CN114901037A - 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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- CN114901037A CN114901037A CN202210472307.6A CN202210472307A CN114901037A CN 114901037 A CN114901037 A CN 114901037A CN 202210472307 A CN202210472307 A CN 202210472307A CN 114901037 A CN114901037 A CN 114901037A
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- 239000007788 liquid Substances 0.000 title claims abstract description 437
- 238000001816 cooling Methods 0.000 title claims abstract description 111
- 238000007654 immersion Methods 0.000 claims abstract description 85
- 239000000110 cooling liquid Substances 0.000 claims abstract description 69
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 22
- 239000002826 coolant Substances 0.000 description 20
- 239000012530 fluid Substances 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration 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
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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
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- 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
Abstract
The invention relates to an immersed liquid cooling device and a liquid cooling method thereof, comprising an immersion cabinet, wherein the immersion cabinet is provided with a liquid inlet and a liquid outlet, 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 both 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 is correspondingly connected with a cold liquid distribution unit, the pressure sensors are distributed to the liquid inlets according to the distance from the liquid inlets, and the pressure sensors are in communication connection with the cold liquid distribution units. By adopting the immersion type liquid cooling device and the liquid cooling method thereof, the server can be subjected to targeted heat dissipation, the accurate control of the heat dissipation is realized, the local hot spot is eliminated, and the flow field in the cooling liquid is optimized.
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 the information society of China, the investment of the data center is gradually increased, and the development of the data center also enters a new stage. Meanwhile, the national energy strategy of 'carbon peak reaching and carbon neutralization' puts forward a new requirement on 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 on the development of the data center.
Liquid cooling is the cooling mode that the liquid that uses high specific heat capacity satisfies IT equipment heat dissipation demands such as server as the working medium of heat transmission, and the mode that is more popular at present is with the server submergence in special design's box, then draws the coolant liquid out through the pipeline, exchanges heat through CDU (Coolant distribution Unit), and this kind of heat transfer mode has fine application prospect to liquid cooling data center, but the cooling accuracy of the immersed liquid cooling technique of prior art is low, and the radiating efficiency is not high.
Disclosure of Invention
In view of the above, it is desirable to provide an immersion type liquid cooling apparatus and a liquid cooling method thereof capable of improving cooling accuracy.
On one hand, the immersed liquid cooling device comprises an immersion cabinet, wherein a liquid inlet and a liquid outlet are arranged on the immersion 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 the liquid inlets and the liquid outlets are arranged, each pair of the liquid inlets and the liquid outlets is correspondingly connected with a cold liquid distribution unit, the pressure sensors are distributed to the liquid inlets nearby according to the distance from the liquid inlets, and the pressure sensors are 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 change the pressure of the flow of cooling fluid at the bottom of the first interface when the server is placed on the immersion tank.
In one embodiment, a liquid guide plate is arranged at the bottom of the immersion cabinet, the liquid guide plate divides the interior of the immersion 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 guide ports are arranged on the liquid guide plate in a rectangular array, the pressure sensors and the first liquid guide 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 guide ports.
In one embodiment, a liquid inlet cavity is arranged between each liquid inlet and the liquid guide cavity, the liquid inlet cavity is communicated with the liquid inlet, a plurality of second liquid guide ports are arranged at the junctions of the liquid inlet cavity and the liquid guide cavities, and the liquid inlet cavity is communicated with the liquid guide cavities through the second liquid guide ports.
In one embodiment, the liquid outlet cavity is arranged on the side surface of the immersion cabinet, an opening is arranged at 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 immersion cabinet.
In one embodiment, the device further comprises a box body, and the immersion cabinet, the cold liquid distribution unit and a pipeline between the immersion cabinet and the cold liquid distribution unit are integrally connected to the box body.
In another aspect, a liquid cooling method is provided, the method comprising:
acquiring a pressure mean value of a group of pressure sensors, and calculating a pressure difference value between a preset pressure value and the pressure mean 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 a preset time, acquiring a temperature mean value of the temperature sensor, and calculating a temperature difference value between a preset temperature value and the temperature mean value;
judging whether the temperature difference value is smaller than a first temperature threshold value or not; traversing the next group of pressure sensors if the temperature difference is less than the first temperature threshold; and if the temperature difference is larger than or equal to the first temperature threshold, 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, continuing to execute the power increase instruction of the cold liquid distribution unit specifically includes:
if the temperature difference is larger than or equal to the first temperature threshold, judging whether the power of the cold liquid distribution unit corresponding to the group of pressure sensors reaches a power threshold;
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;
and if the power of the cold liquid distribution unit corresponding to the group of pressure sensors does not reach the power threshold value, continuously executing the power increase instruction of the cold liquid distribution unit, then returning to wait for the preset time, acquiring the temperature average value of the temperature sensors, and continuously executing.
