Regenerative precooling type dehumidification equipment based on multiple heat exchangers and dehumidification method

Abstract

The invention provides regenerative pre-cooling type dehumidification equipment based on multiple heat exchangers and a dehumidification method, and relates to the technical field of dehumidifiers, the regenerative pre-cooling type dehumidification equipment comprises a dehumidification mechanism arranged in a shell and used for dehumidifying air, and an air inlet end and an air outlet end are formed in the symmetrical side faces of the shell; the dehumidification mechanism comprises a pre-cooling heat exchanger, a dehumidification evaporator and a total heat recovery heat exchanger which are arranged in the shell and are sequentially arranged in the direction from the air inlet end to the air outlet end, and a circulating pressurization assembly which is arranged on the pre-cooling heat exchanger and the dehumidification evaporator and used for cooperative pressurization; the total heat recovery heat exchanger is used for recovering cold or heat in exhaust air; the pre-cooling heat exchanger and the dehumidification evaporator cooperate to dehumidify high-temperature air and low-temperature air; the circulating pressurizing assembly pressurizes the interiors of the pre-cooling heat exchanger and the dehumidification evaporator and is used for increasing the air pressure intensity. The problems that the dehumidification effect fluctuation is large and the dehumidification depth is insufficient in different environments in a traditional dehumidification technology are effectively solved, and the dehumidification efficiency and quality are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidifiers, and specifically to a heat recovery and precooling type dehumidification device and method based on multiple heat exchangers. Background Art

[0002] In many fields such as industrial production, commercial buildings, and civil residences, there are high requirements for air humidity control. A high-humidity environment not only affects the comfort of the human body but may also cause damage to production equipment, products, and building structures. Among them, in an electronic equipment production workshop, a high-humidity environment may cause electronic components to be damp and short-circuited, affecting product quality; in places such as museums and archives, high humidity will accelerate the damage of cultural relics and archives. Therefore, dehumidification devices have a wide range of application requirements in these fields.

[0003] Traditional dehumidification devices usually adopt a single dehumidification method, such as cooling dehumidification. Its principle is to cool the air below the dew point temperature by using a refrigeration system, so that the water vapor in the air condenses into liquid water and is discharged, thereby achieving dehumidification. However, this dehumidification method has some obvious disadvantages: 1. High energy consumption: Cooling dehumidification requires cooling the air to a relatively low temperature, which requires a large amount of electrical energy to drive the refrigeration system, resulting in a relatively high operating cost.

[0004] 2. The dehumidification efficiency is greatly affected by the ambient temperature: In a high-temperature and high-humidity environment, the effect of cooling dehumidification will be limited to a certain extent because more energy is required to reach a lower dew point temperature, and the efficiency of the refrigeration system will also decrease.

[0005] 3. The heat during the dehumidification process cannot be fully utilized: During the cooling dehumidification process, the heat in the air is directly discharged into the environment without being effectively recovered and utilized, resulting in a waste of energy.

[0006] Although some heat recovery and precooling type dehumidification devices have appeared in the market, attempting to solve some problems of traditional dehumidification technologies, these devices still have deficiencies in terms of structure and dehumidification methods. However, the dehumidification effect of existing heat recovery and precooling type dehumidification devices will fluctuate with changes in ambient temperature and humidity. In a high-temperature and high-humidity environment, to achieve an ideal dehumidification effect, the refrigeration system needs to bear a greater load, the operating efficiency decreases, and the dehumidification efficiency drops. In some places with extremely high humidity requirements, such as precision instrument manufacturing workshops and electronic chip production factories, existing dehumidification technologies are difficult to meet their strict humidity control requirements. Even if the device operates for a long time, it is difficult to reduce the air humidity to the required extremely low level, thereby affecting product quality and the stability of the production process. Summary of the Invention

[0007] In view of the above problems, the present application provides a heat recovery and precooling type dehumidification device and method based on multiple heat exchangers.

[0008] To achieve the above object, the present invention provides the following technical solution: A heat recovery pre-cooling type dehumidification device based on multiple heat exchangers, including a housing and a dehumidification mechanism disposed in the housing for dehumidifying air. It is characterized in that an air inlet end and an air outlet end are provided on the symmetrical sides of the housing. The dehumidification mechanism includes a pre-cooling heat exchanger, a dehumidification evaporator, a total heat recovery heat exchanger sequentially arranged in the housing along the direction from the air inlet end to the air outlet end, and a circulating pressurization component disposed on the pre-cooling heat exchanger and the dehumidification evaporator for collaborative pressurization; the total heat recovery heat exchanger is used to recover the cold or heat in the exhaust air; The pre-cooling heat exchanger and the dehumidification evaporator cooperate to process high and low temperature air for dehumidification; the circulating pressurization component pressurizes the inside of the pre-cooling heat exchanger and the dehumidification evaporator to increase the air pressure; When the air temperature is greater than 28 °C, the pre-cooling heat exchanger operates to pre-cool the air, and then the dehumidification evaporator dehumidifies the pre-cooled air; when the air temperature is less than or equal to 28 °C, the pre-cooling heat exchanger stops operating, and the air passes through the pre-cooling heat exchanger and enters the dehumidification evaporator for dehumidification.

[0009] Preferably, the dehumidification mechanism further includes a primary condensation heat exchanger, a secondary sub-cooling heat exchanger and a compressor disposed in the housing. The primary condensation heat exchanger is used to dissipate heat from the high-temperature and high-pressure refrigerant compressed by the compressor to condense it into a liquid state; the secondary sub-cooling heat exchanger further cools the condensed refrigerant; During the working process, the compressor controls the refrigerant to flow through the primary condensation heat exchanger and the secondary sub-cooling heat exchanger in sequence for heat dissipation and sub-cooling treatment, and cooperates with the adjustment of the electronic expansion valve to accurately flow into the pre-cooling heat exchanger and the dehumidification evaporator.

[0010] Preferably, three fixed shells are arranged in the housing between the air inlet end and the air outlet end. The adjacent ends of the three fixed shells are provided with mutually communicating treatment channels. The pre-cooling heat exchanger, the dehumidification evaporator and the total heat recovery heat exchanger are sequentially arranged in the treatment channels opened by the three fixed shells from the air inlet end to the air outlet end, and a guiding component for controlling the one-way flow of air is provided at the opening position of the treatment channel of each fixed shell. The guiding component controls the air to flow through the pre-cooling heat exchanger, the dehumidification evaporator and the total heat recovery heat exchanger in sequence from the air inlet end to the air outlet end.

