Liquid-cooling cold plate device provided with micro-channels for enhancing heat exchange

Abstract

The invention provides a liquid-cooling cold plate device provided with micro-channels for enhancing heat exchange, which belongs to the technical field of liquid-cooling cold plates and comprises a shell, a heat conducting plate is arranged at the top of the shell, a heat insulating plate is arranged in the shell, and a cooling plate is arranged between the heat conducting plate and the heat insulating plate; the cooling plate comprises an upper plate and a lower plate, and a cooling flow channel is formed between the upper plate and the lower plate; flow collecting blocks are arranged at the two ends of the shell, flow collecting cavities are formed in the flow collecting blocks, the two flow collecting cavities are communicated through cooling flow channels, ports are formed in one ends of the two flow collecting blocks, and the two ports are connected with an external cooling equipment pipeline; a water inlet is formed in the bottom of one group of flow collecting blocks, and a drain outlet is formed in the bottom of the other group of flow collecting blocks; the water inlet is connected with a drain outlet pipeline, and a drain valve is arranged on the connecting pipeline; and a control module is arranged below the heat insulation plate. The device is composed of two groups of slow flow cavities and a plurality of groups of shunting flow channels, and is matched with a cooling flow channel of a filter block, a drain outlet and a blow-down valve, so that the device can clean dirt and impurities.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid-cooled cold plates, and more specifically, relates to a liquid-cooled cold plate device configured with microchannels for enhanced heat exchange. Background Art

[0002] In the field of electronic equipment heat dissipation, heat dissipation devices are often required. For example, in data centers, where a large number of servers operate densely, liquid cooling technology is often used to ensure stable server operation and prevent performance degradation or even hardware damage due to overheating. In this case, liquid cooling cold plates are needed to absorb and transfer the heat generated by the servers, thereby maintaining a suitable operating temperature for the servers.

[0003] However, traditional cold plates often use spiral cooling channels, which often accumulate dirt and impurities over long periods of use, reducing the cross-sectional area of ​​the cooling channels. However, traditional spiral cooling channels generally lack self-cleaning capabilities, resulting in daily operation. As a result, tiny particles and impurities carried in the coolant gradually adhere to the inner wall of the spiral channel over time, making cleaning difficult. These accumulated dirt and impurities, under the combined effects of fluid pressure and heat exchange, can easily lead to local blockage of the channel, resulting in poor coolant flow. This not only affects heat dissipation efficiency, causing local overheating of the equipment, reduced performance, and even failure, but also requires frequent shutdowns for manual cleaning and maintenance. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a liquid-cooled cold plate device configured with microchannels for enhanced heat exchange, so as to solve the technical problems in the prior art that the spiral cooling channel is prone to accumulation of dirt and impurities, is difficult to clean, and has affected heat dissipation efficiency.

[0005] The purpose and efficacy of the liquid-cooled cold plate device configured with microchannels for enhanced heat exchange of the present invention are achieved by the following specific technical means: A liquid-cooled cold plate device configured with microchannel enhanced heat exchange comprises a housing, a heat conducting plate is provided on the top of the housing, a heat insulating plate is provided inside the housing, and a cooling plate is provided between the heat conducting plate and the heat insulating plate; The top of the cooling plate contacts the bottom of the heat conducting plate, and the bottom of the cooling plate contacts the top of the heat insulating plate; The cooling plate includes an upper plate and a lower plate, and a cooling channel is formed between the upper plate and the lower plate; Both ends of the housing are provided with manifolds, and manifolds are provided in the manifolds. The two groups of manifolds are connected through the cooling channel. One end of the two groups of manifolds is provided with a port, and the two groups of ports are connected to the external cooling equipment pipeline; One group of manifold blocks has a water inlet at the bottom, and the other group of manifold blocks has a sewage outlet at the bottom; The water inlet is connected to the sewage outlet pipe, and a sewage valve is provided on the connecting pipe; A control module is provided below the heat insulation board.

[0006] According to a preferred embodiment, a sealing gasket is provided between the upper plate and the lower plate, a sealing groove is provided on the lower plate, the sealing gasket is clamped on the peripheral side of the sealing groove, and a sealing protrusion is provided on the upper plate; The sealing protrusion contacts the bottom of the sealing groove, and the upper plate and the lower plate are detachably connected by multiple groups of bolts.

[0007] According to a preferred embodiment, the cooling flow channel includes two groups of slow flow cavities and multiple groups of diversion flow channels, and the two groups of slow flow cavities are connected through multiple groups of diversion flow channels; One of the slow flow chambers is provided with a plurality of guide plates and two sets of mounting half seats, and the two sets of mounting half seats are respectively provided on the upper plate and the lower plate; The mounting half seat is provided with a mounting rod, both ends of the mounting rod are provided with sealing sleeves, and the mounting rod is clamped on the upper plate and the lower plate through the sealing sleeves; A diversion cavity and multiple groups of liquid inlets and outlets are formed between the two groups of mounting half seats, and the multiple groups of liquid inlets and outlets correspond to the multiple groups of diversion channels; The mounting rod is provided with multiple groups of water retaining protrusions, and each of the multiple groups of water retaining protrusions is provided with a water retaining ring; One end of each of the plurality of guide plates faces the liquid inlet of the cooling plate, and the other end is aligned with the liquid inlet of the mounting half seat.

