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

Abstract

The present invention provides a heat recovery pre-cooling dehumidification device and a dehumidification method based on multiple heat exchangers, which relates to the technical field of dehumidifiers, including a dehumidification mechanism arranged in a shell for dehumidifying the air, and an air inlet end and an exhaust end are opened on the symmetrical sides of the shell. The dehumidification mechanism includes a pre-cooling heat exchanger, a dehumidification evaporator and a full heat recovery heat exchanger arranged in the shell and arranged in sequence from the air inlet end to the exhaust end, and a circulating pressurizing component arranged on the pre-cooling heat exchanger and the dehumidification evaporator for coordinated pressurization; the full 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 the dehumidification of high and low temperature air; the circulating pressurizing component pressurizes the inside of the pre-cooling heat exchanger and the dehumidification evaporator to increase the air pressure; the present invention effectively solves the problems of large fluctuations in dehumidification effect and insufficient dehumidification depth of traditional dehumidification technology under different environments, and significantly improves the dehumidification efficiency and quality.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidifiers, and in particular to a heat recovery pre-cooling dehumidification device and a dehumidification method based on multiple heat exchangers. Background Art

[0002] In many fields, including industrial production, commercial buildings, and residential housing, high humidity control is crucial. High humidity not only affects human comfort but can also damage production equipment, products, and building structures. In electronic equipment production workshops, high humidity can cause short circuits in electronic components, impacting product quality. In museums and archives, high humidity can accelerate the deterioration of cultural relics and archives. Therefore, dehumidification equipment is widely used in these fields.

[0003] Traditional dehumidification equipment usually uses a single dehumidification method, such as cooling dehumidification. Its principle is to use the refrigeration system to cool the air to below the dew point temperature, 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:

[0004] 1. High energy consumption: Cooling and dehumidification requires cooling the air to a lower temperature, which consumes a lot of electricity to drive the refrigeration system, resulting in high operating costs.

[0005] 2. Dehumidification efficiency is greatly affected by ambient temperature: In a high temperature and high humidity environment, the effect of cooling and dehumidification will be limited to a certain extent, because it takes more energy to reach a lower dew point temperature, and the efficiency of the refrigeration system will also be reduced.

[0006] 3. Unable to fully utilize the heat in the dehumidification process: During the cooling and dehumidification process, the heat in the air is directly discharged into the environment and is not effectively recovered and utilized, resulting in energy waste.

[0007] Although some heat recovery and pre-cooling dehumidification equipment has appeared on the market, attempting to solve some of the problems of traditional dehumidification technology, these devices still have shortcomings in their structure and dehumidification methods. However, the dehumidification effect of existing heat recovery and pre-cooling dehumidification equipment fluctuates with changes in ambient temperature and humidity. In high temperature and high humidity environments, to achieve the ideal dehumidification effect, the refrigeration system needs to bear a greater load, which reduces operating efficiency and dehumidification efficiency. In some places with extremely high humidity requirements, such as precision instrument manufacturing workshops and electronic chip production plants, existing dehumidification technology has difficulty meeting their strict humidity control requirements. Even if the equipment is operated for a long time, it is difficult to reduce the air humidity to the extremely low level required, which affects product quality and the stability of the production process. Summary of the Invention

[0008] In response to the above problems, the present application provides a heat recovery pre-cooling dehumidification device and a dehumidification method based on multiple heat exchangers.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a heat recovery pre-cooling dehumidification device based on multiple heat exchangers, comprising a housing and a dehumidification mechanism disposed in the housing for dehumidifying air, characterized in that an air inlet end and an air outlet end are provided on symmetrical side surfaces of the housing, the dehumidification mechanism comprising a pre-cooling heat exchanger, a dehumidifying evaporator and a full heat recovery heat exchanger disposed in the housing and sequentially arranged from the air inlet end to the air outlet end, and a circulating pressurizing assembly disposed on the pre-cooling heat exchanger and the dehumidifying evaporator for cooperative pressurization; the full heat recovery heat exchanger is used to recover cold or heat in the exhaust air;

[0010] The pre-cooling heat exchanger and the dehumidification evaporator work together to dehumidify high and low temperature air; the circulating pressurizing component pressurizes the interior of the pre-cooling heat exchanger and the dehumidification evaporator to increase the air pressure;

[0011] When the air temperature is greater than 28°C, the pre-cooling heat exchanger starts working to pre-cool the air, and the dehumidification evaporator then dehumidifies the pre-cooled air; when the air temperature is less than or equal to 28°C, the pre-cooling heat exchanger stops working, and the air passes through the pre-cooling heat exchanger and enters the dehumidification evaporator for dehumidification;

[0012] Three fixed shells are arranged in the shell between the air intake end and the exhaust end. The adjacent ends of the three fixed shells are provided with processing channels that penetrate each other. The pre-cooling heat exchanger, dehumidification evaporator and full heat recovery heat exchanger are arranged in the processing channels opened by the three fixed shells from the air intake end to the exhaust end in sequence, and a guide component for controlling the one-way flow of air is provided at the opening position of the processing channel of each fixed shell. The guide component controls the air to flow through the pre-cooling heat exchanger, dehumidification evaporator and full heat recovery heat exchanger in sequence from the air intake end to the exhaust end.

[0013] Preferably, the dehumidification mechanism further includes a primary condensing heat exchanger, a secondary subcooling heat exchanger and a compressor arranged in the shell. The primary condensing heat exchanger is used to dissipate heat from the high-temperature and high-pressure refrigerant generated by the compressor, condensing it into a liquid state; the secondary subcooling heat exchanger further cools the condensed refrigerant.

[0014] During operation, the compressor controls the refrigerant to flow through the primary condensing heat exchanger and the secondary subcooling heat exchanger in sequence for heat dissipation and subcooling treatment. Under the regulation of the electronic expansion valve, the refrigerant flows accurately into the pre-cooling heat exchanger and dehumidification evaporator.

