Railway vehicle air conditioning unit integrating waste discharge

Abstract

The utility model relates to a railway vehicle air conditioning unit integrating waste discharge, which comprises a shell, an evaporation cavity and a condensation cavity are arranged in the shell, a total heat exchanger is mounted in the evaporation cavity, a fresh air inlet, a waste discharge inlet and a waste discharge outlet are arranged on the shell, and the waste discharge inlet is communicated with the condensation cavity. Fresh air and waste exhaust air respectively pass through the total heat exchanger and are subjected to heat exchange in the total heat exchanger, and a fresh air inlet cavity and a waste exhaust air inlet cavity on the air inlet side of the total heat exchanger are arranged up and down and are separated by a first partition plate. And a waste discharge air outlet cavity and a fresh air outlet cavity on the air outlet side of the total heat exchanger are arranged up and down and are separated by a second partition plate. The air conditioner not only can recover cold energy and heat energy in waste exhaust air and effectively avoid loss of a large amount of cold energy / heat energy in a vehicle, but also is simple and compact in structure and beneficial to reduction of the size and the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle air-conditioning systems, in particular to an exhaust-integrated rail vehicle air-conditioning unit. Background Art

[0002] Rail vehicle air conditioning requires a large amount of oxygen due to its large passenger capacity. Therefore, the proportion of fresh air in the total air supply is relatively large, generally between 20% and 40%. When the vehicle introduces fresh air, the same amount of air inside the vehicle is discharged from the vehicle body, which is called exhaust air. However, the temperature of the exhaust air is consistent with the temperature inside the vehicle. When the exhaust air is discharged, a large amount of cooling / heat will be lost in the vehicle.

[0003] A Chinese patent with patent number 202120027867.1 discloses a rail vehicle air-conditioning unit with integrated exhaust, including a compressor chamber, an evaporator chamber and an exhaust chamber. An exhaust fan is installed in the exhaust chamber, and an exhaust air inlet and an exhaust air outlet are provided on the shell of the exhaust chamber. The exhaust air outlet is provided on the top plate of the shell, and the exhaust fan is installed below the exhaust air outlet. A water retaining structure is installed around the exhaust fan in the exhaust chamber, and the water retaining structure isolates the area below the exhaust air outlet from the area of ​​the exhaust air inlet.

[0004] This integrated exhaust system for rail vehicles uses an exhaust plenum to collect exhaust air from the vehicle through the exhaust inlet at the bottom of the air conditioner. Exhaust fans at both ends of the unit then discharge the exhaust directly into the outside environment. This prevents the energy in the exhaust air from being reused, as the temperature inside the vehicle is lower than outside temperatures in the summer and higher than outside temperatures in the winter. This wastes cooling and heating capacity. Furthermore, untreated fresh air enters the air conditioner directly and mixes with the return air, increasing the fresh air load and reducing the unit's energy efficiency. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide an integrated exhaust rail vehicle air-conditioning unit that can recover cold and heat in exhaust air, effectively avoid large-scale loss of cold / heat in the vehicle, and has a simple and compact structure, which is conducive to reducing volume and reducing costs.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A rail vehicle air-conditioning unit with integrated exhaust and waste gas comprises a shell, an evaporation chamber and a condensation chamber in the shell, a total heat exchanger is installed in the evaporation chamber, a fresh air inlet, an exhaust inlet and an exhaust outlet are provided on the shell, the fresh air and exhaust air respectively pass through the total heat exchanger and perform heat exchange in the total heat exchanger, the fresh air inlet chamber and exhaust air inlet chamber on the air inlet side of the total heat exchanger are arranged up and down and separated by a first partition, and the exhaust air chamber and fresh air outlet chamber on the air outlet side of the total heat exchanger are arranged up and down and separated by a second partition.

[0008] Furthermore, the fresh air inlet is opened on the side panel of the shell, the exhaust inlet is opened on the bottom plate of the shell, the exhaust outlet is opened on the top plate of the shell, and the full heat exchanger is installed corresponding to the fresh air inlet and the exhaust inlet.

[0009] Furthermore, an exhaust fan is installed in the exhaust air cavity on the air outlet side of the total heat exchanger.

