cross section in the rail direction.

Further, at the side structure side 41 of the roof structure 4, an outlet 51 for blowing the conditioned air CA toward the side structure along the air conditioning ceiling plate 43 is arranged continuously in the rail direction. The air outlet 51 is formed in an L-shaped sheet metal 511 that abuts on the tip of a cylindrical body that protrudes from the side wall of the air conditioning duct 52 arranged symmetrically under the roof structure 4 . . The L-shaped sheet metal 511 is connected to the roof structure 4 together with the upper end portion 431 of the ceiling plate 43 for air conditioning. The upper end of the outlet 51 is fixed at substantially the same height as the lower surface of the upper end portion 431 of the ceiling plate 43 for air conditioning. The outlet 51 has a flat rectangular cross-section whose length in the vertical direction is shorter than its length in the rail direction (for example, as shown in FIG. 15) and formed continuously along the longitudinal direction of the air conditioning duct 52 .

With the above configuration, the conditioned air CA is blown in a laminar flow from the outlet 51 toward the side window upper end portion 321 along the lower surface of the air-conditioning ceiling plate 43 . The conditioned air CA blown from the blowout port 51 flows smoothly downward along the side window 32 and mainly flows between the side window 32 and the passenger on the window side seat 23 . Therefore, even the passengers on the window side seats 23 are less likely to feel the draft feeling of the conditioned air CA. In addition, the conditioned air CA flowing downward along the side window 32 has just come out of the outlet 51, so it can flow while substantially maintaining the conditioned initial temperature. As a result, the air curtain AK of the conditioned air CA flowing vertically along the side window 32 in a laminar flow improves the performance of blocking heat and cold air from the side window 32, and improves the thermal environment of the window seat 23. .

Further, below the roof structure 4, a suspended ceiling plate 42 having left and right end portions 421 extending to below the air outlet 51 is provided. The left and right ends 421 of the suspended ceiling plate 42 may extend from the air outlet 51 toward the side structure. Further, the suspended ceiling plate 42 extends substantially horizontally from the front end portion 11A of the passenger compartment 11 to the rear end portion 11B. The air outlet 51 is blocked by the suspended ceiling plate 42 and cannot be seen by passengers. Between the left and right ends 421 of the suspended ceiling plate 42 and the upper end 431 of the air-conditioning ceiling plate 43, a gap 44 is formed with a substantially constant width in the rail direction through which the conditioned air CA blown from the outlet 51 flows. .

An air conditioning duct 52 extends along the rail direction in a gap 45 between the roof structure 4 and the suspended ceiling plate 42 . The air conditioning duct 52 is formed with a substantially rectangular cross section. The air-conditioning duct 52 is fixed to the suspended ceiling plate 42 and connected to the roof structure 4 via a suspension fitting 411 that supports the suspended ceiling plate 42 . The air conditioning duct 52 is connected to an air conditioner 53 fixed on the roof structure 4 .

With the above configuration, when the conditioned air CA blown from the air outlet 51 returns to the vicinity of the vehicle ceiling via the floor 21, the returning conditioned air CA and the blown conditioned air CA are prevented from merging near the air outlet 51. , can be avoided by the suspended ceiling plate 42, and can prevent the initial wind speed of the conditioned air CA from decreasing.

At the front end portion 11A and the rear end portion 11B of the compartment 11, suction ports 54 and 55 for sucking the room air RA whose temperature has risen are formed in the left and right central portions 422 of the suspended ceiling plate 42. As shown in FIG. The suction ports 54 and 55 are connected to an air conditioner 53 via return ducts 56 and 57 arranged in a gap 45 between the roof structure 4 and the suspended ceiling plate 42 . Indoor air RA sucked from the suction ports 54 and 55 is returned to the air conditioner 53 via return ducts 56 and 57 . The air conditioner 53 measures the temperature and humidity of the room air RA flowing inside the return ducts 56 and 57, and is controlled so that the conditioned air CA supplied from the air conditioner 53 to the outlet 51 has an appropriate temperature and humidity. ing.

