Central air supply device for vacuum adsorption desiccant regeneration

Abstract

The utility model belongs to central gas source gas supply technical field, concretely relates to a kind of vacuum adsorption desiccant regeneration central gas source gas supply device, including air filter module, the air compression module being connected with the air filter module, air suspension gas supply module being connected with the air compression module respectively, dry adsorption module, detection module and wing massage gas supply module;The dry adsorption module includes the first drying barrel and the second drying barrel of parallelly arranged, and dry agent and heating rod are arranged in the first drying barrel and the second drying barrel;The first drying barrel and the second drying barrel alternate work.The testing device of the utility model adopts vacuum adsorption and heating combination, realizes the efficient regeneration of desiccant, need not stop machine to alternate work, ensure system continuous gas supply.

Description

Technical Field

[0001] This utility model relates to the field of central gas supply technology, specifically to a central gas supply device for vacuum adsorption desiccant regeneration and a vanadium redox flow battery. Background Technology

[0002] In a vehicle's central air supply system, the central air supply unit 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 can 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 absorbing moisture, desiccants gradually become saturated, reducing their adsorption capacity. Regeneration is necessary to restore their performance. Existing central air supply systems typically replace the desiccant periodically; however, this method is costly, usually requires professional personnel, and is complex. Furthermore, some central air supply systems require prolonged shutdowns for backflushing regeneration, which affects continuous operation and reduces user experience.

[0004] Therefore, it is necessary to provide a new type of central gas supply device for vacuum adsorption desiccant regeneration. Utility Model Content

[0005] In view of this, the present invention provides a central air supply device for vacuum adsorption desiccant regeneration, which combines vacuum adsorption and heating to achieve efficient regeneration of desiccant, and can work alternately without stopping the machine to ensure continuous air supply to the system.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a central air source supply device for vacuum adsorption desiccant regeneration is provided, including an air filter module, an air compression module connected to the air filter module, an air suspension supply module, a drying adsorption module, a detection module, and a side wing massage supply module respectively connected to the air compression module. The drying and adsorption module is used to achieve desiccant adsorption of moisture in high-pressure gas for drying and desiccant regeneration through vacuum adsorption; the detection module is used to detect the temperature, pressure and humidity of the gas to identify the saturation level of the desiccant; the side-wing massage air supply module is connected to the output port of the drying and adsorption module; the drying and adsorption module includes a first drying tank and a second drying tank arranged in parallel, and both the first drying tank and the second drying tank are equipped with desiccant and heating rods; the first drying tank and the second drying tank work alternately, and when one drying tank performs the adsorption drying function, the other drying tank simultaneously performs a regeneration process combining vacuuming and heating.

[0007] Furthermore, the central air supply device also includes an air-suspended air supply module and a buffer air storage module connected to the air compression module, a gas-liquid separation module connected to the buffer air storage module, and an external air supply module connected to the gas-liquid separation module.

[0008] Furthermore, the first output terminal of the air compression module is connected to the input terminal of the air suspension air supply module, and the first output terminal of the air compression module is connected to the input terminal of the buffer air storage module; the output terminal of the buffer air storage module is connected to the input terminal of the gas-liquid separation module, and the first output terminal of the gas-liquid separation module is connected to the input terminal of the external air supply module; the second output terminal of the gas-liquid separation module is connected to the first input terminal of the drying adsorption module, and the first output terminal of the drying adsorption module is connected to the input terminal of the side wing massage air supply module; the output terminal of the detection module is connected to the second input terminal of the drying adsorption module, and the second output terminal of the drying adsorption module is connected to the second input terminal of the air compression module, for vacuuming and reverse regenerating the desiccant in the drying adsorption module.

[0009] Furthermore, the drying adsorption module also includes a fourth solenoid valve, a two-position four-way valve, a second one-way valve, and a third one-way valve; the first port of the two-position four-way valve is connected to the fourth solenoid valve, the second port is connected to the second two-stage compressor of the air compression module, the third port is connected to one end of the first drying barrel, and the fourth port is connected to one end of the second drying barrel. The second one-way valve is connected to the other end of the first drying barrel, and its flow direction is such that gas can only flow from the first drying barrel to the side massage air supply module; The third one-way valve is connected to the other end of the second drying barrel, and its flow direction is such that gas can only flow from the second drying barrel to the side massage air supply module.

