A computer hardware cabinet with moisture control and temperature control

By installing drive and agitation components inside the chassis, multi-directional disturbance of the intake fan and agitation of the desiccant are achieved, solving the problem of the desiccant not being able to agitate. This enables efficient temperature control of the hardware and effective drying of the desiccant, extending the service life of the computer hardware.

CN122431501APending Publication Date: 2026-07-21WUHU JUNYU EDUCATION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHU JUNYU EDUCATION TECHNOLOGY CO LTD
Filing Date
2026-04-17
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing computer hardware chassis cannot turn over the accumulated desiccant when drying it, resulting in the inability to effectively expel the moisture adsorbed in the compacted desiccant inside, thus reducing the desiccant's circulating moisture absorption effect.

Method used

A moisture-wicking and temperature-controlled chassis for computer hardware was designed. By setting up a drive component and an agitation component, the inlet fan is agitated in multiple directions and the desiccant is turned over. The rotating disk driven by the motor and the magnetic force drive the partition to move down. Combined with the rotating shaft and the spiral guide groove, the desiccant is turned over and dried.

Benefits of technology

It achieves efficient temperature control of hardware and effective drying of desiccant, ensuring the long-lasting moisture-removing effect of desiccant and extending the service life of computer hardware.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a computer hardware moisture-proof temperature control type case and belongs to the technical field of computer cases. The computer hardware moisture-proof temperature control type case comprises a case body, an exhaust fan is arranged at the back of the inner side of the case body, a first mounting seat and a second mounting seat are rotatably arranged on the inner wall of the case body, an air inlet fan is fixedly arranged between the first mounting seat and the second mounting seat, a driving assembly for driving the air inlet fan to rotate is further arranged on the inner side of the case body, a dehumidification box is fixedly arranged on the inner side of the top of the case body, a first partition plate and a second partition plate are respectively arranged on the inner side of the dehumidification box in a lifting mode, and an agitating assembly for stirring the moisture absorbent is further arranged on the inner side of the dehumidification box. The computer hardware moisture-proof temperature control type case can realize efficient temperature control of hardware through air inlet change, can effectively dry and restore the moisture absorbent during heat dissipation, realizes cyclic utilization, achieves long-term moisture-proof effect, and effectively prolongs the service life of the computer hardware.
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Description

Technical Field

[0001] This invention relates to the field of computer chassis technology, specifically to a moisture-wicking and temperature-controlled chassis for computer hardware. Background Technology

[0002] The operational stability and lifespan of computer hardware (including core components such as the central processing unit, graphics processing unit, hard drive, and motherboard) directly depend on the temperature and humidity parameters of its working environment. When the ambient temperature is too high, the power consumption of computer hardware will increase significantly, core performance will decrease, and the aging rate of electronic components will accelerate. When the relative humidity of the environment is high, condensation is easily formed on the hardware surface, and metal contacts will oxidize and corrode, which will lead to faults such as short circuits and poor contact. This problem is more prominent in scenarios such as the humid spring weather in the south, coastal high-humidity areas, or enclosed computer rooms and industrial sites.

