A high-performance computer two-phase cooling isolation heat exchange cabinet

Abstract

The present invention relates to the field of non-contact heat exchange technology for computer cabinets, and specifically to a high-performance computer two-phase cooling isolation heat exchange cabinet, comprising a cabinet unit, a corrugated bare wall, a medium switching system, and a reciprocating drive mechanism. The corrugated bare wall is composed of a corrugated plate and a straight-through heat pipe. The straight-through heat pipe passes through the side wall of the groove and is filled with a solid-liquid two-phase medium. The medium switching system includes a lower active cavity fixed to the bottom of the corrugated plate and an upper follower cavity at the top. The two ends of the straight-through heat pipe are connected to each other, and a column block and a free support rod are set in the pipe mouth. The reciprocating drive mechanism drives the column block to move up and down in the straight-through heat pipe, driving the solid-liquid two-phase medium to flow back and forth between the inner groove and the outer groove to achieve heat exchange. The device combines the latent heat cycle of phase change material with the straight air duct design, and uses a low-power drive system to achieve fully enclosed, efficient, and low-cost heat exchange. It has high reliability, environmental protection, and scalability.

Description

Technical Field

[0001] The invention belongs to the technical field of non-contact heat exchange of computer cabinets, and in particular relates to a high-performance computer two-phase cooling isolation heat exchange cabinet. Background Art

[0002] High-performance computer cabinets are specialized cabinets used to house and run high-performance computer equipment, typically equipped with servers, storage devices, network equipment, and more. Existing computer cabinets primarily use two cooling methods: air cooling and liquid cooling. Air cooling dissipates heat into the surrounding air through fans and heat sinks, while liquid cooling uses coolant to circulate through pipes to remove heat. Air cooling has limited cooling efficiency and is difficult to meet the high heat dissipation requirements of high-performance computers. Because cabinets typically employ an open design, heat leaks easily, affecting the cooling effect. While liquid cooling is more efficient, it requires complex piping and pumps, and carries the risk of leakage. Liquid cooling requires an independent refrigeration system (such as a compressor, condenser, etc.), which increases the initial investment cost of the equipment. The refrigeration system and circulating fans consume a large amount of electricity, resulting in high long-term operating costs.

[0003] Phase change materials absorb or release latent heat through solid-liquid phase transitions and have been widely used in the field of heat dissipation. For example: Server chip heat dissipation: Taijinuo's Fill-PCM800 fills the gap between the chip and the heat sink through phase change, significantly reducing thermal resistance (thermal conductivity reaches 8W / mK, thermal resistance is as low as 0.007℃·in² / W). Data center applications: Honeywell's PTM series phase change materials are used for high-power chip heat dissipation, supporting dynamic temperature adjustment and interface gap filling. Laptop heat dissipation: Phase change materials can delay temperature rise, reduce fan dependence, and reduce noise. Honeywell PCM mentioned in "How to use phase change materials to lead a new revolution in new energy and AI heat dissipation" that Honeywell's PTM7900 phase change material has a thermal conductivity of up to 8W / mK and a thermal resistance as low as 0.045ºC·cm² / W, which can quickly conduct heat from the chip and effectively alleviate local hot spots. Other existing technologies: Vapor chamber (VC) heat sinks are a passive thermal management system based on phase change and heat conduction principles, commonly used in high-heat flow applications such as high-performance computing and consumer electronics. VC heat sinks provide more uniform temperature distribution through efficient phase change heat transfer. However, these existing technologies primarily focus on static phase change (e.g., filling within the heat sink) and do not mention similar dynamic circulation designs. Furthermore, traditional curved conduit designs are not suitable for solid-liquid two-phase media, as solid media can easily become stuck, affecting normal equipment operation.

[0004] The development of high-performance computers (HPCs) places increasing demands on cooling systems. Data centers often reach kilowatt levels, and this performance improvement urgently requires more reliable heat dissipation solutions and materials. Existing cooling methods suffer from numerous deficiencies in cooling efficiency, equipment costs, operating energy consumption, structural design, and environmental adaptability. To meet the efficient cooling needs of HPCs while reducing equipment and operating costs and improving system stability and adaptability, an innovative cooling solution is urgently needed. Summary of the Invention

[0005] In response to the defects and problems of the existing technology, the present invention proposes a design of a fully enclosed high-performance computer two-phase cooling isolation heat exchange cabinet, which uses solid-liquid phase change medium to achieve efficient heat exchange, does not require independent refrigeration equipment, significantly reduces equipment and operating costs, and optimizes heat transfer through internal and external circulation systems to achieve room temperature cooling effect.

