Combined liquid cooling cabinet

Abstract

The invention relates to the field of liquid cooling servers, and particularly discloses a combined liquid cooling cabinet which is characterized by comprising a server cabinet, an outer box body and a spraying system, and the server cabinet is filled with cooling liquid; an opening is formed in the top of the outer box body, part of the server cabinet is inserted into the outer box body from the opening, and a water inlet space is formed between the server cabinet and the opening; the spraying system comprises a spraying head, the spraying head is connected with a water circulation system or an external water source, and the spraying head faces the side wall of the outer box body. According to the technical scheme, the server is firstly placed in the server cabinet and is filled with the cooling liquid to be immersed, and the cooling liquid is generally fluorinated liquid; heat of the server is absorbed by the cooling liquid and then is transmitted through the side wall of the server, cooling water sprayed by the spraying heads cools the side wall, and finally the temperature of the cooling liquid is reduced.

Description

Technical Field

[0001] The present application relates to the field of liquid cooling servers, and in particular to a combined liquid cooling cabinet. Background Art

[0002] Liquid cooling server cabinet is a device that uses liquid cooling technology to dissipate heat from the server. The following is a detailed introduction about it: Liquid cooling technology uses the high thermal conductivity of liquid to transport the liquid from the condenser to various devices in the server cabinet through a pump, absorbing the heat generated by the equipment, and then flowing back to the condenser for cooling, repeating this cycle to achieve an efficient cooling effect.

[0003] The liquid supply system is responsible for providing cooling liquid, which is generally a mixture of deionized water and ethylene glycol, fluorinated liquid, etc.; the liquid circulation system consists of pumps, pipes and heat exchangers, which brings the heat absorbed by the liquid from the server cabinet back to the cooling system for cooling; the cooling system is mainly composed of a cooling tower, a chilled water system and a heat dissipation system, which is responsible for transferring the heat in the liquid to the external environment.

[0004] Immersed liquid-cooled server cabinet: The server is completely immersed in the coolant, and the heat of all heating components is directly transferred to the coolant, and then the heat is dissipated through the circulation of the coolant or the evaporation and condensation phase change. This type of server cabinet generally requires a liquid-cooled CDU for cooling distribution, and has a complex structure. Summary of the invention

[0005] In order to improve the problem of complex cabinet structure, the present application provides a combined liquid cooling cabinet.

[0006] The combined liquid cooling cabinet provided in this application adopts the following technical solution: A combined liquid cooling cabinet, characterized in that it includes a server cabinet, an outer box and a spray system, wherein the server cabinet is filled with coolant; an opening is provided at the top of the outer box, part of the server cabinet is inserted into the outer box from the opening, and a water inlet space is provided between the server cabinet and the opening; the spray system includes a spray head, wherein the spray head is connected to a water circulation system or an external water source, and the spray head faces the side wall of the outer box.

[0007] By adopting the above technical solution, the server is first placed in the server cabinet and filled with coolant to immerse it. The coolant is generally fluorinated liquid, but can also be mineral oil, silicone liquid, dibutyl phosphate and other liquids that do not have conductive properties but have good thermal conductivity; the heat of the server is absorbed by the coolant and transferred through the side wall of the server. The cooling water sprayed by the sprinkler head cools the side wall and finally reduces the temperature of the coolant. No liquid-cooled CDU is required.

[0008] Optionally, the water circulation system includes a circulation pump and a circulation pipe, one end of the circulation pipe is connected to the outer box, and the other end is connected to the water inlet of the circulation pump, and the water outlet of the circulation pump is connected to the sprinkler head through a sprinkler pipe.

[0009] By adopting the above technical solution, if an external water source is used, it can generally be directly connected to the tap water pipe, and the water is directly discharged from the outlet of the outer box after spraying. This method causes waste of water resources. Therefore, it is selected to connect to the water circulation system. After the water spray absorbs heat, it can be dissipated through the outer box and then circulated into the spray pipe.

[0010] Optionally, an outwardly expanding splash-proof water shield is provided at the opening.

[0011] By adopting the above technical solution, since when the server has a high heat during spraying and the spraying needs to be accelerated, water will splash out after hitting the outer wall of the server cabinet, so a splash-proof water baffle is provided.

