Pump-driven two-phase liquid cooling system and control method thereof

Abstract

The invention discloses a pump-driven two-phase liquid cooling system and a control method thereof. The pump-driven two-phase liquid cooling system comprises a cooling liquid circulation loop and two gas-liquid separation recirculation loops, the cooling liquid circulation loop comprises a closed loop formed by connecting a liquid storage tank, a liquid supplementing pump, an adjusting three-way pipe, two evaporators, two condensers and a control double-outlet device; the gas-liquid separation recycling loop comprises a gas-liquid separator, a gas compressor, a gas-liquid mixer and a pipeline connecting assembly. Two modes of automatic control and manual control are set, in the automatic control mode, the system is automatically adjusted according to data such as temperature and switching time, excessive manual intervention is not needed, intelligent operation is achieved, when manual control and adjustment are carried out, an operator can manually adjust the opening degree of the control valve through a rotating handle, and the control efficiency is improved. And the system can be flexibly adjusted according to actual requirements under special working conditions or during maintenance and overhaul, so that the flexibility and applicability of system control are improved.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling technology, and in particular to a pump-driven two-phase liquid cooling system and its control method. Background Technology

[0002] With the continuous development of electronic devices and their ever-increasing power, the heat generated has increased dramatically, placing higher demands on heat dissipation technology. Traditional heat dissipation methods, such as air cooling, are insufficient for high-power-density devices, failing to effectively control device temperature and leading to performance degradation, shortened lifespan, or even malfunctions. While single-phase liquid cooling technology has made some progress, it suffers from limited heat dissipation capacity and difficulty in fully utilizing the latent heat of the coolant. Pump-driven two-phase liquid cooling systems utilize the characteristic of coolant absorbing and releasing a large amount of latent heat during phase change, possessing greater heat dissipation potential. However, existing pump-driven two-phase liquid cooling systems still have some problems in practical applications.

[0003] On the one hand, the stability of the gas-liquid two-phase flow within the system is difficult to guarantee. Incomplete gas-liquid separation and uneven mixing often occur, affecting the stability and reliability of heat dissipation. On the other hand, the system's response to changes in heat load is not precise or timely enough. If the evaporator system overheats, it may directly lead to premature and excessive vaporization of the coolant, preventing the formation of a stable and efficient gas-liquid two-phase flow within the evaporator. This results in a reduction in the amount of coolant effectively participating in phase change heat transfer, decreasing the evaporator's heat absorption capacity and reducing the overall system's heat dissipation efficiency. It is also difficult to effectively control the temperature of the object being cooled. If the coolant flow distribution cannot be adjusted in real time according to heat load requirements, it will inevitably lead to damage to system components or directly affect the stability of the cooling system's operation, further causing energy waste or insufficient heat dissipation. In addition, the system's control method is relatively simple, lacking a mechanism for flexible switching between automatic and manual operation, making it difficult to meet diverse operational needs during special working conditions or maintenance.

[0004] Therefore, it is necessary to provide a new pump-driven two-phase liquid cooling system and its control method to solve the above-mentioned technical problems. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings and deficiencies of the prior art, the purpose of this invention is to provide a pump-driven two-phase liquid cooling system and its control method.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A pump-driven two-phase liquid cooling system includes: a coolant circulation loop and two gas-liquid separation and recirculation loops;

[0008] The coolant circulation loop includes a reservoir, a replenishment pump, a regulating three-way pipe, two evaporators, and two condensers. The reservoir, replenishment pump, and regulating three-way pipe are connected in sequence. The regulating three-way pipe is connected to the two evaporators through an output pipe and to a dual-outlet control device. The evaporators are connected to the condensers through a central pipe, and the condensers are connected to the reservoir through a return pipe.

[0009] The gas-liquid separation and recirculation loop includes a gas-liquid separator, a gas compressor, and a gas-liquid mixer. Each centrally located pipe is equipped with a gas-liquid separator. The gas compressor is connected to the gas outlet of the gas-liquid separator. The gas-liquid mixer is located on the output pipe and is connected to the outlet of the gas compressor.

[0010] Furthermore, the dual-outlet control device is used to regulate the flow distribution of coolant in the circuits containing the two evaporators. It includes: a control valve installed in the output pipe; valve stems on the two control valves; gears fixedly connected to the two valve stems; racks on the rear sides of the two gears; the two gears meshing with the two racks respectively; and a drive assembly between the two racks.