[0008] According to a preferred embodiment, an adjustment cavity and a control cavity are further formed between the upper plate and the lower plate; Limit rods are provided at both ends of the mounting rod, and first springs are provided on both sets of limit rods, one end of the first spring contacts the limit rod, and the other end of the first spring contacts the adjustment cavity; A first armature is provided on one group of the limit rods, a first coil is provided in the control cavity, and the first armature is located in the first coil; The control module is electrically connected to the first coil.

[0009] According to a preferred embodiment, the diversion channel is provided with a water guide block near one end of the guide plate, and the water guide block is provided with a Venturi tube structure; The venturi tube structure comprises a contraction section, a throat section and an expansion section which are sequentially connected along the fluid flow direction, wherein the inlet end of the contraction section is close to the guide plate, and the outlet end of the expansion section is away from the guide plate and connected to the diversion channel; The contraction section and the expansion section are both truncated cone-shaped flow channels, the contraction section inlet is connected to the liquid outlet of the mounting half seat, and the throat is a cylindrical flow channel with a constant cross-section.

[0010] According to a preferred embodiment, a valve hole is provided in the water guide block, the valve hole is communicated with the throat portion, and a valve core is provided in the valve hole; The valve core is provided with a limit block, the inner wall of the valve hole is provided with a limit groove, and the limit block is slidably connected to the valve core through the limit groove; A second coil is provided on the water guide block, a push rod is provided above the valve core, a second armature is sleeved on the push rod, a second spring is sleeved on the valve core, and the second armature is located in the second coil; The control module is electrically connected to the second coil.

[0011] According to a preferred embodiment, a liquid storage tank is provided above the lower plate, and multiple groups of liquid pipes and a main pipe are provided in the upper plate, and one end of multiple groups of liquid distribution pipes are connected to the liquid storage tank through the main pipe; An adsorption channel is provided on the valve core, and the other end of the liquid dispensing tube is communicated with the throat through the adsorption channel. A sealing sleeve is also sleeved on the valve core.

[0012] According to a preferred embodiment, the diversion flow channel is provided with a water stop flap and a water outlet block at one end away from the guide plate, a water stop ball is provided in the water outlet block, and a plurality of water outlets are evenly provided on the water outlet block along the circumferential direction; A compression spring is provided between the water-stop ball and the water outlet block, and the water-stop ball contacts the water-stop flap through the compression spring.

[0013] According to a preferred embodiment, a filter block is provided at the bottom of the other group of slow flow chambers, a pressure pump is provided on the pipe connecting one group of manifold blocks and the cooling plate, and control valves are provided on the ports of both groups of manifold blocks; The control module is electrically connected to the pressure pump and the control valve respectively.

[0014] According to a preferred embodiment, a temperature sensor is provided in each of the manifold blocks, a water quality sensor is provided on the sewage outlet, and the control module is electrically connected to the temperature sensor and the water quality sensor respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention abandons the traditional spiral cooling channel and adopts a cooling channel composed of two groups of slow-flow chambers and multiple groups of diversion channels, and is equipped with a filter block, a drain port and a drain valve, so that the device can clean dirt and impurities, thereby improving the self-cleaning ability and long-term operation stability of the device. The device uses a filter block at the bottom of the slow-flow chamber to initially intercept tiny particles and impurities in the coolant, and then uses the drain port and drain valve to regularly discharge the coolant containing impurities, thereby avoiding the large accumulation of dirt and impurities in the cooling channel and ensuring that the cooling channel is always unobstructed. This improves the ability of the device to maintain good heat dissipation efficiency for a long time in various types of equipment that require heat dissipation, avoids affecting equipment performance due to channel blockage, and reduces equipment downtime caused by cleaning and maintenance.

[0016] 2. When using the device, the temperature and water quality of the coolant can be monitored through the temperature sensor in the manifold and the water quality sensor at the drain outlet, so that the device can promptly detect heat dissipation anomalies and the degree of coolant contamination, thereby improving the device's ability to perceive its own operating status. Then, relying on the electrical connection between the control module and the temperature sensor, water quality sensor, booster pump, and control valve, the device can automatically adjust the coolant flow rate, flow rate and other parameters based on the monitoring data, and respond to changes in heat dissipation requirements and water quality problems in a timely manner. This makes the device widely applicable to a variety of equipment that requires heat dissipation, ensuring stable operation of the equipment, reducing the risk of equipment failure caused by local overheating or coolant problems, and improving the device's ability to ensure stable operation of equipment in different application scenarios.

