Dehumidifying device and cabinet

Abstract

The application relates to a dehumidifying device and a box, and relates to the technical field of power equipment protection. The dehumidifying device comprises a heat exchange part, a liquid accumulation part and a reverse stopping assembly. The heat exchange part comprises a heat absorption section and a cooling section. The liquid accumulation part is arranged below the heat absorption section and is used for collecting condensed liquid formed by condensation of air in the box. The liquid accumulation part is provided with a water outlet. The reverse stopping assembly is arranged in the liquid accumulation part and can move along the height direction of the liquid accumulation part to control the opening and closing of the water outlet. The heat absorption section of the heat exchange part is used for absorbing heat of air in the box, so that the surface temperature of the heat absorption section is reduced to below the dew point, water vapor in the air is condensed into liquid water, and the liquid water is collected by the liquid accumulation part. The condensed water in the liquid accumulation part is automatically and unidirectionally discharged through the reverse stopping assembly, external gas backflow is effectively prevented, the whole dehumidifying process does not need to be driven by an external energy source, no consumables need to be replaced, and efficient and reliable dehumidification is achieved.

Description

Technical Field

[0001] This application relates to the field of power equipment protection technology, and in particular to a dehumidification device and enclosure. Background Technology

[0002] Inside the enclosure of power electronic equipment, the heat generated by the internal components creates a high-temperature environment, while the enclosure walls remain relatively cool due to exposure to ambient air. When the warm, humid air comes into contact with the cool inner walls, it rapidly cools below its dew point, causing condensation to form on the inner walls and component surfaces. This accumulation of condensate can lead to short circuits, equipment corrosion, and decreased insulation performance, seriously threatening the safe operation of the equipment.

[0003] Currently, this problem is mainly solved by installing dehumidifiers, which use active cooling to lower the temperature of the heat exchange surface below the dew point of the air, thereby condensing and collecting moisture. However, this solution requires continuous power consumption, increasing the operating cost of the equipment; at the same time, it cannot effectively prevent humid external air from seeping back into the system through the drainage channel when draining condensate, which not only reduces dehumidification efficiency but may even exacerbate the humidity problem inside the unit. Utility Model Content

[0004] To address the problems of high energy consumption and ineffective prevention of backflow of external air in existing dehumidification technologies, this application provides a dehumidification device and enclosure.

[0005] The dehumidification device and housing provided in this application adopt the following technical solution: A dehumidification device, characterized in that it comprises: A heat exchanger includes an absorption section for absorbing heat and a cooling section for releasing heat; A liquid collection component is located below the heat absorption section and is used to collect the condensate formed by the condensation of the heat absorption section. The liquid collection component is provided with a drain outlet. A check valve assembly is located inside the liquid accumulation component and can move along the height direction of the liquid accumulation component as condensate flows in, thereby controlling the opening and closing of the drain outlet.

[0006] By adopting the above technical solution, the heat-absorbing section of the heat exchanger absorbs heat from the air, lowering its surface temperature below the dew point, thereby causing water vapor in the air to condense into liquid water on its surface. The generated condensate flows down the surface of the heat-absorbing section under gravity and is collected by the liquid accumulation component. At the same time, the heat absorbed by the heat-absorbing section is rapidly transferred to the cooling section outside the chamber through the efficient heat transfer mechanism inside the heat exchanger and released into the external environment. This continuous cycle of heat absorption, heat transfer, and heat release allows the heat-absorbing section to maintain a stable low-temperature surface, thereby achieving continuous dehumidification. The collected condensate is finally automatically and unidirectionally discharged through the backflow preventer, effectively preventing backflow of external gas. The entire process from dehumidification to drainage requires no external energy drive and no replacement of any consumables, achieving efficient, reliable, and low-cost intelligent dehumidification.

[0007] In one specific implementation, the liquid accumulation component includes a liquid accumulation chamber and a drain pipe connected to the lower end of the liquid accumulation chamber, the drain outlet is located at the end of the drain pipe, and the heat exchange element passes through the liquid accumulation chamber.