[0015] Preferably, the circulating pressurizing assembly includes two pressurizing parts respectively arranged on the fixed shells on which the pre-cooling heat exchanger and the dehumidification evaporator are installed, and a circulating part arranged on the two fixed shells for performing cyclic pressurizing and depressurizing operations. The circulating part controls one of the pressurizing parts to pressurize the processing channel in the fixed shell, while the other pressurizing part depressurizes the processing channel in the other fixed shell.

[0016] Preferably, the pressure member includes a pressure column mounted on the fixed shell in a vertical direction, a sealing disk slidingly and sealingly inserted into the pressure groove, and a driving rod with a bottom end vertically extending through the top of the pressure column in the pressure groove and connected to the sealing disk; a pressure groove is formed at the bottom end of the pressure column, and the pressure groove is connected to the processing channel in the fixed shell;

[0017] During 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.

[0018] 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 sliding through different sliding grooves, and a circulating driving structure arranged on the fixed shell and controlling the up and down cyclic swinging of one end of the rotating rod. Sliding grooves are provided on the rod body at both ends of the rotating rod along the length direction, the two sliding blocks are respectively fixed on the top of different driving rods, and a limiting block is fixed on the side of each sliding block; the limiting block slides through the limiting groove provided on the wall of the sliding groove.

[0019] Preferably, the circulating drive structure includes a transmission rod arranged in a vertical direction and the top of which is rotated and connected to the rotating rod body deviating 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 rotated and connected to the bottom end of the transmission rod deviating from the center position.

[0020] A heat recovery pre-cooling dehumidification method based on multiple heat exchangers comprises the following steps:

[0021] S: Air introduction: Start the dehumidification equipment, and the outside air enters the dehumidification equipment through the air inlet end, 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;

[0022] 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, lowering the air temperature and completing 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;

[0023] 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;

[0024] 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;

[0025] S: Air exhaust: The air after full heat recovery treatment is discharged from the dehumidification equipment from the exhaust end.

[0026] Preferably, in 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 processing channel, 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.

[0027] Preferably, the cyclic pressurizing assembly includes two pressurizing members arranged on a fixed shell on which the pre-cooling heat exchanger and the dehumidifying evaporator are mounted, and a circulating member for controlling the cyclic pressurization and depressurization of the two pressurizing members; the method further includes:

[0028] Circulation pressurization and depressurization steps: When the air flows through the fixed shell processing channel equipped with a pre-cooling heat exchanger and a dehumidification evaporator, the circulation component controls the two pressurizing components to perform cyclic pressurization and depressurization operations on the corresponding processing channels respectively, thereby increasing the pressure in the processing channel.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. This device utilizes a multi-heat exchanger layout—a pre-cooling heat exchanger, a dehumidifying evaporator, and a heat recovery heat exchanger are sequentially positioned within a fixed shell's processing channel. This allows air to undergo heat exchange with each heat exchanger in a scientifically rationalized process. The pre-cooling heat exchanger lowers the air temperature in advance, creating favorable conditions for efficient dehumidification in the subsequent dehumidifying evaporator, significantly improving dehumidification speed and effectiveness. Compared to traditional dehumidification equipment, this device can reduce air humidity to the target value more quickly, meeting the needs of locations with stringent humidity requirements.

[0031] 2. The innovative design of the circulating pressurization component enables cyclic pressurization and depressurization of the air within the process channel, creating strong and uniform convection within the channel. This convection increases the contact area and contact time between the air and the heat exchanger, improving heat exchange efficiency, further optimizing the dehumidification effect, and ensuring the stability and reliability of the dehumidification process. Furthermore, by increasing the air pressure within the process channel, the dehumidification effect and efficiency are improved.

[0032] 3. This dehumidification method defines the steps of air introduction, pre-cooling, dehumidification, full heat recovery, and air exhaust, forming a complete and standardized dehumidification process. Strict adherence to this process ensures effective air treatment at every stage, improving the quality and efficiency of dehumidification. The inclusion of a cyclic pressurization and decompression process creates convection within the treatment channel, enhancing heat exchange between the air and the heat exchanger. This convection breaks up the stagnant air layer within the channel, allowing the air to more fully contact the heat exchanger surface, improving heat exchange efficiency, and thus accelerating dehumidification and enhancing the dehumidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The disclosure of the present invention is 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:

[0034] Figure 1 This is a simplified structural diagram of the heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers proposed in the present invention.

[0035] Figure 2 This is a schematic diagram of the internal structure of the heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers proposed in the present invention.

[0036] Figure 3 It is a structural schematic diagram of the dehumidification mechanism of the present invention.

[0037] Figure 4 This is a structural schematic diagram of one side of the pre-cooling heat exchanger of the present invention.

[0038] Figure 5 This is a schematic structural diagram of the other side of the pre-cooling heat exchanger of the present invention.

[0039] Figure 6 This is a schematic diagram of the expanded structure of the pre-cooling heat exchanger of the present invention.

[0040] Figure 7 for Figure 6 A schematic diagram of the enlarged structure.

[0041] Figure 8 It is a schematic structural diagram of the heat exchanger body of the present invention.

[0042] Figure 9 This is a schematic structural diagram of the circulating pressurizing component of the present invention.

[0043] Figure 10 It is a schematic diagram of the cross-sectional structure of the circulating pressurizing assembly of the present invention.