[0017] 3. The present invention provides a water guide block, a venturi tube structure, and components such as a valve core and a liquid storage tank in the diversion channel, so that the device can enhance the mixing of the coolant and the adsorption of impurities, thereby improving the comprehensive heat dissipation and impurity treatment capabilities of the device. The device uses the venturi tube structure to change the coolant flow rate to generate a pressure difference, causing the clean liquid in the liquid storage tank to mix with the coolant through the liquid separation pipe and the adsorption channel. This can not only enhance the heat exchange efficiency, but also use the adsorption channel to further adsorb and clean impurities in the coolant, thereby improving the device's ability to optimize the coolant quality and improve the heat dissipation effect in various heat dissipation scenarios, making it suitable for a wider range of thermal management demand scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the housing of the present invention; Figure 2 Schematic diagram of the structure of the heat conducting plate of the present invention; Figure 3 yes Figure 2 Enlarged view of area a in the middle; Figure 4 It is a structural schematic diagram of the lower plate of the present invention; Figure 5It is a structural schematic diagram of the upper plate of the present invention; Figure 6 It is a structural schematic diagram of the mounting rod of the present invention; Figure 7 It is a structural schematic diagram of the water outlet block of the present invention; Figure 8 It is a front view of the present invention; Figure 9 It is a structural schematic diagram of the liquid storage tank of the present invention; Figure 10 yes Figure 9 Enlarged view of area b; Figure 11 It is a schematic structural diagram of the water stop ball of the present invention; Figure 12 It is a schematic structural diagram of the temperature sensor of the present invention; Figure 13 It is a principle framework diagram of the present invention.

[0019] In the figure, the corresponding relationship between component names and reference numerals is as follows: 11. Housing; 12. Heat conducting plate; 13. Heat insulating plate; 14. Upper plate; 141. Sealing protrusion; 15. Lower plate; 151. Sealing groove; 16. Drain valve; 17. Manifold; 171. Manifold chamber; 172. Control valve; 173. Water quality sensor; 18. Control module; 19. Sealing gasket; 21. Slow flow chamber; 22. Diverter channel; 23. Guide plate; 24. Mounting half seat; 25. Mounting rod; 251. Water retaining protrusion; 252. Water retaining ring; 26. Sealing sleeve; 27. Limit rod; 28. First spring Spring; 29. ​​First armature; 31. First coil; 32. Water guide block; 321. Contraction section; 322. Throat; 323. Expansion section; 324. Valve hole; 325. Adsorption channel; 33. Valve core; 333. Sealing sleeve; 34. Second coil; 35. Push rod; 36. Second armature; 37. Second spring; 38. Liquid storage tank; 39. Liquid distribution pipe; 41. Main pipe; 42. Water stop flap; 43. Water outlet block; 44. Water stop ball; 45. Compression spring; 46. Filter block; 47. Pressure pump; 48. Temperature sensor. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but are not intended to limit the scope of protection of the present invention.

[0021] Example: Figures 1 to 13As shown, the present invention provides a liquid-cooled cold plate device configured with microchannel enhanced heat exchange, including a shell 11, a heat conducting plate 12 is provided on the top of the shell 11, a heat insulating plate 13 is provided inside the shell 11, and a cooling plate is provided between the heat conducting plate 12 and the heat insulating plate 13; the top of the cooling plate is in contact with the bottom of the heat conducting plate 12, and the bottom of the cooling plate is in contact with the top of the heat insulating plate 13; the shell 11 serves as a protective body for the entire device, providing protection for the internal components. The heat conducting plate 12 at the top can absorb the heat generated by the external object that needs to dissipate heat, and conduct the heat to the cooling plate below. The heat insulating plate 13 prevents heat from being transferred to the bottom of the shell 11, reducing heat loss, improving energy utilization efficiency, and ensuring that the device uses more energy to cool the heat source rather than useless heat loss.

[0022] The cooling plate includes an upper plate 14 and a lower plate 15, and a cooling channel is formed between the upper plate 14 and the lower plate 15. The coolant flows in the cooling channel in the cooling plate to take away the heat. The heat conducting plate 12 of the device can be made of copper, and the heat insulating plate 13 can be made of rock wool board. The outer shell 11 includes an outer layer of iron sheet and an inner layer is provided with an insulation layer to maintain a certain temperature inside the outer shell 11 to prevent the generation of condensed water.

[0023] Both ends of the housing 11 are provided with a manifold block 17, and a manifold cavity 171 is provided in the manifold block 17. The two groups of manifold cavities 171 are connected through a cooling channel. One end of the two groups of manifold blocks 17 is provided with a port, and the two groups of ports are connected to the pipeline of the external cooling device. Such a configuration realizes the circulation of the coolant between the liquid-cooled cold plate device and the external cooling device, and builds a complete heat exchange system. The manifold block 17 serves as a hub for the convergence and diversion of the coolant. The manifold cavity 171 inside the manifold block 17 provides a temporary storage and buffer space for the coolant, so that the coolant can smoothly enter and exit the cooling channel. When the coolant flows from the external cooling device into the manifold cavity 171 through the port, the manifold cavity 171 can distribute the coolant to the cooling channel connected thereto, ensuring that the flow distribution of the coolant in the cooling channel is relatively balanced, thereby improving the overall heat dissipation efficiency of the cooling channel. The ports provided on the manifold blocks 17 at both ends are interfaces for connecting the device to the external cooling device.

[0024] One group of manifolds 17 has a water inlet at the bottom, and the other group of manifolds 17 has a drain outlet at the bottom. The water inlet is connected to the drain outlet pipe, and a drain valve 16 is provided on the connecting pipe. This arrangement constructs an impurity cleaning and coolant maintenance system for the liquid-cooled cold plate device. The drain outlet at the bottom of the manifold 17 discharges impurities and dirty liquid. The water inlet and the drain outlet are connected by a pipe with a drain valve 16. When necessary, the normal circulation can be cut off and the flushing process can be started to maintain the coolant performance and the heat dissipation efficiency of the device, ensuring long-term stable operation of the device. The drain valve 16 can use a QV41 model electric ball valve, and the drain valve 16 can be switched on and off by the control module 18. The drain outlet is connected to the external drain pipe.