[0011] Furthermore, the gas-liquid separator adopts a centrifugal separation structure, the gas-liquid separator is equipped with a spiral guide plate inside, the gas-liquid mixer is equipped with multiple layers of staggered baffles inside, and the gas compressor is a scroll compressor.

[0012] Furthermore, the drive assembly includes a fixed frame with a crossbeam on it. Two limiting rods are fixed between the crossbeams, and two adjusting plates are symmetrically slidably connected to the two limiting rods. The two adjusting plates are respectively fixedly connected to one end of two racks. Both ends of the crossbeam are provided with protruding plates, and a crossbar is fixedly connected between the two protruding plates. A drive block is slidably connected to the crossbar, and an adjusting shaft is rotatably connected between the two protruding plates. A motor is mounted on one end of the protruding plate, and the output end of the motor is fixedly connected to one end of the adjusting shaft.

[0013] Furthermore, the side wall of the adjusting plate is provided with a positioning plate, the two end side walls of the driving block are provided with matching plates, the positioning plate is provided with a locking port, the matching plate is provided with a fixing cylinder, and a locking rod is slidably connected to one end of the tube wall of the fixing cylinder. A magnetic block is fixedly connected to the lower end of each locking rod, and a spring is sleeved on each locking rod. One end of each spring is connected to the two magnetic blocks respectively, and the other end of each spring is connected to the inner wall of each fixing cylinder respectively. An electromagnet is installed on the lower inner wall of each fixing cylinder.

[0014] Furthermore, the electromagnet has opposite magnetic poles to the magnetic block, and a throttle is installed at the top of the two valve stems.

[0015] Furthermore, the two control valves employ both automatic and manual control modes.

[0016] Furthermore, the automatic control specifically involves: starting the motor, driving the adjusting shaft to move, causing the drive block to drive the adjusting plate to move relative to or opposite to each other, using the two adjusting plates to drive the rack to move, causing the two gears to rotate in opposite directions, thereby driving the two valve stems to rotate in opposite directions, so as to automatically adjust the opening of the control valves in the two flow channels, so that the coolant enters the designated evaporator and achieves quantity regulation.

[0017] Furthermore, when the system needs to switch to manual control mode, the controller connected to the outer wall of the storage tank controls the electromagnet to be energized. Since the electromagnet and the magnetic block have opposite magnetic poles, the magnetic force generated by the electromagnet attracts the magnetic block, overcomes the spring force, and causes the lever to move downward and disengage from the locking port. At this time, the adjustment plate is unlocked, and the operator can manually adjust the control valve degree by turning the lever.

[0018] A control method for the pump-driven two-phase liquid cooling system includes the following steps:

[0019] S1 System Start-up and Data Monitoring: Start the pump-driven two-phase liquid cooling system, and the system starts running. Monitor the temperature data of the two evaporators in real time. The two evaporators are the first evaporator and the second evaporator.

[0020] S2 Evaporator Heat Load Judgment: The real-time temperature T of the first / second evaporator is used as the reference. 第一蒸发器 / T 第二蒸发器 With preset temperature value T 预设 Perform a comparison and judgment, if T 第一蒸发器 / T 第二蒸发器 >T 预设 This indicates that the heat load of the first / second evaporator is high, proceeding to the next step; if T 第一蒸发器 / T 第二蒸发器 ≤T 预设 If so, then return to the monitoring data stage;

[0021] S3 determines and controls the corresponding electromagnet to be energized: based on the detected real-time temperature T of the first / second evaporator. 第一蒸发器 / T 第二蒸发器 Is it greater than the preset temperature value T? 预设 By using a controller to energize the electromagnets in the two flow paths, the two levers can slide away from or insert into the locking holes on the two locking plates, thus achieving individual or synchronous unlocking. This completes the automatic control of rotating the valve levers and adjusting the opening of the control valves, thereby automatically regulating the coolant circulation loop.

[0022] S4. Control the motor to rotate in the forward direction: When it is determined that the real-time heat load of the first / second evaporator is high, the controller issues a command to control the output of the motor to rotate in the forward direction. The motor drives the adjustment shaft to rotate, which causes the drive block to move accordingly. This in turn drives the rack connected to the adjustment plate to move, causing the gear to rotate and drive the valve stem to rotate, thus adjusting the opening of the control valve connected to it.