[0008] By adopting the above technical solution, the liquid collection chamber can receive the condensate dripping from the surface of the heat absorption section and guide it into the drain pipe with a smaller cross-sectional area. This structural change helps to quickly form water pressure in the drain pipe that is sufficient to drive the anti-reverse component to operate, thereby improving drainage efficiency and ensuring the smoothness of the entire collection and discharge process.

[0009] In one specific implementation, the anti-reverse component includes a float structure disposed within the drain pipe, the average density of the float structure being less than the density of the condensate, and the diameter of the drain outlet being smaller than the diameter of the float structure.

[0010] By adopting the above technical solution, and utilizing the combination of buoyancy and geometric constraints, when there is no water, the floating structure is lighter in weight because its average density is less than that of the condensate. Under the action of gravity, it seals itself on the smaller diameter drain outlet to achieve a reliable seal. When water accumulates, the floating structure is driven to float upward by buoyancy, thereby automatically opening the drain outlet. This solution has a simple structure, no vulnerable parts, reliable operation, and long service life.

[0011] In one specific implementation scheme, the float structure is a capsule-shaped structure or a hollow sphere structure; the upper part of the capsule-shaped structure is hollow, and the lower part is solid.

[0012] By adopting the above technical solutions, two different advantages of float structure implementation paths are provided. The capsule-shaped structure provides buoyancy through the upper hollow part and lowers the center of gravity through the lower solid part, forming a self-stabilizing effect of lowering the center of gravity, ensuring that it always maintains a vertical posture in the water, thereby improving sealing reliability and operational stability. The hollow sphere structure utilizes its isotropic geometric properties to form an effective sealing fit in any installation posture, and has the advantages of simple structure, low cost and strong adaptability. The two solutions can provide flexible choices for different application scenarios.

[0013] In one specific implementation, the inner wall of the drain pipe near the drain outlet is provided with an inverted conical surface, and the float structure contacts and seals with the inverted conical surface.

[0014] By adopting the above technical solution, the inverted conical surface can guide the float structure to accurately sit in the optimal sealing position, and transform the contact between the float structure and the inverted conical surface from uncontrollable point contact to stable and reliable line contact or surface contact, thereby improving the sealing reliability.

[0015] In one specific implementation, the anti-reverse component includes a limiting member, a sealing member, and an elastic member. The limiting member is fixed inside the liquid accumulation chamber, the sealing member and the elastic member are located inside the drain pipe, the elastic member is connected between the limiting member and the sealing member, and the sealing member slides and seals against the inner wall of the drain pipe.

[0016] By adopting the above technical solution, this solution provides another mechanical anti-reverse mechanism, which uses the pre-tightening force of the elastic element to achieve normal sealing. When there is no water, the thrust of the elastic element makes the seal press tightly against the valve seat. When the water pressure generated by the weight of the accumulated water is sufficient to overcome the pre-tightening force of the elastic element, the seal moves down to open the drainage. This solution has controllable and strong sealing force and good anti-backflow effect.

[0017] In one specific implementation, the heat exchanger is arranged vertically or inclined relative to the horizontal plane; when the heat exchanger is inclined, the projection of the heat absorption section from the penetration point on the liquid accumulation cavity to its outermost end is located within the projection range formed by the inner wall edge of the liquid accumulation cavity.

[0018] By adopting the above technical solution, the design gives the heat exchanger more flexible installation adaptability. Whether the heat exchanger is in an ideal vertical state or in an inclined state due to installation conditions, the condensate dripping from its surface can be reliably guided into the liquid accumulation chamber, eliminating the safety hazards caused by condensate dripping outside the liquid accumulation chamber due to installation angle issues, and improving the practicality and reliability of the device.

[0019] In one specific implementation, the length of the heat exchanger section is greater than the length of the cooling section.

[0020] By adopting the above technical solution, increasing the length of the heat absorption section is equivalent to increasing the effective condensation heat exchange area, thereby improving the dehumidification capacity per unit time; while appropriately shortening the cooling section helps the heat to dissipate outward more concentratedly. This design optimizes heat distribution and improves dehumidification efficiency without increasing the overall size of the device.

[0021] In one specific implementation, the heat exchanger is a tube with an internal cavity filled with a cooling medium; or, the heat exchanger is a solid metal thermally conductive structure.