With the above configuration, only the indoor air RA that has accumulated in the front end portion 11A or the rear end portion 11B of the passenger compartment 11 and has increased in temperature can be sucked from the suction ports 54 and 55 formed in the left and right central portions 422 of the suspended ceiling plate 42. Therefore, the temperature in the compartment 11 can be made more uniform. In addition, by forming suction ports 54 and 55 in the left and right central portions 422 of the suspended ceiling plate 42 at the front end portion 11A and the rear end portion 11B of the passenger compartment 11, the conditioned air CA blown from the blowout port 51 is directed to the side window side. This also has the effect of promoting indoor circulation of the conditioned air CA without interfering with the flow of air.

Further, below the air outlet 51, an interior light 6 is mounted for indirect lighting from a gap 44 between the left and right ends 421 of the suspended ceiling plate 42 and the ceiling plate 43 for air conditioning. The blowing direction of the blower outlet 51 and the lighting direction of the room light 6 are substantially the same. The interior lamp 6 is preferably, for example, an LED lamp continuously extending along the rail direction. Here, the air-conditioning ceiling plate 43 formed in a smoothly curved shape from the side structure side 41 of the roof structure 4 to the upper end portion 321 of the side window serves as a reflector for the indirect lighting of the room light (LED lighting) 6. Also serves as. Also, even if the room lamp 6 is an illumination lamp with a large amount of heat, the temperature rise of the air conditioning ceiling plate 43 caused by the illumination heat can be suppressed by the conditioned air CA blown from the outlet 51 . Therefore, it is possible to alleviate the feeling of warmth due to the radiant heat from the wall surface of the ceiling plate 43 for air conditioning.

<Fluid analysis result of conditioned air>
Next, the fluid analysis (CFD: Computational Fluid Dynamics) results of the conditioned air in this railway vehicle will be described with reference to FIGS. 7 and 8. FIG. FIG. 7 shows a wind velocity distribution diagram of the conditioned air blown from the air outlet of the railcar shown in FIG. FIG. 8 shows a room temperature distribution diagram during cooling of the railway vehicle shown in FIG.

(Wind speed distribution)
As shown in FIG. 7, the conditioned air CA blown from a pair of left and right air outlets 51 arranged near the side structure of the roof structure smoothly curves from the side structure side of the roof structure to the side window upper end 321. It reaches the side window 32 along the formed ceiling plate 43 for air conditioning, and passes along the side window 32 from above to below. At this time, the conditioned air CA blown from the outlet 51 flows with the initial wind speed H1 substantially maintained to the lower side of the side window 32, and maintains a state in which streamlines of substantially the same speed are parallel (laminar flow state). is doing.

Therefore, the conditioned air CA blown from the blowout port 51 flows along the side window 32 from above to below without stagnation, and mainly flows along the side window 32 between the side window 32 and the passenger on the window side seat 23. By forming an air curtain AK of the conditioned air CA that flows vertically in a laminar manner, it is possible to reliably improve the blocking performance against heat and cold air. In FIG. 7, the conditioned air CA that passed through the side window 32 on the right side of the drawing did not flow to the floor 21, but flowed over the seat surfaces of the window side seat 23 and the aisle side seat 22. If a passenger is seated on the floor, it is presumed that the conditioned air CA that has passed through the side window 32 will flow to the floor. In addition, since the wind velocity H2 above the central passage of the passenger compartment 11 is higher than that in the surrounding area, the conditioned air CA flowing vertically along the side window 32 in a laminar flow is It is presumed that after it flows to the aisle side of the floor center, it rises to the vicinity of the vehicle ceiling.