[0010] Furthermore, fresh air inlets are respectively opened on the symmetrical side panels of the shell, corresponding to the two full heat exchangers installed in the shell, and two exhaust inlets are opened on the bottom plate of the shell. After the fresh air and exhaust air are heat exchanged in the full heat exchanger, they respectively enter the fresh air outlet cavity and the exhaust air outlet cavity located between the two full heat exchangers and are then discharged respectively.

[0011] Furthermore, an exhaust fan is installed in the exhaust air cavity between the two full heat exchangers, and an exhaust outlet is opened on the top plate of the shell corresponding to the exhaust fan, and the exhaust air entering the two exhaust inlets is discharged from the exhaust outlet on the top.

[0012] Furthermore, the total heat exchanger is placed obliquely in the shell, and the outer shell is fixedly connected to the first partition plate, the second partition plate, the bottom plate of the shell, and the top plate of the shell.

[0013] Furthermore, one side of the first partition is connected to the connection between the bottom plate of the shell and the side plate with the fresh air inlet, the other side of the first partition is tilted upward and connected to the outer shell of the full heat exchanger, and the second partition is installed in the shell parallel to the bottom plate.

[0014] Furthermore, an evaporator is installed at one end of the fresh air outlet cavity, and the evaporator is extended along the width direction of the shell. A return air outlet is opened on the bottom plate of the shell on the air inlet side of the evaporator, and an air blower is installed on the air outlet side of the evaporator, and an air supply outlet is opened on the end plate and / or bottom plate of the shell corresponding to the air blower.

[0015] Furthermore, two evaporation chambers and one condensation chamber are provided in the shell, and the two evaporation chambers are provided on both sides of the condensation chamber.

[0016] In summary, the rail vehicle air conditioning unit with integrated exhaust and waste gas discharge provided by the present invention has the following advantages compared with the prior art:

[0017] (1) The utility model sets a total heat exchanger in the evaporation chamber, and the exhaust air and the fresh air are heat exchanged in the total heat exchanger. The exhaust air in the vehicle is used to process the fresh air, which solves the problem of reusing the exhaust air in the vehicle, reduces the fresh air load, and improves the energy efficiency of the air-conditioning unit.

[0018] (2) The fresh air inlet and the exhaust air inlet of the utility model are arranged in correspondence, and the fresh air inlet chamber and the exhaust air inlet chamber on the air inlet side of the full heat exchanger are arranged in an upper and lower manner, and the exhaust air outlet chamber and the fresh air outlet chamber on the air outlet side of the full heat exchanger are also arranged in an upper and lower manner. This is conducive to simplifying the structure of the air-conditioning unit, making the structure of the air-conditioning unit more compact, reducing the volume of the air-conditioning unit while ensuring the heat exchange effect, and reducing the cost.

[0019] (3) The air-conditioning unit is provided with two fresh air inlets, two exhaust inlets and one exhaust outlet in one evaporation chamber, and only one exhaust fan is provided in the exhaust air chamber. Under the premise of ensuring the fresh air volume and exhaust air volume, the structure of the evaporation chamber can be made simpler and more compact, the volume of the air-conditioning unit can be reduced, and the cost of the air-conditioning unit can be greatly reduced.

[0020] (4) In the air-conditioning unit, the first partition for separating the fresh air inlet chamber and the exhaust air inlet chamber is tilted upward, which is not only conducive to ensuring the fresh air volume and the exhaust air volume, but also makes the flow routes of the fresh air and the exhaust air smooth, reduces the flow resistance, and is also conducive to reducing the height of the air-conditioning unit and reducing the volume of the air-conditioning unit.

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0023] In the attached figure:

[0024] Figure 1 This is a schematic diagram of the internal structure of the air-conditioning unit of the utility model;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the air-conditioning unit of the present utility model.

[0026] In the picture:

[0027] Shell 1, evaporation chamber 2, condensation chamber 3, evaporator 4, blower 5, condenser 6, condensing fan 7, total heat exchanger 8, exhaust fan 9, fresh air inlet 10, exhaust outlet 11, exhaust inlet 12, fresh air inlet chamber 13, exhaust inlet chamber 14, fresh air outlet chamber 15, exhaust outlet chamber 16, first partition 17, second partition 18.