[0022] By adopting the above technical solutions, heat pipes utilize the phase change cycle of the cooling medium for heat transfer, possessing extremely high equivalent thermal conductivity and thermal response speed, enabling them to start up under minimal temperature differences and exhibiting excellent efficiency; while solid metal heat-conducting structural components rely on solid-state heat conduction, although their efficiency is relatively lower, their structure is simpler, their cost is lower, and they are more robust and durable; the two solutions provide the preferred options for application scenarios with different performance and cost requirements.

[0023] A housing includes an internal space formed by housing wall panels, wherein a dehumidification device as described above is installed on the housing wall panels, wherein the heat absorption section of the heat exchange element is located in the internal space, and the cooling section is located outside the housing.

[0024] By adopting the above technical solution and installing this device on the enclosure, a continuous, automatic, and zero-energy-consumption anti-condensation and dehumidification environment is created inside the enclosure. Specifically, the heat generated by the operation of the electronic components inside the enclosure raises the internal air temperature and humidity. When this hot and humid air flows through the heat absorption section of the heat exchanger, which is in a low-temperature state, the water vapor it carries is forced to condense and precipitate. The condensate is automatically collected and discharged outside the enclosure. Throughout the process, the anti-reverse component ensures that untreated humid air, dust, and other impurities from the outside cannot enter in reverse. This solves the problem of water accumulation inside the equipment enclosure and improves the reliability, safety, and lifespan of the equipment in humid environments.

[0025] In summary, the beneficial technical effects of this application are as follows: This application achieves continuous dehumidification without external energy drive through the efficient heat transfer mechanism inside the heat exchanger; its heat absorption section maintains a stable low temperature surface by absorbing heat from the air inside the chamber, so that water vapor continuously condenses. After the condensate is collected by the liquid accumulation component, the anti-reverse component realizes automatic one-way drainage, which effectively solves the technical problems of high energy consumption and inability to prevent backflow of external air in traditional dehumidification solutions. Through its optimized structural design, this device ensures reliable sealing while providing flexible installation adaptability and higher dehumidification efficiency. It offers a maintenance-free anti-condensation solution for various power equipment enclosures, requiring no external power source, and significantly improves the operational reliability and service life of the equipment in humid environments. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the dehumidification device used to illustrate Embodiment 1.

[0027] Figure 2 This is a structural schematic diagram of the heat exchanger used to illustrate Embodiment 1.

[0028] Figure 3 This is a structural diagram used to illustrate the liquid accumulation component.

[0029] Figure 4 This is a schematic diagram showing the structure of the dehumidifier installed on the cabinet.

[0030] Figure 5 This is a structural schematic diagram illustrating the dehumidification device used in Example 2.

[0031] Figure 6 This is a schematic diagram illustrating the structure of the dehumidification device in Embodiment 3.

[0032] Figure 7 This is a schematic diagram illustrating the structure of the anti-reverse component in Embodiment 3.

[0033] Figure 8 This is a structural schematic diagram illustrating the dehumidification device of Embodiment 4.

[0034] Figure 9 This is a structural schematic diagram used to illustrate the heat exchanger of Embodiment 5.

[0035] Figure 10 This is a structural schematic diagram illustrating the dehumidification device of Example 6.

[0036] Explanation of reference numerals in the attached drawings: 1. Heat exchanger; 11. Heat absorption section; 12. Cooling section; 13. Heat exchange tube; 131. Cavity; 14. Solid metal heat-conducting structural component; 2. Liquid accumulation component; 21. Drain outlet; 22. Liquid accumulation chamber; 221. Mounting hole; 222. Edge; 23. Drain pipe; 231. Inverted conical surface; 3. Check valve assembly; 31. Float structure; 311. Capsule-shaped structure; 312. Hollow sphere structure; 32. Limiting component; 33. Sealing component; 34. Elastic component; 4. Box body; 41. Box body wall panel; 42. Internal space; 5. Dehumidification device. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0038] Example 1 Reference Figure 1-3 This application discloses a dehumidification device, which mainly includes a heat exchange component 1, a liquid collection component 2, and a backflow prevention component 3.

