Drying system for vehicle-mounted gas supply unit and integrated vehicle-mounted gas supply unit

Abstract

The invention relates to a drying system for a vehicle-mounted air supply unit and an integrated vehicle-mounted air supply unit, the drying system comprises a shell, a drying cavity, an air inlet and an air outlet are formed in the shell, the shell covers a motor shell, the drying cavity is filled with a drying agent, and the drying agent is arranged around the peripheral side of the motor shell. According to the drying system, adsorption and regeneration of the drying agent can be achieved, in addition, the motor shell is wrapped in the drying cavity and prevented from being directly exposed, the requirement for corrosion resistance of the motor shell is greatly lowered, and meanwhile radiation noise of the motor is also greatly lowered.

Description

Technical Field

[0001] The present application relates to the technical field of gas drying for vehicle-mounted air supply systems, and in particular to a drying system for a vehicle-mounted air supply unit and an integrated vehicle-mounted air supply unit. Background Art

[0002] On-board air supply systems are widely used in various vehicles, especially in compressed air brake systems and air spring air supply systems. In order to ensure the normal operation of air supply, gas drying is a very important link.

[0003] The drying of the existing vehicle air supply system is often done by connecting an external drying tank to one side of the air supply unit, with the air inlet and outlet of the drying tank being opposite and connected to the exhaust port and return port of the air supply unit respectively, so as to dry the gas flowing in the air supply unit. However, after drying, liquid water will remain in the tank body of the existing drying tank, so that the desiccant is in a humid cavity for a long time, which is not conducive to the subsequent drying of the desiccant and the drying effect is poor. Summary of the invention

[0004] The purpose of the present application is to provide a drying system and an integrated vehicle-mounted air supply unit for a vehicle-mounted air supply unit, which have the advantages of good drying performance and desorption and regeneration of the desiccant for cyclic use.

[0005] In the first aspect, the drying system for the vehicle-mounted air supply unit provided in the present application adopts the following technical solution: A drying system for a vehicle-mounted air supply unit, the drying system comprising a shell, the shell having a drying chamber, an air inlet and an exhaust port, the shell cover being arranged on a motor shell, the drying chamber being filled with a desiccant, and the desiccant being arranged around the circumference of the motor shell.

[0006] By adopting the above technical solution, the motor in the motor housing will generate a certain amount of heat when working, and part of the heat will be transferred to the desiccant in the drying chamber through the heat conduction of the motor housing, thereby heating the desiccant in the drying chamber, which is beneficial to the adsorption and regeneration of the desiccant; in addition, the motor housing is enclosed in the drying chamber to avoid direct exposure to the outside, and the corrosion resistance requirements of the motor housing are greatly reduced, and the radiation noise of the motor is also greatly reduced.

[0007] Optionally, a heat-conducting medium is provided between the desiccant and the motor housing, and the heat-conducting medium is arranged around the circumference of the motor housing.

[0008] By adopting the above technical solution, the heat-conducting medium is used as a medium for heat conduction, which is beneficial to improving the heat conduction efficiency of the heat on the motor casing to the desiccant.

[0009] Optionally, the shell includes a drainage cavity, a partition assembly for separating the drying cavity and the drainage cavity, the partition assembly is provided with a water hole connecting the drying cavity and the drainage cavity, and the shell is provided with a drainage port for discharging liquid water in the drainage cavity.

[0010] By adopting the above technical solution, the water vapor adsorbed by the desiccant is desorbed into liquid water after heating. The liquid water can fall into the drainage cavity under the action of gravity and then be discharged to the outside of the shell through the drainage port, thereby avoiding water accumulation in the drying system and water backflow in the drying cavity.

[0011] Optionally, a first elastic member in an elastically compressed state is installed in the drainage cavity, one end of the first elastic member abuts against the side wall of the drainage cavity, and the other end of the first elastic member abuts against the side wall of the partition assembly.

[0012] By adopting the above technical solution, the first elastic member elastically supports the partition assembly and the side wall of the drainage cavity. The first elastic member in the elastically compressed state can press the partition assembly onto the desiccant, thereby fixing the desiccant.

[0013] Optionally, a second elastic member in an elastically stretched state is installed in the drying chamber, one end of the second elastic member is fixedly connected to the side wall of the drying chamber, and the other end of the second elastic member is fixedly connected to the side wall of the partition assembly.

