Immersed liquid cooling system

Abstract

The invention belongs to the technical field of immersed liquid cooling, and discloses an immersed liquid cooling system which comprises a cooling box body, a cooling liquid circulation pipeline is further arranged in the cooling box body, and the cooling liquid circulation pipeline extends to the outer side of the cooling box body; the outdoor unit heat dissipation unit comprises a heat dissipation device body, and the cooling liquid circulation pipelines communicate with the heat dissipation device body to achieve cooling liquid circulation; the control system controls operation between the cooling box unit and the outdoor unit heat dissipation unit. The to-be-cooled element is completely immersed in the insulating cooling liquid and is completely isolated from air and moisture, so that the service life of the to-be-cooled element is prolonged, and the replacement cost of the to-be-cooled element is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of immersion liquid cooling, and in particular to an immersion liquid cooling system. Background Art

[0002] Most existing immersion liquid cooling systems are single-phase immersion. The liquid remains in liquid form and transfers heat to an external heat exchanger through natural convection or pump-driven circulation. However, the heat dissipation efficiency of the external heat exchanger is limited, and the temperature is insufficient under high load, resulting in a rapid rise in the coolant temperature and poor heat dissipation effect. Summary of the Invention

[0003] In order to solve the above technical problems, an immersion liquid cooling system is provided to solve the problems of insufficient cooling efficiency of the coolant and low cooling redundancy of the external unit under high power conditions.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is: an immersion liquid cooling system, comprising:

[0005] The cooling box unit includes a cooling box body, a cooling liquid circulation pipeline is provided inside the cooling box body, and the cooling liquid circulation pipeline extends to the outside of the cooling box body;

[0006] The external heat dissipation unit includes a radiator body, and the coolant circulation pipelines are all connected to the radiator body to realize coolant circulation;

[0007] Control system, controls the operation between the cooling box unit and the outdoor unit heat dissipation unit.

[0008] According to the present invention, further, the cooling box body has a placement cavity for placing the element to be cooled; the cooling box body is also provided with a circulation pump, which is connected to the radiator body through a circulation pipeline to form a coolant circulation.

[0009] According to the present invention, further, the cooling box body is a vertical frame structure, a plurality of independent accommodating units are arranged in the vertical direction inside the cooling box body, and a drawer-type accommodating cabinet for immersing the electronic components to be cooled is slidably connected to each accommodating unit.

[0010] According to the present invention, further, a circulation pump is provided on the cooling box body, and one end of a circulation pipeline of the circulation pump is connected to a corresponding interface of each drawer-type storage cabinet through a quick sealing joint.

[0011] According to the present invention, further, the circulation pipeline includes a liquid inlet pipeline and a liquid outlet pipeline connected to the circulation pump, and one end of the liquid inlet pipeline and the liquid outlet pipeline extends to communicate with the radiator body.

[0012] According to the present invention, further, the radiator body is also provided with a heat dissipation structure and a secondary cooling structure.

[0013] According to the present invention, further, the heat dissipation structure includes at least one fan.

[0014] According to the present invention, further, the secondary cooling structure is a spray pipe, one end of which is connected to an external water source, and the spray pipe is arranged horizontally, and an atomizing nozzle is arranged thereon.

[0015] According to the present invention, further, there are multiple atomizing nozzles, which are arranged at equal intervals along the length direction of the spray pipe.

[0016] According to the present invention, further, the radiator body temperature threshold is set: first-level start-up, 50% fan power is turned on; second-level start-up: the spray pipe and 100% fan power are turned on at the same time, and the fan start-up power is adjusted according to the set temperature.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention completely immerses the component to be cooled in the insulating coolant, completely isolating it from air and moisture, thereby improving the safety of the component to be cooled; the coolant has higher thermal conductivity and specific heat capacity, and can quickly and fully absorb and conduct the heat generated by the component to be cooled, so as to directly, quickly and fully cool the component to be cooled, ensure that the component to be cooled operates within the optimal temperature range, extend the service life of the component to be cooled, and reduce the replacement cost of the component to be cooled.

[0019] The drawer-type structure of this invention allows individual storage units containing electronic components (servers / battery packs) to be independently hot-swapped without draining the entire system or shutting down, greatly improving maintenance efficiency. Furthermore, the vertical cabinet saves space, and the drawer-type design optimizes space utilization.

[0020] The radiator body of the present invention adopts dual-mode heat dissipation of air cooling combined with spray evaporation heat dissipation, spray water film evaporation heat absorption combined with fan forced air cooling. Especially at high temperature or peak load, spraying can greatly improve the heat dissipation efficiency to cope with extreme working conditions.