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 a power increase instruction;
if the cold liquid distribution unit corresponding to the group of pressure sensors receives the power increasing instruction, keeping the power unchanged, and traversing the next group of pressure sensors;
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 the executing the power reduction instruction of the cold liquid distribution unit, the method further includes:
waiting for a preset time, acquiring a temperature mean value of the temperature sensor, and calculating a temperature difference value between a preset temperature value and the temperature mean value;
judging whether the temperature difference is smaller than a first temperature threshold value or not, and traversing the next group of pressure sensors if the temperature difference is smaller than the first temperature threshold value; and if the temperature difference is larger than or equal to the first temperature threshold, calculating the pressure mean value of all the pressure sensors and the temperature mean value of all the temperature sensors.
Judging whether the pressure mean values of all the pressure sensors are greater than or equal to a second pressure threshold or the temperature mean values of all the temperature sensors are greater than or equal to a second temperature threshold;
if the pressure mean value of all the pressure sensors is greater than or equal to the second pressure threshold value or the temperature mean value of all the temperature sensors is greater than or equal to the second temperature threshold value, triggering an alarm signal;
and traversing the next group of pressure sensors 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.
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 real-time perception submerge the state parameter of the inside coolant liquid of cabinet, including pressure parameter and temperature parameter, can obtain the state in coolant liquid flow field according to these state parameters, including pressure state and temperature state, then adjust the power of cold liquid distribution unit according to pressure state and temperature state, can carry out the pertinence heat dissipation to the server, radiating accurate control has been realized, in order to eliminate local focus, thereby optimize the inside flow field of coolant liquid, the heat-sinking capability of automatic regulation submerge cabinet has been realized, the radiating efficiency is improved, still realized the rational utilization of heat dissipation resource, the heat dissipation cost has been reduced.
2. The immersion cabinet, the cold liquid distribution unit, and the pipelines between the immersion cabinet and the cold liquid distribution unit are integrally connected to the box body, so that 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 in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an immersion liquid cooling apparatus of the present invention;
FIG. 2 is a wire frame diagram of an immersion tank of the immersion liquid cooling apparatus of the present invention;
FIG. 3 is an enlarged partial schematic view of FIG. 2 at A;
FIG. 4 is a schematic diagram of the liquid guide plate of the immersion liquid cooling apparatus of the present invention;
FIG. 5 is a cross-sectional view and a coolant flow schematic of the submerged liquid cooling apparatus of the present invention;
FIG. 6 is a wire frame diagram of an immersion liquid cooling apparatus of the present invention;
FIG. 7 is a flow chart of a first method of the liquid cooling method of the present invention;
fig. 8 is a flow chart of a second method of the liquid cooling method of the present invention.
The specification reference numbers indicate:
1. an immersion cabinet; 2. a liquid inlet; 3. a liquid outlet; 4. a drainage 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 box body; 16. hanging a lug; 17. a limiting clamping groove; 18. a primary-side liquid inlet; 19. a primary side liquid outlet; 20. a secondary side liquid inlet; 21. a secondary side liquid outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In order to improve the heat dissipation effect of the server, the server is immersed in a specially designed box body in a popular mode at present, then cooling liquid is led out through a pipeline, heat exchange is carried out through a CDU (compact disc unit), the heat exchange mode has a good application prospect for a liquid cooling data center, but the refrigeration accuracy of the immersed liquid cooling technology in the prior art is not high. In order to improve the heat dissipation efficiency of the liquid cooling technology, the invention provides an immersed liquid cooling device and a liquid cooling method thereof, 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, performing targeted power regulation and control on a cold liquid distribution unit corresponding to a server needing heat dissipation; the cooling device not only can improve the cooling precision, but also can improve the cooling efficiency, improve the utilization rate of cooling resources and reduce the cooling cost.
Example one
An immersion type liquid cooling apparatus is provided, as shown in 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 mean value exceeds a first pressure threshold value, it is indicated that a server is placed above the pressure sensors 7, the flow rate of 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 an abnormal signal of the pressure sensor 7 is transmitted to a cold liquid distribution unit 9 corresponding to the liquid inlet 1, the cold liquid distribution unit 9 executes a power increase instruction after receiving the abnormal signal of the pressure sensor 7, the flow rate of the cooling liquid at 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 temperature data of the cooling liquid, judges whether the temperature of the server is normal or not according to the temperature data, and if the temperature mean value is abnormal, 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 immersion cabinet 1, wherein a liquid inlet 2 and a liquid outlet 3 are arranged on 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 inlet 2 and the liquid outlet 3 are arranged in pairs, at least two pairs of liquid inlets 2 and liquid outlets 3 are arranged, each pair of liquid inlet 2 and liquid outlet 3 is correspondingly connected with a cold liquid distribution unit 9, the pressure sensors 7 are distributed to the liquid inlet 2 nearby according to the distance from the liquid inlet 2, and the pressure sensors 7 are in communication connection with the cold liquid distribution units 9 corresponding to the liquid inlets 2; the distance between the first interface and the bottom surface of the server is sufficient to change the pressure of the flow of cooling liquid at the bottom of the first interface when the server is placed on the immersion tank 1.
