Air supply system and rail vehicle

Abstract

The application provides an air supply system and a rail vehicle. The air supply system applied to a rail train comprises: at least two air conditioning units arranged at two ends of a carriage away from each other along the length direction of the carriage; a first air duct configured to guide air flow output by the air conditioning units to a region in the carriage between the at least two air conditioning units; and at least two air guide mechanisms configured to communicate with the first air duct and guide air flow output by one air conditioning unit to a region in the carriage below another air conditioning unit.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more particularly to an air supply system and a rail vehicle. Background Technology

[0002] In rail vehicles, an air conditioning unit is usually installed at each end of each passenger car along the length of the car. The two air conditioning units supply air to each other through the air ducts on the top of the car to meet the requirements of ventilation, cooling and auxiliary heating of the passenger car.

[0003] However, when one air conditioning unit malfunctions and fails to deliver air, the airflow from the remaining air conditioning unit cannot penetrate the entire passenger compartment, creating a blind spot in the passenger compartment along the length of the vehicle, which affects passenger comfort.

[0004] Therefore, how to provide an air supply system that can reduce the blind spot of air supply has become an urgent technical problem to be solved. Summary of the Invention

[0005] To address at least one of the aforementioned and other technical problems in the prior art, the present invention provides an air supply system and a rail vehicle, wherein air guiding mechanisms are respectively provided on both sides of the first air duct to reduce air supply blind spots.

[0006] This invention provides an air supply system for use in rail vehicles. The air supply system includes: at least two air conditioning units disposed at opposite ends of a car along its length; a first air duct configured to guide airflow from the air conditioning units to an area within the car located between the at least two air conditioning units; and at least two air guiding mechanisms configured to communicate with the first air duct and guide airflow from one of the air conditioning units to an area within the car located below the other air conditioning unit.

[0007] According to an embodiment of the present invention, the first air duct is disposed between at least two air conditioning units, and a first partition is disposed in the first air duct, the first partition dividing the first air duct into two sub-air ducts, each of the two sub-air ducts being connected to the air outlet side of one of the air conditioning units.

[0008] According to an embodiment of the present invention, the first partition is arranged along the vehicle height direction to divide the first air duct into two sub-air ducts along the vehicle width direction.

[0009] According to an embodiment of the present invention, each of the above-mentioned air guiding mechanisms includes: a second air duct, disposed between one of the above-mentioned sub-air ducts and the air outlet side of one of the above-mentioned air conditioning units, wherein the sub-air duct is connected to the air outlet side of the above-mentioned air conditioning unit through the second air duct.

[0010] According to an embodiment of the present invention, each of the above-mentioned air guiding mechanisms further includes: a third air duct, disposed below the near end of the above-mentioned air conditioning unit, and connected to the air outlet side of the far end of the above-mentioned air conditioning unit through the above-mentioned sub-air duct.

[0011] According to an embodiment of the present invention, each of the above-mentioned air guiding mechanisms further includes: a second baffle, disposed in the second air duct, configured to guide a portion of the airflow flowing through the second air duct to the sub-air duct, and to guide another portion of the airflow flowing through the second air duct to the third air duct.

[0012] According to an embodiment of the present invention, the second partition includes: a first end located within the second air duct and extending to the air outlet side of the air conditioning unit at a proximal end; and a second end connected to the first end and configured to bend toward the third air duct.

[0013] According to an embodiment of the present invention, in the cross section formed along the vehicle height direction and the vehicle length direction, the cross section of the second partition is configured as a J-shaped structure; the portion above the first end is connected to the air inlet side of one of the sub-air ducts, and the portion below the first end is connected to the third air duct and merges with the air outlet side of another sub-air duct.

[0014] According to an embodiment of the present invention, the above-mentioned air guiding mechanism further includes: a third partition, disposed in the second air duct, configured to isolate the two sub-air ducts, and such that the lower part of the third partition forms a bypass air duct that connects one of the sub-air ducts to the third air duct.

[0015] According to an embodiment of the present invention, one end of the third partition is connected to the portion of the second end protruding into the second air duct, and the other end of the third partition is connected to the inner wall of the first air duct and the first partition.

[0016] According to an embodiment of the present invention, the portion surrounded by the third partition and the bottom and side walls of the sub-duct defines the bypass duct; in the cross-section formed along the vehicle width direction and the vehicle height direction, the cross-section of the bypass duct is configured as a triangle.