[0044] In the figure: 1. Shell; 2. Air intake filter plate; 3. Exhaust filter plate; 4. Compressor; 5. Electronic expansion valve; 6. Partition plate; 7. Pre-cooling heat exchanger; 8. Dehumidification evaporator; 9. Full heat recovery heat exchanger; 12. Pressurization column; 13. Drive rod; 14. Fixed rod; 15. Rotating rod; 16. Sliding groove; 17. Sliding block; 18. Limiting groove; 19. Limiting block; 20. Water collecting block; 21. Guide plate; 22. Rotating disk; 23. Drive rod; 24. Intake fan; 25. Intake plate; 26. Fixed shell; 27. Processing channel; 28. Guide hole; 29. ​​Sealing block; 30. Limiting spring; 31. Fixed block; 32. Heat exchange tube; 33. Heat exchange plate; 34. Pressurization groove; 35. Sealing disk. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0046] In various scenarios with strict requirements for humidity control, the shortcomings of traditional dehumidification technology are becoming increasingly prominent. On the one hand, its dehumidification effect is deeply constrained by environmental factors. When in a high temperature and high humidity environment, the refrigeration system has to bear a greater operating load to achieve the ideal dehumidification effect, which in turn causes the operating efficiency to decline and the dehumidification process to become slow. Just like in the southern region in summer, the hot and humid air makes traditional dehumidification equipment "struggle" 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 requirements for humidity, such as precision instrument manufacturing workshops and electronic chip production plants, traditional dehumidification technology is even more powerless. Even if the equipment continues to operate for a long time, it is difficult to accurately reduce the air humidity to the required extremely low level, which will undoubtedly have an adverse effect on product quality and the stability of the production process.

[0047] In response to the problems that arise during the use of the dehumidification equipment in the above-mentioned prior art, the present invention proposes a heat recovery pre-cooling dehumidification equipment and a dehumidification method based on multiple heat exchangers.

[0048] Example 1: See Figures 1-10A heat recovery pre-cooling dehumidification device based on multiple heat exchangers includes a shell 1 and a dehumidification mechanism disposed in the shell 1 for dehumidifying the air. The shell 1 has an air inlet and an exhaust port opened on symmetrical sides. The dehumidification mechanism includes a pre-cooling heat exchanger 7, a dehumidification evaporator 8, and a full heat recovery heat exchanger 9 disposed in the shell 1 and sequentially arranged from the air inlet to the exhaust port, as well as a circulating pressurizing component disposed on the pre-cooling heat exchanger 7 and the dehumidification evaporator 8 for cooperative pressurization; the full heat recovery heat exchanger 9 is used to recover cold or heat in the exhaust air.

[0049] The pre-cooling heat exchanger 7 and the dehumidification evaporator 8 cooperate to dehumidify the high and low temperature air; the circulating pressurizing component pressurizes the interior of the pre-cooling heat exchanger 7 and the dehumidification evaporator 8 to increase the air pressure;

[0050] When the air temperature is greater than 28°C, the pre-cooling heat exchanger 7 starts working to pre-cool the air, and the dehumidification evaporator 8 then dehumidifies the pre-cooled air; when the air temperature is less than or equal to 28°C, the pre-cooling heat exchanger 7 stops working, and the air passes through the pre-cooling heat exchanger 7 and enters the dehumidification evaporator 8 for dehumidification.

[0051] like Figure 1-Figure 3 As shown, in this embodiment, external air enters the interior of the device from the air inlet end of the shell 1 (the air inlet end is provided with an air inlet filter plate 2 to filter the air), and an air inlet fan 24 for controlling the air outside the shell 1 to enter the shell 1 through the air inlet end is also provided at the position of the air inlet filter plate 2 in the shell 1. The air inlet fan 24 is provided at the air inlet end of the shell 1 through the air inlet plate 25, and cooperates with the motor to drive the air inlet fan 24 to rotate, thereby controlling the air flow to flow from the air inlet end to the exhaust end.

[0052] The temperature of the incoming air is detected by a temperature detection device installed at the air inlet. When the air temperature is greater than 28°C, the pre-cooling heat exchanger 7 starts to operate, using the cooling capacity generated by the compressor 4 to pre-cool the incoming high-temperature air, lowering the air temperature and creating favorable conditions for subsequent dehumidification. When the air temperature is less than or equal to 28°C, the pre-cooling heat exchanger 7 stops operating, and the air passes directly through the pre-cooling heat exchanger 7 (at this time, the pre-cooling heat exchanger 7 does not change the air temperature) and enters the subsequent process.

[0053] After pre-cooling (or directly entering), air enters dehumidification evaporator 8. Through its cooling action, dehumidification evaporator 8 condenses water vapor in the air into liquid water, which is then discharged, achieving dehumidification. Pre-cooling heat exchanger 7 and dehumidification evaporator 8 work in tandem, automatically adjusting their operating state based on the air temperature. In high-temperature environments, pre-cooling heat exchanger 7 pre-cools the air, reducing the subsequent cooling load on dehumidification evaporator 8 and improving dehumidification speed and effectiveness. In low-temperature environments, pre-cooling heat exchanger 7 ceases operation, avoiding unnecessary energy consumption. Meanwhile, dehumidification evaporator 8 maintains stable dehumidification, ensuring efficient dehumidification at varying ambient temperatures, meeting the needs of locations with stringent humidity requirements.

[0054] After being discharged from dehumidification evaporator 8, the dehumidified air enters heat recovery heat exchanger 9. Heat recovery heat exchanger 9 recovers the cooling or heat from the exhaust air. This recovered energy can be used to preheat fresh air entering the equipment or other media requiring heating, thus achieving energy recycling. After being treated by heat recovery heat exchanger 9, the air is discharged from the exhaust port of housing 1, completing the dehumidification process.

[0055] In this embodiment, the circulating pressurizing assembly is provided to pressurize the interior of the pre-cooling heat exchanger 7 and the dehumidifying evaporator 8 during the dehumidification process of the dehumidifying evaporator 8, thereby increasing the air pressure. This operation improves the dehumidification effect of the dehumidifying evaporator in many aspects, as follows:

[0056] Enhanced heat exchange: According to the principles of thermodynamics, increasing air pressure increases air density. In the dehumidification evaporator 8, air exchanges heat with the refrigerant on the evaporator surface. Increased air density means more air molecules are contained per unit volume. More air molecules come into contact with the evaporator surface, increasing the contact area and opportunities for heat exchange. This speeds up heat transfer between the air and the refrigerant, allowing water vapor in the air to condense more quickly, thereby improving dehumidification efficiency.

