CN114901037B - Immersed liquid cooling device and liquid cooling method thereof - Google Patents
Immersed liquid cooling device and liquid cooling method thereof Download PDFInfo
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- CN114901037B CN114901037B CN202210472307.6A CN202210472307A CN114901037B CN 114901037 B CN114901037 B CN 114901037B CN 202210472307 A CN202210472307 A CN 202210472307A CN 114901037 B CN114901037 B CN 114901037B
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- 239000007788 liquid Substances 0.000 title claims abstract description 468
- 238000001816 cooling Methods 0.000 title claims abstract description 106
- 239000000110 cooling liquid Substances 0.000 claims abstract description 77
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000007654 immersion Methods 0.000 claims description 44
- 239000002826 coolant Substances 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 28
- 238000000034 method Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20763—Liquid cooling without phase change
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to an immersed liquid cooling device and a liquid cooling method thereof, comprising an immersed cabinet, wherein a liquid inlet and a liquid outlet are arranged on the immersed cabinet, and a liquid guide cavity, a cooling cavity and a liquid outlet cavity are sequentially communicated between the liquid inlet and the liquid outlet; the junction of the liquid guide cavity and the cooling cavity is a first interface, a plurality of pressure sensors are arranged at the first interface, at least two temperature sensors are arranged on the side wall of the cooling cavity, and the temperature sensors are all positioned below the liquid level of the cooling liquid in the cooling cavity; the liquid inlet and the liquid outlet are arranged in pairs, at least two pairs of liquid inlets and liquid outlets are arranged, each pair of liquid inlets and liquid outlets are correspondingly connected with a cold liquid distribution unit, the pressure sensor is distributed to the liquid inlet nearby according to the distance from the liquid inlet, and the pressure sensor is in communication connection with the cold liquid distribution unit. By adopting the immersed liquid cooling device and the liquid cooling method thereof, the server can be subjected to targeted heat dissipation, and the accurate control of heat dissipation is realized so as to eliminate local hot spots, thereby optimizing the flow field in the cooling liquid.
Description
Technical Field
The invention relates to the field of servers, in particular to an immersed liquid cooling device and a liquid cooling method thereof.
Background
With the rapid development of China information society, the investment strength of data centers is gradually increased, and the development of the data centers also enters a new stage. Meanwhile, the national energy strategy of 'carbon reaching peak and carbon neutralization' brings new requirements to the energy consumption of the data center, so that a novel data center energy-saving strategy is explored, the energy consumption of the data center is reduced, and the method has important significance to the development of the data center.
The liquid cooling refers to a cooling mode that liquid with high specific heat capacity is used as a working medium for heat transfer to meet the heat dissipation requirements of IT equipment such as a server, and the like.
Disclosure of Invention
In view of the above, it is desirable to provide an immersion liquid cooling apparatus and a liquid cooling method thereof that can improve cooling accuracy.
On one hand, an immersed liquid cooling device is provided, and comprises an immersed cabinet, wherein a liquid inlet and a liquid outlet are formed in the immersed cabinet, and a liquid guide cavity, a cooling cavity and a liquid outlet cavity are sequentially communicated between the liquid inlet and the liquid outlet; the junction of the liquid guide cavity and the cooling cavity is a first interface, a plurality of pressure sensors are arranged at the first interface, at least two temperature sensors are arranged on the side wall of the cooling cavity, and the temperature sensors are all positioned below the liquid level of the cooling liquid in the cooling cavity; the liquid inlets and the liquid outlets are arranged in pairs, at least two pairs of liquid inlets and liquid outlets are arranged, each pair of liquid inlets and liquid outlets are correspondingly connected with a cold liquid distribution unit, a plurality of pressure sensors are distributed to the liquid inlets in a near mode according to the distance from the liquid inlets, and the pressure sensors are all in communication connection with the cold liquid distribution units connected with the corresponding liquid inlets; the distance between the first interface and the bottom surface of the server is sufficient to vary the pressure of the coolant flow at the bottom of the first interface when the server is placed on the submerged cabinet.
In one embodiment, a liquid guide plate is arranged at the bottom of the immersed cabinet, the liquid guide plate divides the inner part of the immersed cabinet into the liquid guide cavity and the cooling cavity, a plurality of first liquid guide ports are arranged on the liquid guide plate, and the liquid guide cavity is communicated with the cooling cavity through the first liquid guide ports.
In one embodiment, the pressure sensors and the first liquid guiding ports are arranged in a rectangular array on the liquid guiding plate, the pressure sensors and the first liquid guiding ports are grouped in rows, and the width of one server at least covers one row of the pressure sensors and one row of the first liquid guiding ports.
In one embodiment, each liquid inlet and each liquid guide cavity are provided with a liquid inlet, each liquid inlet is communicated with each liquid inlet, a plurality of second liquid guide openings are formed at the junctions of the liquid inlet and each liquid guide cavity, and each liquid inlet and each liquid guide cavity are communicated through each second liquid guide opening.
In one embodiment, the liquid outlet cavity is arranged on the side surface of the immersed cabinet, an opening is formed in the top of the liquid outlet cavity, the liquid outlet cavity is communicated with the cooling cavity through the opening, and the height of the opening is lower than that of the immersed cabinet.
In one embodiment, the refrigerator further comprises a refrigerator body, and the immersed cabinet, the cold liquid distribution unit and the pipeline between the immersed cabinet and the cold liquid distribution unit are integrally connected to the refrigerator body.
In another aspect, a liquid cooling method is provided, the method comprising:
acquiring a pressure average value of a group of pressure sensors, and calculating a pressure difference value between a preset pressure value and the pressure average value;
when the pressure difference value is larger than or equal to a first pressure threshold value, determining a cold liquid distribution unit corresponding to the group of pressure sensors, and executing a power increase instruction of the cold liquid distribution unit;
waiting for preset time, acquiring a temperature average value of a temperature sensor, and calculating a temperature difference value between the preset temperature value and the temperature average value;
judging whether the temperature difference value is smaller than a first temperature threshold value or not; if the temperature difference is smaller than the first temperature threshold, traversing the next set of pressure sensors; and if the temperature difference value is greater than or equal to the first temperature threshold value, continuing to execute the power increasing instruction of the cold liquid distribution unit.
