Ram air intake guide structure and rail vehicle

Abstract

The present invention discloses a ram air intake drainage structure and a rail vehicle, wherein the ram air intake drainage structure comprises an air intake pipe and a two-way air intake part, each of the air intake parts comprises an air intake side edge, an air intake front edge and an air intake bottom surface for forming an air intake flow channel, an air intake is formed between the air intake side edges, and the air intake is connected to the air intake pipe via the air intake flow channel; the air intake side edge is in a gradually expanding shape in cross section, and the air intake side edge gradually widens from the air intake front edge to the direction where the air intake pipe is located, the depth from the air intake to the air intake bottom surface gradually deepens from the air intake front edge to the direction where the air intake pipe is located, and the width of the air intake widens from the air intake front edge to the direction where the air intake pipe is located. The ram air intake drainage structure can effectively solve the problem of fresh air supply and condensation heat dissipation difficulties under ultra-high speed and low vacuum operating conditions of vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a side ram air intake and drainage structure of a rail vehicle. The present invention also relates to a rail vehicle provided with the ram air intake and drainage structure. Background Art

[0002] With the continuous increase in the speed level of rail vehicles, especially maglev vehicles, the operating conditions and scenarios of vehicles are gradually developing towards ultra-high-speed and low-vacuum tunnels.

[0003] In this case, due to the aerodynamic impact of high-speed vehicles and the scene characteristics of low air mass flow, the problem of difficulty in introducing fresh air into the vehicle and insufficient condensation and heat dissipation of the air conditioning system is prominent. One method is to open the side of the vehicle, set a waterproof and filter grille at the opening, and use the fan located inside the air conditioning unit to draw in air.

[0004] However, the amount of air introduced by this method is closely related to the performance of the fan and is usually used for medium and high-speed vehicles. Under ultra-high-speed and low-vacuum tunnel operating conditions, the air intake effect is not ideal. Summary of the invention

[0005] The object of the present invention is to provide a ram air intake drainage structure to solve the problem of difficulty in fresh air supply and condensation heat dissipation under ultra-high speed and low vacuum operating conditions of a vehicle.

[0006] The present invention also relates to a rail vehicle provided with the ram air intake guide structure.

[0007] To achieve the above-mentioned purpose, the present invention provides a ram air intake diversion structure, including an air intake pipe located in the middle position of the bottom and a two-way air intake part symmetrically arranged in the front-to-back direction with the air intake pipe as the center, each of the air intake parts respectively includes an air intake side edge, an air intake front edge and an air intake bottom surface for forming an intake flow channel, an air intake is formed between the air intake side edges, and the air intake is connected to the air intake pipe via the intake flow channel; the air intake side edge is in a gradually expanding shape in cross section, and the air intake side edge gradually widens from the air intake front edge toward the direction where the air intake pipe is located, the depth from the air intake to the air intake bottom surface gradually deepens from the air intake front edge toward the direction where the air intake pipe is located, and the width of the air intake widens from the air intake front edge toward the direction where the air intake pipe is located.

[0008] Optionally, the air inlet includes a first air inlet section and a second air inlet section from the front edge of the air inlet to the direction where the air inlet pipe is located, the width of the first air inlet section is equal, and the width of the second air inlet section gradually widens.

[0009] Optionally, an air inlet upper cover plate located in the middle is provided between the air inlet parts.

[0010] Optionally, a guide structure corresponding to the central position of the air intake pipe is provided below the upper cover plate of the air intake port, and the guide structure is used to guide the airflow entering from the air intake parts on both sides to enter the air intake pipe after being turned.

[0011] Optionally, the guide structure is in the shape of a raised peak, with arc-shaped guide surfaces on both sides.

[0012] Optionally, a filter screen is provided at the air inlet.

[0013] Optionally, snow and ice melting equipment is provided around the filter screen.

[0014] Optionally, an electric heating area is provided in the air intake passage of the air intake portion; and / or an air volume regulating mechanism is provided in the air intake passage of the air intake portion.

[0015] In order to achieve the other purpose mentioned above, the present invention provides a rail vehicle, including a car body and an air-conditioning unit arranged on the car body, and is provided with a ram air intake drainage structure as described in any of the above items, wherein the air intake part of the ram air intake drainage structure is embedded in the side of the car body, and the air intake pipe of the ram air intake drainage structure is connected to the condensation chamber of the air-conditioning unit.