[0003] Existing technology (Chinese patent publication number: CN111208886B, published on 2021-01-29) discloses a self-circulating dehumidifying and temperature-controlled computer chassis, which includes a chassis, an air intake section, an air blowing section, a dehumidifying chamber, an air guiding component, a dehumidifying component, and an installation component. It utilizes a circulating fan to achieve airflow circulation between the chassis and the dehumidifying chamber. During airflow circulation, a cooling copper plate is used to cool the airflow flowing through the cooling chamber. The cooled airflow in the cooling chamber is blown into the equipment cavity by the air blowing section. The cold airflow entering the equipment cavity exchanges heat with and cools the computer hardware inside the equipment cavity to ensure the normal operation of the computer hardware. The hot airflow formed after heat exchange continues to escape upwards, and under the action of the air intake section, flows through the first connecting pipe and enters the dehumidifying chamber. The dehumidifying component then cools the airflow flowing through the dehumidifying chamber. The airflow inside the box is dehumidified; the prior art (publication number: CN213934782U, Chinese patent published on 2021-08-10) discloses a computer water cooling heat dissipation mechanism, including a chassis, an installation plate installed inside the chassis, a water tank and a water pump installed on the installation plate, a connecting water pipe connected to the inner cavity of the water tank, the connecting water pipe connected to the input end, a cooling pipe connected to the output end of the water pump, a cylindrical box connected to the cooling pipe, a connecting pipe connected to the top of the water tank in the cylindrical box, a drive shaft rotatably connected inside the cylindrical box, a fan blade plate evenly distributed around the circumference fixedly connected to the drive shaft, the upper end of the drive shaft extending to the outside of the cylindrical box and fixedly connected to a connecting shaft, the connecting shaft rotatably connected to the top plate of the chassis and extending to the outside of the chassis, and a rotating rod fixedly connected to the connecting shaft. This utility model is ingeniously conceived, utilizing the flow characteristics of coolant to drive the movement of the dehumidifying block to absorb and dehumidify moisture inside the chassis, solving the problem of condensation easily causing damage to internal components. Existing technology (Chinese patent announcement number: CN110221663B, publication date 2022-11-18) discloses a recyclable moisture-absorbing and dehumidifying computer chassis, including a chassis body, an exhaust port on the top of the chassis body, a cooling fan installed inside the exhaust port, an air guide shroud fixedly connected to the upper end of the exhaust port, and a... The mounting box contains a mounting plate fixedly connected inside. The mounting plate divides the interior of the mounting box into a driving chamber and a circulating moisture absorption chamber, which are arranged vertically in the middle. A rotatable shaft is vertically inserted through the middle of the mounting plate. An impeller is fixedly sleeved on the side wall of the driving chamber. The shaft can be driven to rotate by the heat dissipation airflow of the chassis body, which in turn drives the moisture absorption mechanism to rotate. This causes multiple storage chambers to rotate in a cycle. By utilizing the characteristic that activated carbon can reabsorb moisture after drying, it can achieve the function of absorbing and drying moisture simultaneously, completing the circulating moisture absorption function. Moreover, it can operate automatically without human control.

[0004] While existing computer hardware chassis can achieve cyclic dehumidification, they cannot agitate the accumulated desiccant during the drying process. This prevents the moisture adsorbed in the compacted desiccant from being effectively discharged, thus reducing the subsequent cyclic dehumidification effect of the desiccant and presenting certain usage defects. Summary of the Invention

[0005] The purpose of this invention is to provide a moisture-wicking and temperature-controlled chassis for computer hardware, in order to solve the problem mentioned in the background art that current computer hardware chassis on the market cannot turn over the accumulated desiccant when drying it, resulting in the inability to effectively discharge the moisture adsorbed in the compacted desiccant inside.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a moisture-wicking and temperature-controlled chassis for computer hardware, comprising a chassis body, an exhaust fan installed at the rear inner side of the chassis body, a first mounting base and a second mounting base rotatably mounted on the inner wall of the chassis body, an intake fan fixedly mounted between the first mounting base and the second mounting base, a drive assembly for driving the intake fan to rotate installed on the inner side of the chassis body, a dehumidification box fixedly mounted on the inner top of the chassis body, a first partition and a second partition respectively lifted and lowered on the inner side of the dehumidification box, and an agitation assembly for turning the desiccant on the inner side of the dehumidification box.

[0007] Preferably, the drive assembly includes a motor fixedly installed inside the housing, and a rotating disk is fixedly installed at the output end of the motor. A guide block is fixedly installed at the edge of the upper surface of the rotating disk. A connecting plate is fixedly installed on the outer side of the shaft of the second mounting base, and a sliding groove is provided on the connecting plate. The guide block slides along the sliding groove during the rotation of the rotating disk.