[0039] The heat exchanger 1 is the core functional component of the device, including a heat absorption section 11 for absorbing heat and a cooling section 12 for releasing heat. In this embodiment, the heat exchanger 1 is a heat exchange tube 13, which is a sealed tube with an internal cavity 131, made of copper or aluminum alloy with high thermal conductivity. The cavity 131 is evacuated and filled with an appropriate amount of cooling medium, such as deionized water or ethanol. This vacuum low-pressure environment can lower the boiling point of the cooling medium, allowing it to undergo a phase change under a small temperature difference, which greatly improves the response sensitivity and start-up performance of the device.

[0040] To achieve efficient circulation of the cooling medium, a capillary structure is provided on the inner wall of the cavity 131 of the heat exchange tube 13. As a preferred embodiment, the capillary structure is an axial microgroove machined along the inner wall of the cavity 131. This microgroove capillary structure can provide a strong capillary pumping force, which works in conjunction with gravity to drive the cooling medium to flow back stably to the heat absorption section 11, ensuring stable and reliable circulation of the cooling medium, avoiding the risk of local dry burning failure of the heat exchange tube 13 due to poor return of the cooling medium, and extending its service life.

[0041] The length of the heat absorption section 11 of the heat exchanger 1 is greater than the length of the cooling section 12. This design increases the effective condensation heat exchange area by increasing the length of the heat absorption section 11, thereby improving the dehumidification capacity per unit time. Meanwhile, appropriately shortening the cooling section 12 helps the heat to dissipate more concentratedly, forming a more significant temperature difference. This design optimizes the heat distribution and improves the dehumidification efficiency without increasing the overall size of the device.

[0042] The liquid collection component 2 is located below the heat absorption section 11 and is used to collect the condensate formed by the condensation of the heat absorption section 11. The liquid collection component 2 specifically includes a liquid collection chamber 22 and a drain pipe 23 connected to the bottom of the liquid collection chamber 22. The drain pipe 23 has a drain outlet 21 at its end. In this embodiment, the inner wall of the drain pipe 23 near the drain outlet 21 is designed as an inverted conical surface 231. In other embodiments, it can also be designed as an arc surface to provide an optimized sealing mating surface for the subsequent check valve assembly 3.

[0043] In this embodiment, the heat exchanger 1 is vertically inserted through the mounting hole 221 of the liquid accumulation chamber 22, that is, the heat exchanger 1 is vertically arranged relative to the horizontal plane; the liquid accumulation chamber 22 and the heat exchanger 1 can be integrally formed, or they can be connected and fixed by welding, threaded connection, bonding or interference fit.

[0044] The anti-reverse component 3 is disposed within the drain pipe 23 of the liquid accumulation component 2. It can move along the height of the drain pipe 23 as condensate flows into the liquid accumulation chamber 22, thereby controlling the opening and closing of the drain outlet 21. In this embodiment, the anti-reverse component 3 includes a float structure 31 disposed within the drain pipe 23. The average density of the float structure 31 is less than the density of the condensate (water) (1.0 g / cm³). 3 Furthermore, the diameter of the drain outlet 21 is smaller than the diameter of the float structure 31. This size matching ensures that the float structure 31 can reliably seal under its own weight when there is no water, and can move upward by buoyancy when water accumulates, so as to open the drain outlet 21 in time.

[0045] As a preferred embodiment, the float structure 31 is a capsule-shaped structure 311. The upper part of the capsule-shaped structure 311 is hollow, and the lower part is solid. In this embodiment, the center of gravity is located in the lower half of the overall height through a counterweight design. This design lowers the overall center of gravity through the lower solid part, forming a self-stabilizing effect of the center of gravity shifting downward, ensuring that the capsule-shaped structure 311 always maintains a stable vertical or nearly vertical posture in the water.

[0046] In this embodiment, the inverted conical surface 231 at the bottom of the drain pipe 23 forms a sealing fit with the capsule-shaped structure 311, and the cone angle of the inverted conical surface 231 matches the cone angle of the capsule-shaped structure 311, forming a continuous line contact seal or surface contact seal.