[0028] It should be noted that the drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] Example 1:

[0033] like Figure 1 and Figure 2 As shown, the utility model provides a rail vehicle air-conditioning unit with integrated exhaust, including a shell 1, an evaporation chamber 2 and a condensation chamber 3 in the shell 1, an evaporator 4, a blower 5, etc. are installed in the evaporation chamber 2, and a compressor, a condensation fan 7, a condenser 6, etc. are installed in the condensation chamber 3.

[0034] In this embodiment, two evaporation chambers 2 and one condensation chamber 3 are preferably provided within the housing 1, with the two evaporation chambers 2 being located on either side of a single condensation chamber 3. Two condensation fans 7, two condensers 6, and two compressors are installed within the condensation chamber 3. The condensers 6 extend along the length of the housing 1, and the two condensation fans 7 are also arranged along the length of the housing 1 and installed between the two condensers 6. The two compressors form a refrigerant circulation path with the evaporators 4 within the evaporation chambers 2 on either side. The two evaporation chambers 2 have identical and completely symmetrical layouts.

[0035] The housing 1 of each evaporation chamber 2 is provided with a fresh air inlet 10, a waste exhaust outlet 11, and a waste exhaust inlet 12. A total heat exchanger 8 is installed within each evaporation chamber 2. Fresh air and waste exhaust air pass through two flow channels of the total heat exchanger 8, respectively, and undergo heat exchange within the total heat exchanger 8. After heat exchange, the waste exhaust air is discharged to the outside through the waste exhaust outlet 11. After heat exchange, the fresh air mixes with the return air entering the air conditioning unit, further exchanges heat with the evaporator 4, and is finally delivered into the vehicle compartment by the blower 5.

[0036] As the fresh air and exhaust air pass through the heat exchanger 8, the exhaust air's cooling (in summer) and heat (in winter) are absorbed by the fresh air. The cooled and heated fresh air is then mixed with the return air. Using the exhaust air from the vehicle to pre-treat the fresh air for heat exchange solves the problem of reusing the exhaust gas inside the vehicle, effectively reduces the fresh air load, and improves the energy efficiency of the air conditioning unit.

[0037] In this embodiment, it is further preferred that two total heat exchangers 8 are installed within a single evaporation chamber 2, and the two total heat exchangers 8 are arranged along the width of the housing 1. A fresh air inlet 10 is preferably provided on each of the two side panels of the housing 1 along its width, corresponding to the two fresh air inlets 10. Two exhaust air inlets 12 are provided on the bottom plate of the housing 1, corresponding to the two fresh air inlets 10. A fresh air inlet chamber 13 and an exhaust air inlet chamber 14 are provided on the air inlet side of each total heat exchanger 8, and a fresh air outlet chamber 15 and an exhaust air outlet chamber 16 are provided on the air outlet side of each total heat exchanger 8.

[0038] In this way, by setting up two fresh air inlets 20, two exhaust air inlets 12 and two full heat exchangers 8, not only can the fresh air volume and exhaust air volume be greatly increased, but also the recovery rate of cooling and heat of exhaust air can be improved, the heat recovery efficiency of exhaust air can be improved, and the energy efficiency ratio of the air-conditioning unit can be further improved.

[0039] In this embodiment, preferably, the fresh air inlet chamber 13 and the waste exhaust air inlet chamber 14 are located on the same side of the full heat exchanger 8, that is, both are located on the side of the full heat exchanger 8 close to the side panel of the shell 1 (the side panel on the side where the fresh air inlet 10 is opened), and the fresh air inlet chamber 13 and the waste exhaust air inlet chamber 14 are arranged in an upper and lower manner, with the fresh air inlet chamber 13 located above the waste exhaust air inlet chamber 14, and the fresh air inlet chamber 13 and the waste exhaust air inlet chamber 14 are separated by a first partition 17.