[0012] Optionally, the water circulation system is externally connected to a heat exchanger, and the heat exchanger includes at least one of a water cooling tower and an air cooling tower.

[0013] By adopting the above technical solution, since water cooling may not be achieved only by the side wall of the outer box body, an additional heat exchanger is provided. This heat exchanger can be provided on the cabinet, such as a radiator, a heat exchange tube, etc., or it can be externally connected to a large heat exchanger, such as a water cooling tower, an air cooler, etc. Since there are generally many server cabinets, all server cabinets can be connected to a water cooling tower. Of course, a combination can also be provided as needed, such as a radiator (one for each cabinet) + a water cooling tower (one for multiple cabinets).

[0014] Optionally, positioning rods are fixed on the outer box body, two positioning rods are arranged on each side, and connecting plates are provided on both sides of the server cabinet, the connecting plate is located between the two positioning rods, and a gap is arranged between the surface where the positioning rods abut the connecting plate and the inner wall of the outer box body.

[0015] By adopting the above technical solution, the setting of the positioning rod and the cooperation of the connecting plate can realize the rapid installation of the server cabinet, and the server can be directly placed in it. Moreover, since most of the server is located in the outer box, its center of gravity is low and no additional connecting parts are required. The position of the above positioning rod also needs to be set so that a gap is set between the surface where the positioning rod abuts the connecting plate and the inner side wall of the outer box, and the above gap is the gap of the water inlet space.

[0016] Optionally, a limit block is fixed below the connecting plate, and the limit block abuts against the inner wall of the outer box body.

[0017] By adopting the above technical solution, the positioning rod limits the translation of the server cabinet in one horizontal direction, and the limit block limits the translation of the server cabinet in another horizontal direction. For example, the positioning rod limits the lateral movement, and the limit block limits the longitudinal movement. The setting of the limit block allows the other two surfaces of the server cabinet to form a longitudinal gap with the inner wall of the outer box. When the heat of the server is high, the combination of semi-immersion + spraying of the server cabinet can also be adopted.

[0018] Optionally, the splash-proof water shield includes a flexible portion and a hard portion, the flexible portion is fixed to the outer box body, the hard portion is fixed to the flexible portion, and the flexible portion is magnetically connected to the outer box body.

[0019] By adopting the above technical solution, in this way, during transportation, the flexible part can be bent so that the hard part fits with the inner wall or the outer wall of the outer box.

[0020] Optionally, the outer box has a first interface and a second interface. When multiple interfaces are provided, the first interface and the second interface may be directly or indirectly connected.

[0021] By setting the first interface and the second interface, a plurality of cabinets can be used in combination, and the first interface and the second interface can be directly or indirectly connected according to the structural design.

[0022] Optionally, the water circulation box includes a water storage tank, the water storage tank is connected to the circulation pipe through a water outlet pipe, a three-way solenoid valve is arranged at the connection between the water outlet pipe and the circulation pipe, the circulation pipe includes a first pipe and a second pipe, and three interfaces of the three-way solenoid valve are respectively connected to the first pipe, the second pipe and the water outlet pipe; the first pipe is connected to the water outlet of the outer box body, and the second pipe is connected to the water inlet of the outer box body; two circulation pumps are arranged, which are respectively located on the first pipe and the second pipe. A liquid level sensor and a temperature sensor are arranged in the server cabinet, and the combined liquid cooling cabinet also includes a controller.