The main working principle of the immersed liquid cooling device is that a server is directly immersed in cooling liquid, the flowing cooling liquid dissipates heat of the server, cooling heat is exchanged with the server, and the heat released by the server is taken away. The cooling liquid is changed into hot liquid after exchanging heat with the server, and the cold liquid distribution unit 9 is responsible for re-cooling the hot liquid after exchanging heat, changing the hot liquid into the cooling liquid, and providing power for the cooling liquid to flow in the immersion cabinet 1.
As shown in fig. 6, the cold liquid distribution 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 the external cooling liquid exchanges with the cold liquid distribution unit 9, the external cooling liquid enters the cold liquid distribution unit through the primary side liquid inlet 18, then the cold liquid distribution unit 9 exchanges heat between the primary side and the secondary side, the heat exchanges flow out through the primary side liquid outlet 19, and the cooling liquid flowing out through the primary side liquid outlet 19 becomes 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 heat exchange is carried out between cooling liquid in the immersion cabinet 1 and a server, the cooling liquid becomes hot liquid and flows into the cold liquid distribution unit 9 through the liquid outlet 3 and the secondary side liquid inlet 20, after heat exchange is carried out in the cold liquid distribution unit 9, the hot liquid becomes 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 circulating cooling of the cooling liquid is realized. After entering the immersion 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 after heat exchange is carried out between the cooling liquid and the server in the cooling cavity 5, the cooling liquid finally enters the liquid outlet cavity 6 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 an actual application scenario, such as a cylinder, a cuboid, a square, and the like, and preferably, the immersion cabinet 1 has a cuboid shape, because the general server has a cuboid shape, the server is easily placed in the cuboid immersion cabinet 1, so that the space is saved, and the utilization rate of the space is improved.
The flowing direction of the cooling liquid can be from bottom to top, from top to bottom, from left to right or other combined directions along the immersion cabinet 1, preferably, the flowing direction of the cooling liquid adopts the flowing direction from bottom to top, the heat dissipation efficiency of the flowing direction is high, the temperature sensor 8 and the pressure sensor 7 are easy to arrange, the structure is simple, and the following embodiments adopt the flowing direction for description. According to the flow direction from bottom to top, set up inlet 2 in the bottom of submergence cabinet 1, cooling chamber 5 is located the top in drain chamber 4, and the coolant liquid gets into drain chamber 4 from inlet 2, and upward flow in proper order reaches cooling chamber 5, and the coolant liquid gets into out liquid chamber 6 through the top in cooling chamber 5 at last, and the rethread liquid outlet 3 gets into cold liquid distribution unit 9, as shown in fig. 5.
The juncture 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 a server is placed in the immersion cabinet 1, the bottom surface of the server is close to the first interface, and the pressure of the cooling liquid entering the cooling cavity 5 from the liquid guide cavity 4 through the first liquid guide port 11 can be changed, so that the plurality of pressure sensors 7 are arranged at the first interface, if the pressure acquired by the pressure sensor 7 at a certain position of the first interface is suddenly increased and exceeds a first pressure threshold value, the server is placed at the position, and therefore, the server can be judged whether or not exists near the pressure sensor 7 through the state parameters acquired by the pressure sensor 7, so that the power of a cooling liquid distribution unit 9 corresponding to the pressure sensor 7 is increased for the server, the heat can be radiated in a targeted manner, and the heat radiation efficiency is improved, but also the cost can be reduced by simply increasing the power of the cold liquid distribution unit 9 corresponding to the pressure sensor 7.
The side wall of the cooling cavity 5 is provided with a temperature sensor 8, temperature data of the cooling liquid can be acquired through the temperature sensor 8, the temperature state of a flow field is obtained according to temperature parameters, if the temperature of the cooling liquid is too high, the temperature of the server is too high, namely the heat exchange capacity between the server and the cooling liquid is poor, the heat dissipation capacity needs to be enhanced, the power of the cold liquid distribution unit 9 is improved, the flow rate of the cooling liquid is improved, and the heat exchange capacity between the server and the cooling liquid is further improved; if the temperature of the cooling liquid is in a normal state, the temperature of the server is normal, and the power of the cold 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.
