Air diffusion system within a passenger cabin of a transport vehicle

Abstract

The present invention relates to an air diffusion system in a passenger cabin of a transport vehicle, the passenger cabin comprising at least two passenger seating areas distributed on both sides of a passenger aisle (12) which extends from an entrance (14) to an end (16) of the passenger cabin and is delimited with respect to each platform by means of profiles (18 A , 18 B ) disposed on each longitudinal edge of said aisle (12), the diffusion system being configured to extract a portion of the treated air which can be blown along a surface located above the window opening of the passenger cabin and to reinject this portion into the aisle through each profile capable of diffusing the extracted portion of treated air.

Description

[Technical Field]

[0001] The present invention relates to a transport vehicle having a passenger compartment, comprising an air diffusion system within the passenger compartment, the passenger compartment including at least two passenger seating areas distributed on both sides of a passenger passageway, the at least two passenger seating areas being elevated on platforms relative to the floor of the passageway, the passageway extending from the end of the passenger compartment to the entrance of the passenger compartment and being defined relative to each platform by means of profiles disposed on each longitudinal edge of the passageway, the floor of the platform being partially supported on the upper surface of the associated profile, the upper surface being opposite to the bottom of the profile that contacts the floor of the passageway, the diffusion system being capable of blowing treated air along a surface located above the window openings of the passenger compartment.

[0002] Such passenger vehicles (i.e. public transport vehicles) specifically correspond to railway vehicles, buses, trams, ships, airplanes, or any other vehicles constructed to transport multiple passengers and including a passageway that longitudinally separates at least two passenger seating areas. [Background Technology]

[0003] In passenger transport, especially railway passenger transport, the principle of air diffusion is known to be used, which involves blowing treated air along the surface above the windows of the passenger compartment of the transport vehicle. However, this air diffusion above the windows, while enabling effective air mixing at the platform, can cause a thermal dead zone in the passenger passageway.

[0004] In fact, simulations show that the airflow in the passageway is stagnant and the thermal gradient between the passageway and the platform is relatively large. As a result, the floor and wall temperatures in the passageway can be very low, around 2 to 3 degrees Celsius in an outside temperature of -20 degrees Celsius, which can cause discomfort to passengers.

[0005] To increase aisle temperature, known solutions include adding heated floors, where resistance keeps the floor at the desired temperature. However, this solution is not entirely satisfactory because its cost sometimes hinders its introduction, and its integration complexity is incompatible with the modularity of passenger cabin layouts that require aisle movement (i.e., translational movement) as needed, particularly based on passenger cabin comfort levels, such as first class and second class. In fact, changing the location of the aisle complicates the wiring for integrated heated floor panels and can lead to undesirable wiring slack.

[0006] Another solution involves blowing treated air into the passageway, which involves adding additional ducts and duct covers, but this solution is not entirely satisfactory in terms of related size and weight.

[0007] Therefore, the object of the present invention is to improve air diffusion within the passenger cabin in order to enhance the related passenger comfort. [Summary of the Invention]

[0008] Therefore, the subject of the present invention is a transport vehicle having a passenger compartment, comprising an air diffusion system within the passenger compartment, the passenger compartment including at least two passenger seating areas distributed on both sides of a passenger passageway, the at least two passenger seating areas being elevated on platforms relative to the floor of the passageway, the passageway extending from the end of the passenger compartment to the entrance of the passenger compartment and defined relative to each platform by means of profiles disposed on each longitudinal edge of the passageway, the floor of the platform being partially supported on the upper surface of the associated profile, the upper surface being opposite to the bottom of the profile that contacts the floor of the passageway, the diffusion system being capable of blowing treated air along a surface located above a window opening in the passenger compartment, wherein the diffusion system is configured to extract a portion of the treated air capable of being blown along the surface located above a window opening in the passenger compartment and re-inject that portion through each profile capable of diffusing the extracted portion of the treated air into the passageway.

[0009] The vehicle according to the invention may include one or more of the following features, either individually or in any technically possible combination:

[0010] - Each profile includes a divider along its entire length, which divides the profile's cross-section into an upper and a lower section. The upper section is dedicated to the flow of extracted, treated air, while the lower section is located at the bottom of the profile in contact with the floor of the passageway and is dedicated to securing the profile.

[0011] - The separator is a voile portion inside the profile;

[0012] - Each profile includes a diffusion area for diffusing the extracted portion of the treated air into the passageway.

[0013] The diffusion area is located near the entrance to the passenger compartment or near the end of the passenger compartment, such that for two profiles located on opposite sides of the same passageway, one of the profiles has a diffusion area near the entrance to the passenger compartment, and the other of the profiles has a diffusion area near the end of the passenger compartment.