[0006] The solution of the present invention to solve its technical problem is: adopt a high-performance computer two-phase cooling isolation heat exchange cabinet, including a cabinet unit and a corrugated bare wall, and also including a medium switching system and a reciprocating drive mechanism. The corrugated bare wall includes a corrugated plate and a straight-through heat pipe, the inner side of the corrugated plate has an inner groove, and the outer side has an outer groove. A plurality of parallel straight-through heat pipes are fixed vertically through the side wall center of each side groove. The straight-through heat pipe is linear, and each vertical straight-through heat pipe simultaneously penetrates a plurality of horizontal inner grooves and a plurality of horizontal outer grooves. A solid-liquid two-phase medium is filled in the straight-through heat pipe, and a medium switching system for driving the solid-liquid two-phase medium in the straight-through heat pipe to flow back and forth is fixed at the bottom and top of the corrugated plate. The medium switching system includes a lower active cavity and an upper follower cavity. The lower active cavity is fixed to the bottom of the corrugated plate, and the upper follower cavity is fixed to the top of the corrugated plate. The bottom and top of the straight-through heat-conducting pipe are respectively connected to the lower active cavity and the upper follower cavity. Column blocks are respectively installed in the upper and lower end pipe openings of the straight-through heat-conducting pipe. The outer end of each column block is connected to a free support rod, and a limit baffle is installed on the free support rod. The limit baffles are respectively located in the lower active cavity and the upper follower cavity; a breathing mouth is provided on the top or side of the upper follower cavity; the reciprocating drive mechanism is used to alternately provide positive and negative pressure to the lower active cavity to increase or decrease the gas or liquid in the lower active cavity, thereby driving each column block to move upward or downward in the corresponding straight-through heat-conducting pipe, and then driving the solid-liquid two-phase medium in the straight-through heat-conducting pipe to move back and forth between adjacent inner grooves and outer grooves.

[0007] Preferably, the side wall of the cabinet unit includes at least a corrugated bare wall, or an outer side plate is fixed on the outer side of the corrugated bare wall, or an inner side plate is fixed on the inner side of the corrugated bare wall.

[0008] Preferably, the reciprocating drive mechanism includes a base and a micro motor, the base is fixed to the bottom of the lower active chamber, a piston cylinder is fixedly installed on the base, a piston is installed in the piston cylinder, a breathing tube is connected to the distal end of the piston cylinder, the breathing tube is connected to the inner cavity of the lower active chamber, the lower active chamber contains fluid, and the micro motor drives the piston to reciprocate through a linear drive mechanism.

[0009] Preferably, the linear drive mechanism includes sealing covers fixedly mounted on the base, shaft seats are provided at both ends of the inner side of the sealing cover and a pair of parallel turntables are installed, a rotating shaft is provided at the center of the outer side of the two turntables, each rotating shaft is installed in the corresponding shaft seat, and an eccentric shaft is connected between the two turntables; a T-shaped rod is fixed at the proximal center of the piston, the T-shaped rod includes a horizontal rod and a vertical rod, a strip hole is provided on the vertical rod, the strip hole is sleeved on the outer side of the eccentric shaft, the micro motor is fixedly mounted at the proximal end of the base, and the rotating shaft of the micro motor is transmission-connected to the rotating shaft of the turntable.

[0010] Preferably, it also includes an external circulation system, which includes an outer plate, a front sealing plate, an outer return chamber, a rear wall chamber and an external exhaust fan. The outer plate is fixed to the outer wall of the corrugated plate, and multiple outer trough guide channels are formed between the outer plate and the outer trough. A front sealing plate is fixed to the front end of the corrugated plate and multiple external air inlet holes are opened on the front sealing plate. Each external air inlet hole corresponds to the head end of the corresponding external trough guide channel. An external return chamber is fixed to the rear end of the corrugated plate. The rear end of each external trough guide channel is connected to the inner cavity of the external return chamber. A rear wall chamber is fixed to the outer side of the rear wall of the cabinet body of the cabinet unit. The external return chamber is connected to the inner cavity of the rear wall chamber. A hole is opened at the rear end of the rear wall chamber and the external exhaust fan is installed.

[0011] Preferably, it also includes an internal circulation system, which includes an inner plate, an inner reflow cavity, a top wall cavity and an inner exhaust fan. The inner plate is fixed to the inner wall of the corrugated plate, and a plurality of inner groove guide channels are formed between the inner plate and the inner groove. A series of inner air inlet holes are respectively provided on the surface of the inner plate. The inner groove guide channels are connected to the inner cavity of the cabinet body through the inner air inlet holes. An inner reflow cavity is fixed at the rear position of the inner plate. The rear end of each inner groove guide channel is connected to the inner cavity of the inner reflow cavity. A total air outlet pipe is installed at the top of the inner reflow cavity, and a top wall cavity is provided at the top of the inner cavity of the cabinet body. An inner exhaust fan is installed in the center of the top wall cavity. The total air outlet pipe is connected to the inner cavity of the top wall cavity.

[0012] Preferably, the free strut is a screw-type free strut, and a double nut is installed on the thread at the end of the screw-type free strut. The limit baffle is located between the double nuts and fixed. The double nuts are adjusted to change the position of the limit baffle.

[0013] Preferably, ribs are provided in the center of the inner groove and / or the outer groove of the corrugated plate in the transverse direction.

[0014] The present invention has the following advantages: 1. No independent refrigeration equipment is required, and the system is highly compatible with room temperature. By absorbing and releasing heat through the latent heat of phase change of a solid-liquid medium (such as paraffin wax or Glauber's salt), cooling is achieved directly using the ambient temperature (25–35°C). This eliminates the need for traditional refrigeration equipment such as compressors and refrigerants, thereby reducing equipment complexity and initial investment costs. The system is particularly suitable for computer rooms or laboratories with existing air conditioning and temperature control.