[0057] Lowering the dew point: The dew point of air refers to the temperature at a given pressure at which the water vapor in the air reaches saturation and condenses into liquid water. As air pressure increases, the dew point decreases. This means that under the same temperature conditions, pressurized air is more likely to reach saturation, and water vapor is more likely to condense into liquid water. Therefore, the dehumidification evaporator 8 can achieve effective dehumidification at lower temperatures, reducing the cooling capacity requirements of the refrigeration system and improving the stability and reliability of dehumidification.

[0058] Under high temperature and high humidity conditions:

[0059] In hot and humid summer environments, when not pressurized, the dehumidification evaporator 8 needs to cool the air to a relatively low temperature (e.g., 10°C) to condense and dehumidify the water vapor in the air. This consumes a large amount of refrigeration energy and slows the dehumidification process. When the circulating pressurization component pressurizes the interior of the dehumidification evaporator 8, the air pressure increases and the dew point temperature decreases. At this point, the dehumidification evaporator 8 only needs to cool the air to approximately 15°C to saturate the air and achieve dehumidification through condensation of the water vapor. This not only reduces the energy consumption of the refrigeration system but also speeds up the dehumidification process, reducing the indoor humidity to a comfortable range in a shorter time.

[0060] Under low temperature and low humidity conditions:

[0061] In winter or low-temperature environments, the air's humidity is naturally low, but conventional dehumidification equipment can be ineffective due to insufficient contact between the air and the heat exchanger. Pressurization increases the air's density, creating closer contact with the surface of the dehumidification evaporator 8 and enhancing heat exchange. Even in low-temperature environments, this system effectively removes trace amounts of water vapor from the air, ensuring stable and accurate dehumidification. This meets the needs of environments with extremely high humidity requirements, such as precision instrument manufacturing workshops and electronic chip production plants.

[0062] like Figure 8 As shown, in this embodiment, the heat exchanger body adopts a spiral heat exchange tube 32 and a heat exchange plate 33 provided on the heat exchange tube 32.

[0063] like Figure 2 As shown, the dehumidification mechanism also includes a primary condensing heat exchanger and a secondary subcooling heat exchanger and a compressor 4 arranged in the shell 1. The primary condensing heat exchanger is used to dissipate heat for the high-temperature and high-pressure refrigerant generated by the compressor compression, so that it condenses into liquid; the secondary subcooling heat exchanger further cools the condensed refrigerant; during operation, the compressor 4 controls the refrigerant to flow through the primary condensing heat exchanger and the secondary subcooling heat exchanger in turn for heat dissipation and subcooling, and the refrigerant, under the regulation of the electronic expansion valve 5, accurately flows into the pre-cooling heat exchanger 7 and the dehumidification evaporator 8.

[0064] In this embodiment, during the operation of a multi-heat exchanger-based regenerative pre-cooling dehumidification system, compressor 4 plays a central driving role, controlling the refrigerant's circulation within the dehumidification mechanism. After exiting compressor 4, the refrigerant flows sequentially through the primary condensing heat exchanger and the secondary subcooling heat exchanger for heat dissipation and subcooling. Subsequently, under the regulation of electronic expansion valve 5, it flows precisely into the pre-cooling heat exchanger 7 and dehumidification evaporator 8. After completing the dehumidification function, it returns to compressor 4, completing the cycle.

[0065] After high-temperature, high-pressure gaseous refrigerant is discharged from compressor 4, it first enters the primary condensing heat exchanger. Here, the refrigerant exchanges heat with the external environment, releasing a large amount of heat it carries, and gradually condenses the refrigerant from gas to liquid. The primary condensing heat exchanger uses air or water cooling to dissipate heat, rapidly reducing the refrigerant temperature.

[0066] After condensing in the primary condensing heat exchanger, the liquid refrigerant is still relatively hot. The secondary subcooling heat exchanger further cools this liquid refrigerant to a lower temperature. This secondary subcooling process reduces the amount of flash gas released during the refrigerant's expansion process and improves the refrigerant's evaporative heat absorption efficiency in the precooling heat exchanger 7 and dehumidification evaporator 8.

[0067] 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 pre-cooling heat exchanger 7 and the dehumidification evaporator 8 in real time based on the dehumidification equipment's operating conditions and actual needs. This precise flow control ensures that the refrigerant reaches the optimal evaporation state in both heat exchangers, improving refrigerant utilization efficiency.

[0068] In this embodiment, through the compression action of the compressor 4 and the heat dissipation and supercooling treatment of the primary condensing heat exchanger and the secondary supercooling heat exchanger, the refrigerant can achieve efficient evaporation heat absorption in the pre-cooling heat exchanger 7 and the dehumidification evaporator 8, thereby quickly reducing the air temperature, making it easier for water vapor in the air to condense into liquid water, and improving the dehumidification efficiency.

[0069] Three fixed shells 26 are arranged in the shell body 1 between the air intake end and the exhaust end. The adjacent ends of the three fixed shells 26 are provided with processing channels 27 that are interconnected. The pre-cooling heat exchanger 7, the dehumidification evaporator 8 and the full heat recovery heat exchanger 9 are arranged in the processing channels 27 opened in the three fixed shells 26 from the air intake end to the exhaust end, and the opening position of the processing channel 27 of each fixed shell 26 is provided with a guide component for controlling the unidirectional flow of air. The guide component controls the air to flow through the pre-cooling heat exchanger 7, the dehumidification evaporator 8 and the full heat recovery heat exchanger 9 in sequence from the air intake end to the exhaust end.

[0070] The circulating pressurizing component includes two pressurizing parts respectively arranged on the fixed shell 26 where the pre-cooling heat exchanger 7 and the dehumidification evaporator 8 are installed, and a circulating part arranged on the two fixed shells 26 for performing cyclic pressurization and depressurization operations. When the circulating part controls one of the pressurizing parts to pressurize the processing channel 27 in the fixed shell 26, the other pressurizing part releases the pressure on the processing channel 27 in the other fixed shell 26.