[0011] Preferably, the circulating pressurization component includes two pressurization parts separately arranged on the fixed shells where the pre-cooling heat exchanger and the dehumidification evaporator are installed, and a circulating part arranged on the two fixed shells for circulating pressurization and pressure release operations. When the circulating part controls one pressurization part to pressurize the treatment channel in one fixed shell, the other pressurization part releases the pressure of the treatment channel in the other fixed shell.

[0012] Preferably, the pressurizing member comprises a pressurizing column mounted on the fixed shell in the vertical direction, a sealing disk slidably and sealedly penetrated in the pressurizing groove, and a driving rod with a bottom end vertically penetrating through the top of the pressurizing column in the pressurizing groove and connected to the sealing disk; a pressurizing groove is provided at the bottom end of the pressurizing column, and the pressurizing groove is connected to the processing channel in the fixed shell; During the operation, the circulation part controls the two driving rods to move synchronously in opposite directions along the rod body. When one driving rod drives the sealing disk to move to the bottom of the pressurized groove, the corresponding processing channel in the fixed shell is pressurized; at the same time, the other driving rod drives the sealing disk to move to the top of the pressurized groove, and the corresponding processing channel in the fixed shell is depressurized.

[0013] Preferably, the circulating part includes a fixed rod arranged on the fixed shell in the vertical direction and located between the two driving rods, a rotating rod connected to the top of the fixed rod by rotating in the middle of the rod body, two sliding blocks respectively slidably penetrated into sliding grooves opened in the rod body along the length direction at both ends of the rotating rod, and a circulating driving structure arranged on the fixed shell and controlling one end of the rotating rod to swing up and down in a cycle, the two sliding blocks are respectively fixedly arranged on the tops of different driving rods, and a limiting block is fixedly arranged on the side of each sliding block; the limiting block is slidably penetrated into the limiting groove opened in the wall of the sliding groove.

[0014] Preferably, the circulating drive structure includes a transmission rod arranged in the vertical direction and rotatably connected to the rotating rod body at the top, which is deviated from the middle position, and a driving motor arranged on a fixed shell and provided with a rotating disk at the output end, and the end face of the rotating disk is rotatably connected to the bottom end of the transmission rod deviating from the center position.

[0015] A heat recovery precooling dehumidification method based on multiple heat exchangers comprises the following steps: S: Air introduction: Start the dehumidification equipment, the outside air enters the dehumidification equipment through the air inlet, and the air temperature is detected. Under the guidance of the air flow path, it flows to the processing channel of the subsequent fixed shell in sequence; S2: Precooling stage: When the air temperature is greater than 28°C, the precooling heat exchanger starts, and the air enters the fixed shell processing channel equipped with the precooling heat exchanger, exchanges heat with the precooling heat exchanger, lowers the air temperature, and completes the precooling process; when the air temperature is less than 28°C, the precooling heat exchanger is closed, and the air passes directly through the precooling heat exchanger; S3: Dehumidification stage: The pre-cooled air enters the fixed shell processing channel equipped with a dehumidification evaporator, exchanges heat with the dehumidification evaporator, and the water vapor in the air condenses into liquid water when it is cooled and discharged; S: Full heat recovery stage: the dehumidified air enters the fixed shell processing channel equipped with a full heat recovery heat exchanger, exchanges heat with the full heat recovery heat exchanger, and recovers part of the cold or heat in the air; S: Air exhaust: The air after full heat recovery treatment is discharged from the dehumidification equipment from the exhaust end.

[0016] Preferably, in the air introduction step, a one-way guiding structure is provided at the air inlet end and the opening position of each fixed housing treatment channel of the dehumidification device, and the one-way guiding structure only allows air to flow from the air inlet end to the air outlet end along the air flow path.

[0017] Preferably, the circulating pressurization assembly includes two pressurizing members provided on the fixed housings of the installation precooling heat exchanger and the dehumidification evaporator, and a circulating member for controlling the circulating pressurization and pressure release of the two pressurizing members; the method further includes: Circulating pressurization and pressure release step: During the process of air flowing through the fixed housing treatment channels provided with the precooling heat exchanger and the dehumidification evaporator, the circulating member controls the two pressurizing members to perform circulating pressurization and pressure release operations on the corresponding treatment channels respectively, increasing the pressure in the treatment channels.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the layout of multiple heat exchangers in this device, that is, the precooling heat exchanger, the dehumidification evaporator and the total heat recovery heat exchanger are sequentially arranged in the treatment channels of the fixed housing, the air can sequentially exchange heat with each heat exchanger along a scientific and reasonable path. The precooling heat exchanger reduces the air temperature in advance, creating favorable conditions for the efficient dehumidification of the subsequent dehumidification evaporator, greatly improving the dehumidification speed and effect. Compared with traditional dehumidification devices, this device can reduce the air humidity to the target value faster and meet the requirements of places with strict humidity requirements.

[0019] 2. The innovative design of the circulating pressurization assembly realizes the circulating pressurization and pressure release operations on the air in the treatment channels, causing strong and uniform convection of the air in the channels. This convection enhances the contact area and contact time between the air and the heat exchanger, improves the heat exchange efficiency, further optimizes the dehumidification effect, and ensures the stability and reliability of the dehumidification process. And by increasing the pressure of the air inside the treatment channels, the dehumidification effect and efficiency of the air are improved.

[0020] 3. This dehumidification method clarifies each step such as air introduction, precooling, dehumidification, total heat recovery and air discharge, forming a complete and standardized dehumidification process. By operating strictly in accordance with this process, it can ensure that the air is effectively treated at each stage, improving the dehumidification quality and efficiency. With the addition of the circulating pressurization and pressure release process, through the circulating pressurization and pressure release operations, convection is formed in the treatment channels, enhancing the heat exchange between the air and the heat exchanger. This convection can break the static layer of the air in the channels, enabling the air to come into contact with the surface of the heat exchanger more fully, improving the heat exchange efficiency, thus accelerating the dehumidification speed and improving the dehumidification effect. Description of the Drawings

[0021] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1 is a schematic diagram of a simple structure of a regenerative pre-cooling type dehumidification device based on multiple heat exchangers proposed by the present invention.

[0022] Figure 2 is a schematic diagram of the internal structure of a regenerative pre-cooling type dehumidification device based on multiple heat exchangers proposed by the present invention.

[0023] Figure 3 is a schematic diagram of the structure of the dehumidification mechanism of the present invention.

[0024] Figure 4 is a schematic diagram of one side structure of the pre-cooling heat exchanger of the present invention.

[0025] Figure 5 is a schematic diagram of the other side structure of the pre-cooling heat exchanger of the present invention.

[0026] Figure 6 is a schematic diagram of the unfolded structure of the pre-cooling heat exchanger of the present invention.