[0008] Preferably, the guide block drives the second mounting base to rotate back and forth during the reciprocating sliding along the slide groove, and the inlet fan is fixedly installed on the first mounting base and the second mounting base by bolts, and the second mounting base drives the inlet fan to swing and blow air.

[0009] Preferably, the dehumidifier box has a uniformly distributed pore structure, and both the first partition and the second partition have pore structures. The second partition contains granular desiccant, and the particles of the desiccant are larger than the pore size of the pore structure.

[0010] Preferably, the first partition, the second partition, and the dehumidification box are coaxially arranged, and a spring is fixedly connected between the first partition and the lower inner wall of the dehumidification box. A spring is also connected between the first partition and the second partition, and both the first partition and the second partition form an elastic lifting structure with the dehumidification box.

[0011] Preferably, guide posts are symmetrically fixedly installed on the lower surface of the second partition, and the guide posts slide through the first partition and the lower end of the dehumidifier box, and the second partition moves elastically downward after the desiccant absorbs moisture and increases in weight.

[0012] Preferably, a first magnetic block is fixedly installed at the lower end of the guide post, and a second magnetic block is fixedly installed on the upper surface of the first mounting base. During the rotation of the first mounting base, the second magnetic block is driven to pass under the first magnetic block. The magnetic poles of the opposite sides of the first and second magnetic blocks are opposite, and the first and second partitions will elastically move downward under the action of magnetic force.

[0013] Preferably, the agitation assembly includes a rotating shaft rotatably mounted in the middle of the dehumidification box, and the rotating shaft slides through the center of both the first partition and the second partition. A spiral guide groove is provided on the outer side of the rotating shaft, and a ball bearing is embedded in the inner wall of the through hole in the center of the first partition. During the lifting and lowering adjustment of the first partition, the ball bearing slides along the guide groove to drive the rotating shaft to rotate.

[0014] Preferably, a sealing plate is fixedly installed on the top of the rotating shaft, and a dehumidification hole is opened on the top of the box. The sealing plate is attached to the top of the box to seal the dehumidification hole. When the rotating shaft rotates, it drives the sealing plate and the dehumidification hole to be misaligned to achieve dehumidification.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the computer hardware desiccant temperature control chassis achieves efficient temperature control of the hardware through reverse air intake, and can effectively dry and reduce the desiccant during the heat dissipation process, realize recycling, achieve long-term desiccant effect, and effectively extend the service life of the computer hardware. The specific contents are as follows. 1. The system is equipped with a first mounting base, a second mounting base, and a motor. The first and second mounting bases can support and install the intake fan. When the motor is working, it drives the second mounting base to rotate back and forth through the combined transmission action of the rotating disk, guide block, and connecting plate, thereby adjusting the exhaust direction of the intake fan. This allows for multi-directional airflow disturbance, ensuring sufficient cooling of the computer hardware inside the chassis.

[0016] 2. A dehumidification box is provided. The desiccant inside the dehumidification box can absorb the moisture in the air inside the computer case, thereby preventing excessive humidity inside the computer case from affecting the normal operation of the computer hardware.

[0017] Furthermore, a first partition and a second partition are also provided. As the desiccant absorbs moisture and increases in weight, the second partition will move downward under the action of gravity, thereby compressing the spring between it and the first partition. At the same time, it will drive the guide post to move downward, so that the guide post gradually approaches the height of the second magnetic block. When the second magnetic block moves to below the guide post, the guide post will drive the first partition and the second partition to move downward synchronously under the magnetic force of the first magnetic block and the second magnetic block. When the first magnetic block and the second magnetic block are misaligned due to the rotation of the first mounting base, the first partition and the second partition will elastically move upward and reset, realizing the turning and tumbling of the desiccant. At the same time, during the turning and tumbling process, the second partition will further accelerate upward, further improving the turning of the bottom layer of desiccant.