[0025] A control module 18 is provided below the heat shield 13. The heat shield 13 can block the low temperature from the cooling area above from affecting the control module 18. At the same time, the control module 18 can control the transmission and processing of signals. The control module 18 can adopt an Arduino Mega 2560 model microcontroller.

[0026] like Figures 2 to 5 As shown, a sealing gasket 19 is provided between the upper plate 14 and the lower plate 15, a sealing groove 151 is opened on the lower plate 15, the sealing gasket 19 is clamped on the side of the sealing groove 151, and the upper plate 14 is provided with a sealing protrusion 141; the sealing protrusion 141 is in contact with the bottom of the sealing groove 151, and the upper plate 14 and the lower plate 15 are disassembled and connected by multiple sets of bolts.

[0027] This arrangement is intended to ensure reliable sealing performance between the upper plate 14 and the lower plate 15 of the cooling plate. The sealing gasket 19 is placed between the sealing protrusion 141 of the upper plate 14 and the sealing groove 151 of the lower plate 15. When the upper plate 14 and the lower plate 15 are fastened by bolts, the sealing protrusion 141 is embedded in the sealing gasket 19 and pressed down to fill it in the sealing groove 151. On the one hand, this structure utilizes the elastic deformation of the sealing gasket 19 itself to fill the gap that may exist between the upper plate 14 and the lower plate 15 to prevent coolant leakage; on the other hand, the sealing groove 151 provides positioning for the sealing gasket 19 to avoid displacement during installation or operation, thereby ensuring the stability and reliability of the seal, ensuring the normal circulation of the coolant in the cooling channel, and maintaining good heat dissipation performance of the device. Furthermore, the detachable connection reduces the production difficulty of the cooling plate and facilitates cleaning. The sealing gasket 19 can be made of fluororubber.

[0028] like Figures 2 to 8 As shown, the cooling channel includes two sets of slow-flow cavities 21 and a multi-component flow channel 22, which are connected by the multi-component flow channel 22. The cooling channel is composed of two sets of slow-flow cavities 21 and the multi-component flow channel 22 and is interconnected. The slow-flow cavities 21 buffer the coolant, reducing flow rate, turbulence and pressure fluctuations, and allowing the coolant to be distributed. The multi-component flow channel 22 increases the contact area between the coolant and the cooling plate, extending the heat exchange path and time, fully absorbing heat, improving heat dissipation efficiency, and ensuring that the device can stably cool the heat source.

[0029] One of the slow-flow chambers 21 is equipped with multiple sets of guide plates 23 and two sets of mounting half-seats 24, which are respectively arranged on the upper plate 14 and the lower plate 15. This arrangement further optimizes the flow of coolant within the slow-flow chamber 21. The guide plates 23 guide the flow of coolant, allowing it to flow more smoothly into the diversion channel 22, thereby improving the stability of heat exchange. The mounting half-seats 24 are respectively arranged on the upper plate 14 and the lower plate 15, not only providing a mounting base for other components, but also helping to stabilize the internal components and ensure the structural stability of the entire cooling channel during long-term operation.

[0030] Mounting half 24 is equipped with a mounting rod 25, with sealing sleeves 26 at each end. Mounting rod 25 is secured to upper and lower plates 14, 15 via these sealing sleeves. This arrangement ensures a connection and seal between the mounting rod 25 and the upper and lower plates 14, 15. The mounting rod 25, secured to the upper and lower plates 14, 15 by these sealing sleeves, provides stable support for components within the cooling channel and ensures structural stability. The sealing sleeves 26 prevent coolant from leaking from the connection between the mounting rod 25 and the upper and lower plates 14, 15, maintaining the seal of the cooling channel and ensuring proper coolant circulation, preventing leakage that could affect heat dissipation and device performance.

[0031] A diversion cavity and multiple groups of liquid inlets and outlets are formed between the two groups of mounting half seats 24, and the multiple groups of liquid inlets and outlets correspond to the multiple groups of diversion channels 22; The mounting rod 25 is provided with multiple sets of water-retaining protrusions 251, and each of the multiple sets of water-retaining protrusions 251 is provided with a water-retaining ring 252; the coolant in the slow-flow cavity 21 can be diverted to each diversion channel 22, optimizing the distribution of the coolant and improving the uniformity of cooling. The multiple sets of water-retaining protrusions 251 and the water-retaining ring 252 provided on the mounting rod 25 can further regulate the flow of the coolant in the diversion cavity. The water-retaining protrusions 251 change the local flow direction of the coolant, and the water-retaining ring 252 enhances the sealing effect, preventing the coolant from leaking during the diversion process, ensuring that the coolant flows into the diversion channel 22 along the predetermined path, and ensuring the stable operation of the cooling channel.

[0032] One end of each of the multiple groups of guide plates 23 faces the liquid inlet of the cooling plate, and the other end is aligned with the liquid inlet of the mounting half seat 24.