[0015] 2. Fully enclosed heat exchange isolates external pollution. The internal and external circulation of the cabinet are completely isolated, and the internal circulation system operates in a closed loop with dry airflow to prevent dust and moisture from invading the cabinet.

[0016] 3. High energy efficiency and low operating energy consumption. Phase change materials (PCMs) have high latent heat values (e.g., paraffin-based PCMs reach 200–300 J / g). Their heat absorption and release per unit volume far exceed those of traditional air cooling. Requiring only micro-motors to drive medium switching and low-power fans to maintain airflow, energy consumption is significantly lower than traditional liquid cooling or compressor refrigeration systems. This reduces long-term operating costs, is energy-efficient and environmentally friendly, and meets the requirements of green data centers.

[0017] 4. Anti-stuck design ensures high system reliability. The straight heat pipe adopts a straight structure to avoid the risk of solid medium clogging in curved pipes. The column block and limit baffle work together to ensure the stable reciprocating flow of the phase change medium in the straight heat pipe, improving the long-term stability and life of the system and reducing maintenance requirements.

[0018] 5. Maximize dynamic heat exchange efficiency. Through a medium switching system and reciprocating drive mechanism, the liquid medium that has absorbed heat is periodically transferred to the external circulation for cooling, while the solid medium is simultaneously transferred to the internal circulation for heat absorption. The external circulation uses room temperature air to directly cool the phase change material, while the internal circulation uses dry airflow to efficiently cool the cabinet environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the cabinet unit of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the cabinet structure after removing the outer panel;

[0021] Figure 3 yes Figure 2 Side view of;

[0022] Figure 4 yes Figure 3 Schematic diagram of the AA section structure;

[0023] Figure 5 It is a schematic diagram of a composite structure with corrugated bare walls;

[0024] Figure 6 yes Figure 5A schematic diagram of the three-dimensional structure on the other side;

[0025] Figure 7 It is a schematic diagram of the structure of two types of corrugated plates;

[0026] Figure 8 yes Figure 7 The enlarged structural diagram of the middle D part;

[0027] Figure 9 yes Figure 7 The enlarged structural diagram of the middle E part;

[0028] Figure 10 It is a schematic diagram of the local structure of the corrugated bare wall;

[0029] Figure 11 It is a structural diagram of a reciprocating drive mechanism.

[0030] Numbers in the figure: 1-cabinet unit; 2-corrugated bare wall; 3-external circulation system; 4-internal circulation system; 5-medium switching system; 6-reciprocating drive mechanism; 11-cabinet body; 12-front door; 13-side wall; 14-rear wall; 15-insulation layer; 16-mesh cover; 21-corrugated plate; 22-inner groove; 23-outer groove; 24-through heat pipe; 25-rib plate; 31-outer plate; 32-front sealing plate; 33-external air inlet; 34-external return chamber; 35-external wall air inlet; 36-external groove guide channel; 361-enclosed channel; 37-rear wall cavity ;38-external exhaust fan;39-external cavity exhaust hole;41-inner side panel;42-inner air inlet;43-inner reflux cavity;44-inner cavity exhaust hole;45-main exhaust pipe;46-inner groove guide channel;47-top wall cavity;48-inner exhaust fan;51-lower active cavity;52-upper follower cavity;53-column block;54-free support rod;55-limit baffle;56-breathing nozzle;61-base;62-piston cylinder;63-piston;64-breathing tube;65-sealing cover;66-micro motor;67-turntable;68-eccentric shaft;69-T-shaped rod. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] Example 1: Traditional cabinets typically use air cooling or liquid cooling, but air cooling efficiency is limited, and liquid cooling requires complex pipes and pumps, with a high risk of leakage. The solution of the present invention achieves efficient heat exchange through solid-liquid phase change media, significantly improving cooling efficiency. Specifically, this embodiment provides a high-performance computer two-phase cooling isolated heat exchange cabinet, including a cabinet unit 1, a corrugated bare wall 2, an external circulation system 3, an internal circulation system 4, a medium switching system 5, and a reciprocating drive mechanism 6. It achieves efficient heat exchange through solid-liquid phase change media, adopts a fully enclosed design and low-energy consumption components, significantly improves cooling efficiency and system reliability, reduces equipment and operating costs, adapts to different indoor and outdoor temperature differences, and ensures stable operation of high-performance computers. In the fully enclosed state of the cabinet, and without the need for independent refrigeration equipment, efficient heat exchange inside and outside the cabinet is achieved through solid-liquid phase change, achieving liquid cooling effects with the energy consumption of air cooling. Solid media in traditional curved conduits are prone to getting stuck, affecting heat exchange efficiency. This solution uses straight-through heat pipes to avoid the problem of media getting stuck and ensure smooth flow of the media.