[0040] In this embodiment, the waste air outlet chamber 16 and the fresh air outlet chamber 15 are also arranged in an upper and lower arrangement, with the waste air outlet chamber 16 located above the fresh air outlet chamber 15. The waste air outlet chamber 16 and the fresh air outlet chamber 15 are separated by a second partition 18. Furthermore, the waste air outlet chamber 16 and the fresh air outlet chamber 15 are both located in the area between the two total heat exchangers 8, and the waste air outlet chambers 16 and the fresh air outlet chambers 15 corresponding to the two total heat exchangers 8 are respectively integrated into a chamber.

[0041] This layout structure is conducive to simplifying the structure of the air-conditioning unit, making the structure of the air-conditioning unit more compact, reducing the volume of the air-conditioning unit and reducing costs.

[0042] In this embodiment, the fresh air inlet chamber 13 and the exhaust air inlet chamber 14 are separated from the rest of the space within the evaporation chamber 2 by partitions (not shown) on both sides of the housing 1 in the length direction. The exhaust air chamber 16 is also separated from the rest of the space within the evaporation chamber 2 by partitions on both sides of the housing 1 in the length direction. To simplify the structure, the partitions on the sides of the fresh air inlet chamber 13, the exhaust air inlet chamber 14, and the exhaust air chamber 16 facing the condensation chamber 3 share a common partition with the partition between the condensation chamber 3 and the evaporation chamber 2.

[0043] In this embodiment, it is further preferred that only one exhaust fan 9 is installed in the exhaust air chamber 16, and an exhaust outlet 11 is opened on the top plate of the shell 1 corresponding to the exhaust fan 9. Under the action of one exhaust fan 9, the exhaust air in the car enters through the two exhaust inlets 12, passes through the full heat exchanger 8, and is discharged from the exhaust outlet 11 on the top.

[0044] In this way, two fresh air inlet cavities 13 and two waste exhaust inlet cavities 14 are provided in one evaporation chamber 2, one fresh air outlet chamber 15 and one waste exhaust outlet chamber 16 are provided, and only one waste exhaust fan 9 is installed. Under the premise of ensuring the fresh air volume and waste exhaust volume, the structure of the evaporation chamber 2 can be made simpler and more compact, the occupied space can be reduced, and the cost of the air-conditioning unit can be greatly reduced.

[0045] In this embodiment, both heat exchangers 8 are positioned obliquely within the housing 1. One side of a first partition 17, which separates the fresh air inlet chamber 13 from the exhaust air inlet chamber 14, is connected to the junction of the side panel (the side panel with the fresh air inlet 10) and the bottom panel of the housing 1. The other side of the first partition 17 is tilted upward and connected to the outer shell of the heat exchanger 6. A second partition 18 is installed within the housing 1 parallel to the bottom panel. Both sides of the second partition 18 are fixedly connected to the outer shells of the heat exchangers 8 on either side. The other two corners of the outer shell of the heat exchanger 8 are fixedly connected to the bottom panel and the top panel of the housing 1, respectively. This helps ensure the amount of fresh air and exhaust air, while also making the flow paths of fresh air and exhaust air smooth, reducing flow resistance, and further helping to reduce the height and volume of the air conditioning unit.

[0046] In this embodiment, an evaporator 4 is further installed at one end of the shell 1 in the length direction of the fresh air outlet chamber 15, and the evaporator 4 is extended along the width direction of the shell 1. A return air outlet is opened on the bottom plate of the shell 1 on the air inlet side of the evaporator 4 (not shown in the figure), and a blower 5 is installed on the other side of the evaporator 4, and an air outlet is opened on the end plate or bottom plate of the shell 1 corresponding to the blower 5 (not shown in the figure).

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the flow paths of the fresh air and the waste exhaust air are as follows. The flow paths of the fresh air and the waste exhaust air in the two evaporation chambers 2 are the same. One of the evaporation chambers 2 is used as an example for description:

[0048] Under the action of the blower 5, fresh air enters the two fresh air inlet chambers 13 on the upper layer from the fresh air inlets 10 on both sides of the shell 1. At the same time, the exhaust air in the car enters the two exhaust air inlet chambers 14 on the lower layer from the two exhaust inlets 12 on the bottom plate of the shell 1 under the action of the exhaust fan 9.