[0027] Figure 7 is Figure 6 an enlarged schematic diagram of part A of

[0028] Figure 8 is a schematic diagram of the structure of the heat exchanger body of the present invention.

[0029] Figure 9 is a schematic diagram of the structure of the circulating pressurization assembly of the present invention.

[0030] Figure 10 is a schematic diagram of the cross-sectional structure of the circulating pressurization assembly of the present invention.

[0031] In the figure: 1. housing; 2. intake air filter plate; 3. exhaust air filter plate; 4. compressor; 5. electronic expansion valve; 6. partition plate; 7. pre-cooling heat exchanger; 8. dehumidification evaporator; 9. total heat recovery heat exchanger; 12. pressurizing column; 13. driving rod; 14. fixing rod; 15. rotating rod; 16. sliding groove; 17. sliding block; 18. limiting groove; 19. limiting block; 20. water collecting block; 21. guiding plate; 22. rotating disk; 23. transmission rod; 24. intake air fan; 25. intake air plate; 26. fixed housing; 27. processing channel; 28. guiding hole; 29. sealing block; 30. limiting spring; 31. fixing block; 32. heat exchange tube; 33. heat exchange plate; 34. pressurizing groove; 35. sealing disk. Specific embodiments

[0032] In order to make the technical means, creative features, achieved purposes and effects of the present invention easily understood, the present invention will be further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention.

[0033] In various scenarios with strict humidity control requirements, the shortcomings of traditional dehumidification technologies have become increasingly prominent. On the one hand, its dehumidification effect is severely restricted by environmental factors. When in a high-temperature and high-humidity environment, in order to achieve an ideal dehumidification effect, the refrigeration system has to bear a greater operating load, which in turn causes the operating efficiency to decline and the dehumidification process to become slow. Just like in the southern regions in summer, the sultry and humid air makes traditional dehumidification equipment "fight hard" for a long time, but it is still difficult to quickly reduce the indoor humidity to a comfortable range. On the other hand, in places with extremely high humidity requirements such as precision instrument manufacturing workshops and electronic chip production factories, traditional dehumidification technologies are even more powerless. Even if the equipment runs continuously for a long time, it is difficult to accurately reduce the air humidity to the extremely low level required, which will undoubtedly have an adverse impact on product quality and the stability of the production process.

[0034] In view of the problems that occur during the use of dehumidification equipment in the above-mentioned existing technologies, the present invention proposes a heat recovery precooling type dehumidification equipment and dehumidification method based on multiple heat exchangers.

[0035] Example 1: Refer to Figures 1-10 , a heat recovery precooling type dehumidification equipment based on multiple heat exchangers, including a housing 1 and a dehumidification mechanism disposed in the housing 1 for dehumidifying air. An air inlet end and an air outlet end are provided on the symmetric sides of the housing 1. The dehumidification mechanism includes a precooling heat exchanger 7, a dehumidification evaporator 8, a total heat recovery heat exchanger 9, which are sequentially arranged in the housing 1 along the direction from the air inlet end to the air outlet end, and a circulating pressurization component disposed on the precooling heat exchanger 7 and the dehumidification evaporator 8 for collaborative pressurization; the total heat recovery heat exchanger 9 is used to recover the cold or heat in the exhaust air; The precooling heat exchanger 7 and the dehumidification evaporator 8 cooperate to handle the dehumidification of high and low temperature air; the circulating pressurization component pressurizes the inside of the precooling heat exchanger 7 and the dehumidification evaporator 8 to increase the air pressure; When the air temperature is greater than 28°C, the precooling heat exchanger 7 operates to pre-cool the air, and then the dehumidification evaporator 8 dehumidifies the pre-cooled air; when the air temperature is less than or equal to 28°C, the precooling heat exchanger 7 stops operating, and the air passes through the precooling heat exchanger 7 and enters the dehumidification evaporator 8 for dehumidification.

[0036] As Figures 1-3As shown, in this embodiment, external air enters the device interior from the air inlet end of the housing 1 (where an air inlet filter plate 2 is provided at the air inlet end to filter the air). An air inlet fan 24 for controlling the external air of the housing 1 to enter the housing 1 through the air inlet end is also provided at the position of the air inlet filter plate 2 in the housing 1. The air inlet fan 24 is arranged at the air inlet end of the housing 1 through an air inlet plate 25, and the motor is used to drive the air inlet fan 24 to rotate, controlling the air flow to flow from the air inlet end to the air outlet end.

[0037] The temperature detection device provided at the air inlet end will detect the temperature of the incoming air. When the air temperature is greater than 28 °C, the precooling heat exchanger 7 starts to work, using the cooling capacity generated by the compressor 4 to precool the incoming high-temperature air, reducing the air temperature and creating favorable conditions for subsequent dehumidification; when the air temperature is less than or equal to 28 °C, the precooling heat exchanger 7 stops working, and the air directly passes through the precooling heat exchanger 7 (at this time, the precooling heat exchanger 7 does not change the air temperature) and enters the subsequent process.

[0038] The air that has undergone precooling treatment (or directly enters) enters the dehumidification evaporator 8. The dehumidification evaporator 8 condenses the water vapor in the air into liquid water and discharges it through refrigeration, achieving the dehumidification of the air. The precooling heat exchanger 7 and the dehumidification evaporator 8 work together to automatically adjust the working state according to the air temperature. In a high-temperature environment, the precooling heat exchanger 7 first precools the air, reducing the refrigeration load of the subsequent dehumidification evaporator 8 and improving the dehumidification speed and effect; in a low-temperature environment, the precooling heat exchanger 7 stops working, avoiding unnecessary energy consumption, and at the same time, the dehumidification evaporator 8 can still dehumidify stably, ensuring that the device can achieve efficient dehumidification at different ambient temperatures and meet the requirements of places with strict humidity requirements.

[0039] After the dehumidified air is discharged from the dehumidification evaporator 8, it enters the total heat recovery heat exchanger 9. The total heat recovery heat exchanger 9 recovers the cold or heat in the exhaust air. This part of the recovered energy can be used to preheat the fresh air entering the device or other media that need to be heated, realizing the recycling of energy. The air processed by the total heat recovery heat exchanger 9 is discharged from the air outlet end of the housing 1, completing the entire dehumidification process.