[0014] By adopting the above technical solution, the second elastic member is located in the drying chamber, the second elastic member is elastically fixedly connected to the partition assembly, the second elastic member is in an elastically stretched state, and the partition assembly is pulled by elastic force. The partition assembly is used to compact the desiccant in the drying chamber, so that the arrangement of the desiccant is denser and more compact.

[0015] Optionally, the drainage cavity includes a guide slope opposite to the partition assembly, the drainage port is located at one end of the guide slope, and the other end of the guide slope is set at a height higher than the end where the drainage port is located.

[0016] By adopting the above technical solution, liquid water entering the drainage cavity can flow along the guide slope to the drain outlet and then be discharged from the drain outlet. The setting of the guide slope makes the drainage of the drainage cavity guided, thereby avoiding water accumulation in the corners of the drainage cavity or the situation where water is difficult to drain.

[0017] Optionally, the partition assembly includes a fiberboard with micropores and a metal-coated board bonded to the fiberboard, the fiberboard is located between the metal-coated board and the desiccant, the metal-coated board is bonded and sealed to the inner wall of the shell, and the water hole is arranged on the metal-coated board.

[0018] By adopting the above technical scheme, the metal-coated plastic board provides better structural strength for the partition assembly. The metal-coated plastic board is a structure covered with rubber and plastic, which is conducive to its close fit with the inner wall of the shell. In addition, the fiberboard is located between the desiccant and the metal-coated plastic board, which can prevent the powder generated by the crushing of the desiccant from falling into the drainage cavity, and avoid dust clogging the water holes on the metal-coated plastic board. Liquid water can normally pass through the micropores and water holes on the fiberboard and fall into the drainage cavity. The characteristics of the metal-coated plastic board and the fiberboard are effectively utilized to achieve the separation of the drying cavity and the drainage cavity. The separation effect is good and does not affect the normal drainage of the desiccant into the drainage cavity.

[0019] In the second aspect, the integrated vehicle-mounted air supply unit provided in the present application adopts the following technical solution: An integrated vehicle-mounted air supply unit comprises a unit body, wherein the unit body comprises an electronic control module, a distribution valve assembly, and a motor on the distribution valve assembly which are sequentially installed along the axial direction of the unit body, and the air supply unit further comprises any of the above-mentioned drying systems for the vehicle-mounted air supply unit, wherein the drying system is installed on the side of the distribution valve assembly facing away from the electronic control module, and a side surface of the shell is sealed with a side surface of the distribution valve assembly, and an air inlet and an air outlet are provided on the distribution valve assembly, and the air inlet and the air outlet are connected to a drying chamber.

[0020] By adopting the above technical solution, the structure from the electronic control module, the distribution valve assembly, the motor to the drying system is compact, and the drying system is arranged on the other side of the distribution valve assembly relative to the electronic control module, thereby realizing the modularization of the vehicle-mounted air supply unit without the need for a separate external drying tank.

[0021] Optionally, the side of the electric control module and the housing is provided with a plurality of mounting holes for connecting the bushing.

[0022] By adopting the above technical solution, the mounting holes are distributed on the electronic control module and the housing. Compared with the prior art in which the mounting holes are only set on the distribution valve assembly, the mounting holes of the present application are more dispersed and are installed on the frame through bushings. The center of gravity is more stable, and the vibration mode of the entire system of the air supply unit is better, which is beneficial to reduce the vibration excitation transmitted to the frame.

[0023] Optionally, the drain outlet includes a first drain outlet and a second drain outlet, the first drain outlet is located at the bottom of the drainage cavity and passes through the inside and outside of the shell, an opening and closing valve is installed on the first drain outlet, and the second drain outlet is connected to a drain hose, and the other end of the drain hose connected to the second drain outlet is set at a height higher than the wading height set for the vehicle.

