A driver's cabin air conditioning unit, a driver's cabin and a railway vehicle

Abstract

The application provides a driver's room air conditioning unit, a driver's room and a rail vehicle. An evaporation chamber is integrated in a casing. The casing is also provided with a supply air assembly, a return air outlet and a fresh air outlet. One end of the supply air assembly and the return air outlet is communicated with the evaporation chamber, and the other end is communicated with the inside of the driver's room. The driver's room inside is supplied with air without an additional separate air supply channel casing. Meanwhile, the bottom wall of the casing corresponding to the outside of the supply air assembly is concave, and a return air chamber is formed opposite to the driver's room vehicle body, so as to communicate the cavity between the built-in roof and the driver's room vehicle body, effectively increase the return air area and improve the return air effect. Secondly, the supply air assembly and the return air outlet are integrated at the bottom of the casing, the air conditioning unit mechanism is optimized, the overall machine size is reduced, the overall machine weight is reduced, and the weight of the rail vehicle is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail vehicles, in particular to a cab air conditioning unit, a cab and a rail vehicle. BACKGROUND

[0002] New energy digital trackless trains have become the first choice for urban transportation construction in recent years due to their large passenger capacity, low line laying cost, environmental protection and no pollution. New energy digital trackless trains play an important role in relieving urban traffic pressure, improving urban image and air quality.

[0003] A cab air conditioning unit of a domestic subway project, the cab air conditioning unit of the project is a 4.5kW unit, the ventilation volume is 600m 3 / h, the fresh air volume is 30m 3 / h, the weight is 250kg, the outer dimension is 1500x1200x350mm, the air supply mode is end supply and end return, and an air supply duct and an air return duct need to be arranged at the end of the cab. The cab air conditioning unit supplies air to the inside of the cab through the cab air duct, and the air supply system structure is complex, the air supply duct installation needs a large installation space, and more components are added, increasing the weight of the vehicle body. SUMMARY

[0004] The cab air conditioning unit, the cab and the rail vehicle provided in the embodiments of the present application solve the problems of complex air supply structure of the existing cab air conditioning unit, additional separate air supply duct, large installation space and increased weight of the vehicle body.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A cab air conditioning unit, comprising a casing, wherein an evaporation chamber is integrated inside the casing, and an evaporator and a heater are arranged in the evaporation chamber;

[0007] The casing has an air supply assembly, an air return port and a fresh air port, and the air supply assembly is located at the bottom wall of the casing;

[0008] The bottom wall of the casing corresponding to the outer side of the air supply assembly is recessed, and a return air chamber is formed opposite to the cab body, one end of the return air chamber is used for communicating with the cavity between the built-in ceiling and the cab body, and the other end communicates with the air return port;

[0009] The air return port is located at the bottom wall of the casing, and one end of the air supply assembly and the air return port both communicate with the evaporation chamber, and the other end both communicates with the inside of the cab;

[0010] The fresh air port communicates with the outside of the rail vehicle.

[0011] Optionally, the air supply component includes:

[0012] An air supply housing, a top plate air supply opening is provided at the bottom of the air supply housing, and driver's console air supply openings are respectively provided on a group of side walls of the air supply housing that are oppositely arranged along the transverse direction of the rail vehicle. The driver's console air supply openings supply air to the front window of the driver's console through flexible air ducts.

[0013] Optionally, the air supply component further includes:

[0014] A first deflector plate and a second deflector plate, both located inside the air supply housing. The tops of the first deflector plate and the second deflector plate are respectively opposite to the bottom openings of the evaporation chamber, and a gap is provided between the first deflector plate and the second deflector plate along the transverse direction to form a middle deflector air duct. The air body is sent to the top plate air supply opening through the middle deflector air duct;

[0015] The air bodies on both sides are respectively sent to the driver's console air supply openings on both sides through the first deflector plate and the second deflector plate.

[0016] Optionally, both the first deflector plate and the second deflector plate are arc-shaped deflector plates.

[0017] Optionally, the air supply component further includes:

[0018] A porous flow dividing plate, located at the bottom of the air supply housing, at the top plate air supply opening, and is oppositely arranged with the middle deflector air duct; a number of flow dividing holes arranged in a matrix are provided on the porous flow dividing plate.