[0040] In this embodiment, the set circulation pressurization assembly pressurizes the interiors of the precooling heat exchanger 7 and the dehumidification evaporator 8 during the dehumidification process of the air by the dehumidification evaporator 8, increasing the air pressure. This operation improves the dehumidification effect of the dehumidification evaporator from multiple aspects, specifically as follows: Enhanced heat exchange: According to the principles of thermodynamics, increasing the air pressure will increase the air density. In the dehumidifying evaporator 8, heat exchange occurs between the air and the refrigerant on the surface of the evaporator. An increase in air density means that there are more air molecules per unit volume. More air molecules come into contact with the surface of the evaporator, increasing the contact area and opportunities for heat exchange, thus accelerating the heat transfer rate between the air and the refrigerant, enabling the water vapor in the air to reach the condensation condition faster, and improving the dehumidification efficiency.

[0041] Lower dew point temperature: The dew point temperature of air refers to the temperature to which the gaseous water in the air needs to be cooled to reach saturation and condense into liquid water under a certain air pressure. When the air pressure increases, the dew point temperature will decrease. This means that under the same temperature conditions, the pressurized air is more likely to reach the saturation state, and the water vapor is more likely to condense into liquid water. Therefore, the dehumidifying evaporator 8 can achieve effective dehumidification at a lower temperature, reducing the requirement for the refrigeration capacity of the refrigeration system and improving the stability and reliability of dehumidification.

[0042] Under high-temperature and high-humidity working conditions: In a high-temperature and high-humidity environment in summer, without pressurization, the dehumidifying evaporator 8 needs to cool the air to a relatively low temperature (such as 10 °C) to condense and dehumidify the water vapor in the air. This requires a large amount of refrigeration energy and the dehumidification speed is relatively slow. When the circulating pressurization component pressurizes the inside of the dehumidifying evaporator 8, the air pressure increases and the dew point temperature decreases. At this time, the dehumidifying evaporator 8 only needs to cool the air to about 15 °C to make the air reach the saturation state and realize the condensation and dehumidification of the water vapor. This not only reduces the energy consumption of the refrigeration system but also speeds up the dehumidification speed, and can reduce the indoor humidity to a comfortable range in a shorter time.

[0043] Under low-temperature and low-humidity working conditions: In winter or a low-temperature environment, the humidity of the air itself is relatively low, but traditional dehumidification equipment may have an unsatisfactory dehumidification effect due to insufficient contact between the air and the heat exchanger. After pressurization, the air density increases, and the contact with the surface of the dehumidifying evaporator 8 is closer, and the heat exchange is more sufficient. Even in a low-temperature environment, it can more effectively remove the trace water vapor in the air, ensuring the stability and accuracy of the dehumidification effect, and meeting the requirements of places with extremely high humidity requirements (precision instrument manufacturing workshops, electronic chip production factories).

[0044] As Figure 8 shown, in this embodiment, the heat exchanger body adopts a helical heat exchange tube 32 and a heat exchange plate 33 provided on the heat exchange tube 32.

[0045] As Figure 2As shown, the dehumidification mechanism further includes a primary condensation heat exchanger, a secondary subcooling heat exchanger, and a compressor 4 disposed in the housing 1. The primary condensation heat exchanger is used to dissipate heat from the high-temperature and high-pressure refrigerant generated by the compression of the compressor, condensing it into a liquid state; the secondary subcooling heat exchanger further cools the condensed refrigerant; during operation, the compressor 4 controls the refrigerant to flow through the primary condensation heat exchanger and the secondary subcooling heat exchanger in sequence for heat dissipation and subcooling treatment, and cooperates with the regulation of the electronic expansion valve 5 to accurately flow into the precooling heat exchanger 7 and the dehumidification evaporator 8.

[0046] In this embodiment, during the operation of the regenerative precooling dehumidification device based on multiple heat exchangers, the compressor 4 plays a core driving role, controlling the circulation of the refrigerant within the dehumidification mechanism. After being discharged from the compressor 4, the refrigerant will flow through the primary condensation heat exchanger and the secondary subcooling heat exchanger in sequence for heat dissipation and subcooling treatment, and then, under the regulation of the electronic expansion valve 5, accurately flow into the precooling heat exchanger 7 and the dehumidification evaporator 8. After completing the dehumidification function, it returns to the compressor 4, forming a complete cycle.

[0047] Among them, when the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 4, it first enters the primary condensation heat exchanger. Here, the refrigerant exchanges heat with the external environment, releasing a large amount of heat it carries, thereby gradually condensing the refrigerant from a gaseous state to a liquid state. The primary condensation heat exchanger dissipates heat by means of air cooling or water cooling to quickly reduce the temperature of the refrigerant.

[0048] The temperature of the liquid refrigerant after being condensed by the primary condensation heat exchanger is still relatively high. The function of the secondary subcooling heat exchanger is to further cool this part of the liquid refrigerant, reducing its temperature to a lower level. Through the secondary subcooling treatment, the amount of flash gas during the expansion of the refrigerant can be reduced, improving the evaporation heat absorption efficiency of the refrigerant in the precooling heat exchanger 7 and the dehumidification evaporator 8.

[0049] In this embodiment, the electronic expansion valve 5 is a device that precisely controls the refrigerant flow rate. It can adjust the refrigerant flow rate entering the precooling heat exchanger 7 and the dehumidification evaporator 8 in real time according to the operating conditions and actual requirements of the dehumidification device. By precisely controlling the flow rate, it can ensure that the refrigerant reaches the optimal evaporation state in the two heat exchangers, improving the utilization efficiency of the refrigerant.

[0050] In this embodiment, through the compression of the compressor 4 and the heat dissipation and subcooling treatment of the primary condensation heat exchanger and the secondary subcooling heat exchanger, the refrigerant can achieve efficient evaporation heat absorption in the precooling heat exchanger 7 and the dehumidification evaporator 8, thereby quickly reducing the air temperature and making the water vapor in the air more likely to condense into liquid water, improving the dehumidification efficiency.

[0051] Inside the housing 1, three fixed housings 26 are arranged between the air inlet end and the air outlet end. The adjacent ends of the three fixed housings 26 are provided with processing channels 27 that communicate with each other. The precooling heat exchanger 7, the dehumidifying evaporator 8, and the total heat recovery heat exchanger 9 are sequentially arranged in the processing channels 27 opened in the three fixed housings 26 from the air inlet end to the air outlet end. And at the opening position of the processing channel 27 of each fixed housing 26, a guiding component for controlling the unidirectional flow of air is provided. The guiding component controls the air to flow through the precooling heat exchanger 7, the dehumidifying evaporator 8, and the total heat recovery heat exchanger 9 in sequence from the air inlet end to the air outlet end.