[0049] Fresh air and exhaust air exchange heat within two separate heat exchangers 8. During cooling, the fresh air releases heat to the exhaust air, lowering its temperature. During heating, the fresh air absorbs heat from the exhaust air, raising its temperature. Exhaust air and fresh air simultaneously pass through heat exchanger 9, where the cooling or heating in the exhaust air is used to treat the fresh air.

[0050] After being pre-cooled or preheated, the fresh air enters the fresh air outlet chamber 15 located on the lower level between the two total heat exchangers 8, flows out toward the evaporator 4, and mixes with the return air entering the air conditioning unit. The mixed air passes through the evaporator 4, where it exchanges heat with the refrigerant inside the evaporator 4. The heat-exchanged air is then delivered into the vehicle compartment by the blower 5, where it is used to regulate the temperature, humidity, and freshness of the interior environment.

[0051] Under the action of the exhaust fan 9, the exhaust air simultaneously enters the exhaust air cavity 16 located on the upper layer between the two total heat exchangers 8, and is finally discharged to the outside through the exhaust outlet 11 at the top.

[0052] The rail vehicle air conditioning unit with integrated exhaust gas discharge provided by the utility model has the following advantages:

[0053] 1. The air-conditioning unit is equipped with a full heat exchanger in the evaporation chamber. The exhaust air and the fresh air are heat exchanged in the full heat exchanger. The exhaust air in the vehicle is used to process the fresh air, which solves the problem of reusing the exhaust air in the vehicle, reduces the fresh air load, and improves the energy efficiency of the air-conditioning unit.

[0054] 2. The fresh air inlet and the exhaust inlet of the air-conditioning unit are set correspondingly, and the fresh air inlet cavity and the exhaust air inlet cavity on the air inlet side of the full heat exchanger are arranged up and down, and the exhaust air outlet cavity and the fresh air outlet cavity on the air outlet side of the full heat exchanger are also arranged up and down. This is conducive to simplifying the structure of the air-conditioning unit, making the structure of the air-conditioning unit more compact, reducing the volume of the air-conditioning unit while ensuring the heat exchange effect, and reducing costs.

[0055] 3. The air-conditioning unit is provided with two fresh air inlets, two exhaust inlets and one exhaust outlet in one evaporation chamber, and only one exhaust fan is provided in the exhaust air chamber. Under the premise of ensuring the fresh air volume and exhaust air volume, the structure of the evaporation chamber can be made simpler and more compact, the volume of the air-conditioning unit can be reduced, and the cost of the air-conditioning unit can be greatly reduced.

[0056] 4. In this air-conditioning unit, the first partition for separating the fresh air inlet chamber and the waste exhaust inlet chamber is arranged to be inclined upward, which is not only conducive to ensuring the fresh air volume and waste exhaust volume, but also makes the flow routes of the fresh air and waste exhaust smooth, reduces flow resistance, and is also conducive to reducing the height of the air-conditioning unit and reducing the volume of the air-conditioning unit.

[0057] Example 2:

[0058] The difference from Example 1 is that, in this embodiment, only one full heat exchanger 8 is provided in the evaporation chamber 2, and the full heat exchanger 8 is also installed obliquely in the shell 1. A fresh air inlet 10 is opened on the side panel of one side of the shell 1, and a waste exhaust inlet 12 is opened on the bottom plate of the shell 1 corresponding to the fresh air inlet 10.

[0059] Similar to the first embodiment, in this embodiment, the fresh air inlet chamber 13 and the exhaust air inlet chamber 14 are also arranged on the side of the total heat exchanger 8 close to the side panel of the shell 1 (the side panel on the side with the fresh air inlet 10), and are arranged vertically, with the fresh air inlet chamber 13 located above the exhaust air inlet chamber 14. The exhaust air chamber 16 and the fresh air outlet chamber 15 are also arranged vertically, with the exhaust air chamber 16 located above the fresh air outlet chamber 15. The first partition 17 is also installed obliquely in the shell 1, and the second partition 18 is installed horizontally in the shell 1. One side of the second partition 18 is fixedly connected to the outer shell of the total heat exchanger 8, and the other side is fixedly connected to the side panel on the other side of the shell 1 (the side without the fresh air inlet 10).

