Side introduction type air duct system for railway vehicle

Abstract

The invention provides a side leading-in type air duct system for a railway vehicle. The side leading-in type air duct system comprises an air duct body, an air inlet channel and air exhaust channels, wherein the air inlet channel is arranged at the top end of the air duct body and allows fresh air to enter, and the air exhaust channels are arranged on the two sides of the air duct body and used for guiding the fresh air into a passenger room.

Description

Technical Field

[0001] The invention relates to the technical field of rail subway vehicle ventilation systems, and in particular to a side-introduction type air duct system for rail vehicles. Background Art

[0002] As an important part of modern urban transportation, the comfort and air quality of the internal environment of urban rail subways are of vital importance. The air duct system plays a key role in this, which is responsible for regulating the air flow, temperature and humidity in the car to provide passengers with a good riding experience.

[0003] With the continuous development of urban rail and subway technology, the requirements for air duct systems are also increasing. The early air duct design was relatively simple, focusing mainly on basic ventilation functions. However, with the increase in train speed, passenger flow, and passengers' requirements for comfort, air duct technology faces many challenges. At present, the air duct structure of urban rail and subway basically exhausts air from the bottom of the duct. However, when the internal top plate is combined with the air supply method, the air supply position will have certain limitations.

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

[0005] The purpose of the present invention is to provide a side-introduction air duct system for rail vehicles, which can solve the coordination problem between the air duct and the interior decoration (beam frame) on the vehicle, so that conditioned fresh air can be smoothly delivered to both sides of the vehicle passenger compartment.

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

[0007] An air inlet channel is provided at the top of the air duct body and allows fresh air to enter, and

[0008] An exhaust passage is arranged on both sides of the air duct main body and is used to guide the fresh air to the passenger compartment.

[0009] In one embodiment, a mounting seat is provided on the side wall of the air duct body, and the exhaust passage is configured as an L-shaped structure and is fixed to the air duct body via the mounting seat.

[0010] In one embodiment, at least two exhaust passages are arranged at intervals along the length direction of the air duct body.

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

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

[0013] In one embodiment, a flange is provided on the lower end surface of the exhaust passage, and the side-introduction air duct system further comprises a first orifice plate sealingly installed in the exhaust passage through the flange.

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

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

[0016] In one embodiment, heat-insulating 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-introduction air duct system also includes an air inlet enclosure mounted outside the air inlet channel, and a rear end air outlet arranged at one 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 orifice plate for adjusting the air volume is provided in the air duct main body, the third orifice plate is constructed in a step form 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 and arranged 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:

[0020] First, the present invention designs two structures (i.e., cross-beam type and integrated type) to solve the coordination problem between the air duct and the interior (beam frame) on the vehicle, so that the fresh air of air conditioning can be smoothly delivered to both sides of the vehicle passenger compartment, thereby ensuring that the exhaust duct can be in the most advantageous position in the whole vehicle, thereby achieving the effect of reducing the direct blowing feeling so that passengers can achieve the best experience.

[0021] Secondly, the present invention sets orifice plates in the air inlet channel and the air exhaust channel to ensure that the fresh air can have a certain uniformity in the air duct body or when it is discharged to the outside. Therefore, there is no need to add partitions and static pressure plates in the air duct body, and the entire air duct body can be used as a cavity with air supply transition function. In this way, the entire structure can effectively reduce the internal components of the air duct, thereby reducing the resistance of the air duct itself, which is more conducive to adjusting the uniformity of air supply, ensuring the temperature uniformity of the whole vehicle, and improving comfort.

[0022] Thirdly, this device is equipped with heat-insulating cotton and sound-absorbing cotton, which can effectively absorb the noise generated by air flow and equipment operation in the duct, greatly reduce the noise level, and provide a quieter environment. It helps to reduce the resonance of the duct structure caused by noise and vibration, and improve the operating stability of the duct system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings, in which:

[0024] Figure 1 The structure of the side-introduction type air duct system for a rail vehicle according to the present invention is schematically shown;

[0025] Figure 1a is an internal view of a side-introduction air duct system for a rail vehicle according to the present invention;

[0026] Figure 1b for Figure 1a A top view of

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

[0028] Figure 3 for Figure 2 A partial enlarged view of the

[0029] Figure 4 The flow of fresh air according to the present invention is schematically shown;

[0030] Figure 5 A first embodiment of a side-introduction type air duct system for a rail vehicle according to the present invention;

[0031] Figure 6 The present invention is a second embodiment of a side-introduction type air duct system for a rail vehicle according to the present invention.

[0032] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0033] In order to make the technical solutions and advantages of the present invention more clearly understood, the exemplary embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than an exhaustive list of all the embodiments. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

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

[0035] In the present invention, unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements.