[0033] A regulating chamber and a control chamber are also formed between the upper plate 14 and the lower plate 15. Limiting rods 27 are located at both ends of the mounting rod 25. Both sets of limiting rods 27 are equipped with first springs 28, one end of which contacts the limiting rod 27, while the other end of the first spring 28 contacts the regulating chamber. One set of limiting rods 27 is equipped with a first armature 29, and the control chamber is equipped with a first coil 31, with the first armature 29 positioned within the first coil 31. The control module 18 is electrically connected to the first coil 31. The regulating chamber and the control chamber between the upper and lower plates 14 and 15 cooperate with related components to achieve control. The limiting rods 27 and the first springs 28 form an elastic limiting structure that resets the displacement of the mounting rod 25. The first armature 29 and the first coil 31 form an electromagnetic control assembly. When the control module 18 energizes the first coil 31, it generates a magnetic field that attracts or repels the first armature 29, driving the limiting rods 27 and the mounting rod 25 to move, changing the position of the deflector 23 and thereby adjusting the coolant flow pattern to meet different heat dissipation requirements.

[0034] Specifically, the device controls the movement of the mounting rod 25 through electromagnetism and the first spring 28, thereby regulating the number of flow channels. The control module 18 sends an electrical signal to the first coil 31 in the control cavity according to the heat dissipation requirements of the equipment. After being energized, the first coil 31 generates a magnetic field, exerts a force on the first armature 29, and drives the limit rod 27 and the mounting rod 25 connected thereto to move. The water-retaining protrusion 251 and the water-retaining ring 252 on the mounting rod 25 cooperate with the inlet and outlet of the diversion cavity, changing the opening and closing of the inlet and outlet when moving, controlling the amount of coolant flowing into the diversion channel 22, and realizing the control of the number of flow channels. The first spring 28 on the limit rod 27 plays a resetting role when the mounting rod 25 moves, pushing it back to its initial position when the magnetic field disappears, and restoring the conduction of the flow channel. Such a setting brings many beneficial effects: it can dynamically adjust the flow channel according to the heat generation of the equipment, increase the conductive flow channel to enhance heat dissipation when the heat generation is large, and reduce the flow channel when the heat generation is small to avoid energy waste and improve energy utilization efficiency; make the coolant distribution more reasonable, avoid local overheating, and extend the life of the equipment; the mounting rod 25 and the sealing sleeve 26 connect the upper plate 14 and the lower plate 15 to ensure structural stability and flow channel sealing, and avoid coolant leakage affecting heat dissipation.

[0035] like Figures 2 to 10As shown, a water guide block 32 is provided at one end of the diverter channel 22 near the guide plate 23, and a venturi tube structure is mounted on the water guide block 32. The venturi tube structure comprises a contraction section 321, a throat section 322, and an expansion section 323, which are sequentially connected along the direction of fluid flow. The inlet of the contraction section 321 is close to the guide plate 23, while the outlet of the expansion section 323 is away from the guide plate 23 and connected to the diverter channel 22. Both the contraction section 321 and the expansion section 323 are truncated cone-shaped flow channels. The inlet of the contraction section 321 is connected to the liquid outlet of the mounting half 24, and the throat section 322 is a cylindrical flow channel with a uniform cross-section. After the coolant flows out of the guide plate 23, it enters the contraction section 321 of the venturi tube structure. The inlet of the contraction section 321 is close to the guide plate 23, and the tube diameter gradually decreases along the direction of fluid flow. According to the continuity equation in fluid mechanics, that is, the volume of fluid passing through any cross-section of the flow tube per unit time remains unchanged, and Bernoulli's principle, under the condition of steady flow of an ideal fluid, there is a specific relationship between flow velocity and pressure. Under the premise of a constant coolant flow rate, as the diameter of the contraction section 321 gradually decreases, the flow rate of the coolant will inevitably increase, and the pressure will decrease accordingly. This increase in flow rate allows it to rush to the throat 322 more quickly. The throat 322 is the narrowest part of the venturi tube structure, where the flow rate of the coolant reaches its peak. This allows the coolant to carry the heat absorbed from the heat source forward at a faster speed, thereby increasing the rate of heat transfer.

[0036] Then, the coolant flows into the expansion section 323. The diameter of the expansion section 323 shows a trend of gradually increasing. Due to the change in the diameter, the flow rate of the coolant will decrease. However, we cannot only focus on the reduction in this flow rate. It should be noted that the high-speed flow accumulated in the contraction section 321 and the throat 322 greatly increases the average flow rate of the coolant in the entire Venturi tube structure. Moreover, as the diameter of the tube increases, the pressure in the expansion section 323 gradually recovers. This pressure recovery helps the coolant to more fully fill the diversion channel 22, avoid local uneven flow rate or poor flow, and further ensure that the coolant can flow continuously and quickly in the diversion channel 22.

