An air duct for urban rail vehicles

Abstract

The present invention discloses an air duct for urban rail vehicles, comprising an air duct structure 1 and an air duct structure 2, wherein the air duct structure 1 and the air duct structure 2 are aligned and connected; a plurality of partitions are provided through the air duct structure 1 and the air duct structure 2, and the plurality of partitions define a corridor air duct and a side air duct in the air duct structure 1 and the air duct structure 2. Beneficial effect: the air volume regulating mechanism controls the suction force of the electromagnet on the armature to realize the relative movement of the movable block to the baffle to adjust the cross-sectional area of ​​the through hole for air flow, and then adjusts the air volume in the corridor air duct and the side air duct. During the adjustment process, the movable block does not contact the baffle, and during the operation of the air volume regulating mechanism, the various components do not have any contact, collision, or transmission structure. Therefore, the air volume regulating mechanism can adjust the air volume without noise, and the air volume regulating mechanism does not require lubrication and maintenance, effectively solving the problem of the current air volume regulating mechanism generating noise that affects passengers during operation.

Description

Technical Field

[0001] The present invention relates to the field of urban rail vehicles, and in particular to an air duct used in urban rail vehicles. Background Art

[0002] The air duct is a structure on urban rail vehicles used to transport air for air conditioning. Whether it is a subway, a high-speed train, or a conventional train, there is an air duct in the car. The cold or hot air generated by the air conditioner is transported to various parts of the car through the air duct, thereby ensuring that the temperature in various parts of the car is suitable.

[0003] Common air duct structures are shown in patents with publication numbers CN118144830B, CN117565910A, and CN118695541A. The air ducts extending along the length of the car from the top of the car are divided into corridor air ducts and side air ducts. The corridor air ducts are connected to the air outlets on the top of the inner side of the car and blow air directly into the corridor of the car. The side air ducts are connected to the air outlets under the seats through the air ducts in the side walls of the car.

[0004] In order to ensure that the temperature inside the carriage is appropriate, especially the temperature difference between the air at the bottom of the carriage and near the passengers' heads is within an appropriate range, the existing train air duct structure is equipped with an air volume adjustment mechanism to adjust the air volume in the corridor air duct and side air duct to achieve balanced air temperature at the bottom of the carriage and near the passengers' heads, avoiding causing discomfort to passengers.

[0005] The air volume distribution and adjustment device disclosed in the patent with publication number CN118144830B is an air volume adjustment mechanism widely used on trains. This air volume adjustment mechanism has a simple structure, low cost, reliable action, easy operation, fast air volume adjustment and long service life. However, its disadvantages are also obvious. After long-term use, it will produce working noise, and the noise is transmitted downward into the car, affecting the passenger experience. The reason for the working noise is poor contact lubrication of the transmission components, including poor lubrication of the output shaft of the servo motor 16, poor lubrication of the gear 17, the turntable 1, and the teeth 18. This poor contact lubrication causes the output shaft, gear, and turntable to emit a harsh and sharp noise when rotating. The output shaft, gear, turntable, and teeth cannot be greased, otherwise the hot air flow in the air duct in the heating state will heat the lubricating grease to produce odor and pollute the air in the air duct. The output shaft, gear, turntable, and teeth are in an environment where they are blown by hot and cold air flows for a long time, which aggravates the poor contact lubrication of the transmission components.

[0006] In order to prevent noise from affecting passengers' riding experience, the current routine operation is for train staff to control the action of the air volume adjustment mechanism in advance to adjust the air volume distribution in advance. For example, when the train arrives at the station, the air volume adjustment mechanism is controlled while passengers are getting on and off the train and the interior environment is noisy. At this time, even if noise is generated, it will not attract the attention of passengers. Obviously, this is only a stopgap measure to deal with the impact of noise at the moment. Technical personnel in this field still urgently need to develop a new air volume adjustment mechanism to solve the problem of noise affecting passengers. Summary of the Invention

[0007] The main purpose of the present invention is to provide an air duct for urban rail vehicles, aiming to solve the problem that the air volume adjustment mechanism in the existing air duct generates noise when working, affecting the passenger riding experience.