In one embodiment, if the temperature difference is greater than or equal to the first temperature threshold, the power increasing instruction of the cold liquid distribution unit is further executed, and specifically includes:
If the temperature difference value is greater than or equal to the first temperature threshold value, judging whether the power of the cold liquid distribution unit corresponding to the group of pressure sensors reaches a power threshold value or not;
if the power of the cold liquid distribution unit corresponding to the group of pressure sensors reaches a power threshold value, triggering an alarm signal;
if the power of the cold liquid distribution unit corresponding to the group of pressure sensors does not reach the power threshold, continuing to execute the power increasing instruction of the cold liquid distribution unit, returning to wait for preset time, acquiring the temperature average value of the temperature sensors, and continuing to execute.
In one embodiment, the liquid cooling method further comprises:
when the pressure difference value is smaller than a first pressure threshold value, judging whether a cold liquid distribution unit corresponding to the group of pressure sensors receives an overpower increase instruction or not;
if the cold liquid distribution unit corresponding to the group of pressure sensors receives the overpower increasing instruction, the power is kept unchanged, and the next group of pressure sensors is traversed;
and if the cold liquid distribution unit close to the group of pressure sensors does not receive the power increasing instruction, executing the power decreasing instruction of the cold liquid distribution unit.
In one embodiment, after executing the power reduction instruction of the cold liquid distribution unit, the method further includes:
Waiting for preset time, acquiring a temperature average value of a temperature sensor, and calculating a temperature difference value between the preset temperature value and the temperature average value;
judging whether the temperature difference is smaller than a first temperature threshold value, if so, traversing the next group of pressure sensors; and if the temperature difference value is greater than or equal to the first temperature threshold value, calculating the pressure average value of all the pressure sensors and the temperature average value of all the temperature sensors.
Judging whether the pressure average value of all the pressure sensors is larger than or equal to a second pressure threshold value or whether the temperature average value of all the temperature sensors is larger than or equal to a second temperature threshold value;
if the pressure average value of all the pressure sensors is larger than or equal to a second pressure threshold value or the temperature average value of all the temperature sensors is larger than or equal to a second temperature threshold value, triggering an alarm signal;
if the pressure average value of all the pressure sensors is smaller than the second pressure threshold value and the temperature average value of all the temperature sensors is smaller than the second temperature threshold value, traversing the next group of pressure sensors.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. through the cooperation of pressure sensor and temperature sensor, can the inside coolant liquid's of real-time perception submergence cabinet state parameter, including pressure parameter and temperature parameter, can obtain the state of coolant liquid flow field according to these state parameters, including pressure state and temperature state, then according to pressure state and temperature state regulation cold liquid distribution unit's power, can carry out the heat dissipation of pertinence to the server, realized radiating accurate control, with eliminate local hot spot, thereby optimize the inside flow field of coolant liquid, realized the radiating capacity of automatic regulation submergence cabinet, improved radiating efficiency, still realized the rational utilization of heat dissipation resource, the cost of dispelling the heat has been reduced.
2. The immersed cabinet, the cold liquid distribution unit, the pipeline between the immersed cabinet and the cold liquid distribution unit are integrally connected to the box body, the structure is simple, the complexity of the system is reduced, and the stability of the system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an immersion liquid cooling apparatus according to the present invention;
FIG. 2 is a block diagram of an immersion tank of the immersion liquid cooling apparatus of the present invention;
FIG. 3 is a schematic view of a partial enlarged structure at A in FIG. 2;
FIG. 4 is a schematic view of a liquid guide plate of an immersion liquid cooling apparatus according to the present invention;
FIG. 5 is a cross-sectional view of an immersion liquid cooling apparatus of the present invention and a schematic view of coolant flow;
FIG. 6 is a block diagram of an immersion liquid cooling apparatus of the present invention;
FIG. 7 is a first process flow diagram of the liquid cooling process of the present invention;
FIG. 8 is a second process flow diagram of the liquid cooling process of the present invention.
Description of the specification reference numerals:
1. immersing the cabinet; 2. a liquid inlet; 3. a liquid outlet; 4. a liquid guiding cavity; 5. a cooling chamber; 6. a liquid outlet cavity; 7. a pressure sensor; 8. a temperature sensor; 9. a cold liquid distribution unit; 10. a liquid guide plate; 11. a first liquid guide port; 12. a liquid inlet cavity; 13. a second liquid guide port; 14. an opening; 15. a case; 16. hanging lugs; 17. a limit clamping groove; 18. a primary side inlet; 19. a primary side liquid outlet; 20. a secondary side liquid inlet; 21. and a secondary side liquid outlet.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In order to improve the heat dissipation effect of the server, the current popular mode is to submerge the server in a specially designed box body, then to lead out cooling liquid through a pipeline, and to exchange heat through a CDU, and the heat exchange mode has a good application prospect for a liquid cooling data center, but the refrigeration accuracy of the submerged liquid cooling technology in the prior art is not high. In order to improve the heat dissipation efficiency of a liquid cooling technology, the application provides an immersed liquid cooling device and a liquid cooling method thereof, wherein state parameters of the whole flow field can be acquired through a pressure sensor and a temperature sensor, and a server needing heat dissipation can be effectively identified according to the state parameters; then, carrying out targeted power regulation and control on a cold liquid distribution unit corresponding to the server needing heat dissipation; not only can improve the heat dissipation precision, but also can improve the heat dissipation efficiency, improve the utilization ratio of heat dissipation resources, reduce cooling cost.
Example 1
An immersion liquid cooling apparatus is provided, as shown with reference to fig. 1 to 6.
The specific working principle is as follows: when the pressure values collected by some pressure sensors 7 are abnormal and the pressure average value exceeds the first pressure threshold value, which indicates that a server is placed above the pressure sensors 7, the flow rate of the cooling liquid at the server needs to be increased to improve the heat dissipation capacity, so that the liquid inlet 1 corresponding to the pressure sensors 7 is determined, then the abnormal signals of the pressure sensors 7 are transmitted to the cold liquid distribution unit 9 corresponding to the liquid inlet 1, the cold liquid distribution unit 9 receives the abnormal signals of the pressure sensors 7 and then executes a power increase instruction, the cooling liquid flow rate of the liquid inlet is increased to improve the heat dissipation capacity of the server, after the power of the cold liquid distribution unit 9 is increased for a period of time, the temperature sensor 8 collects the temperature data of the cooling liquid, whether the temperature of the server is normal or not is judged according to the temperature data, if so, the power of the cold liquid distribution unit 9 is continuously increased until the temperature data collected by the temperature sensor 8 is normal.
