A continuous drying and dehumidification device and its operation method based on photosensitive catalytic hydrogel.

Abstract

This invention discloses a continuous drying and dehumidification device and its operation method based on photosensitive catalytic hydrogel, belonging to the field of air dehumidification and ventilation technology. The device includes an air purification unit, an air supply unit, two sets of heat exchange units, two sets of adsorption heat exchange units, a regeneration unit, and an airflow switching unit. The two sets of heat exchange units are connected in series with their corresponding adsorption heat exchange units to form parallel dual air treatment channels, each forming an independent closed-loop working fluid circulation loop. This invention employs an alternating operating mode of one channel for condensation pre-cooling and hydrogel adsorption deep dehumidification, and another channel for heat pump auxiliary heating and ultraviolet photosensitive catalytic in-situ regeneration, switching operating conditions periodically. It uses a titanium dioxide photosensitive catalyst combined with polyacrylamide-based lithium chloride hydrogel to replace traditional electric heating regeneration, significantly reducing energy consumption. This invention combines the advantages of condensation dehumidification and adsorption dehumidification, enabling continuous and uninterrupted deep dehumidification of large volumes of high-humidity air. It features a simple structure, requires no complex moving parts, operates stably, has high energy efficiency, and is suitable for various drying, dehumidification, and moisture-proof scenarios.

Description

Technical Field

[0001] This invention relates to the field of air dehumidification and ventilation technology, and in particular to a continuous drying and dehumidification device and its operation method based on photosensitive catalytic hydrogel. Background Technology

[0002] Air dehumidification is an indispensable technical process in many fields such as industrial production, warehousing and logistics, medical and health care, and civil buildings. In high humidity environments, not only will products become damp and deteriorate, and equipment be corroded and damaged, but human comfort and health will also be affected.

[0003] Currently, the mainstream dehumidification technologies on the market mainly fall into two categories: condensation dehumidification and adsorption dehumidification. Traditional condensation dehumidification equipment lowers the air temperature to cause water vapor to condense and precipitate. Although the technology is mature, it has drawbacks such as high energy consumption, low dehumidification efficiency at low temperatures, and difficulty in achieving deep dehumidification. Furthermore, it cannot effectively handle large volumes of high-humidity air. Adsorption dehumidification technology uses adsorbent materials to adsorb water vapor from the air, achieving deep dehumidification. However, the adsorbent materials need to be regenerated periodically. Traditional electric heating regeneration methods are extremely energy-intensive, and the dehumidification system needs to be shut down during regeneration, making continuous dehumidification impossible.

[0004] In addition, most existing dehumidification systems contain complex components such as four-way reversing valves and compressors, resulting in high maintenance costs and difficulty in long-term stable operation in various general scenarios.

[0005] To address the issue of continuous dehumidification, rotary dehumidifiers have emerged as a technological advancement, using the rotation of a rotor to continuously switch between the adsorption and regeneration zones. However, rotary dehumidifiers have a complex structure, including multiple moving parts such as a motor, reduction gear, and sealing devices, resulting in high maintenance costs. Furthermore, inadequate sealing can lead to decreased dehumidification efficiency. In addition, rotary dehumidifiers still rely on electric heating for regeneration, making energy consumption a significant concern. Summary of the Invention

[0006] The purpose of this invention is to provide a continuous drying and dehumidification device and its operation method based on photosensitive catalytic hydrogel. This invention aims to solve the problems of high energy consumption, complex structure, and difficulty in achieving continuous dehumidification and handling large volumes of high-humidity air in existing dehumidification equipment. The device uses ultraviolet photocatalytic regeneration instead of traditional electric heating regeneration, significantly reducing energy consumption. Continuous dehumidification is achieved through the alternating operation of two parallel channels. Deep dehumidification is accomplished by combining condensation dehumidification and adsorption dehumidification, enabling the handling of large volumes of high-humidity air. The system has a simple structure, stable operation, and high overall energy utilization efficiency.