[0021] The control system of the present invention intelligently adjusts the fan speed and the start and stop of the spraying according to the temperature, realizes heat dissipation on demand, and effectively reduces operating energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a cooling box unit from a first perspective in Example 1 of the present invention;

[0023] Figure 2 This is a schematic structural diagram of the cooling box unit from a second perspective in Example 1 of the present invention;

[0024] Figure 3Schematic diagram of the structure of the cooling box unit in Example 2 of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the interior of the cooling box unit in Example 2 of the present invention from a first perspective;

[0026] Figure 5 A schematic structural diagram of the interior of the cooling box unit in Example 2 of the present invention from a second perspective;

[0027] Figure 6 This is a schematic structural diagram of the interior of the cooling box unit in Example 2 of the present invention from a third perspective;

[0028] Figure 7 This is a schematic structural diagram of the external heat dissipation unit of the present invention from a first perspective;

[0029] Figure 8 It is a structural schematic diagram of the external heat dissipation unit of the present invention from a second perspective.

[0030] Figure markings: 100-cooling box unit, 110-cooling box body, 111-placing cavity, 112-circulating pump, 1121-liquid inlet pipeline, 1122-liquid outlet pipeline, 113-accommodation unit, 114-slide rail, 120-drawer-type accommodation cabinet, 121-positioning groove, 200-external unit heat dissipation unit, 210-radiator body, 211-fan group, 220-spray pipe. DETAILED DESCRIPTION

[0031] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0032] like Figures 1 to 8 As shown, the present embodiment discloses an immersion liquid cooling system, comprising a cooling box unit 100, an external heat dissipation unit 200 connected thereto via a circulation pipeline, and a control system. An element to be cooled is placed within the cooling box unit 100, and a circulation pipeline is provided between the cooling box unit 100 and the external heat dissipation unit 200 to supply coolant to the cooling box unit 100, thereby reducing the temperature of the element to be cooled within the cooling box unit 100. The control system, which controls the operation between the cooling box unit and the external heat dissipation unit, is conventional technology and will not be further described here.

[0033] The outer machine heat dissipation unit 200 comprises a heat radiator body 210, one side surface of the heat radiator body 210 is provided with a fan group 211, and the other side of the heat radiator body 210 is provided with a spraying pipe 220, one end of the spraying pipe 220 is connected with a water supply end, and the spraying pipe 220 sprays water source to the heat radiator body 210 to accelerate cooling. The spraying pipe 220 can be horizontally arranged or vertically arranged, a plurality of atomizing nozzles are arranged at equal intervals along the length direction of the spraying pipe 220, the spraying range is increased, and the cooling speed is improved.

[0034] Embodiment 1

[0035] In the embodiment of the present application, the cooling box unit 100 comprises a cooling box body 110, the cooling box body 110 is internally provided with a placing cavity 111 for placing an electronic element to be cooled, and a circulating pump 112 is further arranged in the cooling box body 110. The circulating pump 112 is connected with an inlet liquid pipeline 1121 and an outlet liquid pipeline 1122, both of which extend to the outside of the cooling box body 110 and are communicated with the heat radiator body 210, so as to form a cooling liquid circulation. The cooled liquid is injected into the cooling box body 110 to cool the electronic element, the liquid with increased temperature is discharged to the heat radiator body 210 through the outlet liquid pipeline 1122, and then is circulated to the inlet liquid pipeline 1121 after being cooled by the heat radiator body 210, so as to realize the cooling circulation and reuse of the cooling liquid, and improve the refrigeration effect of the cooling box body 110. The electronic element to be cooled can be a battery or a server.

[0036] Specifically, the cooling box body 110 is formed by welding a steel plate into a vertical or horizontal cuboid, and the placing cavity 111 accommodates a server to be cooled. The cooling liquid is a hydrocarbon compound with a boiling point of >330℃. A plurality of atomizing nozzles are arranged at intervals on the spraying pipe 220.

[0037] Embodiment 2

[0038] The cooling box body 110 is a vertical frame structure, and a plurality of independent accommodating units 113 are arranged in the cooling box body 110 in the vertical direction. An inner side wall of each accommodating unit 113 is fixedly provided with a sliding rail 114, and a drawer-type accommodating cabinet 120 for placing an electronic element (such as a server node or a battery pack) to be cooled is slidably connected to the sliding rail 114 in each accommodating unit 113. The drawer-type accommodating cabinet 120 can be completely pulled out or pushed into the cabinet body 100 along the sliding rail 114.