[0024] By adopting the above technical scheme, when the vehicle is not in a wading state, the first drain port is opened and the drainage of the drying system can be discharged from the first drain port. In the case of severe flooding in some areas and the water level of the road surface is higher than the height set by the air supply unit, the first drain port can be closed by the opening and closing valve, and liquid water can be discharged outward from the second drain port. The drainage end position of the drainage hose is always higher than the wading height set for the vehicle. The wading height has different setting values ​​depending on the vehicle model. The drainage end of the drainage hose is set and installed at a height higher than the set fixed value, so that when crossing the flooded section of the road, the drying system can also perform normal drying and drainage without affecting the normal use of the air supply unit.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The heat generated by the motor is transferred to the desiccant through the motor shell, which desorbs and regenerates the desiccant, which is beneficial to the recycling and regeneration of the desiccant; 2. The drying system realizes the drainage function. After the desiccant is heated and the liquid water is desorbed, the system will drain the liquid water out of the drying system, thereby maintaining the effectiveness of the drying function of the drying system and preventing water accumulation and backflow; 3. The motor housing is enclosed in the housing of the drying system to prevent the motor housing from being exposed to the outside. Therefore, the corrosion resistance requirements of the motor housing are greatly reduced in this application, the cost is reduced, and the radiation noise of the motor is also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an explosion diagram of Example 1 of the present application; Figure 2 This is a cross-sectional view of Example 1 of the present application. Figure 1 , used to show the composition of the control valve assembly; Figure 3 This is a cross-sectional view of Example 1 of the present application. Figure 2 , used to show the internal structure of the drying chamber and the drainage chamber in the shell; Figure 4 is a cross-sectional schematic diagram of another embodiment of the embodiment 1 of the present application, used to show the installation position of the second elastic member; Figure 5 is an exploded schematic diagram of Example 2 of the present application, used to illustrate the modular component structure of the air supply unit; Figure 6 It is a cross-sectional schematic diagram of Example 2 of the present application, used to show the structure of the first drain outlet and the second drain outlet.

[0027] In the figure, 0, unit body; 1, shell; 101, air inlet; 102, exhaust port; 2, distribution valve assembly; 201, distribution valve block; 202, motor; 3, air inlet; 4, air outlet; 5, motor shell; 6, heat transfer medium; 7, drying chamber; 8, desiccant; 9, drainage chamber; 901, guide slope; 11, control valve assembly; 1101, valve body; 1102, humidity sensing unit; 1103, control unit; 12, partition assembly; 1201, fiberboard; 1202, metal-coated plastic board; 1203, water hole; 13, bolt; 14, first elastic member; 15, drainage port; 1501, first drainage port; 1502, second drainage port; 16, second elastic member; 17, electronic control module; 18, opening and closing valve; 19, drainage hose; 1901, connection end; 1902, drainage end; 20, installation hole. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0029] Example 1: A drying system for a vehicle air supply unit, referring to Figure 1 and Figure 2 , the drying system is installed on one side of the distribution valve assembly 2. In the present application, the distribution valve assembly 2 includes a distribution valve block 201 and a motor 202 installed on one side of the distribution valve block 201. The distribution valve block 201 is made of cast iron, steel or aluminum alloy. The drying system includes a housing 1. A motor housing 5 is provided on the motor 202. The housing 1 is provided on the motor housing 5. A drying chamber 7 is provided in the housing 1. The drying chamber 7 is filled with a desiccant 8. The desiccant 8 in this embodiment is a molecular sieve. An air inlet 3 and an air outlet 4 are provided on the distribution valve block 201. An air inlet 101 connected to the air inlet 3 and an air outlet 102 connected to the air outlet 4 are provided on the side of the housing 1 facing the distribution valve block 201. The air inlet 101 and the air outlet 102 are connected to the inside of the drying chamber 7. When the air supply unit is working, the air flow enters the drying chamber 7 from the air inlet 3 and the air inlet 101, is discharged from the exhaust port 102 after being dried by the molecular sieve, and then enters the valve path inside the distribution valve block 201 through the air outlet 4 on the distribution valve block 201.

[0030] Reference Figure 1 The air inlet 101 and the air outlet 102 on the shell 1 are both cylindrical structures, protruding from the side of the shell 1. The air inlet 101 and the air outlet 102 are respectively plugged and fixed to the air inlet hole 3 and the air outlet 4 on the distribution valve block 201.

[0031] Reference Figure 2The drying system also includes a control valve assembly 11 for controlling the opening and closing of the exhaust port 102. The control valve assembly 11 includes a valve body 1101, a control unit 1103, and a humidity sensing unit 1102 for detecting the humidity of the airflow at the exhaust port 102. When the humidity sensing unit 1102 senses that the humidity at the exhaust port 102 exceeds the humidity setting value, the control unit 1103 can control the valve body 1101 to close the exhaust port 102 to prevent the airflow with high humidity from entering the distribution valve assembly 2.