[0071] like Figures 1-10As shown, in this embodiment, the cyclic pressurization assembly alternately pressurizes and releases the processing channel 27, creating a certain pressure fluctuation within the processing channel 27 of the fixed housing 26. This pressure fluctuation promotes closer contact between the air and the surfaces of the pre-cooling heat exchanger 7 and the dehumidifying evaporator 8, thereby enhancing the intensity and efficiency of heat exchange. In the pre-cooling heat exchanger 7, the stronger heat exchange reduces the air temperature more quickly; in the dehumidifying evaporator 8, the water vapor in the air condenses more quickly, improving the speed and effectiveness of dehumidification.

[0072] The alternating pressurization and depressurization of the cyclic pressurization assembly prevents localized accumulation or poor air flow within the processing channel 27, allowing air to flow more evenly through each heat exchanger, thereby improving the overall dehumidification system's processing capacity and stability. Compared to traditional dehumidification processes, the alternating pressurization and depressurization of the cyclic pressurization assembly provided in this embodiment further enhances dehumidification efficiency and effectiveness while maintaining effective dehumidification.

[0073] like Figure 9 and Figure 10 As shown, the pressure member includes a pressure column 12 installed on the fixed shell 26 in the vertical direction, a sealing disk 35 that is slidably sealed and penetrates the pressure groove 34, and a driving rod 13 whose bottom end passes through the top of the pressure column 12 in the pressure groove 34 in the vertical direction and is connected to the sealing disk 35; a pressure groove 34 is opened at the bottom end of the pressure column 12, and the pressure groove 34 is connected to the processing channel 27 in the fixed shell 26. The pressure column 12 serves as the main supporting structure for the pressure operation, provides an installation space for the sealing disk 35 and the driving rod 13, and realizes the influence of the pressure operation on the air pressure in the processing channel 27 through the connection between the pressure groove 34 and the processing channel 27; the main function of the sealing disk 35 is to change the effective volume of the pressure groove 34 during movement, thereby adjusting the air pressure of the corresponding processing channel 27 in the fixed shell 26.

[0074] During operation, the circulation component controls the two driving rods 13 to move synchronously in opposite directions along the rod body. When one driving rod 13 drives the sealing disk 35 to move toward the bottom of the pressurized groove 34, the corresponding processing channel 27 in the fixed shell 26 is pressurized; at the same time, the other driving rod 13 drives the sealing disk 35 to move toward the top of the pressurized groove 34, and the corresponding processing channel 27 in the fixed shell 26 is depressurized.

[0075] like Figure 9 and Figure 10As shown, in this embodiment, in the dehumidification evaporator 8, the alternating pressurization and depressurization operations can make the water vapor in the air reach condensation conditions more quickly. When pressurized, the air pressure increases, the dew point temperature decreases, and the water vapor is more likely to condense into liquid water; when depressurized, the air flow is smoother, which is conducive to the discharge of the condensed liquid water, thereby accelerating the dehumidification speed and improving the dehumidification effect. By alternating pressurization and depressurization operations, the air pressure in the processing channel 27 can be kept relatively stable, avoiding the problem of unstable dehumidification process caused by excessive pressure fluctuations. A stable dehumidification process can ensure that the dehumidification equipment can achieve the expected dehumidification effect under various working conditions, thereby improving the reliability and stability of the dehumidification system.

[0076] Compared to traditional continuous pressurization, alternating pressurization and depressurization reduces energy consumption in the pressurizing components while ensuring effective dehumidification. This is because while the processing channels 27 in one fixed shell 26 are pressurized, the processing channels 27 in the other fixed shell 26 are depressurized. This reduces unnecessary energy consumption and improves the energy efficiency of the entire device. Alternating pressurization and depressurization allows the various components of the dehumidification system to operate more harmoniously, reducing system inefficiencies caused by pressure mismatches or energy waste. By optimizing the system's operation, the operating costs of the device are reduced and its economic efficiency is improved.

[0077] like Figure 9 and Figure 10 As shown, the circulating part includes a fixed rod 14 arranged on the fixed shell 26 in the vertical direction and located between the two driving rods 13, a rotating rod 15 connected to the top of the fixed rod 14 by rotating in the middle of the rod body, two sliding blocks 17 that slide through different sliding grooves 16 respectively, and a circulating driving structure arranged on the fixed shell 26 and controlling the up and down cyclic swing of one end of the rotating rod 15. Sliding grooves 16 are provided at both ends of the rotating rod 15 along the length direction, and the two sliding blocks 17 are fixedly provided on the top of different driving rods 13 respectively, and a limiting block 19 is fixed on the side of each sliding block 17; the limiting block 19 slides through the limiting groove 18 provided on the wall of the sliding groove 16.

[0078] In this embodiment, the circulating drive structure starts to work, controlling one end of the rotating rod 15 to swing upward. Since the middle part of the rotating rod 15 is rotatably connected to the top of the fixed rod 14, when one end swings upward, the other end must swing downward. The sliding block 17 moves to drive the drive rod 13: as the rotating rod 15 swings, the sliding block 17 slides in the sliding groove 16. The sliding block 17 fixed on the top of the drive rod 13 at one end moves upward as the end of the rotating rod 15 swings upward, thereby driving the drive rod 13 to move upward; the sliding block 17 fixed on the top of the drive rod 13 at the other end moves downward as the end of the rotating rod 15 swings downward, thereby driving the drive rod 13 to move downward. During the sliding process of the sliding block 17, the limit block 19 slides in the limit groove 18, limiting the sliding direction and range of the sliding block 17, ensuring that the sliding block 17 can accurately drive the drive rod 13 to move up and down, avoiding system failures caused by the displacement or falling off of the sliding block 17, and ensuring the stability and reliability of the circulation part. When one drive rod 13 moves upward, it drives the connected sealing disc 35 toward the top of the pressurized groove 34, depressurizing the corresponding processing channel 27 within the fixed housing 26. Simultaneously, the other drive rod 13 moves downward, driving the connected sealing disc 35 toward the bottom of the pressurized groove 34, depressurizing the corresponding processing channel 27 within the fixed housing 26. The circular drive structure operates continuously, causing the rotating rod 15 to oscillate up and down in a continuous cycle, thereby achieving synchronous movement of the two drive rods 13 in opposite directions along the rod body, completing the alternating pressurization and depressurization operations.

