Central gas supply control system and method with desiccant regeneration

Abstract

The present application relates to a kind of central gas source control systems with desiccant regeneration, the system includes, air filter module, air filter module is connected with air compression module, air compression module is connected with gas-liquid separation module, detection module is connected with gas-liquid separation module, gas storage module and gas distribution module air filter module is used to filter impurities in external air;Air compression module is used to compress filtered air to high pressure state;Gas-liquid separation module is used to separate water vapor in high-pressure air, while realizing desiccant adsorption drying and backwashing regeneration;Detection module is used to detect the temperature, pressure and humidity of gas and then identify the saturation degree of desiccant.The present application is monitored by detection module and switches two-position four-way valve and solenoid valve, realizes the alternate operation mode of double drying barrel, realizes that system can be continuously operated, it is simple and convenient to operate, and applicability is strong.The present application also provides a kind of central gas source control method with desiccant regeneration.

Description

Technical Field

[0001] This invention relates to the field of central gas source technology, and more specifically to a central gas source control system and method with desiccant regeneration. Background Technology

[0002] In a vehicle's central air supply system, the central air supply system is the core component that generates and provides dry, clean compressed air. Its performance directly affects the vehicle's operational stability and passenger comfort. If moisture in the compressed air is not effectively removed, it will freeze in the system or cause component corrosion, leading to system malfunctions. Therefore, central air supply systems typically integrate a dryer, whose internal desiccant is responsible for adsorbing moisture from the air.

[0003] After adsorbing moisture, the desiccant gradually becomes saturated, and its adsorption capacity decreases. It must be regenerated to restore its performance. Existing regeneration control systems lack real-time monitoring and intelligent control of the desiccant's status, resulting in inaccurate regeneration timing, unstable drying effect, or excessively frequent regeneration that wastes energy and shortens the desiccant's lifespan. Furthermore, the system requires long-term shutdown for regeneration, which affects the continuous operation of the system and reduces the user experience.

[0004] Therefore, it is necessary to provide a new central gas source control system and method with desiccant regeneration. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the purpose of this invention is to provide a central air source control system with desiccant regeneration that monitors and switches between a two-position four-way valve and a solenoid valve through a detection module, thereby achieving an alternating working mode of the two drying tanks, enabling the system to operate continuously, with simple and convenient operation and strong applicability.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a central air source control system with desiccant regeneration, comprising: an air filtration module, an air compression module connected to the air filtration module, a gas-liquid separation module connected to the air compression module, a detection module connected to the gas-liquid separation module, an air storage module, and a gas distribution module. The air filtration module is used to filter impurities in the outside air, providing clean air intake for the system; The air compression module is used to compress the filtered air to a high pressure state to meet the system's working pressure requirements; The gas-liquid separation module is used to separate water vapor from high-pressure air, and at the same time realize desiccant adsorption drying and backflushing regeneration. The detection module is used to detect the temperature, pressure, and humidity of the gas to identify the saturation level of the desiccant; The gas storage module stores high-pressure gas after drying and separation, ensuring a stable gas supply to the system. The gas distribution module distributes the stored high-pressure gas to various application interfaces.

[0007] Furthermore, the first input terminal of the air filtration module is connected to the external air to introduce external air and simultaneously perform preliminary filtration to remove impurities. The output end of the air filtration module is connected to the first input end of the air compression module, and is used to deliver the filtered clean air to the air compression module. The output end of the air compression module is connected to the first input end of the gas-liquid separation module, and is used to deliver the compressed high-pressure air to the gas-liquid separation module for condensate separation. The first output terminal of the gas-liquid separation module is connected to the input terminal of the gas storage module, and is used to deliver the dry air after separating the condensate to the gas storage module for storage. The first output terminal of the gas storage module is connected to the input terminal of the gas distribution module, and is used to deliver the stored high-pressure dry air to the gas distribution module.

[0008] Furthermore, the second output terminal of the gas storage module is connected to the second input terminal of the gas-liquid separation module, which is used to provide high-pressure gas for backflushing the saturated desiccant in the gas-liquid separation module to realize the regeneration of the desiccant; The output terminal of the detection module is connected to the third input terminal of the gas-liquid separation module, and is used to detect the gas temperature, pressure, humidity data and desiccant saturation status in the gas-liquid separation module. The output of the gas distribution module is connected to the second input of the air filter module for external air extraction.

[0009] Furthermore, the air filtration module includes a first air filter, and the air compression module includes a first two-stage compressor, a second two-stage compressor, and drive motors connected to the first two-stage compressor and the second two-stage compressor, respectively.

[0010] Furthermore, the first two-stage compressor and the second two-stage compressor are connected in parallel. The first two-stage compressor includes a first-stage compression chamber and a first-second-stage compression chamber. A piston assembly is provided in the first-stage compression chamber and the first-second-stage compression chamber. The piston assembly is driven to reciprocate by the drive motor.

[0011] Furthermore, the gas-liquid separation module includes a gas-liquid separator, a two-position four-way valve, a first drying tank and a second drying tank respectively connected to the two-position four-way valve, a first solenoid valve connected to the first drying tank, and a second solenoid valve connected to the second drying tank. Both the first drying tank and the second drying tank are provided with desiccant.

