Side entry air duct system for rail vehicles

Abstract

The present application provides a side entry air duct system for a rail vehicle, comprising an air duct body, an air inlet channel arranged at a top end of the air duct body and allowing fresh air to enter, and air outlet channels arranged at both sides of the air duct body and used for guiding the fresh air into a passenger compartment.

Description

Technical Field

[0001] This invention relates to the field of ventilation systems for rail and subway vehicles, and more specifically to a side-introduced air duct system for rail vehicles. Background Technology

[0002] As a vital component of modern urban transportation, the comfort and air quality of the internal environment of urban rail transit systems are of paramount importance. The ventilation system plays a crucial role in this, regulating airflow, temperature, and humidity within the carriages to provide passengers with a pleasant travel experience.

[0003] With the continuous development of urban rail transit technology, the requirements for ventilation systems are also increasing. Early ventilation designs were relatively simple, mainly focusing on basic ventilation functions. However, with the increase in train speed, passenger flow, and passenger demand for comfort, ventilation technology faces many challenges. Currently, urban rail transit ventilation structures generally use a bottom-outlet airflow method; however, with the addition of an internal ceiling panel and other air supply methods, the air supply location will have certain limitations.

[0004] Therefore, it is desirable in the art to provide a side-introduced air duct system for rail vehicles to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to propose a side-introduced air duct system for rail vehicles, which can solve the problem of matching the vehicle's upper air duct with the interior (beam frame), thereby enabling the air conditioning fresh air to be smoothly delivered to both sides of the vehicle's passenger compartment.

[0006] According to the present invention, a side-introduced air duct system for rail vehicles is provided, comprising an air duct body,

[0007] An air intake duct located at the top of the main air duct body, allowing fresh air to enter, and

[0008] Exhaust ducts are installed on both sides of the main air duct body to guide the fresh air into the guest room.

[0009] In one embodiment, a mounting base is provided on the side wall of the duct body, and the exhaust duct is configured in an L-shape and fixed to the duct body by the mounting base.

[0010] In one embodiment, at least two exhaust ducts are provided at intervals along the length of the main body of the air duct.

[0011] In one embodiment, a first beam is provided on both sides of the air duct body, and the exhaust channel is sleeved on the first beam.

[0012] In one embodiment, the side-introduced air duct system further includes a second beam fixed to the lower end face of the exhaust duct, and an exhaust port communicating with the outlet of the exhaust duct is provided in the second beam.

[0013] In one embodiment, a flange is provided on the lower end face of the exhaust duct, and the side-introduced air duct system further includes a first perforated plate that is sealed and installed in the exhaust duct through the flange.

[0014] In one embodiment, a first sealing strip is provided at the junction of the flange and the exhaust duct.

[0015] In one embodiment, a second perforated plate is laid on the air inlet channel, and the opening ratio of the first perforated plate is 60%; the opening ratio of the second perforated plate is 70% to 75%.

[0016] In one embodiment, thermal insulation cotton is provided on the inner wall of the upper plate of the air duct body; and sound-absorbing cotton is provided on the inner wall of the lower plate of the air duct body.

[0017] In one embodiment, the side-introduced air duct system further includes an air inlet enclosure fitted outside the air inlet channel, and a rear air outlet disposed at the end of the air duct body away from the air inlet channel, wherein a second sealing strip is provided at the joint between the air inlet enclosure and the upper plate.

[0018] In one embodiment, a third perforated plate for adjusting air volume is provided in the air duct body. The third perforated plate is constructed in the form of a trapezoid and includes a plurality of first through holes constructed in a square structure and a plurality of second through holes constructed in a circular structure disposed below the first through holes, wherein the size of the first through holes is larger than the size of the second through holes.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] Firstly, this invention designs two structures (i.e., cross-beam type and integrated type) to solve the problem of matching the vehicle's upper air duct with the interior (beam frame), so that the air conditioning fresh air can be smoothly delivered to both sides of the vehicle's passenger compartment, thereby ensuring that the exhaust duct is in the most advantageous position in the whole vehicle, thereby reducing the feeling of direct blowing and achieving the best experience for passengers.