[0017] According to an embodiment of the present invention, the third air duct is provided with a plurality of air outlets at intervals along the length of the vehicle to guide the airflow in the third air duct to the vehicle compartment.

[0018] According to an embodiment of the present invention, the air supply system further includes: at least two static pressure chambers, the at least two static pressure chambers being respectively disposed on both sides of the first air duct along the vehicle width direction; each of the at least two static pressure chambers being connected to one of the sub-air ducts.

[0019] According to an embodiment of the present invention, the static pressure chamber is provided with a plurality of air outlets at intervals along the length of the vehicle to guide the airflow in the first air duct to the carriage.

[0020] The present invention also provides a rail vehicle, comprising: a carriage; and a ventilation system disposed on the top of the carriage.

[0021] According to embodiments of the present invention, an air supply system and rail vehicle are provided, wherein a first air duct is used to guide the airflow output by the air conditioning units to the area between two air conditioning units. Furthermore, at least two air guiding mechanisms are connected to the first air duct and guide the airflow generated by one air conditioning unit to the area below the other air conditioning unit. In this way, the air supply system can cover most of the area inside the car along the length of the vehicle, thereby reducing air supply blind spots. Attached Figure Description

[0022] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings.

[0023] Figure 1 A schematic diagram of the air supply system according to an embodiment of the present invention is shown;

[0024] Figure 2 yes Figure 1 The diagram shown is a simplified representation of the air supply system, omitting the air conditioning unit.

[0025] Figure 3 yes Figure 2 A partial sectional view of the air supply system along direction AA;

[0026] Figure 4 yes Figure 3 A magnified view of part C shown;

[0027] Figure 5 yes Figure 3 A magnified view of part D shown;

[0028] Figure 6 yes Figure 2 A partial sectional view of the air supply system along the BB direction.

[0029] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0030] 1. Air conditioning unit; 11. First air conditioning unit; 12. Second air conditioning unit;

[0031] 2. First air duct; 21. First sub-air duct; 22. Second sub-air duct; 23. First partition; 231. Bend end; 24. Bypass air duct;

[0032] 3. Static pressure chamber;

[0033] 4. Second air duct;

[0034] 5. Third air duct;

[0035] 6. Second partition; 61. First end; 62. Second end;

[0036] 7. Third partition. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0039] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0040] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0041] Figure 1 A schematic diagram of the air supply system according to an embodiment of the present invention is shown. Figure 2 yes Figure 1 The diagram shown is a simplified representation of the air supply system, omitting the air conditioning unit.

[0042] This invention provides an air supply system, referring to Figure 1 and Figure 2As shown, the vehicle includes at least two air conditioning units 1, a first air duct 2, and at least two air guiding mechanisms. The at least two air conditioning units 1 are located at opposite ends of the vehicle body along its length. The first air duct 2 is configured to guide the airflow output from the air conditioning units 1 to an area within the vehicle body located between the at least two air conditioning units 1. The at least two air guiding mechanisms are configured to communicate with the first air duct 2 and guide the airflow output from one air conditioning unit 1 to an area within the vehicle body located below the other air conditioning unit 1.

[0043] It should be noted that, referring to Figure 1 As shown, a rail vehicle's car has a body length (i.e., car length), body width (i.e., car width), and body height (i.e., car height). Different types of rail vehicle cars can be defined for different car lengths, widths, and heights, such as Type A, Type B, and Type C cars. Based on this, the length direction (e.g., ...) Figure 1 The vertical direction shown can be understood as the direction of extension of the carriage length, and the width direction (e.g., the direction of extension of the carriage width). Figure 1 The left and right directions shown can be understood as the extension direction of the width of the carriage, and the height direction (e.g.) Figure 1 The directions shown (facing the paper and away from the paper) can be understood as the extension directions of the carriage height. That is to say, the length direction, width direction, and height direction of the carriage are perpendicular to each other.

[0044] In the following embodiments, the dimensions of the vehicle length, width, and height can be understood accordingly, unless otherwise stated.

[0045] According to an embodiment of the present invention, referring to Figure 1 As shown, the air supply system includes two air conditioning units, specifically a first air conditioning unit 11 and a second air conditioning unit 12. More specifically, the first air conditioning unit 11 and the second air conditioning unit 12 are installed along the length of the vehicle on the roof of the passenger compartment. Furthermore, the air outlet sides of the first air conditioning unit 11 and the second air conditioning unit 12 are positioned opposite each other along the length of the vehicle. That is, the air outlet side of the first air conditioning unit 11 faces the second air conditioning unit 12, and the air outlet side of the second air conditioning unit 12 faces the first air conditioning unit 11. This allows the airflow output from the first air conditioning unit 11 and the second air conditioning unit 12 to be guided along the length of the vehicle to the other end of the passenger compartment.