[0007] To achieve the above-mentioned technical features, the objective of this invention is as follows: The first aspect of the present invention provides a continuous drying and dehumidification device based on photosensitive catalytic hydrogel, comprising an air purification unit, an air supply unit, a first heat exchange unit, a second heat exchange unit, a first adsorption heat exchange unit, a second adsorption heat exchange unit, a first regeneration unit, a second regeneration unit, and an airflow switching unit. The first heat exchange unit and the first adsorption heat exchange unit are connected in series to form a first air treatment channel, and the second heat exchange unit and the second adsorption heat exchange unit are connected in series to form a second air treatment channel. The first air treatment channel and the second air treatment channel are connected in parallel between the outlet of the air supply unit and the space to be treated. Both the first and second heat exchange units have a bidirectional switching function between cooling and heating modes. The airflow switching unit is connected to the outlet of the first air handling channel, the outlet of the second air handling channel, the inlet of the air purification unit, and the space to be treated, respectively, and is used to control the air output from the first air handling channel and the second air handling channel to be selectively sent into the space to be treated or returned to the inlet of the air purification unit. The first regeneration unit is configured to correspond to the first adsorption heat exchange unit, and the second regeneration unit is configured to correspond to the second adsorption heat exchange unit, respectively for in-situ regeneration of the first adsorption heat exchange unit and the second adsorption heat exchange unit. The inlet of the air purification unit is also connected to the return air outlet of the space to be treated, and the outlet of the air purification unit is connected to the inlet of the supply air unit.

[0008] Preferably, the outer surfaces of the first adsorption heat exchange unit and the second adsorption heat exchange unit are coated with a hydrogel coating containing a photosensitive catalyst; the first regeneration unit and the second regeneration unit are both ultraviolet lamp groups, used to provide ultraviolet light source to trigger the photosensitive catalytic reaction and accelerate the desorption of adsorbed substances in the hydrogel coating.

[0009] Preferably, the hydrogel coating uses polyacrylamide as a matrix and is loaded with lithium chloride as a hygroscopic agent, and the photosensitive catalyst is titanium dioxide nanoparticles; both the first adsorption heat exchange unit and the second adsorption heat exchange unit are composed of metal pipes and fins, and the hydrogel coating is uniformly coated on the outer surface of the metal pipes and fins with thermally conductive adhesive.

[0010] Preferably, the working fluid outlet of the first heat exchange unit is connected to the working fluid inlet of the first adsorption heat exchange unit, and the working fluid outlet of the first adsorption heat exchange unit is connected to the working fluid inlet of the first heat exchange unit, forming a first closed working fluid circulation loop. The working fluid outlet of the second heat exchange unit is connected to the working fluid inlet of the second adsorption heat exchange unit, and the working fluid outlet of the second adsorption heat exchange unit is connected to the working fluid inlet of the second heat exchange unit, forming a second closed working fluid circulation loop.

[0011] Preferably, the airflow switching unit includes a first switching valve, a second switching valve, a third switching valve, and a fourth switching valve; The inlets of the first and third switching valves are both connected to the outlet of the first air handling channel, and the inlets of the second and fourth switching valves are both connected to the outlet of the second air handling channel. The outlets of the third and fourth switching valves are both connected to the space to be treated, and the outlets of the first and second switching valves are both connected to the inlet of the air purification unit.

[0012] Preferably, it also includes a control system, which is electrically connected to the air supply unit, the first heat exchange unit, the second heat exchange unit, the first regeneration unit, the second regeneration unit, and the airflow switching unit, respectively, and is used to automatically control the operating status and mode switching of each component; the air purification unit is a composite filter, which includes a particulate matter filtration layer and an organic gas adsorption layer.

[0013] A second aspect of the present invention provides a continuous air handling method, employing the aforementioned continuous air handling apparatus, comprising the following steps: S1: The return air and recirculated air in the space to be treated are mixed and then enter the air purification unit for purification. S2: The purified air is pressurized by the air supply unit and divided into two paths, which enter the first air handling channel and the second air handling channel respectively. S3: Controls the first and second air handling channels to alternate between processing and regeneration modes, wherein: The channel operating in the processing mode: the corresponding heat exchange unit operates in the cooling mode to pre-treat the air by cooling, and then the air enters the corresponding adsorption heat exchange unit to adsorb the target substances in the air to form processed air, which is then sent into the space to be processed through the airflow switching unit. Channels operating in regeneration mode: The corresponding heat exchange unit operates in heating mode to heat the air, and then the air enters the corresponding adsorption heat exchange unit. At the same time, the corresponding regeneration unit is activated to desorb the target substance adsorbed in the adsorption heat exchange unit. The air containing the target substance returns to the inlet of the air purification unit through the airflow switching unit. S4: After running for a preset time, switch the working mode of the two air handling channels, so that the original handling channel enters the regeneration mode and the original regeneration channel enters the handling mode. S5: Repeat steps S3 and S4 to achieve continuous and uninterrupted air treatment.