[0023] S5. Switching Time Judgment: Determine the switching time t of the first / second evaporator. 第一蒸发器 / t 第二蒸发器 sequentially with the preset time period t 预设时段 Perform a comparison and judgment, if t 第一蒸发器 / t 第二蒸发器 ≥t 预设时段 Then proceed to the next step, if t 第一蒸发器 / t 第二蒸发器 <t 预设时段 If so, return to the continue time determination step;

[0024] S6. Secondary judgment of evaporator heat load: If the real-time temperature T of the first / second evaporator is... 第一蒸发器 / T 第二蒸 If the temperature of the generator is lower than the preset temperature value Tpreset, proceed to the next step; otherwise, remain silent.

[0025] S7. Automatic control reset: Reverse rotation of the control motor: When it is determined that the heat load of the first / second evaporator has returned to normal, the controller issues a command to control the output of the motor to rotate in reverse. The motor drives the adjustment shaft to rotate in reverse. Similarly, through the transmission of related structures, the opening of the two control valves is adjusted and reset in reverse.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] 1. This invention precisely controls the rotation of the motor by controlling the drive component, and through the transmission of the structure such as the adjusting shaft, drive block, rack, and gear, it precisely adjusts the opening of the control valve so that the coolant flows into the corresponding evaporator circuit as needed, effectively dealing with different heat load conditions, and realizing precise adjustment of the flow distribution of coolant in the two evaporator circuits, thereby ensuring the heat dissipation effect while avoiding energy waste.

[0028] 2. This invention sets up two control modes: automatic and manual, which can be flexibly switched. In automatic control mode, the system automatically adjusts based on data such as temperature and switching time, without much human intervention, achieving intelligent operation. When encountering special working conditions or maintenance, the opening of the two control valves can also be directly controlled manually. The operator can manually adjust the opening of the control valves using a throttle, and can flexibly adjust the system according to actual needs, ensuring the flexibility and applicability of system control in special working conditions or maintenance.

[0029] 3. This invention determines whether to energize the two electromagnets. Since the electromagnets and the magnetic blocks have opposite magnetic poles, the two magnetic blocks drive the two locking rods to move against the spring force, causing the two locking rods to leave the locking holes on the locking plates. This allows the two locking plates to be unlocked from the two mating plates independently. This further enables the control of the valve rods, allowing for automatic control and adjustment of the coolant flow rate in the evaporator under high heat load conditions, so as to maintain the equipment in good working order.

[0030] 4. This invention utilizes a coolant circulation loop to allow the coolant to absorb heat and undergo a phase change in the evaporator. The latent heat of the phase change is used to efficiently remove heat from the object being cooled. The heat is then released in the condenser, achieving cyclic heat dissipation. In conjunction with the gas-liquid separation recirculation loop, the gas-liquid separator efficiently separates the gas and liquid phases, the gas compressor compresses the gaseous coolant, and the gas-liquid mixer rapidly and uniformly mixes the gas and liquid. This ensures that the evaporator can continuously and efficiently utilize the latent heat of the coolant's phase change for heat dissipation, significantly improving overall heat dissipation efficiency and meeting the heat dissipation requirements of high-power equipment. Attached Figure Description

[0031] Figure 1 A system schematic diagram of a pump-driven two-phase liquid cooling system provided by the present invention;

[0032] Figure 2 for Figure 1 The diagram shown is a detailed structural schematic of an embodiment of the present invention.

[0033] Figure 3 for Figure 2 The diagram shows the structure of the regulating tee.

[0034] Figure 4 for Figure 3 The diagram shows the structure at point A.

[0035] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder;

[0036] Figure 6 A system control method diagram for a pump-driven two-phase liquid cooling system provided by the present invention.