[0014] The diffusion region comprises multiple orifices, each with an opening size of approximately 5 mm, distributed along a length of approximately 1500 mm. The area of ​​the diffusion region is approximately 0.01 m². 2 ;

[0015] According to the present invention, the portion of air extracted and re-injected into the passageway accounts for 3% to 6% of the total flow rate of the treated air generated by the air diffusion system;

[0016] - The system includes a virole at each end of the passenger compartment to allow the treated airflow to diffuse to reach, located in the upper region of the passenger compartment end, and includes an extraction duct at the outlet of each virole, all of which are located in front of the inlet of a room hood capable of blowing treated air along a surface above the window openings of the passenger compartment. The extraction duct is configured to force the extracted portion of air down along a recovery hood at the end of the passenger compartment and / or along a sound-absorbing device to each metal profile of the passageway.

[0017] - The extraction pipe includes a flexible connection area at at least one end for connection to the sleeve and / or the metal profile of the passageway, respectively;

[0018] - Each profile is made of aluminum and has a pyramid-shaped cross-section;

[0019] - The position and / or shape of the passageway within the passenger compartment is adjustable, and the shape can correspond to at least a rectangle or a Y-shape;

[0020] - The transport vehicle is a double-deck transport vehicle, wherein an air diffusion system is configured to be installed in a passenger compartment corresponding to the lower compartment of the transport vehicle. [Attached Image Description]

[0021] These features and advantages of the invention will become more apparent upon reading the following description, which is given by way of non-limiting example only and with reference to the accompanying drawings, wherein:

[0022] - Figure 1 This is a perspective schematic diagram of the air diffusion system according to the present invention;

[0023] - Figure 2 This is a schematic diagram of the cross-section of the metal profiles installed on both sides of the passenger passageway;

[0024] - Figure 3 yes Figure 1 An enlarged schematic diagram of the first part of the air diffusion system, which is located near the entrance of the passenger compartment of the transport vehicle;

[0025] - Figure 4 It is located at the end of the cabin. Figure 1 An enlarged schematic diagram of the second part of the air diffusion system, illustrating the process of drawing in air and then re-injecting it through... Figure 2 The location of each profile shown;

[0026] - Figure 5 yes Figure 1 A schematic diagram of the rear view of the air diffusion system shown.

Detailed Implementation Methods

[0027] In the remainder of this specification, the expression “approximately equal to” is understood as an equality of ±10%, that is, a change of up to 10%, and preferably also as an equality of ±5%, that is, a change of up to 5%.

[0028] Figure 1 An air diffusion system 10 for a transport vehicle with a passenger compartment according to the present invention is shown. This system 10 is installed within the passenger compartment (not shown) of the transport vehicle (not shown). The passenger compartment includes a passenger passageway 12 and at least two passenger seating areas (not shown) distributed on either side of the passageway 12, the at least two passenger seating areas being raised on a platform (not shown) relative to the floor of the passageway 12.

[0029] Specifically, the transport vehicle (not shown) is a double-decker transport vehicle, and the air diffusion system 10 according to the invention is configured to be installed in a passenger compartment corresponding to the lower compartment of the transport vehicle (e.g., a high-speed train railway vehicle).

[0030] The passageway 12 extends from the entrance 14 of the passenger cabin to the end 16 of the passenger cabin, and is traversed by profiles 18 disposed on each longitudinal edge of the passageway 12. A and 18 B (i.e., ground longitudinal beams) are defined relative to each platform (not shown), the floor of which is partially supported on the upper surface of the associated profile, the surface of which supports the platform and the profile 18 that contacts the floor of the passageway 12. A 18 B The bottoms are opposite.

[0031] Depending on a particular aspect, the location and / or shape of the passageway 12 within the passenger cabin is adjustable, and the shape may correspond at least to a rectangle or a Y shape, depending on the needs, especially the passenger cabin comfort level considered (e.g., first class, second class passenger comfort).

[0032] like Figure 1 As shown, each profile has 18 A and 18 B The lower part of the outer surface on the platform side (i.e., not on the passageway 12 side) has through holes 20 so that the tools required to fix them can pass through.

[0033] At the far end 16 of the passenger compartment, the air diffusion system 10 according to the invention includes a set of pipes 22 on each side in the upper region of the floor relative to the passageway 12. These pipes are generally not visible to passengers because they are covered by the passenger compartment décor (not shown).

