Air duct for urban rail vehicle

Abstract

The invention discloses an air duct for an urban rail vehicle, which comprises an air duct structure I and an air duct structure II, and the air duct structure I and the air duct structure II are aligned and communicated; a plurality of partition plates are arranged in the first air duct structure and the second air duct structure in a penetrating mode, and a corridor passing air duct and a side air duct are defined by the partition plates in the first air duct structure and the second air duct structure. The air volume adjusting mechanism has the beneficial effects that the movable block moves relative to the baffle to adjust the cross sectional area of the through hole for air flow to pass through by controlling the suction force of the electromagnet to the armature, and then the air volume in the corridor-passing air channel and the side air channel is adjusted, and the movable block does not make contact with the baffle in the adjusting process; in the working process of the air volume adjusting mechanism, all parts do not have any contact collision and transmission structure, so that the air volume adjusting mechanism can adjust the air volume without noise, the air volume adjusting mechanism does not need to be lubricated and maintained, and the problem that noise is generated when a current air volume adjusting mechanism works to affect passengers is effectively solved.

Description

Technical Field

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

[0002] The air duct is a structure used to transport air for air conditioning on urban rail vehicles. 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, thus ensuring that the temperature in various parts of the car is suitable.

[0003] Common air duct structures are shown in patents with application numbers CN118144830B, CN117565910A, and CN118695541A. The air duct extending along the length direction of the car on the top of the car is divided into corridor air duct and side air duct. The corridor air duct is connected to the air outlet on the top of the inner side of the car and blows air directly into the corridor of the car. The side air duct is connected to the air outlet under the seat through the air duct in the side wall of the car.

[0004] In order to ensure that the temperature in the car is appropriate, especially the temperature difference between the air at the bottom of the car and near the passengers' heads is within an appropriate range, the existing train air duct structures are equipped with air volume adjustment mechanisms to adjust the air volume in the corridor air ducts and side air ducts, so as to achieve balanced air temperature at the bottom of the car and near the passengers' heads, and avoid causing discomfort to passengers.

[0005] The air volume distribution and adjustment device disclosed in the patent application 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 to the carriage to affect the passenger experience. The reason for the working noise is poor contact lubrication of the transmission parts, 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 smeared with lubricating grease, otherwise the hot air flow in the air duct in the heating state heats the lubricating grease to produce odor and pollute the air in the air duct, and the output shaft, gear, turntable, and teeth are in an environment where they are blown by cold and hot air flows for a long time, which aggravates the poor contact lubrication of the transmission parts.

[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 regulating mechanism in advance to adjust the air volume distribution in advance. For example, when the train arrives at the station, the air volume regulating mechanism is controlled while passengers are getting on and off the train and the interior environment is noisy. Even if noise is generated at this time, 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 regulating 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 regulating mechanism in the existing air duct generates noise when working, affecting the riding experience of passengers.

[0008] In order to solve the above problems, the present invention proposes an air duct for an urban rail vehicle, 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 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 adjustment mechanism comprises: A baffle plate is disposed across the corridor air duct or the side air duct, wherein the baffle plate is provided with through holes, and the corridor air ducts or the side air ducts on both sides of the baffle plate are connected through the through holes; A movable block is movably arranged through the through hole and does not contact 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 air flow 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; The armature is arranged at one end of the leeward side of the movable block, and the one end of the leeward side of the movable block is connected to a plurality of elastic wire bodies 2, and the plurality of elastic wire bodies 2 are connected to the air duct structure 1, and 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 there is no airflow blowing toward the movable block, the movable block passes through the through hole and remains motionless; The 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, the armature is attracted to drive 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 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 airflow direction.

[0009] In one embodiment, there are a plurality of the air duct structures 2, the plurality of air duct structures 2 are arranged in a straight line and are interconnected, and the air duct structure 1 is located at one end of a row of air duct structures 2; 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 air duct outlets are arranged on the side plate 2 at intervals along the airflow direction, and the large bottom plate 2 is provided with a corridor air duct outlet.