[0012] Furthermore, the outlet of the gas-liquid separator is also connected to a drain valve for outputting the liquid after gas-liquid separation; the first port of the two-position four-way valve is connected to the air outlet of the gas-liquid separator, the second port of the two-position four-way valve is connected to the outside air, the third port of the two-position four-way valve is connected to one end of the first drying tank, the fourth port of the two-position four-way valve is connected to one end of the second drying tank, the first solenoid valve is connected to the other end of the first drying tank, and the second solenoid valve is connected to the other end of the second drying tank.

[0013] Furthermore, the desiccant in the first drying chamber adsorbs moisture from the high-pressure gas for drying. During backflushing regeneration of the desiccant in the second drying chamber, the first and third ports of the two-position four-way valve are connected, as are the second and fourth ports. The high-pressure gas output from the compressed air module undergoes gas-liquid separation via the gas-liquid separator, and then flows through the first port of the two-position four-way valve to the third port, entering the first drying chamber to allow the desiccant to adsorb moisture from the high-pressure gas for drying. It then flows through the first solenoid valve to the gas storage module. During backflushing regeneration of the desiccant in the second drying chamber, the dried high-pressure gas in the gas storage module is output to the second drying chamber through the second solenoid valve. The dried high-pressure gas adsorbs and carries away moisture from the desiccant, then flows through the fourth port of the two-position four-way valve to the second port and is discharged into the outside air. Furthermore, the desiccant in the second drying chamber adsorbs moisture in the high-pressure gas for drying. When the desiccant in the first drying chamber is backflushed for regeneration, the first port and the fourth port of the two-position four-way valve are connected, and the second port and the third port of the two-position four-way valve are connected. The high-pressure gas output from the compressed air module undergoes gas-liquid separation once through the gas-liquid separator, and then enters the second drying chamber through the first port of the two-position four-way valve to adsorb moisture in the high-pressure gas for drying. It then flows to the gas storage module through the second solenoid valve. When the desiccant in the first drying chamber is backflushed for regeneration, the dried high-pressure gas in the gas storage module is output to the first drying chamber 33 through the first solenoid valve. The dried high-pressure gas adsorbs and carries away moisture in the desiccant, and then enters the second port through the third port of the two-position four-way valve and is discharged into the outside air.

[0014] A central gas source control method with desiccant regeneration, applied to the aforementioned central gas source control system with desiccant regeneration, the method comprising: Turn on the air filtration module and air compression module. After the outside air is filtered, it enters the air compression module to be compressed. The compressed high-pressure air is fed into the gas-liquid separation module for gas-liquid separation. The high-pressure gas output from the gas-liquid separation module is supplied to the gas distribution module according to the gas demand. The detection module monitors the saturation level of the desiccant in the first and second drying tanks of the gas-liquid separation module. When the saturation level of the desiccant in a certain drying tank reaches a preset threshold, the two-position four-way valve is automatically switched to backflush and regenerate the corresponding drying tank.

[0015] The beneficial effects of this invention are as follows: The central gas source control system with desiccant regeneration of this invention monitors the saturation level of the desiccant in the two drying tanks in real time through the detection module. Based on temperature, pressure, and humidity data, it intelligently determines the regeneration timing and automatically switches between the two-position four-way valve and the solenoid valve to realize the backflushing regeneration of the desiccant without manual intervention, ensuring that the system continuously outputs dry gas and improving the system's automation level and reliability. It adopts a dual-drying tank alternating working mode, with one group adsorbing and drying while the other group backflushes and regenerates, allowing the system to operate continuously without interrupting the gas supply. The regeneration process utilizes the system's self-stored high-pressure dry gas for backflushing, requiring no external energy and achieving energy efficiency. In addition, the gas distribution module integrates multiple functions such as air suspension gas supply, external gas supply, massage armrest gas supply, and oxygen generation gas supply, supporting multiple gas supply modes such as high pressure, low pressure, and suction. It has good applicability and expandability, and its compact structure, simple and convenient operation, and strong applicability make it highly adaptable. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] In the picture: Figure 1 This is a structural block diagram of a central gas source control system with desiccant regeneration provided in Embodiment 1 of the present invention; Figure 2 A schematic diagram of the central gas source control system with desiccant regeneration provided in Embodiment 1 of the present invention; Figure 3 This is a flowchart of a central gas source control method with desiccant regeneration provided in Embodiment 2 of the present invention.