[0010] Furthermore, the air compression module includes a first two-stage compressor and a second two-stage compressor; the first two-stage compressor and the second two-stage compressor are arranged in parallel, and the second input end of the second two-stage compressor is connected to the second port of the two-position four-way valve of the drying adsorption module for evacuating the first drying barrel or the second drying barrel.

[0011] Furthermore, a fifth solenoid valve is provided between the second two-stage compressor and the air filter module; when the fifth solenoid valve is closed, the second two-stage compressor is used to perform vacuuming and reverse regeneration of the desiccant in the drying adsorption module.

[0012] Furthermore, a two-position three-way valve is also provided at the output port of the second two-stage compressor. The first port of the two-position three-way valve is connected to the output end of the second two-stage compressor, the second port is connected to the input end of the air-suspension gas supply module and the buffer gas storage module, and the third port is connected to the external atmosphere. When the first port and the third port of the two-position three-way valve are connected, the second two-stage compressor discharges the gas it draws into the atmosphere.

[0013] Furthermore, the detection module integrates a temperature sensor, a pressure sensor, and a humidity sensor, which are used to detect the saturation level of the desiccant in the first drying barrel and the second drying barrel, respectively.

[0014] Furthermore, the air filtration module includes a first air filter, the input end of which is connected to external air, and the output end of which is connected to the air compression module.

[0015] Furthermore, the buffer gas storage module includes a second solenoid valve, a buffer gas storage tank, and a second pressure sensor.

[0016] The beneficial effects of this utility model are as follows: The central air supply device for vacuum adsorption desiccant regeneration integrates air filtration, compression, buffering, gas-liquid separation, drying adsorption, detection, and multi-channel air supply into one compact structure, facilitating installation and maintenance; it adopts a combination of vacuum adsorption and heating to achieve efficient desiccant regeneration, allowing for alternating operation without shutdown to ensure continuous system air supply; it simultaneously meets various air requirements such as air suspension, external tool air supply, and side massage, making it widely applicable; and it monitors the gas state and desiccant saturation in real time through a detection module, automatically switching the regeneration process to improve the system's automation level and reliability. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a structural block diagram of the central gas supply device for vacuum adsorption desiccant regeneration according to an embodiment of this utility model. Figure 2 This is a schematic diagram of the central gas supply device for vacuum adsorption desiccant regeneration according to an embodiment of the present invention.

[0019] The component names and their numbers in the diagram are as follows: Central gas supply unit 100; Air filtration module 1, first air filter 11; Air compression module 2, first two-stage compressor 21, first primary compression chamber 211, first secondary compression chamber 212, second two-stage compressor 22, second primary compression chamber 221, second secondary compression chamber 222, drive motor 23, fifth solenoid valve 24, two-position three-way valve 25; Air supply module 3, first solenoid valve 31, dryer 32, high pressure valve block 33, first pressure sensor 34; Buffer gas storage module 4, second solenoid valve 41, buffer gas storage tank 42, second pressure sensor 43; Gas-liquid separation module 5, gas-liquid separator 51, drain valve 52; External gas supply module 6, third solenoid valve 61, external gas supply interface 62; Drying and adsorption module 7, fourth solenoid valve 71, two-position four-way valve 72, first drying tank 73, second drying tank 74, second one-way valve 75, third one-way valve 76; Detection module 8; Side massage air supply module 9, side massage air supply interface 91. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, a particular feature, structure, or characteristic may be combined in any suitable manner.