The immersed liquid cooling device comprises an immersed cabinet 1, wherein a liquid inlet 2 and a liquid outlet 3 are formed in the immersed cabinet 1, and a liquid guide cavity 4, a cooling cavity 5 and a liquid outlet cavity 6 are sequentially communicated between the liquid inlet 2 and the liquid outlet 3; the junction of the liquid guide cavity 4 and the cooling cavity 5 is a first interface, a plurality of pressure sensors 7 are arranged at the first interface, at least two temperature sensors 8 are arranged on the side wall of the cooling cavity 5, and the temperature sensors 8 are all positioned below the liquid level of the cooling liquid in the cooling cavity 5; the liquid inlets 2 and the liquid outlets 3 are arranged in pairs, at least two pairs are arranged, each pair of liquid inlets 2 and liquid outlets 3 is correspondingly connected with one cold liquid distribution unit 9, a plurality of pressure sensors 7 are distributed to the liquid inlets 2 nearby according to the distance from the liquid inlets 2, and the pressure sensors 7 are all in communication connection with the cold liquid distribution units 9 connected with the corresponding liquid inlets 2; the distance between the first interface and the bottom surface of the server is sufficient to change the pressure of the coolant flow at the bottom of the first interface when the server is placed on the submerged cabinet 1.
The main working principle of the immersion type liquid cooling device is that a server is directly immersed in cooling liquid, the cooling liquid flows to dissipate heat of the server, cooling heat exchanges heat with the server, and heat released by the server is taken away. The cooling liquid and the server exchange heat to become hot liquid, and the cold liquid distribution unit 9 is responsible for cooling the hot liquid after heat exchange again to become cooling liquid and providing power for the cooling liquid to flow in the immersed cabinet 1.
As shown in fig. 6, the cold liquid dispensing unit 9 includes a primary side liquid inlet 18, a primary side liquid outlet 19, a secondary side liquid inlet 20, and a secondary side liquid outlet 21. The primary side is the side where external cooling liquid exchanges with the cold liquid distribution unit 9, the external cooling liquid enters the cooling liquid distribution unit through a primary side liquid inlet 18, then heat exchange is carried out on the primary side and the secondary side of the cold liquid distribution unit 9, after the heat exchange, the external cooling liquid flows out through a primary side liquid outlet 19, and the cooling liquid flowing out through the primary side liquid outlet 19 is changed into hot liquid; the secondary side liquid inlet 20 is communicated with the liquid outlet 3 on the immersion cabinet 1, the secondary side liquid outlet 21 is communicated with the liquid inlet 2 on the immersion cabinet 1, after the cooling liquid in the immersion cabinet 1 exchanges heat with the server, the cooling liquid is changed into hot liquid, the hot liquid flows into the cold liquid distribution unit 9 through the liquid outlet 3 and the secondary side liquid inlet 20, after the hot liquid exchanges heat in the cold liquid distribution unit 9, the hot liquid is changed into cooling liquid, and then the cooling liquid enters the immersion cabinet 1 through the liquid inlet 2 and the secondary side liquid outlet 21, so that the circulating cooling of the cooling liquid is realized. After entering the immersed cabinet 1 through the liquid inlet 2, the cooling liquid passes through the liquid guide cavity 4, then enters the cooling cavity 5 from the liquid guide cavity 4, and finally enters the liquid outlet cavity 6 after heat exchange is carried out between the cooling liquid and the server in the cooling cavity 5, and returns to the cold liquid distribution unit 9 through the liquid outlet 3.
As shown in fig. 1, the shape of the immersion cabinet 1 may be set according to the actual application scenario, such as a cylindrical shape, a cuboid shape, a square shape, and the like, and preferably, the shape of the immersion cabinet 1 adopts a cuboid shape, because the shape of a general server is a cuboid shape, the server is easy to be placed in the cuboid-shaped immersion cabinet 1, space is saved, and space utilization is improved.
The flow direction of the cooling liquid can be the flow along the immersing cabinet 1 from bottom to top, from top to bottom, from left to right, or other combination directions, preferably, the flow direction of the cooling liquid adopts the flow direction from bottom to top, the heat dissipation efficiency of the flow direction is higher, the temperature sensor 8 and the pressure sensor 7 are easy to arrange, the structure is simpler, and the following embodiments are all described by adopting the flow direction. According to the flow direction from bottom to top, the liquid inlet 2 is arranged at the bottom of the immersed cabinet 1, the cooling cavity 5 is positioned above the liquid guide cavity 4, cooling liquid enters the liquid guide cavity 4 from the liquid inlet 2 and flows upwards in sequence to reach the cooling cavity 5, and finally the cooling liquid enters the liquid outlet cavity 6 through the top of the cooling cavity 5 and then enters the cold liquid distribution unit 9 through the liquid outlet 3, as shown in fig. 5.
The junction of the liquid guide cavity 4 and the cooling cavity 5 is a first interface, a plurality of pressure sensors 7 are arranged at the first interface, when the server is placed in the immersed cabinet 1, the bottom surface of the server is close to the first interface, the pressure of cooling liquid entering the cooling cavity 5 from the liquid guide cavity 4 through the first liquid guide port 11 can be changed, therefore, the plurality of pressure sensors 7 are arranged at the first interface, if the pressure collected by the pressure sensors 7 at a certain place of the first interface suddenly increases and exceeds a first pressure threshold value, the server is arranged at the place, and therefore, the situation that whether the server exists near the pressure sensors 7 can be judged through the state parameters collected by the pressure sensors 7, so that the power of a cooling liquid distribution unit 9 corresponding to the pressure sensors 7 is increased for the server, the heat dissipation can be conducted in a targeted mode, the heat dissipation efficiency is improved, and the cost can be reduced, and only the power of the cooling liquid distribution unit 9 corresponding to the pressure sensors 7 is required to be increased.
The side wall of the cooling cavity 5 is provided with a temperature sensor 8, temperature data of cooling liquid can be acquired through the temperature sensor 8, the temperature state of a flow field is obtained according to the temperature parameter, if the temperature of the cooling liquid is too high, the temperature of the server is too high, namely the heat exchange capacity of the server and the cooling liquid is poor, the heat dissipation capacity needs to be enhanced, the power of the cooling liquid distribution unit 9 is improved, the flow rate of the cooling liquid is improved, and the heat exchange capacity of the server and the cooling liquid is further improved; if the temperature of the cooling liquid is in a normal state, it is indicated that the temperature of the server is normal, and the power of the cooling liquid distribution unit 9 does not need to be increased. In order for the temperature sensor 8 to be able to effectively measure the temperature of the cooling liquid, the temperature sensor 8 is placed below the liquid level of the cooling liquid, typically on the inner wall of the cooling chamber 5 near the opening 14, as shown in fig. 3.