Preferably, the pressure sensors 7 are grouped according to the number of the servers which can be contained in the immersion cabinet 1, for example, the immersion cabinet 1 can contain 4 immersion cabinets 1 at most, the pressure sensors 7 can be divided into 1-4 groups, further, the pressure sensors 7 are grouped according to the maximum number of the servers which can be contained in the immersion cabinet 1, for example, the immersion cabinet 1 can contain 4 immersion cabinets 1 at most, the pressure sensors 7 are divided into 4 groups, and the group of pressure sensors 7 corresponds to one server, so that a targeted heat dissipation mode can be effectively adopted, local hot spots are eliminated, on the premise of improving the heat dissipation capacity, reasonable utilization of resources can be achieved, and the 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 located in the middle, so that the distance between the group of pressure sensors 7 and the two liquid inlets 1 is equal, and the distance is longer, the group of pressure sensors 7 can be selected to be simultaneously distributed to the two liquid inlets 1, and then the cold liquid distribution unit 9 connected with the two liquid inlets 1 can radiate heat to the server in the middle; or, the maximum number of servers that can be accommodated by each immersion cabinet 1 is set to be even, so the pressure sensors 7 are also even groups, and the grouping of the pressure sensors 7 of the two liquid inlets 1 is convenient to set.
The pressure sensors 7 are distributed to the liquid inlet 2 in close proximity to the liquid inlet 2, and the pressure sensors 7 are in communication connection with a cold liquid distribution unit 9. For example, the immersion cabinet 1 is provided with two liquid inlets 2, a liquid inlet A, a liquid inlet B and four groups of pressure sensors 7, wherein the first group and the second group of pressure sensors 7 are close to the liquid inlet A, the third group and the fourth group of pressure sensors 7 are close to the liquid inlet B, then the first group and the second group of pressure sensors 7 correspond to the cold liquid distribution units 9 corresponding to the liquid inlet A, and then the third group and the fourth group of pressure sensors 7 correspond to the cold liquid distribution units 9 corresponding to the liquid inlet B. If the pressure mean value of a certain group of pressure sensors 7 is abnormal and exceeds a first pressure threshold value, it indicates that the flow velocity of the cooling liquid needs to be enhanced at the group of pressure sensors, the signal of the group of pressure sensors 7 is transmitted to the cooling liquid distribution unit 9 connected to the liquid inlet 2 corresponding to the group of pressure sensors 7, the cooling liquid distribution unit 9 executes a power increase instruction to increase the flow velocity of the cooling liquid at the liquid inlet 2 nearest to the current position, so that the power of the cooling liquid distribution unit 9 connected to the liquid inlet 2 needs to be increased to improve the heat exchange capacity between the server and the cooling liquid, realize targeted heat dissipation, and eliminate local hot spots.
The cooling liquid flows to the cooling cavity 5 through the liquid inlet 2, if a certain group of pressure sensors 7 is greater than or equal to a first pressure threshold value, it indicates that a server is placed at the position, the server blocks the cooling liquid below the server through the first liquid guide port 11, because the bottom surface of the server is close to the top surface of the liquid guide plate 10 after the server is placed on the immersion cabinet 1, and the distance from the bottom surface of the server to 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 cooling liquid flowing to the bottom surface of the server can generate resistance under the blocking of the bottom surface of the server, so that the pressure value collected by the pressure sensors 7 below the server is greater than the first pressure threshold value, at this time, the liquid inlet 2 closest to the group of pressure sensors 7 increases the flow rate, that is, the power of the cooling liquid distribution unit 9 corresponding to the liquid inlet 2 is increased, and the server can be purposefully cooled, local hot spots are eliminated, and the heat dissipation efficiency is improved.
In addition, be provided with the hangers 16 that are used for hanging the server on the inner wall of submergence cabinet 1, the hangers 16 department on submergence cabinet 1 is hung to the both sides at server top, and the server both sides are provided with spacing draw-in groove 17, play the limiting displacement to the server, prevent that the server from producing when carrying out heat exchange with the coolant liquid that flows and removing, 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 from top to bottom aligns in same vertical plane, promptly, same server is spacing in two upper and lower spacing draw-in grooves 17.
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 ports 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 ports 11.
The bottom of submergence cabinet 1 sets up drain trap 10, drain trap 10 divide into drain chamber 4 and cooling chamber 5 two parts with the inside of submergence cabinet 1, the drain trap 10 position is also exactly first interface department, the coolant liquid at first passes through drain chamber 4 and passes through the switching-over, then flow to cooling chamber 5 upwards through first drain port 11 on the drain trap 10, first drain port 11 on the drain trap 10 shunts the coolant liquid in drain chamber 4, even upwards flow, make the flow rate of the coolant liquid of same horizontal plane comparatively even, so the flow pressure of the coolant liquid in the same horizontal plane is also comparatively even, the accuracy of the pressure value that pressure sensor 7 gathered has been improved. The axis direction of first drain mouth 11 is vertical upwards, with the coolant liquid upwards drainage, and the shape of first drain mouth 11 sets up to cylindrical, accords with the hydrodynamics characteristic, the flow of the coolant liquid of being convenient for.
In one embodiment, the pressure sensors 7 and the first liquid guide ports 11 are arranged in a rectangular array on the liquid guide plate 10, the pressure sensors 7 and the first liquid guide 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 guide ports 11.