[0008] To solve the above problems, the present invention proposes an air duct for urban rail vehicles, comprising an air duct structure 1 and an air duct structure 2, wherein the air duct structure 1 and the air duct structure 2 are aligned and connected;

[0009] A plurality of partitions are provided through the air duct structure 1 and the air duct structure 2, and the plurality of partitions define corridor air ducts and side air ducts in the air duct structure 1 and the air duct structure 2. The corridor air duct and the side air duct of the air duct structure 1 are both provided with air volume adjustment mechanisms for adjusting the air volume in the corridor air duct and the side air duct;

[0010] The air volume regulating mechanism comprises:

[0011] A baffle extends across the corridor air duct or the side air duct, wherein the baffle is provided with a through hole, and the corridor air duct or the side air duct on both sides of the baffle are connected through the through hole;

[0012] A movable block is provided to move through the through hole without contacting the hole wall of the through hole, the inner wall of the corridor air duct and the side air duct. The movable block moves along the airflow direction to change the free cross-sectional area of ​​the through hole, and the free cross-sectional area is the difference between the cross-sectional area of ​​the through hole and the cross-sectional area of ​​the movable block located in the through hole;

[0013] An armature is provided at one end of the leeward side of the movable block, the one end of the movable block being connected to a plurality of elastic wire bodies 2, which are connected to the air duct structure 1. The movable block is positioned in the corridor air duct or the side air duct by the plurality of elastic wire bodies 2, and when no airflow blows toward the movable block, the movable block passes through the through hole and remains stationary;

[0014] An electromagnet is located at one end of the leeward side of the movable block and is spaced apart from the armature. The electromagnet is fixedly connected to the air duct structure through a mounting strip. When the electromagnet is energized, it attracts the armature and drives the movable block to move closer to the electromagnet along the airflow direction.

[0015] An elastic wire body 1, one end of which is connected to an end of the windward side of the movable block, and the other end of which is connected to an air duct structure 1, and the elastic wire body 1 pulls the movable block to move away from the electromagnet along the direction of the airflow.

[0016] In one embodiment, there are a plurality of the second air duct structures, the plurality of second air duct structures are arranged in a straight line and are interconnected, and the first air duct structure is located at one end of a row of the second air duct structures;

[0017] The air duct structure 2 includes an integral top plate 2 and an integral bottom plate 2 which are detachably sealed and fixedly connected to each other. The integral top plate 2 includes a large top plate 2 and a small top plate 2 arranged on both sides of the large top plate 2. The integral bottom plate 2 includes a large bottom plate 2 and a side plate 2 arranged on both sides of the large bottom plate 2. The side plate 2 and the small top plate 2 directly above it are detachably sealed and fixedly connected. A plurality of side duct outlets are arranged on the side plate 2 at intervals along the airflow direction, and a corridor duct outlet is provided on the large bottom plate 2.

[0018] In one embodiment, the air duct structure includes an integral top plate and an integral bottom plate that are detachably sealed and fixedly connected to each other. The integral top plate includes a large top plate and a small top plate provided on both sides of the large top plate. The integral bottom plate includes a large bottom plate and a side plate provided on both sides of the large bottom plate. The side plate and the small top plate directly above the side plate are detachably sealed and fixedly connected to each other. A normally closed door is provided on the large bottom plate.

[0019] In one embodiment, the partitions include partition 1, partition 2, partition 3, and partition 4;

[0020] There is a pair of partition plates 2, which are symmetrically arranged on both sides of partition plate 1 and spaced apart in parallel with partition plate 1. The upper and lower ends of partition plates 1 and 2 are respectively sealed and fixedly connected to large top plate 1 and large bottom plate 1. The pair of partition plates 2 define a corridor air duct and two side air ducts in the air duct structure 1. The corridor air duct of the air duct structure 1 is located between the pair of partition plates 2, and the two side air ducts of the air duct structure 1 are located on both sides of the corridor air duct of the air duct structure 1.

[0021] There is a pair of partition plates three, which are symmetrically arranged on both sides of the partition plate four and spaced apart in parallel with the partition plate four. The upper and lower ends of the partition plates three and four are respectively sealed and fixedly connected to the large top plate two and the large bottom plate two. The pair of partition plates three defines a corridor air duct and two side air ducts in the air duct structure two. The corridor air duct of the air duct structure two is located between the pair of partition plates three, and the two side air ducts of the air duct structure two are located on both sides of the corridor air duct of the air duct structure two.

[0022] The corridor air duct of the air duct structure 1 is connected to the corridor air duct of the air duct structure 2, and the two side air ducts of the air duct structure 1 are respectively connected to the two side air ducts of the air duct structure 2.

[0023] In one embodiment, a mesh plate 1 is provided in the corridor air duct of the second air duct structure, and a mesh plate 2 is provided in the side air duct of the second air duct structure.

[0024] In one embodiment, the air volume regulating mechanism further includes a distance measuring device for detecting the displacement of the movable block along the air flow direction.

[0025] In one embodiment, the cross section of the movable block is similar to the cross section of the through hole, and the movable block can block the through hole by moving along the airflow direction.

[0026] In one embodiment, a sound-absorbing tube is provided in the corridor air duct and the side air duct of the air duct structure one. One end of the sound-absorbing tube is sealed and fixedly connected to the baffle, and both ends of the sound-absorbing tube are open. The movable block is located in the sound-absorbing tube, and all the airflow passing through the through hole enters the sound-absorbing tube.