[0010] In one embodiment, the air duct structure 1 includes an integral top plate 1 and an integral bottom plate 1 which are detachably sealed and fixedly connected to each other, the integral top plate 1 includes a large top plate 1 and a small top plate 1 arranged on both sides of the large top plate 1, the integral bottom plate 1 includes a large bottom plate 1 and a side plate 1 arranged on both sides of the large bottom plate 1, the side plate 1 and the small top plate 1 directly above it are detachably sealed and fixedly connected, and a normally closed door is provided on the large bottom plate 1.

[0011] In one embodiment, the partition includes 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 from each other 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. A pair of partition plates 2 define a corridor duct and two side ducts in duct structure 1. The corridor duct of duct structure 1 is located between the pair of partition plates 2, and the two side ducts of duct structure 1 are located on both sides of the corridor duct of duct structure 1. There is a pair of partitions three, which are symmetrically arranged on both sides of partition four and spaced apart in parallel with partition four. The upper and lower ends of partition three and partition four are respectively sealed and fixedly connected to large top plate two and large bottom plate two. A pair of partitions three define a corridor duct and two side ducts in duct structure two. The corridor duct of duct structure two is located between a pair of partitions three, and the two side ducts of duct structure two are located on both sides of the corridor duct of duct structure two. The corridor air duct of the air duct structure one is connected to the corridor air duct of the air duct structure two, and the two side air ducts of the air duct structure one are connected to the two side air ducts of the air duct structure two respectively.

[0012] In one embodiment, a mesh plate 1 is provided in the corridor air duct of the air duct structure 2, and a mesh plate 2 is provided in the side air duct of the air duct structure 2.

[0013] 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.

[0014] 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 air flow direction.

[0015] 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, both ends of the sound absorbing tube are open, the movable block is located in the sound absorbing tube, and the airflow passing through the through hole all enters the sound absorbing tube.

[0016] 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 arranged on the pipe wall of the ventilation pipe. Beneficial Effects

[0017] 1. The air duct for urban rail vehicles 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 plate to adjust the cross-sectional area of ​​the through hole for air flow to pass through by controlling the suction force of the electromagnet on the armature, 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 plate, 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 need lubrication and maintenance, which effectively solves the problem that the current air volume adjustment mechanism generates noise when working and affects passengers; 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 air-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 airflow 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 there. Therefore, the noise generated by the airflow disturbance during the operation of the air volume adjustment mechanism will not affect the passengers in the seating area in the car, and the air flow velocity in the air duct is generally not high, and the noise generated by the airflow disturbance is also relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0019] Figure 1 It is a structural schematic diagram of the air duct structure 1 of the present invention; Figure 2 It is a structural schematic diagram of the air duct structure 2 of the present invention; Figure 3 This is an internal structure diagram of the air duct structure 1 of the present invention; Figure 4 This is a front view of the air volume regulating mechanism 1 of the present invention; Figure 5 is a top view of the air volume regulating mechanism 1 of the present invention; Figure 6 Is a schematic structural diagram of an active block of the present invention; Figure 7 It is a structural schematic diagram of the movable block 2 of the present invention; Figure 8 It is a schematic diagram of the structure of the muffler device of the present invention; Fig. 9 yes Figure 8 Enlarged view of part A in .

[0020] The following are the descriptions of the reference numerals: 100, air duct structure 1; 200, air duct structure 2; 1. One integral top plate; 11. One large top plate; 12. One small top plate; 2. One integral bottom plate; 21. One side plate; 22. One large bottom plate; 23. Normally closed door; 3. Air duct partition; 31. Partition 1; 32. Partition 2; 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 body 1; 45. Elastic wire body 2; 46. Electromagnet; 47. Mounting strip; 48. Armature; 49. Cavity; 5. Air volume regulating mechanism 2; 50. Distance measuring device 2; 51. Baffle 2; 52. Through hole 2; 53. Movable block 2; 54. Elastic line 3; 6. Silencer; 61. Sound-absorbing tube; 62. Ventilation pipe; 63. Ventilation hole; 7. Overall roof two; 71. Large roof two; 72. Small roof two; 8. Integral bottom plate 2; 81. Large bottom plate 2; 82. Side plate 2; 83. Side air duct outlet; 91. Partition three; 92. Partition four; 93. Mesh plate one; 94. Mesh plate two. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] 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 components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] 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 used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. 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 the field to implement. When the combination of technical solutions is 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.