The pressure sensor 7 is arranged on the liquid guide plate 10, the liquid guide plate 10 is located at the junction of the liquid guide cavity 4 and the cooling cavity 5, namely, the first interface, so that the pressure sensor 7 is located at the first interface, the flowing speed and the flowing pressure of the cooling liquid 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 conveniently acquire pressure data.
The pressure sensors 7 and the first liquid guiding ports 11 are arranged in a rectangular array, as shown in fig. 4, the distance between two adjacent dotted lines on the liquid guiding plate 10 is not less than the width of the server, as long as the width of the server can be ensured to be located between two adjacent dotted lines. The width of the server at least covers a row of pressure sensors 7 and a row of first liquid guide ports 11, preferably, the width of the server covers a row of pressure sensors 7 and a row of third liquid guide ports 11, which are determined according to actual conditions, including the number and diameter of the first liquid guide ports 11, so that when the server is placed on the immersion cabinet 1, the bottom of the server can have sufficient cooling liquid flowing, so as to collect a pressure value below the bottom surface of the server, and then whether the server exists at the position of the row of pressure sensors 7 can be effectively judged, so that targeted heat dissipation is facilitated, and local hot spots are eliminated. If the first liquid guide port 11 is not covered on the bottom surface of the server when the server is placed on the immersion cabinet 1, the pressure change between when the server is placed on the immersion cabinet 1 and when the server is not placed on the immersion cabinet 1 is not large, and it is not convenient to detect whether the server exists.
As shown in fig. 4, 2 cooling liquid distribution units 9 are provided, which are an a cooling liquid distribution unit and a B cooling liquid distribution unit, the a cooling liquid distribution unit corresponds to an a liquid inlet and an a liquid outlet, the B cooling liquid distribution unit corresponds to a B liquid inlet and a B liquid outlet, all the pressure sensors 7 are divided into four groups, each row is divided into one group, each group is divided into one group, a group of pressure sensors 7 and three rows of first liquid guide ports 11 are provided between two adjacent dotted lines, that is, a group of pressure sensors 7 and three rows of first liquid guide ports 11 are provided in the width of one server, the pressure sensors 7 of the first group and the second group are closer to the a cooling liquid distribution unit a, the pressure sensors 7 of the third group and the fourth group are closer to the B cooling liquid distribution unit, therefore, when the server is placed on the immersion cabinet 1, and the bottom surface of the server is located right above the first liquid guide ports 11, because the bottom surface of the server is closer to the top surface of the liquid guide plate 10, the bottom surface of the server is far from the top surface of the liquid guide plate 10 enough to change the flowing pressure of the cooling liquid under the liquid guide plate 10, the pressure value of the first group of pressure sensors 7 can be increased and is larger than a first pressure threshold value, the A liquid inlet is closest to the first group of pressure sensors 7, the A liquid inlet corresponds to the A cold liquid distribution unit, and therefore the power of the A cold liquid distribution unit can be increased, the flow speed of the cooling liquid of the A liquid inlet is improved, heat of the server is radiated in a targeted mode, local hot spots are eliminated, heat radiation efficiency is improved, and heat radiation cost is reduced.
In one embodiment, a liquid inlet cavity 12 is disposed between each liquid inlet 2 and the liquid guide cavity 4, the liquid inlet cavity 12 is communicated with the liquid inlet 2, a plurality of second liquid guide ports 13 are disposed at a junction of the liquid inlet cavity 12 and the liquid guide cavity 4, and the liquid inlet cavity 12 is communicated with the liquid guide cavity 4 through the second liquid guide ports 13.
If inlet 2 is direct connection drain chamber 4, it is inhomogeneous to cause the coolant flow dynamic pressure in drain chamber 4 easily, can influence pressure sensor 7's pressure acquisition result, consequently still be provided with feed liquor chamber 12 between drain chamber 4 and inlet 2, the higher coolant liquid of velocity of flow at first gets into feed liquor chamber 12 through inlet 2, buffer in feed liquor chamber 12 and back get into drain chamber 4 through a plurality of second drain mouth 13 of feed liquor chamber 12 and drain chamber 4 juncture, second drain mouth 13 also sets up to cylindrically, and the axis perpendicular to feed liquor chamber 12 of second drain mouth 13 and the interface of drain chamber 4, make the more even inflow of coolant liquid lead chamber 4. In addition, liquid inlets 2 connected with the two cold liquid distribution units 9 are respectively arranged at the bottoms of two opposite sides of the immersion cabinet 1. When the server is placed into the immersion cabinet 1, the length direction of the server is perpendicular to the axis of the second liquid guide port 13, the flowing direction of the cooling liquid flowing into the liquid guide chamber 4 through the liquid inlet chamber 12 is along the axis direction of the second liquid guide port 13, the cooling liquid on two sides flows together and then upwards enters the cooling chamber 5 through the first liquid guide port 11, when the immersion cabinet 1 is placed in the direction of the length direction of the server perpendicular to the second liquid guide port 13, the liquid inlet 2 and the cooling liquid distribution unit 9 corresponding to the server at the moment are judged easily through the pressure value of the pressure sensor 7.