(Room temperature distribution)
Further, as shown in FIGS. 7 and 8, the conditioned air CA blown from the outlet 51 flows in a state where the initial temperature is substantially maintained from above to below the side window 32 . Therefore, a cold air layer S<b>1 with a constant temperature is formed inside the ceiling plate 43 for air conditioning and the side window 32 . Therefore, it is presumed that the heat entering from the side window 32 is blocked by the cold air layer S1 formed inside the side window 32. FIG. The heat blocked by the cold air layer S1 is released by the conditioned air CA, which flows vertically along the side window 32 in a laminar flow, flows toward the aisle in the center of the floor, and then rises to the vicinity of the vehicle ceiling. , are homogenized in the passenger compartment 11 . In addition, an indoor air layer S2 whose temperature has risen due to circulation remains in the lower part of the suspended ceiling plate 42 . Since the cold air layer S1 formed inside the side window 32 is mainly formed in the window frame of the side window 32, there is little possibility that the passenger sitting on the window seat 23 will feel uncomfortable. Although the room temperature distribution during cooling is shown here, the same effect can be obtained during heating.

<Effect>
According to the railway vehicle 10 according to the present embodiment, which has been described in detail above, the air-conditioning ceiling plate 43 is formed in a smoothly curved shape from the side structure side 41 of the roof structure 4 of the vehicle body 1 to the upper end portion 321 of the side window. In addition, at the side structure side 41 of the roof structure 4, a blowout port 51 for blowing conditioned air CA toward the side structure side along the air conditioning ceiling plate 43 is arranged continuously in the rail direction. The conditioned air CA blown from the air outlet 51 can be made to reach the side window 32 along the air conditioning ceiling plate 43 formed in a smooth curved shape, and can be passed from above to below along the side window 32 as it is. . Therefore, the conditioned air CA blown from the outlet 51 can flow mainly between the side window 32 and the passenger on the window side seat 23 from above to below the side window 32 without stagnation. Also, the conditioned air CA flowing downward from the upper side of the side window 32 has just come out of the outlet 51, so it can flow in a state where the conditioned initial temperature is substantially maintained. As a result, the air curtain AK of the conditioned air CA flowing vertically along the side window 32 in a laminar flow is formed while reducing the draft feeling of the conditioned air CA, and the heat and cold air from the side window 32 is blocked. can be improved.

Further, at the side structure side 41 of the roof structure 4, a blowout port 51 for blowing the conditioned air CA toward the side structure along the ceiling plate 43 for air conditioning is arranged continuously in the rail direction. The air curtain AK of the conditioned air CA flowing vertically along the side window 32 in a laminar flow can be formed continuously in the rail direction with uniform strength. Therefore, not only the window seat 23 positioned near the center of the side window 32 but also the window seat 23 positioned near the front end or the rear end of the side window 32 can be equally improved in air conditioning.

In addition, the conditioned air CA, which flows vertically along the side window 32 in a laminar flow, flows along the floor 21 toward the aisle at the center of the floor, and then rises to the vicinity of the vehicle ceiling. Then, the conditioned air CA that has risen to the vicinity of the vehicle ceiling moves downward in the passenger compartment 11 due to the conditioned air CA that flows downward from above the side window 32 . Therefore, by simply arranging the air outlet 51 on the side structure side 41 of the roof structure 4, the conditioned air CA blown from the air outlet 51 can be delivered to the vehicle via the ceiling plate 43 for air conditioning, the side window 32, and the floor 21. It is possible to vertically circulate the inside of the compartment 11 so as to return to the vicinity of the ceiling. As a result, it is possible to equalize the temperature in the passenger compartment 11 with a simple structure without complicating the air outlet 51, the air conditioning duct 52, and the like.