[0032] Reference Figure 2 and Figure 3 The motor housing 5 is covered on the motor 202, and the motor housing 5 is fixedly assembled on the side of the distribution valve block 201 by bolts 13, and the motor housing 5 protrudes from the side of the distribution valve block 201; a heat-conducting medium 6 is provided between the desiccant 8 and the motor housing 5. In this embodiment, the heat-conducting medium 6 is a glue layer formed by injecting polyurethane or epoxy resin as glue to the surface of the motor housing 5 using a glue injection process, and the glue layer covers the motor housing 5. Since polyurethane or epoxy resin has good thermal conductivity, the heat energy generated by the operation of the motor 202 in the motor housing 5 can be heat-conducted to the desiccant 8, thereby heating the desiccant 8, which is beneficial to the desorption and regeneration of the desiccant 8, and further beneficial to the regeneration and utilization of the desiccant 8.

[0033] Reference Figure 3 The housing 1 further includes a drainage chamber 9 and a partition assembly 12 for separating the drying chamber 7 from the drainage chamber 9. The height of the drainage chamber 9 is lower than the height of the drying chamber 7. In this embodiment, the partition assembly 12 includes a fiberboard 1201 with a microporous structure and a metal-coated plastic board 1202. The metal-coated plastic board 1202 is a structure in which an inner steel plate is coated with rubber and plastic on the outer surface. A water hole 1203 is provided on the metal-coated plastic board 1202. The micropores on the fiberboard 1201 are connected to the water hole 1203. When the partition assembly 12 is assembled, the fiberboard 1201 is placed on the surface of the metal-coated plastic board 1202 and fits each other. The sides of the two ends of the metal-coated plastic board 1202 are sealed and fit with the inner side wall of the drainage chamber 9. The micropores on the fiberboard 1201 are air-permeable and water-permeable. The liquid water in the drying chamber 7 can enter the drainage chamber 9 through the micropores and the water hole 1203.

[0034] In one embodiment, a first elastic member 14 in an elastically compressed state is installed in the drainage chamber 9. The first elastic member 14 includes a first spring. There are multiple first springs distributed along the length direction of the drainage chamber 9. The first spring is in an elastically compressed state in the drainage chamber 9, one end of which is in conflict with the metal-coated plate 1202, and the other end is in conflict with the bottom wall of the drainage chamber 9. The elastic force of the first spring acts on the partition assembly 12, and the partition assembly 12 is used to compact the molecular sieve in the drying chamber 7, making the molecular sieve more dense and compact.

[0035] Reference Figure 4 In another embodiment, a second elastic member 16 in an elastically stretched state is provided in the drying chamber 7. The second elastic member 16 includes a second spring. There are multiple second springs and they are distributed along the length direction of the drying chamber 7. The second spring is in an elastically stretched state in the drying chamber 7. One end of the second spring is glued and fixed to the fiberboard 1201, and the other end is glued and fixed to the top wall of the drying chamber 7. At the same time, in this embodiment, the fiberboard 1201 and the metal-coated plastic plate 1202 are glued and fixed at their periphery with an adhesive; the second spring uses elastic force to pull the partition assembly 12, so that the partition assembly 12 compacts the desiccant 8 in the drying chamber 7, thereby making the arrangement of the desiccant 8 more compact and dense.

[0036] Reference Figure 4 The drainage cavity 9 includes a guide slope 901 opposite to the metal-coated plastic plate 1202, and the guide slope 901 is located on the bottom wall of the drainage cavity 9; the guide slope 901 is an inclined surface with one end higher than the other end, and the drainage cavity 9 is provided with a drainage port 15 that runs through the inside and outside of the drainage cavity 9 at the lower end of the guide slope 901. The liquid water entering the drainage cavity 9 is finally discharged from the drainage port 15 to the outside of the drying system under the guidance of the guide slope 901.

[0037] The implementation principle of the embodiment of the present application is as follows: the airflow enters the drying chamber 7, and the desiccant 8 dries the airflow. When the motor 202 is working, the heat generated by the motor 202 can enter the drying chamber 7 through the motor housing 5, thereby heating the desiccant 8 in the drying chamber 7, so that the water vapor of the desiccant 8 is desorbed to form liquid water, and the liquid water enters the drainage chamber 9 through the partition assembly 12, and is then discharged from the drainage port 15. The dried airflow enters the valve path of the distribution valve block 201 from the exhaust port 102.