[0027] In one embodiment, a ventilation pipe is attached to the inner wall of the sound-absorbing tube, both ends of the ventilation pipe are open, and a plurality of ventilation holes are provided on the pipe wall of the ventilation pipe. Beneficial effects

[0028] 1. The air duct of the urban rail vehicle of the present application is directly isolated from the corridor air duct and the side air duct by setting a partition, and then an air volume adjustment mechanism is respectively set in the corridor air duct and the side air duct. The air volume adjustment mechanism realizes the relative movement of the movable block with respect to the baffle to adjust the cross-sectional area of ​​the through-hole for air flow through by controlling the suction force of the electromagnet on the armature, thereby adjusting the air volume in the corridor air duct and the side air duct. During the adjustment process, the movable block does not contact the baffle, and during the operation of the air volume adjustment mechanism, the various components do not have any contact, collision or transmission structure. Therefore, the air volume adjustment mechanism can adjust the air volume without noise, and the air volume adjustment mechanism does not require lubrication and maintenance, which effectively solves the problem of the current air volume adjustment mechanism generating noise that affects passengers during operation;

[0029] 2. The wind for urban rail vehicles of the present application includes an air duct structure 1 and an air duct structure 2. The air duct structure 2 is provided with an air outlet for injecting conditioned air into the car. The air duct structure 1 is located at the end of the car, and the air volume adjustment mechanism is arranged in the air duct structure 1. The air flow generated by the roof air conditioner enters the air duct structure 2 through the air duct structure 1, and is then injected into various places in the car. Since the ends of the car are generally provided with distribution rooms, toilets or washbasins, staff lounges, etc., there are no seats for passengers to sit here. Therefore, the noise generated by the air flow disturbance during the operation of the air volume adjustment mechanism will not affect the passengers in the riding area in the car, and the air flow velocity in the air duct is generally not high, and the noise generated by the air flow disturbance is also relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 1 is a structural schematic diagram of the air duct structure 1 of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the air duct structure 2 of the present invention;

[0033] Figure 3 This is an internal structure diagram of the air duct structure 1 of the present invention;

[0034] Figure 4 This is a front view of the air volume regulating mechanism 1 of the present invention;

[0035] Figure 5 1 is a top view of the air volume regulating mechanism 1 of the present invention;

[0036] Figure 6 Is a schematic structural diagram of an active block of the present invention;

[0037] Figure 7 It is a structural diagram of the movable block 2 of the present invention;

[0038] Figure 8 It is a schematic structural diagram of the silencer of the present invention;

[0039] Figure 9 yes Figure 8 Enlarged view of part A in .

[0040] The following are the descriptions of the reference numerals:

[0041] 100, air duct structure 1; 200, air duct structure 2;

[0042] 1. One integral roof panel; 11. One large roof panel; 12. One small roof panel;

[0043] 2. One integral bottom plate; 21. One side plate; 22. One large bottom plate; 23. Normally closed door;

[0044] 3. Air duct partition; 31. Partition 1; 32. Partition 2;

[0045] 4. Air volume adjustment mechanism 1; 40. Distance measuring device 1; 41. Baffle 1; 42. Through hole 1; 43. Movable block 1; 44. Elastic wire 1; 45. Elastic wire 2; 46. Electromagnet; 47. Mounting bar; 48. Armature; 49. Cavity;

[0046] 5. Air volume adjustment mechanism 2; 50. Distance measuring device 2; 51. Baffle 2; 52. Through hole 2; 53. Movable block 2; 54. Elastic wire 3;

[0047] 6. Silencer; 61. Sound-absorbing tube; 62. Ventilation pipe; 63. Ventilation hole;

[0048] 7. Integral roof panel 2; 71. Large roof panel 2; 72. Small roof panel 2;

[0049] 8. Integral bottom plate 2; 81. Large bottom plate 2; 82. Side plate 2; 83. Side air duct outlet;

[0050] 91. Partition three; 92. Partition four; 93. Mesh plate one; 94. Mesh plate two. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0053] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] The present invention proposes an air duct for urban rail vehicles, in which a partition is provided in the air duct for urban rail vehicles to directly isolate a corridor air duct and a side air duct, and then an air volume adjustment mechanism is provided in the corridor air duct and the side air duct respectively. The air volume adjustment mechanism realizes the movement of a movable block relative to the baffle to adjust the cross-sectional area of ​​the through hole for air flow through by controlling the suction force of an electromagnet 46 on an armature 48, and then adjusts the air volume in the corridor air duct and the side air duct. During the adjustment process, the movable block does not contact the baffle, and during the operation of the air volume adjustment mechanism, the various components do not have any contact, collision or transmission structure. Therefore, the air volume adjustment mechanism can adjust the air volume without noise, and the air volume adjustment mechanism does not require lubrication and maintenance, effectively solving the problem of the current air volume adjustment mechanism generating noise and affecting passengers during operation.