In addition, since the outlet 51 for blowing the conditioned air CA is arranged on the side structure side 41 of the roof structure 4 and there is no outlet 51 near the side window 32, the outlet 51 is far from the passengers. Therefore, even if the air volume and wind speed of the conditioned air CA blown from the air outlet 51 are increased, the noise from the air outlet 51 is less likely to reach passengers. As a result, the volume and speed of the conditioned air CA blown from the outlet 51 can be increased or decreased without making the passengers feel uncomfortable with the noise. An air curtain AK can be formed. In particular, in the railway vehicle 10 equipped with a wide side window (side window 32 for view) with a good view in the vertical direction, by adjusting the air volume and wind speed of the conditioned air CA blown from the air outlet 51, the window side seat 23 The thermal environment can be easily improved.

Therefore, according to the present embodiment, the side window 32 for viewing is provided on the window side seat 23 upper portion of the vehicle body 1 having the aisle side seat 22 and the window side seat 23 without the cargo shelf extending from the side structure 3. In the railway vehicle, it is possible to provide a railway vehicle 10 that can substantially evenly improve the thermal environment of the window seat 23 without fear of noise problems and make the temperature in the passenger compartment 11 uniform with a simple structure. .

Further, according to the present embodiment, since the suspended ceiling plate 42 having the left and right ends 421 extending to the lower side of the air outlet 51 is provided below the roof structure 4, the air outlet 51 can be directly seen from passengers. can be avoided. Further, when the conditioned air CA blown from the air outlet 51 returns to the vicinity of the ceiling of the vehicle via the floor 21, the joining of the returning conditioned air CA and the air-blown conditioned air CA in the vicinity of the air outlet 51 is suspended. This can be avoided by the ceiling plate 42, and the decrease in the initial wind speed H1 of the conditioned air CA can be prevented. Therefore, the exterior appearance (designability) of the interior of the passenger compartment 11 is improved, and at the same time, the air curtain AK of the conditioned air CA formed along the side window 32 is stabilized to block heat and cold air from the side window 32. It can improve performance.

Further, according to the present embodiment, the suction ports 54 and 55 for sucking the room air RA are formed in the left and right center portions 422 of the suspended ceiling plate 42 at the front end portion 11A and the rear end portion 11B of the passenger compartment 11. Therefore, by sucking the indoor air RA, which has accumulated in the front end portion 11A or the rear end portion 11B of the vehicle compartment 11 and whose temperature has increased, from the suction ports 54 and 55 formed in the left and right center portions 422 of the suspended ceiling plate 42, the vehicle The temperature in the chamber 11 can be made more uniform. That is, after the conditioned air CA blown from the outlet 51 circulates in the vertical direction to equalize the temperature in the passenger compartment 11, only the indoor air RA, which has become lighter due to the temperature rise, flows along the suspended ceiling plate 42. and moves in the direction opposite to the traveling direction of the vehicle, and stays at the front end portion 11A or the rear end portion 11B of the vehicle compartment 11 . Therefore, the indoor air RA, which has accumulated in the front end portion 11A or the rear end portion 11B of the passenger compartment 11 and has increased in temperature, is directed to the left and right center portions 422 of the suspended ceiling plate 42 at the front end portion 11A and the rear end portion 11B of the passenger compartment 11. By sucking air from the suction ports 54 and 55 formed, the temperature in the vehicle interior 11 can be made more uniform.

Further, according to the present embodiment, below the air outlet 51, the room light 6 for indirect lighting is mounted from the gap 44 between the left and right ends 421 of the suspended ceiling plate 42 and the air conditioning ceiling plate 43. Since the air blowing direction and the lighting direction of the room light 6 are almost the same, the air conditioning ceiling plate 43 formed in a smoothly curved shape from the side structure side 41 of the roof structure 4 to the side window upper end portion 321 can be used to blow the air. The room lamp 6 functions as a guide plate for forming a laminar flow of the conditioned air CA blown from the outlet 51, and at the same time, indirectly illuminates from the gap 44 between the left and right ends 421 of the suspended ceiling plate 42 and the air conditioning ceiling plate 43. It can also serve as a reflector. Therefore, by increasing the number of functions of the air-conditioning ceiling plate 43, it is possible to improve the appearance (design) of the interior of the passenger compartment 11 and at the same time reduce the cost of the vehicle as a whole. In addition, since the blowing direction of the air outlet 51 and the lighting direction of the room lamp 6 substantially match, the temperature rise of the air-conditioning ceiling plate 43 caused by the lighting heat of the room light 6 is eliminated by blowing conditioned air from the air outlet 51. It can be suppressed by CA. Therefore, it is possible to alleviate the feeling of warmth due to the radiant heat from the wall surface of the ceiling plate 43 for air conditioning.