[0033] Specifically, such as Figure 1 and Figure 2 As shown, the cabinet unit 1 includes a cabinet body 11, a front door 12, side walls 13, a rear wall 14, an insulation layer 15, a mesh cover 16, and other switches or indicator lights. The side walls 13 are fixedly mounted on the left and right sides of the rectangular frame of the cabinet body 11. The front door 12 (optionally not included) is hingedly mounted on the front side, and the rear wall 14 is fixed to the rear side. Figure 5 The rear wall 14 shown in the figure is composed of two layers of wood with a sandwich layer filled with an insulation layer 15. Each side wall 13 has an external air inlet 33 on its front side, with a mesh cover 16 positioned outside the external air inlet 33. The interior of the cabinet body 11 can be independent or divided into multiple layers. In the case of a multiple-layer design, each horizontal partition is provided with a vertically extending air vent.

[0034] like Figure 6 and Figure 10 As shown, the side wall 13 includes a corrugated bare wall 2, an outer plate 31 and an inner plate 41, wherein the corrugated bare wall 2 includes a corrugated plate 21, an inner groove 22, an outer groove 23, a straight heat pipe 24 and a rib 25. The corrugated plate 21 is a corrugated plate, and its corrugated cross section can be rectangular, trapezoidal, parallelogram, triangular or circular, and the bottom of the corrugated groove is horizontal. Figure 10As shown, the corrugated plate 21 has inner grooves 22 on its inner side and outer grooves 23 on its outer side. Multiple parallel straight heat pipes 24 are vertically fixed through the sidewalls of each side groove. The straight heat pipes 24 are straight, avoiding any bends, thus preventing the solid medium from getting stuck. Thus, multiple vertical straight heat pipes 24 simultaneously penetrate multiple horizontal inner grooves 22 and multiple horizontal outer grooves 23. The straight heat pipes 24 are copper or aluminum tubes, and the corrugated plate 21 is aluminum plate. Figure 7 ① provides a corrugated plate 21 without ribs, and ② provides a corrugated plate 21 with ribs 25. The ribs 25 can not only improve the support strength of the straight heat pipe 24 in the side groove and the strength of the entire side wall, but also increase the heat conduction effect. When producing the corrugated plate 21 containing the straight heat pipe 24, it is preferred to use a casting method. The lower mold and upper mold used for casting match the bottom and top shapes of the corrugated plate 21 respectively, and there is a gap between the upper and lower molds that is consistent with the thickness of the corrugated plate 21. The upper and lower molds are respectively provided with grooves corresponding to the semicircle of the straight heat pipe 24, and multiple straight heat pipes 24 are respectively arranged and fitted into the corresponding grooves of the lower mold. Then, the upper mold is buckled to ensure that the upper and lower molds are sealed around the periphery. Only a few pouring ports are retained. Aluminum liquid is poured from the pouring ports. After the mold is cooled and opened, the corrugated plate 21 blank containing the straight heat pipe 24 can be formed. After trimming and finishing, the corrugated bare wall 2 is formed.

[0035] The straight heat pipe 24 is filled with a solid-liquid two-phase medium (i.e., phase change medium), such as paraffin or Glauber's salt. Paraffin-based PCM has a latent heat value of 200-300 J / g, making it suitable for absorbing transient high heat. Hydrated salts, such as sodium sulfate decahydrate (Glauber's salt), have a melting point of approximately 32°C and can be used for thermal energy storage, with a solid-liquid dual phase during phase change. A medium switching system 5 is fixed to the bottom and top of the corrugated plate 21 to drive the reciprocating flow of the solid-liquid two-phase medium within the straight heat pipe 24.

[0036] like Figure 7-9As shown, the medium switching system 5 includes a lower active cavity 51, an upper follower cavity 52, a column block 53, a free support rod 54 and a limit baffle 55. The lower active cavity 51 is fixed to the bottom of the corrugated plate 21, and the upper follower cavity 52 is fixed to the top of the corrugated plate 21. The bottom and top of each straight heat pipe 24 are respectively connected to the lower active cavity 51 and the upper follower cavity 52. Column blocks 53 are respectively installed on the inner side of the upper and lower ends of the straight heat pipe 24. The outer end of each column block 53 is fixed to the bottom of the corrugated plate 21. A free support rod 54 is connected, each of which is equipped with a limit block 55 (for example, a double nut is installed on the screw-type support rod, and the limit block is located between the double nuts and fixed, and the height of the limit block can be adjusted). The limit blocks 55 at both ends of the straight-through heat pipe 24 are respectively located in the lower active cavity 51 and the upper follower cavity 52. The function of the limit block 55 is to prevent the column block 53 from slipping out of the straight-through heat pipe 24, ensuring that the phase change medium in the straight-through heat pipe 24 does not leak out. A breathing nozzle 56 is provided on the top or side of the upper follower cavity 52. The straight-through heat pipe 24 adopts a straight design without any bends or complex structures. This design ensures that even if the medium becomes solid, it will not get stuck or blocked due to the shape of the pipe. The straight heat pipe allows the solid medium to move smoothly along the inner wall of the pipe.

[0037] The reciprocating drive mechanism 6 is used to alternately provide positive and negative pressures to the lower active cavity 51 to increase and decrease the gas or liquid in the lower active cavity 51, thereby driving each column block 53 to move upward or downward in the corresponding straight heat pipe 24, and then driving the solid-liquid two-phase medium in the straight heat pipe 24 to reciprocate between the adjacent inner groove 22 and outer groove 23.