[0019] Optionally, a sealing member is provided at the circumferential edge of the bottom wall of the air supply housing, and is pressed against the interior ceiling through the sealing member. [[ID=2,6]]

[0020] Optionally, the arc-shaped deflector plate includes:

[0021] An integrally arranged arc-shaped deflector part and a planar deflector part. One end of the planar deflector part is connected to the bottom end of the arc-shaped deflector part, and the other end of the planar deflector part is lower than or flush with the bottom wall of the driver's console air supply opening. [[ID=S31]]

[0022] Optionally, the return air chamber is in a "hui" - shaped structure or a "U" - shaped structure.

[0023] This application also provides a driver's cab, including an interior ceiling, a driver's cab body, and the driver's cab air conditioner unit according to any one of the above embodiments;

[0024] The interior ceiling is located above the driver's cab body, an adjustable air outlet is provided at the top of the driver's cab body, and the air supply component of the driver's cab air conditioner unit is communicated with the adjustable air outlet;

[0025] The bottom wall of the air conditioning unit casing in the driver's cab is opposite to the interior ceiling panel, and the return air chamber is opposite to the driver's cab body, so as to connect the cavity between the interior ceiling panel and the driver's cab body.

[0026] This application also provides a rail vehicle including the driver's cab described in the above embodiments.

[0027] Compared with the prior art, the driver's cab air conditioning unit, driver's cab, and rail vehicle provided in this application embodiment have the following technical advantages:

[0028] An evaporation chamber is integrated within the casing, which also includes an air supply assembly, a return air inlet, and a fresh air inlet. One end of the air supply assembly and the return air inlet are connected to the evaporation chamber, while the other end is connected to the interior of the driver's cab. This eliminates the need for a separate air supply duct within the casing to supply air to the driver's cab. Simultaneously, the outer side of the air supply assembly is recessed into the bottom wall of the casing, forming a return air chamber opposite the driver's cab body. This allows for communication between the interior ceiling and the driver's cab body, effectively increasing the return air area and improving the return air effect. Furthermore, integrating the air supply assembly and the return air inlet at the bottom of the casing optimizes the air conditioning unit's structure, reduces the overall size and weight, and further lightens the weight of the rail vehicle. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 A schematic diagram of the structure of a driver's cab air conditioning unit provided in this application embodiment;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0032] Figure 3 for Figure 1 A schematic diagram of the side view structure;

[0033] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure;

[0034] Figure 5 A half-sectional view of the driver's cab air conditioning unit provided in an embodiment of this application;

[0035] Figure 6 This is an axonometric structural diagram of the driver's cab provided in an embodiment of this application;

[0036] Figure 7 This is a schematic diagram showing the installation position of the adjustable air vent and the driver's cab, provided for an embodiment of this application.

[0037] The reference signs in the drawings are as follows:

[0038] Casing 1, Evaporation chamber 2, Evaporator 3, Heater 4, Air supply assembly 5, Return air inlet 6, Fresh air inlet 7, Return air chamber 8;

[0039] Air supply shell 51, Top plate air supply inlet 52, Driver table air supply inlet 53, First flow guide plate 54, Second flow guide plate 55, Middle flow guide air duct 56, Porous flow distribution plate 57;

[0040] Arc-shaped flow guide part 541, Planar flow guide part 542;

[0041] Driver cabin air conditioning unit 100, Driver cabin 200;

[0042] Built-in top plate 21, Driver cabin vehicle body 22, Adjustable air inlet 23, Soft air duct 24. DETAILED DESCRIPTION

[0043] The driver cabin air conditioning unit, the driver cabin and the rail vehicle disclosed by the embodiments of the present application solve the problems of the complex air supply structure of the existing driver cabin air conditioning unit, the need for an additional separate air supply duct, the need for a larger installation space and the increase in the weight of the vehicle body.

[0044] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0045] Please refer to Figures 1-5 , Figure 1 The structure schematic view of the driver cabin air conditioning unit provided by the embodiments of the present application is shown in FIG. 1. Figure 2 The bottom structure schematic view of the driver cabin air conditioning unit is shown in FIG. 2. Figure 1 The side structure schematic view of the driver cabin air conditioning unit is shown in FIG. 3. Figure 3 The cross-sectional structure schematic view of the driver cabin air conditioning unit is shown in FIG. 4. Figure 1 The half cross-sectional view of the driver cabin air conditioning unit provided by the embodiments of the present application is shown in FIG. 5. Figure 4 The half cross-sectional view of the driver cabin air conditioning unit provided by the embodiments of the present application is shown in FIG. 5. Figure 1 The half cross-sectional view of the driver cabin air conditioning unit provided by the embodiments of the present application is shown in FIG. 5. Figure 5 The half cross-sectional view of the driver cabin air conditioning unit provided by the embodiments of the present application is shown in FIG. 5.