[0037] In the picture:

[0038] 1-Liquid storage tank; 11-Controller; 12-Bottom pipe; 2-Replenishment pump; 21-Inlet pipe; 22-Outlet pipe; 3-Adjusting tee pipe; 31-Outlet pipe; 4-Evaporator; 5-Condenser; 6-Control valve; 61-Valve stem; 62-Gear; 63-Rack; 64-Fixing bracket; 641-Horizontal frame; 642-Protruding plate; 65-Limit rod; 66-Adjusting plate; 67-Horizontal bar; 671-Adjusting shaft ; 68-Drive block; 69-Motor; 7-Card plate; 71-Matching plate; 72-Fixing cylinder; 73-Card rod; 74-Magnetic block; 75-Spring; 76-Electromagnet; 77-Throttle; 8-Centered pipe; 81-Gas-liquid separator; 82-Gas compressor; 83-Gas-liquid mixer; 84-Mixing pipe; 9-First check valve; 91-Return pipe; 92-Second check valve; 10-Dual-outlet control device. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0040] Example 1

[0041] like Figure 1 As shown, a pump-driven two-phase liquid cooling system includes a coolant circulation loop and two gas-liquid separation and recirculation loops. The coolant circulation loop includes a closed loop formed by connecting a liquid storage tank 1, a replenishment pump 2, a regulating three-way pipe 3, two evaporators 4, two condensers 5, and a control dual-outlet device 10. The gas-liquid separation and recirculation loops include a gas-liquid separator 81, a gas compressor 82, a gas-liquid mixer 83, and pipe connection assemblies.

[0042] The specific connection method is as follows:

[0043] like Figure 2 As shown, the coolant circulation loop has a bottom pipe 12 on the storage tank 1. One end of the bottom pipe 12 is connected to the inlet pipe 21 of the replenishment pump 2. The outlet pipe 22 of the replenishment pump 2 is connected to the regulating three-way pipe 3. The output pipes 31 at both ends of the regulating three-way pipe 3 are respectively connected to two evaporators 4. A first one-way valve 9 is installed in each of the two output pipes 31. The two evaporators are the first evaporator and the second evaporator.

[0044] The flow distribution design of the regulating three-way pipe 3 needs to be optimized according to the heat load requirements of the two evaporators 4 to ensure that the coolant can be reasonably distributed to the two loops under different operating conditions. The two evaporators 4 are connected to the two condensers 5 respectively via two centrally located pipes 8. A return pipe 91 is installed at the output end of each of the two condensers 5, and the other end of each return pipe 91 is connected to the liquid storage tank 1. A second one-way valve 92 is installed in each of the two return pipes 91. The installation of the first one-way valve 9 and the second one-way valve 92 ensures that the coolant flows unidirectionally in the circulation loop, preventing backflow that could lead to system failure. The two condensers are designated as the first condenser and the second condenser.

[0045] like Figure 2 As shown, in the gas-liquid separation and recirculation loop, two gas-liquid separators 81 are respectively installed on two central pipes 8, two gas compressors 82 are respectively connected to the gas outlets of the two gas-liquid separators 81, and two gas-liquid mixers 83 are respectively installed on two output pipes 31 and are respectively connected to the outlets of the two gas compressors 82 through two mixing pipes 84.

[0046] The gas-liquid separator 81 adopts a centrifugal separation structure and is equipped with a spiral guide plate inside, which enables the gas-liquid mixed coolant to rotate rapidly in the separator and achieve efficient separation by using centrifugal force; the gas compressor 82 adopts a scroll compressor; the gas-liquid mixer 83 is equipped with multiple layers of staggered baffles inside, which allows the gaseous coolant and liquid coolant to come into full contact during the mixing process, quickly forming a uniform gas-liquid two-phase flow and improving the heat exchange efficiency of the evaporator 4.

[0047] like Figure 3 As shown, the dual-output control device 10 includes two output pipes 31 disposed between the regulating three-way pipe and the evaporator. The two output pipes 31 are respectively connected to both ends of the regulating three-way pipe 3, and a control valve 6 is installed in each of the two output pipes 31.

[0048] like Figure 4 As shown, each of the two control valves 6 is provided with a valve stem 61, and each of the two valve stems 61 is fixedly connected with a gear 62. Each of the two gears 62 is provided with a rack 63 on its rear side. The two gears 62 mesh with the two racks 63 respectively, and a drive assembly is provided between the two racks 63.

[0049] like Figure 4 As shown, the drive assembly includes a fixed frame 64, on which a crossbeam 641 is provided. Two limiting rods 65 are fixedly connected between the crossbeams 641. Two adjusting plates 66 are symmetrically slidably connected to the two limiting rods 65. The two adjusting plates 66 are respectively fixedly connected to one end of two racks 63. The frame structure formed by the crossbeam 641 and the limiting rods 65 plays a precise guiding and limiting role for the adjusting plates 66, ensuring that the adjusting plates 66 maintain linear motion during movement and avoiding abnormal meshing between the racks 63 and gears 62 due to deviation.