[0023] By adopting the above technical solution, two circulation pumps are preferably set up, which have sufficient power and can control the spraying speed as needed. The equipment has high stability, and even if one of the circulation pumps stops working, it will not affect its short-term work. In this solution, two circulation pumps are set up mainly for use with the three-way solenoid valve. During normal circulation, generally only one of the circulation pumps works, and the first pipeline and the second pipeline are connected. When it is necessary to immerse the server, temporarily control the three-way valve to connect the water outlet pipe and the second pipeline, turn off the circulation pump on the first pipeline, and turn on the circulation pump on the second pipeline, so that water can be quickly replenished from the water storage tank to the outer box. At this time, due to the switching of the three-way valve, the water in the outer box will not flow out from the first pipeline. When drainage is required (when the server cabinet is overhauled), switch the three-way valve to connect the first pipeline and the water outlet pipe, turn off the circulation pump on the second pipeline, turn on the circulation pump on the first pipeline, and the water in the outer box enters the water storage tank from the first pipeline, but not the second pipeline.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. This solution uses a combination of spraying and immersion to achieve rapid cooling of the server; 2. The material of the pipes connected to the outer box (such as circulation pipes, water outlet pipes, etc.) is not limited; 3. Setting the first interface and the second interface enables the combined use of multiple cabinets; 4. When dual-pump spraying is set, the spraying speed can be controlled according to the temperature of the server. The equipment works stably and can maintain operation even if one of them is damaged; 5. Rapid placement can be achieved through positioning rods and limit blocks. The server cabinet can be quickly assembled by placement, and bolts can be properly connected to ensure reliable connection; 6. Anti-splash water retaining parts ensure a clean working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the cross-sectional structure along the diagram; Figure 3 It is a structural diagram of a server cabinet; Figure 4 It is a structural schematic diagram of the outer box; Figure 5 It is a structural schematic diagram of Example 2.

[0026] Figure numerals: 1. server cabinet; 2. outer box body; 3. opening; 4. horizontal gap; 5. longitudinal gap; 6. positioning rod; 7. connecting plate; 8. U-shaped handle; 9. spray head; 10. heat exchanger; 11. flexible part; 12. hard part; 13. semicircular groove; 14. circulation pump; 15. spray pipe; 16. auxiliary baffle; 17. water storage tank; 18. water outlet pipe; 19. three-way solenoid valve; 20. first pipeline; 21. second pipeline; 22. liquid level sensor; 23. temperature sensor; 24. limit block. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-5 This application is described in further detail.

[0028] Embodiment 1: A combined liquid cooling cabinet, comprising a server cabinet 1, an outer box 2 and a spray system, wherein the server cabinet 1 is filled with cooling liquid. The outer box 2 and the server cabinet 1 are both hollow rectangular boxes.

[0029] An opening 3 is provided at the top of the outer box 2, and part of the server cabinet 1 is inserted into the outer box 2 from the opening 3, and a water inlet space is provided between the server cabinet 1 and the opening 3. Specifically, the top view area of ​​the opening 3 is larger than the top view area of ​​the server cabinet 1, so that gaps are provided between the four side walls of the server cabinet 1 and the four inner walls of the outer box 2. The gaps formed between the two larger side surfaces of the server cabinet 1 and the inner walls of the outer box 2 are gaps of the water inlet space, which can also be defined as a horizontal gap 4, and the gaps formed between the other two side surfaces and the inner walls of the outer box 2 are longitudinal gaps 5.

[0030] The outer box body 2 is fixed with positioning rods 6, and two positioning rods 6 are arranged on each side. The server cabinet 1 has connecting plates 7 on both sides, and the connecting plates 7 are located between the two positioning rods 6. A gap is set between the surface where the positioning rods 6 and the connecting plates 7 abut against the inner wall of the outer box body 2, and the gap here is a transverse gap 4. A limit block 24 is fixed below the connecting plate 7, and the limit block 24 abuts against the inner wall of the outer box body 2. In this way, it is ensured that the server cabinet 1 will not move horizontally and vertically, and the vertical direction can be maintained by its own weight. Of course, for the sake of safety, bolts can be passed through the connecting plates 7 to be threadedly connected to the outer box body 2, but bolts are generally not required. In order to facilitate the removal of the server cabinet 1, U-shaped handles 8 are also fixed on both sides of the server cabinet 1.

[0031] The spray system includes a spray head 9, which is connected to a water circulation system or an external water source, and faces the side wall of the outer box 2. If an external water source is used, it can generally be directly connected to a tap water pipe, and the water is directly discharged from the outlet of the outer box 2 after spraying. This method wastes water resources. Therefore, it is selected to connect to a water circulation system, and the water can be dissipated through the outer box 2 after absorbing heat through spraying and then circulated into the spray pipe 15.