The liquid inlet 2 and the liquid outlet 3 are arranged in pairs, one pair of liquid inlet 2 and liquid outlet 3 correspond to one cold liquid distribution unit 9, the number of the cold liquid distribution units 9 is set according to actual heat dissipation conditions, preferably, two cold liquid distribution units 9 are arranged, two pairs of liquid inlet 2 and liquid outlet 3 are correspondingly arranged, and each pair of liquid inlet 2 and liquid outlet 3 are connected with one cold liquid distribution unit 9. The pair of liquid inlets 2 and the liquid outlet 3 correspond to one cold liquid distribution unit 9, so if the pressure sensor 7 detects that the average pressure exceeds the first pressure threshold value, and then the temperature value is judged to increase the flow rate of the cooling liquid of the liquid inlet 2 corresponding to the pressure sensor 7, the power of the cold liquid distribution unit 9 connected with the liquid inlet 2 needs to be increased, and the heat exchange capacity of the server and the cooling liquid can be improved.
Preferably, the pressure sensors 7 are grouped according to the number of servers that can be accommodated by the immersion cabinet 1, for example, the immersion cabinet 1 can accommodate at most 4 immersion cabinets 1, then the pressure sensors 7 can be divided into 1-4 groups, further, the pressure sensors 7 are grouped according to the maximum number of servers that can be accommodated by the immersion cabinet 1, for example, the immersion cabinet 1 can accommodate at most 4 immersion cabinets 1, then the pressure sensors 7 are divided into 4 groups, so that one group of pressure sensors 7 corresponds to one server, a targeted heat dissipation mode can be effectively adopted, local hot spots are eliminated, and reasonable utilization of resources can be achieved on the premise of improving heat dissipation capacity, and cost is reduced. Further, when the server is placed in the middle of the immersion cabinet 1, the pressure sensor 7 below the server is also positioned in the middle, so that the group of pressure sensors 7 are equidistant from the two liquid inlets 1 and are farther away, the group of pressure sensors 7 can be selectively distributed to the two liquid inlets 1 at the same time, and then the cold liquid distribution units 9 connected with the two liquid inlets 1 can radiate heat from the middle server; alternatively, the maximum number of servers that each submerged cabinet 1 can accommodate is set even, so the pressure sensors 7 are also even, facilitating the placement of groupings of pressure sensors 7 for two inlets 1.
The pressure sensor 7 is allocated to the liquid inlet 2 in the vicinity of the distance from the liquid inlet 2, and the pressure sensor 7 is connected in communication with the cold liquid distribution unit 9. For example, the immersion cabinet 1 is provided with two liquid inlets 2, an A liquid inlet and a B liquid inlet, four groups of pressure sensors 7, wherein the first group of pressure sensors and the second group of pressure sensors 7 are close to the A liquid inlet, the third group of pressure sensors and the fourth group of pressure sensors 7 are close to the B liquid inlet, the first group of pressure sensors and the second group of pressure sensors 7 are corresponding to cold liquid distribution units 9 corresponding to the A liquid inlet, and the third group of pressure sensors and the fourth group of pressure sensors 7 are corresponding to the cold liquid distribution units 9 corresponding to the B liquid inlet. If the pressure average value of the pressure sensor 7 of a certain group is abnormal and exceeds the first pressure threshold value, it is indicated that the flow rate of the cooling liquid needs to be enhanced at the position of the pressure sensor of the group, the signal of the pressure sensor 7 of the group is transmitted to the cooling liquid distribution unit 9 connected with the liquid inlet 2 corresponding to the pressure sensor 7 of the group, and the cooling liquid distribution unit 9 executes a power increasing instruction to increase the flow rate of the cooling liquid of the liquid inlet 2 closest to the position, so that the power of the cooling liquid distribution unit 9 connected with the liquid inlet 2 needs to be increased to improve the heat exchange capacity of the server and the cooling liquid, thereby realizing targeted heat dissipation and eliminating local hot spots.
If a certain group of pressure sensors 7 is larger than or equal to the first pressure threshold, the server is placed at the position, and the server blocks the cooling liquid passing through the first liquid guide port 11 below the server, after the server is placed on the immersed cabinet 1, the bottom surface of the server is close to the top surface of the liquid guide plate 10, and the distance between the bottom surface of the server and the top surface of the liquid guide plate 10 is enough to change the pressure of the cooling liquid flowing below the liquid guide plate 10, so that the cooling liquid flowing to the bottom surface of the server can generate resistance under the blocking of the bottom surface of the server, and the situation that the pressure value acquired by the pressure sensors 7 below the server is larger than the first pressure threshold can occur, and at the moment, the flow is increased from the nearest liquid inlet 2 to the group of pressure sensors 7, namely the power of the cooling liquid distribution unit 9 corresponding to the liquid inlet 2 is improved, the targeted heat dissipation can be performed aiming at the server, the local hot spots are eliminated, and the heat dissipation efficiency is improved.
In addition, be provided with the hangers 16 that are used for carrying the server on the inner wall of submergence cabinet 1, the hangers 16 department on submergence cabinet 1 is carried on the both sides at server top, and the server both sides are provided with spacing draw-in groove 17, play the spacing effect to the server, prevent that the server from producing the removal when carrying out the heat exchange with the coolant liquid that flows, preferably, spacing draw-in groove 17 sets up two rows from top to bottom in submergence cabinet 1's inside, the spacing draw-in groove 17 of two rows aligns in same vertical plane from top to bottom, i.e. same server is spacing in two spacing draw-in grooves 17 from top to bottom.
In one embodiment, a liquid guide plate 10 is disposed at the bottom of the immersion cabinet 1, the liquid guide plate 10 divides the interior of the immersion cabinet 1 into the liquid guide cavity 4 and the cooling cavity 5, a plurality of first liquid guide openings 11 are disposed on the liquid guide plate 10, and the liquid guide cavity 4 and the cooling cavity 5 are communicated through the first liquid guide openings 11.
The bottom of the immersed cabinet 1 is provided with the liquid guide plate 10, the inner part of the immersed cabinet 1 is divided into the liquid guide cavity 4 and the cooling cavity 5 by the liquid guide plate 10, namely, the position of the liquid guide plate 10 is the first interface, cooling liquid is subjected to transition reversing through the liquid guide cavity 4, then flows upwards to the cooling cavity 5 through the first liquid guide opening 11 on the liquid guide plate 10, cooling liquid in the liquid guide cavity 4 is split by the first liquid guide opening 11 on the liquid guide plate 10, and uniformly flows upwards, so that the flow rate of cooling liquid in the same horizontal plane is uniform, the flow pressure of the cooling liquid in the same horizontal plane is also uniform, and the accuracy of the pressure value acquired by the pressure sensor 7 is improved. The axis direction of the first liquid guiding port 11 is vertically upwards, the cooling liquid is upwards guided, and the shape of the first liquid guiding port 11 is cylindrical, so that the flow of the cooling liquid is facilitated, and the hydrodynamic characteristics are met.