[0038] The molecular sieve is used as the desiccant 8. When the heating temperature of the molecular sieve reaches above 50 degrees Celsius, the molecular sieve stops drying the water vapor in the airflow. The water vapor passing through the exhaust port 102 will cause excessive humidity. After the humidity sensor detects the humidity, the control unit 1103 controls the valve body 1101 to close the exhaust port 102, and the airflow with relatively high humidity is discharged from the drain port 15, which reduces the situation where the airflow carries water vapor into the distribution valve assembly 2. In this process, the water vapor adsorbed by the molecular sieve itself will also be desorbed due to heating and discharged from the drain port 15 together. When the heating temperature is below 50 degrees Celsius, including the working condition where the desiccant 8 is not heated, the desiccant 8 normally adsorbs water vapor on the airflow, and the dried airflow enters the distribution valve assembly 2 through the exhaust port 102.

[0039] Embodiment 2: An integrated vehicle-mounted air supply unit, referring to Figure 5 and Figure 6, including a unit body 0, the unit body 0 includes an electronic control module 17, a distribution valve assembly 2, a motor 202 and embodiment 1, the electronic control module 17 is an ECU module in this embodiment, the electronic control module 17, the distribution valve assembly 2, the motor 202 and the drying system are distributed in sequence along the axial direction of the unit body 0 and installed together to realize the modularization of the unit body 0.

[0040] The distribution valve assembly 2 includes a distribution valve block 201 and a motor 202 installed on one side of the distribution valve assembly 2. A motor housing 5 is provided on the motor 202. The distribution valve block 201 is made of cast iron, steel or aluminum alloy. The motor housing 5 is fixed to the side of the distribution valve block 201 by bolts 13. The motor housing 5 is located on the side of the distribution valve block 201 facing away from the ECU module.

[0041] The drying chamber 7 of the housing 1 is covered on the motor housing 5, and the desiccant 8 fills the area between the inner wall of the drying chamber 7 and the motor housing 5. The side of the housing 1 and the side of the distribution valve block 201 are sealed and fixed by sealant. The distribution valve block 201 is provided with an air inlet 101 and an exhaust port 102. The distribution valve block 201 is provided with an air inlet 3 and an exhaust port 4. The side of the housing 1 facing the distribution valve block 201 is provided with an air inlet 101 connected to the air inlet 3 and an exhaust port 102 connected to the exhaust port 4, and the air inlet 101 and the exhaust port 102 are connected to the inside of the drying chamber 7. When the air supply unit is working, the air flow enters the drying chamber 7 from the air inlet 3 and the air inlet 101, and is discharged from the exhaust port 102 after being dried by the molecular sieve, and then enters the valve path inside the distribution valve block 201 through the exhaust port 4 on the distribution valve block 201.

[0042] Reference Figure 6 The heat generated by the motor 202 is transferred to the drying chamber 7 through the motor housing 5, heating the molecular sieve in the drying chamber 7, desorbing the water vapor of the molecular sieve to form liquid water, and entering the drainage chamber 9 through the partition assembly 12, and finally discharged from the drainage port 15.

[0043] Reference Figure 6 The drain outlet 15 includes a first drain outlet 1501 and a second drain outlet 1502, both of which are arranged at the bottom of the drain chamber 9. An on-off valve 18 for opening or closing the first drain outlet 1501 is installed on the shell 1. In this embodiment, the on-off valve 18 is a solenoid valve; the second drain outlet 1502 is connected to a drain hose 19, and a switch valve (not shown in the figure) for opening or closing the second drain outlet 1502 is installed on the shell 1; one end of the drain hose 19 connected to the second drain outlet 1502 is a connecting end 1901, and the other end is a drain end 1902. The setting height of the drain end 1902 is higher than the wading height set for the vehicle, so that when the vehicle passes over a flooded section of the road, the drying system can also perform normal drying and drainage without affecting the normal use of the air supply unit.

[0044] Reference Figure 5 A plurality of mounting holes 20 are provided on the side of the electric control module 17 and the housing 1. In the present embodiment, there are four mounting holes 20, two of which are installed on the electric control module 17 and two are installed on the side of the housing 1. The mounting holes 20 are used to connect mounting bushings (not shown in the figure).