[0052] The circulating pressurizing component includes two pressurizing members separately arranged on the fixed housings 26 where the precooling heat exchanger 7 and the dehumidifying evaporator 8 are installed, and a circulating member arranged on the two fixed housings 26 for performing circulating pressurizing and pressure releasing operations. When the circulating member controls one pressurizing member to pressurize the processing channel 27 in the fixed housing 26, the other pressurizing member releases the pressure of the processing channel 27 in the other fixed housing 26.

[0053] As Figures 1-10 shown, in this embodiment, by alternately pressurizing and releasing the pressure of the processing channel 27 through the circulating pressurizing component, a certain pressure fluctuation will be formed in the processing channel 27 of the fixed housing 26. This pressure fluctuation can prompt the air to contact the surfaces of the precooling heat exchanger 7 and the dehumidifying evaporator 8 more closely, enhancing the intensity and efficiency of heat exchange. In the precooling heat exchanger 7, stronger heat exchange can more quickly reduce the air temperature; in the dehumidifying evaporator 8, it can make the water vapor in the air condense more quickly, improving the dehumidification speed and effect.

[0054] Among them, the alternately pressurizing and releasing operation of the circulating pressurizing component can avoid the problems of local accumulation or poor flow of air in the processing channel 27, enabling the air to pass through each heat exchanger more evenly, improving the processing capacity and stability of the entire dehumidification system. Compared with the traditional dehumidification process, the alternately pressurizing and releasing operation of the circulating pressurizing component given in this embodiment can further improve the dehumidification efficiency and effect on the premise of ensuring the dehumidification effect.

[0055] As Figure 9 and Figure 10As shown in the figure, the pressing member includes a pressing column 12 vertically installed on the fixed housing 26, a sealing disc 35 slidably and sealingly passing through the pressing groove 34, and a driving rod 13 whose bottom end vertically penetrates the top of the pressing column 12 into the pressing groove 34 and connects the sealing disc 35; a pressing groove 34 is provided at the bottom end of the pressing column 12, and the pressing groove 34 communicates with the processing channel 27 in the fixed housing 26. The pressing column 12 serves as the main support structure for the pressing operation, provides an installation space for the sealing disc 35 and the driving rod 13, and realizes the influence of the pressing operation on the air pressure in the processing channel 27 through the connection between the pressing groove 34 and the processing channel 27; the main function of the sealing disc 35 is to change the effective volume of the pressing groove 34 during movement, so as to adjust the air pressure in the processing channel 27 of the corresponding fixed housing 26.

[0056] During the working process, the circulating member controls the two driving rods 13 to move synchronously along the rod body in opposite directions respectively. When one driving rod 13 drives the sealing disc 35 to move towards the bottom of the pressing groove 34, a pressing operation is performed on the processing channel 27 in the corresponding fixed housing 26; at the same time, the other driving rod 13 drives the sealing disc 35 to move towards the top of the pressing groove 34, and a pressure relief operation is performed on the processing channel 27 in the corresponding fixed housing 26.

[0057] As Figure 9 and Figure 10 As shown in the figure, in this embodiment, in the dehumidifying evaporator 8, the alternating pressing and pressure relief operations can make the water vapor in the air reach the condensation condition faster. When pressing, the air pressure increases, the dew point temperature decreases, and the water vapor is more likely to condense into liquid water; when pressure relief, the air flow is smoother, which is beneficial to the discharge of the condensed liquid water, thereby accelerating the dehumidification speed and improving the dehumidification effect. By alternately pressing and pressure relief operations, the relative stability of the air pressure in the processing channel 27 can be maintained, avoiding the problem of unstable dehumidification process caused by excessive pressure fluctuations. The stable dehumidification process can ensure that the dehumidification equipment can achieve the expected dehumidification effect under various working conditions, improving the reliability and stability of the dehumidification system.

[0058] Compared with the traditional continuous pressing method, the alternating pressing and pressure relief operation can reduce the energy consumption of the pressing member on the premise of ensuring the dehumidification effect. Because when the processing channel 27 in one fixed housing 26 is pressed, the processing channel 27 in the other fixed housing 26 is pressure relieved, reducing unnecessary energy consumption and improving the energy utilization efficiency of the entire equipment. The alternating pressing and pressure relief operation can make the various components of the dehumidification system operate more coordinately, reducing the problem of low system efficiency caused by pressure mismatch or energy waste. By optimizing the operation mode of the system, the operation cost of the equipment is reduced, and the economy of the equipment is improved.

[0059] As Figure 9 and Figure 10As shown, the circulating member includes a fixed rod 14 vertically arranged on the fixed housing 26 and located between the two driving rods 13, a rotating rod 15 rotatably connected to the top of the fixed rod 14 through the middle of the rod body, two sliding blocks 17 respectively slidably penetrating through the sliding grooves 16 opened along the length direction of the two ends of the rotating rod 15, and a circulating driving structure arranged on the fixed housing 26 and controlling the up-and-down cyclic swing of one end of the rotating rod 15. The two sliding blocks 17 are respectively fixedly arranged on the tops of different driving rods 13, and a limiting block 19 is fixedly arranged on the side surface of each sliding block 17; the limiting block 19 slidably penetrates through the limiting groove 18 opened on the groove wall of the sliding groove 16.

[0060] In this embodiment, the circulating driving structure starts to work, controlling one end of the rotating rod 15 to swing upward. Since the middle of the rotating rod 15 is rotatably connected to the top of the fixed rod 14, when one end swings upward, the other end will inevitably swing downward. The sliding block 17 moves to drive the driving rod 13: as the rotating rod 15 swings, the sliding block 17 slides in the sliding groove 16. The sliding block 17 fixed to the top of one driving rod 13 moves upward with the upward-swinging end of the rotating rod 15, thereby driving the driving rod 13 to move upward; the sliding block 17 fixed to the top of the other driving rod 13 moves downward with the downward-swinging end of the rotating rod 15, thereby driving the driving rod 13 to move downward. During the sliding process of the sliding block 17, the limiting block 19 slides in the limiting groove 18, restricting the sliding direction and range of the sliding block 17, ensuring that the sliding block 17 can accurately drive the driving rod 13 to move up and down, avoiding system failures caused by the deviation or detachment of the sliding block 17, and ensuring the stability and reliability of the operation of the circulating member. When one driving rod 13 moves upward, it drives the sealing disc 35 connected thereto to move toward the top of the pressure chamber 34, performing a pressure relief operation on the corresponding processing channel 27 in the fixed housing 26; at the same time, the other driving rod 13 moves downward, driving the sealing disc 35 connected thereto to move toward the bottom of the pressure chamber 34, performing a pressurization operation on the corresponding processing channel 27 in the fixed housing 26. The circulating driving structure continuously works, causing the rotating rod 15 to continuously swing up and down cyclically, thereby realizing the synchronous movement of the two driving rods 13 along the rod body in opposite directions respectively, and completing the alternating pressurization and pressure relief operations.