[0037] A valve hole 324 is provided within the water guide block 32, communicating with the throat 322. A valve core 33 is located within the valve hole 324. A stopper is provided on the valve core 33, and a stopper groove is provided on the inner wall of the valve hole 324. The stopper is slidably connected to the valve core 33 via the stopper groove. The valve hole 324 in the water guide block 32 communicates with the throat 322, and the valve core 33 is positioned within the valve hole 324, regulating the flow of coolant through the throat 322. The upper stopper on the valve core 33 is slidably connected to the stopper groove on the inner wall of the valve hole 324. This not only restricts the movement of the valve core 33, forcing it to move axially along the valve hole 324, ensuring the stability of the adjustment action, but also prevents the valve core 33 from disengaging from the valve hole 324, ensuring structural reliability. By controlling the position of the valve core 33 in the valve hole 324, the flow area of ​​the coolant flowing through the valve hole 324 is changed, and the flow rate and flow velocity of the coolant entering the diversion channel 22 are adjusted to adapt to different heat dissipation requirements and optimize the heat dissipation performance of the entire cooling system.

[0038] A second coil 34 is provided on the water guide block 32, a push rod 35 is provided above the valve core 33, a second armature 36 is sleeved on the push rod 35, a second spring 37 is sleeved on the valve core 33, and the second armature 36 is located inside the second coil 34; the control module 18 is electrically connected to the second coil 34. This arrangement constructs a coolant flow regulation structure based on electromagnetic control. The second coil 34 on the water guide block 32 is electrically connected to the control module 18 and receives the electrical signal sent by the control module 18. When the control module 18 issues an instruction based on the heat dissipation requirements of the equipment, the second coil 34 is energized to generate a magnetic field. The second armature 36 located inside the second coil 34 will be subjected to an upward or downward electromagnetic force under the action of the magnetic field.

[0039] The second armature 36 is mounted on the push rod 35, driving the push rod 35 to move along with it. The push rod 35 is connected to the valve core 33 below, and the valve core 33 is mounted with a second spring 37. When the second armature 36 is moved upward by the electromagnetic force, the push rod 35 pushes the valve core 33 upward to overcome the elastic force of the second spring 37. The flow area of ​​the valve hole 324 increases, and more coolant can enter the diverter channel 22 through the valve hole 324, which increases the flow rate and enhances the heat dissipation capacity. Conversely, when the electromagnetic force causes the second armature 36 to move downward, the valve core 33 moves downward under the action of the second spring 37, reducing the flow area of ​​the valve hole 324, reducing the coolant flow rate and flow rate, and meeting the requirements of low heat dissipation scenarios.

[0040] A liquid storage tank 38 is provided above the lower plate 15, and a multi-component liquid pipe 39 and a main pipe 41 are provided in the upper plate 14. One end of the multi-component liquid pipe 39 is connected to the liquid storage tank 38 through the main pipe 41; an adsorption channel 325 is provided on the valve core 33, and the other end of the liquid distribution pipe 39 is connected to the throat 322 through the adsorption channel 325. The valve core 33 is also provided with a sealing sleeve 333. This arrangement constitutes a storage and distribution system for the coolant. The liquid storage tank 38 stores a certain amount of cleaning liquid, and the cleaning liquid is transported to the multi-component liquid pipe 39 through the main pipe 41 to achieve preliminary distribution of the cleaning liquid. The adsorption channel 325 on the valve core 33 further improves the delivery path of the cleaning liquid. The other end of the liquid distribution pipe 39 is connected to the throat 322 via the adsorption channel 325, so that the cleaning liquid that has undergone preliminary distribution can enter the throat 322 of the Venturi tube structure. The sealing sleeve 333 mounted on the valve core 33 ensures the sealing of the cleaning liquid when passing through the adsorption channel 325, thereby ensuring the sealing of the entire system and maintaining the normal flow and distribution of the cooling liquid. The cleaning liquid can be deionized water, and the cooling liquid can be an ethylene glycol aqueous solution.

[0041] Specifically, when the temperature rises and reaches the preset high temperature threshold, the control module 18 sends an electrical signal to the second coil 34 on the water guide block 32. The second coil 34 is energized to generate a magnetic field, which attracts the second armature 36 located therein to move upward. Because the second armature 36 is sleeved on the push rod 35, it drives the push rod 35 to push the valve core 33 to overcome the elastic force of the second spring 37 and move upward, and the flow area of ​​the valve hole 324 increases. At this time, more coolant enters the diversion channel 22 from the valve hole 324, the flow rate is accelerated, and the heat dissipation capacity is enhanced. Conversely, when the temperature drops to the preset low temperature threshold, the control module 18 sends a reverse electrical signal. The second coil 34 generates a reverse magnetic field, the second armature 36 is subjected to a downward electromagnetic force, and the valve core 33 moves downward under the action of the second spring 37. The flow area of ​​the valve hole 324 is reduced, reducing the flow rate and flow rate of the coolant. During this process, the control valve core 33 is moved upward, causing the adsorption channel 325 to connect the liquid distribution pipe 39 with the diversion flow channel 22. Due to the negative pressure effect generated by the throat 322 of the Venturi tube structure, when the coolant quickly passes through the throat 322, a negative pressure zone is formed in the adsorption channel 325. This negative pressure environment can attract the cleaning liquid in the liquid storage tank 38 through the main pipe 41, the liquid distribution pipe 39, and the adsorption channel 325 into the diversion flow channel 22. The liquid flows along with the coolant, achieving cleaning of the internal flow channels of the entire cooling system.