[0018] The following are the labeling elements in the figure: A central air supply control system 100 with desiccant regeneration; Air filtration module 1, first air filter 11; Air compression module 2, first two-stage compressor 21, first stage compression chamber 211, first stage compression chamber 212, first stage intake check valve 213, first stage exhaust check valve 214, first stage intake check valve 215, first stage exhaust check valve 216, second two-stage compressor 22, second stage compression chamber 221, second stage compression chamber 222, second stage intake check valve 223, second stage exhaust check valve 224, second stage intake check valve 225, second stage exhaust check valve 226, drive motor 23 Gas-liquid separation module 3, gas-liquid separator 31, two-position four-way valve 32, first drying tank 33, second drying tank 34, first solenoid valve 35, second solenoid valve 36, drain valve 37. Detection module 4; Gas storage module 5; Gas distribution module 6, air suspension air supply component 61, two-position three-way valve 611, dryer 612, high pressure valve block 613, pressure sensor 614, external air supply component 62, third solenoid valve 621, external air supply interface 622, second air filter 623, fourth solenoid valve 624, massage armrest air supply component 63, fifth solenoid valve 631, massage armrest air supply interface 632, oxygen generation air supply component 64, sixth solenoid valve 641, oxygen generation air supply interface 642. Detailed Implementation

[0019] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the figures. The process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0020] It should be understood that although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are used merely to distinguish one unit from another. For example, without departing from the scope of the exemplary embodiments, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0022] First implementation method: like Figure 1 As shown, an embodiment of the present invention provides a central air source control system 100 with desiccant regeneration, comprising: an air filtration module 1, an air compression module 2 connected to the air filtration module 1, a gas-liquid separation module 3 connected to the air compression module 2, a detection module 4 connected to the gas-liquid separation module 3, a gas storage module 5, and a gas distribution module 6. The air filtration module 1 filters impurities in the external air, providing clean intake air for the system. The air compression module 2 compresses the filtered air to a high pressure to meet the system's operating pressure requirements. The gas-liquid separation module 3 separates water vapor from the high-pressure air, simultaneously achieving desiccant adsorption drying and backflushing regeneration. The detection module 4 detects the temperature, pressure, and humidity of the gas to identify the desiccant saturation level. The gas storage module 5 stores the dried and separated high-pressure gas, ensuring a stable gas supply to the system. The gas distribution module distributes the stored high-pressure gas to various application interfaces.

[0023] In some embodiments, the first input of the air filtration module 1 is connected to external air to introduce external air and perform preliminary filtration to remove impurities. The output of the air filtration module 1 is connected to the first input of the air compression module 2 to deliver filtered clean air to the air compression module 2. The output of the air compression module 2 is connected to the first input of the gas-liquid separation module 3 to deliver compressed high-pressure air to the gas-liquid separation module 3 for condensate separation. The first output of the gas-liquid separation module 3 is connected to the input of the gas storage module 5 to deliver dry air after condensate separation to the gas storage module 5 for storage. The first output of the gas storage module 5 is connected to the input of the gas distribution module 6 to deliver the stored high-pressure dry air to the gas distribution module 6 in preparation for subsequent distribution. The second output of the gas storage module 5 is connected to the second input of the gas-liquid separation module 3 to provide high-pressure gas for backflushing the saturated desiccant in the gas-liquid separation module 3, thereby regenerating the desiccant. The output of the detection module 4 is connected to the third input of the gas-liquid separation module 3, and is used to detect the gas temperature, pressure, humidity data, and desiccant saturation status in the gas-liquid separation module 3, thereby preparing for subsequent control of the regeneration process. The output of the gas distribution module 6 is connected to the second input of the air filtration module 1, and is used for external air extraction.

[0024] In some of these embodiments, such as Figure 2As shown, the air filtration module 1 includes a first air filter 11. The first input end of the first air filter 11 is connected to the outside air to introduce outside air and perform preliminary filtration to remove impurities. The output end of the first air filter 11 is connected to the first input end of the air compression module 2 to deliver the filtered clean air to the air compression module 2.

[0025] In some embodiments, the air compression module 2 includes a first two-stage compressor 21, a second two-stage compressor 22, and a drive motor 23 connected to the first two-stage compressor 21 and the second two-stage compressor 22, respectively. The first two-stage compressor 21 and the second two-stage compressor 22 are connected in parallel. The first two-stage compressor 21 includes a first-stage compression chamber 211 and a first-stage compression chamber 212. Piston assemblies are provided in the first-stage compression chamber 211 and the first-stage compression chamber 212, and the drive motor 23 drives the piston assemblies to reciprocate. The piston assembly includes a first piston and a second piston disposed at both ends. The first piston is installed in the first-stage compression chamber 211, and the second piston is installed in the first-stage compression chamber 212. The drive motor 23 simultaneously drives the first piston and the second piston to reciprocate in the first-stage compression chamber 211 and the first-stage compression chamber 212. A first-stage intake check valve 213 is provided at the inlet of the first-stage compression chamber 211, a first-stage exhaust check valve 214 is provided at the outlet of the first-stage compression chamber 211, a first-stage intake check valve 215 is provided at the inlet of the first-stage compression chamber 212, and a first-stage exhaust check valve 216 is provided at the outlet of the first-stage compression chamber 212. The check valves are provided to prevent backflow of high-pressure gas.