[0018] 3. It is equipped with a first partition and a rotating shaft. As the first partition is raised and lowered, the ball bearings in the central through hole of the first partition can slide along the spiral guide groove on the outside of the rotating shaft, thereby driving the rotating shaft to rotate. This allows the rotating shaft to synchronously agitate the tumbled desiccant, further improving the drying and reduction effect of the desiccant and ensuring its long-lasting moisture-repelling effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the inlet fan and dehumidifier box of the present invention; Figure 3 This is a schematic diagram of the mounting structure of the first mounting base, the second mounting base, and the intake fan of the present invention; Figure 4 This is a schematic diagram of the connection structure between the rotating disk and the connecting plate of the present invention; Figure 5 This is a bottom view of the first mounting base and dehumidifier box of the present invention; Figure 6 This is a schematic diagram of the sealing plate installation structure of the present invention; Figure 7 This is a cross-sectional view of the dehumidification box of the present invention; Figure 8 This is a schematic diagram of the rotating shaft mounting structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Cabinet; 2. Exhaust fan; 3. First mounting base; 4. Second mounting base; 5. Inlet fan; 6. Motor; 7. Rotary disc; 8. Guide block; 9. Connecting plate; 10. Slide groove; 11. Dehumidifier box; 12. First partition; 13. Second partition; 14. Guide post; 15. First magnetic block; 16. Second magnetic block; 17. Rotating shaft; 18. Guide groove; 19. Ball bearing; 20. Sealing plate; 21. Exhaust hole. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Existing computer hardware cooling systems using moisture-wicking and temperature-controlled chassis have a unidirectional airflow, making it impossible to achieve uniform and sufficient heat dissipation. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-4 As shown; a moisture-wicking and temperature-controlled computer hardware chassis includes a chassis 1, an exhaust fan 2 installed on the rear inner side of the chassis 1, a first mounting base 3 and a second mounting base 4 rotatably mounted on the inner wall of the chassis 1, an intake fan 5 fixedly mounted between the first mounting base 3 and the second mounting base 4, and a drive assembly for driving the intake fan 5 to rotate is also installed on the inner side of the chassis 1.

[0023] The drive assembly includes a motor 6 fixedly installed inside the housing 1, and a rotating disk 7 fixedly installed at the output end of the motor 6. A guide block 8 is fixedly installed at the edge of the upper surface of the rotating disk 7. A connecting plate 9 is fixedly installed on the outer side of the shaft of the second mounting base 4. A sliding groove 10 is provided on the connecting plate 9. During the rotation of the rotating disk 7, the guide block 8 slides along the sliding groove 10. During the reciprocating sliding of the guide block 8 along the sliding groove 10, the second mounting base 4 is driven to reciprocate and rotate. The inlet fan 5 is fixedly installed on the first mounting base 3 and the second mounting base 4 by bolts. The second mounting base 4 drives the inlet fan 5 to swing and blow air.

[0024] The intake fan 5 can be supported and installed by the first mounting base 3 and the second mounting base 4. When the motor 6 is working, it drives the rotating disk 7 to rotate synchronously, so that the guide block 8 set on the upper surface of the rotating disk 7 slides back and forth along the sliding groove 10 opened on the connecting plate 9, thereby driving the second mounting base 4 to rotate back and forth, thereby adjusting the exhaust direction of the intake fan 5, which can make the airflow turbulent in multiple directions and ensure sufficient cooling of the computer hardware inside the chassis.

[0025] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing computer hardware chassis cannot agitate the accumulated desiccant, resulting in the inability to effectively expel the moisture adsorbed in the compacted desiccant, thus reducing the subsequent moisture absorption effect of the desiccant. To further solve this technical problem, this example discloses the following technical content: Figures 5-9As shown; a dehumidifier box 11 is fixedly installed on the inner side of the top of the box 1. A first partition 12 and a second partition 13 are respectively installed on the inner side of the dehumidifier box 11. An agitation component for turning the desiccant is also provided on the inner side of the dehumidifier box 11.