In one embodiment, 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.
The liquid outlet chamber 6 is used for conveying the cooling liquid which exchanges heat with the server to the cold liquid distribution unit 9. Since the cooling liquid flows 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 the opening 14. The height of the opening 14 is lower than the height of the immersion tank 1, so that the cooling liquid in the cooling chamber 5 flows upwards to the opening 14, does not flow out of the immersion tank 1, but flows directly 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 device further comprises a box body 15, wherein the immersion cabinet 1, the cold liquid distribution unit 9 and a pipeline between the immersion cabinet 1 and the cold liquid distribution unit 9 are integrally connected to the box body 15
The immersion tank 1 and the cold liquid distribution unit 9 are mounted in a movable cabinet 15, the cabinet 15 being movable according to the specific circumstances. The pipeline integration between submergence cabinet, cold liquid distribution unit, submergence cabinet 1 and cold liquid distribution unit 9 is connected on the box, and simple structure has reduced the complexity of system, has improved the stability of system.
Example two
A liquid cooling method using an immersion type liquid cooling apparatus is provided as shown in fig. 7 to 8.
The liquid cooling method comprises the following steps:
acquiring a pressure mean value of a group of pressure sensors 7, and calculating a pressure difference value between a preset pressure value and the pressure mean value;
when the pressure difference is greater than or equal to the first pressure threshold, determining the 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 a preset time, acquiring a temperature mean value of the temperature sensor 8, and calculating a temperature difference value between a preset temperature value and the temperature mean 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 group of pressure sensors 7; if the temperature difference is greater than or equal to the first temperature threshold, the power increase instruction of the cold liquid distribution unit 9 is continuously executed.
In the liquid cooling method using the immersion type liquid cooling apparatus, the pressure sensors 7 are grouped according to the number of servers that can be accommodated in the immersion cabinet 1, and 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 four servers at most, so that the pressure sensors 7 are divided into four groups. The liquid cooling method comprises the following steps: and pressure values of four groups of pressure sensors 7 are collected in sequence. Firstly, obtaining a pressure mean value of a first group of pressure sensors 7, namely, obtaining a mean value of pressure values collected by the first group of pressure sensors 7, and then, subtracting the pressure mean value from a preset pressure value to obtain a pressure difference value; then, the pressure difference is compared with the first pressure threshold, and when the pressure difference is greater than or equal to the first pressure threshold, it indicates that a server is placed above the group of pressure sensors 7, and therefore it is necessary to determine the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7, and then issue a power increase command to the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7, so that the cold liquid distribution unit 9 increases its power to increase the heat dissipation capacity of the server. Waiting for a preset time, because the server cannot immediately and sufficiently dissipate heat after the cold liquid distribution unit 9 executes the power increase instruction, the server can sufficiently dissipate heat after the cooling liquid circulates for a period of time, so that the temperature average value of the temperature sensor 8 is obtained after waiting for the preset time, the temperature difference value 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 or not is judged according to the temperature difference value; if the temperature difference value is smaller than the first temperature threshold value, the server is indicated to be sufficiently radiated, the next group of pressure sensors 7 are traversed, and pressure values of the next group of pressure sensors 7 are collected, so that whether the server is placed above the next group of pressure sensors 7 or not is judged; if the temperature difference is greater than or equal to the first temperature threshold, it indicates that the power of the cold liquid distribution unit 9 is not enough at this time, and the server does not sufficiently dissipate heat, so that it is necessary to continue to execute 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 is determined according to 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 continuing to execute the power increase instruction of the cold liquid distribution unit 9 specifically includes:
if the temperature difference is greater than or equal to the first temperature threshold, judging whether 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 reaches a power threshold, triggering an alarm signal;
if the power of the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 does not reach the power threshold, continuing to execute the power increase instruction of the cold liquid distribution unit 9, then returning to wait for the preset time, obtaining the temperature average value of the temperature sensor 8, and continuing to execute.