[0056] Specifically, in one embodiment of the invention, Figure 1-Figure 3 As shown, the air duct for urban rail vehicles includes an air duct structure 100 and an air duct structure 200, and the air duct structure 100 and the air duct structure 200 are aligned and connected. With this design, the airflow generated by the roof air conditioner can enter the air duct structure 200 through the air duct structure 100, and then be injected from the air duct structure 200 into various places in the passenger seating area in the car. The reason for designing that the airflow generated by the roof air conditioner enters the air duct structure 200 through the air duct structure 100, and then is injected from the air duct structure 200 into various places in the passenger seating area in the car is to keep the air duct structure 100 away from the passenger seating area in the car, so as to avoid the noise generated by the air flow disturbance during the operation of the air volume adjustment mechanism affecting the passengers in the seating area in the car.

[0057] In this embodiment, there are multiple air duct structures 200, and the multiple air duct structures 200 are arranged in a straight line and interconnected. The air duct structure 100 is located at one end of a row of air duct structures 200, and a row of air duct structures 200 is located directly above the passenger seating area in the car. The air duct structure 100 is located at one end of the car. Since the ends of the car are generally equipped with distribution rooms, toilets or washbasins, staff lounges, etc., there are no seats for passengers to sit there. Therefore, the design of the air duct structure 100 being located at one end of the car ensures that the noise generated by the air flow disturbance during the operation of the air volume adjustment mechanism will not affect the passengers in the seating area in the car; of course, in other embodiments, there can be only one air duct structure 200. In this case, the length of the air duct structure 200 is longer, which can cover the temperature adjustment needs of all passenger seating areas in a car.

[0058] In this embodiment, if Figure 1 and Figure 3 As shown, the air duct structure 100 includes an integral top plate 1 and an integral bottom plate 2 which are detachably sealed and fixedly connected to each other. The structural design of the integral top plate 1 and the integral bottom plate 2 adopted by the air duct structure 100 can not only optimize the air duct structure and reduce the number of parts, but also achieve the lightweight design goal according to the selection of materials. For example, the air duct structure 100 of the present application can adopt conventional lightweight composite materials with structural strength and thermal insulation performance to replace the original metal materials and thermal insulation materials, thereby reducing the types of materials and achieving the lightweight design requirements of the product. At the same time, the structural design of the integral top plate 1 and the integral bottom plate 2 reduces the assembly and bonding processes of parts and improves the assembly efficiency of the air duct product.

[0059] Specifically, such as Figure 1 and Figure 3 As shown, the integral top plate 1 includes a large top plate 11 and a small top plate 12 integrally formed on both sides of the large top plate 11, and the integral bottom plate 2 includes a large bottom plate 22 and a side plate 21 integrally formed on both sides of the large bottom plate 22. The side plate 21 and the small top plate 12 directly above it are detachably sealed and fixedly connected to form an air duct structure 100. In addition, a normally closed door 23 is provided on the large bottom plate 22 to facilitate the inspection and maintenance of the air volume regulating mechanism. Since the partition 2 32 is detachable, the normally closed door 23 can be set only in the corridor air duct, and the air volume regulating mechanism in the side air duct can be inspected and maintained by disassembling the partition 2 32.

[0060] In this embodiment, if Figure 2As shown, the air duct structure 200 includes an integral top plate 27 and an integral bottom plate 28 that are detachably sealed and fixedly connected to each other. The structural design of the integral top plate 27 and the integral bottom plate 28 adopted by the air duct structure 200 can not only optimize the air duct structure and reduce the number of parts, but also achieve the lightweight design goal according to the selection of materials. For example, the air duct structure 200 of the present application can adopt conventional lightweight composite materials with structural strength and thermal insulation performance to replace the original metal materials and thermal insulation materials, reducing the types of materials and achieving the lightweight design requirements of the product. At the same time, the structural design of the integral top plate 27 and the integral bottom plate 28 reduces the assembly and bonding processes of parts and improves the assembly efficiency of the air duct product.

[0061] Specifically, such as Figure 2 As shown, the integral top panel 2 7 includes a large top panel 2 71 and small top panels 2 72 integrally formed on both sides of the large top panel 2 71, and the integral bottom panel 2 8 includes a large bottom panel 2 81 and side panels 2 82 integrally formed on both sides of the large bottom panel 2 81. The side panels 2 82 and the small top panel 2 72 directly above them are detachably sealed and fixedly connected to form an air duct structure 2 200. A plurality of side air duct outlets 83 are arranged on the side panels 2 82 at intervals along the air flow direction, and the side air duct outlets 83 are connected to the air outlet under the seat through a connecting air duct. The large bottom panel 2 81 is provided with a corridor air duct outlet, which blows air directly into the carriage corridor through the corridor air duct outlet.