[0026] The dehumidifier box 11 has evenly distributed pore structures, and both the first partition 12 and the second partition 13 have pore structures. The second partition 13 contains granular desiccant, and the desiccant particles are larger than the pore size. The first partition 12, the second partition 13, and the dehumidifier box 11 are coaxially arranged. A spring is fixedly connected between the first partition 12 and the lower inner wall of the dehumidifier box 11, and a spring is also connected between the first partition 12 and the second partition 13. Both the first partition 12 and the second partition 13 form an elastic lifting structure with the dehumidification box 11. Guide posts 14 are symmetrically fixedly installed on the lower surface of the second partition 13, and the guide posts 14 slide through the lower ends of the first partition 12 and the dehumidification box 11. After the desiccant absorbs moisture and increases in weight, it causes the second partition 13 to elastically move downwards. A first magnet 15 is fixedly installed at the lower end of the guide post 14, and a second magnet 16 is fixedly installed on the upper surface of the first mounting base 3. During the rotation of the first mounting base 3, the second magnet 16 is moved. Below the first magnetic block 15, and with the magnetic poles of the opposing surfaces of the first magnetic block 15 and the second magnetic block 16 opposite, the first partition 12 and the second partition 13 will elastically move downward under the action of magnetic force. The stirring component includes a rotating shaft 17 rotatably installed in the middle of the dehumidification box 11, and the rotating shaft 17 slides through the center of the first partition 12 and the second partition 13. A spiral guide groove 18 is provided on the outer side of the rotating shaft 17. Meanwhile, a ball bearing 19 is embedded in the inner wall of the through hole in the center of the first partition 12. During the adjustment of the lifting of the first partition 12, the ball bearing 19 slides along the guide groove 18 to drive the rotating shaft 17 to rotate. A sealing plate 20 is fixedly installed on the top of the rotating shaft 17, and a dehumidification hole 21 is provided on the top of the box 1. The sealing plate 20 fits against the top of the box 1 to seal the dehumidification hole 21. When the rotating shaft 17 rotates, it causes the sealing plate 20 and the dehumidification hole 21 to be misaligned to achieve dehumidification.

[0027] The desiccant inside the dehumidifier box 11 absorbs moisture from the air inside the computer case, preventing excessive humidity and ensuring the normal operation of the computer hardware. As the desiccant absorbs moisture and increases in weight, the second partition 13 moves downward under gravity, compressing the spring between it and the first partition 12. This, in turn, causes the guide post 14 to move downward. As the guide post 14 and dehumidifier box 11 are adjusted in height, the first magnetic block 15 at the lower end of the guide post 14 gradually approaches the height of the second magnetic block 16. When the second magnetic block 16 moves below the guide post 14, the guide post 14, under the combined magnetic force of the first and second magnetic blocks 15 and 16, causes the first and second partitions 12 and 13 to move downward simultaneously. When the first and second magnetic blocks 15 and 16 are misaligned due to the rotation of the first mounting base 3, the first and second partitions 12 and 13 elastically move upward to reset, effectively turning over the desiccant. During this turning process, the second partition... Plate 13 will further accelerate upward movement, further enhancing the agitation of the bottom desiccant. With the adjustment of the lifting and lowering of the first partition 12, the ball bearing 19 set in the central through hole of the first partition 12 can slide along the spiral guide groove 18 opened on the outside of the rotating shaft 17, thereby driving the rotating shaft 17 to rotate. This allows the rotating shaft 17 to synchronously agitate the agitated desiccant and simultaneously drive the sealing plate 20 to rotate synchronously, causing the sealing plate 20 and the vent hole 21 to be misaligned, thus achieving automatic opening of the vent hole 21 and achieving dehumidification. This further improves the drying and reduction effect of the desiccant, ensuring the long-lasting moisture-removing effect of the desiccant. When the desiccant dries and reduces, its mass is restored, causing the second partition 13 to drive the guide post 14 to move upward and reset under the action of the spring force. This keeps the first magnetic block 15 and the second magnetic block 16 at a greater height difference, avoiding continuous agitation of the desiccant, which could damage the desiccant and generate working noise.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A moisture-wicking and temperature-controlled chassis for computer hardware, comprising a chassis (1), wherein an exhaust fan (2) is installed on the rear inner side of the chassis (1), characterized in that, The inner wall of the box (1) is rotatably mounted with a first mounting base (3) and a second mounting base (4). An intake fan (5) is fixedly mounted between the first mounting base (3) and the second mounting base (4). The inner side of the box (1) is also equipped with a drive assembly for driving the intake fan (5) to rotate. A dehumidifier box (11) is fixedly mounted on the inner side of the top of the box (1). A first partition (12) and a second partition (13) are respectively lifted and lowered on the inner side of the dehumidifier box (11). An agitation assembly for turning the desiccant is also provided on the inner side of the dehumidifier box (11).