[0050] like Figure 4 As shown, both ends of the crossbar 641 are provided with protruding plates 642, and a crossbar 67 is fixedly connected between the two protruding plates 642. A drive block 68 is slidably connected to the crossbar 67, and an adjusting shaft 671 is rotatably connected between the two protruding plates 642. A motor 69 is installed on one end of the protruding plate 642, and the output end of the motor 69 is fixedly connected to one end of the adjusting shaft 671. The drive block 68 is provided with a threaded port, and the adjusting shaft 671 is a threaded rod with threads in opposite directions at both ends. When the motor 69 is started, its output end drives the adjusting shaft 671 to rotate, which drives the drive block 68 to drive the adjusting plate 66 to move relative to or in opposite directions. The two adjusting plates 66 drive the rack 63 to move, causing the two gears 62 to rotate in opposite directions, which in turn drives the two valve stems 61 to rotate in opposite directions. This achieves automatic adjustment of the opening of the control valves 6 in the two flow channels, allowing more coolant to flow into the designated evaporator 4 circuit, thus achieving efficient heat dissipation and flexible flow regulation.

[0051] like Figure 4 and Figure 5 As shown, each of the two adjusting plates 66 has a locking plate 7 on its side wall, and each of the two end side walls of the driving block 68 has a pairing plate 71. Each locking plate 7 has a locking port. Each of the two pairing plates 71 is fixedly connected to a fixing cylinder 72. Each of the two fixing cylinders 72 has a locking rod 73 slidably connected to one end of its tube wall. Each of the two locking rods 73 has a magnetic block 74 fixedly connected to its lower end. Each of the two locking rods 73 has a spring 75 sleeved on its upper end. Each of the two springs 75 has one end connected to the two magnetic blocks 74, and the other end connected to the inner wall of each of the two fixing cylinders 72. Each of the two fixing cylinders 72 has an electromagnet 76 installed on its lower inner wall.

[0052] In automatic control mode, spring 75 is in normal state, and lever 73 is inserted into the locking port of locking plate 7 to fix adjusting plate 66. When the system needs to switch to manual control mode, controller 11 installed on the outer wall of liquid storage tank 1 controls electromagnet 76 to be energized. Since the magnetic poles of electromagnet 76 and magnetic block 74 are opposite, the magnetic force generated by electromagnet 76 attracts magnetic block 74, overcoming the elastic force of spring 75, causing lever 73 to move downward and disengage from locking port. At this time, adjusting plate 66 is unlocked, and the operator can manually rotate valve stem 61 through handle 77 to manually adjust the opening of control valve 6.

[0053] like Figure 4 and Figure 5As shown, the two electromagnets 76 and the two magnetic blocks 74 have opposite magnetic poles, and a handle 77 is installed at the top of each of the two valve stems 61. The handle 77 is installed at the top of the valve stem 61 for easy gripping and rotation by the operator to achieve precise operation when manually adjusting the opening of the control valve 6. At the same time, the installation position and magnetic pole direction of the electromagnets 76 and magnetic blocks 74 must be strictly calibrated to ensure that sufficient magnetic force can be generated when energized to reliably unlock the locking lever 73, and that when de-energized, the locking lever 73 can accurately reset under the action of the spring 75 and insert into the locking hole, ensuring the reliability and stability of switching between automatic and manual control modes.

[0054] The working principle of the pump-driven two-phase liquid cooling system and its control method provided by the present invention is as follows: the liquid storage tank 1 is used to store coolant, the replenishment pump 2 draws out the coolant from the liquid storage tank 1 and delivers it to the regulating three-way pipe 3 through the bottom pipe 12. The regulating three-way pipe 3 distributes the coolant to two output pipes 31. Each output pipe 31 is equipped with a first one-way valve 9 to prevent the coolant from flowing back. The output pipes 31 are respectively connected to two evaporators 4. The coolant absorbs heat in the evaporator 4, causing the liquid coolant to undergo a phase change to a gaseous state.

[0055] Two evaporators 4 are connected to two condensers 5 through a central pipe 8. The gaseous coolant releases heat in the condenser 5 and re-condenses into a liquid state. The output end of the condenser 5 is connected to the liquid storage tank 1 through a return pipe 91. A second one-way valve 92 is installed in the return pipe 91 to ensure that the coolant can only flow back to the liquid storage tank 1 in one direction, thus completing the circulation of the coolant.