[0060] A waste exhaust fan 9 is installed in the waste exhaust air chamber 16 , and a waste exhaust outlet 11 is opened on the top plate of the shell 1 corresponding to the waste exhaust fan 9 .

[0061] In this embodiment, the flow paths of the fresh air and the waste exhaust air are the same as those described in the first embodiment and will not be described in detail.

[0062] Example 3:

[0063] The difference from Example 1 and Example 2 is that, in this embodiment, only one evaporation chamber 2 can be set in the shell 1, and the evaporation chamber 2 is set on one side of the condensation chamber 3. The structure in the evaporation chamber 2 is the same as that described in Example 1 and Example 2.

[0064] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments with equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A rail vehicle air conditioning unit with integrated exhaust, comprising a housing having an evaporation chamber and a condensation chamber within the housing, characterized in that: A total heat exchanger is installed in the evaporation chamber, and a fresh air inlet, a waste exhaust inlet and a waste exhaust outlet are provided on the shell. The fresh air and the waste exhaust air pass through the total heat exchanger respectively and perform heat exchange in the total heat exchanger. The fresh air inlet chamber and the waste exhaust inlet chamber on the air inlet side of the total heat exchanger are arranged up and down and separated by a first partition, and the waste exhaust chamber and the fresh air outlet chamber on the air outlet side of the total heat exchanger are arranged up and down and separated by a second partition.

2. The rail vehicle air conditioning unit with integrated exhaust system according to claim 1, characterized in that: The fresh air inlet is opened on the side plate of the shell, the exhaust inlet is opened on the bottom plate of the shell, the exhaust outlet is opened on the top plate of the shell, and the full heat exchanger is installed corresponding to the fresh air inlet and the exhaust inlet.

3. The rail vehicle air conditioning unit with integrated exhaust system according to claim 1, characterized in that: An exhaust fan is installed in the exhaust air cavity on the air outlet side of the total heat exchanger.

4. The rail vehicle air conditioning unit with integrated exhaust system according to claim 1, characterized in that: Fresh air inlets are respectively opened on the symmetrical side panels of the shell, and two full heat exchangers are installed in the shell accordingly. Two exhaust inlets are opened on the bottom plate of the shell. After the fresh air and exhaust air are heat exchanged in the full heat exchanger, they enter the fresh air outlet cavity and exhaust air outlet cavity located between the two full heat exchangers and are then discharged respectively.

5. The rail vehicle air conditioning unit with integrated exhaust system according to claim 4, characterized in that: An exhaust fan is installed in the exhaust air cavity between the two full heat exchangers, and an exhaust outlet is opened on the top plate of the shell corresponding to the exhaust fan. The exhaust air entering the two exhaust inlets is discharged from the exhaust outlet on the top.

6. The rail vehicle air conditioning unit with integrated exhaust system according to claim 1, characterized in that: The total heat exchanger is obliquely arranged in the shell, and the outer shell is fixedly connected to the first partition plate, the second partition plate, the bottom plate of the shell and the top plate of the shell.

7. The rail vehicle air conditioning unit with integrated exhaust system according to claim 6, characterized in that: One side of the first partition is connected to the connection between the bottom plate of the shell and the side plate with the fresh air inlet, the other side of the first partition is tilted upward and connected to the outer shell of the full heat exchanger, and the second partition is installed in the shell parallel to the bottom plate.

8. The rail vehicle air conditioning unit with integrated exhaust system according to claim 1, characterized in that: An evaporator is installed at one end of the fresh air outlet cavity, and the evaporator is extended along the width direction of the shell. A return air outlet is opened on the bottom plate of the shell on the air inlet side of the evaporator. A blower is installed on the air outlet side of the evaporator, and an air outlet is opened on the end plate and / or bottom plate of the shell corresponding to the blower.

9. The rail vehicle air conditioning unit with integrated exhaust system according to any one of claims 1 to 8, characterized in that: Two evaporation chambers and one condensation chamber are arranged in the shell, and the two evaporation chambers are arranged on both sides of the condensation chamber.

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