[0016] Optionally, the condensation chamber of the air-conditioning unit is located below the ram air intake drainage structure on each side, a condenser and a condensation fan are provided in the condensation chamber, a condensation air outlet and an air outlet grille corresponding to the condensation fan are provided on the side of the condensation chamber; a fresh air inlet is provided on the partition between the evaporation chamber and the condensation chamber of the air-conditioning unit.

[0017] Optionally, an auxiliary air inlet and an air inlet grille are provided on the side of the condensation chamber.

[0018] Optionally, the condensing chamber of the air-conditioning unit is located between the ram air intake drainage structures on both sides, and the condensing chamber is connected to the return air chamber of the air-conditioning unit through a fresh air inlet. The return air chamber is provided with a return air port and is connected to the evaporation chamber.

[0019] The ram air intake diversion structure provided by the present invention is arranged on the side of the vehicle when in use. During the driving of the vehicle, the air outside the vehicle can enter the intake air flow channel through the air inlet, then enter the intake pipe from the intake air flow channel, and then be introduced into the air-conditioning unit from the intake pipe. It realizes the continuous introduction and regulation of fresh air when the vehicle is running at high speed, ultra-high speed, and low vacuum tunnel through a relatively simple structure, and can realize two-way air intake. Since it can be embedded in the vehicle body, it can effectively reduce aerodynamic resistance and noise while increasing the air intake volume. The air-conditioning unit matched with it can reduce the frequency of use of the condensing fan, save energy consumption, and effectively control the noise of the whole machine. In actual application, it can be flexibly arranged and installed according to the air demand of other equipment, solves the problem of fresh air supply and condensation heat dissipation difficulties of the vehicle under higher speed levels and low vacuum operating conditions, improves the air intake and cooling effect of the vehicle air-conditioning system, and meets the air demand of the vehicle.

[0020] The rail vehicle provided by the present invention is provided with the ram air intake drainage structure. Since the ram air intake drainage structure has the above-mentioned technical effects, the rail vehicle provided with the ram air intake drainage structure should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A front view of a ram air intake guide structure provided by an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A side view of the ram air intake guide structure shown;

[0023] Figure 3 A schematic diagram of the structure in which an air volume regulating mechanism is provided in the air intake passage of the ram air intake guide structure and the air volume regulating mechanism is in a closed state;

[0024] Figure 4 A schematic diagram of the structure in which an air volume regulating mechanism is provided in the air intake passage of the ram air intake guide structure and the air volume regulating mechanism is in an open state;

[0025] Figure 5 A schematic structural diagram of an air conditioning unit for a rail vehicle provided by an embodiment of the present invention;

[0026] Figure 6 for Figure 5 a side view of the air conditioning unit shown;

[0027] Figure 7 A schematic structural diagram of another air conditioning unit for a rail vehicle provided by an embodiment of the present invention;

[0028] Figure 8 for Figure 7 AA view of the air conditioning unit shown.

[0029] In the figure:

[0030] 10. Air intake part 101. Air intake side 102. Air intake front edge 103. Air intake bottom 104. Air intake 105. Electric heating area 20. Air intake pipe 30. Air intake upper cover 40. Flow guide structure 51. Telescopic cylinder 52. Air volume adjustment plate 60. Filter 70. Car body 71. Condensation chamber 72. Condenser 73. Condensation fan 74. Condensation air outlet 75. Air outlet grille 76. Evaporation chamber 77. Fresh air inlet 78. Auxiliary air inlet 79. Air inlet grille 710. Return air chamber 711. Return air outlet 720. Electric heater 730. Evaporator 740. Evaporation fan DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0033] Please refer to Figure 1 , Figure 2 , Figure 1 A front view of a ram air intake guide structure provided by an embodiment of the present invention; Figure 2 for Figure 1 A side view of the ram air intake guide structure shown.

[0034] In a specific embodiment, the ram air intake drainage structure provided by the present invention is mainly composed of an air intake pipe 20 located in the middle of the bottom and two air intake parts 10. The two air intake parts 10 are symmetrically arranged in the front and rear directions with the air intake pipe 20 as the center to form a bidirectional air intake part.

[0035] When in use, the ram air intake guide structure is embedded in the side of the vehicle body. When the vehicle is traveling forward, air can be taken in from one of the air intake positions 10. When the vehicle is traveling in reverse, air can be taken in from the other air intake position 10, thereby meeting the air intake needs of the vehicle in both directions.