[0025] like Figure 1 As shown, this embodiment provides a central air supply device 100 for vacuum adsorption desiccant regeneration, comprising an air filter module 1, an air compression module 2 connected to the air filter module 1, an air suspension air supply module 3 and a buffer air storage module 4 connected to the air compression module 2, a gas-liquid separation module 5 connected to the buffer air storage module 4, an external air supply module 6 and a drying adsorption module 7 connected to the gas-liquid separation module 5, a detection module 8, and a side-massage air supply module 9. The air filter module 1 filters impurities in the external air, providing clean intake air to the system. The air compression module 2 compresses the filtered air to a high-pressure state to meet the system's operating pressure requirements. The air suspension air supply module 3 provides high-pressure gas to the vehicle's air suspension system, meeting the requirements for suspension height adjustment, stiffness adjustment, etc. The buffer air storage module 4 temporarily stores the high-pressure gas after gas-liquid separation. The gas-liquid separation module 5 separates water vapor from the high-pressure air. The external air supply module 6 provides dry, clean high-pressure gas to external equipment or tools. The drying adsorption module 7 realizes desiccant adsorption drying and vacuum desiccant regeneration. The detection module 8 is used to detect the temperature, pressure, and humidity of the gas to identify the saturation level of the desiccant. The side massage air supply module 9 is used to supply air to the airbags of the seat or massage device to achieve side support or massage functions.

[0026] 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 first output of the air compression module 2 is connected to the input of the air-suspension air supply module 3 to provide the required high-pressure gas to the air-suspension system. The first output of the air compression module 2 is connected to the input of the buffer gas storage module 4 to store a portion of the compressed gas in the buffer gas storage module to balance system pressure fluctuations. The output of the buffer gas storage module 4 is connected to the input of the gas-liquid separation module 5 to send the stored gas into the gas-liquid separation module for dehumidification. The first output of the gas-liquid separation module 5 is connected to the input of the external air supply module 6 to output dry gas. The second output of the gas-liquid separation module 5 is connected to the first input of the drying adsorption module 7 to send the gas into the drying adsorption module for deep drying. The first output of the drying adsorption module 7 is connected to the input of the side massage air supply module 9, and is used to supply drying gas to the side massage airbags. The output of the detection module 4 is connected to the second input of the drying adsorption module 7, and is used to detect the gas temperature, pressure, humidity data and desiccant saturation state in the drying adsorption module 7, thereby preparing for subsequent control of the regeneration process. The second output of the drying adsorption module 7 is connected to the second input of the air compression module 2, and is used to perform vacuum reversal regeneration of the desiccant in the drying adsorption module 7.

[0027] In some of these embodiments, such as Figure 2 As 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.

[0028] 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 both the first and second two-stage compressors 21 and 22, respectively. The first two-stage compressor 21 and the second two-stage compressor 22 are connected in parallel. The input end of the first two-stage compressor 21 is connected to the air filter module 1, the first output end of the first two-stage compressor 21 is connected to the air suspension supply module 3 to provide compressed high-pressure gas to the vehicle's air suspension system, and the second output end of the first two-stage compressor 21 is connected to the buffer storage module 4 to store the compressed gas. 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 located at both ends. The first piston is installed in a first-stage compression chamber 211, and the second piston is installed in a first-second-stage compression chamber 212. The drive motor M simultaneously drives the first piston and the second piston to perform reciprocating compression motion in the first-stage compression chamber 211 and the first-second-stage compression chamber 212. A first-stage intake check valve is provided at the inlet of the first-stage compression chamber 211, and a first-stage exhaust check valve is provided at the outlet of the first-stage compression chamber 211. A first-second-stage intake check valve is provided at the inlet of the first-second-stage compression chamber 212, and a first-second-stage exhaust check valve is provided at the outlet of the first-second-stage compression chamber 212. The check valves are provided to prevent backflow of high-pressure gas.