[0046] According to an embodiment of the present invention, referring to Figure 1 and Figure 2As shown, a guide mechanism is provided at each end of the first air duct 2 along the length of the vehicle. Specifically, these two guide mechanisms are configured to guide the airflow output from the near-end air conditioning unit 1 into the first air duct 2, so that the airflow is transmitted along the length of the vehicle, and also to guide the airflow output from the far-end air conditioning unit 1 to below the near-end air conditioning unit 1. This allows the airflow output from either air conditioning unit 1 to essentially traverse the length of the vehicle compartment. The near-end air conditioning unit 1 can be understood as the air conditioning unit 1 closest to the guide mechanism. Taking the guide mechanism located near the lower end of the first air conditioning unit 11 and the first air duct 2 as an example, the first air conditioning unit 11 can be considered the near-end air conditioning unit 1, while the second air conditioning unit 12 can be considered the far-end air conditioning unit 1.

[0047] In this embodiment, the air supply system provided by the present invention includes a first air duct 2 and at least two air guiding mechanisms. The first air duct 2 is mainly used to guide the airflow output by the air conditioning unit 1 to the area between the two air conditioning units 1, thereby effectively avoiding air supply blind spots caused by the air conditioning units 1 being arranged at both ends of the carriage.

[0048] Building upon this, the air supply system is further equipped with at least two air guiding mechanisms connected to the first air duct 2. Their core function is to guide the airflow generated by one air conditioning unit 1 to the area below the other air conditioning unit 1. This cross-guiding method allows the airflow to cover most of the area along the length of the carriage (e.g., areas excluding those adjacent to the end walls). This significantly reduces blind spots in the air supply along the vehicle's length. Especially when one air conditioning unit 1 malfunctions, the airflow from the other air conditioning unit 1 can still penetrate the entire passenger compartment along the vehicle's length, thus meeting the carriage's air supply requirements and improving user comfort.

[0049] It should be noted that the specific structures of the first air conditioning unit 11 and the second air conditioning unit 12 described above are not considered as key points of protection in this invention. Any air conditioning unit 1 applicable to the carriages of rail vehicles may be selected for application. The air conditioning unit 1 described above should be equipped with a condenser, evaporator, blower, and air compressor to meet the relevant requirements for fresh air, cooling, and heating, as well as pipes and valves suitable for connecting these mechanisms; specific details will not be elaborated further.

[0050] Of course, the first air conditioning unit 11 and the second air conditioning unit 12 mentioned above are also respectively provided with return air sides (specifically, return air vents). Among them, the return air vents provided by the first air conditioning unit 11 and / or the second air conditioning unit 12 include, but are not limited to, the part located between the air conditioning unit 1 and the first air duct 2 and / or the part of the air conditioning unit 1 near the end wall, so that the exhaust gas located in the passenger room area can be returned to the corresponding air conditioning unit 1 nearby.

[0051] Figure 3 yes Figure 2 A partial sectional view of the air supply system along direction AA.

[0052] According to an embodiment of the present invention, referring to Figure 1 and Figure 3 As shown, the first air duct 2 is disposed between at least two air conditioning units 1. The first air duct 2 is provided with a first partition 23, which divides the first air duct 2 into two sub-air ducts, each of which is connected to the air outlet side of an air conditioning unit 1.

[0053] According to an embodiment of the present invention, referring to Figure 1 and Figure 3 As shown, the first partition 23 is arranged along the vehicle height direction to divide the first air duct 2 into two sub-air ducts along the vehicle width direction.

[0054] According to an embodiment of the present invention, referring to Figure 1 and Figure 3 As shown, the first air duct 2 is disposed between the first air conditioning unit 11 and the second air conditioning unit 12. Specifically, the first air duct 2 includes, but is not limited to, a housing configured as a generally cubic structure, the housing including an upper wall panel, a lower wall panel, and two side wall panels located between the upper and lower wall panels. The first air duct 2 has air inlets at both ends along the length of the vehicle, communicating (via an air guiding mechanism) with either the air outlet side of the first air conditioning unit 11 or the air outlet side of the second air conditioning unit 12.