[0032] The water circulation system includes a circulation pump 14 and a circulation pipe. One end of the circulation pipe is connected to the outer box 2 , and the other end is connected to the water inlet of the circulation pump 14 . The water outlet of the circulation pump 14 is connected to the spray head 9 through the spray pipe 15 .

[0033] The water circulation system is externally connected to a heat exchanger 10. The heat exchanger 10 includes at least one of a water cooling tower and an air cooling tower. Since water cooling may not necessarily be achieved only through the side wall of the outer box body 2, an additional heat exchanger 10 is provided. This heat exchanger 10 can be provided on the cabinet, such as a radiator, a heat exchange pipe, etc., or it can be externally connected to a large heat exchanger 10, such as a water cooling tower, an air cooler, etc. Since there are generally many server cabinets 1, all server cabinets 1 can be externally connected to a water cooling tower. Of course, a combination type can also be provided as needed, such as a radiator (one for each cabinet) + a water cooling tower (multiple cabinets share one) An outwardly expanded splash-proof water shield is provided at the opening 3. The splash-proof water shield includes a flexible portion 11 and a hard portion 12, wherein the flexible portion 11 is fixed to the outer box body 2, the hard portion 12 is fixed to the flexible portion 11, and the flexible portion 11 is magnetically connected to the outer box body 2. The hard portion 12 can be plastic, the flexible portion 11 can be a soft magnetic strip, and iron sheets are provided at the positions of the positioning rod 6 and the outer box body 2 corresponding to the soft magnetic strip. Or the entire outer box body 2 is made of stainless steel or other materials that can be adsorbed by magnets. During transportation, the flexible portion 11 can be bent so that the hard portion 12 fits the outer wall of the outer box body 2. When in use, the flexible portion 11 fits the side wall of the positioning rod 6. The top of the positioning rod 6 has a semicircular groove 13 for carrying a spray pipe 15. An auxiliary baffle 16 is also provided at the junction of the server cabinet 1 and the connecting plate 7, and the auxiliary baffle 16 is used to block the gap between the server cabinet 1 and the positioning rod 6. As a preferred mode, the positioning rod 6 is preferably configured to be retractable, such as the handle structure of an umbrella.

[0034] Embodiment 2: A combined liquid cooling cabinet, based on embodiment 1, the water circulation system further includes a water storage tank 17, the water storage tank 17 is connected to the circulation pipe through the water outlet pipe 18, a three-way solenoid valve 19 is arranged at the connection between the water outlet pipe 18 and the circulation pipe, the circulation pipe includes a first pipe 20 and a second pipe 21, the three interfaces of the three-way solenoid valve 19 are respectively connected to the first pipe 20, the second pipe 21 and the water outlet pipe 18; the first pipe 20 is connected to the water outlet of the outer box 2, and the second pipe 21 is connected to the water inlet of the outer box 2; two circulation pumps 14 are arranged, respectively located on the first pipe 20 and the second pipe 21; a liquid level sensor 22 and a temperature sensor 23 are arranged in the server cabinet 1, and the combined liquid cooling cabinet further includes a controller. A liquid level sensor 22 is also arranged in the outer box 2.

[0035] The implementation principle of a combined liquid cooling cabinet in the embodiment of the present application is as follows: during normal operation, one of the circulation pumps 14 on the first pipe 20 or the second pipe 21 is started, the first pipe 20 and the second pipe 21 are connected, and the outlet pipe 18 is disconnected. The server cabinet 1 will be partially immersed, for example, 30% of the volume will be immersed. When the temperature sensor 23 detects that the temperature of the server cabinet 1 rises to the set value, the two circulation pumps 14 are started together to accelerate the spraying speed.

[0036] When the server needs to be immersed more (for example, 60% of the volume), the three-way solenoid valve 19 is temporarily controlled to connect the water outlet pipe 18 with the second pipe 21, the circulation pump 14 on the first pipe 20 is turned off, and the circulation pump 14 on the second pipe 21 is turned on, so that water is quickly replenished from the water tank 17 to the outer box 2. At this time, due to the switching of the three-way solenoid valve 19, the water in the outer box 2 will not flow out of the first pipe 20. When the set value is reached, the first pipe 20 and the second pipe 21 are switched back to connect.