[0029] In some embodiments, the first input terminal of the second two-stage compressor 22 is connected to the air filter module 1, and the first output terminal of the second two-stage compressor 22 is connected to the air suspension supply module 3 to provide compressed high-pressure gas to the vehicle's air suspension system. The second output terminal of the second two-stage compressor 22 is connected to the buffer storage module 4 to store the compressed gas. The second input terminal of the second two-stage compressor 22 is connected to the drying adsorption module 7, and the third output terminal of the second two-stage compressor 22 is connected to an external air pump to perform vacuum regeneration of the desiccant in the drying adsorption module 7. A fifth solenoid valve 24 is also provided between the second compressor 22 and the air filter 11 of the air filter module 1. When the fifth solenoid valve 24 is open, the second compressor 22 compresses the external gas into high-pressure gas for supply. When the fifth solenoid valve 24 is closed, the second compressor 22 performs vacuum regeneration of the desiccant in the drying adsorption module 7. The second two-stage compressor 22 includes a second-stage compression chamber 221 and a second-stage compression chamber 222. Piston assemblies are installed in both chambers, and a drive motor 23 drives these assemblies to reciprocate. Each piston assembly includes a first piston and a second piston located at both ends. The first piston is installed in the second-stage compression chamber 221, and the second piston is installed in the second-stage compression chamber 222. The drive motor 23 simultaneously drives both pistons to reciprocate within both chambers. A second-stage intake check valve and a second-stage exhaust check valve are installed at the inlet and outlet of the second-stage compression chamber 221, respectively. Both check valves are installed at the inlet and outlet of the second-stage compression chamber 222 to prevent backflow of high-pressure gas. A two-position three-way valve 25 is also installed at the output port of the second compressor 22 to switch the gas supply status of the second compressor 22. The first port of the two-position three-way valve 25 is connected to the output terminal of the second compressor 22, the second port of the two-position three-way valve 25 is connected to the input terminals of the suspended gas supply module 3 and the buffer gas storage module 4, and the third port of the two-position three-way valve 25 is open to the outside atmosphere. When the first port and the second port of the two-position three-way valve 25 are connected, the second compressor 22 compresses the outside gas into high-pressure gas for gas supply; when the first port and the third port of the two-position three-way valve 25 are connected, the second compressor 22 is used to perform vacuuming and reverse regeneration of the desiccant in the drying adsorption module 7.

[0030] In some embodiments, the air suspension air supply module 3 includes a first solenoid valve 31, a dryer 32 connected to the first solenoid valve 31, a high-pressure valve block 33 connected to the dryer 32, and a first pressure sensor 34. One end of the first solenoid valve 31 is connected to the output end of the air compression module 2, and the other end is connected to the dryer 32; by controlling the opening and closing of the first solenoid valve 31, the air supply status of the air suspension air supply module 3 is controlled. The dryer 32 is connected to the input end of the high-pressure valve block 33 to further adsorb moisture in the high-pressure gas. The high-pressure valve block 34 includes multiple solenoid valves for connecting to different interfaces of the air suspension system to achieve vehicle leveling. An exhaust valve is also provided between the first solenoid valve 31 and the dryer 32. The first pressure sensor 34 is connected to the input port of the high-pressure valve block 33 to detect the gas pressure input to the high-pressure valve block 33. If the pressure is too high, the exhaust valve is used to release gas to reduce the pressure, thereby ensuring the safety and stability of the air suspension system.

[0031] In some embodiments, the buffer gas storage module 4 includes a second solenoid valve 41, a buffer gas storage tank 42 connected to the second solenoid valve 41, and a second pressure sensor 43. One end of the second solenoid valve 41 is connected to the output end of the air compression module 2, and the other end is connected to the buffer gas storage tank 42. The other end of the buffer gas storage tank 42 is connected to the input end of the gas-liquid separation module 5, and the buffer gas storage tank 42 is used to store buffered high-pressure gas. The second pressure sensor 43 is connected to the input port of the buffer gas storage tank 42 and is used to detect the gas pressure input to the buffer gas storage tank 42.

[0032] In some embodiments, the gas-liquid separation module 5 includes a gas-liquid separator 51 and a drain valve 52 connected to the gas-liquid separator 51. The input end of the gas-liquid separator 51 is connected to the output port of the buffer gas storage tank 42 to receive the high-pressure gas to be separated. The liquid outlet of the gas-liquid separator 31 is connected to the drain valve 37 to output the liquid after gas-liquid separation. The gas outlet of the gas-liquid separator 31 is connected to the input ports of the external gas supply module 6 and the drying adsorption module 7, respectively.