[0036] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] Figure 1 The structure of a side-introduction type air duct system 100 for a rail vehicle according to the present invention is schematically shown.

[0039] like Figure 1 As shown, the side-introduction 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 exhaust channel 22. Preferably, the air duct body 10 is configured as a cavity structure; the air inlet channel 21 is arranged at the top of the air duct body 10 and is connected to the external air conditioner, so that fresh air can be smoothly introduced into the air duct body 10; the air exhaust channel 22 is arranged on both sides of the air duct body 10 and can receive fresh air from the air duct body 10, and can smoothly transmit 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 feeling so that passengers can achieve the best experience.

[0040] In one embodiment of the present invention, Figure 1 As shown, the exhaust passage 22 is constructed into an L-shaped structure. Preferably, a plurality of spaced mounting seats 11 are provided on the side ends of the air duct body 10, so that the exhaust passage 22 can form a firm connection with the mounting seats 11 by bolts, thereby ensuring the stability and firmness of the device during operation.

[0041] Preferably, a 90° corner is formed in the exhaust passage 22, and the corner is designed to be chamfered or rounded, so as to effectively reduce the internal ventilation resistance and facilitate the internal airflow guidance.

[0042] In one embodiment, at least two exhaust passages 22 are arranged at intervals along the length direction of the air duct body 10. In other words, multiple exhaust passages 22 are respectively arranged on both sides of the air duct body 10, so that it is easier to reasonably distribute the seats for each row of passengers, thereby reducing the direct blowing feeling so that passengers can achieve the best experience.

[0043] At present, the air duct structure of urban rail subway is difficult to meet the requirement of adjusting the air outlet position to both sides inside the passenger compartment, and the air duct has reached the limit of air supply on both sides. However, there are usually longitudinal beams on both sides of the air duct, so the width of the air duct is limited by the position of the longitudinal beam, so the position of the air outlet is also limited, and the air outlet cannot meet the requirements on both sides of the passenger compartment.

[0044] The present invention designs two structures to solve the above problems, namely the first embodiment and the second embodiment described below.

[0045] Figure 5 The first embodiment of the side-introduced air duct system for rail vehicles according to the present invention. Figure 5 A first embodiment of the present invention will be described.

[0046] In the present invention, a first beam 31 is provided on both sides of the air duct body 10. Since the exhaust passage 22 in the present invention is constructed as an L-shaped structure, a cross-beam method is adopted in this embodiment to complete the adjustment of the air outlet position. In other words, the exhaust passage 22 is respectively sleeved on the outside of the first beam 31, so that the first beam 31 is protected while also achieving the effect of air supply on both sides.

[0047] Figure 2 FIG. 1 is a partial view of a side-introduction type air duct system 100 for a rail vehicle according to the present invention. Figure 3 for Figure 2 A partial enlarged view of the . Figure 4 The flow of fresh air according to the present invention is schematically shown.

[0048] Preferably, if Figure 3 As shown, a flange 12 is provided on the lower end surface of the exhaust passage 22, and the side-introduction air duct system 100 for rail vehicles further includes a first orifice plate 221. Preferably, the first orifice plate 221 is sealedly mounted on the exhaust passage 22 through the flange 12, thereby ensuring that fresh air can only be discharged outward through the first orifice plate 221.

[0049] In the present invention, a plurality of holes are distributed horizontally and vertically on the first hole plate 221. Therefore, in this way, it is ensured that the fresh air flow can be discharged evenly after encountering the resistance of the first hole plate 221, thereby reducing the direct blowing feeling so that passengers can achieve the best experience.

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

[0051] Preferably, if Figure 2 As shown, a second orifice plate 211 is provided on the air inlet channel 21. Preferably, the second orifice plate 211 is sealedly installed in the air inlet channel 21, so as to effectively disperse the fresh air output by the air conditioner. In other words, the fresh air flow can enter the interior of the air duct body 10 in a uniform and dispersed manner after being subjected to the resistance of the second orifice plate 211, so as to help form air outlets on both sides later.

[0052] In the present invention, in order to control the stability of the fresh air delivered to the air duct, the opening rate of the second orifice plate 211 is set between 70% and 75%, and the total air volume of the fresh air delivered to the air duct is 1300m 3 / h, the total area of ​​the air inlet is 0.1㎡, the average wind speed is 3.6m / s, and after the stability adjustment of the second orifice plate 211, the average wind speed is about 5m / s, and the wind speed is controlled at 5m / s for the best state. The first orifice plate 221 is set to adjust the uniformity of the air outlet of the air duct, and the air outlet wind speed is controlled at 1.2m / s~1.5m / s, the opening rate is 60%, and the aperture diameter Ф8 circular holes are evenly arranged.