[0046] In a specific embodiment, the driver cabin air conditioning unit 100 provided by the present application comprises a casing 1, and the casing 1 is internally integrated with an evaporation chamber 2, and the evaporation chamber 2 is provided with an evaporator 3 and a heater 4;

[0047] The casing 1 is provided with an air supply assembly 5, a return air inlet 6 and a fresh air inlet 7, and the air supply assembly 5 is located at the bottom wall of the casing;

[0048] The outer side of the air supply assembly 5 corresponds to the recessed bottom wall of the shell 1 and is opposite the cab body 22, forming an air return chamber 8. One end of the air return chamber 8 is used to communicate with the cavity between the built-in roof 21 and the cab body 22, and the other end is communicated with the air return port 6;

[0049] The air return port 6 is located on the bottom wall of the shell. One end of the air supply assembly 5 and the air return port 6 is communicated with the evaporation chamber 2, and the other end is communicated with the inside of the cab 200.

[0050] The fresh air port 7 is communicated with the outside of the rail vehicle.

[0051] The shell 1 is provided with an air conditioning unit, which includes a compressor, a condenser, an evaporator 3 and a heater 4. The compressor, the condenser and the evaporator 3 form a refrigerant circulation loop, and the heater 4 is arranged in the communication air duct between the air return port 6 and the air supply port. When the air conditioning unit is in a heating state, the heater 4 can heat the air. The specific structure and connection relationship of the air conditioning unit can be set according to the prior art, which will not be described here.

[0052] The air supply assembly 5 and the air return port 6 are both located on the bottom wall of the shell, so as to be directly opposite the cab body 22 and communicated with the inside of the cab 200. Thus, the air supply and air return of the cab air conditioning unit 100 do not need to be additionally provided with a separate air duct, the structure of the cab air conditioning unit 100 is optimized, the outer size and weight of the cab air conditioning unit 100 are reduced without reducing the air conditioning refrigerating capacity and the ventilation capacity, and the lightweight demand of the rail vehicle is met.

[0053] Specifically, the outer side of the air supply assembly 5 corresponds to the recessed bottom wall of the shell 1. Here, “in” refers to the direction close to the center line of the shell 1. Preferably, the bottom wall of the shell 1 is recessed upward by a predetermined distance, such as 3-8 cm in the vertical direction. The bottom wall of the shell 1 and the recessed bottom wall are preferably in a stepped structure. In actual installation, the bottom wall of the shell 1 abuts against the built-in roof 21. The built-in roof 21 is provided with a sunken guide cylinder for installing the air supply assembly 5. The air return chamber 8 is communicated with the cavity between the built-in roof 21 and the cab body 22. The other end of the air return chamber 8 is communicated with the air return port 6. The air flow passes through the air return grille at the position of the electrical cabinet inside the cab 200, flows back through the gap between the built-in roof 21 and the cab body 22 to the cab air conditioning unit 100, and realizes the air circulation inside the cab 200.

[0054] Further, one end of the air return port 6 is communicated with the evaporation chamber 2, and the other end is communicated with the inside of the cab 200. The air flow flows back to the evaporation chamber 2 through the inside of the cab 200, thereby being communicated with the cab 200 through the air return chamber 8 and the air return port 6 respectively, increasing the air return area and improving the air return effect.

[0055] The fresh air outlet 7 is in communication with the outside of the rail vehicle, and is used to supplement the air volume to the cab air conditioning unit 100 from the outside. The fresh air filter screen is arranged at the fresh air outlet 7, so as to filter the impurities and dust in the fresh air and improve the air purification effect.