[0062] In this embodiment, if Figure 1-Figure 3 As shown, a plurality of partitions are provided through the air duct structure 100 and the air duct structure 2 200, and the plurality of partitions define corridor air ducts and side air ducts in the air duct structure 100 and the air duct structure 2 200. The corridor air duct and the side air duct of the air duct structure 100 are both provided with air volume regulating mechanisms for regulating the air volume in the corridor air duct and the side air duct.

[0063] Specifically, such as Figure 1-Figure 3As shown, the partition includes partition one 31, partition two 32, partition three 91 and partition four 92; there is a pair of partition two 32, which are symmetrically arranged on both sides of partition one 31 and spaced parallel to partition one 31, and the upper and lower ends of partition one 31 and partition two 32 are respectively sealed and fixedly connected to the large top plate one 11 and the large bottom plate one 22, and a pair of partition two 32 defines a corridor duct and two side ducts in the duct structure one 100, and the corridor duct of the duct structure one 100 is located between the pair of partition two 32, and the two side ducts of the duct structure one 100 are located on both sides of the corridor duct of the duct structure one 100; there is a pair of partition three 91, which are symmetrically arranged on both sides of partition four 92 and spaced parallel to partition four 92, and the upper and lower ends of partition three 91 and partition four 92 are respectively sealed and fixedly connected to the large top plate two 7 1 is sealed and fixedly connected to the large bottom plate 2 81, a pair of partition three 91 defines a corridor duct and two side ducts in the duct structure 2 200, the corridor duct of the duct structure 2 200 is located between the pair of partition three 91, and the two side ducts of the duct structure 2 200 are located on both sides of the corridor duct of the duct structure 2 200; the corridor duct of the duct structure 1 100 is connected to the corridor duct of the duct structure 2 200, and the two side ducts of the duct structure 1 100 are respectively connected to the two side ducts of the duct structure 2 200, the partition one 31 and the partition four 92 are integrally formed, the partition two 32 and the partition three 91 are integrally formed, the cross-sections of the duct structure 2 200 and the duct structure one 100 are congruent, so that the duct structure 2 200 and the duct structure one 100 are aligned and connected.

[0064] Further, such as Figure 2 As shown, a mesh plate 1 93 is provided in the corridor air duct of the air duct structure 2 200, and a mesh plate 2 94 is provided in the side air duct of the air duct structure 2 200. The mesh plate 1 93 and the mesh plate 2 94 can improve the distribution of the airflow in the side air duct and the corridor air duct, so that the airflow is evenly distributed throughout the side air duct and the corridor air duct, which is beneficial to the temperature balance in various passenger seating areas in the car.

[0065] In this embodiment, if Figure 1 As shown, the air volume regulating mechanism includes an air volume regulating mechanism 1 4 and an air volume regulating mechanism 2 5. The air volume regulating mechanism 1 4 is arranged in the corridor air duct of the air duct structure 100, and is used to adjust the air volume in the corridor air duct. The air volume regulating mechanism 2 5 is arranged in the side air duct of the air duct structure 100, and is used to adjust the air volume in the side air duct.

[0066] Specifically, such as Figure 1 、 Figure 4-Figure 6As shown, the air volume adjustment mechanism 4 includes: a baffle 41, a movable block 43, an armature 48, an electromagnet 46 and an elastic wire body 44. The baffle 41 is across the corridor air duct to divide the corridor air duct into two unconnected parts. A through hole 42 is provided on the baffle 41. The corridor air ducts on both sides of the baffle 41 are connected through the through hole 42; the movable block 43 is movable through the through hole 42 and does not contact the hole wall of the through hole 42 or the inner wall of the corridor air duct. This design can prevent the movable block 43 from colliding with the through hole 42 when it moves. The hole wall of hole 142 or the inner wall of the corridor air duct makes noise, thereby realizing the air volume adjustment mechanism 14 to adjust the air volume without noise. The movable block 143 moves along the airflow direction to change the free cross-sectional area of ​​the through hole 142. The free cross-sectional area is the difference between the cross-sectional area of ​​the through hole 142 and the cross-sectional area of ​​the movable block 143 located in the through hole 142. When the free cross-sectional area becomes smaller, the air flow through the through hole 142 becomes smaller. When the free cross-sectional area becomes larger, the air flow through the through hole 142 becomes larger, thereby adjusting the air volume in the corridor air duct. The airflow direction is Figure 1 and Figure 2 The length direction of the central corridor air duct and the side air duct.

[0067] Preferably, the cross section of the movable block 43 is similar to the cross section of the through hole 42. With this design, the movable block 43 can move along the direction of the airflow to block the through hole 42, so that the airflow cannot pass through the through hole 42, thereby better meeting the large-scale air volume adjustment requirements of the corridor air duct.