[0053] It is easy to understand that the present invention can achieve the effect of controlling the wind speed and total air volume by controlling the opening rate of the orifice plate, and in this way, it is easier to make the air volume of the entire carriage reach the ideal state of use requirements. It is worth noting that the opening rate of the orifice plate usually needs to be determined by field tests.

[0054] In one embodiment, Figure 2 As shown, the side introduction air duct system 100 for rail vehicles also includes an air inlet enclosure 13 sleeved outside the air inlet channel 21. Preferably, the air inlet enclosure 13 is connected to the air inlet channel 21 in an embedded manner, thereby preventing the air inlet from being misaligned due to misaligned installation.

[0055] In addition, if 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 air duct body 10. Therefore, in this way, leakage of fresh air injected by the air conditioner can be effectively prevented, and the fresh air can be fully and completely entered into the air duct body 10, so as to improve the exhaust efficiency and exhaust quality of the device.

[0056] The flow process of fresh air in the present invention is as follows Figure 4 As shown, fresh air from the air conditioner enters through the air inlet channel 21, and is evenly dispersed into the air duct body 10 after encountering the resistance of the second orifice 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 encountering the resistance of the first orifice plate 221, thereby achieving the effect of reducing the direct blowing feeling so that passengers can achieve the best experience.

[0057] In one embodiment of the present invention, Figure 2 As shown, thermal insulation cotton is provided on the inner wall of the upper plate 101 of the air duct body 10. Therefore, during the ventilation process, the heat exchange between the air in the air duct and the external environment can be effectively reduced, thereby maintaining the air temperature stable to reduce energy loss and improve the efficiency of the ventilation system. In addition, this method can also prevent condensation water from being generated on the surface of the air duct due to the temperature difference between the inside and outside, thereby avoiding the accumulation of water droplets to cause damage to the air duct structure and vehicle equipment, and at the same time, it can also reduce noise to absorb and block the noise generated by the air flow in the air duct to further improve the acoustic environment in the car.

[0058] Preferably, the thermal insulation cotton in the present invention is also helpful to fill the joints and gaps of the air duct, thereby improving the sealing of the air duct and preventing air leakage, which can not only reduce the erosion of the air duct by external factors such as dust, water vapor, etc., but also extend the service life of the air duct itself.

[0059] Figure 1a FIG. 1 is an internal view of a side-introduction type air duct system 100 for a rail vehicle according to the present invention. Figure 1b for Figure 1a Top view of the .

[0060] In one embodiment, Figure 1a-1b As shown, a third orifice plate 40 is provided in the air duct body 10. Preferably, the third orifice plate 40 is configured in a step form, and the third orifice plate 40 includes a plurality of first through holes 41 configured in a square structure, and a plurality of second through holes 42 configured in a circular structure and arranged below the first through holes 41, wherein the size of the first through holes 41 is larger than that of the second through holes 42.

[0061] In the present invention, the third orifice 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 of square holes on the top and round holes on the bottom, which is beneficial to the guidance of the internal airflow organization and can also reduce the internal resistance caused by the orifice plate.

[0062] Preferably, the opening rate of the third orifice plate 40 is determined by a ventilation test. Assuming that the front air outlets are α1 and α2, and the rear air outlets are α3, α4, and α5, the air volume data of each air outlet is tested by adjusting the opening rate of the orifice plate 3 as follows:

[0063]

[0064] It can be concluded from the above test data that the opening rate of the third orifice plate 40 is in the best state when it is 60%, and the air volume of each air outlet is relatively uniform.

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

[0066] In one embodiment, Figure 1 As shown, a rear air outlet 14 arranged downward is provided at one 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), so that the fresh air in the air duct body 10 can be smoothly delivered to various different areas. Preferably, a sealing strip is also provided at a corresponding position on the rear air outlet 14.

[0067] Figure 6 The second embodiment of the side-introduced air duct system for rail vehicles according to the present invention. Figure 6 Preferably, in this embodiment, only the parts different from the first embodiment are introduced, and the same parts are not repeated.

[0068] In the present invention, a second beam 32 is provided below the air duct body 10. Preferably, the second beam 32 is fixed to the lower end surface of the exhaust passage 22. In other words, in this embodiment, the second beam 32 and the exhaust passage 22 are constructed as an integrated structure. Therefore, in this way, not only can the space occupied by the side-introduction air duct system 100 for rail vehicles be reduced, but also the position of the exhaust passage 22 can be more easily and reasonably adjusted, so as to achieve the effect of air supply on both sides.