[0056] In a specific embodiment, the cabinet 1 is a cuboid structure, the air supply assembly 5 is located in the middle of the bottom wall of the cabinet 1, the air return outlet 6 is located at the longitudinal end of the cabinet 1, the longitudinal direction of the cabinet 1 is parallel to the transverse direction of the rail vehicle, and the fresh air outlet 7 and the air return outlet 6 are located at the same longitudinal end of the cabinet 1, so that the mixed air flow of the return air and the fresh air returns to the evaporation chamber 2. The above structure further optimizes the structure of the cab air conditioning unit 100 and improves the space utilization.

[0057] Compared with the prior art, the cab air conditioning unit 100, the cab 200 and the rail vehicle provided in the embodiments have the following technical effects:

[0058] The evaporation chamber 2 is integrated in the cabinet 1, the cabinet 1 is further provided with the air supply assembly 5, the air return outlet 6 and the fresh air outlet 7, one end of the air supply assembly 5 and the air return outlet 6 is in communication with the evaporation chamber 2, and the other end is in communication with the inside of the cab 200. It does not need to additionally set a separate air supply channel to realize the air supply of the inside of the cab 200. At the same time, the bottom wall of the cabinet 1 corresponding to the outer side of the air supply assembly 5 is concave, and forms the air return chamber 8 with the cab body 22 opposite to it, so as to be able to communicate with the cavity between the interior top plate 21 and the cab body 22, effectively increase the air return area and improve the air return effect. Secondly, the air supply assembly 5 and the air return outlet 6 are integrated at the bottom of the cabinet 1, which optimizes the air conditioning unit mechanism, reduces the size of the whole machine, reduces the weight of the whole machine, and further reduces the weight of the rail vehicle.

[0059] In this embodiment, the air supply assembly 5 includes an air supply shell 51, the bottom of the air supply shell 51 is provided with a top plate air supply outlet 52, the air supply shell 51 has a hollow cavity, the air supply shell 51 is a top opening structure, it is directly fixed with the bottom wall of the cabinet 1, and the hollow cavity of the air supply shell 51 is in communication with the evaporation chamber 2. The bottom of the air supply shell 51 is provided with a top plate air supply outlet 52, one end of the top plate air supply outlet 52 is in communication with the hollow cavity of the air supply shell 51, and the other end is in communication with the inside of the cab 200, so as to directly deliver the airflow in the evaporation chamber 2 to the inside of the cab 200 below. The adjustable air outlet 23 is preferably arranged on the interior top plate 21 of the cab 200, the adjustable air outlet 23 is circular, and preferably four; it can realize the adjustment of various directions and various air volumes, and meet the air supply demand in the cab 200.

[0060] The air supply housing 51 has a set of side walls arranged laterally opposite each other along the rail vehicle, each equipped with a driver's cab air supply outlet 53. The driver's cab air supply outlet 53 supplies air to the driver's cab front window via a flexible air duct 24, thereby reducing the high temperature generated by solar radiation from the front window. In rainy or cold weather, it can also effectively defrost and defog the front window, improving driver comfort and safety. Preferably, the driver's cab air supply outlet 53 is preferably configured as an elongated oval hole to increase the airflow velocity as it passes through the outlet 53, ensuring sufficient airflow to the driver's cab front window.

[0061] Specifically, the air supply assembly 5 also includes a first guide plate 54 and a second guide plate 55. It can be understood that the first guide plate 54 and the second guide plate 55 are both located inside the air supply housing 51. The top of the first guide plate 54 and the top of the second guide plate 55 are respectively opposite to the bottom opening of the evaporation chamber 2. The first guide plate 54 and the second guide plate 55 are separated laterally to form a central air supply duct 56. Here, the lateral direction is still based on the lateral direction of the rail vehicle. The air is sent downward to the top plate air outlet 52 through the central air supply duct 56. The air on both sides is sent to the driver's cab air outlets 53 on both sides through the first guide plate 54 and the second guide plate 55, so as to distribute the total air supply volume of the evaporation chamber 2 through the first guide plate 54 and the second guide plate 55.

[0062] The specific air supply process is as follows: the airflow in the evaporation chamber 2 is diverted into the air supply housing 51 through the gap formed by the side wall of the evaporation chamber and the first guide plate 54 and the second guide plate 55. Part of the airflow moves along the first guide plate 54 and the second guide plate 55 along the lateral direction of the rail vehicle to the corresponding driver's cab air supply port 53, and is sent to the driver's cab front window from the flexible air duct 24; another part of the airflow flows downward to the top plate air supply port 52 through the middle guide air duct 56 between the first guide plate 54 and the second guide plate 55.