[0047] Reference Figure 4 This application also provides a housing, including but not limited to applications in power equipment such as energy storage boxes, energy storage cabinets, transformer boxes, and distribution boxes. This embodiment will be described in detail using an application in an energy storage box as an example.

[0048] Reference Figure 4 In this embodiment, the energy storage box 4 includes an internal space 42 formed by the box wall panel 41 and heating elements (such as battery modules, power devices, etc.) disposed in the internal space 42. The box wall panel 41 is equipped with all the aforementioned dehumidification devices 5 (for the specific structure of the dehumidification device 5, please refer to...). Figure 1-3 The dehumidification device 5 is installed at the bottom of the box 4. The heat absorption section 11 of the heat exchanger 1 is located inside the internal space 42 of the box 4, and the cooling section 12 is located outside the internal space 42. In this embodiment, the number of dehumidification devices 5 in the box 4 can be designed according to the actual dehumidification requirements.

[0049] In this embodiment, specifically, the bottom of the box wall panel 41 is provided with a fixing hole, and the liquid collection chamber 22 of the liquid collection component passes through and is fixed in the fixing hole. A sealing gasket is provided between its installation part and the box wall panel 41 to ensure the protection level of the box 4. Part of the structure of the liquid collection chamber 22 is located in the internal space 42 of the box 4, and the upper collection port edge 222 of the liquid collection chamber 22 is slightly higher than the installation plane inside the box 4, thereby preventing condensate from flowing back along the inner wall of the box 4. The heat absorption section 11 of the heat exchanger 1 is located in the internal space 42 of the box 4, and the cooling section 12 of the heat exchanger 1 and the drain pipe 23 at the lower end of the liquid collection chamber 22 are located outside the box 4.

[0050] After the dehumidification device 5 is installed, the heat absorption section 11 of the heat exchanger 1 is located inside the box, and the cooling section 12 is located outside the box. In actual operation, the heat generated by the heating element inside the box raises the internal air temperature and increases the relative humidity. When this hot and humid air flows through the outer surface of the heat absorption section 11 of the heat exchanger 1, which is in a low temperature state, the air temperature is rapidly reduced to below the dew point. The water vapor it carries undergoes a phase change on the outer surface of the heat absorption section 11, condenses and precipitates liquid water, and finally falls into the liquid accumulation chamber 22 below. The collected condensate flows into the drain pipe 23; when there is no water, the float structure 31 (capsule-shaped structure 311) relies on its own weight to stably seal on the inverted conical surface 231 of the drain pipe 23, achieving a reliable contact seal; when the water level rises, the float structure 31 (capsule-shaped structure 311) floats vertically upward under buoyancy without deflection, thus smoothly opening the drain outlet 21, allowing the water to be discharged. After drainage, the water level drops, and the float structure 31 (capsule-shaped structure 311) falls back stably under the action of gravity, resealing. Meanwhile, an efficient heat transfer process is taking place inside the heat exchanger 1: the liquid cooling medium absorbs heat from the air inside the chamber in the heat absorption section 11, undergoes a phase change and evaporates into steam. This process enables the surface of the heat absorption section 11 to maintain a stable low temperature, providing the necessary conditions for continuous dehumidification. The generated steam flows rapidly to the cooling section 12, which is in a low-temperature environment outside the chamber, under the action of the pressure difference inside the pipe. In the cooling section 12, heat is released to the external environment, and the cooling medium re-condenses into liquid. Under the action of the strong capillary pumping force generated by the capillary structure, the condensed cooling medium flows back stably to the heat absorption section 11, forming a continuous and efficient phase change cycle.

[0051] In this embodiment, the dehumidification device 5 achieves efficient dehumidification through the phase change circulation of the cooling medium inside the heat exchanger 1; the heat absorption section 11 continuously absorbs heat from inside the chamber to maintain a low-temperature condensation surface, causing water vapor to condense into water; the cooling section 12 releases heat to the outside environment, completing the heat transfer; the collected condensate is connected to the inverted conical surface 231 of the drain pipe 23 through the float structure 31 (capsule-shaped structure 311) to achieve reliable one-way drainage and sealing against backflow. The entire device, through its asymmetric heat exchange section design, optimized flow channel structure, and automatic anti-reverse mechanism, provides a continuous and reliable anti-condensation solution for various electrical equipment enclosures without external energy or maintenance. It effectively solves the technical problems of high energy consumption, frequent maintenance, and insufficient moisture-proof effect of traditional dehumidification solutions, and improves the operational safety and service life of various electrical equipment in humid environments.