[0021] Secondly, this invention ensures uniformity of fresh air flow both within the ductwork and when it is exhausted by incorporating perforated plates in the air intake and exhaust channels. Therefore, no additional baffles or static pressure plates are needed within the ductwork itself; the entire ductwork acts as a cavity for airflow transition. This effectively reduces the number of internal components, thereby decreasing the duct's resistance and improving the uniformity of airflow, ensuring consistent vehicle temperature and enhancing comfort.

[0022] Thirdly, by incorporating thermal insulation and sound-absorbing cotton, this device effectively absorbs noise generated by airflow and equipment operation within the duct, significantly reducing noise levels and providing a quieter environment. This helps reduce duct structure resonance caused by noise and vibration, improving the operational stability of the duct system. Attached Figure Description

[0023] The invention will now be described in detail with reference to the accompanying drawings, in which:

[0024] Figure 1 The schematic diagram illustrates the structure of a side-introduced air duct system for rail vehicles according to the present invention;

[0025] Figure 1a An internal view of the side-introduced air duct system for rail vehicles according to the present invention;

[0026] Figure 1b for Figure 1a Top view;

[0027] Figure 2 A partial view of a side-introduced air duct system for rail vehicles according to the present invention;

[0028] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0029] Figure 4 The illustration shows the airflow pattern of fresh air according to the present invention;

[0030] Figure 5 This is a first embodiment of the side-introduced air duct system for rail vehicles according to the present invention;

[0031] Figure 6 This is a second embodiment of the side-introduced air duct system for rail vehicles according to the present invention.

[0032] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0033] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0034] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components.

[0036] Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] Figure 1 The schematic diagram shows the structure of a side-introduced air duct system 100 for rail vehicles according to the present invention.

[0039] like Figure 1 As shown, the side-introduced air duct system 100 for rail vehicles according to the present invention mainly includes an air duct body 10, an air inlet channel 21, and an air outlet channel 22. Preferably, the air duct body 10 is constructed as a cavity structure; the air inlet channel 21 is located at the top of the air duct body 10 and connected to an external air conditioner, thereby enabling the smooth introduction of fresh air into the air duct body 10; the air outlet channel 22 is located on both sides of the air duct body 10 and can receive fresh air from the air duct body 10, while also smoothly transmitting fresh air to both sides of the vehicle passenger compartment to meet the favorable position of air outlet in the whole vehicle, thereby reducing the direct blowing sensation and achieving the effect of providing passengers with the best experience.

[0040] In one embodiment of the present invention, such as Figure 1 As shown, the exhaust duct 22 is constructed in an L-shape. Preferably, multiple spaced mounting seats 11 are provided on the side end of the duct body 10. Therefore, the exhaust duct 22 can be firmly connected to the mounting seats 11 by bolts, thereby ensuring the stability and robustness of the device during operation.

[0041] Preferably, a 90° corner is formed in the exhaust duct 22, which is designed as a chamfer or rounded corner, thereby effectively reducing the internal guiding ventilation resistance to facilitate the internal airflow direction.

[0042] In one embodiment, at least two spaced exhaust ducts 22 are provided along the length of the main body 10 of the air duct. In other words, multiple exhaust ducts 22 are provided on both sides of the main body 10 of the air duct, which makes it easier to reasonably distribute the exhaust ducts for each row of passenger seats, thereby reducing the feeling of direct airflow and achieving the best experience for passengers.

[0043] Currently, the ventilation duct structure of urban rail transit systems is difficult to meet the requirements of adjusting the position of air outlets to both sides inside the passenger compartment, and the ventilation duct has already reached its limit of supplying air to both sides. However, there are usually longitudinal beams on both sides of the ventilation duct, so the width of the ventilation duct is limited by the position of the longitudinal beams, and therefore the position of the air outlets is also limited, and the air outlets cannot meet the requirements of both sides of the passenger compartment.

[0044] To address the aforementioned problems, the present invention designs two structures, namely the first embodiment and the second embodiment described below.

[0045] Figure 5 This is a first embodiment of a side-introduced air duct system for rail vehicles according to the present invention. (See attached diagram.) Figure 5 The first embodiment of the present invention will now be introduced.

[0046] In this invention, a first beam 31 is provided on both sides of the main body 10 of the air duct. Since the exhaust channel 22 in this invention is constructed in an L-shape, a cross-beam method is used in this embodiment to complete the adjustment of the air outlet position. In other words, the exhaust channel 22 is respectively sleeved on the outside of the first beam 31, so while protecting the first beam 31, it can also achieve the effect of air supply from both sides.