[0079] In this embodiment, the circulation element can adjust the swing amplitude and frequency of the rotating rod 15 through the circulation drive structure according to different ambient temperatures, humidity levels, and dehumidification requirements, thereby varying the intensity and speed of pressurization and depressurization, enabling the dehumidification system to better adapt to various operating conditions, improving the dehumidification effect and system adaptability. Furthermore, by achieving alternating pressurization and depressurization operations through precise mechanical transmission, unnecessary energy consumption is reduced compared to traditional pressurization methods. The circulation drive structure can adjust operating parameters according to actual needs, avoiding energy waste and improving the energy efficiency of the entire dehumidification system.

[0080] like Figure 9 and Figure 10 As shown, the circulating drive structure includes a transmission rod 23 arranged in the vertical direction and the top of which is rotated and connected to the rotating rod 15 and deviated from the middle position, and a driving motor arranged on a fixed shell 26 and provided with a rotating disk 22 at the output end, and the end face of the rotating disk 22 is rotated and connected to the bottom end of the transmission rod 23 and deviated from the center position.

[0081] In this embodiment, when the drive motor starts working, its output end drives the rotating disk 22 to rotate. Because the end face of the rotating disk 22 is rotatably connected to the bottom end of the transmission rod 23, during the rotation of the rotating disk 22, the bottom end of the transmission rod 23 will perform a portion of the trajectory of the circular motion as the rotating disk 22 rotates, thereby generating an up-and-down displacement. The top of the transmission rod 23 is rotatably connected to the shaft of the rotating rod 15, which is rotatably connected to the shaft. When the bottom end of the transmission rod 23 generates an up-and-down displacement, the transmission rod 23 rotates around its connection point with the rotating rod 15 and transmits this up-and-down force to the rotating rod 15. Because the middle portion of the rotating rod 15 is rotatably connected to the top of the fixed rod 14, under the action of the transmission rod 23, the rotating rod 15 will swing up and down in a circular motion around the fixed rod 14 as the axis.

[0082] like Figure 7 As shown, in this embodiment, a guide assembly is provided for controlling the unidirectional flow of air from the air intake end to the air exhaust end, and the guide assembly includes a guide plate 21 detachably mounted on the two ends of the processing channel 27 opened on the fixed shell 26, a sealing block 29 fitted on the opening position of the guide hole 28 on the end face of the guide plate 21 adjacent to the exhaust end, a limit spring 30 passing through the guide hole 28 and connected to the sealing block 29 at one end, and a fixed block 31 arranged on the opening position of the guide hole 28 on the guide plate 21 adjacent to the air intake end and connected to the limit spring 30.

[0083] In this embodiment, the guide assembly and the circulating pressurizing assembly cooperate to work as follows:

[0084] 1. Initial state

[0085] When the pressurization and depressurization operations are not being performed, the sealing block 29 in the guide assembly is in the initial position of the guide hole 28 adjacent to the exhaust end opening under the action of the limit spring 30, closing the guide hole 28 to restrict reverse flow and ensure that air can only flow in one direction from the intake end to the exhaust end.

[0086] The circulating pressurizing assembly is in a stationary state, and the two driving rods 13 are respectively located at corresponding positions, driving the sealing disk 35 to be at an initial height in the pressurizing groove 34. At this time, the air pressure in the processing channel 27 is in a relatively stable state.

[0087] 2. Pressurization stage

[0088] When the circulation drive structure is started and drives one end of the rotating rod 15 to swing upward, the sealing disk 35 connected to the driving rod 13 at this end moves to the bottom of the pressurizing groove 34 to pressurize the corresponding processing channel 27 in the fixed shell 26.

[0089] The pressurization operation increases the air pressure within the processing channel 27. When the air pressure becomes greater than the force of the limit spring 30, which pushes the sealing disk 35 open, the air, under the action of the pressure, flows more rapidly through the guide hole 28 toward the exhaust port. At this time, the sealing block 29 in the guide assembly is further affected by the air pressure, but the limit spring 30 provides a certain reaction force, so that the sealing block 29 will not be easily completely pushed open. Instead, it will move a certain distance within the guide hole 28 according to the pressure, keeping the guide hole 28 in a properly open state, ensuring that air can pass smoothly and maintain unidirectional flow.

[0090] At the same time, another driving rod 13 drives the sealing disk 35 to move toward the top of the pressurized groove 34, and releases the pressure on the corresponding processing channel 27 in the fixed shell 26. The air pressure in the processing channel 27 is reduced, but due to the one-way flow restriction of the guide component, the air will not flow back from the exhaust end to the intake end.

[0091] 3. Pressure release stage

[0092] As the circulating drive structure continues to operate, the swing direction of the rotating rod 15 changes, the previously pressurized processing channel 27 begins to release pressure, the sealing disk 35 moves to the top of the pressurized groove 34, and the air pressure in the processing channel 27 gradually returns to normal.

[0093] At this time, the sealing block 29 in the guide assembly slowly moves to the initial position under the action of the limit spring 30, but still maintains a certain open state, allowing the remaining air in the processing channel 27 to continue to flow to the exhaust end until the pressure is balanced.

[0094] The previously depressurized processing channel 27 begins to be pressurized, and the air pressure in the processing channel 27 increases, and flows rapidly to the exhaust end through the guide hole 28. The guide component once again plays its unidirectional flow restriction role to ensure unidirectional flow of air.

[0095] like Figure 2 As shown, a partition plate 6 is horizontally arranged in the shell 1 to separate the pre-cooling heat exchanger 7, the dehumidification evaporator 8 and the full heat recovery heat exchanger 9 from the compressor 4, and a water collecting block 20 is arranged at the bottom of the partition plate 6 below the fixed shell 26 of the pre-cooling heat exchanger 7 and the dehumidification evaporator 8, and a drain pipe is arranged at the bottom of the water collecting block 20, and a control valve is arranged on the drain pipe.