[0025] 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 air volume regulating mechanisms are respectively provided in the corridor air duct and the side air duct, and the air volume regulating mechanism realizes the relative movement of a movable block with respect to a baffle plate to regulate the cross-sectional area of ​​a through hole through which air flows through by controlling the suction force of an electromagnet 46 on an armature 48, and then regulates the air volume in the corridor air duct and the side air duct, during the regulation process, the movable block does not contact the baffle plate, and during the operation of the air volume regulating mechanism, the various components do not have any contact, collision or transmission structure, so the air volume regulating mechanism can regulate the air volume without noise, and the air volume regulating mechanism does not need lubrication and maintenance, which effectively solves the problem that the current air volume regulating mechanism generates noise when working and affects passengers.

[0026] 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. In 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 why the airflow generated by the roof air conditioner is designed to 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 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.

[0027] In the present 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 end of the car is generally provided with a distribution room, a toilet or a washbasin, a staff lounge, 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 may 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.

[0028] In this embodiment, if Figure 1 and Figure 3As 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 in 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 components, thereby improving the assembly efficiency of the air duct product.

[0029] Specifically, Figure 1 and Figure 3 As shown, the overall 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 overall 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, and 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 only provided 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.

[0030] In this embodiment, if Figure 2 As shown, the air duct structure 200 includes an integral top plate 27 and an integral bottom plate 28 which 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 in 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, 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 27 and the integral bottom plate 28 reduces the assembly and bonding processes of parts and components, thereby improving the assembly efficiency of the air duct product.

[0031] Specifically, Figure 2As shown, the integral top plate 27 comprises a large top plate 271 and a small top plate 272 integrally formed on both sides of the large top plate 271, the integral bottom plate 28 comprises a large bottom plate 281 and a side plate 282 integrally formed on both sides of the large bottom plate 281, the side plate 282 and the small top plate 272 directly above it are detachably sealed and fixedly connected to form an air duct structure 200, a plurality of side air duct outlets 83 are arranged on the side plate 282 at intervals along the air flow direction, the side air duct outlets 83 are connected to the air outlets under the seats through connecting air ducts, and the large bottom plate 281 is provided with corridor air duct outlets, through which air is blown directly into the corridor of the carriage. 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.

[0032] Specifically, Figure 1-Figure 3 As shown, the partition includes a partition 1 31, a partition 2 32, a partition 3 91 and a partition 4 92; the partition 2 32 has a pair and is symmetrically arranged on both sides of the partition 1 31 and is spaced apart in parallel with the partition 1 31. The upper and lower ends of the partition 1 31 and the partition 2 32 are respectively sealed and fixedly connected to the large top plate 11 and the large bottom plate 22. A pair of partition 2 32 defines a corridor air duct and two side air ducts in the air duct structure 100. The corridor air duct of the air duct structure 100 is located between the pair of partition 2 32, and the two side air ducts of the air duct structure 100 are located on both sides of the corridor air duct of the air duct structure 100; the partition 3 91 has a pair and is symmetrically arranged on both sides of the partition 4 92 and is spaced apart in parallel with the partition 4 92. The upper and lower ends of the partition 3 91 and the partition 4 92 are respectively sealed and fixedly connected to the large top plate 11 and the large bottom plate 22. 1 is sealed and fixedly connected to the large bottom plate 2 81, a pair of partition three 91 defines a corridor air duct and two side air ducts in the air duct structure 200, the corridor air duct of the air duct structure 200 is located between the pair of partition three 91, and the two side air ducts of the air duct structure 200 are located on both sides of the corridor air duct of the air duct structure 200; the corridor air duct of the air duct structure 100 is connected with the corridor air duct of the air duct structure 200, and the two side air ducts of the air duct structure 1 100 are respectively connected with the two side air ducts of the air 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 air duct structure 2 200 and the air duct structure one 100 are congruent, so that the air duct structure 2 200 and the air duct structure one 100 are aligned and connected.