[0047] Figure 2 This is a partial view of a side-introduced air duct system 100 for rail vehicles according to the present invention. Figure 3 for Figure 2 A magnified view of a portion of the image. Figure 4 The illustration shows the airflow pattern of fresh air according to the present invention.

[0048] Preferably, such as Figure 3 As shown, a flange 12 is provided on the lower end face of the exhaust duct 22, and the side-introduced air duct system 100 for rail vehicles also includes a first perforated plate 221. Preferably, the first perforated plate 221 is sealed and installed in the exhaust duct 22 via the flange 12, thereby ensuring that fresh air can only be exhausted to the outside through the first perforated plate 221.

[0049] In this invention, multiple holes are distributed along the horizontal and vertical directions on the first perforated plate 221. Therefore, this method can ensure that the fresh airflow can be evenly discharged after being resisted by the first perforated plate 221, thereby reducing the feeling of direct blowing and achieving the best experience for passengers.

[0050] In one embodiment, such as Figure 2 As shown, a first sealing strip 222 is provided at the joint between the flange 12 and the exhaust duct 22. Preferably, the first sealing strip 222 can effectively seal the gap between the flange 12 and the exhaust duct 22, thereby effectively sealing the first orifice plate 221 and the exhaust duct 22, so as to ensure that fresh air can only be discharged outward through the first orifice plate 221.

[0051] Preferably, such as Figure 2 As shown, a second perforated plate 211 is laid on the air inlet channel 21. Preferably, the second perforated plate 211 is installed in a sealed manner inside the air inlet channel 21, so as to effectively disperse the fresh air output by the air conditioner. In other words, after being resisted by the second perforated plate 211, the fresh air flow can be evenly dispersed into the interior of the air duct body 10, which helps to form air outlets on both sides in the subsequent process.

[0052] In this invention, to control the stability of fresh air delivered into the duct, the opening ratio of the second perforated plate 211 is set between 70% and 75%, and the total air volume of the fresh air supplied to the air conditioner is 1300 m³ / s. 3 The total area of ​​the air inlet is 0.1㎡, and the average wind speed is 3.6m / s. After stability adjustment by the second perforated plate 211, the average wind speed is about 5m / s, and the optimal wind speed is controlled at 5m / s. The first perforated plate 221 is set to adjust the uniformity of the air outlet of the air duct. The air outlet wind speed is controlled between 1.2m / s and 1.5m / s, the opening ratio is 60%, and the Ф8 diameter round holes are evenly arranged.

[0053] It is easy to understand that this invention can control the wind speed and total air volume by controlling the opening ratio of the perforated plate, and in this way, it is easier to make the air volume of the entire carriage meet the ideal usage requirements. It is worth noting that the opening ratio of the perforated plate usually needs to be determined by on-site testing.

[0054] In one embodiment, such as Figure 2 As shown, the side-inlet ventilation system 100 for rail vehicles also includes an air inlet enclosure 13 fitted over the air inlet channel 21. Preferably, the air inlet enclosure 13 is embedded in the air inlet channel 21 to prevent misalignment of the air inlet due to misalignment during installation.

[0055] In addition, such as Figure 2As shown, a second sealing strip 212 is provided at the joint between the air inlet enclosure 13 and the upper plate 101 of the duct body 10. Therefore, this method can effectively prevent leakage of fresh air injected by the air conditioner, ensuring that fresh air can fully and completely enter the duct body 10, thereby improving the exhaust efficiency and exhaust quality of the device.

[0056] The airflow process in this invention is as follows: Figure 4 As shown, the fresh air from the air conditioner enters through the air inlet channel 21 and is evenly distributed into the air duct body 10 after being resisted by the second perforated plate 211; the fresh air is discharged to both sides of the passenger compartment through the exhaust channel 22 and can be evenly discharged outward after being resisted by the first perforated plate 221, thereby reducing the feeling of direct blowing and enabling passengers to achieve the best experience.