<Modification>
Although the railcar 10 of the present embodiment has been described in detail above, the present invention is not limited to this, and various modifications can be made without departing from the scope of the invention. For example, the vehicle body 1 of the railcar 10 of the present embodiment is divided into an observation room 1A provided on the front side of the vehicle and a general room 1B provided on the rear side of the vehicle. The indoor space is communicated through the intermediate chamber 1C. However, it is not necessary to be limited to this, and, for example, a railway vehicle consisting only of a general room 1B may be used.

For example, the present invention relates to a railway vehicle having an aisle-side seat and a window-side seat in the passenger compartment, and is provided with a side window for viewing, without a luggage rack extending from the side structure above the window-side seat of the car body. It can be used as a railway vehicle that can improve the thermal environment of the seats.

Reference Signs List 1 car body 2 underframe 3 side structure 4 roof structure 5 air conditioner 6 room light 10 railway car 11 passenger compartment 11A front end 11B rear end 22 aisle seat 23 window seat 31 upper end 32 side window 41 side structure side 42 suspension Ceiling plate 43 Ceiling plate for air conditioning 44 Gap 51 Air outlet 54, 55 Suction port 321 Side window upper end 421 Left and right end 422 Left and right center CA Conditioned air RA Room air

Claims (4)

A railway vehicle having an aisle-side seat and a window-side seat in the passenger compartment, and provided with a side window for viewing, without a luggage rack extending from the side structure above the window-side seat of the vehicle body,
Below the roof structure of the vehicle body, an air conditioning ceiling plate is provided, which is formed in a smoothly curved shape from the side structure side of the roof structure to the upper end of the side window,
The air-conditioning ceiling plate has an upper end formed substantially parallel to the roof structure, a lower end formed substantially parallel to the side structure, and a substantially arc surface or arc surface between the upper end and the lower end. be connected continuously in a substantially paraboloid;
the side window is formed in a substantially planar shape only along the side structure;
the ceiling plate for air conditioning is formed to have substantially the same cross section in the rail direction;
an air outlet for blowing conditioned air toward the side structure along the ceiling plate for air conditioning is arranged continuously in the rail direction near the side structure of the roof structure;
blowing the conditioned air in a laminar flow from the air outlet toward the upper end of the side window along the lower surface of the ceiling plate for air conditioning;
Forming an air curtain of the conditioned air flowing vertically along the side window in a laminar flow continuously in the rail direction with uniform strength;
The railway, wherein the conditioned air blown from the air outlet flows smoothly from the top to the bottom along the side window, and mainly flows between the side window and the passenger in the window seat. vehicle. In the railway vehicle according to claim 1,
A railway vehicle, wherein a suspended ceiling plate having left and right ends extending to a lower portion of the air outlet is provided below the roof structure. In the railway vehicle according to claim 2,
A railway vehicle according to claim 1, wherein a suction port for sucking indoor air whose temperature has risen is formed at a left-right central portion of the suspended ceiling plate at a front end portion and a rear end portion of the vehicle compartment. In the railway vehicle according to claim 2 or claim 3,
Below the air outlet, an interior light for indirect lighting is mounted from a gap between the left and right ends of the suspended ceiling plate and the ceiling plate for air conditioning, and the direction of air discharge from the air outlet is aligned with the lighting direction of the room light. A railway vehicle characterized by substantially matching.

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