[0014] Preferably, the target substance is water vapor, and the air treatment is dehumidification treatment; in the treatment mode, the heat exchange unit cools the air to 15℃-20℃, causing some of the water vapor in the air to condense and precipitate; in the regeneration mode, the heat exchange unit heats the air to 30℃-40℃, improving the air's moisture carrying capacity.

[0015] Preferably, the preset time mentioned in step S4 is 1 hour to 3 hours; when the relative humidity of the space to be processed is higher than the first threshold, the system starts up and runs at full power; when the relative humidity of the space to be processed is lower than the second threshold, the system reduces its operating power or enters standby mode. The first threshold is 60%-70%, and the second threshold is 25%-35%.

[0016] Preferably, the regeneration unit is an ultraviolet lamp assembly, and the outer surface of the adsorption heat exchange unit is coated with a hydrogel coating containing a photosensitive catalyst. In regeneration mode, the corresponding ultraviolet lamp assembly is turned on to emit ultraviolet light to irradiate the hydrogel coating, triggering a photosensitive catalytic reaction to accelerate the desorption of water vapor adsorbed in the hydrogel.

[0017] The present invention has the following beneficial effects: 1. This invention uses ultraviolet photocatalytic regeneration technology to replace traditional electric heating regeneration technology. It utilizes photosensitive catalytic reaction to accelerate moisture desorption, significantly reducing regeneration energy consumption. Simultaneously, the heat generated by the heat exchange unit in both cooling and heating modes is fully utilized. The cooling energy generated during cooling is used for pre-dehumidification, and the heat generated during heating is used to assist regeneration, resulting in a significant improvement in the overall energy utilization efficiency of the system.

[0018] 2. This invention uses two parallel channels to operate alternately, so that one channel is always outputting dry air, with no downtime for regeneration. This can meet the needs of scenarios with extremely high requirements for continuous dehumidification, such as industrial production, precision instrument storage, and medical and health care, and can operate stably 24 hours a day without interruption.

[0019] 3. This invention employs a condensation-adsorption composite dehumidification technology, which can stably control the relative humidity of the air between 20% and 30%, achieving a dehumidification depth far superior to traditional condensation dehumidification systems. Simultaneously, the system can handle large volumes of high-humidity air and is adaptable to spaces of varying sizes.

[0020] 4. This invention eliminates the complex moving parts such as motors, reduction gears, and sealing devices found in rotary dehumidifiers. All major components are static, ensuring stable and reliable operation, low failure rate, and low maintenance costs. The modular design of the system facilitates installation, disassembly, and maintenance.

[0021] 5. This invention is equipped with an intelligent control system that can monitor the humidity of the space to be treated in real time and automatically control the system's start-up, shutdown, operating power, and mode switching without manual intervention. Simultaneously, the system has self-diagnosis and alarm functions, facilitating timely fault detection and troubleshooting.

[0022] 6. The pre-air purification unit of this invention adopts composite filtration technology, which can remove particulate matter and organic pollutants in the air at the same time, improve indoor air quality while dehumidifying, and realize multiple functions in one machine. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a system diagram of the present invention.

[0025] Figure 2 This is a schematic diagram of the upper channel dehumidification and lower channel regeneration mode of the present invention.

[0026] Figure 3 This is a diagram illustrating the lower channel dehumidification and upper channel regeneration mode of the present invention.

[0027] In the diagram: Air purification unit 1, air supply unit 2, first heat exchange unit 3, second heat exchange unit 4, first adsorption heat exchange unit 5, second adsorption heat exchange unit 6, first switching valve V1, second switching valve V2, third switching valve V3, and fourth switching valve V4. Detailed Implementation

[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. This example is implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0029] Example 1 like Figure 1 As shown, a continuous drying and dehumidification device based on photosensitive catalytic hydrogel includes: an air purification unit 1, an air supply unit 2, a first heat exchange unit 3, a second heat exchange unit 4, a first adsorption heat exchange unit 5, a second adsorption heat exchange unit 6, a first regeneration unit, a second regeneration unit, and an airflow switching unit core component.

[0030] in: Air purification unit 1: It adopts an air filter as the system filtration component, which is used to intercept large dust particles in the air, adsorb organic pollutants, purify the air to be treated, and avoid impurities from affecting the operating efficiency of subsequent components.