[0026] In some embodiments, the second two-stage compressor 22 includes a second primary compression chamber 221 and a second secondary compression chamber 222. Piston assemblies are disposed in both the primary and secondary compression chambers 221 and 222, respectively, and are driven by a drive motor 23 to reciprocate. The piston assembly includes a first piston and a second piston located at both ends. The first piston is installed in the second primary compression chamber 221, and the second piston is installed in the second secondary compression chamber 222. The drive motor 23 simultaneously drives the first and second pistons to reciprocate within both chambers 221 and 222. A second primary intake check valve 223 is provided at the inlet of the second primary compression chamber 221, and a second primary exhaust check valve 224 is provided at the outlet of the second primary compression chamber 221. A second secondary intake check valve 225 is provided at the inlet of the second secondary compression chamber 222, and a second secondary exhaust check valve 226 is provided at the outlet of the second secondary compression chamber 222. These check valves are provided to prevent backflow of high-pressure gas.

[0027] In some embodiments, the gas flow in the air compression module 2 is as follows: the gas output from the air filter 11 is split into two and enters the first two-stage compressor 21 and the second two-stage compressor 22 respectively. The gas entering the first two-stage compressor 21 first passes through the first-stage intake check valve 213 and then enters the first-stage compression chamber 211 for primary compression before being output through the first-stage exhaust check valve 214. Subsequently, the primary compressed gas passes through the first-secondary intake check valve 215 and enters the first-secondary compression chamber 212 for secondary compression before being output as high-pressure gas through the first-secondary exhaust check valve 216 and then converges for output. Similarly, the gas entering the second two-stage compressor 22 first passes through the second-stage intake check valve 223 and then enters the second-stage compression chamber 221 for primary compression before being output through the second-stage exhaust check valve 224. Subsequently, the primary compressed gas passes through the second-secondary intake check valve 225 and enters the second-secondary compression chamber 222 for secondary compression before being output as high-pressure gas through the second-secondary exhaust check valve 226 and then converges for output.

[0028] In some embodiments, the gas-liquid separation module 3 includes a gas-liquid separator 31, a two-position four-way valve 32, a first drying tank 33 and a second drying tank 34 respectively connected to the two-position four-way valve 32, a first solenoid valve 35 connected to the first drying tank 33, and a second solenoid valve 36 connected to the second drying tank 34. Both the first drying tank 33 and the second drying tank 34 contain a desiccant. The input end of the gas-liquid separator 31 is connected to the output ports of the first two-stage compressor 21 and the second two-stage compressor 22 respectively, for receiving high-pressure gas to be separated. The liquid outlet of the gas-liquid separator 31 is also connected to a drain valve 37 for discharging the separated liquid. The first port of the two-position four-way valve 32 is connected to the outlet of the gas-liquid separator 31, the second port of the two-position four-way valve 32 is connected to the outside air, the third port of the two-position four-way valve 32 is connected to one end of the first drying tank 33, the fourth port of the two-position four-way valve 32 is connected to one end of the second drying tank 34, the first solenoid valve 35 is connected to the other end of the first drying tank 33, and the second solenoid valve 35 is connected to the other end of the second drying tank 34.

[0029] In some embodiments, the gas-liquid separation module 3 can simultaneously achieve both desiccant adsorption of moisture from high-pressure gas for drying and desiccant backflushing regeneration. In one scenario, the desiccant in the first drying tank 33 adsorbs moisture from the high-pressure gas for drying, while the desiccant in the second drying tank 33 undergoes backflushing regeneration. At this time, the first and third ports of the two-position four-way valve 32 are connected, as are the second and fourth ports. The high-pressure gas output from the compressed air module 2 undergoes gas-liquid separation via the gas-liquid separator 31, and then flows through the first port of the two-position four-way valve 32 to the third port, entering the first drying tank 33 to allow the desiccant to adsorb moisture from the high-pressure gas for drying. It then flows through the first solenoid valve 35 to the gas storage module 3. The desiccant in the second drying tank 33 undergoes backflushing regeneration. The dried high-pressure gas in the gas storage module 3 is output through the second solenoid valve 36 to the second drying tank 34, where the dried high-pressure gas adsorbs and carries away moisture from the desiccant, achieving backflushing regeneration. Finally, it enters the second port through the fourth port of the two-position four-way valve 32 and is discharged into the outside air. Another method involves the desiccant in the second drying chamber 34 adsorbing moisture from the high-pressure gas for drying, while the desiccant in the first drying chamber 33 undergoes backflushing regeneration. At this time, the first and fourth ports of the two-position four-way valve 32 are connected, as are the second and third ports. The high-pressure gas output from the compressed air module 2 undergoes gas-liquid separation via the gas-liquid separator 31, and then flows through the first and fourth ports of the two-position four-way valve 32 into the second drying chamber 33, where the desiccant adsorbs moisture from the high-pressure gas for drying. It then flows through the second solenoid valve 36 to the gas storage module 3. The desiccant in the first drying chamber 33 undergoes backflushing regeneration. The dried high-pressure gas in the gas storage module 3 is output to the first drying chamber 33 through the first solenoid valve 35, where the dried high-pressure gas adsorbs and carries away moisture from the desiccant, achieving backflushing regeneration. Finally, it flows through the third port of the two-position four-way valve 32 into the second port and is discharged into the outside air.