[0061] In this embodiment, the circulating member can adjust the swing amplitude and frequency of the rotating rod 15 through the circulating driving structure according to different environmental temperatures, humidities, and dehumidification requirements, thereby changing the intensity and speed of pressurization and pressure relief, enabling the dehumidification system to better adapt to various working conditions, improving the dehumidification effect and the adaptability of the system; and realizing the alternating pressurization and pressure relief operations through precise mechanical transmission. Compared with traditional pressurization methods, it reduces unnecessary energy consumption. The circulating driving structure can adjust the operating parameters according to actual needs, avoiding waste of energy and improving the energy utilization efficiency of the entire dehumidification system.

[0062] AsFigure 9 and Figure 10 As shown in Figure 10 , the cyclic drive structure includes a drive rod 23 disposed vertically with its top rotatably connected to a position on the rod body of the rotating rod 15 deviating from the middle, and a drive motor disposed on the fixed housing 26 with a rotating disk 22 provided at its output end. The bottom end of the drive rod 23 is rotatably connected to a position deviating from the center of the end face of the rotating disk 22.

[0063] In this embodiment, when the drive motor starts to operate, its output end drives the rotating disk 22 to rotate. Since the bottom end of the drive rod 23 is rotatably connected to a position deviating from the center of the end face of the rotating disk 22, during the rotation of the rotating disk 22, the bottom end of the drive rod 23 will follow a part of the circular motion trajectory of the rotating disk 22, thereby generating a displacement in the vertical direction. The top of the drive rod 23 is rotatably connected to a position on the rod body of the rotating rod 15 deviating from the middle. When the bottom end of the drive rod 23 generates a vertical displacement, the drive rod 23 will rotate around its connection point with the rotating rod 15 and transmit this vertical force to the rotating rod 15. Since the middle of the rotating rod 15 is rotatably connected to the top of the fixed rod 14, under the action of the drive rod 23, the rotating rod 15 will swing up and down cyclically with the fixed rod 14 as the axis.

[0064] As Figure 7 shown, in this embodiment, a guiding assembly for controlling the unidirectional flow of air from the intake end to the exhaust end is provided. The guiding assembly includes guiding plates 21 detachably installed at both ends of the processing channel 27 opened in the fixed housing 26, a sealing block 29 fitted to the opening position of the guiding hole 28 on the end face of the guiding plate 21 adjacent to the exhaust end, a limiting spring 30 passing through the guiding hole 28 and having one end connected to the sealing block 29, and a fixing block 31 provided at the opening position of the guiding hole 28 on the guiding plate 21 adjacent to the intake end and connected to the limiting spring 30.

[0065] The working process of the guiding assembly cooperating with the cyclic pressurizing assembly in this embodiment is as follows: 1. Initial state When no pressurizing and depressurizing operation is performed, the sealing block 29 in the guiding assembly is in the initial position at the opening of the guiding hole 28 adjacent to the exhaust end under the action of the limiting spring 30, closing the guiding hole 28 to restrict reverse flow and ensuring that air can only flow unidirectionally from the intake end to the exhaust end.

[0066] The cyclic pressurizing assembly is in a static state. The two drive rods 13 are respectively in corresponding positions, driving the sealing disk 35 to be at the initial height in the pressurizing groove 34. At this time, the air pressure in the processing channel 27 is in a relatively stable state.

[0067] 2. Pressurizing stage When the cyclic drive structure starts and drives one end of the rotating rod 15 to swing upward, the sealing disc 35 connected to the drive rod 13 at this end moves towards the bottom of the pressure chamber 34, performing a pressurization operation on the processing channel 27 within the corresponding fixed housing 26.

[0068] The pressurization operation increases the air pressure within the processing channel 27. When the air pressure is greater than the elastic force of the limit spring 30 and pushes open the sealing disc 35, the air flows more rapidly towards the exhaust end through the guiding holes 28 under the action of the pressure. At this time, the sealing block 29 within the guiding assembly is further affected by the air pressure, but the limit spring 30 provides a certain reaction force, preventing the sealing block 29 from being easily fully pushed open. Instead, it moves a certain distance within the guiding hole 28 according to the pressure magnitude, maintaining the guiding hole 28 in a proper open state to ensure that the air can flow smoothly and maintain unidirectional flow.

[0069] Meanwhile, the other drive rod 13 drives the sealing disc 35 to move towards the top of the pressure chamber 34, performing a pressure relief operation on the processing channel 27 within the corresponding fixed housing 26. The air pressure within this processing channel 27 decreases, but due to the unidirectional flow restriction of the guiding assembly, the air does not flow back from the exhaust end to the intake end.

[0070] 3. Pressure Relief Stage As the cyclic drive structure continues to operate, the swinging direction of the rotating rod 15 changes, and the previously pressurized processing channel 27 starts to release pressure. The sealing disc 35 moves towards the top of the pressure chamber 34, and the air pressure within the processing channel 27 gradually returns to normal.

[0071] At this time, under the action of the limit spring 30, the sealing block 29 within the guiding assembly slowly moves towards the initial position, but still maintains a certain open state, allowing the remaining air within the processing channel 27 to continue flowing towards the exhaust end until the pressure is balanced.

[0072] While the previously pressure-relieved processing channel 27 starts to be pressurized, the air pressure within this processing channel 27 increases and rapidly flows towards the exhaust end through the guiding holes 28. The guiding assembly once again plays its role in restricting unidirectional flow to ensure unidirectional air flow.

[0073] As Figure 2 shown, a partition plate 6 separating the precooling heat exchanger 7, the dehumidifying evaporator 8, and the total heat recovery heat exchanger 9 from the compressor 4 is horizontally arranged within the housing 1. And at the position below the fixed housings 26 of the precooling heat exchanger 7 and the dehumidifying evaporator 8, a water collecting block 20 is provided at the bottom of the partition plate 6. A drain pipe is provided at the bottom of the water collecting block 20, and a control valve is provided on the drain pipe.

[0074] In this embodiment, the one-way flow restriction of the guide component prevents the air from flowing back when the pressure changes, ensuring that the air always flows from the air intake end to the exhaust end, avoiding the confusion and reduced efficiency of the dehumidification process caused by the air backflow, and ensuring the stable operation of the dehumidification system.