In one embodiment, the pressure sensors 7 and the first liquid guiding ports 11 are arranged in a rectangular array on the liquid guiding plate 10, the pressure sensors 7 and the first liquid guiding ports 11 are grouped in rows, and the width of one server at least covers one row of the pressure sensors 7 and one row of the first liquid guiding ports 11.
The pressure sensor 7 is arranged on the liquid guide plate 10, the liquid guide plate 10 is positioned at the junction of the liquid guide cavity 4 and the cooling cavity 5, namely at the first interface, so that the pressure sensor 7 is positioned at the first interface, the flowing speed and the flowing pressure of the cooling liquid at the junction are relatively high, the data accuracy of the pressure sensor 7 can be improved, and the pressure sensor 7 is arranged on the bottom surface of the liquid guide plate 10, so that the pressure sensor 7 can collect pressure data conveniently.
The pressure sensor 7 and the first liquid guiding port 11 are all arranged in a rectangular array, as shown in fig. 4, the distance between two adjacent broken lines on the liquid guiding plate 10 is not smaller than the width of the server, so long as the width of the server can be ensured to be located between the two adjacent broken lines. The width of the server at least covers one row of pressure sensors 7 and one row of first liquid guide openings 11, preferably, the width of the server covers one row of pressure sensors 7 and three rows of first liquid guide openings 11, and the server is determined according to practical situations, and the server comprises the number, the diameter and other considerations of the first liquid guide openings 11. If the bottom surface of the server does not cover the first liquid guiding port 11 when the server is placed on the submerged cabinet 1, the pressure change is not large when the server is placed on the submerged cabinet 1 and when the server is not placed on the submerged cabinet 1, so that it is inconvenient to detect whether the server exists.
As shown in fig. 4, 2 cold liquid distribution units 9 are provided, namely an a cold liquid distribution unit and a B cold liquid distribution unit, wherein the a cold liquid distribution unit corresponds to an a liquid inlet and an a liquid outlet, the B cold liquid distribution unit corresponds to a B liquid inlet and a B liquid outlet, all pressure sensors 7 are divided into four groups, each group is divided into one group, a group of pressure sensors 7 and three rows of first liquid guide openings 11 are arranged between two adjacent broken lines, namely, within the width of one server, the pressure sensors 7 of the first group and the second group are closer to the a cold liquid distribution unit, the pressure sensors 7 of the third group and the fourth group are closer to the B cold liquid distribution unit, so that when the server is placed on the immersed cabinet 1, when the bottom surface of the server is located right above the first liquid guide port 11 of the first group, because the bottom surface of the server is close to the top surface of the liquid guide plate 10, the distance between the bottom surface of the server and the top surface of the liquid guide plate 10 is enough to change the flowing pressure of the cooling liquid below the liquid guide plate 10, the pressure value of the first group of pressure sensors 7 is increased and is larger than the first pressure threshold value, then the closest liquid inlet A to the first group of pressure sensors 7 corresponds to the liquid inlet A, and the liquid inlet A corresponds to the liquid cooling distribution unit A, so that the power of the liquid cooling distribution unit A can be increased, the flow rate of the cooling liquid of the liquid inlet A is improved, the server is cooled in a targeted way, local hot spots are eliminated, the cooling efficiency is improved, and the cooling cost is reduced.
In one embodiment, a liquid inlet cavity 12 is disposed between each liquid inlet 2 and each liquid guiding cavity 4, the liquid inlet cavity 12 is communicated with the liquid inlet cavity 2, a plurality of second liquid guiding openings 13 are disposed at the junctions of the liquid inlet cavities 12 and the liquid guiding cavities 4, and the liquid inlet cavities 12 are communicated with the liquid guiding cavities 4 through the second liquid guiding openings 13.
If the liquid inlet 2 is directly connected with the liquid guide cavity 4, the uneven flowing pressure of the cooling liquid in the liquid guide cavity 4 is easily caused, and the pressure acquisition result of the pressure sensor 7 can be influenced, so that the liquid inlet cavity 12 is further arranged between the liquid guide cavity 4 and the liquid inlet 2, the cooling liquid with higher flow rate firstly enters the liquid inlet cavity 12 through the liquid inlet 2, after being buffered in the liquid inlet cavity 12, enters the liquid guide cavity 4 through a plurality of second liquid guide openings 13 at the junction of the liquid inlet cavity 12 and the liquid guide cavity 4, the second liquid guide openings 13 are also arranged into a cylinder shape, and the axis of the second liquid guide openings 13 is perpendicular to the interface between the liquid inlet cavity 12 and the liquid guide cavity 4, so that the cooling liquid flows into the liquid guide cavity 4 more uniformly. In addition, the liquid inlets 2 to which the two cold liquid distribution units 9 are connected are respectively arranged at the bottoms of the two opposite sides of the immersed cabinet 1. When the server is placed in the immersed cabinet 1, the length direction of the server is perpendicular to the axis of the second liquid guide opening 13, the flowing direction of the cooling liquid flowing into the liquid guide cavity 4 through the liquid inlet cavity 12 is along the axis direction of the second liquid guide opening 13, the cooling liquid on two sides is converged and then upwards enters the cooling cavity 5 through the first liquid guide opening 11, and when the server is placed in the immersed cabinet 1 in the direction perpendicular to the direction of the second liquid guide opening 13, the pressure value of the pressure sensor 7 is easier to judge the liquid inlet 2 and the cooling liquid distribution unit 9 corresponding to the server at the moment.
In one embodiment, the liquid outlet cavity 6 is disposed on a side surface of the immersion cabinet 1, an opening 14 is disposed at a top of the liquid outlet cavity 6, the liquid outlet cavity 6 is communicated with the cooling cavity 5 through the opening 14, and a height of the opening 14 is lower than a height of the immersion cabinet 1.