2. The moisture-wicking and temperature-controlled chassis for computer hardware according to claim 1, characterized in that: The drive assembly includes a motor (6) fixedly installed inside the housing (1), and a rotating disk (7) is fixedly installed at the output end of the motor (6). A guide block (8) is fixedly installed at the edge of the upper surface of the rotating disk (7). A connecting plate (9) is fixedly installed on the outer side of the shaft of the second mounting base (4), and a sliding groove (10) is provided on the connecting plate (9). During the rotation of the rotating disk (7), the guide block (8) slides along the sliding groove (10).

3. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 2, characterized in that: The guide block (8) drives the second mounting base (4) to rotate back and forth during the reciprocating sliding along the slide groove (10), and the inlet fan (5) is fixedly installed on the first mounting base (3) and the second mounting base (4) by bolts, and the second mounting base (4) drives the inlet fan (5) to swing and blow air.

4. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 1, characterized in that: The dehumidifier box (11) is uniformly provided with a pore structure, and the first partition (12) and the second partition (13) are both provided with pore structures. The second partition (13) contains granular desiccant, and the particles of the desiccant are larger than the pore size of the pore structure.

5. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 1, characterized in that: The first partition (12), the second partition (13) and the dehumidification box (11) are coaxially arranged, and a spring is fixedly connected between the lower inner wall of the first partition (12) and the dehumidification box (11), and a spring is also connected between the first partition (12) and the second partition (13). Both the first partition (12) and the second partition (13) form an elastic lifting structure with the dehumidification box (11).

6. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 1, characterized in that: The second partition (13) has guide posts (14) symmetrically fixedly installed on its lower surface. The guide posts (14) slide through the lower end of the first partition (12) and the dehumidifier box (11). After the desiccant absorbs moisture and increases in weight, it causes the second partition (13) to move down elastically.

7. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 6, characterized in that: The lower end of the guide post (14) is fixedly installed with a first magnetic block (15), and the upper surface of the first mounting base (3) is fixedly installed with a second magnetic block (16). During the rotation of the first mounting base (3), the second magnetic block (16) is driven to pass under the first magnetic block (15). The magnetic poles of the opposite sides of the first magnetic block (15) and the second magnetic block (16) are opposite. The first partition (12) and the second partition (13) will elastically move downward under the action of magnetic force.

8. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 1, characterized in that: The agitation assembly includes a rotating shaft (17) rotatably mounted in the middle of the dehumidification box (11), and the rotating shaft (17) slides through the center of the first partition (12) and the second partition (13). A spiral guide groove (18) is provided on the outer side of the rotating shaft (17). Meanwhile, a ball bearing (19) is embedded in the inner wall of the through hole in the center of the first partition (12). During the adjustment of the first partition (12) by raising and lowering, the ball bearing (19) slides along the guide groove (18) to drive the rotating shaft (17) to rotate.

9. A moisture-wicking and temperature-controlled chassis for computer hardware according to claim 8, characterized in that: A sealing plate (20) is fixedly installed on the top of the rotating shaft (17), and a dehumidification hole (21) is opened on the top of the box (1). The sealing plate (20) is attached to the top of the box (1) to seal the dehumidification hole (21). When the rotating shaft (17) rotates, it drives the sealing plate (20) and the dehumidification hole (21) to be misaligned to achieve dehumidification.