[0052] Example 2 Reference Figure 5 The difference between this embodiment and Embodiment 1 is that the float structure 31 is a hollow sphere structure 312, which is made of plastic or corrosion-resistant lightweight metal. The average density of the hollow sphere structure 312 is less than the density of the condensate (i.e., the density of water, 1.0 g / cm³). 3 The inner diameter of the inverted conical surface 231 at the bottom of the drain pipe 23 is smaller than the diameter of the hollow sphere structure 312.

[0053] The hollow sphere structure 312 utilizes its isotropic geometric properties to form a self-centering effective sealing fit with the inverted conical surface 231 under any installation posture, and has a high tolerance for installation errors; this solution provides a more economical solution while ensuring basic sealing performance.

[0054] In practical applications, the spherical surface of the hollow sphere structure 312 and the inverted conical surface 231 inside the drain pipe 23 can form a good sealing contact; when the water level rises, the hollow sphere structure 312 floats with the water level and opens the drain outlet 21; when the water level drops, the sphere automatically falls back to its original position under the action of gravity and re-seals.

[0055] Example 3 Reference Figure 6 and Figure 7 The difference between this embodiment and embodiment one is that the anti-reverse component 3 in this embodiment includes a limiting member 32, a sealing member 33, and an elastic member 34. The limiting member 32 spans the inside of the liquid accumulation cavity 22 and is located above the inlet of the drain pipe 23. The sealing member 33 and the elastic member 34 are located inside the drain pipe 23. The elastic member 34 is connected between the limiting member 32 and the sealing member 33, providing an upward reset pre-tightening force for the sealing member 33. In this embodiment, the drain pipe 23 is a straight cylindrical pipe with a diameter equal to the diameter of the drain outlet 21. The outer edge of the sealing member 33 forms a sliding seal with the inner wall of the drain pipe 23. To further improve the sealing reliability, a sealing groove is opened on the sealing member 33 and a sealing ring is embedded.

[0056] The solution utilizes the pre-tightening force of the elastic element 34 to achieve a normal seal. When there is no water, the elastic element 34 presses the sealing element 33 tightly against the inner wall of the drain pipe 23 to achieve a reliable seal. When the condensate in the liquid accumulation chamber 22 and the drain pipe 23 accumulates, the water pressure generated by its weight is sufficient to overcome the pre-tightening force of the elastic element 34. The sealing element 33 moves downward and stretches the elastic element 34, causing the sealing element 33 to move out of the drain pipe 23 and open the drain outlet 21 to drain water. After drainage, the water pressure decreases, the elastic element 34 is compressed and drives the sealing element 33 to move upward and reset, resealing.

[0057] Example 4 Reference Figure 8 The difference between this embodiment and the first embodiment is that the heat exchanger 1 is inclinedly installed on the liquid accumulation chamber 22, that is, the heat exchanger 1 is inclined relative to the horizontal plane.

[0058] To ensure that condensate dripping from the surface of the heat-absorbing section 11 of the heat exchanger 1 can still be reliably collected when the heat exchanger 1 is installed at an angle, this embodiment sets a positional constraint condition: when projected vertically onto the bottom surface of the liquid accumulation cavity 22, the projection O'A' of the line connecting the penetration point O on the heat-absorbing section 11 of the heat exchanger 1 to its outermost end A is completely within the projection range of the inner wall edge 222 of the liquid accumulation cavity 22; this geometric constraint spatially ensures that no matter where the condensate drips from on the surface of the heat-absorbing section 11, its vertical landing point will be within the effective collection area of ​​the liquid accumulation cavity 22.

[0059] This design gives the heat exchanger 1 more flexible installation adaptability. Whether the heat exchanger 1 is in an ideal vertical state or in an inclined state due to installation conditions, the condensate dripping from its surface can be reliably guided into the liquid collection chamber 22, eliminating the safety hazards caused by condensate dripping outside the liquid collection chamber 22 due to installation angle issues, and improving the practicality and reliability of the device.