[0042] like Figure 2 、 4As shown in Figures 5, 7, 8, and 11, a water stop flap 42 and a water outlet block 43 are provided at one end of the diversion channel 22 away from the guide plate 23. A water stop ball 44 is provided in the water outlet block 43, and multiple groups of water outlets are evenly arranged on the water outlet block 43 along the circumferential direction. A compression spring 45 is provided between the water stop ball 44 and the water outlet block 43, and the water stop ball 44 contacts the water stop flap 42 through the compression spring 45. During normal flow, the coolant pressure pushes the water stop flap 42 to overcome the elastic force of the compression spring 45, so that a gap is generated between the water stop flap 42 and the water stop ball 44, and the coolant flows evenly through the water outlet to the subsequent heat dissipation area, thereby improving the heat dissipation uniformity. During abnormal conditions, such as a sudden pressure drop or backflow, the compression spring 45 pushes the water stop ball 44 against the water stop flap 42 to close the water outlet, preventing the coolant from flowing back and ensuring unidirectional flow. At the same time, the structure can be dynamically adjusted as the coolant flow and pressure change. When the flow is large, the thrust of the water stop flap 42 is large and the gap increases. When the flow is small, the gap decreases, maintaining the flow and pressure in the system stable. The water stop flap 42 can be made of fluororubber.

[0043] A filter block 46 is installed at the bottom of the other set of slow-flow chambers 21. A booster pump 47 is installed in the pipe connecting one set of manifold blocks 17 to the cooling plate. Control valves 172 are installed at the ports of both manifold blocks 17. A control module 18 is electrically connected to the booster pump 47 and the control valve 172, respectively. The filter block 46 filters impurities from the coolant, protecting system components. When the equipment temperature rises, the control module 18 increases the efficiency of the booster pump 47 and adjusts the opening of the control valve 172 to enhance heat dissipation. When the temperature drops, the control module 18 reverses the adjustment, achieving energy-saving cooling and ensuring stable system operation. It also provides a power source for circulating cleaning.

[0044] like Figure 2 、 8As shown in Figures 1 and 12, a temperature sensor 48 is provided inside the manifold 17, and a water quality sensor 173 is provided on the sewage outlet. The control module 18 is electrically connected to the temperature sensor 48 and the water quality sensor 173, respectively. In the present invention, a temperature sensor 48 is deployed inside the manifold 17 to monitor the coolant temperature inside the manifold 17 and feed it back to the control module 18. By comparing the inlet and outlet temperatures of the coolant, the control module 18 can maintain the inlet and outlet temperature difference within a specific range during normal operation based on the principles of heat transfer and fluid mechanics. If the temperature difference is too large, there may be a blockage in the cooling flow. From the perspective of heat transfer theory, there may be an abnormality in heat dissipation, which may be due to insufficient coolant flow or decreased performance of the heat dissipation components. Combined with factors such as equipment operating condition data and ambient temperature, if the temperature difference gradually decreases with operating time and exceeds the normal fluctuation range, such as a decrease in the monthly average temperature difference, it indicates that the heat dissipation components may be aging. The control module 18 will issue an early warning based on this to ensure stable operation of the cooling system. When the cooling system discharges sewage, the water quality sensor 173 at the sewage outlet begins to function. This sensor focuses on detecting various indicators in the discharged coolant to determine the cleanliness of the coolant. These indicators include suspended matter, dissolved solids, and chemical contaminants. During normal operation, the coolant should maintain a certain level of cleanliness. When the coolant is discharged, the water quality sensor 173 transmits the detected data to the control module 18. If the test results show that the content of impurities, pollutants, etc. in the coolant is abnormal, indicating that the coolant cleanliness does not meet the standard, the control module 18 will react, either triggering an alarm to notify maintenance personnel, or adjusting the filter device to increase the filtering force to ensure that the discharged coolant meets the cleanliness standard and avoid damage to the system due to coolant contamination. It works together with the temperature sensor 48 to ensure the stable operation of the cooling system. The water quality sensor 173 can use the TH-S7 model water quality conductivity sensor, and the temperature sensor 48 can use the OMEGAPT100-SS-6 model probe temperature sensor.

[0045] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A liquid-cooled cold plate device configured with microchannel enhanced heat exchange, comprising a housing (11), characterized in that: A heat conducting plate (12) is provided on the top of the shell (11), a heat insulating plate (13) is provided inside the shell (11), and a cooling plate is provided between the heat conducting plate (12) and the heat insulating plate (13); The top of the cooling plate contacts the bottom of the heat conducting plate (12), and the bottom of the cooling plate contacts the top of the heat insulating plate (13); The cooling plate comprises an upper plate (14) and a lower plate (15), and a cooling channel is formed between the upper plate (14) and the lower plate (15); Both ends of the housing (11) are provided with manifold blocks (17), a manifold cavity (171) is provided in the manifold block (17), two groups of manifold cavities (171) are communicated with each other through the cooling channel, one end of each of the two groups of manifold blocks (17) is provided with a port, and the two groups of ports are connected to external cooling equipment pipelines; One group of the manifold blocks (17) has a water inlet at the bottom, and the other group of the manifold blocks (17) has a sewage outlet at the bottom; The water inlet is connected to the sewage outlet pipe, and a sewage valve (16) is provided on the connecting pipe; A control module (18) is provided below the heat insulation plate (13).

2. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 1, characterized in that: A sealing gasket (19) is provided between the upper plate (14) and the lower plate (15); a sealing groove (151) is provided on the lower plate (15); the sealing gasket (19) is clamped on the circumference of the sealing groove (151); and a sealing protrusion (141) is provided on the upper plate (14); The sealing protrusion (141) contacts the bottom of the sealing groove (151), and the upper plate (14) and the lower plate (15) are detachably connected via multiple sets of bolts.

3. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 2, characterized in that: The cooling flow channel comprises two groups of slow flow cavities (21) and multiple groups of diversion flow channels (22), and the two groups of slow flow cavities (21) are connected through multiple groups of diversion flow channels (22); One of the slow flow chambers (21) is provided with a plurality of guide plates (23) and two sets of mounting half seats (24), and the two sets of mounting half seats (24) are respectively arranged on the upper plate (14) and the lower plate (15); The mounting half seat (24) is provided with a mounting rod (25), both ends of the mounting rod (25) are provided with sealing sleeves (26), and the mounting rod (25) is clamped on the upper plate (14) and the lower plate (15) through the sealing sleeves (26); A diversion cavity and multiple groups of liquid inlet and outlet ports are formed between the two groups of mounting half seats (24), and the multiple groups of liquid inlet and outlet ports correspond to the multiple groups of diversion flow channels (22); The mounting rod (25) is provided with a plurality of groups of water retaining protrusions (251), and each of the plurality of groups of water retaining protrusions (251) is provided with a water retaining ring (252); The plurality of groups of guide plates (23) each have one end facing the liquid inlet of the cooling plate, and the other end aligned with the liquid inlet of the mounting half seat (24).

4. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 3, characterized in that: An adjustment cavity and a control cavity are also formed between the upper plate (14) and the lower plate (15); Limit rods (27) are provided at both ends of the installation rod (25), and first springs (28) are provided on both sets of the limit rods (27), one end of the first spring (28) contacts the limit rod (27), and the other end of the first spring (28) contacts the adjustment chamber; A first armature (29) is provided on one set of the limiting rods (27), a first coil (31) is provided in the control cavity, and the first armature (29) is located in the first coil (31); The control module (18) is electrically connected to the first coil (31).

5. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 4, characterized in that: A water guide block (32) is provided at one end of the diversion flow channel (22) close to the guide plate (23), and a Venturi tube structure is provided on the water guide block (32); The venturi tube structure comprises a contraction section (321), a throat section (322), and an expansion section (323) which are sequentially connected along the fluid flow direction, wherein the inlet end of the contraction section (321) is close to the guide plate (23), and the outlet end of the expansion section (323) is away from the guide plate (23) and is connected to the diversion channel (22); The contraction section (321) and the expansion section (323) are both truncated cone-shaped flow channels, the inlet of the contraction section (321) is connected to the liquid outlet of the mounting half seat (24), and the throat (322) is a cylindrical flow channel with a uniform cross-section.

6. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 5, characterized in that: A valve hole (324) is provided in the water guide block (32), the valve hole (324) is in communication with the throat portion (322), and a valve core (33) is provided in the valve hole (324); A limit block is provided on the valve core (33), a limit groove is provided on the inner wall of the valve hole (324), and the limit block is slidably connected to the valve core (33) via the limit groove; A second coil (34) is provided on the water guide block (32), a push rod (35) is provided above the valve core (33), a second armature (36) is sleeved on the push rod (35), a second spring (37) is sleeved on the valve core (33), and the second armature (36) is located in the second coil (34); The control module (18) is electrically connected to the second coil (34).

7. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 6, characterized in that: A liquid storage tank (38) is provided above the lower plate (15), and multiple groups of liquid pipes (39) and a main pipe (41) are provided in the upper plate (14), and one end of multiple groups of liquid distribution pipes (39) are connected to the liquid storage tank (38) through the main pipe (41); An adsorption channel (325) is provided on the valve core (33), and the other end of the liquid dispensing tube (39) is connected to the throat (322) through the adsorption channel (325). A sealing sleeve (333) is also provided on the valve core (33).

8. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 7, characterized in that: A water stop flap (42) and a water outlet block (43) are provided at one end of the diversion flow channel (22) away from the guide plate (23); a water stop ball (44) is provided in the water outlet block (43); and a plurality of water outlets are evenly arranged on the water outlet block (43) along the circumferential direction. A compression spring (45) is provided between the water-stopping ball (44) and the water outlet block (43), and the water-stopping ball (44) contacts the water-stopping flap (42) via the compression spring (45).

9. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 8, characterized in that: A filter block (46) is provided at the bottom of another group of slow flow chambers (21), a pressure pump (47) is provided on a pipe connecting one group of the collecting blocks (17) and the cooling plate, and control valves (172) are provided on ports of both groups of the collecting blocks (17); The control module (18) is electrically connected to the pressure pump (47) and the control valve (172) respectively.

10. The liquid-cooled cold plate device with microchannel enhanced heat exchange according to claim 1, characterized in that: A temperature sensor (48) is provided in each manifold block (17), a water quality sensor (173) is provided on the sewage outlet, and the control module (18) is electrically connected to the temperature sensor (48) and the water quality sensor (173), respectively.

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