[0056] A gas-liquid separator 81 is installed on the central pipe 8. It adopts a centrifugal separation structure and has a spiral guide plate inside. When the gas-liquid mixed coolant enters the gas-liquid separator 81, it rotates at high speed under the action of the spiral guide plate. Due to the density difference between the liquid and gaseous states, the liquid coolant is thrown to the separator wall and flows down the wall to the bottom of the separator, while the gaseous coolant is discharged from the gas outlet of the separator. The gas compressor 82 is connected to the gas outlet of the gas-liquid separator 81. After the gaseous coolant enters the gas compressor 82, it is compressed, and the pressure and temperature increase. The gas-liquid mixer 83 is installed on the output pipe 31. It has multiple layers of staggered baffles inside. The compressed gaseous coolant and the liquid coolant output by the replenishment pump 2 are mixed in the gas-liquid mixer 83 to form a uniform gas-liquid two-phase flow, which then re-enters the evaporator 4 to participate in the circulation.

[0057] The dual-outlet control device 10 is used to regulate the flow distribution of coolant in the circuit containing the two evaporators 4. The flow distribution can be controlled automatically or manually.

[0058] When it is necessary to control the opening and closing of the two control valves 6, the system selects the required control mode based on the system judgment and participates in controlling the corresponding control valve 6. The motor 69 is started so that its output end drives the adjusting shaft 671 to rotate, driving the drive block 68 to move. The system controls whether the matching plates 71 at both ends of the drive block 68 are synchronously locked with the two locking plates 7. Then, the two adjusting plates 66 drive the rack 63 to move, causing the two gears 62 to rotate in opposite directions, which in turn drives the two valve stems 61 to rotate in opposite directions, so as to realize the automatic and stable adjustment of the opening of the control valves 6 in the two flow channels, so that more coolant flows into the designated evaporator 4 circuit, thereby achieving efficient heat dissipation and flexible flow regulation, which can adapt to different heat load requirements.

[0059] The controller 11 controls the corresponding electromagnet 76 to be energized. Since the electromagnet 76 and the magnetic block 74 have opposite magnetic poles, the two magnetic blocks 74 drive the two locking rods 73 to move against the elastic force of the spring 75, so that the two locking rods 73 slide away from the locking holes on the two locking plates 7, thereby realizing synchronous automatic control of rotating valve rod 61 to adjust the opening of control valve 6 respectively, and can automatically adjust the coolant circulation loop.

[0060] When maintenance is required, the system automatically remains silent and enters manual control mode. In manual control mode, the operator can manually rotate the valve stem 61 via the throttle 77 to adjust the opening of the control valve 6, enabling more flexible manual opening and closing adjustment of the coolant circulation loop.

[0061] Example 2

[0062] A control method for a pump-driven two-phase liquid cooling system, such as Figure 6 As shown, it includes the following steps:

[0063] P01. System Start-up and Data Monitoring: Start the pump-driven two-phase liquid cooling system and the system starts running. At this time, the temperature sensors and other monitoring devices in the system monitor the temperature data of the first evaporator and the second evaporator in real time.

[0064] P02, Evaporator Heat Load Judgment: The real-time temperature T of the first / second evaporator is used as the reference. 第一蒸发器 / T 第二蒸发器 With preset temperature value T 预设 Perform a comparison and judgment, if T 第一蒸发器 / T 第二蒸发器 >T 预设 This indicates that the heat load of the first / second evaporator is high, proceeding to the next step; if T 第一蒸发器 / T 第二蒸发器 ≤T 预设 If so, then return to the monitoring data stage.

[0065] P03. Determine whether to energize the corresponding electromagnet: based on the detected real-time temperature T of the first / second evaporator.第一蒸发器 / T 第二蒸发器 Is it greater than the preset temperature value T? 预设 The controller controls whether the electromagnets 76 in the two flow paths are energized, so that the two levers 73 slide away from or insert into the locking holes on the two locking plates 7, thereby achieving individual or synchronous unlocking. This completes the automatic control of rotating the valve lever 61, which adjusts the opening of the control valve 6, and can automatically regulate the coolant circulation loop.