[0069] In one embodiment, an exhaust port 321 is further provided on the second beam body 32. Preferably, the exhaust port 321 runs through the entire second beam body 32, and the exhaust port 321 is aligned with the exhaust passage 22, so that under the guidance of the exhaust port 321, it is ensured that the fresh air exhausted from the exhaust passage 22 can smoothly flow to both sides of the passenger compartment, so as to further reduce the direct blowing feeling so as to provide the best experience for the passengers.

[0070] Compared with the prior art, the advantages of the present invention are:

[0071] First, the present invention designs two structures (i.e., cross-beam type and integrated type) to solve the coordination problem between the air duct and the interior (beam frame) on the vehicle, so that the fresh air of air conditioning can be smoothly delivered to both sides of the vehicle passenger compartment, thereby ensuring that the exhaust duct 22 can be in the most advantageous position in the whole vehicle, thereby achieving the effect of reducing the direct blowing feeling so that passengers can achieve the best experience.

[0072] Secondly, the present invention provides orifice plates in the air inlet channel 21 and the air outlet channel 22, thereby ensuring that the fresh air can have a certain uniformity in the air duct body 10 or when it is discharged to the outside. Therefore, there is no need to add partitions and static pressure plates in the air duct body 10, and the entire air duct body 10 can be used as a cavity with a transition function for air supply. In this way, the entire structure can effectively reduce the internal components of the air duct, thereby reducing the resistance of the air duct itself, which is more conducive to adjusting the uniformity of air supply, ensuring the temperature uniformity of the entire vehicle, and improving comfort.

[0073] Thirdly, this device is equipped with heat-insulating cotton and sound-absorbing cotton, which can effectively absorb the noise generated by air flow and equipment operation in the duct, greatly reduce the noise level, and provide a quieter environment. It helps to reduce the resonance of the duct structure caused by noise and vibration, and improve the operating stability of the duct system.

[0074] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the disclosure scope of the present invention, and such changes or modifications should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A side-introduction air duct system for a rail vehicle, comprising: Air duct body (10), an air inlet channel (21) disposed at the top of the air duct body (10) and allowing fresh air to enter, and An exhaust passage (22) is arranged on both sides of the air duct main body (10) and is used to guide the fresh air to the passenger compartment.

2. The side-introduction air duct system for rail vehicles according to claim 1, characterized in that: A mounting seat (11) is provided on the side wall of the air duct main body (10); the exhaust passage (22) is configured as an L-shaped structure and is fixed to the air duct main body (10) via the mounting seat (11).

3. The side-introduction air duct system for rail vehicles according to claim 2, characterized in that: At least two exhaust passages (22) are arranged at intervals along the length direction of the air duct main body (10).

4. The side-introduction air duct system for rail vehicles according to claim 3, characterized in that: First beam bodies (31) are provided on both sides of the air duct main body (10), and the exhaust channel (22) is sleeved outside the first beam bodies (31).

5. The side-introduction air duct system for rail vehicles according to claim 3, characterized in that: The side-introduction air duct system further comprises a second beam body (32) fixed to the lower end surface of the exhaust channel (22), and an exhaust port (321) communicating with the outlet of the exhaust channel (22) is arranged in the second beam body (32).

6. The side-introduction air duct system for rail vehicles according to claim 4 or 5, characterized in that: A flange (12) is provided on the lower end surface of the exhaust passage (22), and the side-introduction air duct system also includes a first orifice plate (221) sealedly installed in the exhaust passage (22) through the flange (22), and a first sealing strip (222) is provided at the junction of the flange (12) and the exhaust passage (22).

7. The side-introduction air duct system for rail vehicles according to claim 6, characterized in that: A second orifice plate (211) is laid on the air inlet channel (21), and the opening rate of the first orifice plate (221) is 60%; the opening rate of the second orifice plate (211) is 70% to 75%.

8. The side-introduction air duct system for rail vehicles according to claim 7, characterized in that: Heat-insulating cotton is provided on the inner wall of the upper plate (101) of the air duct main body (10); and sound-absorbing cotton is provided on the inner wall of the lower plate (102) of the air duct main body (10).

9. The side-introduction air duct system for rail vehicles according to claim 8, characterized in that: The side-introduction air duct system also includes an air inlet enclosure (13) mounted outside the air inlet channel (21), and a rear end air outlet (14) arranged 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 junction of the air inlet enclosure (13) and the upper plate (101).

10. The side-introduction air duct system for rail vehicles according to claim 9, characterized in that: A third orifice plate (40) for adjusting the air volume is provided in the air duct body (10); the third orifice plate (40) is constructed in a step form and comprises 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 and arranged 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).

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