[0034] Each set of ducts 22 includes a diffuser 24 capable of blowing treated air along a surface located above a window opening (not shown) in the passenger compartment, which forms a ventilation "bucket" above the platform of each passenger seating area. This diffusion of treated air through the vent 24 facilitates air mixing in the passenger seating area, but causes a thermal dead zone (i.e., no mixing) in the aisle 12.

[0035] Each set of pipes 22 also includes a sleeve 26 for the treatment airflow to be diffused into the passenger compartment. The sleeve 26 is located upstream of the room hood (not shown) and the room hood allows the treatment airflow received by the sleeve 26 to flow to the aforementioned diffuser 24.

[0036] According to the invention, the sleeve 26 to which the treated airflow to be diffused arrives includes an extraction conduit 28 at its outlet, the outlet being located entirely in front of the inlet of a room shroud capable of blowing treated air along a surface above the window opening of the passenger compartment via a diffuser 24. The extraction conduit 28 is configured to extract a portion of the treated air capable of being blown along the surface above the window opening of the passenger compartment and force this extracted portion of air down along a recovery shroud (not shown) at the end 16 of the passenger compartment and / or along a device such as a sound-absorbing device (not shown), particularly via a connecting area 30 shown at the end 16 of the compartment, to each metal profile 18 of the passageway 12. A 18 B .

[0037] In other words, according to the invention, the diffusion system 10 is configured to extract a portion of treated air that can be blown along a surface located above a window opening in the passenger compartment, and to allow that portion to pass through each profile 18 of the extracted portion capable of diffusing the treated air. A Or 18 B It is then re-injected into passageway 12.

[0038] Therefore, the present invention proposes to use profile 18 of passageway 12. A 18 B As a conduit.

[0039] like Figure 2 As shown, each profile has 18 A Or 18 BFor example, metal profiles, especially aluminum profiles, with a pyramidal cross-section (i.e., the cross-sectional dimensions decrease as the height relative to the ground increases), with holes 20 only in the lower part to allow the tools needed to secure them to pass through.

[0040] According to a particular aspect of the invention, each profile 18 A 18 B In the considered profile 18 A 18 B The profile includes a divider 32 along its entire length, which divides the cross-section of the profile into an upper portion 34 and a lower portion (i.e., below the divider 32). The upper portion 34 is dedicated to the flow of extracted treated air, while the lower portion is the profile 18 that contacts the floor of the passageway 12. A 18 B The bottom is specifically designed for the metal profile in question. A 18 B The fixation, as described later below. Figure 3 As shown, the air flowing within the upper part 34 can then be diffused, such as Figure 2 As indicated by the two arrows, through each profile 18 A 18 B It spread into passageway 12.

[0041] The partition is in particular installed with a non-zero inclination relative to the flat surface of the passageway 12 floor.

[0042] The inclination of the separator is configured to ensure that the upper part 34 is of a predetermined cross-section, and has an inclination angle of, for example, 45° to 90°.

[0043] For example, 18 in each profile A 18 B The shaded area of ​​the upper 34 section extending longitudinally is 20cm². 2 Up to 50cm 2 Between, preferably approximately equal to 30cm 2 The cross-sectional width is approximately 50 mm, and the maximum height is approximately 60 mm. It is specifically designed for the upper part 34 of the extracted treated airflow and the profile 18 in contact with the floor of the passageway 12. A 18 B The bottom is specifically designed for the metal profile in question. A 18 B The cumulative height of the fixed lower part (i.e., below the partition 32) is between 120mm and 150mm, for example, approximately 136mm. Specifically, such a partition 32 is the profile 18 under consideration. A 18 BThe internal warping creates a conduit (i.e., a profile 18 formed by being closed by the partition 32). A 18 B The upper cavity allows the extracted portion of the treated air to flow through the pipe, and even with the presence of fixing holes 20 at the bottom, it enables the use of each profile 18. A 18 B As an air diffuser within the passageway 12, such a partition 32 (i.e., the internal warping portion) particularly has the characteristics of the profile 18. A 18 B The same material as the material, i.e., aluminum, for example.

[0044] Figure 3 yes Figure 1 An enlarged schematic diagram of part III of the air diffusion system, located near entrance 14 of the passenger compartment of the transport vehicle.

[0045] In particular, Figure 3 18 of each profile are shown A 18 B This includes area 36, ​​which allows a portion of the extracted treated air to diffuse into the passageway 12. Such area 36 is particularly located on the profile wall in contact with the passageway 12.