[0075] A heat recovery precooling dehumidification method based on multiple heat exchangers comprises the following steps: S1: Air introduction: Start the dehumidification equipment, the outside air enters the dehumidification equipment through the air inlet, and the air temperature and humidity are detected. Under the guidance of the air flow path, the air flows to the processing channel 27 of the subsequent fixed shell 26 in sequence. According to the comprehensive data of humidity and temperature, the working parameters of the subsequent heat exchangers in each stage are dynamically adjusted; S2: Precooling stage: When the air temperature is greater than 28°C, the precooling heat exchanger 7 is started, and the air enters the processing channel 27 of the fixed shell 26 provided with the precooling heat exchanger 7, and performs heat exchange with the precooling heat exchanger 7 to reduce the air temperature and complete the precooling process; when the air temperature is less than 28°C, the precooling heat exchanger 7 is closed, and the air directly passes through the precooling heat exchanger 7; S3: Dehumidification stage: The pre-cooled air enters the processing channel 27 of the fixed shell 26 provided with the dehumidification evaporator 8, exchanges heat with the dehumidification evaporator 8, and the water vapor in the air condenses into liquid water when it is cooled and is discharged; S4: Full heat recovery stage: the dehumidified air enters the processing channel 27 of the fixed shell 26 provided with the full heat recovery heat exchanger 9, exchanges heat with the full heat recovery heat exchanger 9, and recovers part of the cold or heat in the air; S5: Air discharge: The air after full heat recovery treatment is discharged from the dehumidification equipment from the exhaust end.

[0076] In this embodiment, the alternating pressurization and depressurization operations of the cyclic pressurization assembly can enhance the flow velocity and turbulence of the air in the processing channel 27. In the precooling stage, the accelerated air flow makes the air contact with the precooling heat exchanger 7 more complete, improves the heat exchange efficiency, and further reduces the air temperature. In the dehumidification stage, the turbulent air can better exchange heat with the dehumidification evaporator 8, promotes the condensation of water vapor, and improves the dehumidification effect.

[0077] The one-way flow restriction of the guide assembly ensures that the air flows in the processing channel 27 in a predetermined direction, avoiding air turbulence and backflow. Combined with the function of the circulating pressurization assembly, the air flow between the heat exchangers is more orderly, which is conducive to the transfer and recovery of heat and improves the efficiency of the full heat recovery stage.

[0078] During the air introduction step, the dehumidification equipment is provided with a one-way guide structure at the air inlet end and the opening position of each fixed shell 26 processing channel 27, and the one-way guide structure only allows air to flow along the air flow path from the air inlet end to the exhaust end.

[0079] The cyclic pressurization assembly includes two pressurizing members disposed on the fixed housing 26 of the installation precooling heat exchanger 7 and the dehumidifying evaporator 8, and a cyclic member for controlling the cyclic pressurization and pressure release of the two pressurizing members; the method further includes: Cyclic pressurization and pressure release step: During the process of air flowing through the processing channel 27 of the fixed housing 26 provided with the precooling heat exchanger 7 and the dehumidifying evaporator 8, the cyclic member controls the two pressurizing members to perform cyclic pressurization and pressure release operations on the corresponding processing channels 27 respectively, increasing the pressure in the processing channel 27.

[0080] The pressurizing member includes a pressurizing column 12 installed on the fixed housing 26 in the vertical direction, a sealing disk 35 slidably and sealingly penetrating through the pressurizing groove 34 of the pressurizing column 12, and a driving rod 13 connecting the sealing disk 35 and penetrating through the top of the pressurizing column 12; The cyclic member includes a fixed rod 14, a rotating rod 15, two sliding blocks 17, and a cyclic driving structure; the fixed rod 14 is arranged in the middle position between the two fixed housings 26 of the installed pressurizing members in the vertical direction, the middle part of the rod body of the rotating rod 15 is rotatably connected to the top of the fixed rod 14, the two sliding blocks 17 respectively slidably penetrate through the sliding grooves 16 at both ends of the rod body of the rotating rod 15, and are respectively fixedly arranged on the tops of different driving rods 13, a limiting block 19 is arranged on the side of the sliding block 17, and the limiting block 19 slidably penetrates through the limiting groove 18 on the groove wall of the sliding groove 16; The specific cyclic pressurization and pressure release step is: The cyclic driving structure drives one end of the rotating rod 15 to swing up and down cyclically. When the rotating rod 15 rotates, the sliding block 17 slides in the sliding groove 16, thereby driving the two driving rods 13 to move synchronously along the rod body in opposite directions respectively. When one driving rod 13 drives the sealing disk 35 to move towards the bottom of the pressurizing groove 34, a pressurization operation is performed on the processing channel 27 in the corresponding fixed housing 26; at the same time, the other driving rod 13 drives the sealing disk 35 to move towards the top of the pressurizing groove 34, performing a pressure release operation on the processing channel 27 in the corresponding fixed housing 26, forming the convection of air in the processing channel 27.

[0081] In the precooling stage, the precooling heat exchanger 7 uses the cold generated by the compressor 4 to cool the air entering its processing channel 27, reducing the air temperature to a preset suitable dehumidification temperature range.

[0082] In the total heat recovery stage, the total heat recovery heat exchanger 9 adopts heat exchange technology to recover part of the heat in the dehumidified air, and the recovered heat can be used to preheat the fresh air entering the dehumidification equipment or provide heat for other components in the equipment that need heating, realizing the efficient recycling of energy.

[0083] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A regenerative pre-cooling type dehumidification device based on multiple heat exchangers, comprising a housing (1) and a dehumidification mechanism arranged in the housing (1) for dehumidifying air, characterized in that, The housing (1) is provided with an air inlet end and an air outlet end on its symmetrical sides. The dehumidification mechanism includes a precooling heat exchanger (7), a dehumidifying evaporator (8), and a total heat recovery heat exchanger (9) that are arranged in the housing (1) in sequence from the air inlet end to the air outlet end, and a circulating pressurization assembly that is arranged on the precooling heat exchanger (7) and the dehumidifying evaporator (8) for collaborative pressurization; the total heat recovery heat exchanger (9) is used to recover the cold or heat in the exhaust air; The precooling heat exchanger (7) and the dehumidifying evaporator (8) cooperate to dehumidify high and low temperature air; the circulating pressurization assembly pressurizes the interiors of the precooling heat exchanger (7) and the dehumidifying evaporator (8) to increase the air pressure; When the air temperature is greater than 28 °C, the precooling heat exchanger (7) operates to pre-cool the air, and then the dehumidifying evaporator (8) dehumidifies the pre-cooled air; when the air temperature is less than or equal to 28 °C, the precooling heat exchanger (7) stops operating, and the air enters the dehumidifying evaporator (8) through the precooling heat exchanger (7) for dehumidification.