[0031] Air supply unit 2: It adopts a circulating fan as the power component for air supply in the system, providing stable airflow power for air circulation, driving air to flow orderly between various components, and ensuring the smooth operation of dehumidification and regeneration processes.

[0032] Both the first heat exchange unit 3 and the second heat exchange unit 4 employ dual-effect heat pumps as heat exchange components. Internally, they contain a heat exchange working fluid flow channel and an external air handling channel. By adjusting the working fluid flow direction, they can achieve both cooling and heating functions. In dehumidification mode, they act as evaporators to cool and pre-dehumidify the air, reducing its moisture content. In regeneration mode, they act as condensers to heat the air, providing auxiliary heat for the desorption of moisture in the adsorption heat exchange unit. The first adsorption heat exchange unit 5 and the second adsorption heat exchange unit 6 both employ photosensitive catalytic hydrogel heat exchangers, serving as dehumidification and regeneration components. Their outer surfaces are coated with a hydrogel coating containing a photosensitive catalyst. During the dehumidification stage, the hydrogel efficiently adsorbs water vapor from the air; during the regeneration stage, the corresponding regeneration unit triggers a photosensitive catalytic reaction, accelerating the desorption of water from the hydrogel and achieving rapid regeneration. The first regeneration unit and the second regeneration unit are both ultraviolet lamp groups, which are arranged in conjunction with the two adsorption heat exchange units to provide ultraviolet light sources for the photosensitive catalytic reaction. They are only turned on when the corresponding channel enters the regeneration mode to save energy. Airflow switching unit: Composed of first switching valve V1, second switching valve V2, third switching valve V3 and fourth switching valve V4, used to control the direction of the air channel and realize the switching between dehumidified air output and regenerated humidified air return; wherein the third switching valve V3 and the fourth switching valve V4 are dehumidified air output valves, and the first switching valve V1 and the second switching valve V2 are regenerated humidified air return valves.

[0033] The connection relationships between the components in this embodiment system are as follows: The system consists of two independent closed-loop working fluid circulation loops and an air distribution and supply system. First closed working fluid circulation loop: The two ends of the first heat exchange unit 3 are directly connected to the two ends of the first adsorption heat exchange unit 5 to form an independent closed loop. The working fluid circulates in the loop to realize the transfer of heat between the first heat exchange unit 3 and the first adsorption heat exchange unit 5. Second closed working fluid circulation loop: The two ends of the second heat exchange unit 4 are directly connected to the two ends of the second adsorption heat exchange unit 6 to form an independent closed loop. The working fluid circulation flow realizes the transfer of heat between the second heat exchange unit 4 and the second adsorption heat exchange unit 6. Air distribution and supply system: includes a first air handling duct and a second air handling duct, with the specific connection path as follows: First air handling channel: upper branch of the outlet of air supply unit 2 → external air channel of first heat exchange unit 3 → external air channel of first adsorption heat exchange unit 5 → first switching valve V1 / second switching valve V2; Second air handling channel: Lower branch of air supply unit 2 outlet → External air channel of second heat exchange unit 4 → External air channel of second adsorption heat exchange unit 6 → Third switching valve V3 / Fourth switching valve V4. The outlets of the second switching valve V2 and the fourth switching valve V4 are combined and then introduced into the space to be dehumidified; the outlets of the first switching valve V1 and the third switching valve V3 are combined and then connected to the inlet of the air purification unit 1. The inlet of the air purification unit 1 is also connected to the return air of the space to be dehumidified, and the outlet of the air purification unit 1 is connected to the inlet of the air supply unit 2, forming a complete air circulation loop.