The liquid outlet chamber 6 is used for conveying the cooling liquid subjected to heat exchange with the server to the cooling liquid distribution unit 9. Since the flow direction of the cooling liquid is from bottom to top, an opening 14 is provided at the top of the liquid outlet chamber 6, and the cooling liquid in the cooling chamber 5 flows into the liquid outlet chamber 6 through this opening 14. The height of the opening 14 is lower than the height of the submerged cabinet 1, so that when the cooling liquid in the cooling chamber 5 flows upwards to the opening 14, the cooling liquid does not flow out of the submerged cabinet 1, but directly flows into the liquid outlet chamber 6 through the opening 14, and then returns to the cold liquid distribution unit 9 through the liquid outlet 3.
In one embodiment, the cooling device further comprises a box body 15, wherein the immersed cabinet 1, the cold liquid distribution unit 9 and pipelines between the immersed cabinet 1 and the cold liquid distribution unit 9 are integrally connected to the box body 15
The submerged cabinet 1 and the cold liquid distribution unit 9 are mounted in a movable tank 15, the tank 15 being movable according to the specific circumstances. The immersed cabinet, the cold liquid distribution unit, the immersed cabinet 1 and the cold liquid distribution unit 9 are integrally connected to the box body through pipelines, the structure is simple, the complexity of the system is reduced, and the stability of the system is improved.
Example two
A liquid cooling method using an immersion liquid cooling apparatus is provided, as shown in FIGS. 7 to 8.
The liquid cooling method comprises the following steps:
acquiring a pressure average value of a group of pressure sensors 7, and calculating a pressure difference value between a preset pressure value and the pressure average value;
when the pressure difference value is greater than or equal to a first pressure threshold value, determining a cold liquid distribution unit 9 corresponding to the group of pressure sensors 7, and executing a power increase instruction of the cold liquid distribution unit 9;
waiting for preset time, acquiring a temperature average value of the temperature sensor 8, and calculating a temperature difference value between the preset temperature value and the temperature average value;
judging whether the temperature difference value is smaller than a first temperature threshold value or not; if the temperature difference is less than the first temperature threshold, traversing the next set of pressure sensors 7; and if the temperature difference is greater than or equal to the first temperature threshold, continuing to execute the power increasing instruction of the cold liquid distribution unit 9.
In the liquid cooling method using the immersion liquid cooling apparatus, the pressure sensors 7 are grouped according to the number of servers that can be accommodated in the immersion cabinet 1, preferably, the pressure sensors 7 are grouped according to the maximum number of servers that can be accommodated in the immersion cabinet 1, and as shown in fig. 4, the immersion cabinet 1 can accommodate at most four servers, and thus is divided into four groups of pressure sensors 7. The liquid cooling method comprises the following steps: the pressure values of the four sets of pressure sensors 7 are acquired sequentially. Firstly, acquiring a pressure average value of a first group of pressure sensors 7, namely, averaging the pressure values acquired by the first group of pressure sensors 7, and then, carrying out difference between the pressure average value and a preset pressure value to obtain a pressure difference value; and then comparing the pressure difference with a first pressure threshold value, when the pressure difference is greater than or equal to the first pressure threshold value, the server is arranged above the group of pressure sensors 7, so that the cold liquid distribution units 9 corresponding to the group of pressure sensors 7 need to be determined, then a power increasing instruction is issued to the cold liquid distribution units 9 corresponding to the group of pressure sensors 7, and the power of the cold liquid distribution units 9 is increased so as to improve the heat dissipation capacity of the server. Waiting for a preset time, wherein after the cold liquid distribution unit 9 executes the power increasing instruction, the server does not fully dissipate heat immediately, and the cooling liquid is required to circulate for a period of time to fully dissipate heat of the server, so that after waiting for the preset time, the temperature average value of the temperature sensor 8 is obtained, the temperature difference between the preset temperature value and the temperature average value is calculated, and whether the power of the cold liquid distribution unit 9 needs to be increased is judged according to the temperature difference; if the temperature difference is smaller than the first temperature threshold, the server is described to obtain sufficient heat dissipation, the next group of pressure sensors 7 are traversed, and the pressure values of the next group of pressure sensors 7 are acquired so as to judge whether the server is placed above the next group of pressure sensors 7; if the temperature difference is equal to or greater than the first temperature threshold, it is indicated that the power of the cold liquid distribution unit 9 is still insufficient at this time, and the server is not sufficiently cooled, so that it is necessary to continue executing the power increase instruction of the cold liquid distribution unit 9, and further improve the cooling capacity of the server. When the power of the cold liquid distribution unit 9 is increased, the power increase amplitude after each power increase instruction is received may be set, or the power increase amplitude may be determined according to the magnitude of the temperature difference, and the larger the temperature difference is, the larger the power increase amplitude is.
In one embodiment, if the temperature difference is greater than or equal to the first temperature threshold, the power increasing instruction of the cold liquid distribution unit 9 is further executed, which specifically includes:
if the temperature difference value is greater than or equal to the first temperature threshold value, judging whether the power of the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 reaches a power threshold value or not;
triggering an alarm signal if the power of the cold liquid distribution unit 9 corresponding to the set of pressure sensors 7 reaches a power threshold;
if the power of the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 does not reach the power threshold, the power increasing instruction of the cold liquid distribution unit 9 is continuously executed, then the waiting preset time is returned, the temperature average value of the temperature sensor 8 is obtained, and the execution is continuously executed.
When the temperature difference is greater than or equal to the first temperature threshold, it is indicated that the power increasing instruction of the cold liquid distribution unit 9 needs to be continuously executed, so as to further improve the cooling capacity of the server, but if the cold liquid distribution unit 9 has a rated power value, the cooling capacity of the server cannot be further improved, so that it is necessary to further determine whether the power of the cold liquid distribution unit 9 corresponding to the set of pressure sensors 7 has reached the power threshold, that is, the rated power value of the cold liquid distribution unit 9; if the power of the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 reaches the power threshold, the power of the cold liquid distribution unit 9 at the moment cannot meet the cooling requirement of the server, the power consumption of the server at the moment is too large, the heat dissipation is too much, an alarm signal is required to be sent at the moment, and operation and maintenance personnel are prompted to reduce the number of the servers and reduce the power consumption; if the power of the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 does not reach the power threshold, the power of the cold liquid distribution unit 9 can be continuously increased, the power increasing instruction of the cold liquid distribution unit 9 is continuously executed, the step of waiting for the preset time and obtaining the temperature average value of the temperature sensor 8 is returned, the execution is continuously executed until the cooling requirement of the server is met, or the power of the cold liquid distribution unit 9 reaches the power threshold, and an alarm signal is triggered.