[0036] Specifically, each air intake portion 10 has an air intake side edge 101, an air intake front edge 102 and an air intake bottom surface 103 for forming an air intake flow passage, an air intake 104 is formed between the air intake side edges 101, and the air intake 104 is connected to the air intake pipe 20 via the air intake flow passage; the air intake side edge 101 is streamlined, and its cross section is gradually expanded, and the air intake side edge 101 gradually widens from the air intake front edge 102 to the direction where the air intake pipe 20 is located. The air inlet 104 is generally flat, and the opening is generally located in the same plane so as to be flush with the surface of the vehicle body. The bottom surface 103 of the air inlet is bent or arc-shaped, extending from the front edge 102 of the air inlet to the air inlet pipe 20. The depth from the air inlet 104 to the bottom surface 103 of the air inlet gradually increases from the front edge 102 of the air inlet to the direction where the air inlet pipe 20 is located, and the width of the air inlet 104 itself also increases from the front edge 102 of the air inlet to the direction where the air inlet pipe 20 is located. When observed from the air inlet direction, the entire air inlet part is generally in a shuttle shape with pointed ends and a thick middle.

[0037] The air inlet 104 is divided into a first air inlet section a and a second air inlet section b from the air inlet front edge 102 to the direction where the air inlet pipe 20 is located, wherein the width of the first air inlet section a is narrow and equal, and the width of the second air inlet section b gradually widens from the tail of the first air inlet section a. In this way, when the vehicle is running, the outside air can be introduced from the air inlet 104.

[0038] An upper air inlet cover plate 30 located in the middle is provided between the two air inlet parts 10 of the same ram air inlet guide structure, and a guide structure 40 corresponding to the central position of the air inlet pipe 20 is provided below the upper air inlet cover plate 30. The guide structure 40 is used to guide the airflow entering from the air inlet parts 10 on both sides to enter the air inlet pipe 20 after being turned. The cross-section of the air inlet pipe 20 is rectangular and has a tendency to expand along the air inlet direction. While playing an air guiding role, it also has a certain sound-absorbing effect.

[0039] In this embodiment, the guide structure 40 is in the shape of a raised peak, and its two sides are arc-shaped guide surfaces. The airflow entering from the air intake portion 10 on both sides can smoothly make a 90° turn under the guidance of the arc-shaped guide surfaces and then enter the air intake pipe 20.

[0040] A filter 60 may be provided at the air inlet 104 for preliminary filtering of the gas entering from the outside, and snow and ice melting equipment may be installed around the filter 60, or an electric heating area 105 may be provided in the air inlet flow passage to prevent ice and snow from gathering and condensing at the air inlet.

[0041] Please refer to Figure 3 , Figure 4 , Figure 3A schematic diagram of the structure in which an air volume regulating mechanism is provided in the air intake passage of the ram air intake guide structure and the air volume regulating mechanism is in a closed state; Figure 4 This is a structural schematic diagram of a ram air intake guide structure in which an air volume regulating mechanism is provided in the air intake passage and the air volume regulating mechanism is in an open state.

[0042] In other embodiments, an air volume regulating mechanism may be further provided in the air intake passage of the air intake portion 10 .

[0043] This air volume adjustment mechanism can be composed of a telescopic cylinder 51 and an air volume adjustment plate 52. One end of the air volume adjustment plate 52 is hinged to the bottom surface 103 of the air inlet through a rotating shaft. The telescopic cylinder 51 can be a hydraulic cylinder or a pneumatic cylinder. Its piston rod passes through the bottom surface 103 of the air inlet and extends into the interior of the inlet air duct, and is hinged to the air volume adjustment plate 52 at a position close to the other end.

[0044] When the telescopic cylinder 51 is extended, the air volume adjustment plate 52 can be driven to lift upward, thereby narrowing the air intake passage and reducing the air intake volume; when the telescopic cylinder 51 is shortened, the air volume adjustment plate 52 can be driven to return downward, thereby widening the air intake passage and increasing the air intake volume.

[0045] By controlling the extension and contraction amount of the telescopic cylinder 51, the air intake amount can be accurately controlled so that the actual air intake amount matches the required air intake amount, thereby avoiding the phenomenon of excessive or insufficient air intake amount.

[0046] Please refer to Figure 5 , Figure 6 , Figure 5 A schematic structural diagram of an air conditioning unit for a rail vehicle provided by an embodiment of the present invention; Figure 6 for Figure 5 Side view of the air conditioning unit shown.