[0063] Furthermore, both the first guide plate 54 and the second guide plate 55 are arc-shaped guide plates, forming a "V"-shaped structure within the air supply housing 51. The center of the arc-shaped guide plate is located vertically above the arc-shaped guide plate, allowing the airflow to smoothly transition to the driver's console air outlet 53, reducing kinetic energy loss. Even further, the arc-shaped guide plate includes an integrally formed arc-shaped guide section 541 and a planar guide section 542. The top of the arc-shaped guide section 541 faces the bottom opening of the evaporation chamber 2, one end of the planar guide section 542 is connected to the bottom end of the arc-shaped guide section 541, and the other end of the planar guide section 542 is lower than or flush with the bottom wall of the driver's console air outlet 53, allowing the airflow to completely pass through the driver's console air outlet 53, reducing obstruction during airflow transmission.

[0064] In another embodiment, the air supply component 5 further includes a porous flow dividing plate 57, which is located at the bottom of the air supply housing 51 and at the top plate air supply outlet 52, and is disposed opposite to the middle guide air duct 56; a plurality of flow dividing holes arranged in a matrix are formed on the porous flow dividing plate 57.

[0065] The porous flow dividing plate 57 is located at the bottom of the air supply housing 51, and can be fixed to the air supply housing 51 by snap connection. Specifically, stoppers are provided on the circumferential inner wall of the air supply housing 51, and the porous flow dividing plate 57 is installed by overlapping on the stoppers from top to bottom. The porous flow dividing plate 57 is disposed opposite to the middle guide air duct 56 to disturb the air flow of the top plate air supply, improve the air supply speed of the interior installation top plate 21, make the air flow送出均匀, and improve the air supply feeling of the driver. A plurality of flow dividing holes are provided on the porous flow dividing plate 57. The flow dividing holes are preferably arranged in a matrix on the porous flow dividing plate 57. In other embodiments, they can also be arranged in a radial pattern, and the arrangement mode of the flow dividing holes can be set according to needs.

[0066] Further, in order to install the air supply housing 51 and the interior installation top plate 21, a sealing member is provided on the circumferential edge of the bottom wall of the air supply housing 51, and the sealing member is pressed against the interior installation top plate 21 to achieve the sealing between the cab air conditioner unit 100 and the cab 200. The sealing member is preferably set as sealing cotton, and the sealing cotton is adhesively fixed to the circumferential edge of the bottom wall of the air supply housing 51.

[0067] Based on the above embodiments, the return air chamber 8 is in a "return" - shaped structure or a "U" - shaped structure. According to the installation position of the air supply component 5 on the bottom wall of the housing 1, the return air chamber 8 is set as the corresponding "return" - shaped structure or "U" - shaped structure, so as to further improve the integration degree of the return air chamber 8 and the air supply component 5 on the bottom wall. At the same time, the return air chamber 8 can return the air in the cavity between the interior installation top plate 21 and the cab body 22, increasing the return air area. The highly integrated "return" - shaped air supply opening and return air opening 6 have small installation space requirements, and there is no need to separately set up an air supply duct and a return air duct, further reducing the system weight.

[0068] The air supply opening of the above cab air conditioner unit 100 is directly pressed against the position of the interior installation top plate 21, without the need to separately set up an air supply duct. Its installation space is flexible, effectively reducing the manufacturing cost and installation cost of the air duct, and at the same time reducing the weight brought by the air supply duct, meeting the vehicle lightweight requirements; the setting of the first guide plate 54 and the second guide plate 55 can reasonably distribute the air volume from the source, improving the air supply uniformity in the cab 200; a part of the air is sent into the interior of the cab 200 through the cab top plate position, and another part of the air is distributed to the two - side flexible air ducts 24, connecting the air supply openings at the driver's console position to supply air to the front window position of the cab 200, not only reducing the high temperature generated by the solar radiation of the front window, but also effectively defrosting and demisting the front window in rainy, cold weather, improving the driving comfort and safety of the driver. <​In a specific embodiment, the cab air conditioning unit 100 has an outer dimension of only 1300X450X540mm, a weight of no more than 130kg, a refrigeration power of 4.5kW, and an air supply of 700m 3 / h, and a fresh air volume of 30m 3 / h, and a fresh air volume of 30m / h, and a fresh air volume of 30m

[0070] As Figures 6-7 shown, Figure 6 a cab 200 provided by the embodiment of the present application is shown in an axonometric structural schematic diagram; Figure 7 a mounting position diagram of the adjustable air outlet 23 and the cab 200 provided by the embodiment of the present application is shown.