In one embodiment, the liquid cooling method further comprises:
when the pressure difference value is smaller than a first pressure threshold value, judging whether the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 receives an overpower increase instruction or not;
if the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 receives an overpower increasing instruction, the power is kept unchanged, and the next group of pressure sensors 7 is traversed;
if the cold liquid distribution unit 9 close to the set of pressure sensors 7 does not receive the power increase instruction, the power decrease instruction of the cold liquid distribution unit 9 is executed.
Comparing the pressure difference with a first pressure threshold, and when the pressure difference is smaller than the first pressure threshold, further judging whether the cold liquid distribution units 9 corresponding to the group of pressure sensors 7 accept the over-power increasing instruction or not; if the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 receives an overpower increasing instruction, maintaining the power of the cold liquid distribution unit 9 unchanged, and traversing the next group of pressure sensors 7; if the cold liquid distribution unit 9 close to the set of pressure sensors 7 does not receive the power increasing instruction, it is indicated that there is no server, and the power decreasing instruction of the cold liquid distribution unit 9 needs to be executed to reduce the power of the cold liquid distribution unit 9. When the power of the cold liquid distribution unit 9 is reduced, the power reduction amplitude after each time of receiving the power reduction instruction can be set, or the power reduction amplitude is determined according to the magnitude of the temperature difference, and the larger the temperature difference is, the larger the power reduction amplitude is. For example, as shown in fig. 4, one cold liquid distribution unit 9 corresponds to two sets of pressure sensors, if a server is placed above a first set of pressure sensors and no server is placed above a second set of pressure sensors, then the pressure average value of the second set of pressure sensors is normal, then the cold liquid distribution units corresponding to the first set of pressure sensors and the second set of pressure sensors cannot be reduced at this time, because the cold liquid distribution unit still needs to dissipate heat to the servers above the first set of pressure sensors, so that it is needed to determine whether the cold liquid distribution unit 9 corresponding to the set of pressure sensors 7 receives an overpower increasing instruction.
In one embodiment, after executing the power reduction instruction of the cold liquid distribution unit 9, the method further includes:
waiting for preset time, acquiring a temperature average value of the temperature sensor 8, and calculating a temperature difference value between the preset temperature value and the temperature average value;
judging whether the temperature difference is smaller than a first temperature threshold value, and if so, traversing the next group of pressure sensors 7; if the temperature difference is greater than or equal to the first temperature threshold, calculating the pressure average value of all the pressure sensors 7 and the temperature average value of all the temperature sensors 8.
After executing the power reduction instruction of the cold liquid distribution unit 9, waiting for preset time as well, then acquiring a temperature average value of the temperature sensor 8, calculating a temperature difference value between the preset temperature value and the temperature average value, judging whether the temperature difference value is smaller than a first temperature threshold value, if the temperature difference value is smaller than the first temperature threshold value, indicating that a server is not arranged, and if the temperature difference value is normal, traversing the next group of pressure sensors 7, and acquiring pressure values of the next group of pressure sensors 7 to judge whether a server is arranged above the next group of pressure sensors 7; if the temperature difference is greater than or equal to the first temperature threshold, it indicates that the temperature is abnormal in the case that there is no server above the set of pressure sensors 7, and it is necessary to calculate the pressure average value of all the pressure sensors 7 and the temperature average value of all the temperature sensors 8.
In one embodiment, after calculating the average value of the pressures of all the pressure sensors 7 and the average value of the temperatures of all the temperature sensors 8, the method further includes:
judging whether the average value of the pressures of all the pressure sensors 7 is more than or equal to a second pressure threshold value or whether the average value of the temperatures of all the temperature sensors 8 is more than or equal to a second temperature threshold value;
if the average value of the pressures of all the pressure sensors 7 is larger than or equal to a second pressure threshold value or the average value of the temperatures of all the temperature sensors 8 is larger than or equal to a second temperature threshold value, triggering an alarm signal;
if the pressure mean value of all pressure sensors 7 is smaller than the second pressure threshold value and the temperature mean value of all temperature sensors 8 is smaller than the second temperature threshold value, the next set of pressure sensors 7 is traversed.
After calculating the pressure average value of all the pressure sensors 7 and the temperature average value of all the temperature sensors 8, judging whether the pressure average value of all the pressure sensors 7 is larger than or equal to a second pressure threshold value or the temperature average value of all the temperature sensors 8 is larger than or equal to a second temperature threshold value; if the average pressure value of all the pressure sensors 7 is greater than or equal to the second pressure threshold value or the average temperature value of all the temperature sensors 8 is greater than or equal to the second temperature threshold value, the condition that the immersed cabinet 1 is abnormal, such as blockage of the liquid outlet 3 of the immersed cabinet 1, needs to trigger an alarm signal to inform operation and maintenance personnel of maintenance; if the pressure average value of all the pressure sensors 7 is smaller than the second pressure threshold value and the temperature average value of all the temperature sensors 8 is smaller than the second temperature threshold value, the temperature is not abnormal, and the next group of pressure sensors 7 is traversed.
Each group of pressure sensors 7 is traversed and collected in sequence to judge whether a server is placed above the pressure sensors 7, and further heat dissipation is carried out on the server. After all groups of pressure sensors 7 are traversed, according to a time period set by a program, after waiting for the time period, starting a new round of data acquisition of the pressure sensors 7, and sequentially circulating to execute a liquid cooling method.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (9)
1. The immersion liquid cooling device is characterized by comprising an immersion cabinet (1), wherein a liquid inlet (2) and a liquid outlet (3) are formed in the immersion cabinet (1), and a liquid guide cavity (4), a cooling cavity (5) and a liquid outlet cavity (6) are sequentially communicated between the liquid inlet (2) and the liquid outlet (3); the junction of the liquid guide cavity (4) and the cooling cavity (5) is a first interface, a plurality of pressure sensors (7) are arranged at the first interface, at least two temperature sensors (8) are arranged on the side wall of the cooling cavity (5), and the temperature sensors (8) are all positioned below the liquid level of the cooling liquid in the cooling cavity (5); the liquid inlets (2) and the liquid outlets (3) are arranged in pairs, at least two pairs are arranged, each pair of liquid inlets (2) and liquid outlets (3) is correspondingly connected with a cold liquid distribution unit (9), a plurality of pressure sensors (7) are distributed to the liquid inlets (2) nearby according to the distance from the liquid inlets (2), and the pressure sensors (7) are all in communication connection with the cold liquid distribution units (9); the distance between the first interface and the bottom surface of the server is sufficient to vary the pressure of the coolant flow at the bottom of the first interface when the server is placed in the submerged cabinet (1); the bottom of the immersing cabinet (1) is provided with a liquid guide plate (10), the liquid guide plate (10) divides the interior of the immersing cabinet (1) into a liquid guide cavity (4) and a cooling cavity (5), a plurality of first liquid guide ports (11) are arranged on the liquid guide plate (10), and the liquid guide cavity (4) and the cooling cavity (5) are communicated through the first liquid guide ports (11); the pressure sensor (7) is arranged on the bottom surface of the liquid guide plate (10).