[0055] According to an embodiment of the present invention, referring to Figure 1 and Figure 3 As shown, a first partition 23 is provided within the first air duct 2. This first partition 23 is disposed between the aforementioned upper and lower wall panels and extends along the vehicle length direction to the air inlets located on both sides of the first air duct. Specifically, the first partition 23 may include, but is not limited to, being disposed along the vehicle height direction; that is, the first partition 23 may be perpendicular to the upper and lower wall panels. In this way, the internal space defined by the first air duct 2 can be divided into two isolated first sub-air ducts 21 and second sub-air ducts 22, which are formed along the vehicle width direction on both sides of the first partition 23. It should be understood that the embodiments of the present invention are not limited to this.

[0056] For example, the first partition 23 can also be inclined along the vehicle height direction;

[0057] Alternatively, the first partition 23 may extend along the plane formed by the length and width of the vehicle to divide the first air duct 2 into a first sub-air duct 21 and a second sub-air duct 22 stacked along the height of the vehicle.

[0058] According to an embodiment of the present invention, referring to Figure 1 and Figure 3As shown, the first partition 23 is, but is not limited to, disposed in the middle of the first air duct 2. In detail, in the cross-section formed along the vehicle height direction and the vehicle width direction, the cross-section formed by the first sub-air duct 21 and the cross-section formed by the second sub-air duct 22 are symmetrical about the first partition 23 as the axis of symmetry. If the thickness of the first partition 23 is ignored, it can be considered that the cross-sectional areas of the first sub-air duct 21 and the second sub-air duct 22 are equal and are half of the cross-sectional area of ​​the first air duct 2.

[0059] In this implementation, when the air volume of the airflow output by the air conditioning unit 1 remains unchanged, since the cross-sectional area of ​​the sub-duct (i.e., the first sub-duct 21 or the second sub-duct 22) connected to it is only half of the total cross-sectional area of ​​the first duct 2, the airflow velocity in the sub-duct can be increased so that the airflow can propagate to a longer distance along the vehicle length direction (such as propagating to the area below the air conditioning unit 1 located at the far end). In this way, it can prevent the airflow from failing to meet the requirements of long-distance transmission due to the attenuation of the airflow velocity.

[0060] According to an embodiment of the present invention, referring to Figure 1 As shown, the air supply system also includes at least two static pressure chambers 3, which are respectively disposed on both sides of the first air duct 2 along the vehicle width direction. Each of the at least two static pressure chambers 3 is connected to a sub-air duct.

[0061] According to an embodiment of the present invention, referring to Figure 1 As shown, the static pressure chamber 3 is provided with multiple air outlets at intervals along the length of the vehicle to guide the airflow in the first air duct 2 to the carriage.

[0062] According to an embodiment of the present invention, referring to Figure 1 As shown, the air supply system has two static pressure chambers 3, which are respectively located on both sides of the first air duct 2. In detail, the two static pressure chambers 3 extend along the length of the vehicle, one of which is connected to the first sub-air duct 21, while the other is connected to the second sub-air duct 22.

[0063] According to an embodiment of the present invention, the static pressure chamber 3 has a vent communicating with a sub-air duct (i.e., a first sub-air duct 21 or a second sub-air duct 22) and an air outlet communicating with the passenger compartment area inside the carriage. Furthermore, a guide vane is also provided inside the static pressure chamber 3 so that the airflow entering the static pressure chamber 3 through the vent can be guided by the guide vane and then sequentially output outward through the air outlet.

[0064] In this implementation, based on the cross-sectional design of the first sub-duct 21 and the second sub-duct 22, the airflow has a higher velocity when flowing through the sub-ducts. This results in greater flow resistance and potentially more noise. Therefore, the air supply system provided by this invention also includes a static pressure chamber 3. A guide vane installed within the static pressure chamber 3 effectively guides the airflow and reduces turbulence, thus making the air supply process smoother and reducing aerodynamic noise, thereby improving the passenger experience.

[0065] Figure 4 yes Figure 3 A magnified view of part C shown. Figure 5 yes Figure 3 A magnified view of part D shown.

[0066] According to an embodiment of the present invention, referring to Figure 4 and Figure 5 As shown, each air guiding mechanism includes a second air duct 4. The second air duct 4 is disposed between a sub-air duct and the air outlet side of an air conditioning unit 1, and the sub-air duct is connected to the air outlet side of the air conditioning unit 1 through the second air duct 4.