[0033] In some embodiments, the external gas supply module 6 includes a third solenoid valve 61 and an external gas supply interface 62. One end of the third solenoid valve 61 is connected to the output port of the gas-liquid separation module 5, and the other end of the third solenoid valve 61 is connected to the external gas supply interface 62. The external gas supply status is controlled by controlling the opening and closing of the third solenoid valve 61.

[0034] In some embodiments, the drying adsorption module 7 includes a fourth solenoid valve 71, a two-position four-way valve 72 connected to the fourth solenoid valve 71, a first drying tank 73 and a second drying tank 74 respectively connected to the two-position four-way valve 72, a second one-way valve 75 connected to the first drying tank 73, and a third one-way valve 76 connected to the second drying tank 74. Both the first drying tank 73 and the second drying tank 74 contain a desiccant and a heating rod. One end of the fourth solenoid valve 71 is connected to the output port of the gas-liquid separation module 5, and the opening and closing of the fourth solenoid valve 71 controls the air supply status of the side-wing massage air supply module 9 connected to the drying adsorption module 7. The first port of the two-position four-way valve 32 is connected to the other end of the fourth solenoid valve 71. The second port of the two-position four-way valve 72 is connected to the input end of the second compressor 22. The third port of the two-position four-way valve 72 is connected to one end of the first drying barrel 73. The fourth port of the two-position four-way valve 72 is connected to one end of the second drying barrel 74. The second one-way valve 75 is connected to the other end of the first drying barrel 33. The third one-way valve 76 is connected to the other end of the second drying barrel 34. The flow direction of the second one-way valve 75 is such that gas can only flow from the first drying barrel 73 to the side massage air supply module 9. The flow direction of the third one-way valve 76 is such that gas can only flow from the second drying barrel 74 to the side massage air supply module 9.

[0035] In some embodiments, the drying adsorption module 7 can simultaneously achieve both desiccant adsorption of moisture in high-pressure gas for drying and desiccant regeneration through vacuum adsorption. In one scenario, the desiccant in the first drying tank 73 adsorbs moisture in the high-pressure gas for drying, while the desiccant in the second drying tank 73 undergoes vacuum adsorption regeneration. At this time, the second solenoid valve 41 and the fourth solenoid valve 71 are open, the fifth solenoid valve 24 is closed, and the first and third ports of the two-position four-way valve 72 are connected, as are the second and fourth ports. The high-pressure gas output from the first air compressor 21 of the compressed air module 2 sequentially passes through the second solenoid valve 41, the buffer storage tank 42, and the gas-liquid separator 51 for gas-liquid separation. Then, it is output through the first port of the two-position four-way valve 72 to the third port and enters the first drying tank 73 to achieve desiccant adsorption of moisture in the high-pressure gas for drying. During this time, the heating rod in the first drying tank 73 is not working, and the gas flows through the second one-way valve 75 to the side massage air supply module 9. The desiccant in the second drying barrel 73 is regenerated by vacuum adsorption. The second port and the fourth port of the two-position three-way valve 25 are connected. Since the flow direction of the third one-way valve 76 is such that the gas can only flow from the second drying barrel 74 to the side massage air supply module 9, the second air compressor 22 of the compressed air module 2 works to perform vacuuming. The heating rod in the second drying barrel 74 heats the gas to a high temperature, improving the regeneration performance of the desiccant. At this time, the gas in the second drying barrel 74 is drawn in by the second air compressor 22. The gas enters the second port through the fourth port of the two-position four-way valve 72 and is then drawn into the second air compressor 22. At this time, it is delivered to the third port through the first port of the two-position three-way valve 23 and discharged into the atmosphere.