2. The immersion liquid cooling apparatus according to claim 1, wherein a plurality of the pressure sensors (7) and a plurality of the first liquid guiding ports (11) are each arranged in a rectangular array on the liquid guiding plate (10), and a plurality of the pressure sensors (7) and a plurality of the first liquid guiding ports (11) are each grouped in rows, and a width of one server covers at least one row of the pressure sensors (7) and one row of the first liquid guiding ports (11).
3. The immersed liquid cooling device according to claim 1, wherein a liquid inlet cavity (12) is arranged between each liquid inlet port (2) and each liquid guide cavity (4), the liquid inlet cavities (12) are communicated with the liquid inlet ports (2), a plurality of second liquid guide ports (13) are arranged at the junctions of the liquid inlet cavities (12) and the liquid guide cavities (4), and the liquid inlet cavities (12) are communicated with the liquid guide cavities (4) through the second liquid guide ports (13).
4. The immersion liquid cooling device according to claim 1, wherein the liquid outlet cavity (6) is arranged on the side surface of the immersion cabinet (1), an opening (14) is arranged at the top of the liquid outlet cavity (6), the liquid outlet cavity (6) is communicated with the cooling cavity (5) through the opening (14), and the height of the opening (14) is lower than that of the immersion cabinet (1).
5. The immersion liquid cooling device according to claim 1, further comprising a tank (15), wherein the immersion tank (1), the cold liquid distribution unit (9), and the pipeline between the immersion tank (1) and the cold liquid distribution unit (9) are integrally connected to the tank (15).
6. A liquid cooling method using the immersion liquid cooling apparatus according to any one of claims 1 to 5, comprising:
acquiring a pressure average value of a group of pressure sensors (7), and calculating a pressure difference value between a preset pressure value and the pressure average value;
when the pressure difference value is greater than or equal to a first pressure threshold value, determining a cold liquid distribution unit (9) corresponding to the group of pressure sensors (7), and executing a power increase instruction of the cold liquid distribution unit (9);
waiting for preset time, acquiring a temperature average value of a temperature sensor (8), and calculating a temperature difference value between the preset temperature value and the temperature average value;
judging whether the temperature difference value is smaller than a first temperature threshold value or not; traversing a next set of pressure sensors (7) if the temperature difference is less than the first temperature threshold; and if the temperature difference value is larger than or equal to the first temperature threshold value, continuing to execute the power increasing instruction of the cold liquid distribution unit (9).
7. The liquid cooling method according to claim 6, wherein if the temperature difference is equal to or greater than the temperature threshold, continuing to execute the power increase instruction of the cold liquid distribution unit (9), specifically comprising:
if the temperature difference value is larger than or equal to the first temperature threshold value, judging whether the power of the cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) reaches a power threshold value or not;
triggering an alarm signal if the power of the cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) reaches a power threshold;
if the power of the cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) does not reach the power threshold value, continuing to execute the power increasing instruction of the cold liquid distribution unit (9), returning to wait for preset time, acquiring the temperature average value of the temperature sensors (8), and continuing to execute.
8. The liquid cooling method according to claim 6, further comprising:
when the pressure difference value is smaller than a first pressure threshold value, judging whether the cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) receives an overpower increase instruction or not;
if the cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) receives an over-power increasing instruction, maintaining the power unchanged, and traversing the next group of pressure sensors (7);
And if the cold liquid distribution unit (9) close to the group of pressure sensors (7) does not receive the power increasing instruction, executing the power decreasing instruction of the cold liquid distribution unit (9).
9. The liquid cooling method according to claim 8, wherein after executing the power reduction instruction of the cold liquid distribution unit (9), further comprising:
waiting for preset time, acquiring a temperature average value of a temperature sensor (8), and calculating a temperature difference value between the preset temperature value and the temperature average value;
judging whether the temperature difference is smaller than a first temperature threshold value, if so, traversing the next group of pressure sensors (7); if the temperature difference value is larger than or equal to the first temperature threshold value, calculating the pressure average value of all the pressure sensors (7) and the temperature average value of all the temperature sensors (8);
judging whether the pressure average value of all the pressure sensors (7) is larger than or equal to a second pressure threshold value or whether the temperature average value of all the temperature sensors (8) is larger than or equal to a second temperature threshold value;
triggering an alarm signal if the pressure average value of all the pressure sensors (7) is greater than or equal to a second pressure threshold value or the temperature average value of all the temperature sensors (8) is greater than or equal to a second temperature threshold value;
If the pressure mean value of all the pressure sensors (7) is smaller than the second pressure threshold value and the temperature mean value of all the temperature sensors (8) is smaller than the second temperature threshold value, traversing the next group of pressure sensors (7).
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| CN105487624A (en) * | 2014-10-10 | 2016-04-13 | 汤金菊 | High-density server liquid immersion cooling cabinet |
| CN106255387A (en) * | 2016-08-31 | 2016-12-21 | 深圳绿色云图科技有限公司 | Cooling system and data center |
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| CN113301764A (en) * | 2020-06-30 | 2021-08-24 | 阿里巴巴集团控股有限公司 | Cabinet, immersion liquid cooling system and immersion liquid cooling method |
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| RU2695089C2 (en) * | 2017-12-26 | 2019-07-19 | Общество с ограниченной ответственностью "Научно-Технический Центр ИннТех" | System for direct liquid cooling of electronic components |
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| CN105487624A (en) * | 2014-10-10 | 2016-04-13 | 汤金菊 | High-density server liquid immersion cooling cabinet |
| CN106255387A (en) * | 2016-08-31 | 2016-12-21 | 深圳绿色云图科技有限公司 | Cooling system and data center |
| CN108882652A (en) * | 2018-08-21 | 2018-11-23 | 葛俊 | Liquid-immersed cooling machine cabinet, system and the maintaining method of high density server |
| CN113301764A (en) * | 2020-06-30 | 2021-08-24 | 阿里巴巴集团控股有限公司 | Cabinet, immersion liquid cooling system and immersion liquid cooling method |
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