[0037] When drainage is required (when the server cabinet 1 is under maintenance or leakage occurs, the liquid level sensor 22 in the server cabinet 1 detects that the liquid level is lower than the set value), the three-way solenoid valve 19 is switched to connect the first pipe 20 and the outlet pipe 18, the circulation pump 14 on the second pipe 21 is closed, and the circulation pump 14 on the first pipe 20 is opened, and the water in the outer box 2 enters the water storage tank 17 from the first pipe 20, and does not enter the second pipe 21.

[0038] The outer box body 2 has a first interface and a second interface. When multiple interfaces are provided, the first interface and the second interface can be directly or indirectly connected. By providing the first interface and the second interface, the combined use of multiple cabinets can be realized. The first interface and the second interface are directly or indirectly connected according to the structural design. This embodiment is illustrated by way of example. For example, the first interface and the second interface are both external thread interfaces, and the connecting piece adopts an internal thread sleeve. When the internal thread sleeve is connected to the first interface and the second interface at the same time, the first interface and the second interface are connected. It can also be carried out by hot melt connection or welding. It can also be carried out by flange connection. A flange ring is fixed at each of the first interface and the second interface, a sealing ring is provided between the two flange rings, and a bolt and nut assembly connects the two flange rings. The first interface and the second interface are thread-sealed by a sealing cover when not in use.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A combined liquid cooling cabinet, characterized in that: It includes a server cabinet, an outer box and a spray system, wherein the server cabinet is filled with coolant; an opening is provided at the top of the outer box, part of the server cabinet is inserted into the outer box from the opening, and a water inlet space is provided between the server cabinet and the opening; the spray system includes a spray head, wherein the spray head is connected to a water circulation system or an external water source, and the spray head faces the side wall of the outer box.

2. The combined liquid cooling cabinet according to claim 1, characterized in that: The water circulation system comprises a circulation pump and a circulation pipe. One end of the circulation pipe is connected to the outer box, and the other end is connected to the water inlet of the circulation pump. The water outlet of the circulation pump is connected to the spray head through a spray pipe.

3. The combined liquid cooling cabinet according to claim 1, characterized in that: The opening is provided with an outwardly expanding anti-splash water blocking member.

4. The combined liquid cooling cabinet according to claim 1, characterized in that: The water circulation system is externally connected with a heat exchanger.

5. The combined liquid cooling cabinet according to claim 4, characterized in that: The heat exchanger includes at least one of a water cooling tower and an air cooling tower.

6. The combined liquid cooling cabinet according to claim 1, characterized in that: Positioning rods are fixed on the outer box body, and two positioning rods are arranged on each side. Both sides of the server cabinet have connecting plates, and the connecting plates are located between the two positioning rods. A gap is arranged between the surfaces where the positioning rods abut against the connecting plates and the inner wall of the outer box body.

7. The combined liquid cooling cabinet according to claim 6, characterized in that: A limiting block is fixed below the connecting plate, and the limiting block abuts against the inner wall of the outer box body.

8. The combined liquid cooling cabinet according to claim 3, characterized in that: The splash-proof water shielding member comprises a flexible part and a hard part, wherein the flexible part is fixed to the outer box body, the hard part is fixed to the flexible part, and the flexible part is magnetically connected to the outer box body.

9. The combined liquid cooling cabinet according to claim 1, characterized in that: The outer box has a first interface and a second interface. When multiple interfaces are provided, the first interface and the second interface can be directly or indirectly connected.

10. The combined liquid cooling cabinet according to claim 2, characterized in that: The water circulation box includes a water storage tank, which is connected to the circulation pipe through a water outlet pipe. A three-way solenoid valve is arranged at the connection between the water outlet pipe and the circulation pipe. The circulation pipe includes a first pipe and a second pipe. The three interfaces of the three-way solenoid valve are respectively connected to the first pipe, the second pipe and the water outlet pipe; the first pipe is connected to the water outlet of the outer box body, and the second pipe is connected to the water inlet of the outer box body; two circulation pumps are arranged, which are respectively located on the first pipe and the second pipe; a liquid level sensor and a temperature sensor are arranged in the server cabinet, and the combined liquid cooling cabinet also includes a controller.

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