[0039] The drawer-type accommodating cabinet 120 itself constitutes an independent sealed cooling box, an internal placing cavity is formed in the drawer-type accommodating cabinet 120 for immersing and placing an electronic element to be cooled, and the placing cavity is filled with an insulating cooling liquid. Preferably, the insulating cooling liquid is a hydrocarbon compound with a boiling point of >330℃.

[0040] The cooling box body 110 is equipped with a circulation pump 112, connected to which are a liquid inlet pipe 1121 and a liquid outlet pipe 1122. These pipes connect to corresponding ports on each drawer-type storage cabinet 120 via quick-seal connectors. When the drawer-type storage cabinet 120 is pushed into place, the quick-seal connectors connect. The pipe design must accommodate the pull-out and retraction of the drawer-type storage cabinet 120. The liquid inlet pipe 1121 and the liquid outlet pipe 1122 extend outside the cooling box body 110 and connect to the radiator body 210.

[0041] The radiator body 210 is located outside the cooling box body 110 , such as on the top, side or independently, and is connected to the circulation system of all drawer-type storage cabinets 120 inside the cooling box body 110 through the liquid inlet pipe 1121 and the liquid outlet pipe 1122 .

[0042] Example 3

[0043] On the basis of the embodiment 2, a positioning groove 121 is formed on the bottom plate of the drawer-type storage cabinet 120 for fixing the electronic components to be cooled.

[0044] Example 4

[0045] Based on Examples 1 and 2, the radiator body 210 utilizes aluminum finned tubes with a surface area ≥ 8 m2 / kW. Temperature threshold settings include: Level 1 activation, which activates 50% fan power; Level 2 activation, which activates both the sprinkler pipes and 100% fan power. The temperature threshold can be freely set, and the fan speed automatically adjusts based on the temperature to reduce the PUE.

[0046] A fan assembly 211 is installed on one side of the radiator body 210. A spray pipe 220 is installed on the other side of the radiator body 210. One end of the spray pipe 220 is connected to the water supply, spraying water onto the radiator body 210 to accelerate cooling. The spray pipe 220 can be arranged horizontally or vertically, with multiple atomizing nozzles equidistantly positioned along its length to expand the spray range and increase the cooling rate. The fan assembly 211 can also be equipped with a single fan, depending on the cooling requirements.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An immersion liquid cooling system, characterized in that: include, The cooling box unit includes a cooling box body, a cooling liquid circulation pipeline is provided inside the cooling box body, and the cooling liquid circulation pipeline extends to the outside of the cooling box body; The external heat dissipation unit includes a radiator body, and the coolant circulation pipelines are all connected to the radiator body to realize coolant circulation; Control system, controls the operation between the cooling box unit and the outdoor unit heat dissipation unit.

2. The immersion liquid cooling system according to claim 1, wherein: The cooling box body is provided with a placement cavity for placing the element to be cooled; the cooling box body is also provided with a circulation pump, which is connected to the radiator body through a circulation pipeline to form a coolant circulation.

3. The immersion liquid cooling system according to claim 1, wherein: The cooling box body is a vertical frame structure, and a plurality of independent accommodating units are arranged in the vertical direction inside the cooling box. A drawer-type accommodating cabinet for immersing and placing electronic components to be cooled is slidably connected to each accommodating unit.

4. The immersion liquid cooling system according to claim 3, wherein: The cooling box body is provided with a circulation pump, and one end of the circulation pipeline of the circulation pump is connected to the corresponding interface of each drawer-type storage cabinet through a quick sealing joint.

5. An immersion liquid cooling system according to any one of claims 1 to 3, characterized in that: The circulation pipeline includes a liquid inlet pipeline and a liquid outlet pipeline connected to the circulation pump, and one end of the liquid inlet pipeline and the liquid outlet pipeline extends to communicate with the radiator body.

6. An immersion liquid cooling system according to any one of claims 1 to 3, characterized in that: The radiator body is also provided with a heat dissipation structure and a secondary cooling structure.

7. The immersion liquid cooling system according to claim 6, characterized in that: The heat dissipation structure includes at least one fan.

8. The immersion liquid cooling system according to claim 6, wherein: The secondary cooling structure is a spray pipe, one end of which is connected to an external water source. The spray pipe is arranged horizontally and an atomizing nozzle is arranged on it.

9. The immersion liquid cooling system according to claim 8, wherein: There are multiple atomizing nozzles, which are arranged at equal intervals along the length direction of the spray pipe.

10. The immersion liquid cooling system according to claim 7, characterized in that: The radiator body temperature threshold setting is: level one start, 50% fan power is turned on; level two start: the spray pipe and 100% fan power are turned on at the same time, and the fan power is adjusted according to the set temperature.

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