[0034] The system operation method in this embodiment is as follows: This device achieves continuous dehumidification through alternating operation of two modes. The core mechanism involves a switching between two channels: one for dehumidification and the other for regeneration. The two modes are switched periodically, with a recommended switching cycle of 2 hours, ensuring that one channel is always dehumidifying for continuous drying. The specific operating procedure is as follows: Mode 1: Dehumidification in the first air handling duct, regeneration in the second air handling duct Valve status: Second switching valve V2 and third switching valve V3 are open; first switching valve V1 and fourth switching valve V4 are closed. Heat exchange unit mode: The first heat exchange unit 3 is in cooling mode, and the second heat exchange unit 4 is in heating mode; Regeneration unit status: The second regeneration unit, which is paired with the second adsorption heat exchange unit 6, is turned on, and the first regeneration unit, which is paired with the first adsorption heat exchange unit 5, is turned off; Air purification and distribution: The return air from the space to be dehumidified enters the air purification unit 1 for purification, and is then pressurized by the air supply unit 2 and divided into upper and lower paths. Dehumidification in the first air handling channel: Air enters the first heat exchange unit 3, where it is cooled and initially separated into water; then it enters the first adsorption heat exchange unit 5, where the hydrogel adsorbs the remaining moisture to form dry air; the dry air is then sent into the space to be dehumidified via the third switching valve V3. Second air handling channel regeneration: Air enters the second heat exchange unit 4 and is heated; then it enters the second adsorption heat exchange unit 6, while the second regeneration unit emits ultraviolet light to irradiate and desorb the water adsorbed in the hydrogel; the humid air returns to the inlet of the air purification unit 1 through the third switching valve V3, completing the regeneration cycle.

[0035] Mode 2: Dehumidification in the second air handling duct, regeneration in the first air handling duct. Valve status: First switching valve V1 and fourth switching valve V4 are open; second switching valve V2 and third switching valve V3 are closed. Heat exchange unit mode: The second heat exchange unit 4 is in cooling mode, and the first heat exchange unit 3 is in heating mode; Regeneration unit status: The first regeneration unit, which is paired with the first adsorption heat exchange unit 5, is turned on; the second regeneration unit, which is paired with the second adsorption heat exchange unit 6, is turned off. Air purification and distribution: The return air from the space to be dehumidified enters the air purification unit 1 for purification, and is then pressurized by the air supply unit 2 and divided into upper and lower paths. Dehumidification in the second air handling channel: Air enters the second heat exchange unit 4 and is cooled and pre-dehumidified; then it enters the second adsorption heat exchange unit 6, where the hydrogel adsorbs moisture to form dry air; the dry air is sent into the space to be dehumidified via the fourth switching valve V4. First air treatment channel regeneration: Air enters the first heat exchange unit 3 and is heated; then it enters the first adsorption heat exchange unit 5, where the first regeneration unit emits ultraviolet light to desorb moisture from the hydrogel; the humid air returns to the inlet of the air purification unit 1 through the first switching valve V1, completing the regeneration cycle.

[0036] Example 2: See Figure 2-3 The invention will now be further explained in conjunction with its operation.

[0037] Mode 1 operation: Dehumidification in the first air handling section + regeneration in the second air handling section When the humidity of the space to be dehumidified is >60%, the system starts in mode one: the second switching valve V2 and the third switching valve V3 are open, and the first switching valve V1 and the fourth switching valve V4 are closed; the first heat exchange unit 3 is in cooling mode, and the second heat exchange unit 4 is in heating mode; the second regeneration unit, which is matched with the second adsorption heat exchange unit 6, is activated. The high-humidity air in the space to be dehumidified, with a humidity of 75% and a temperature of 28℃, enters the air purification unit 1 as return air. After filtration, the dust concentration is reduced to below 0.1mg / m³; the purified air is pressurized by the air supply unit 2 and then distributed to: First air handling channel: Air enters the first heat exchange unit 3 and is cooled to 18°C. Water is initially separated, and the moisture content drops from 18g / kg to 12g / kg. Air then enters the first adsorption heat exchange unit 5. After the hydrogel adsorbs the air, the humidity drops to 25%. The air is then sent to the space to be dehumidified through the second switching valve V2, so that the humidity of the space gradually decreases. Second air handling channel: Air enters the second heat exchange unit 4 and is heated to 35°C, and the relative humidity drops to 35% → enters the second adsorption heat exchange unit 6. Under the irradiation of the second regeneration unit, the hydrogel desorbs moisture, and the air humidity rises to 80% → returns to the air purification unit 1 through the third switching valve V3, completing the cycle.