[0066] P04. Control the motor to rotate in the forward direction: When it is determined that the real-time heat load of the first / second evaporator is high, the high load means that the real-time temperature of the evaporator is greater than the preset temperature. The controller issues a command to control the output of the motor to rotate in the forward direction. The motor drives the adjustment shaft to rotate, which causes the drive block to move. This, in turn, drives the rack connected to the adjustment plate to move, causing the gear to rotate and drive the valve stem to rotate. This adjusts the opening of the control valve connected to it, allowing more coolant to flow into the circuit where the corresponding evaporator is located, thereby enhancing the heat load response of the corresponding evaporator.

[0067] P05. Switching Time Judgment: Determine the switching time t of the first / second evaporator. 第一蒸发器 / t 第二蒸发器 sequentially with the preset time period t 预设时段 Perform a comparison and judgment, if t 第一蒸发器 / t 第二蒸发器 ≥t 预设时段 Then proceed to the next step, if t 第一蒸发器 / t 第二蒸发器 <t 预设时段 If so, return to the time determination step.

[0068] P06, Secondary judgment of evaporator heat load: If the real-time temperature T of the first / second evaporator... 第一蒸发器 / T 第 If the evaporator temperature is lower than the preset temperature value Tpreset, proceed to the next step; otherwise, remain in a silent state. The silent state specifically means maintaining the original state. That is, if the judgment result is that the real-time evaporator temperature is lower than the preset temperature, proceed to the next step of reset; otherwise, continue to maintain a large valve opening.

[0069] P07 Automatic Control Reset: Control Motor Reverse Rotation: When it is determined that the heat load of the first / second evaporator has returned to normal, the controller issues a command to control the motor output to rotate in reverse. The motor drives the adjusting shaft to rotate in reverse, and through the transmission of related structures, the opening of the two control valves is adjusted and reset in reverse.

[0070] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the embodiments described above. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A pump-driven two-phase liquid cooling system, characterized in that, include: Coolant circulation loop and two gas-liquid separation and recirculation loops; The coolant circulation loop includes a reservoir, a replenishment pump, a regulating three-way pipe, two evaporators, and two condensers. The reservoir, replenishment pump, and regulating three-way pipe are connected in sequence. The regulating three-way pipe is connected to the two evaporators through an output pipe and to a dual-outlet control device. The evaporators are connected to the condensers through a central pipe, and the condensers are connected to the reservoir through a return pipe. The gas-liquid separation and recirculation loop includes a gas-liquid separator, a gas compressor, and a gas-liquid mixer. Each centrally located pipe is equipped with a gas-liquid separator. The gas compressor is connected to the gas outlet of the gas-liquid separator. The gas-liquid mixer is located on the output pipe and is connected to the outlet of the gas compressor.

2. The pump-driven two-phase liquid cooling system according to claim 1, characterized in that, The dual-outlet control device is used to regulate the flow distribution of coolant in the circuits containing the two evaporators. It includes a control valve installed in the output pipe, valve stems on the two control valves, gears fixedly connected to the two valve stems, racks on the rear side of the two gears, the two gears meshing with the two racks respectively, and a drive assembly between the two racks.

3. The pump-driven two-phase liquid cooling system according to claim 1, characterized in that, The gas-liquid separator adopts a centrifugal separation structure, and a spiral guide plate is installed inside the gas-liquid separator. The gas-liquid mixer is equipped with multiple layers of staggered baffles inside. The gas compressor is a scroll compressor.

4. The pump-driven two-phase liquid cooling system according to claim 2, characterized in that, The drive assembly includes a fixed frame with a crossbeam on it. Two limiting rods are fixed between the crossbeams, and two adjusting plates are symmetrically slidably connected to the two limiting rods. The two adjusting plates are respectively fixedly connected to one end of two racks. Both ends of the crossbeam are provided with protruding plates, and a crossbar is fixedly connected between the two protruding plates. A drive block is slidably connected to the crossbar, and an adjusting shaft is rotatably connected between the two protruding plates. A motor is mounted on one end of the protruding plate, and the output end of the motor is fixedly connected to one end of the adjusting shaft.