[0036] Another method involves the desiccant in the second drying chamber 74 adsorbing moisture from the high-pressure gas for drying, while the desiccant in the first drying chamber 73 undergoes vacuum adsorption and regeneration. At this time, the second solenoid valve 41 and the fourth solenoid valve 71 are open, the fifth solenoid valve 24 is closed, the first port of the two-position four-way valve 72 is connected to the fourth port, and the second port of the two-position four-way valve 72 is connected to the third port. At this time, the high-pressure gas output from the first air compressor 21 of the compressed air module 2 passes through the second solenoid valve 41, the buffer storage tank 42, and the gas-liquid separator 51 for gas-liquid separation, and then is output through the first port of the two-position four-way valve 72 to the fourth port to enter the second drying chamber 74 to achieve desiccant adsorption of moisture from the high-pressure gas for drying. At this time, the heating rod in the second drying chamber 74 is not working, and then flows to the side massage air supply module 9 through the third one-way valve 76. The desiccant in the second drying tank 73 is regenerated by vacuum adsorption. The second port and the third port of the two-position three-way valve 25 are connected. Since the flow direction of the second one-way valve 75 is such that the gas can only flow from the first drying tank 73 to the side massage air supply module 9, the second air compressor 22 of the compressed air module 2 works to perform vacuuming. The heating rod in the first drying tank 73 heats the gas to a high temperature, improving the regeneration performance of the desiccant. At this time, the gas in the first drying tank 73 is drawn in by the second air compressor 22. The gas enters the second port through the fourth port of the two-position four-way valve 42 and is then drawn into the second air compressor 22. At this time, it is delivered to the third port through the first port of the two-position three-way valve 23 and discharged into the atmosphere.

[0037] In some embodiments, the detection module 8 integrates a temperature sensor, a pressure sensor, and a humidity sensor. The detection module 8 is used to detect the saturation level of the desiccant in the first drying barrel 73 and the second drying barrel 74, 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 72.

[0038] In some embodiments, the side massage air supply module 9 includes a side massage air supply interface 91, which is connected to the output port of the drying and adsorption module 7 to supply air to the massage armrests and other parts inside the vehicle.

[0039] The working process of the central air supply device 100 for vacuum adsorption desiccant regeneration is as follows: External air first undergoes preliminary filtration through the first air filter 11 in the air filtration module 1; the clean air is then sent to the air compression module 2 for compression. The compressed high-pressure gas can enter the air suspension supply module 3 through the opening of the first solenoid valve 31, where it is further dried by the dryer 32 before being supplied to the vehicle's air suspension system; another path allows it to enter the buffer storage tank 42 of the buffer storage module 4 through the opening of the second solenoid valve 41 for temporary storage to balance system pressure fluctuations. Subsequently, the gas in the buffer tank enters the gas-liquid separation module 5, where liquid water is separated and discharged by the gas-liquid separator 51, completing preliminary dehumidification; the gas after gas-liquid separation can then enter the external air supply module 6 through the opening of the third solenoid valve 61 to supply air to the outside. One route supplies air to the tools and equipment; another route allows air to enter the drying and adsorption module 7 for deep drying by opening the fourth solenoid valve 71. The drying and adsorption module 7 is equipped with a first drying tank 73 and a second drying tank 74, which work alternately. One drying tank is in the adsorption and drying state: humid gas enters the drying tank through the two-position four-way valve 72, where the desiccant adsorbs moisture, and the resulting dry gas is delivered to the side massage air supply module 9 through a one-way valve to supply air to the seat airbags; the other drying tank is simultaneously in the regeneration state: when the detection module 8 detects that the desiccant in the tank is saturated, the system automatically switches the valve group; at this time, the second two-stage compressor 22 in the air compression module 2 switches to vacuum mode, closes the fifth solenoid valve 24, extracts the humid air in the drying tank and discharges it to the atmosphere, and the heating rod in the drying tank is activated to heat the desiccant to improve the regeneration efficiency.

[0040] This utility model's central air supply device 100 for vacuum adsorption desiccant regeneration integrates air filtration, compression, buffering, gas-liquid separation, drying adsorption, detection, and multi-channel air supply into one compact unit, facilitating installation and maintenance. It employs a combination of vacuum adsorption and heating to achieve efficient desiccant regeneration, allowing for alternating operation without system shutdown to ensure continuous air supply. Simultaneously, it meets various air requirements such as air suspension, external tool air supply, and side-massage, making it widely applicable. A detection module monitors the gas state and desiccant saturation in real time, automatically switching the regeneration process to enhance system automation and reliability.