[0030] In some embodiments, the detection module 4 integrates a temperature sensor, a pressure sensor, and a humidity sensor. The detection module 4 is used to detect the saturation level of the desiccant in the first drying barrel 33 and the second drying barrel 34, respectively. When the saturation level of the desiccant in a certain drying barrel is detected to reach a preset threshold, the desiccant in the drying barrel is backflushed and regenerated by switching the port flow direction of the two-position four-way valve 32.

[0031] In some embodiments, the gas storage module 5 uses a 10-liter gas storage tank to store the high-pressure gas after drying and separation, ensuring a stable gas supply to the system, and also to supply gas for the backflushing and regeneration of the desiccant.

[0032] In some embodiments, the gas distribution module 6 includes an air suspension air supply assembly 61, an external air supply assembly 62, a massage armrest air supply assembly 63, and an oxygen-generating air supply assembly 64. The air suspension air supply assembly 61, external air supply assembly 62, massage armrest air supply assembly 63, and oxygen-generating air supply assembly 64 are each connected to the air storage module 5. The air suspension air supply assembly 61 includes a two-position three-way valve 611, a dryer 612 connected to the two-position three-way valve 611, a high-pressure valve block 613 connected to the dryer 612, and a pressure sensor 614. The first port of the two-position three-way valve 611 is connected to the output port of the air storage module 5, the second port of the two-position three-way valve 611 is connected to the input port of the dryer 612, and the third port of the two-position three-way valve 611 is open to the external atmosphere. The dryer 612 is connected to the input port of the high-pressure valve block 613 for further adsorbing moisture from the high-pressure gas. The high-pressure valve block 613 includes multiple solenoid valves for connecting to different interfaces of the air suspension system to achieve vehicle leveling. Pressure sensor 614 is connected to the input port of high-pressure valve block 613 to detect the gas pressure input to high-pressure valve block 613. If the pressure is too high, the pressure is reduced by venting through the third port of two-position three-way valve 611, thereby ensuring the safety and stability of the air suspension system.

[0033] In some embodiments, the external air supply assembly 62 includes a third solenoid valve 621 and an external air supply interface 622. One end of the third solenoid valve 621 is connected to the output port of the air storage module 5, and the other end of the third solenoid valve 621 is connected to the external air supply interface 622. External air supply is achieved by controlling the opening and closing of the third solenoid valve 621. The external air supply assembly 61 also includes a second air filter 623 and a fourth solenoid valve 624 connected to the external air supply interface 622. One end of the second air filter 623 is connected to the external air supply interface 622, and the other end is connected to the fourth solenoid valve 624. The other end of the fourth solenoid valve 624 is connected to the input port of the air compression module 2. When the fourth solenoid valve 624 is open, air can be drawn from the external air supply interface 622 into the air compression module 2 for compression, thereby achieving external air extraction. The massage armrest air supply assembly 63 includes a fifth solenoid valve 631 and a massage armrest air supply interface 632. One end of the fifth solenoid valve 631 is connected to the output port of the air storage module 5, and the other end is connected to the massage armrest air supply interface 632. The fifth solenoid valve 631 is a pressure reducing valve, capable of pressure reduction. Air supply to the massage armrests and other components in the vehicle is achieved by controlling the opening and closing of the fifth solenoid valve 631. The oxygen supply assembly 64 includes a sixth solenoid valve 641 and an oxygen supply interface 642. One end of the sixth solenoid valve 641 is connected to the output port of the air storage module 5, and the other end is connected to the oxygen supply interface 642. The sixth solenoid valve 641 is a pressure reducing valve, capable of pressure reduction. The oxygen generator is turned on and off by controlling the opening and closing of the sixth solenoid valve 641.

[0034] The air filtration process of the central air source control system 100 with desiccant regeneration provided in this embodiment of the invention is as follows: external air is initially filtered through the first air filter 11 of the air filtration module 1 to remove impurities and obtain clean air; subsequently, the clean air is delivered to the air compression module 2. The air compression process involves the first two-stage compressor 21 and the second two-stage compressor 22 of the air compression module 2 working in parallel, with the piston assembly reciprocating under the drive motor 23. Air first enters the primary compression chamber for primary compression, and then enters the secondary compression chamber through the exhaust check valve for secondary compression, ultimately outputting high-pressure gas; during the compression process, the intake and exhaust check valves at each stage prevent gas backflow.

[0035] The gas-liquid separation and drying process involves compressed high-pressure air entering the gas-liquid separator 31 of the gas-liquid separation module 3 for preliminary gas-liquid separation. The separated condensate is discharged through the drain valve 3. Subsequently, the gas enters one of the drying tanks (such as the first drying tank 33 or the second drying tank 34) through the two-position four-way valve 32. The desiccant in the drying tank adsorbs the moisture in the gas, achieving deep drying. The dried gas then enters the gas storage module 5 through the first solenoid valve 35 or the second solenoid valve 36.