[0057] In one embodiment of the present invention, such as Figure 2 As shown, thermal insulation cotton is installed on the inner wall of the upper plate 101 of the main body of the air duct 10. Therefore, during ventilation, the heat exchange between the air inside the air duct and the external environment can be effectively reduced, thereby maintaining a stable air temperature, reducing energy loss, and improving the efficiency of the ventilation system. In addition, this method can also prevent condensation from forming on the surface of the air duct due to the temperature difference between the inside and outside, thus avoiding water droplet accumulation that could damage the air duct structure and vehicle equipment. At the same time, it can also reduce noise by absorbing and blocking the noise generated by airflow inside the air duct, thereby further improving the acoustic environment inside the vehicle.

[0058] Preferably, the insulation cotton in this invention also helps to fill the joints and gaps of the air duct, thereby improving the airtightness of the air duct and preventing air leakage. This not only reduces the erosion of the air duct by external factors such as dust and moisture, but also extends the service life of the air duct itself.

[0059] Figure 1a This is an internal view of a side-introduced air duct system 100 for rail vehicles according to the present invention. Figure 1b for Figure 1a Top view.

[0060] In one embodiment, such as Figures 1a-1b As shown, a third perforated plate 40 is provided inside the air duct body 10. Preferably, the third perforated plate 40 is constructed in a trapezoidal form, and the third perforated plate 40 includes a plurality of first through holes 41 constructed in a square structure, and a plurality of second through holes 42 constructed in a circular structure disposed below the first through holes 41, wherein the size of the first through holes 41 is larger than the size of the second through holes 42.

[0061] In this invention, the third perforated plate 40 is a guide plate for adjusting the air volume at the front and rear ends of the air outlet. It adopts a design with square holes at the top and round holes at the bottom, which is conducive to guiding the internal airflow organization and can also reduce the internal resistance caused by the perforated plate.

[0062] Preferably, the opening ratio of the third perforated plate 40 is determined by a ventilation test. Let the front air outlets be α1 and α2, and the rear air outlets be α3, α4, and α5. The airflow data for each air outlet is tested by adjusting the opening ratio of the perforated plate 3 as follows:

[0063]

[0064] Based on the test data above, it can be concluded that the optimal state for the opening rate of the third perforated plate 40 is 60%, resulting in a more uniform airflow at each air outlet.

[0065] In one embodiment of the present invention, such as Figure 2 As shown, sound-absorbing cotton is provided on the inner wall of the lower plate 102 of the main body of the air duct 10. Preferably, the sound-absorbing cotton can absorb the noise generated by the airflow in the air duct and the vibration noise during equipment operation, thereby providing passengers with a quieter riding environment and enhancing riding comfort. In addition, this method can also adjust the acoustic characteristics inside the air duct, thereby reducing sound reflection and resonance, making sound propagation more uniform and further improving the overall acoustic quality.

[0066] In one embodiment, such as Figure 1 As shown, a downward-facing rear air outlet 14 is provided at the end of the air duct body 10 away from the air inlet channel 21. Preferably, the rear air outlet 14 can be used in conjunction with the side air outlet (i.e., the exhaust channel 22) to smoothly deliver fresh air from the air duct body 10 to different areas. Preferably, a sealing strip is also provided at a corresponding position on the rear air outlet 14.

[0067] Figure 6 This is a second embodiment of the side-introduced air duct system for rail vehicles according to the present invention. (See attached diagram.) Figure 6 The second embodiment of the present invention will now be introduced. Preferably, only the parts that differ from the first embodiment will be described in this embodiment, while the parts that are the same will not be repeated.

[0068] In this invention, a second beam 32 is provided below the main body 10 of the air duct. Preferably, the second beam 32 is fixed to the lower end face of the exhaust duct 22; in other words, in this embodiment, the second beam 32 and the exhaust duct 22 are constructed as an integrated structure. Therefore, this method not only reduces the space occupied by the side-introduced air duct system 100 used in rail vehicles, but also makes it easier to reasonably adjust the position of the exhaust duct 22, thereby achieving the effect of air supply from both sides.

[0069] In one embodiment, an exhaust vent 321 is also provided on the second beam 32. Preferably, the exhaust vent 321 extends through the entire second beam 32 and is aligned with the exhaust duct 22, thereby ensuring that the fresh air discharged from the exhaust duct 22 can flow smoothly to both sides of the passenger compartment under the guidance of the exhaust vent 321, so as to further reduce the feeling of direct airflow and achieve the best experience for passengers.