[0038] Mode 2 operation: Dehumidification in the second air handling duct + regeneration in the first air handling duct After running in Mode 1 for 2 hours, the system automatically switches to Mode 2: the first switching valve V1 and the fourth switching valve V4 open, and the second switching valve V2 and the third switching valve V3 close; the second heat exchange unit 4 is in cooling mode, and the first heat exchange unit 3 is in heating mode; the first regeneration unit, which is paired with the first adsorption heat exchange unit 5, is activated. The purified air is pressurized by the air supply unit 2 and then distributed to different paths. Second air handling channel: Air enters the second heat exchange unit 4 and is cooled to 17°C, with the moisture content reduced to 11g / kg → enters the second adsorption heat exchange unit 6 and is adsorbed, with the humidity reduced to 22% → is sent into the space to be dehumidified through the fourth switching valve V4, maintaining the humidity of the space at a stable level of 25%-30%; First air handling channel: Air enters the first heat exchange unit 3 and is heated to 36°C → enters the first adsorption heat exchange unit 5. Under the irradiation of the first regeneration unit, the hydrogel desorbs moisture, and the high-humidity air returns to the air purification unit 1 through the first switching valve V1, completing the cycle.

[0039] Example 3: This embodiment provides a specific implementation method for hydrogel coating: Both the first adsorption heat exchange unit 5 and the second adsorption heat exchange unit 6 are composed of metal pipes and fins. A hydrogel coating is uniformly applied to the outer surface of the metal pipes and fins using thermally conductive adhesive. The hydrogel coating uses polyacrylamide as a matrix, loaded with lithium chloride as a hygroscopic agent, and titanium dioxide nanoparticles as a photosensitive catalyst. The preparation process is as follows: acrylamide monomer, crosslinking agent N,N'-methylenebisacrylamide, lithium chloride, and titanium dioxide nanoparticles are mixed uniformly at a mass ratio of 100:0.5:30:5. Ammonium persulfate initiator and tetramethylethylenediamine accelerator are added, and polymerization is carried out at room temperature to form a hydrogel. Then, the hydrogel is mixed uniformly with thermally conductive adhesive at a mass ratio of 1:1, coated onto the surface of the heat exchanger, and dried at 60°C for 2 hours.

[0040] Although the present invention has been described in detail through the foregoing embodiments, those skilled in the art can make changes and modifications to the implementation methods without departing from the core spirit of the invention. All such changes and modifications fall within the scope of protection defined by the appended claims.

Claims

1. A continuous drying and dehumidification device based on photosensitive catalytic hydrogel, characterized in that, It includes an air purification unit (1), an air supply unit (2), a first heat exchange unit (3), a second heat exchange unit (4), a first adsorption heat exchange unit (5), a second adsorption heat exchange unit (6), a first regeneration unit, a second regeneration unit, and an airflow switching unit; The first heat exchange unit (3) and the first adsorption heat exchange unit (5) are connected in series to form a first air treatment channel, and the second heat exchange unit (4) and the second adsorption heat exchange unit (6) are connected in series to form a second air treatment channel. The first air treatment channel and the second air treatment channel are connected in parallel between the outlet of the air supply unit (2) and the space to be treated. Both the first heat exchange unit (3) and the second heat exchange unit (4) have a bidirectional switching function between cooling mode and heating mode; The airflow switching unit is connected to the outlet of the first air handling channel, the outlet of the second air handling channel, the inlet of the air purification unit (1), and the space to be treated, respectively, and is used to control the air output from the first air handling channel and the second air handling channel to be selectively sent into the space to be treated or returned to the inlet of the air purification unit (1). The first regeneration unit is set up in correspondence with the first adsorption heat exchange unit (5), and the second regeneration unit is set up in correspondence with the second adsorption heat exchange unit (6), for performing in-situ regeneration treatment on the first adsorption heat exchange unit (5) and the second adsorption heat exchange unit (6) respectively. The inlet of the air purification unit (1) is also connected to the return air outlet of the space to be treated, and the outlet of the air purification unit (1) is connected to the inlet of the air supply unit (2).

2. The continuous drying and dehumidification device according to claim 1, characterized in that, The outer surfaces of the first adsorption heat exchange unit (5) and the second adsorption heat exchange unit (6) are coated with a hydrogel coating containing a photosensitive catalyst; the first regeneration unit and the second regeneration unit are both ultraviolet lamp groups, which are used to provide ultraviolet light source to trigger photosensitive catalytic reaction and accelerate the desorption of adsorbed substances in the hydrogel coating.

3. The continuous air handling apparatus according to claim 2, characterized in that, The hydrogel coating is based on polyacrylamide and loaded with lithium chloride as a hygroscopic agent. The photosensitive catalyst is titanium dioxide nanoparticles. The first adsorption heat exchange unit (5) and the second adsorption heat exchange unit (6) are both composed of metal pipes and fins. The hydrogel coating is uniformly coated on the outer surface of the metal pipes and fins by thermally conductive adhesive.