[0096] 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 backflow of air, and ensuring the stable operation of the dehumidification system.

[0097] A heat recovery pre-cooling dehumidification method based on multiple heat exchangers comprises the following steps:

[0098] S1: Air introduction: The dehumidifier is started, and outside air enters the dehumidifier through the air inlet. The air temperature and humidity are detected, and the air flows sequentially to the processing channel 27 of the subsequent fixed shell 26 under the guidance of the air flow path. Based on the comprehensive data of humidity and temperature, the operating parameters of the subsequent heat exchangers in each stage are dynamically adjusted;

[0099] S2: Precooling stage: When the air temperature is greater than 28°C, the precooling heat exchanger 7 is activated, and the air enters the processing channel 27 of the fixed shell 26 equipped with the precooling heat exchanger 7, exchanges heat with the precooling heat exchanger 7, and reduces the air temperature, completing the precooling process; when the air temperature is less than 28°C, the precooling heat exchanger 7 is closed, and the air passes directly through the precooling heat exchanger 7;

[0100] S3: Dehumidification stage: The pre-cooled air enters the processing channel 27 of the fixed shell 26 equipped 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 discharged;

[0101] S4: Full heat recovery stage: The dehumidified air enters the processing channel 27 of the fixed shell 26 equipped 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;

[0102] S5: Air discharge: The air after full heat recovery treatment is discharged from the dehumidification equipment from the exhaust end.

[0103] In this embodiment, the alternating pressurization and depressurization of the cyclic pressurization assembly enhances the flow velocity and turbulence of air within the processing channel 27. During the pre-cooling phase, the accelerated air flow ensures more complete contact between the air and the pre-cooling heat exchanger 7, improving heat exchange efficiency and further reducing air temperature. During the dehumidification phase, the turbulent air flow facilitates heat exchange with the dehumidification evaporator 8, promoting condensation of water vapor and enhancing the dehumidification effect.

[0104] The unidirectional flow restriction provided by the guide assembly ensures that air flows in the intended direction within the processing channel 27, preventing air turbulence and backflow. Combined with the circulation and pressurization assembly, this creates a more orderly flow of air between the heat exchangers, facilitating heat transfer and recovery, and improving the efficiency of the full heat recovery phase.

[0105] 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 the processing channel 27 of each fixed shell 26, which only allows air to flow along the air flow path from the air inlet end to the exhaust end.

[0106] The cyclic pressurizing assembly includes two pressurizing members arranged on the fixed shell 26 for mounting the pre-cooling heat exchanger 7 and the dehumidifying evaporator 8, and a circulating member for controlling the cyclic pressurization and depressurization of the two pressurizing members; the method further includes:

[0107] Circulation pressurization and depressurization steps: When the air flows through the fixed shell 26 processing channel 27 equipped with the pre-cooling heat exchanger 7 and the dehumidification evaporator 8, the circulation component controls the two pressurizing components to perform cyclic pressurization and depressurization operations on the corresponding processing channels 27 respectively, thereby increasing the pressure inside the processing channels 27.

[0108] The pressurizing member includes a pressurizing column 12 mounted vertically on the fixed housing 26, a sealing plate 35 slidingly and sealingly inserted into a pressurizing groove 34 of the pressurizing column 12, and a driving rod 13 connected to the sealing plate 35 and passing through the top of the pressurizing column 12.

[0109] The circulation member includes a fixed rod 14, a rotating rod 15, two sliding blocks 17 and a circulating drive structure; the fixed rod 14 is arranged in the middle position between the two mounting pressure member fixed shells 26 in the vertical direction, the middle part of the rotating rod 15 is rotatably connected to the top of the fixed rod 14, and the two sliding blocks 17 are respectively slidably penetrated in the sliding grooves 16 of the rods at both ends of the rotating rod 15, and are respectively fixedly arranged at the tops of different driving rods 13, and a limit block 19 is provided on the side of the sliding block 17, and the limit block 19 is slidably penetrated in the limit groove 18 of the wall of the sliding groove 16;

[0110] The specific steps of cyclic pressurization and depressurization are as follows: the circulating drive structure drives one end of the rotating rod 15 to swing up and down in a circular motion. 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 in opposite directions along the rod body. When one driving rod 13 drives the sealing disk 35 to move to the bottom of the pressurization groove 34, the corresponding processing channel 27 in the fixed shell 26 is pressurized; at the same time, the other driving rod 13 drives the sealing disk 35 to move to the top of the pressurization groove 34, and the corresponding processing channel 27 in the fixed shell 26 is depressurized, forming air convection in the processing channel 27.

[0111] During the pre-cooling stage, the pre-cooling heat exchanger 7 uses the cooling energy generated by the compressor 4 to cool the air entering its processing channel 27, thereby reducing the air temperature to a preset suitable dehumidification temperature range.

[0112] During the full heat recovery stage, the full heat recovery heat exchanger 9 uses 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 to be heated, thereby realizing efficient recycling of energy.