[0046] More specifically, the diffusion area 36 is located near the entrance 14 of the passenger compartment, such as... Figure 3 China targets profile 18 B As shown, or located near the end of the passenger compartment 16 (not specifically for profile 18). A (as shown), so that for the two metal profiles 18 located on both sides of the passageway 12 A 18 B In this regard, one of these two metal profiles (here, profile 18) B It has a diffusion area 36 located near the entrance 14 of the passenger compartment, and the other of the two metal profiles (here, profile 18) A It has a diffusion area 36 (not shown) located near the end 16 of the passenger compartment. The two diffusion areas 36 are staggered within the passageway 12 (i.e., for profile 18). B The diffusion zone 36 is near the entrance and targets profile 18. A The diffusion zone 36 (near the end) enables the limitation of flow loss when attempting continuous blowing, while the primary requirement is to heat the entrance 14 and the end 16 of the passageway 12.

[0047] The diffusion zone 36 includes a plurality of orifices 38, the opening size of which (i.e., the size of the cross-section through which diffused air passes), and in particular, the height of the orifices (i.e., grooves) relative to the floor of the passageway 12, is preferably approximately 5 mm. These orifices 38 are distributed over a length of approximately 1500 mm for the diffusion zone 36, and the area of ​​the diffusion zone 36 is preferably approximately 0.01 m². 2 .

[0048] Figure 4 The illustration shows the partial extraction of treated air that can be blown along a surface above the window openings of the passenger compartment into the upper space of the passenger compartment, in order to re-inject this extracted portion of the treated air into the lower space of the passenger compartment, and according to the invention, this re-injection is through each profile 18 A Or 18 B The profile is capable of diffusing the extracted portion of the treated air into the passageway.

[0049] Specifically, according to the invention, the portion of air extracted and re-injected into the passageway accounts for 3% to 6% of the total flow rate of the treated air generated by the air diffusion system.

[0050] Therefore, according to the present invention, in addition to blowing treated air onto the window openings in the upper space of the passenger compartment, air is also blown into the aisle to increase the temperature of the walls and reduce the vertical gradient.

[0051] For example, the flow rate provided to the passenger cabin rooms is per side (i.e., through... Figure 1 Each of the two diffuser ports 24 shown is 900m 3 / h. According to the present invention, 50m is extracted from each side. 3 / h, and pass them through the metal profile 18 of the passageway 12. A 18 B The air is blown onto the floor, which significantly increases the wall temperature of the passageway 12 and thus improves the associated thermal comfort, while avoiding the need to heat the floor. Therefore, the principle of blowing through the passageway according to the invention is effective.

[0052] To achieve this, such as Figure 4 As shown, as previously described, a portion of the treated airflow in the room is extracted to inject it into the passageway 12. According to the invention, this extraction, particularly at 50m... 3 The extraction at / h is done directly in front of the room's pipe cover (e.g., Figure 4The outlet of the sleeve 26 (shown) is accessed via a piping system, where a portion of the airflow is forced down along the recovery hood or sound-absorbing device into the extraction pipe 28. Therefore, according to the invention, an additional function is introduced within the recovery hood / sound-absorbing device: participation in the extraction from the sleeve 26 located in the upper space of the passenger compartment, the vertical transport of this extracted air, and its reinjection into the metal profile 18 of the passageway 12. A 18 B .

[0053] Depending on the specific aspect, the extraction pipe 28 has a flexible connection area 40 at the bottom to allow it to connect with the metal profile 18. A 18 B Connection. This flexible connection area 40 specifically corresponds to the flexible folding pipe section sleeve.

[0054] Figure 5 yes Figure 1 The diagram shows a partial rear view of the air diffusion system, and illustrates the recovery duct / sound-absorbing device descending from each of the two sleeves 26 via the associated extraction duct 28 through the end 16 of the passenger compartment to the junction area 30, to feed each profile 18 of the passageway 12 respectively. A 18 B 18 units of each profile will be supplied. A 18 B Each connection area 30 corresponds to the lower end of the extraction pipe 28 (i.e., located in the lower space of the passenger compartment). According to a particular aspect, the feed profile 18... A Or 18 B This connection area 30 is specifically the flexible connection area corresponding to the flexible folding pipe section sleeve.

[0055] Those skilled in the art will understand that the present invention is not limited to the described embodiments, nor to the specific examples in this specification, and that the above embodiments and variations can be combined with each other to produce new embodiments of the present invention.

[0056] This invention thus enables the improvement of passenger climate comfort without the introduction of additional piping, and also makes it possible to avoid adding heated floors to meet climate comfort requirements.

[0057] In other words, the present invention solves the problem of thermal comfort by controlling costs by avoiding the addition of heated floors, and by significantly limiting the number of parts to be added by using existing components (the profiles of the passageway (i.e., the floor beams)) and adding new functions to them.