[0071] The present application also provides a cab 200, which comprises an interior roof 21, a cab body 22, and the cab air conditioning unit 100 of any one of the above embodiments.

[0072] The interior roof 21 is located above the cab body 22, the top of the cab body 22 is provided with an adjustable air outlet 23, and the air supply assembly 5 of the cab air conditioning unit 100 is in communication with the adjustable air outlet 23.

[0073] The bottom wall of the casing 1 of the cab air conditioning unit 100 is opposite to the interior roof 21, and the return air chamber 8 is opposite to the cab body 22, so as to communicate the cavity between the interior roof 21 and the cab body 22.

[0074] The present application also provides a railway vehicle, which comprises the cab described above, and the corresponding beneficial effects are described above.

[0075] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the changes and modifications falling within the scope of the present application.

[0076] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A cab air conditioning unit characterized by, It includes a casing, inside which an evaporation chamber is integrated, and an evaporator and a heater are provided in the evaporation chamber; The casing has a air supply component, a return air inlet and a fresh air inlet. The air supply component is located on the bottom wall of the casing; The bottom wall of the casing corresponding to the outside of the air supply component is concave and forms a return air chamber relative to the cab body. One end of the return air chamber is used to communicate with the cavity between the interior ceiling panel and the cab body, and the other end is communicated with the return air inlet; The return air inlet is located on the bottom wall of the casing. One end of the air supply component and the return air inlet are both communicated with the evaporation chamber, and the other end is both communicated with the inside of the cab; The fresh air inlet is communicated with the outside of the rail vehicle; The air supply component includes: An air supply housing, a roof air supply outlet is provided at the bottom of the air supply housing, and driver console air supply outlets are respectively provided on a group of side walls of the air supply housing arranged oppositely along the transverse direction of the rail vehicle. The driver console air supply outlets supply air to the front window of the driver console through a flexible air duct; The air supply component further includes: A first deflector and a second deflector, both located inside the air supply housing. The tops of the first deflector and the second deflector are respectively opposite to the bottom opening of the evaporation chamber, and an interval is provided between the first deflector and the second deflector along the transverse direction to form a middle deflector air duct. The air body is sent to the roof air supply outlet through the middle deflector air duct; The air bodies on both sides are respectively sent to the driver console air supply outlets on both sides through the first deflector and the second deflector.

2. The cab air conditioning unit according to claim 1, characterized by Both the first deflector and the second deflector are arc-shaped deflectors.

3. The cab air conditioning pack of claim 1, wherein The air supply component further includes: A porous flow dividing plate, located at the bottom of the air supply housing, at the roof air supply outlet, and is arranged opposite to the middle deflector air duct; a number of flow dividing holes arranged in a matrix are provided on the porous flow dividing plate.

4. The cab air conditioning unit of claim 1, wherein A sealing member is provided at the circumferential edge of the bottom wall of the air supply housing, and is pressed against the interior ceiling panel through the sealing member.

5. The cab air conditioning unit of claim 2, wherein The arc-shaped deflector includes: An integrally arranged arc-shaped deflector part and a flat deflector part. One end of the flat deflector part is connected to the bottom end of the arc-shaped deflector part, and the other end of the flat deflector part is lower than or flush with the bottom wall of the driver console air supply outlet.

6. The cab air conditioning pack of any one of claims 1 to 5, wherein, The return air chamber is in a "return" shape structure or a "U" shape structure.

7. A cab characterized in that It includes an interior ceiling panel, a cab body and the cab air conditioner unit according to any one of claims 1-6; The interior ceiling panel is located above the cab body. An adjustable air outlet is provided at the top of the cab body. The air supply component of the cab air conditioner unit is communicated with the adjustable air outlet through a flexible air duct; The bottom wall of the casing of the cab air conditioner unit is opposite to the interior ceiling panel, and the return air chamber is opposite to the cab body to communicate the cavity between the interior ceiling panel and the cab body.

8. A rail vehicle, characterized by It includes the cab according to claim 7.

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