[0068] In this embodiment, if Figure 4-Figure 6 As shown, the armature 48 is provided at one end of the leeward side of the movable block 1 43, and the leeward side of the movable block 1 43 is connected to a plurality of elastic wire bodies 2 45, which are connected to the inner wall of the air duct structure 1 100. The movable block 1 43 is positioned in the corridor air duct by the plurality of elastic wire bodies 2 45, and when there is no airflow blowing towards the movable block 1 43, the movable block 1 43 passes through the through hole 1 42 and remains stationary, as shown in FIG. Figure 4-Figure 6 As shown, multiple elastic wire bodies 45 are distributed on the top, bottom, left and right sides of the leeward end of the movable block 43. With this design, the movable block 43 can be controlled by the electromagnet 46 and the elastic wire body 44 to move only in the direction of the airflow, and will not collide with the hole wall of the through hole 42 or the inner wall of the corridor air duct, thereby ensuring noiseless adjustment of the air volume.

[0069] Preferably, Figure 6 As shown, a cavity 49 is provided in the movable block 43. Such a design can reduce the weight of the movable block 43, and is conducive to the electromagnet 46 and the elastic wire body 44 controlling the movable block 43 to move only along the direction of the airflow. At this time, the armature 48 is fixedly installed in the cavity 49.

[0070] In this embodiment, if Figure 4 and Figure 5 As shown, the electromagnet 46 is located at one end of the leeward side of the movable block 1 43 and is spaced apart from the armature 48. The electromagnet 46 is fixedly connected to the inner wall of the air duct structure 100 via the mounting strip 47. When the electromagnet 46 is energized to generate a large electromagnetic attraction, it attracts the armature 48 and drives the movable block 1 43 to move closer to the electromagnet 46 along the airflow direction. Figure 1 As shown, one end of the elastic wire body 44 is connected to the windward end of the movable block 43, and the other end of the elastic wire body 44 is connected to the air duct structure 100. When the electromagnet 46 is powered off or the electromagnetic suction force is reduced, the elastic wire body 44 pulls the movable block 43 to move away from the electromagnet 46 along the airflow direction. Therefore, the movable block 43 can be moved along the airflow direction to change the free cross-sectional area of ​​the through hole 42 by controlling the suction force of the electromagnet 46 on the armature 48.

[0071] In this embodiment, the air duct structure 100 and the air duct structure 2 200 are made of conventional lightweight composite materials and are not affected by the suction of the electromagnet 46. That is, the overall top plate 1, the overall bottom plate 2, and the air duct partition 3 are made of conventional lightweight composite materials. The air duct partition 3 includes a partition 1 31 and a partition 2 32. The baffle 1 41 and the movable block 1 43 are also made of conventional lightweight composite materials. This design ensures that they are not affected by the suction of the electromagnet 46, so that the air volume adjustment mechanism 14 can work normally.

[0072] In this embodiment, the elastic wire body 1 44 and the elastic wire body 2 45 are springs or elastic ropes, and the springs are not affected by the suction force of the electromagnet 46, thereby ensuring their normal operation.

[0073] It can be seen that the air volume adjustment mechanism 4 of this embodiment realizes the movement of the movable block 43 relative to the baffle 41 to adjust the size of the free cross-sectional area by controlling the suction force of the electromagnet 46 on the armature 48, thereby adjusting the air volume in the corridor air duct. During the adjustment process, the movable block 43 does not contact the baffle 41. During the operation of the air volume adjustment mechanism 4, there is no contact, collision or transmission structure among the components. Therefore, the air volume adjustment mechanism 4 can adjust the air volume without noise, and the air volume adjustment mechanism 4 does not require lubrication and maintenance, which saves time and effort, and effectively solves the problem of the current air volume adjustment mechanism generating noise during operation that affects passengers.

[0074] In this embodiment, the air volume regulating mechanism 1 4 further includes a distance measuring device 1 40 for detecting the displacement of the movable block 1 43 along the air flow direction.