[0038] like Figure 3 and Figure 11As shown, a reciprocating drive mechanism 6 is provided, which includes a base 61, a piston cylinder 62, a piston 63, a breathing tube 64, a sealing cover 65, a micro motor 66, a rotating disk 67, an eccentric shaft 68, and a T-shaped rod 69. The base 61 is fixed to the bottom of the lower active chamber 51. The piston cylinder 62 and the sealing cover 65 are fixedly mounted on the base 61. The piston 63 is mounted inside the piston cylinder 62. The breathing tube 64 is connected to the distal end of the piston cylinder 62. The breathing tube 64 is connected to the inner cavity of the lower active chamber 51. The lower active chamber 51 contains air or any liquid fluid that is stable at room temperature. A shaft seat is provided in the sealing cover 65, and a pair of parallel rotating disks 67 are mounted through the shaft seat. A rotating shaft is provided at the center of the outer end of the two rotating disks 67. Each rotating shaft is mounted in a corresponding shaft seat. An eccentric shaft 68 is connected between the two rotating disks 67. A T-shaped rod 69 is fixed to the center of the proximal end of the piston 63. This rod 69 comprises a horizontal rod and a vertical rod, each with a strip-shaped hole formed therein. The strip-shaped hole is fitted onto the outer side of the eccentric shaft 68. A micromotor 66 is fixed to the proximal end of the base 61. The rotating shaft of the micromotor 66 is in driving connection with the rotating shaft of the turntable 67. For example, a driven bevel gear is mounted on the rotating shaft of one of the turntables 67, and a driving bevel gear is mounted on the rotating shaft of the micromotor 66. The driving bevel gear meshes with the driven bevel gear, resulting in a speed ratio of 1:4.

[0039] Thus, when the micromotor 66 is controlled to rotate by the controller, it can drive the piston 63 to move back and forth in a linear direction, thereby causing the air or liquid pressure in the lower active chamber 51 to increase or decrease alternately. The increase or decrease in the pressure of the gas or liquid in the lower active chamber 51 directly acts on the column blocks 53 in all the straight heat pipes 24, so that the multiple column blocks 53 can be lifted and moved, and thus the solid-liquid two-phase medium located in each straight heat pipe 24 can be lifted and moved, thereby controlling the stroke of the piston 63. According to the cross-sectional area S1 of the piston 63 and the stroke distance d, the volume of the gas or liquid compressed each time V1=S1×d can be calculated. At the same time, according to the inner cross-sectional area S2 of each straight heat pipe 24 and the height difference h to be lifted and lowered, the total lifting volume V2=S2×h×n of the solid-liquid two-phase medium of n straight heat pipes 24 can be calculated, ensuring V1≈V2, so that the amplitude of the lifting and lowering movement controls the height difference h between the inner groove 22 and the outer groove 23. Therefore, when the temperature inside the corrugated plate 21 is higher and the outside is lower (when the room is cooled by air conditioning), the higher temperature inside causes the solid-liquid two-phase medium to transform into a liquid state, while the lower temperature outside causes it to transform into a solid state. Multiple inner grooves 22 correspond to multiple liquid segments, and multiple outer grooves 23 correspond to multiple solid segments. The medium switching system 5 and reciprocating drive mechanism 6 enable the rapid transfer of solids to inner grooves 22 and liquids to outer grooves 23. Once the inner grooves 22 become liquid and the outer grooves 23 become solid, the lifting and lowering relationships are reversed again, allowing the solid-liquid two-phase medium to absorb heat inside as it melts into a liquid state and release heat outside as it solidifies into a solid state. In this structure, the through-hole heat pipe 24 remains in a straight-through state, preventing the problem of solid matter getting stuck.

[0040] In order to further improve the efficiency of heat exchange, this embodiment also adds an external circulation system 3 and an internal circulation system 4. Figure 5 and Figure 6As shown, the external circulation system 3 includes an outer plate 31, a front sealing plate 32, an outer air inlet 33, an outer return chamber 34, an outer wall air inlet 35, an outer trough guide channel 36, a rear wall chamber 37, an outer exhaust fan 38 and an outer chamber exhaust hole 39. The outer plate 31 is fixed to the outer wall of the corrugated plate 21, thereby forming a plurality of outer trough guide channels 36 between the outer plate 31 and the outer trough 23. The front sealing plate 32 is fixed to the front end of the corrugated plate 21 and is provided with a plurality of outer air inlet 33. Each outer air inlet 33 corresponds to the head end of a corresponding outer trough guide channel 36. The outer return chamber 34 is fixed to the rear end of the corrugated plate 21. The rear end of each outer trough guide channel 36 is connected to the inner cavity of the outer return chamber 34 through the outer wall air inlet 35. At the same time, a rear wall cavity 37 is fixed to the rear side of the rear wall 14 of the cabinet body 11. The inner wall (or rear wall) of the outer return cavity 34 communicates with the inner cavity of the rear wall cavity 37 via an outer cavity exhaust hole 39. An external exhaust fan 38 is installed at the rear end of the rear wall cavity 37. When the external exhaust fan 38 rotates, it drives room temperature air through the multiple external air inlet holes 33 into the outer tank guide channel 36. The air is then discharged through the outer return cavity 34 and the rear wall cavity 37, thus forming an external circulation. The external circulating airflow cools the phase change material in the outer tank guide channel 36, causing it to solidify. When the medium switching system 5 and the reciprocating drive mechanism 6 operate to cause each segment of the solid state to enter the inner tank guide channel 46, the internal circulating airflow absorbs heat in the inner tank guide channel 46, causing the phase change material in the inner tank guide channel 46 to liquidize. When the medium switching system 5 and the reciprocating drive mechanism 6 operate to cause each segment of the liquid state to enter the outer tank guide channel 36, the circulation is complete.