[0036] The desiccant regeneration process involves the detection module 4 monitoring the saturation level of the desiccant in the first drying barrel 33 and the second drying barrel 34 in real time. When the desiccant saturation level of a certain drying barrel reaches a preset threshold, the two-position four-way valve 32 switches the flow direction at the port.

[0037] If the first drying chamber 33 is saturated, the two-position four-way valve 32 connects the first port to the fourth port and the second port to the third port, allowing high-pressure air to enter the second drying chamber 34 for adsorption and drying. At the same time, the high-pressure drying gas from the gas storage module 5 enters the first drying chamber 33 through the first solenoid valve 35 for backflushing and regeneration. The humid air, after removing moisture, is discharged into the outside air through the two-position four-way valve 32.

[0038] If the second drying chamber 34 is saturated, the two-position four-way valve 32 connects the first port to the third port and the second port to the fourth port, allowing high-pressure air to enter the first drying chamber 33 for adsorption drying. At the same time, the high-pressure drying gas from the gas storage module 5 enters the second drying chamber 34 through the second solenoid valve 36 for backflushing regeneration, and the humid air is discharged from the system.

[0039] The gas storage process involves storing the dried high-pressure gas in the gas storage module 5 to ensure a stable gas supply to the system and to provide a backflushing gas source for desiccant regeneration. The gas distribution process involves distributing the high-pressure gas from the gas storage module 5 to the various components of the gas distribution module 6. When the air suspension gas supply component 61 supplies gas, the gas enters the dryer 612 for further drying through a two-position three-way valve 611, and then supplies the air suspension system through a high-pressure valve block 613. A pressure sensor 614 monitors the pressure; if the pressure is too high, the two-position three-way valve 611 discharges excess gas into the atmosphere to ensure safety. When the external gas supply component 62 supplies gas, it controls the opening and closing of the third solenoid valve 621 to supply gas to external systems. Additionally, through the fourth solenoid valve 624 and the second air filter 623, air can be drawn from the external gas supply interface 622 via the air compression module 2 and backflushed to clean the air filter module 1. When the massage armrest gas supply component 63 supplies gas, it controls the pressure reduction through the fifth solenoid valve 631, supplying the depressurized gas to the massage armrest. When the oxygen supply component 64 supplies gas, it controls the pressure reduction through the sixth solenoid valve 641 to supply the oxygen supply device with the reduced gas.

[0040] The central gas source control system 100 with desiccant regeneration provided in this embodiment of the invention automatically controls the desiccant regeneration through the detection module 4 to ensure a continuous supply of dry high-pressure gas. At the same time, the gas distribution module supports various gas usage needs and has a backflushing cleaning function.

[0041] The central gas source control system with desiccant regeneration of this invention monitors the saturation level of the desiccant in the two drying tanks in real time through a detection module. Based on temperature, pressure, and humidity data, it intelligently determines the regeneration timing and automatically switches between a two-position four-way valve and a solenoid valve to achieve desiccant backflushing regeneration without manual intervention, ensuring continuous output of dry gas and improving the system's automation level and reliability. It adopts a dual-drying tank alternating working mode, with one tank adsorbing and drying while the other tank backflushes and regenerates, allowing the system to operate continuously without interrupting the gas supply. The regeneration process utilizes the system's self-stored high-pressure dry gas for backflushing, requiring no external energy and achieving energy efficiency. In addition, the gas distribution module integrates multiple functional components such as air suspension gas supply, external gas supply, massage armrest gas supply, and oxygen generation gas supply, supporting multiple gas supply modes such as high pressure, low pressure, and suction. It has good applicability and scalability, and its compact structure, simple and convenient operation, and strong applicability make it highly adaptable.

[0042] Second implementation method: like Figure 3 The flowchart shown is a central gas source control method with desiccant regeneration proposed in Embodiment 2 of the present invention.

[0043] As an example, the central gas source control method with desiccant regeneration includes: Step S1: Turn on the air filtration module and the air compression module. After the outside air is filtered, it enters the air compression module to compress the air.

[0044] Specifically, the air filtration module 1 is turned on, allowing outside air to be filtered through the first air filter 11. The drive motor 23 of the air compression module 2 is started, driving the first two-stage compressor 21 and the second two-stage compressor 22 to begin compressing air.

[0045] The filtered air is introduced into the first two-stage compressor 21 and the second two-stage compressor 22 respectively for two-stage compression: the air is first compressed in the first-stage compression chamber and then compressed in the second-stage compression chamber to output high-pressure gas.

[0046] Step S2: The compressed high-pressure air is input into the gas-liquid separation module for gas-liquid separation.

[0047] Specifically, compressed high-pressure air is introduced into a gas-liquid separator 31 for gas-liquid separation, and the separated condensate is discharged through a drain valve 37. A two-position four-way valve 32 controls the gas flow, directing the gas into either a first drying tank 33 or a second drying tank 34 for desiccant adsorption drying. The dried gas then enters a gas storage module 5 for storage via a first solenoid valve 35 or a second solenoid valve 36.

[0048] Step S3: The high-pressure gas output from the gas-liquid separation module is supplied to the gas distribution module according to the gas demand.