[0041] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A central gas supply device for vacuum adsorption desiccant regeneration, characterized in that, It includes an air filtration module, an air compression module connected to the air filtration module, an air suspension air supply module, a drying and adsorption module, a detection module, and a side massage air supply module, all of which are connected to the air compression module. The drying and adsorption module is used to achieve desiccant adsorption of moisture in high-pressure gas for drying and desiccant regeneration through vacuum adsorption; the detection module is used to detect the temperature, pressure and humidity of the gas to identify the saturation level of the desiccant; the side-wing massage air supply module is connected to the output port of the drying and adsorption module; the drying and adsorption module includes a first drying tank and a second drying tank arranged in parallel, and both the first drying tank and the second drying tank are equipped with desiccant and heating rods; the first drying tank and the second drying tank work alternately, and when one drying tank performs the adsorption drying function, the other drying tank simultaneously performs a regeneration process combining vacuuming and heating.

2. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 1, characterized in that, The central gas supply device also includes an air-suspended gas supply module and a buffer gas storage module connected to the air compression module, a gas-liquid separation module connected to the buffer gas storage module, and an external gas supply module connected to the gas-liquid separation module.

3. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 2, characterized in that, The first output terminal of the air compression module is connected to the input terminal of the air suspension air supply module, and the first output terminal of the air compression module is connected to the input terminal of the buffer air storage module; the output terminal of the buffer air storage module is connected to the input terminal of the gas-liquid separation module, and the first output terminal of the gas-liquid separation module is connected to the input terminal of the external air supply module; the second output terminal of the gas-liquid separation module is connected to the first input terminal of the drying adsorption module, and the first output terminal of the drying adsorption module is connected to the input terminal of the side massage air supply module; the output terminal of the detection module is connected to the second input terminal of the drying adsorption module, and the second output terminal of the drying adsorption module is connected to the second input terminal of the air compression module, for vacuuming and reverse regenerating the desiccant in the drying adsorption module.

4. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 2, characterized in that, The drying and adsorption module further includes a fourth solenoid valve, a two-position four-way valve, a second one-way valve, and a third one-way valve; the first port of the two-position four-way valve is connected to the fourth solenoid valve, the second port is connected to the second two-stage compressor of the air compression module, the third port is connected to one end of the first drying barrel, and the fourth port is connected to one end of the second drying barrel. The second one-way valve is connected to the other end of the first drying barrel, and its flow direction is such that gas can only flow from the first drying barrel to the side massage air supply module; The third one-way valve is connected to the other end of the second drying barrel, and its flow direction is such that gas can only flow from the second drying barrel to the side massage air supply module.

5. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 4, characterized in that, The air compression module includes a first two-stage compressor and a second two-stage compressor; the first two-stage compressor and the second two-stage compressor are connected in parallel, and the second input end of the second two-stage compressor is connected to the second port of the two-position four-way valve of the drying adsorption module for evacuating the first drying barrel or the second drying barrel.

6. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 5, characterized in that, A fifth solenoid valve is provided between the second two-stage compressor and the air filter module; when the fifth solenoid valve is closed, the second two-stage compressor is used to perform vacuuming and reverse regeneration of the desiccant in the drying adsorption module.

7. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 5, characterized in that, A two-position three-way valve is also provided at the output port of the second two-stage compressor. The first port of the two-position three-way valve is connected to the output end of the second two-stage compressor, the second port is connected to the input end of the air-suspension gas supply module and the buffer gas storage module, and the third port is connected to the outside atmosphere. When the first port and the third port of the two-position three-way valve are connected, the second two-stage compressor discharges the gas it draws into the atmosphere.

8. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 1, characterized in that, The detection module integrates a temperature sensor, a pressure sensor, and a humidity sensor, which are used to detect the saturation level of the desiccant in the first drying barrel and the second drying barrel, respectively.

9. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 1, characterized in that, The air filtration module includes a first air filter, the input of which is connected to the outside air, and the output of which is connected to the air compression module.

10. The central gas supply device for vacuum adsorption desiccant regeneration according to claim 2, characterized in that, The buffer gas storage module includes a second solenoid valve, a buffer gas storage tank, and a second pressure sensor.

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