[0041] like Figure 3-5As shown, the internal circulation system 4 includes an inner plate 41, an inner air inlet hole 42, an inner reflow cavity 43, an inner cavity exhaust hole 44, a main air outlet pipe 45, an inner groove guide channel 46, a top wall cavity 47 and an inner exhaust fan 48. The inner plate 41 is fixed to the inner side wall of the corrugated plate 21, thereby forming a plurality of inner groove guide channels 46 between the inner plate 41 and the inner groove 22. A series of inner air inlet holes 42 are respectively provided on the surface of the inner plate 41. The inner air inlet holes 42 can connect the inner cavity of the cabinet body 11 with the inner groove guide channels 46. An inner reflow cavity 43 is fixed at the rear position of the inner plate 41. The rear end of each inner groove guide channel 46 is connected to the inner cavity of the inner reflow cavity 43 (the inner reflow cavity 43 can be filled with desiccant). A main air outlet pipe 45 is installed on the top of the inner reflow cavity 43. A top wall cavity 47 is provided at the top of the inner cavity of the cabinet body 11, and an internal exhaust fan 48 is installed in the center of the top wall cavity 47. The total air outlet pipe 45 is connected to the inner cavity of the top wall cavity 47, thereby forming an internal circulation. When the internal exhaust fan 48 rotates, the airflow in the inner cavity of the cabinet body 11 can be sucked into each inner groove guide channel 46. After being cooled by the phase change material in the inner groove guide channel 46, it refluxes through the inner reflux cavity 43, and then passes through the total air outlet pipe 45 and the top wall cavity 47. The cooled dry airflow is discharged into the inner cavity of the cabinet body 11 again.

[0042] The above solution can be cooled at room temperature without the need for an additional cooling system. Its core technical advantages are: (1) Fully enclosed and refrigerant-free: It relies on the latent heat absorption / release of phase change materials, without the need for compressors or refrigerants, reducing equipment complexity and cost; (2) Room temperature compatibility: The external loop directly uses ambient temperature air for cooling, which is suitable for conventional air-conditioning environments (25–35°C); (3) High energy efficiency: The energy consumption of micro motors and low-power fans is much lower than that of traditional refrigeration systems, and the long-term operating costs are significantly optimized; (4) Anti-stuck design: The straight-through heat pipe and column support rod structure ensure smooth movement of solid media, improving system reliability.

[0043] When using the above solution, first check the sealing of the cabinet unit 1 (whether the front door 12, side wall 13, and rear wall 14 are closed), ensure that the insulation layer 15 is not damaged, confirm that the mesh cover 16 of the external circulation system 3 is not blocked, and the inner air inlet 42 of the internal circulation system 4 is unobstructed, verify whether the breathing nozzle 56 of the medium switching system 5 is ventilated normally, and the power supply of the micro motor 66 of the reciprocating drive mechanism 6 is normal; then turn on the micro motor 66, drive the turntable 67 to drive the eccentric shaft 68 to rotate, and push the piston 63 to reciprocate in the piston cylinder 62 through the T-shaped rod 69, and the reciprocating motion of the piston 63 causes the breathing tube 64 to alternately apply pressure to the lower active chamber 51. Positive and negative pressures are applied to drive the column block 53 in the straight heat pipe 24 to move up and down, forcing the solid-liquid two-phase medium to flow periodically between the inner and outer grooves (the liquid and solid alternately occupy the inner / outer grooves); then the external exhaust fan 38 is turned on, and the external room temperature air enters the outer groove guide channel 36 from the outer air inlet 33, flows through the surface of the solid phase change material in the outer groove 23, and is discharged through the outer reflux chamber 34 and the rear wall chamber 37; then the internal exhaust fan 48 is turned on, and the high-temperature air in the cabinet enters the inner groove guide channel 46 from the inner air inlet 42, flows through the surface of the liquid phase change material in the inner groove 22, and returns to the cabinet through the inner reflux chamber 43, the main air outlet pipe 45 and the top wall chamber 47.

[0044] Solid-liquid phase change materials (such as paraffin) partially melt into liquid after absorbing heat in the cabinet. The latent heat absorption significantly reduces the airflow temperature, achieving rapid cooling in the cabinet. The internal circulation forms a closed-loop dry airflow (with optional desiccant), preventing condensation in the cabinet and ensuring the safety of electronic equipment.