5. The pump-driven two-phase liquid cooling system according to claim 4, characterized in that, The adjusting plate has a locking plate on its side wall, and the driving block has a pairing plate on both ends of its side wall. The locking plate has a locking port, and the pairing plate has a fixing cylinder. A locking rod is slidably connected to one end of the fixing cylinder. A magnetic block is fixedly connected to the lower end of each locking rod. A spring is sleeved on each locking rod. One end of each spring is connected to the two magnetic blocks, and the other end of each spring is connected to the inner wall of each fixing cylinder. An electromagnet is installed on the lower inner wall of each fixing cylinder.

6. The pump-driven two-phase liquid cooling system according to claim 5, characterized in that, The electromagnet has opposite magnetic poles to the magnetic block, and a throttle is installed at the top of the two valve stems.

7. The pump-driven two-phase liquid cooling system according to claim 6, characterized in that, The two control valves can be operated in both automatic and manual modes.

8. The pump-driven two-phase liquid cooling system according to claim 7, characterized in that, The automatic control specifically involves: starting the motor, driving the adjusting shaft to move, which in turn drives the driving block to move the adjusting plate in a relative or opposite direction. The two adjusting plates drive the rack to move, causing the two gears to rotate in opposite directions, which in turn drives the two valve stems to rotate in opposite directions, thereby automatically adjusting the opening of the control valves in the two flow channels, allowing the coolant to enter the designated evaporator and achieving quantity regulation.

9. The pump-driven two-phase liquid cooling system according to claim 7, characterized in that, When the system needs to switch to manual control mode, the controller connected to the outer wall of the storage tank controls the electromagnet to be energized. Since the electromagnet and the magnetic block have opposite magnetic poles, the magnetic force generated by the electromagnet attracts the magnetic block, overcomes the spring force, and causes the lever to move downward and disengage from the locking port. At this time, the adjustment plate is unlocked, and the operator can manually adjust the control valve degree by turning the lever.

10. A control method for a pump-driven two-phase liquid cooling system according to any one of claims 1-9, characterized in that, Includes the following steps: S1 System Start-up and Data Monitoring: Start the pump-driven two-phase liquid cooling system, and the system starts running. Monitor the temperature data of the two evaporators in real time. The two evaporators are the first evaporator and the second evaporator. S2 Evaporator Heat Load Judgment: The real-time temperature T of the first / second evaporator is used as the reference. 第一蒸发器 / T 第二蒸发器 With preset temperature value T 预设 Perform a comparison and judgment, if T 第一蒸发器 / T 第二蒸发器 >T 预设 This indicates that the heat load of the first / second evaporator is high, proceeding to the next step; if T 第一蒸发器 / T 第二蒸发器 ≤T 预设 If so, then return to the monitoring data stage; S3 determines and controls the corresponding electromagnet to be energized: based on the detected real-time temperature T of the first / second evaporator. 第一蒸发器 / T 第二蒸发器 Is it greater than the preset temperature value T? 预设 By using a controller to energize the electromagnets in the two flow paths, the two levers can slide away from or insert into the locking holes on the two locking plates, thus achieving individual or synchronous unlocking. This completes the automatic control of rotating the valve levers and adjusting the opening of the control valves, thereby automatically regulating the coolant circulation loop. S4. Control the motor to rotate in the forward direction: When it is determined that the real-time heat load of the first / second evaporator is high, the controller issues a command to control the output of the motor to rotate in the forward direction. The motor drives the adjustment shaft to rotate, which causes the drive block to move accordingly. This in turn drives the rack connected to the adjustment plate to move, causing the gear to rotate and drive the valve stem to rotate, thus adjusting the opening of the control valve connected to it. S5. Switching Time Judgment: Determine the switching time t of the first / second evaporator. 第一蒸发器 / t 第二蒸发器 sequentially with the preset time period t 预设时段 Perform a comparison and judgment, if t 第一蒸发器 / t 第二蒸发器 ≥t 预设时段 Then proceed to the next step, if t 第一蒸发器 / t 第二蒸发器 <t 预设时段 If so, return to the continue time determination step; S6. Secondary judgment of evaporator heat load: If the real-time temperature T of the first / second evaporator is... 第一蒸发器 / T 第二蒸 If the temperature of the generator is lower than the preset temperature value Tpreset, proceed to the next step; otherwise, remain silent. S7. Automatic control reset: Control motor to rotate in reverse: When it is determined that the heat load of the first / second evaporator has returned to normal, the controller issues a command to control the motor output to rotate in reverse. The motor drives the adjusting shaft to rotate in reverse, so that the opening of the two control valves is adjusted and reset in reverse.

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