[0033] Further, such as Figure 2As shown, a mesh plate 1 93 is provided in the corridor air duct of the air duct structure 200, and a mesh plate 2 94 is provided in the side air duct of the air duct structure 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 in the side air duct and the corridor air duct, which is beneficial to the temperature balance in various places in the passenger seating area in the car.

[0034] 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.

[0035] Specifically, Figure 1 , Figure 4-Figure 6 As shown, the air volume regulating 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. The baffle 41 is provided with a through hole 42, and 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 42 or the inner wall of the corridor air duct emits noise, thereby realizing noiseless air volume adjustment by air volume adjustment mechanism 4. The movable block 43 moves along the air flow direction to change the spare cross-sectional area of ​​through hole 42. The spare cross-sectional area is the difference between the cross-sectional area of ​​through hole 42 and the cross-sectional area of ​​movable block 43 located in through hole 42. When the spare cross-sectional area becomes smaller, the air flow through through hole 42 becomes smaller. When the spare cross-sectional area becomes larger, the air flow through through hole 42 becomes larger, thereby adjusting the air volume in the corridor air duct. The air flow direction is Figure 1 and Figure 2 The length direction of the central corridor air duct and the side air duct.

[0036] 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 airflow direction to block the through hole 42, so that the airflow cannot pass through the through hole 42, thereby better meeting the large-range air volume adjustment requirements of the corridor air duct.

[0037] In this embodiment, if Figure 4-Figure 6As shown, the armature 48 is arranged at one end of the leeward side of the movable block 43, and the leeward side of the movable block 43 is connected to a plurality of elastic wire bodies 45, and the plurality of elastic wire bodies 45 are connected to the inner wall of the air duct structure 100, and the movable block 43 is positioned in the corridor air duct by the plurality of elastic wire bodies 45, and when there is no airflow blowing toward the movable block 43, the movable block 43 passes through the through hole 42 and remains motionless, as shown in FIG. Figure 4-Figure 6 As shown, a plurality of elastic wire bodies 45 are distributed on the top, bottom, left and right sides of one end of the leeward side of the movable block 43. With this design, the movable block 43 can be subsequently controlled by the electromagnet 46 and the elastic wire body 44 to move only along the airflow direction without colliding with the hole wall of the through hole 42 or the inner wall of the corridor air duct, thereby ensuring noise-free adjustment of the air volume.

[0038] Preferably, Figure 6 As shown, a cavity 49 is provided in the movable block 43. Such a design can reduce the dead weight of the movable block 43, and facilitate the electromagnet 46 and the elastic wire body 44 to control the movable block 43 to move only along the airflow direction. At this time, the armature 48 is fixedly installed in the cavity 49.

[0039] 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 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 through the mounting strip 47. When the electromagnet 46 is energized to generate a large electromagnetic suction force, the armature 48 is attracted to drive the movable block 43 to move along the airflow direction close to the electromagnet 46; 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.

[0040] In this embodiment, the air duct structure 100 and the air duct structure 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.

[0041] 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.

[0042] It can be seen that the air volume regulating mechanism 4 of the present embodiment controls the suction force of the electromagnet 46 on the armature 48 to realize the movement of the movable block 43 relative to the baffle 41 to adjust the size of the free cross-sectional area, and then adjusts the air volume in the corridor air duct. During the adjustment process, the movable block 43 is not in contact with the baffle 41, and the various components of the air volume regulating mechanism 4 do not have any contact, collision or transmission structure during the operation of the air volume regulating mechanism 4. Therefore, the air volume regulating mechanism 4 can adjust the air volume without noise, and the air volume regulating mechanism 4 does not require lubrication and maintenance, which saves time and effort, and effectively solves the problem of noise generated by the current air volume regulating mechanism during operation that affects passengers.