[0045] During cooling operation, the reciprocating drive mechanism 6 periodically switches the pressure direction, causing the solid-liquid two-phase medium to migrate between the inner and outer grooves, i.e., the inner groove 22 → the outer groove 23, and the liquid phase change material transfers to the outside with heat; solidifies and releases heat in the outer circulating airflow, i.e., the outer groove 23 → the inner groove 22, and the solid phase change material transfers to the inside and absorbs heat and melts in the inner circulating airflow.

[0046] The straight design of the heat pipe 24 prevents solid-state media from getting stuck, ensuring stable flow of the phase-change material. Through the solid-liquid phase change cycle, heat is efficiently transferred from the cabinet to the external environment, achieving the same effect as liquid cooling but requiring only air cooling energy. Temperature sensors monitor the cabinet temperature and the phase change state of each section of the corrugated bare wall 2, dynamically adjusting the speed of the micromotor 66 and controlling the frequency of medium switching (speeding up switching at high temperatures to enhance heat dissipation).

[0047] The internal / external exhaust fan speed adjusts the airflow rate according to the heat load, adapts to the heat dissipation requirements under different loads, maintains the temperature inside the cabinet stable near the melting point of the phase change material, and maximizes the latent heat utilization efficiency.

[0048] During shutdown and maintenance, turn off the inner exhaust fan 48, outer exhaust fan 38 and micro motor 66 in sequence, regularly check the medium filling amount in the straight heat pipe 24, clean the dust on the mesh cover 16 and the inner air inlet 42, and replace the desiccant in the inner reflux chamber 43.

[0049] Example 2: Based on Example 1, an internal circulation system is not used, and no inner plate is fixed to the inner wall of the corrugated plate 21. Because a series of evenly distributed inner grooves 22 expose straight heat pipe sections, even in the absence of an internal circulation system, the straight heat pipe sections in the inner grooves 22 of the inner wall of the bare corrugated plate 2 can still release cooling energy into the cabinet.

[0050] Example 3: Based on Example 1 or 2, an external circulation system is not used, and no external plate is fixed to the outer wall of the corrugated plate 21. Because a series of evenly distributed outer grooves 23 expose straight heat conducting pipe sections, even in the absence of an external circulation system, the straight heat conducting pipe sections in the outer grooves 23 of the outer wall of the corrugated bare plate 2 can directly absorb cold air from the lower indoor temperature.

[0051] Example 4: Based on Example 1, when it is necessary to add vertical and / or horizontal partitions in the inner cavity of the cabinet body 11, the following method is used: Figure 6 (2) The structural form shown, Figure 6 (2) is in Figure 6 (1), two corrugated plates 21 are symmetrically fixed to form a closed channel 361, which can be used as an outer trough guide channel. A front sealing plate 32 is fixed to the front end of the corrugated plate 21 and a plurality of external air inlet holes 33 are opened on the front sealing plate 32. Each external air inlet hole 33 corresponds to the head end of the corresponding closed channel 361. The rest of the parts are the same as those in Example 1.

[0052] Example 5: Based on Example 1, the inner and / or outer circulation systems are not used. Instead, the inner and / or outer flow channels 46 and / or 36 in Example 1 are sealed, and filled with a heat-conducting medium. For example, silicone oil, which is resistant to high and low temperatures, can effectively fill the tiny gaps in the channels and evenly conduct heat or cold from the heat pipe 24.

[0053] Example 6: Based on the above-mentioned special embodiment, the free strut 54 is designed as a conduit with an inner cavity. After the free strut 54 passes through the column block 53, its inner cavity can communicate with the inner cavity of the straight-through heat pipe 24. However, the end of the free strut 54 is fitted with a reliable sealing plug. Replacing the phase change material: This solution uses a paraffin-based PCM (melting point typically 25°C) phase change material with a replacement cycle of 12-24 months. When replacing the phase change material, after opening the sealing plugs of the upper and lower free struts 54, the phase change material in the straight-through heat pipe 24, when liquid, can flow out from the bottom and be emptied. Then, new phase change material is injected from the bottom up until it overflows from the top, and the ports of the upper and lower column blocks are sealed.

[0054] The above specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and are not intended to limit the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-performance computer two-phase cooling isolation heat exchange cabinet, comprising a cabinet unit (1) and a corrugated bare wall (2), characterized in that: The invention also includes a medium switching system (5) and a reciprocating drive mechanism (6). The corrugated bare wall (2) includes a corrugated plate (21) and a straight heat pipe (24). The inner side of the corrugated plate (21) has an inner groove (22) and the outer side has an outer groove (23). A plurality of parallel straight heat pipes (24) are fixed vertically through the center of the side wall of each side groove. The straight heat pipes (24) are linear. Each vertical straight heat pipe (24) simultaneously penetrates multiple horizontal inner grooves (22) and multiple A transverse outer groove (23) is formed, and a solid-liquid two-phase medium is filled in the straight heat conducting pipe (24). A medium switching system (5) for driving the solid-liquid two-phase medium in the straight heat conducting pipe (24) to flow back and forth is fixed at the bottom and top of the corrugated plate (21). The medium switching system (5) includes a lower active cavity (51) and an upper follower cavity (52). The lower active cavity (51) is fixed to the bottom of the corrugated plate (21), and the upper follower cavity (52) is fixed to the bottom of the corrugated plate (21). (21), the bottom and top of the straight heat pipe (24) are respectively connected to the lower active cavity (51) and the upper follower cavity (52), and column blocks (53) are respectively installed in the upper and lower end pipe openings of the straight heat pipe (24), and the outer end of each column block (53) is connected to a free support rod (54), and a limit baffle (55) is installed on the free support rod (54), and the limit baffle (55) is respectively located in the lower active cavity (51) and the upper follower cavity (52); A breathing nozzle (56) is provided on the top or side of the upper follower chamber (52); the reciprocating drive mechanism (6) is used to alternately provide positive and negative pressures to the lower active chamber (51) to increase or decrease the gas or liquid in the lower active chamber (51), thereby driving each column (53) to move upward or downward in the corresponding straight heat pipe (24), and further driving the solid-liquid two-phase medium in the straight heat pipe (24) to move back and forth between the adjacent inner groove (22) and outer groove (23).

2. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 1 is characterized in that: The side wall (13) of the cabinet unit comprises at least a corrugated bare wall (2), or an outer plate (31) is fixed on the outer side of the corrugated bare wall (2), or an inner plate (41) is fixed on the inner side of the corrugated bare wall (2).

3. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 1, characterized in that: The reciprocating drive mechanism (6) includes a base (61) and a micro motor (66). The base (61) is fixed to the bottom of the lower active chamber (51). A piston cylinder (62) is fixedly mounted on the base (61). A piston (63) is sleeved in the piston cylinder (62). A breathing tube (64) is connected to the distal end of the piston cylinder (62). The breathing tube (64) is communicated with the inner cavity of the lower active chamber (51). The lower active chamber (51) contains fluid. The micro motor (66) drives the piston (63) to reciprocate through the linear drive mechanism.

4. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 3 is characterized in that: The linear drive mechanism includes a sealing cover (65) fixedly mounted on the base (61), shaft seats are provided at both ends of the inner side of the sealing cover (65) and a pair of parallel turntables (67) are installed, and a rotating shaft is provided at the center of the outer side of the two turntables (67), and each rotating shaft is installed in the corresponding shaft seat, and an eccentric shaft (68) is connected between the two turntables (67); a T-shaped rod (69) is fixed at the proximal center of the piston (63), and the T-shaped rod (69) includes a horizontal rod and a vertical rod, and a strip hole is provided on the vertical rod, and the strip hole is sleeved on the outer side of the eccentric shaft (68); the micro motor (66) is fixedly mounted at the proximal end of the base (61), and the rotating shaft of the micro motor (66) is connected to the rotating shaft of the turntable (67) in a transmission manner.

5. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 1, characterized in that: The outer circulation system (3) is also included. The outer circulation system (3) includes an outer plate (31), a front sealing plate (32), an outer return chamber (34), a rear wall chamber (37) and an outer exhaust fan (38). The outer plate (31) is fixed to the outer wall of the corrugated plate (21). A plurality of outer groove guide channels (36) are formed between the outer plate (31) and the outer groove (23). A front sealing plate (32) is fixed to the front end of the corrugated plate (21) and a plurality of outer air inlet holes (33) are opened on the front sealing plate (32). Each external air inlet hole (33) corresponds to the head end of the corresponding external trough guide channel (36); an external return chamber (34) is fixed at the rear end of the corrugated plate (21); the rear end of each external trough guide channel (36) is connected to the inner cavity of the external return chamber (34); a rear wall chamber (37) is fixed on the outer side of the rear wall (14) of the cabinet body of the cabinet unit; the external return chamber (34) is connected to the inner cavity of the rear wall chamber (37); a hole is opened at the rear end of the rear wall chamber (37) and the external exhaust fan (38) is installed.

6. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 1, characterized in that: The inner circulation system (4) includes an inner plate (41), an inner reflux cavity (43), a top wall cavity (47) and an inner exhaust fan (48). The inner plate (41) is fixed to the inner wall of the corrugated plate (21). A plurality of inner groove guide channels (46) are formed between the inner plate (41) and the inner groove (22). A series of inner air inlet holes (42) are respectively provided on the surface of the inner plate (41). The inner groove guide channels (46) are connected to the cabinet main body through the inner air inlet holes (42). The cabinet body (11) has an inner cavity, an inner reflux cavity (43) is fixed at the rear position of the inner side plate (41), the rear end of each inner groove guide channel (46) is connected to the inner cavity of the inner reflux cavity (43), a main air outlet pipe (45) is installed on the top of the inner reflux cavity (43), a top wall cavity (47) is provided at the top of the inner cavity of the cabinet body (11), an inner exhaust fan (48) is installed at the center of the top wall cavity (47), and the main air outlet pipe (45) is connected to the inner cavity of the top wall cavity (47).

7. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 1, characterized in that: The free support rod (54) adopts a screw-type free support rod, and a double nut is installed on the thread of the end of the screw-type free support rod. The limit baffle is located between the double nuts and fixed. The double nuts are adjusted to change the position of the limit baffle.

8. The high-performance computer two-phase cooling isolation heat exchange cabinet according to claim 1, characterized in that: Ribs (25) are provided in the center of the inner groove (22) and / or the outer groove (23) of the corrugated plate (21) along the transverse direction.

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