[0067] According to an embodiment of the present invention, referring to Figure 4 and Figure 5 As shown, each air guiding mechanism also includes a third air duct 5. The third air duct 5 is located below the near-end air conditioning unit 1 and is connected to the air outlet side of the far-end air conditioning unit 1 through a sub-air duct.

[0068] According to an embodiment of the present invention, referring to Figure 4 and Figure 5 As shown, the air guiding mechanisms connected to the first sub-air duct 21 and the second sub-air duct 22 are illustrated respectively. These air guiding mechanisms can be understood as being symmetrically arranged with respect to the midpoint of the first air duct 2.

[0069] According to an embodiment of the present invention, referring to Figure 4 and Figure 5 As shown, two second air ducts 4 are each disposed at one end of the first air duct 2 and between the first air conditioning unit 11 or the second air conditioning unit 12. If the first air duct 2 is regarded as the main air duct of the air supply system, the second air duct 4 can be regarded as a guide air duct connecting the air conditioning unit 1 and the first air duct 2. The second air duct 4 is mainly configured to guide the airflow output by the air conditioning unit 1 (the airflow can be fresh airflow, cooled airflow, or heated airflow). It can also be used to adjust the relevant parameters of the airflow, specifically at least one of velocity, direction, and cross-sectional area of ​​the air duct, which will be described in detail in the following embodiments.

[0070] According to an embodiment of the present invention, referring to Figure 4 and Figure 5As shown, two third air ducts 5 are respectively located below the first air conditioning unit 11 and the second air conditioning unit 12. Specifically, the air inlet side of the third air duct 5 is connected to the second air duct 4, while the air outlet side of the third air duct 5 extends away from the second air duct 4 (e.g., extending to a position near the end wall of the carriage). In this way, the third air duct 5 can serve as an auxiliary air duct for supplying air to the lower part of the air conditioning unit 1.

[0071] In other words, in the above-described implementation, the first air duct 2, the third air duct 5, and the second air duct 4 respectively form a main air duct for supplying air to the center of the passenger area, an auxiliary air duct for supplying air to the area below the air conditioning unit, and a guide air duct for connecting the main air duct and the auxiliary air duct in the air supply system. Thus, without adjusting the structure of the air conditioning unit 1, the problem of the inability to supply air to the outside from the bottom of the air conditioning unit 1 is effectively solved, further reducing the air supply blind spot.

[0072] According to an embodiment of the present invention, referring to... Figure 4 and Figure 5 As shown, each air guiding mechanism also includes a second baffle 6. The second baffle 6 is disposed within the second air duct 4 and is configured to guide a portion of the airflow flowing through the second air duct 4 to a sub-air duct, and to guide another portion of the airflow flowing through the second air duct 4 to a third air duct 5.

[0073] According to an embodiment of the present invention, referring to... Figure 4 and Figure 5 As shown, the second partition 6 includes a first end 61 and a second end 62. The first end 61 is located within the second air duct 4 and extends to the air outlet side of the near end of the air conditioning unit 1. The second end 62 is connected to the first end 61 and is configured to bend towards the third air duct 5.

[0074] According to an embodiment of the present invention, referring to... Figure 4 and Figure 5 As shown, in the cross-section formed along the vehicle height and length directions, the cross-section of the second partition 6 is configured as a roughly J-shaped structure. The portion above the first end 61 is connected to the air inlet side of a sub-air duct, the portion below the first end 61 is connected to the third air duct 5, and merges with the air outlet side of another sub-air duct through the area below the second end 62.

[0075] According to an embodiment of the present invention, referring to... Figure 4 and Figure 5 As shown, the second partition 6 is configured as a plate-shaped structure. Specifically, the first end 61 and the second end 62 of the second partition 6 are, but are not limited to, integrally bent forms, wherein the first end 61 is located within the second air duct 4, and the second end 62 extends downward into the third air duct 5. Furthermore, the width of the second partition 6 can be configured to be the same as the internal width of the second air duct 4.