2. The regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 1, characterized in that: The dehumidification mechanism further includes a primary condensation heat exchanger, a secondary subcooling heat exchanger, and a compressor (4) arranged in the housing (1). The primary condensation heat exchanger is used to dissipate heat from the high-temperature and high-pressure refrigerant compressed by the compressor to condense it into a liquid state; the secondary subcooling heat exchanger further cools the condensed refrigerant; During the working process, the compressor (4) controls the refrigerant to flow through the primary condensation heat exchanger and the secondary subcooling heat exchanger in sequence for heat dissipation and subcooling treatment, and cooperates with the regulation of the electronic expansion valve (5) to accurately flow into the precooling heat exchanger (7) and the dehumidifying evaporator (8).

3. The regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 1 or 2, characterized in that: Three fixed shells (26) are arranged in the housing (1) between the air inlet end and the air outlet end. The adjacent ends of the three fixed shells (26) are provided with a mutually communicating treatment channel (27). The precooling heat exchanger (7), the dehumidifying evaporator (8), and the total heat recovery heat exchanger (9) are sequentially arranged in the treatment channels (27) opened by the three fixed shells (26) from the air inlet end to the air outlet end, and a guiding assembly for controlling the unidirectional flow of air is arranged at the opening position of the treatment channel (27) of each fixed shell (26). The guiding assembly controls the air to flow through the precooling heat exchanger (7), the dehumidifying evaporator (8), and the total heat recovery heat exchanger (9) in sequence from the air inlet end to the air outlet end.

4. The regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 3, wherein: The circulating pressurization assembly includes two pressurizing members separately arranged on the fixed shells (26) for installing the precooling heat exchanger (7) and the dehumidifying evaporator (8), and a circulating member arranged on the two fixed shells (26) for performing circulating pressurization and pressure release operations. When the circulating member controls one pressurizing member to pressurize the treatment channel (27) in the fixed shell (26), the other pressurizing member releases the pressure of the treatment channel (27) in the other fixed shell (26).

5. The regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 4, characterized in that: The pressurizing member includes a pressurizing column (12) vertically installed on the fixed housing (26), a sealing disc (35) slidably and sealingly disposed in the pressurizing groove (34), and a driving rod (13) with its bottom end vertically penetrating the top of the pressurizing column (12) into the pressurizing groove (34) and connecting the sealing disc (35); a pressurizing groove (34) is formed at the bottom end of the pressurizing column (12), and the pressurizing groove (34) communicates with the processing channel (27) in the fixed housing (26). During the working process, the circulating member controls the two driving rods (13) to synchronously move in opposite directions along the rod bodies respectively. When one driving rod (13) drives the sealing disc (35) to move towards the bottom of the pressurizing groove (34), a pressurizing operation is performed on the processing channel (27) in the corresponding fixed housing (26); meanwhile, the other driving rod (13) drives the sealing disc (35) to move towards the top of the pressurizing groove (34), and a pressure relief operation is performed on the processing channel (27) in the corresponding fixed housing (26).

6. The regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 5, wherein: The circulating member includes a fixed rod (14) vertically arranged on the fixed housing (26) and located between the two driving rods (13), a rotating rod (15) rotatably connected to the top of the fixed rod (14) through the middle of the rod body, two sliding blocks (17) respectively slidably disposed in the sliding grooves (16) formed along the length direction of the two ends of the rotating rod (15), and a circulating driving structure arranged on the fixed housing (26) and controlling one end of the rotating rod (15) to swing up and down cyclically. The two sliding blocks (17) are respectively fixedly arranged on the tops of different driving rods (13), and a limiting block (19) is fixedly arranged on the side surface of each sliding block (17); the limiting block (19) slidably penetrates into the limiting groove (18) formed on the groove wall of the sliding groove (16).

7. The regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 6, characterized in that: The circulating driving structure includes a transmission rod (23) vertically arranged and rotatably connected to a position deviating from the middle of the rod body of the rotating rod (15) at the top, and a driving motor arranged on the fixed housing (26) with a rotating disc (22) at the output end. The bottom end of the transmission rod (23) is rotatably connected to a position deviating from the center of the end face of the rotating disc (22).

8. A regenerative pre-cooling dehumidification method based on multiple heat exchangers, characterized in that, It includes the following steps: S1: Air introduction: Start the dehumidification device, the outside air enters the dehumidification device through the air inlet end, and the air temperature is detected. Under the guidance of the air flow path, it flows sequentially into the processing channels (27) of the subsequent fixed housings (26). S2: Pre-cooling stage: When the air temperature is greater than 28 °C, the pre-cooling heat exchanger (7) is started, and the air enters the processing channel (27) of the fixed housing (26) provided with the pre-cooling heat exchanger (7) to exchange heat with the pre-cooling heat exchanger (7), so that the air temperature is reduced to complete the pre-cooling process; when the air temperature is less than 28 °C, the pre-cooling heat exchanger (7) is closed, and the air directly passes through the pre-cooling heat exchanger (7). S3: Dehumidification stage: The pre-cooled air enters the processing channel (27) of the fixed housing (26) provided with the dehumidification evaporator (8) to exchange heat with the dehumidification evaporator (8), and the water vapor in the air condenses into liquid water and is discharged. S4: Total heat recovery stage: The dehumidified air enters the processing channel (27) of the fixed housing (26) provided with a total heat recovery heat exchanger (9), exchanges heat with the total heat recovery heat exchanger (9), and recovers part of the cold or heat in the air. S5: Air discharge: The air after total heat recovery treatment is discharged from the exhaust end of the dehumidification device.

9. A regenerative pre-cooling dehumidification method based on multiple heat exchangers according to claim 8, characterized in that: In the air introduction step, the dehumidification device is provided with a one-way guiding structure at the intake end and the opening position of each processing channel (27) of the fixed housing (26), and this one-way guiding structure only allows air to flow from the intake end to the exhaust end along the air flow path.

10. A regenerative pre-cooling dehumidification method based on multiple heat exchangers according to claim 8 or 9, characterized in that: The cyclic pressurization assembly includes two pressurizing members provided on the fixed housing (26) of the installation pre-cooling heat exchanger (7) and the dehumidification evaporator (8), and a cyclic member for controlling the cyclic pressurization and pressure release of the two pressurizing members; the method further includes: Cyclic pressurization and pressure release step: During the process of air flowing through the processing channel (27) of the fixed housing (26) provided with the pre-cooling heat exchanger (7) and the dehumidification evaporator (8), the cyclic member controls the two pressurizing members to perform cyclic pressurization and pressure release operations on the corresponding processing channels (27) respectively, increasing the pressure in the processing channels (27).

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