[0045] The implementation principle of the embodiment of the present application is: the unit body 0 is modularly assembled, and the modularized air supply unit is installed on the frame through the mounting hole 20 and the bushing. The center of gravity is more stable, and the vibration mode of the entire system of the air supply unit is better, which is beneficial to reduce the vibration excitation transmitted to the frame. In addition, the second drain port 1502 and the drain hose 19 are arranged, so that the air supply unit will not have water backflow when the vehicle passes through a flooded section, and the drying system always maintains good drying performance.

[0046] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drying system for a vehicle-mounted air supply unit, characterized in that: The drying system comprises a housing (1), wherein the housing (1) has a drying chamber (7), an air inlet (101) and an air outlet (102), the housing (1) is disposed on a motor housing (5), the drying chamber (7) is filled with a desiccant (8), and the desiccant (8) is arranged around the circumference of the motor housing (5).

2. The drying system for a vehicle-mounted air supply unit according to claim 1, characterized in that: A heat-conducting medium (6) is provided between the desiccant (8) and the motor housing (5), and the heat-conducting medium (6) is arranged around the circumference of the motor housing (5).

3. The drying system for a vehicle-mounted air supply unit according to claim 2, characterized in that: The housing (1) comprises a drainage chamber (9), a partition assembly (12) for separating a drying chamber (7) from the drainage chamber (9), the partition assembly (12) being provided with a water hole (1203) for connecting the drying chamber (7) and the drainage chamber (9), and the housing (1) being provided with a drainage port (15) for discharging liquid water in the drainage chamber (9).

4. The drying system for a vehicle-mounted air supply unit according to claim 3, characterized in that: A first elastic member (14) in an elastically compressed state is installed in the drainage cavity (9); one end of the first elastic member (14) abuts against the side wall of the drainage cavity (9), and the other end abuts against the side wall of the partition assembly (12).

5. The drying system for a vehicle-mounted air supply unit according to claim 3, characterized in that: A second elastic member (16) in an elastically stretched state is installed in the drying chamber (7); one end of the second elastic member (16) is fixedly connected to the side wall of the drying chamber (7), and the other end is fixedly connected to the side wall of the partition assembly (12).

6. The drying system for a vehicle-mounted air supply unit according to claim 4, characterized in that: The drainage cavity (9) comprises a diversion slope (901) opposite to the partition assembly (12); the drainage port (15) is located at one end of the diversion slope (901); and the other end of the diversion slope (901) is arranged at a height higher than the end where the drainage port (15) is located.

7. The drying system for a vehicle-mounted air supply unit according to claim 5, characterized in that: The partition assembly (12) comprises a fiberboard (1201) having micropores and a metal-coated plastic board (1202) bonded to the fiberboard (1201); the fiberboard (1201) is located between the metal-coated plastic board (1202) and the desiccant (8); the metal-coated plastic board (1202) is bonded and sealed to the inner wall of the shell (1); and the water hole (1203) is provided on the metal-coated plastic board (1202).

8. An integrated vehicle-mounted air supply unit, comprising a unit body (0), the unit body (0) comprising an electric control module (17), a distribution valve assembly (2), and a motor (202) on the distribution valve assembly (2) which are sequentially installed along the axial direction of the unit body (0), characterized in that: The air supply unit also includes a drying system for a vehicle-mounted air supply unit as described in any one of claims 1 to 7, wherein the drying system is installed on the side of the distribution valve assembly (2) facing away from the electronic control module (17), and a side of the shell (1) and a side of the distribution valve assembly (2) are sealed, and an air inlet (3) and an air outlet (4) are provided on the distribution valve assembly (2), and the air inlet (3) and the air outlet (4) are connected to the drying chamber (7).

9. The integrated vehicle-mounted air supply unit according to claim 8, characterized in that: The electric control module (17) and the side surface of the housing (1) are provided with a plurality of mounting holes (20) for connecting bushings.

10. The integrated vehicle-mounted air supply unit according to claim 8, characterized in that: The drain port (15) comprises a first drain port (1501) and a second drain port (1502); the first drain port (1501) is located at the bottom of the drain cavity (9) and penetrates inside and outside the shell (1); an opening and closing valve (18) is installed on the first drain port (1501); the second drain port (1502) is connected to a drain hose (19); the other end of the drain hose (19) connected to the second drain port (1502) is arranged at a height higher than a wading height set for the vehicle.

Images