[0047] In addition to the above-mentioned ram air intake drainage structure, the present invention also provides a rail vehicle, which has a car body 70 and an air-conditioning unit arranged on the car body, and is provided with the ram air intake drainage structure described above. The ram air intake drainage structure is installed on the car body 70 in a left-right symmetrical manner, and its air intake part 10 is embedded in the upper left corner area and the upper right corner area of ​​the side of the car body 70. The air intake of the air intake part 10 faces the upper left or upper right, and the air intake 104 remains flush with the surface of the car body 70 in the front and rear directions. The air intake pipe 20 of the ram air intake drainage structure has a certain curvature and is connected to the condensation chamber 71 of the air-conditioning unit.

[0048] In this embodiment, the condensing chamber 71 of the air-conditioning unit is located below the ram air intake drainage structure on each side. The air intake pipe 20 of the ram air intake drainage structure is bent downward and connected to the condensing chamber 71 from the top. A condenser 72 and a condensing fan 73 are provided in the condensing chamber 71. A condensing air outlet 74 and an air outlet grille 75 corresponding to the condensing fan 73 are provided on the side of the condensing chamber 71. A fresh air inlet 77 is provided on the partition between the evaporation chamber 76 of the air-conditioning unit and the condensing chamber 71. An auxiliary air inlet 78 and an air inlet grille 79 are provided on the side of the condensing chamber 71.

[0049] When the vehicle is driving, the air introduced through the air inlet 104 enters the condensation chamber 71 of the air-conditioning unit through the air inlet pipe 20, most of the air flows through the air-conditioning condenser 72 for heat exchange, and the air after heat exchange is discharged out of the vehicle through the air outlet grille 75; a small part of the air enters the evaporation chamber 76 through the fresh air inlet 77 located at the partition between the air-conditioning condensation chamber 71 and the evaporation chamber 76. A filter with a higher filtration level and a pressure fluctuation protection device can be set at the fresh air inlet 77. This part of fresh air is mixed with the return air of the air-conditioning and participates in the air circulation inside the vehicle.

[0050] Since the air intake volume of this type of air intake is positively correlated with the vehicle's running speed, when the vehicle is running at a low speed or stationary, in order to ensure the air consumption of the air-conditioning unit, an auxiliary air intake port 78 is set on the side of the air conditioner. The auxiliary air intake port 78 is provided with an opening and closing mechanism, which is opened when the vehicle is running at a low speed to increase the air intake volume of the whole machine, and is closed when the vehicle is running at a high speed to reduce the noise of the unit's condensing chamber.

[0051] In addition, the condensing fan 73 arranged in the condensing chamber 71 can adjust the speed and start and stop according to the actual air intake volume; at the same time, in order to improve the air outlet direction and overall aesthetics of the air-conditioning condensing chamber 71 when the vehicle enters the platform area, an outlet grille 75 with an adjustable angle is provided at the condensing air outlet 74.

[0052] Please refer to Figure 7 , Figure 8 , Figure 7 A schematic structural diagram of another air conditioning unit for a rail vehicle provided by an embodiment of the present invention; Figure 8 for Figure 7 AA view of the air conditioning unit shown.

[0053] In this embodiment, the condensing chamber 71 of the air-conditioning unit is located at the central position of the top of the vehicle body, and the left and right ram air intake drainage structures are respectively located on both sides of the condensing chamber 71. The air intake pipes 20 of the two ram air intake drainage structures are bent inward and connected with the condensing chamber 71 from the side. The condensing chamber 71 is connected with the return air chamber 710 of the air-conditioning unit through the fresh air inlet 77. The front side of the return air chamber 710 is the evaporation chamber 76. The interior of the evaporation chamber 76 is provided with an electric heater 720, an evaporator 730 and an evaporation fan 740. The return air chamber 710 is provided with a return air port 711. The fresh air entering the return air chamber 710 from the condensing chamber 71 is mixed with the air-conditioning return air and then enters the evaporation chamber 76, and is further sent into the vehicle by the evaporation fan 740 to participate in the air circulation inside the vehicle.

[0054] The same parts of this embodiment as those of the above-mentioned embodiments are given the same figure marks, and the same textual descriptions are omitted.

[0055] The above embodiments are only preferred solutions of the present invention and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation methods. For example, the air volume adjustment structure can also be arranged in the air conditioning unit, or the air volume adjustment mechanism can be designed in other forms, etc. Since there are many possible implementation methods, they will not be described one by one here.