[0070] Compared with existing technologies, the advantages of this invention are:

[0071] Firstly, this invention designs two structures (i.e., cross-beam type and integrated type) to solve the problem of matching the vehicle's upper air duct with the interior (beam frame), so that the air conditioning fresh air can be smoothly delivered to both sides of the vehicle's passenger compartment, thereby ensuring that the exhaust duct 22 is in the most advantageous position in the whole vehicle, thereby reducing the feeling of direct blowing and achieving the effect of providing passengers with the best experience.

[0072] Secondly, by incorporating perforated plates in the air intake channel 21 and exhaust channel 22, this invention ensures a certain degree of uniformity in the fresh air supply within the duct body 10 and as it is exhausted outwards. Therefore, no additional baffles or static pressure plates are needed within the duct body 10; the entire duct body 10 simply serves as a cavity for airflow transition. This approach effectively reduces the number of internal components, thereby decreasing the duct's resistance and facilitating the regulation of airflow uniformity, ensuring overall vehicle temperature uniformity, and improving comfort.

[0073] Thirdly, by incorporating thermal insulation and sound-absorbing cotton, this device effectively absorbs noise generated by airflow and equipment operation within the duct, significantly reducing noise levels and providing a quieter environment. This helps reduce duct structure resonance caused by noise and vibration, improving the operational stability of the duct system.

[0074] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of the present invention, and such changes or modifications should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A side-introduced air duct system for rail vehicles, comprising: Main body of the air duct (10). An air intake channel (21) is set at the top of the main body of the air duct (10) and allows fresh air to enter, and Exhaust ducts (22) are provided on both sides of the main air duct (10) and used to guide the fresh air into the guest room. A flange (12) is provided on the lower end face of the exhaust duct (22). The side-introduced air duct system also includes a first perforated plate (221) which is sealed and installed in the exhaust duct (22) through the flange (12). A second perforated plate (211) is laid on the air inlet duct (21). The opening ratio of the first perforated plate (221) is 60% and the opening ratio of the second perforated plate (211) is 70%~75%. The fresh air entering through the air inlet channel (21) is evenly dispersed into the air duct body (10) after being resisted by the second perforated plate (211). Then, when it passes through the exhaust channel (22), it is evenly discharged outward after being resisted by the first perforated plate (221) to reduce the feeling of direct blowing. A mounting seat (11) is provided on the side wall of the air duct body (10). The exhaust channel (22) is constructed in an L-shape and is fixed to the air duct body (10) by the mounting seat (11). A first beam (31) is provided on both sides of the main body of the air duct (10), and the exhaust channel (22) is sleeved on the outside of the first beam (31). Alternatively, the side-introduced air duct system may also include a second beam (32) fixed to the lower end face of the exhaust channel (22), and an exhaust port (321) communicating with the outlet of the exhaust channel (22) is provided in the second beam (32).

2. The side-introduced air duct system for rail vehicles according to claim 1, characterized in that, At least two spaced exhaust channels (22) are provided along the length of the main body of the air duct (10).

3. The side-introduced air duct system for rail vehicles according to claim 2, characterized in that, A first sealing strip (222) is provided at the junction of the flange (12) and the exhaust channel (22).

4. The side-introduced air duct system for rail vehicles according to claim 3, characterized in that, Insulating cotton is provided on the inner wall of the upper plate (101) of the air duct body (10); sound-absorbing cotton is provided on the inner wall of the lower plate (102) of the air duct body (10).

5. The side-introduced air duct system for rail vehicles according to claim 4, characterized in that, The side-introduced air duct system also includes an air inlet enclosure (13) fitted outside the air inlet channel (21) and a rear air outlet (14) located at one end of the air duct body (10) away from the air inlet channel (21), wherein a second sealing strip (212) is provided at the joint between the air inlet enclosure (13) and the upper plate (101).

6. The side-introduced air duct system for rail vehicles according to claim 5, characterized in that, The air duct body (10) is provided with a third perforated plate (40) for adjusting the air volume. The third perforated plate (40) is constructed in the form of a trapezoid and includes a plurality of first through holes (41) constructed in a square structure, and a plurality of second through holes (42) constructed in a circular structure located below the first through holes (41). The size of the first through holes (41) is larger than the size of the second through holes (42).

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