[0058] Therefore, the present invention enables the elimination of cold spots on the floor of passageway 12 without the addition of a heated floor, limiting the number of additional parts required by using existing components for other functions.

[0059] The present invention also enables an airflow concept that does not require air transfer between the room (i.e., the room of the passenger cabin) and the platform (i.e., the entrance / exit gate for passengers to board the transport vehicle). This avoids having a large gap (about 15 to 20 mm) under the door at the entrance of the room (i.e., the entrance / exit from the platform to the passenger cabin), which is detrimental to the acoustic comfort of the room.

[0060] Therefore, use passageway profile 18 A 18 B As an air diffuser, it eliminates the need for additional tubing beneath the platform in the passenger seating area to diffuse into the aisle, while significantly improving the temperature of the walls of the passageway 12, as observed with heated floors, but without the constraints and costs associated with such a solution. In other words, this innovation enables the achievement of the desired thermal comfort without the need for heated floors (a more expensive solution).

Claims

1. A transport vehicle having a passenger compartment, comprising an air diffusion system (10) within the passenger compartment, the passenger compartment including at least two passenger seating areas distributed on both sides of a passenger passageway (12), the at least two passenger seating areas being raised on a platform relative to the floor of the passageway. The passageway extends from the entrance (14) of the passenger compartment to the end (16) of the passenger compartment, and is constructed by means of profiles (18) placed on each longitudinal edge of the passageway (12). A 18 B Each platform is defined, with the platform's floor partially supported on the upper surface of the associated profile, which is opposite the bottom of the profile that contacts the floor of the passageway. The diffusion system can blow treated air along the surface located above the window openings in the passenger compartment. Its features are, The diffusion system is configured to extract a portion of treated air that can be blown along a surface located above the window openings of the passenger compartment, and to allow the extracted portion to pass through each profile (18) of the extracted portion capable of diffusing the treated air. A 18 B ) and then re-injected into the passageway (12).

2. The vehicle according to claim 1, wherein, Each profile (18) A 18 B The profile includes a divider (32) along its entire length, which divides the cross-section of the profile into an upper (34) and a lower part, the upper part being dedicated to the extraction of treated airflow, and the lower part being at the bottom of the profile in contact with the floor of the passageway and dedicated to securing the profile.

3. The vehicle according to claim 2, wherein, The separator (32) is the warped portion inside the profile.

4. The vehicle according to any one of claims 1-3, wherein, Each profile (18) A 18 B This includes a diffusion area (36) for diffusing the extracted portion of the treated air into the passageway. The diffusion area is located near the entrance of the passenger compartment or near the end of the passenger compartment, such that for two profiles located on both sides of the same passageway (12), one of the profiles has a diffusion area near the entrance (14) of the passenger compartment, and the other of the profiles has a diffusion area near the end (16) of the passenger compartment. The diffusion region (36) includes multiple orifices (38) with an opening size of 5 mm, distributed along a length of 1500 mm, and the area of ​​the diffusion region is 0.01 m². 2 .

5. The vehicle according to any one of claims 1-3, wherein, The portion of air extracted and re-injected into the passageway (12) accounts for 3% to 6% of the total flow of treated air generated by the air diffusion system.

6. The vehicle according to any one of claims 1-3, wherein, The system includes a sleeve (26) at each end of the passenger compartment to allow the treated airflow to diffuse to reach, the sleeve being located in the upper region of the passenger compartment end, and an extraction pipe (28) at the outlet of each sleeve, all of which are located in front of the inlet of a room hood capable of blowing treated air along a surface above the window opening of the passenger compartment, the extraction pipe being configured to force the extracted portion of air down along a recovery hood located at the end of the passenger compartment and / or along a sound-absorbing device to each metal profile of the passageway respectively.

7. The vehicle according to claim 6, wherein, The extraction conduit (28) includes a flexible connection area (40) at at least one end for connection to the profile (18) of the sleeve (26) and / or passageway (12), respectively. A 18 B ).

8. The vehicle according to any one of claims 1-3, wherein, Each profile (18) A 18 B It is made of aluminum and has a pyramid-shaped cross section.

9. The vehicle according to any one of claims 1-3, wherein, The position and / or shape of the passageway (12) in the passenger compartment is adjustable, and the shape can correspond to at least a rectangle or a Y shape.

10. The vehicle according to any one of claims 1-3, wherein, The transport vehicle is a double-deck transport vehicle, wherein an air diffusion system is configured to be installed in a passenger compartment corresponding to the lower compartment of the transport vehicle.

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