[0076] According to an embodiment of the present invention, referring to... Figure 4 and Figure 5 As shown, the first end 61 of the second partition 6 divides the second air duct 4 into upper and lower parts. The upper part connects to a sub-air duct (such as the first sub-air duct 21), and the lower part connects to the third air duct 5. Similarly, the second end 62 also divides the air inlet side of the third air duct 5 into upper and lower parts. The upper part connects to the second air duct 4, and the lower part connects the third air duct 5 to another sub-air duct (such as the second sub-air duct 22). It should be noted that the cross-sectional areas of the two parts of the second air duct 4 formed by the division via the first end 61 can be configured to be approximately the same, and the cross-sectional areas of the two parts of the third air duct 5 formed by the division via the second end 62 can also be configured to be approximately the same. It should be understood that the embodiments of the present invention are not limited thereto.

[0077] For example, the cross-sectional areas of the two parts formed by the second air duct 4 separated by the first end 61 can also be configured as 1:9, 2:8, 3:7, 4:6, 5:5 and other arbitrary ratios.

[0078] Alternatively, the cross-sectional areas of the two parts formed by the third air duct 5 separated by the second end 62 can also be configured as 1:9, 2:8, 3:7, 4:6, 5:5 and other arbitrary ratios.

[0079] In this implementation, the second air duct 4 and the third air duct 5 are respectively divided into two parts by the second partition 6. The ratio of the cross-sectional areas of the two parts separated by the first end 61 can be adjusted to regulate the ratio of airflow entering one sub-duct (such as the first sub-duct 21) and the third air duct 5. Similarly, the ratio of the cross-sectional areas of the two parts separated by the second end 62 can be adjusted to regulate the ratio of airflow entering the third air duct 5 and airflow entering through another sub-duct (such as the second sub-duct 22) and the third air duct 5. Since the sub-ducts of the above-mentioned air supply system basically run through the length of the vehicle, there will inevitably be a decrease in airflow and / or air velocity at the far end of the air supply. Based on this, by distributing a portion of the airflow output from the near-end air conditioning unit 1 through the second partition 6, this portion of airflow can be mixed with the airflow output from the far-end air conditioning unit 1 to compensate for the decrease in airflow and / or air velocity, ensuring that the lower part of the air conditioning unit 1 can still adequately supply air to the outside.

[0080] Figure 6 yes Figure 2 A partial sectional view of the air supply system along the BB direction.

[0081] According to an embodiment of the present invention, referring to Figures 4 to 6As shown, the air guiding mechanism also includes a third partition 7. The third partition 7 is disposed in the second air duct 4 and is configured to isolate the two sub-air ducts, and the lower part of the third partition 7 forms a bypass air duct 24 that connects one sub-air duct to the third air duct 5.

[0082] According to an embodiment of the present invention, referring to Figures 4 to 6 As shown, one end of the third partition 7 is connected to the part of the second end 62 that protrudes into the second air duct 4, and the other end of the third partition 7 is connected to the inner wall of the first air duct 2 and the first partition 23.

[0083] According to an embodiment of the present invention, referring to Figures 4 to 6 As shown, the portion enclosed by the third partition 7 and the bottom and side walls of the sub-duct defines the bypass duct 24. In the cross-section formed along the vehicle width and vehicle height directions, the cross-section of the bypass duct 24 is configured as a triangle.

[0084] According to an embodiment of the present invention, referring to Figures 4 to 6 As shown, the third air duct 5 is provided with multiple air outlets at intervals along the length of the vehicle to guide the airflow in the third air duct 5 to the passenger compartment.

[0085] According to an embodiment of the present invention, referring to Figures 4 to 6 As shown, the end of the third partition 7 away from the second partition 6 is configured to extend downward along the vehicle height direction. Furthermore, each of the opposite ends of the first partition 23 is provided with a bent end 231, which extends in a direction inclined to the vehicle length direction, so that the portion of the air conditioning unit 1 (i.e., the first air conditioning unit 11 or the second air conditioning unit 12) near the proximal end of the first sub-air duct 21 (and the second sub-air duct 22) forms a tapering structure towards the portion of the air conditioning unit 1 away from the proximal end. Even further, the portion located below the third partition 7 forms a bypass air duct 24 superimposed on the first sub-air duct 21 (and the second sub-air duct 22).

[0086] In other words, the airflow output from the near-end air conditioning unit 1 enters the corresponding sub-duct through the top of the third partition 7, while the airflow output from the far-end air conditioning unit 1 enters the third duct 5 through the bypass duct 24 below the third partition 7. Furthermore, since the portion of the first sub-duct 21 (and the second sub-duct 22) near the near-end air conditioning unit 1 (i.e., the first air conditioning unit 11 or the second air conditioning unit 12) gradually narrows towards the portion farther from the near-end air conditioning unit 1, the airflow velocity entering the corresponding sub-duct can be increased, thereby further increasing the airflow transmission distance.