[0056] The ram air intake guide structure is arranged on the side of the vehicle when in use. When the vehicle is driving, the outside air can enter the intake air passage through the air inlet 104, then enter the intake pipe 20 from the intake air passage, and then be introduced into the air conditioning unit from the intake pipe 20, thereby improving the air intake and cooling effect of the vehicle air conditioning system and meeting the air demand of the vehicle. It has the following advantages:

[0057] 1) With a relatively simple structure, fresh air can be introduced and regulated when the vehicle is running at high speed, ultra-high speed, or in a low vacuum tunnel;

[0058] 2) The ram air intake guide structure can realize two-way air intake when the vehicle is driving forward and reverse;

[0059] 3) Due to the embedded installation structure, the air intake can be increased while effectively reducing aerodynamic resistance and noise;

[0060] 4) It can be flexibly arranged and installed according to the air demand of other equipment;

[0061] 5) The matching air-conditioning unit can reduce the frequency of use of the condensing fan, saving energy while achieving effective control of the overall machine noise.

[0062] The above is a detailed introduction to the ram air intake guide structure and rail vehicle provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A ram air intake drainage structure, characterized in that: It comprises an air intake pipe (20) located at the middle position of the bottom and a bidirectional air intake portion (10) symmetrically arranged in the front-to-back direction with the air intake pipe (20) as the center, each of the air intake portions (10) respectively comprising an air intake side edge (101) for forming an air intake flow passage, an air intake front edge (102) and an air intake bottom surface (103), an air intake (104) is formed between the air intake side edges (101), and the air intake (104) is connected to the air intake pipe (20) via the air intake flow passage; The side edge (101) of the air inlet is in a gradually expanding shape in cross section, and the side edge (101) of the air inlet gradually widens from the front edge (102) of the air inlet to the direction where the air inlet pipe (20) is located, the depth from the air inlet (104) to the bottom surface (103) of the air inlet gradually deepens from the front edge (102) of the air inlet to the direction where the air inlet pipe (20) is located, and the width of the air inlet (104) widens from the front edge (102) of the air inlet to the direction where the air inlet pipe (102) is located.

2. The ram air intake guide structure according to claim 1, characterized in that: The air inlet (104) comprises a first air inlet section and a second air inlet section from the air inlet front edge (102) toward the direction where the air inlet pipe (20) is located, the first air inlet section has the same width, and the second air inlet section has a gradually increasing width.

3. The ram air intake guide structure according to claim 2, characterized in that: An air inlet upper cover plate (30) located in the middle is provided between the air inlet parts (10).

4. The ram air intake guide structure according to claim 3, characterized in that: A flow guide structure (40) corresponding to the central position of the air intake pipe (20) is provided below the air intake upper cover plate (30), and the flow guide structure (40) is used to guide the airflow entering from the air intake parts (10) on both sides to enter the air intake pipe (20) after being diverted.

5. The ram air intake guide structure according to claim 4, characterized in that: The flow-guiding structure (40) is in the shape of a raised peak, and its two sides are arc-shaped flow-guiding surfaces.

6. The ram air intake guide structure according to claim 5, characterized in that: A filter screen is arranged at the air inlet.

7. The ram air intake guide structure according to claim 6, characterized in that: Snow and ice melting equipment is arranged around the filter screen.

8. The ram air intake guide structure according to any one of claims 1 to 7, characterized in that: An electric heating area is provided in the air intake passage of the air intake portion (10); and / or an air volume regulating mechanism is provided in the air intake passage of the air intake portion (10).

9. A rail vehicle, comprising a vehicle body and an air conditioning unit arranged on the vehicle body, characterized in that: A ram air intake drainage structure as described in any one of claims 1 to 8 is provided, wherein the air intake portion of the ram air intake drainage structure is embedded in the side of the vehicle body (70), and the air intake pipe (20) of the ram air intake drainage structure is connected to the condensation chamber (71) of the air conditioning unit.

10. The rail vehicle according to claim 9, characterized in that The condensation chamber (71) of the air conditioning unit is located below the ram air intake drainage structure on each side, a condenser (72) and a condensation fan (73) are provided in the condensation chamber (71), and a condensation air outlet (74) and an air outlet grille (75) corresponding to the condensation fan (73) are provided on the side of the condensation chamber (71); a fresh air inlet (77) is provided on the partition between the evaporation chamber (76) of the air conditioning unit and the condensation chamber (71).

11. The rail vehicle according to claim 10, characterized in that An auxiliary air inlet (78) and an air inlet grille (79) are provided on the side of the condensation chamber (71).

12. The rail vehicle according to claim 9, characterized in that The condensing chamber (71) of the air conditioning unit is located between the ram air intake drainage structures on both sides, and the condensing chamber (71) is connected to the return air chamber (710) of the air conditioning unit through a fresh air inlet (77); the return air chamber (710) is provided with a return air outlet (711) and is connected to the evaporation chamber (76).

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