[0049] Specifically, when supplying air to the air suspension supply component 61 in the gas distribution module 6, the gas enters the dryer 612 for further drying through a two-position three-way valve 611, and then supplies the air suspension system through a high-pressure valve block 613. The pressure sensor 614 monitors the pressure; if the pressure is too high, the two-position three-way valve 611 discharges excess gas into the atmosphere to ensure safety. When supplying air to the external air supply component 62, the opening and closing of the third solenoid valve 621 is controlled to achieve external air supply. In addition, through the fourth solenoid valve 624 and the second air filter 623, air can be drawn from the external air supply interface 622 via the air compression module 2 and backflushed to clean the air filter module 1. When supplying air to the massage armrest air supply component 63, the pressure is reduced by the fifth solenoid valve 631, supplying the reduced-pressure gas to the massage armrest. When supplying air to the oxygen-generating air supply component 64, the pressure is reduced by the sixth solenoid valve 641, supplying the reduced-pressure gas to the oxygen-generating device.

[0050] Step S4: The detection module monitors the saturation level of the desiccant in the first and second drying barrels of the gas-liquid separation module. When the saturation level of the desiccant in a certain drying barrel reaches a preset threshold, the two-position four-way valve is automatically switched to backflush and regenerate the corresponding drying barrel.

[0051] Specifically, the detection module 4 monitors the saturation level of the desiccant in the first drying chamber 33 and the second drying chamber 34 in real time (based on temperature, pressure, and humidity data). When the desiccant saturation level in a certain drying chamber reaches a preset threshold, the flow direction of the two-position four-way valve 32 is automatically switched. If the first drying chamber 33 is saturated, switch the two-position four-way valve 32 to allow gas to enter the second drying chamber 34 for adsorption and drying, and at the same time open the first solenoid valve 35 to draw gas from the gas storage module 5 to backflush the first drying chamber 33 for regeneration.

[0052] If the second drying chamber 34 is saturated, switch the two-position four-way valve 32 to allow gas to enter the first drying chamber 33 for adsorption and drying, and at the same time open the second solenoid valve 36 to draw gas from the gas storage module 5 to backflush the second drying chamber 34 for regeneration.

[0053] The humid air generated during backflushing regeneration is discharged from the system through a two-position four-way valve 32.

[0054] The second embodiment of the present invention provides a central air source control method with desiccant regeneration, comprising: activating an air filtration module and an air compression module; filtering external air before it enters the air compression module for compression; inputting the compressed high-pressure air into a gas-liquid separation module for gas-liquid separation; distributing the high-pressure gas output from the gas-liquid separation module to a gas distribution module for gas supply according to gas demand; and a detection module monitoring the saturation level of the desiccant in the first and second drying barrels in the gas-liquid separation module, and automatically switching the port of a two-position four-way valve to backflush and regenerate the corresponding drying barrel when the desiccant saturation level in a certain drying barrel reaches a preset threshold. The central gas source control method for desiccant regeneration of this invention monitors the saturation level of the desiccant in two drying tanks in real time, intelligently determines the regeneration timing based on temperature, pressure, and humidity data, and automatically switches between a two-position four-way valve and a solenoid valve to achieve desiccant backflushing regeneration without manual intervention, ensuring continuous output of dry gas and improving automation and reliability. It adopts a dual-drying tank alternating working mode, with one tank for adsorption drying and the other for backflushing regeneration, allowing the system to operate continuously without interrupting the gas supply. The regeneration process utilizes the system's self-stored high-pressure dry gas for backflushing, requiring no external energy source, making it energy-efficient and highly effective. Furthermore, the gas distribution module integrates multiple functional components such as suspended gas supply, external gas supply, massage armrest gas supply, and oxygen generation gas supply, supporting multiple gas supply modes such as high pressure, low pressure, and extraction. It has good applicability and scalability, and its compact structure and simple, convenient operation make it highly adaptable.

[0055] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A central gas source control system with desiccant regeneration, characterized in that, include: An air filtration module, an air compression module connected to the air filtration module, a gas-liquid separation module connected to the air compression module, a detection module connected to the gas-liquid separation module, a gas storage module, and a gas distribution module. The air filtration module is used to filter impurities in the outside air, providing clean air intake for the system; The air compression module is used to compress the filtered air to a high pressure state to meet the system's working pressure requirements. The gas-liquid separation module is used to separate water vapor from high-pressure air, and at the same time realize desiccant adsorption drying and backflushing regeneration. The detection module is used to detect the temperature, pressure, and humidity of the gas to identify the saturation level of the desiccant; The gas storage module is used to store high-pressure gas after drying and separation to ensure stable gas supply to the system, and the gas distribution module is used to distribute the stored high-pressure gas to various application interfaces. The second output terminal of the gas storage module is connected to the second input terminal of the gas-liquid separation module, and is used to provide high-pressure gas for backflushing the saturated desiccant in the gas-liquid separation module to realize the regeneration of the desiccant; The output terminal of the detection module is connected to the third input terminal of the gas-liquid separation module, and is used to detect the gas temperature, pressure, humidity data and desiccant saturation status in the gas-liquid separation module. The output end of the gas distribution module is connected to the second input end of the air filter module for external air extraction. The gas-liquid separation module includes a gas-liquid separator, a two-position four-way valve, a first drying tank and a second drying tank respectively connected to the two-position four-way valve, a first solenoid valve connected to the first drying tank and a second solenoid valve connected to the second drying tank, and both the first drying tank and the second drying tank are provided with desiccant. The first port of the two-position four-way valve is connected to the outlet of the gas-liquid separator, the second port of the two-position four-way valve is connected to the outside air, the third port of the two-position four-way valve is connected to one end of the first drying barrel, and the fourth port of the two-position four-way valve is connected to one end of the second drying barrel.