If the temperature difference is greater than or equal to the first temperature threshold, it indicates that the power increase instruction of the cold liquid distribution unit 9 needs to be continuously executed to further improve the cooling capacity of the server, but the cold liquid distribution unit 9 has a rated power value, and if the rated power value is reached, the cooling capacity of the server cannot be further improved, so that it needs to further determine whether the power of the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 reaches 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, it indicates that the power of the cold liquid distribution unit 9 at this time cannot meet the cooling requirement of the server, and it indicates that the power consumption of the server is too large and the heat dissipation is too much, and at this time, an alarm signal needs to be sent out to prompt operation and maintenance personnel 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, it indicates that the power of the cold liquid distribution unit 9 can be continuously increased, the power increase instruction of the cold liquid distribution unit 9 is continuously executed, then the step of waiting for the preset time to obtain the temperature average value of the temperature sensor 8 is returned, and the step of continuously executing is continued 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 is smaller than the first pressure threshold, judging whether the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 receives an overpower increase instruction;
if the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 receives the power increase instruction, keeping the power unchanged, and traversing the next group of pressure sensors 7;
if the cold fluid distribution unit 9 adjacent to the group of pressure sensors 7 does not receive the power increase command, the power decrease command of the cold fluid 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 unit 9 corresponding to the group of pressure sensors 7 receives a power increase instruction; if the cold liquid distribution unit 9 corresponding to the group of pressure sensors 7 receives the power increasing instruction, keeping the power of the cold liquid distribution unit 9 unchanged, and traversing the next group of pressure sensors 7; if the cold fluid distribution unit 9 close to the set of pressure sensors 7 does not receive the power increase command, it means that there is no server here, and it is necessary to execute the power decrease command of the cold fluid distribution unit 9 to decrease the power of the cold fluid distribution unit 9. When the power of the cold liquid distribution unit 9 is reduced, the power reduction amplitude after each power reduction instruction is received may be set, or the power reduction amplitude is determined according to the temperature difference, and the larger the temperature difference is, the larger the power reduction amplitude is. For example, 4 sets of pressure sensors correspond to two cold fluid distribution units, as shown in fig. 4, one cold fluid 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, the pressure average value of the second set of pressure sensors is normal, then the cold fluid distribution units corresponding to the first set of servers and the second set of servers cannot be reduced, because the cold fluid distribution unit needs to dissipate heat for the server above the first set of pressure sensors, and therefore, it is necessary to determine whether the cold fluid distribution unit 9 corresponding to the set of pressure sensors 7 has received a power increase instruction.
In one embodiment, after executing the power reduction instruction of the cold liquid distribution unit 9, the method further includes:
waiting for a preset time, acquiring a temperature mean value of the temperature sensor 8, and calculating a temperature difference value between a preset temperature value and the temperature mean value;
judging whether the temperature difference is smaller than a first temperature threshold value or not, and traversing the next group of pressure sensors 7 if the temperature difference is smaller than the first temperature threshold value; if the temperature difference is greater than or equal to the first temperature threshold, the pressure mean values of all the pressure sensors 7 and the temperature mean values of all the temperature sensors 8 are calculated.
After the power reduction instruction of the cold liquid distribution unit 9 is executed, waiting for a preset time, then obtaining a temperature mean value of the temperature sensor 8, calculating a temperature difference value between a preset temperature value and the temperature mean 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 no server exists, and if the temperature is normal, traversing the next group of pressure sensors 7, and collecting pressure values of the next group of pressure sensors 7 to judge whether a 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 means that the temperature is abnormal when there is no server above the group 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 pressure mean values of all the pressure sensors 7 and the temperature mean values of all the temperature sensors 8, the method further includes:
judging whether the pressure mean values of all the pressure sensors 7 are greater than or equal to a second pressure threshold or the temperature mean values of all the temperature sensors 8 are greater than or equal to a second temperature threshold;
if the pressure mean value of all the pressure sensors 7 is greater than or equal to the second pressure threshold value or the temperature mean value of all the temperature sensors 8 is greater than or equal to the 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 and the temperature mean value of all temperature sensors 8 is smaller than the second temperature threshold, the next group of pressure sensors 7 is traversed.
After calculating the pressure mean values of all the pressure sensors 7 and the temperature mean values of all the temperature sensors 8, judging whether the pressure mean values of all the pressure sensors 7 are greater than or equal to a second pressure threshold value or the temperature mean values of all the temperature sensors 8 are greater than or equal to a second temperature threshold value; if the pressure mean values of all the pressure sensors 7 are greater than or equal to the second pressure threshold value or the temperature mean values of all the temperature sensors 8 are greater than or equal to the second temperature threshold value, it is indicated that the immersion cabinet 1 is abnormal, for example, the liquid outlet 3 of the immersion cabinet 1 is blocked, and an alarm signal needs to be triggered to notify operation and maintenance personnel to perform maintenance; if the pressure mean values of all the pressure sensors 7 are smaller than the second pressure threshold value and the temperature mean values of all the temperature sensors 8 are smaller than the second temperature threshold value, it is indicated that the temperature is not abnormal, and the next group of pressure sensors 7 is traversed.
Each group of pressure sensors 7 sequentially traverses and collects data of each group of pressure sensors 7 to judge whether a server is placed above the pressure sensors 7 or not, and further the server is cooled. After all the 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, circulating in sequence and executing a liquid cooling method.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An immersed liquid cooling device is characterized by comprising an immersion cabinet (1), wherein a liquid inlet (2) and a liquid outlet (3) are arranged on 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 both positioned below the liquid level of the cooling liquid in the cooling cavity (5); the liquid inlet (2) and the liquid outlet (3) are arranged in pairs, at least two pairs of liquid inlets (2) and liquid outlets (3) 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 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 change the pressure of the flow of cooling liquid at the bottom of the first interface when the server is placed inside the immersion tank (1).