4. The continuous air handling apparatus according to claim 1, characterized in that, The working fluid outlet of the first heat exchange unit (3) is connected to the working fluid inlet of the first adsorption heat exchange unit (5), and the working fluid outlet of the first adsorption heat exchange unit (5) is connected to the working fluid inlet of the first heat exchange unit (3), forming a first closed working fluid circulation loop. The working fluid outlet of the second heat exchange unit (4) is connected to the working fluid inlet of the second adsorption heat exchange unit (6), and the working fluid outlet of the second adsorption heat exchange unit (6) is connected to the working fluid inlet of the second heat exchange unit (4), forming a second closed working fluid circulation loop.

5. The continuous air handling apparatus according to claim 1, characterized in that, The airflow switching unit includes a first switching valve (V1), a second switching valve (V2), a third switching valve (V3), and a fourth switching valve (V4). The inlets of the first switching valve (V1) and the third switching valve (V3) are both connected to the outlet of the first air handling channel, and the inlets of the second switching valve (V2) and the fourth switching valve (V4) are both connected to the outlet of the second air handling channel. The outlets of the third switching valve (V3) and the fourth switching valve (V4) are both connected to the space to be treated, and the outlets of the first switching valve (V1) and the second switching valve (V2) are both connected to the inlet of the air purification unit (1).

6. The continuous air handling apparatus according to claim 1, characterized in that, It also includes a control system, which is electrically connected to the air supply unit (2), the first heat exchange unit (3), the second heat exchange unit (4), the first regeneration unit, the second regeneration unit and the airflow switching unit respectively, and is used to automatically control the operating status and mode switching of each component; the air purification unit (1) is a composite filter, which includes a particulate matter filter layer and an organic gas adsorption layer.

7. A continuous air handling method, employing the continuous air handling apparatus according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1: The return air and the return air of the space to be treated are mixed and then enter the air purification unit (1) for purification treatment; S2: The purified air is pressurized by the air supply unit (2) and divided into two paths, which enter the first air handling channel and the second air handling channel respectively; S3: Controls the first and second air handling channels to alternate between processing and regeneration modes, wherein: The channel operating in the processing mode: the corresponding heat exchange unit operates in the cooling mode to pre-treat the air by cooling, and then the air enters the corresponding adsorption heat exchange unit to adsorb the target substances in the air to form processed air, which is then sent into the space to be processed through the airflow switching unit. The channel working in regeneration mode: the corresponding heat exchange unit operates in heating mode to heat the air, and then the air enters the corresponding adsorption heat exchange unit. At the same time, the corresponding regeneration unit is turned on to desorb the target substance adsorbed in the adsorption heat exchange unit. The air containing the target substance returns to the inlet of the air purification unit (1) through the airflow switching unit. S4: After running for a preset time, switch the working mode of the two air handling channels, so that the original handling channel enters the regeneration mode and the original regeneration channel enters the handling mode. S5: Repeat steps S3 and S4 to achieve continuous and uninterrupted air treatment.

8. The continuous air handling method according to claim 7, characterized in that, The target substance is water vapor, and the air treatment is dehumidification treatment. In the treatment mode, the heat exchange unit cools the air to 15℃-20℃, causing some of the water vapor in the air to condense and precipitate. In the regeneration mode, the heat exchange unit heats the air to 30℃-40℃, improving the air's moisture carrying capacity.

9. The continuous air handling method according to claim 7, characterized in that, The preset time mentioned in step S4 is 1 hour to 3 hours; when the relative humidity of the space to be processed is higher than the first threshold, the system starts up and runs at full power; when the relative humidity of the space to be processed is lower than the second threshold, the system reduces the operating power or enters standby mode. The first threshold is 60%-70%, and the second threshold is 25%-35%.

10. The continuous air handling method according to claim 7, characterized in that, The regeneration unit is an ultraviolet lamp assembly, and the outer surface of the adsorption heat exchange unit is coated with a hydrogel coating containing a photosensitive catalyst. In the regeneration mode, the corresponding ultraviolet lamp assembly is turned on to emit ultraviolet light to irradiate the hydrogel coating, triggering a photosensitive catalytic reaction to accelerate the desorption of water vapor adsorbed in the hydrogel.

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