2. The central gas source control system with desiccant regeneration according to claim 1, characterized in that, The first input terminal of the air filtration module is connected to the external air, which is used to introduce external air and perform preliminary filtration of the air to remove impurities. The output end of the air filtration module is connected to the first input end of the air compression module, and is used to deliver the filtered clean air to the air compression module. The output end of the air compression module is connected to the first input end of the gas-liquid separation module, and is used to deliver the compressed high-pressure air to the gas-liquid separation module for condensate separation. The first output terminal of the gas-liquid separation module is connected to the input terminal of the gas storage module, and is used to deliver the dry air after separating the condensate to the gas storage module for storage. The first output terminal of the gas storage module is connected to the input terminal of the gas distribution module, and is used to deliver the stored high-pressure dry air to the gas distribution module.

3. The central gas source control system with desiccant regeneration according to claim 1, characterized in that, The air filtration module includes a first air filter, and the air compression module includes a first two-stage compressor, a second two-stage compressor, and drive motors connected to the first two-stage compressor and the second two-stage compressor, respectively.

4. The central air source control system with desiccant regeneration according to claim 3, characterized in that, The first two-stage compressor is connected in parallel with the second two-stage compressor. The first two-stage compressor includes a first-stage compression chamber and a first-second-stage compression chamber. A piston assembly is provided in the first-stage compression chamber and the first-second-stage compression chamber. The piston assembly is driven to reciprocate by the drive motor.

5. The central air source control system with desiccant regeneration according to claim 1, characterized in that, The outlet of the gas-liquid separator is also connected to a drain valve for outputting the liquid after gas-liquid separation; the first solenoid valve is connected to the other end of the first drying tank, and the second solenoid valve is connected to the other end of the second drying tank.

6. The central air source control system with desiccant regeneration according to claim 5, characterized in that, The desiccant in the first drying chamber adsorbs moisture from the high-pressure gas for drying. When the desiccant in the second drying chamber is backflushed for regeneration, the first and third ports of the two-position four-way valve are connected, and the second and fourth ports of the two-position four-way valve are connected. The high-pressure gas output from the compressed air module undergoes gas-liquid separation once through the gas-liquid separator, and then enters the first drying chamber through the first port of the two-position four-way valve to the third port, where the desiccant adsorbs moisture from the high-pressure gas for drying. It then flows to the gas storage module through the first solenoid valve. When the desiccant in the second drying chamber is backflushed for regeneration, the dried high-pressure gas in the gas storage module is output to the second drying chamber through the second solenoid valve. The dried high-pressure gas adsorbs and carries away moisture from the desiccant, and then enters the second port through the fourth port of the two-position four-way valve before being discharged into the outside air.

7. The central gas source control system with desiccant regeneration according to claim 6, characterized in that, The desiccant in the second drying chamber adsorbs moisture from the high-pressure gas for drying. When the desiccant in the first drying chamber is backflushed for regeneration, the first port and the fourth port of the two-position four-way valve are connected, and the second port and the third port of the two-position four-way valve are connected. The high-pressure gas output from the compressed air module undergoes gas-liquid separation once through the gas-liquid separator, and then enters the second drying chamber through the first port of the two-position four-way valve to adsorb moisture from the high-pressure gas for drying. It then flows to the gas storage module through the second solenoid valve. When the desiccant in the first drying chamber is backflushed for regeneration, the dried high-pressure gas in the gas storage module is output to the first drying chamber through the first solenoid valve. The dried high-pressure gas adsorbs and carries away moisture from the desiccant, and then enters the second port through the third port of the two-position four-way valve and is discharged into the outside air.

8. A central gas source control method with desiccant regeneration, characterized in that, The method, applied to a central gas source control system with desiccant regeneration as described in any one of claims 1-7, comprises: Turn on the air filtration module and air compression module. After the outside air is filtered, it enters the air compression module to be compressed. The compressed high-pressure air is fed into the gas-liquid separation module for gas-liquid separation. The high-pressure gas output from the gas-liquid separation module is supplied to the gas distribution module according to the gas demand. The detection module monitors the saturation level of the desiccant in the first and second drying barrels of the gas-liquid separation module. When the saturation level of the desiccant in a certain drying barrel reaches a preset threshold, the two-position four-way valve is automatically switched to backflush and regenerate the corresponding drying barrel.

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