[0060] Example 5 Reference Figure 9 The difference between this embodiment and embodiment one is that the heat exchanger 1 in this embodiment is a solid metal heat-conducting structure 14.

[0061] The solid metal heat-conducting structural component 14 is a solid rod or plate made of copper or aluminum alloy. It also has a heat-absorbing section 11 and a cooling section 12. It relies on the high thermal conductivity of the solid material itself to conduct the heat absorbed by the heat-absorbing section 11 to the cooling section 12 for release. Although its heat transfer efficiency is lower than that of a heat pipe, it has the advantages of simpler structure, lower manufacturing cost, robustness and durability and absolute reliability. It is suitable for occasions with high cost or reliability requirements.

[0062] Example 6 Reference Figure 10The difference between this embodiment and Embodiment 1 is that multiple heat exchange components 1 are arranged on the liquid accumulation chamber 22 of the same liquid accumulation component 2 to form a parallel dehumidification unit.

[0063] This solution significantly increases the dehumidification capacity by increasing the number of heat exchangers 1; each heat exchanger 1 works independently without interfering with each other, and even if one of them fails, the other heat exchangers 1 can still work normally, thus improving the reliability of the system.

[0064] In practical applications, the number of heat exchange components 1 can be flexibly configured according to the size of the housing 4 and humidity requirements to achieve the best dehumidification effect.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dehumidification device, characterized in that: include: Heat exchange components, including heat absorption section and cooling section; A liquid collection component is located below the heat absorption section and is used to collect the condensate formed by the condensation of the heat absorption section. The liquid collection component is provided with a drain outlet. A check valve assembly is located inside the liquid accumulation component and can move along the height direction of the liquid accumulation component as condensate flows in, thereby controlling the opening and closing of the drain outlet.

2. The dehumidification device according to claim 1, characterized in that: The liquid accumulation component includes a liquid accumulation chamber and a drain pipe connected to the lower end of the liquid accumulation chamber. The drain outlet is located at the end of the drain pipe, and the heat exchange element passes through the liquid accumulation chamber.

3. The dehumidification device according to claim 2, characterized in that: The backflow prevention component includes a float structure disposed inside the drain pipe. The average density of the float structure is less than the density of the condensate, and the diameter of the drain outlet is smaller than the diameter of the float structure.

4. The dehumidification device according to claim 3, characterized in that: The float structure is either a capsule-shaped structure or a hollow sphere structure; the upper part of the capsule-shaped structure is hollow, and the lower part is solid.

5. The dehumidification device according to claim 3, characterized in that: The inner wall of the drain pipe near the drain outlet is designed with an inverted conical surface, and the float structure is sealed in contact with the inverted conical surface.

6. The dehumidification device according to claim 2, characterized in that: The anti-reverse assembly includes a limiting member, a sealing member, and an elastic member. The limiting member is fixed inside the liquid accumulation chamber. The sealing member and the elastic member are located inside the drain pipe. The elastic member is connected between the limiting member and the sealing member. The sealing member slides and seals against the inner wall of the drain pipe.

7. The dehumidification device according to claim 2, characterized in that: The heat exchanger is arranged vertically or inclined relative to the horizontal plane; when the heat exchanger is inclined, the projection of the heat absorption section from the penetration point on the liquid accumulation cavity to its outermost end is located within the projection range formed by the edge of the inner wall of the liquid accumulation cavity.

8. The dehumidification device according to claim 1, characterized in that: In the heat exchanger, the length of the heat absorption section is greater than the length of the cooling section.

9. The dehumidification device according to claim 1, characterized in that: The heat exchanger is a tube with an internal cavity filled with a cooling medium; or, the heat exchanger is a solid metal thermally conductive structure.

10. A box, comprising an internal space formed by box wall panels, characterized in that: The dehumidification device as described in any one of claims 1-9 is installed on the wall panel of the housing; wherein the heat absorption section of the heat exchanger is located in the internal space, and the cooling section is located outside the housing.

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