2. An immersion liquid cooling device according to claim 1, wherein 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 chamber (4) and the cooling chamber (5), the liquid guide plate (10) is provided with a plurality of first liquid guide ports (11), and the liquid guide chamber (4) and the cooling chamber (5) are communicated through the first liquid guide ports (11).
3. An immersion liquid cooling device according to claim 2, characterized in that a plurality of said pressure sensors (7) and a plurality of said first liquid guiding ports (11) are arranged in a rectangular array on said liquid guiding plate (10), and a plurality of said pressure sensors (7) and a plurality of said first liquid guiding ports (11) are grouped in rows, the width of a server covering at least one row of said pressure sensors (7) and one row of said first liquid guiding ports (11).
4. The immersion liquid cooling device of claim 1, wherein a liquid inlet chamber (12) is disposed between each liquid inlet (2) and the liquid guide chamber (4), the liquid inlet chamber (12) is communicated with the liquid inlet (2), a plurality of second liquid guide ports (13) are disposed at a junction of the liquid inlet chamber (12) and the liquid guide chamber (4), and the liquid inlet chamber (12) is communicated with the liquid guide chamber (4) through the second liquid guide ports (13).
5. The immersion liquid cooling device of claim 1, wherein the liquid outlet chamber (6) is disposed at a side of the immersion cabinet (1), an opening (14) is disposed at a top of the liquid outlet chamber (6), the liquid outlet chamber (6) is communicated with the cooling chamber (5) through the opening (14), and a height of the opening (14) is lower than a height of the immersion cabinet (1).
6. The immersion liquid cooling device of claim 1, further comprising a tank (15), wherein the immersion tank (1), the cold liquid distribution unit (9), and the piping between the immersion tank (1) and the cold liquid distribution unit (9) are integrally connected to the tank (15).
7. A liquid cooling method using the immersion type liquid cooling apparatus as claimed in any one of claims 1 to 6, wherein the liquid cooling method comprises:
acquiring a pressure mean value of a group of pressure sensors (7), and calculating a pressure difference value between a preset pressure value and the pressure mean 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 a preset time, acquiring a temperature mean value of the temperature sensor (8), and calculating a temperature difference value between a preset temperature value and the temperature mean 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 group of pressure sensors (7); and if the temperature difference is larger than or equal to the first temperature threshold, continuing to execute the power increasing instruction of the cold liquid distribution unit (9).
8. The liquid cooling method according to claim 7, wherein if the temperature difference is greater than or equal to the temperature threshold, the continuing to execute the power increase command of the cold liquid distribution unit (9) specifically comprises:
if the temperature difference is larger than or equal to the first temperature threshold, judging whether 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) reaches a power threshold value, triggering an alarm signal;
and 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 increase instruction of the cold liquid distribution unit (9), then returning to wait for the preset time, acquiring the temperature average value of the temperature sensor (8), and continuing to execute.
9. The liquid cooling method of claim 7, further comprising:
when the pressure difference is smaller than a first pressure threshold value, judging whether a cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) receives an overpower increase instruction;
if the cold liquid distribution unit (9) corresponding to the group of pressure sensors (7) receives a power increase instruction, keeping the power unchanged, and traversing the next group of pressure sensors (7);
if the cold liquid distribution unit (9) close to the group of pressure sensors (7) does not receive the power increasing command, the power decreasing command of the cold liquid distribution unit (9) is executed.
10. The liquid cooling method of claim 9, wherein said executing the power reduction command of the cold liquid distribution unit (9) further comprises:
waiting for a preset time, acquiring a temperature mean value of the temperature sensor (8), and calculating a temperature difference value between a preset temperature value and the temperature mean value;
judging whether the temperature difference is smaller than a first temperature threshold value or not, and traversing the next group of pressure sensors (7) if the temperature difference is smaller than the first temperature threshold value; if the temperature difference is larger than or equal to the first temperature threshold, calculating the pressure mean value of all the pressure sensors (7) and the temperature mean value of all the temperature sensors (8);
judging whether the pressure mean value of all the pressure sensors (7) is greater than or equal to a second pressure threshold value or the temperature mean 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 greater than or equal to a second pressure threshold value or the temperature mean value of all the temperature sensors (8) is greater than or equal to a second temperature threshold value, triggering an alarm signal;
and traversing the next group of pressure sensors (7) 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.
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| CN115643736A (en) * | 2022-12-26 | 2023-01-24 | 湖南大学 | Immersion type cooling device and control method thereof |
| WO2024066441A1 (en) * | 2022-09-26 | 2024-04-04 | 超聚变数字技术有限公司 | Flow control method and computing node |
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