[0043] In this embodiment, the air volume regulating mechanism 4 further includes a distance measuring device 40 for detecting the displacement of the movable block 43 along the air flow direction.

[0044] In this embodiment, if Figure 1 and Figure 7 As shown, the difference between the air volume regulating mechanism 2 5 and the air volume regulating mechanism 1 4 is that the shapes of the baffle, the through hole and the movable block are different, and 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 body 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 air flow direction. 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 with a plurality of elastic wire bodies 2 45 like the movable block 1 43. The plurality of 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 plurality of elastic wire bodies 2 45. When there is no air flow blowing toward the movable block 2 53, the movable block 2 The second 53 passes through the through hole 252 and remains stationary. The setting position of the armature 48 and the electromagnet 46 in the air volume regulating mechanism 25 is the same as that of the air volume regulating mechanism 14. The structure and function of the elastic wire body 3 54 are the same as those of the elastic wire body 144. 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 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.

[0045] 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 working 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.

[0046] However, when the urban rail vehicle is working in a harsh environment, such as in a high-cold or very hot area, the air conditioner on the top of the car 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 cause air flow noise to the personnel in the power distribution room, toilet or washbasin, and staff lounge of the car. It will have a certain impact, but it will not affect the passengers in the passenger seating area in 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, such as Figure 8 and Fig. 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, both ends of the sound absorbing tube 61 are open, the movable block is located in the sound absorbing tube 61, and 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. Such a design can solve the impact of airflow noise on people in the distribution room, toilet or washbasin, and staff lounge of the carriage.

[0047] Further, such as Figure 8 and Fig. 9 As shown, a vent pipe 62 is attached to the inner wall of the sound absorbing tube 61, both ends of the vent pipe 62 are open, and a plurality of air holes 63 are provided on the tube wall of the vent pipe 62. The material of the vent pipe 62 is not attracted by the electromagnetic force, and the outer wall of the vent pipe 62 is in close contact with the inner wall of the sound absorbing tube 61. Such a design can enhance the sound-absorbing performance of the sound absorbing tube 61. The sound absorbing tube 61 and the vent pipe 62 constitute a silencer 6, which eliminates the influence of airflow noise on personnel in the power distribution room, toilet or washbasin, and staff lounge of the carriage.

[0048] 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 changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air duct for an urban rail vehicle, characterized in that: It comprises 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 adjustment mechanism comprises: A baffle plate is disposed across the corridor air duct or the side air duct, wherein the baffle plate is provided with through holes, and the corridor air ducts or the side air ducts on both sides of the baffle plate are connected through the through holes; A movable block is movably arranged through the through hole and does not contact 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 air flow 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; The armature is arranged at one end of the leeward side of the movable block, and the one end of the leeward side of the movable block is connected to a plurality of elastic wire bodies 2, and the plurality of elastic wire bodies 2 are connected to the air duct structure 1, and 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 there is no airflow blowing toward the movable block, the movable block passes through the through hole and remains motionless; The 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, the armature is attracted to drive 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 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 airflow direction.

2. The air duct for urban rail vehicles according to claim 1, characterized in that: 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 second air duct structures; 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 air duct outlets are arranged on the side plate 2 at intervals along the airflow direction, and the large bottom plate 2 is provided with a corridor air duct outlet.

3. The air duct for urban rail vehicles according to claim 2, characterized in that: The air duct structure 1 includes an integral top plate 1 and an integral bottom plate 1 which are detachably sealed and fixedly connected to each other from top to bottom. The integral top plate 1 includes a large top plate 1 and a small top plate 1 arranged on both sides of the large top plate 1. The integral bottom plate 1 includes a large bottom plate 1 and a side plate 1 arranged on both sides of the large bottom plate 1. The side plate 1 and the small top plate 1 directly above it are detachably sealed and fixedly connected, and a normally closed door is arranged on the large bottom plate 1.

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

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

6. The air duct for urban rail vehicles according to claim 1, characterized in that: The air volume regulating mechanism also includes 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: 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.

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

9. The air duct for urban rail vehicles according to claim 8, 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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