[0113] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat recovery pre-cooling 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: An air inlet end and an air outlet end are provided on symmetrical sides of the shell (1), and the dehumidification mechanism includes a pre-cooling heat exchanger (7), a dehumidifying evaporator (8), and a full heat recovery heat exchanger (9) which are arranged in sequence from the air inlet end to the air outlet end within the shell (1), and a circulating pressurizing component arranged on the pre-cooling heat exchanger (7) and the dehumidifying evaporator (8) for cooperative pressurization; the full heat recovery heat exchanger (9) is used to recover cold or heat in the exhaust air; The pre-cooling heat exchanger (7) and the dehumidifying evaporator (8) cooperate to process the dehumidification of high and low temperature air; the circulating pressurizing component pressurizes the interior of the pre-cooling heat exchanger (7) and the dehumidifying evaporator (8) to increase the air pressure; When the air temperature is greater than 28°C, the pre-cooling heat exchanger (7) operates to pre-cool the air, and the dehumidifying evaporator (8) dehumidifies the pre-cooled air; when the air temperature is less than or equal to 28°C, the pre-cooling heat exchanger (7) stops operating, and the air passes through the pre-cooling heat exchanger (7) and enters the dehumidifying evaporator (8) for dehumidification; Three fixed shells (26) are arranged between the air inlet end and the exhaust end in the shell (1), and mutually interpenetrating processing channels (27) are opened at adjacent ends of the three fixed shells (26). The precooling heat exchanger (7), the dehumidification evaporator (8) and the full heat recovery heat exchanger (9) are arranged in the processing channels (27) opened in the three fixed shells (26) in sequence from the air inlet end to the exhaust end, and a guide component for controlling the unidirectional flow of air is provided at the opening position of the processing channel (27) of each fixed shell (26), and the guide component controls the air to flow through the precooling heat exchanger (7), the dehumidification evaporator (8) and the full heat recovery heat exchanger (9) in sequence from the air inlet end to the exhaust end.

2. The heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers according to claim 1, characterized in that: The dehumidification mechanism further includes a primary condensing heat exchanger and a secondary subcooling heat exchanger and a compressor (4) arranged in the housing (1). The primary condensing heat exchanger is used to dissipate heat from the high-temperature and high-pressure refrigerant generated by 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 condensing heat exchanger and the secondary subcooling heat exchanger in sequence for heat dissipation and subcooling treatment, and the refrigerant, under the regulation of the electronic expansion valve (5), accurately flows into the precooling heat exchanger (7) and the dehumidification evaporator (8).

3. The heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers according to claim 1, characterized in that: The circulating pressurizing component includes two pressurizing parts respectively arranged on the fixed shells (26) on which the pre-cooling heat exchanger (7) and the dehumidifying evaporator (8) are installed, and a circulating part arranged on the two fixed shells (26) for performing cyclic pressurization and depressurization operations. When the circulating part controls one of the pressurizing parts to pressurize the processing channel (27) in the fixed shell (26), the other pressurizing part releases the pressure on the processing channel (27) in the other fixed shell (26).

4. The heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers according to claim 3, characterized in that: The pressurizing member includes a pressurizing column (12) mounted on a fixed shell (26) in a vertical direction, a sealing disk (35) slidingly sealed and inserted into a pressurizing groove (34), and a driving rod (13) whose bottom end vertically penetrates the top of the pressurizing column (12) in the pressurizing groove (34) and is connected to the sealing disk (35); a pressurizing groove (34) is provided at the bottom end of the pressurizing column (12), and the pressurizing groove (34) is connected to a processing channel (27) in the fixed shell (26); During operation, the circulation member controls the two driving rods (13) to move synchronously in opposite directions along the rod body. When one driving rod (13) drives the sealing disk (35) to move toward the bottom of the pressurizing groove (34), the processing channel (27) in the corresponding fixed shell (26) is pressurized; at the same time, the other driving rod (13) drives the sealing disk (35) to move toward the top of the pressurizing groove (34), and the processing channel (27) in the corresponding fixed shell (26) is depressurized.

5. The heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers according to claim 4, characterized in that: The circulating member comprises a fixed rod (14) arranged on a fixed shell (26) in a vertical direction and located between two driving rods (13), a rotating rod (15) connected to the top of the fixed rod (14) by rotating the middle of the rod body, two sliding blocks (17) respectively slidingly penetrated in different sliding grooves (16), and a circulating driving structure arranged on the fixed shell (26) and controlling one end of the rotating rod (15) to swing up and down in a circular motion, wherein the rod bodies at both ends of the rotating rod (15) are provided with sliding grooves (16) along the length direction, the two sliding blocks (17) are respectively fixedly arranged on the tops of different driving rods (13), and a limiting block (19) is fixedly provided on the side of each sliding block (17); the limiting block (19) is slidably penetrated in the limiting groove (18) provided on the groove wall of the sliding groove (16).

6. The heat recovery pre-cooling dehumidification equipment based on multiple heat exchangers according to claim 5, characterized in that: The circulating drive structure comprises a transmission rod (23) arranged in a vertical direction and having a top rotationally connected to a rotating rod (15) whose rod body deviates from the middle position, and a driving motor arranged on a fixed shell (26) and having a rotating disk (22) arranged at the output end, wherein the end surface of the rotating disk (22) deviates from the center position and is rotationally connected to the bottom end of the transmission rod (23).

7. A regenerative pre-cooling dehumidification method based on multiple heat exchangers, applied to the regenerative pre-cooling dehumidification device based on multiple heat exchangers according to claim 1, characterized in that it comprises the following steps: S1: Air introduction: The dehumidification equipment is started, and the outside air enters the dehumidification equipment through the air inlet end, and the air temperature is detected. Under the guidance of the air flow path, the air flows sequentially to the processing channel (27) of the subsequent fixed shell (26); 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 exchanges heat with the precooling heat exchanger (7), so that the air temperature is reduced, completing 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.

8. The dehumidification method based on heat recovery and pre-cooling of multiple heat exchangers according to claim 7, characterized in that: During the air introduction step, the dehumidification device is provided with a one-way guide structure at the air inlet end and the opening position of the processing channel (27) of each fixed shell (26), 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.

9. A heat recovery pre-cooling dehumidification method based on multiple heat exchangers according to claim 7 or 8, characterized in that: The cyclic pressurizing assembly includes two pressurizing members arranged on a fixed shell (26) for mounting a pre-cooling heat exchanger (7) and a dehumidifying evaporator (8), and a circulating member for controlling the cyclic pressurization and depressurization of the two pressurizing members; the method further includes: Circular pressurization and depressurization step: When air flows through the processing channel (27) of the fixed shell (26) provided with the pre-cooling heat exchanger (7) and the dehumidification evaporator (8), the circulation component controls the two pressurizing components to perform cyclic pressurization and depressurization operations on the corresponding processing channels (27) respectively, thereby increasing the pressure in the processing channels (27).

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