[0075] In this embodiment, if Figure 1 and Figure 7As shown, the difference between the air volume regulating mechanism 2 5 and the air volume regulating mechanism 1 4 is only in the shapes of the baffle, the through hole, and the movable block. The remaining structures are the same, that is, the air volume regulating mechanism 2 5 at least has a distance measuring device 2 50, a baffle 2 51, a movable block 2 53, an elastic wire 3 54, and a through hole 2 52. Figure 1 As shown, the function of the distance measuring device 2 50 is to detect the displacement of the movable block 2 53 along the direction of the air flow. The baffle 2 51 is across the side air duct. The baffle 2 51 is provided with a through hole 2 52. The movable block 2 53 moves through the through hole 2 52. The leeward end of the movable block 2 53 is connected to multiple elastic wire bodies 2 45 like the movable block 1 43. The multiple elastic wire bodies 2 45 are connected to the inner wall of the air duct structure 1 100. The movable block 2 53 is positioned in the side air duct by the multiple elastic wire bodies 2 45. When there is no airflow blowing towards the movable block 2 53, the movable block 2 The second 53 passes through the through hole 2 52 and remains stationary. The setting position of the armature 48 and the electromagnet 46 in the air volume adjustment mechanism 2 5 is the same as that of the air volume adjustment mechanism 1 4. The structure and function of the elastic wire body 3 54 are the same as those of the elastic wire body 1 44. One end of the elastic wire body 3 54 is connected to the windward side end of the movable block 2 53, and the other end of the elastic wire body 3 54 is connected to the air duct structure 1 100. The elastic wire body 3 54 and the electromagnet 46 cooperate with each other to control the movable block 2 53 to move along the air flow direction to adjust the size of the vacant cross-sectional area of ​​the through hole 2 52, and then adjust the air volume in the side air duct.

[0076] In most cases, the air conditioner on the roof of the urban rail vehicle will not maintain high-power operation for a long time, but will maintain operation for a long time at an economical power. At this time, the wind speed in the corridor duct and the side duct is not high. Therefore, the air flow disturbance caused by the movement of the movable block during the operation of the air volume adjustment mechanism will not generate much air flow noise, and will not affect the personnel in the power distribution room, toilet or washbasin, and staff lounge of the car. In addition, the air duct structure 100 is arranged at the end of the car, away from the passenger seating area in the car, so the air flow noise will not affect the passengers in the passenger seating area in the car. After all, the noise that affects the passenger riding experience mainly comes from the contact and collision between the components during the operation of the air volume adjustment mechanism itself and the transmission friction caused by poor lubrication. The air flow noise is small and is not the main reason affecting the passenger riding experience.

[0077] However, when urban rail vehicles are working in harsh environments, such as in high-altitude cold or very hot areas, the air conditioner on the top of the urban rail vehicle will maintain high-power operation for a long time. At this time, the air flow disturbance caused by the movement of the movable block during the operation of the air volume adjustment mechanism will generate air flow noise, which will have a certain impact on the personnel in the power distribution room, toilet or washbasin, and staff lounge of the car, but will still not affect the passengers in the passenger seating area of ​​the car. In order to solve the impact of air flow noise on the personnel in the power distribution room, toilet or washbasin, and staff lounge of the car, Figure 8 and Figure 9 As shown, the corridor air duct and the side air duct of the air duct structure 100 are both provided with a sound-absorbing tube 61. One end of the sound-absorbing tube 61 is sealed and fixedly connected to the baffle, and both ends of the sound-absorbing tube 61 are open. The movable block is located in the sound-absorbing tube 61. The airflow passing through the through hole all enters the sound-absorbing tube 61 and then flows out from the other end of the sound-absorbing tube 61. The sound-absorbing tube 61 is made of sound-absorbing material. This design can solve the impact of airflow noise on people in the distribution room, toilet or washbasin, and staff lounge of the carriage.

[0078] Further, such as Figure 8 and Figure 9 As shown, a ventilation pipe 62 is attached to the inner wall of the sound-absorbing tube 61, both ends of the ventilation pipe 62 are open, and a plurality of ventilation holes 63 are provided on the tube wall of the ventilation pipe 62. The material of the ventilation pipe 62 is not attracted by the electromagnetic force, and the outer wall of the ventilation pipe 62 is close to the inner wall of the sound-absorbing tube 61. This design can enhance the sound-absorbing performance of the sound-absorbing tube 61. The sound-absorbing tube 61 and the ventilation pipe 62 constitute a silencer 6, which eliminates the impact of airflow noise on people in the distribution room, toilet or washbasin, and staff lounge of the carriage.