[0087] The present invention also provides a rail vehicle, continuing with reference to... Figure 1 As shown, it includes the carriage and the air supply system. The air supply system is located on the top of the carriage.

[0088] Based on similar inventive concepts, the air supply system installed on the roof of the carriage in rail vehicles also has similar or identical features to the above-described embodiments, and also has similar or identical functions based on these features. Therefore, it will not be described in detail again.

[0089] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference in the accompanying drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are identified by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding the present invention.

[0090] The embodiments of the present invention have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of the invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention, and all such substitutions and modifications should fall within the scope of the invention.

Claims

1. An air supply system for a rail vehicle, comprising: The application relates to a vehicle air conditioning system, comprising: at least two air conditioning units (1) arranged at two ends of a vehicle cabin along a vehicle length direction; a first air duct (2) configured to guide air flow output by the air conditioning units (1) to a region of the vehicle cabin between the air conditioning units (1); at least two air guide mechanisms configured to communicate with the first air duct (2) and guide air flow output by one of the air conditioning units (1) to a region of the vehicle cabin below the other air conditioning unit (1); the first air duct (2) is arranged between the at least two air conditioning units (1), and a first partition (23) is arranged in the first air duct (2), the first partition (23) divides the first air duct (2) into two sub-air ducts, and each of the two sub-air ducts communicates with an air outlet side of one of the air conditioning units (1); the first partition (23) is arranged along a vehicle height direction to divide the first air duct (2) into the two sub-air ducts along a vehicle width direction; each of the air guide mechanisms comprises: a second air duct (4) arranged between one of the sub-air ducts and the air outlet side of one of the air conditioning units (1), the sub-air duct communicates with the air outlet side of the air conditioning unit (1) through the second air duct (4); a third air duct (5) arranged below the air conditioning unit (1) at a near end and communicating with the air outlet side of the air conditioning unit (1) at a far end through the sub-air duct; a second partition (6) arranged in the second air duct (4) and configured to guide part of air flow flowing through the second air duct (4) to the sub-air duct and guide another part of air flow flowing through the second air duct (4) to the third air duct (5).

2. The air supply system according to claim 1, wherein the second partition (6) comprises: a first end (61) located in the second air duct (4) and extending to the air outlet side of the air conditioning unit (1) at the near end; a second end (62) connected to the first end (61) and configured to bend towards the third air duct (5).

3. The air supply system of claim 2, wherein in a cross section formed along the vehicle height direction and the vehicle length direction, a cross section of the second partition (6) is configured as a substantially J-shaped structure; a part above the first end (61) communicates with an air inlet side of one of the sub-air ducts, and a part below the first end (61) communicates with the third air duct (5) and converges with an air outlet side of another of the sub-air ducts.

4. The air supply system of claim 2, wherein the air guide mechanism further comprises: a third partition (7) arranged in the second air duct (4) and configured to isolate the two sub-air ducts and form a bypass air duct (24) in a lower part of the third partition (7) to communicate one of the sub-air ducts with the third air duct (5).

5. The air supply system of claim 4, wherein one end of the third partition (7) is connected to a part of the second end (62) protruding into the second air duct (4), and the other end of the third partition (7) is connected to an inner wall of the first air duct (2) and the first partition (23).

6. The air supply system of claim 5, wherein a part surrounded by a bottom wall and a side wall of the sub-air duct and the third partition (7) defines the bypass air duct (24); in a cross section formed along the vehicle width direction and the vehicle height direction, a cross section of the bypass air duct (24) is configured as a triangle.

7. The air supply system of claim 1, wherein The third air duct (5) is provided with multiple air outlets at intervals along the vehicle length direction to guide the airflow in the third air duct (5) to the vehicle cabin.

8. The air supply system of claim 1, wherein Further comprising: At least two static pressure chambers (3) are respectively arranged on both sides of the first air duct (2) along the vehicle width direction. Each of the at least two static pressure chambers (3) is in communication with one of the sub-air ducts.

9. The air supply system of claim 8, wherein The static pressure chamber (3) is provided with multiple air outlets at intervals along the vehicle length direction to guide the airflow in the first air duct (2) to the vehicle cabin.

10. A rail vehicle, characterized by Comprising: A vehicle cabin; The air supply system according to any one of claims 1 to 9 is arranged on the top of the vehicle cabin.

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