[0079] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air duct for urban rail vehicles, characterized in that: It includes an air duct structure 1 and an air duct structure 2, wherein the air duct structure 1 and the air duct structure 2 are aligned and connected; A plurality of partitions are provided through the air duct structure 1 and the air duct structure 2, and the plurality of partitions define corridor air ducts and side air ducts in the air duct structure 1 and the air duct structure 2. The corridor air duct and the side air duct of the air duct structure 1 are both provided with air volume adjustment mechanisms for adjusting the air volume in the corridor air duct and the side air duct; The air volume regulating mechanism comprises: A baffle extends across the corridor air duct or the side air duct, wherein the baffle is provided with a through hole, and the corridor air duct or the side air duct on both sides of the baffle are connected through the through hole; A movable block is provided to move through the through hole without contacting the hole wall of the through hole, the inner wall of the corridor air duct and the side air duct. The movable block moves along the airflow direction to change the free cross-sectional area of ​​the through hole, and the free cross-sectional area is the difference between the cross-sectional area of ​​the through hole and the cross-sectional area of ​​the movable block located in the through hole; An armature is provided at one end of the leeward side of the movable block, the one end of the movable block being connected to a plurality of elastic wire bodies 2, which are connected to the air duct structure 1. The movable block is positioned in the corridor air duct or the side air duct by the plurality of elastic wire bodies 2, and when no airflow blows toward the movable block, the movable block passes through the through hole and remains stationary; An electromagnet is located at one end of the leeward side of the movable block and is spaced apart from the armature. The electromagnet is fixedly connected to the air duct structure through a mounting strip. When the electromagnet is energized, it attracts the armature and drives the movable block to move closer to the electromagnet along the airflow direction. An elastic wire body 1, one end of which is connected to an end of the movable block on the windward side, and the other end of which is connected to an air duct structure 1, wherein the elastic wire body 1 pulls the movable block to move away from the electromagnet in the direction of the airflow; There are multiple air duct structures 2, which are arranged in a straight line and connected to each other, and the air duct structure 1 is located at one end of a row of air duct structures 2; The cross section of the movable block is similar to the cross section of the through hole, and the movable block can block the through hole by moving along the air flow direction.

2. The air duct for urban rail vehicles according to claim 1, characterized in that: The air duct structure 2 includes an integral top plate 2 and an integral bottom plate 2 which are detachably sealed and fixedly connected up and down. The integral top plate 2 includes a large top plate 2 and a small top plate 2 arranged on both sides of the large top plate 2. The integral bottom plate 2 includes a large bottom plate 2 and a side plate 2 arranged on both sides of the large bottom plate 2. The side plate 2 and the small top plate 2 directly above it are detachably sealed and fixedly connected. A plurality of side duct outlets are arranged on the side plate 2 at intervals along the airflow direction, and a corridor duct outlet is provided on the large bottom plate 2.

3. The air duct for urban rail vehicles according to claim 2, characterized in that: The air duct structure includes an integral top plate and an integral bottom plate that are detachably sealed and fixedly connected to each other. The integral top plate includes a large top plate and a small top plate arranged on both sides of the large top plate. The integral bottom plate includes a large bottom plate and a side plate arranged on both sides of the large bottom plate. The side plate and the small top plate directly above it are detachably sealed and fixedly connected, and a normally closed door is provided on the large bottom plate.

4. The air duct for urban rail vehicles according to claim 3, characterized in that: The partitions include partition one, partition two, partition three and partition four; There is a pair of partition plates 2, which are symmetrically arranged on both sides of partition plate 1 and spaced apart in parallel with partition plate 1. The upper and lower ends of partition plates 1 and 2 are respectively sealed and fixedly connected to large top plate 1 and large bottom plate 1. The pair of partition plates 2 define a corridor air duct and two side air ducts in the air duct structure 1. The corridor air duct of the air duct structure 1 is located between the pair of partition plates 2, and the two side air ducts of the air duct structure 1 are located on both sides of the corridor air duct of the air duct structure 1. There is a pair of partition plates three, which are symmetrically arranged on both sides of the partition plate four and spaced apart in parallel with the partition plate four. The upper and lower ends of the partition plates three and four are respectively sealed and fixedly connected to the large top plate two and the large bottom plate two. The pair of partition plates three defines a corridor air duct and two side air ducts in the air duct structure two. The corridor air duct of the air duct structure two is located between the pair of partition plates three, and the two side air ducts of the air duct structure two are located on both sides of the corridor air duct of the air duct structure two. The corridor air duct of the air duct structure 1 is connected to the corridor air duct of the air duct structure 2, and the two side air ducts of the air duct structure 1 are respectively connected to the two side air ducts of the air duct structure 2.

5. The air duct for urban rail vehicles according to claim 4, characterized in that: A mesh plate 1 is provided in the corridor air duct of the second air duct structure, and a mesh plate 2 is provided in the side air duct of the second air duct structure.

6. The air duct for urban rail vehicles according to claim 1, characterized in that: The air volume regulating mechanism further comprises a distance measuring device for detecting the displacement of the movable block along the air flow direction.

7. The air duct for urban rail vehicles according to claim 1, characterized in that: Sound-absorbing tubes are provided in the corridor air duct and the side air duct of the air duct structure 1. One end of the sound-absorbing tube is sealed and fixedly connected to the baffle, and both ends of the sound-absorbing tube are open. The movable block is located in the sound-absorbing tube, and all the airflow passing through the through hole enters the sound-absorbing tube.

8. The air duct for urban rail vehicles according to claim 7, characterized in that: A ventilation pipe is attached to the inner wall of the sound-absorbing tube, both ends of the ventilation pipe are open, and a plurality of ventilation holes are arranged on the pipe wall of the ventilation pipe.

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