Immersion cooling system for high-efficiency cooling through active valve control and method for controlling same

Abstract

The present invention relates to an immersion cooling system for high-efficiency cooling through active valve control and a method for controlling same, wherein immersion cooling oil inlet and outlet valves are actively controlled to improve the cooling efficiency in accordance with circulation of the immersion cooling oil. The present invention comprises an immersion cooling tank (110) having a containing space into which immersion cooling oil can be introduced, having a first upper connection hose (102) and a second upper connection hose (104) installed on one side of the upper portion thereof at an interval so as to communicate with the containing space, and having a first lower connection hose (106) and a second lower connection hose (108) installed on one side of the lower portion thereof at an interval so as to communicate with the containing space. The present invention comprises a server unit (114) detachably positioned on one side of the containing space of the immersion cooling tank (110) and having a control unit (112) installed therein. The present invention comprises a temperature measurement unit (116) installed on one side of the server unit (114) at an interval from the control unit (112) and electrically connected to the control unit (112) to measure the temperature of immersion cooling oil introduced into the containing space according to control signals from the control unit (112).

Description

Liquid immersion cooling system for high-efficiency cooling through active valve control and control method thereof

[0001] The present invention relates to an immersion cooling system, and more specifically, to a high-efficiency immersion cooling system and a control method thereof through active valve control that improves cooling efficiency according to the circulation of immersion cooling oil by actively controlling the inlet and outlet valves of the immersion cooling oil.

[0002] In particular, the present invention relates to a high-efficiency immersion cooling system and a control method thereof through active valve control that improves cooling efficiency by utilizing laminar and turbulent flow of the immersion cooling oil.

[0003] Immersion cooling is a technology that uses liquid to cool electronic devices such as servers. Instead of traditional air cooling methods, more effective heat dissipation and energy efficiency can be achieved by immersing servers or data center equipment in insulating fluid. This technology is particularly useful in high-performance computing or large-scale data centers and is a field receiving increasing attention due to the recent rise in demands for improved energy efficiency and sustainability in data centers.

[0004] Conventional air cooling methods rely on numerous fans or air conditioners to dissipate heat within large servers; however, this approach is inefficient in large-scale data centers, and adequate thermal management becomes difficult with air cooling as server density increases. Furthermore, air cooling requires relatively large spaces and high power consumption. In contrast, immersion cooling utilizes insulating liquids with much higher heat transfer efficiency than air, allowing it to effectively absorb more heat while using less energy. Particularly in high-density server environments, it enables heat control with significantly less space and resources than air cooling, drastically reducing energy consumption and lowering the costs associated with fans and air circulation systems. Consequently, overall power consumption decreases, leading to reduced operating costs. Unlike traditional air cooling, immersion cooling systems absorb heat by directly submerging server hardware in cooling fluid. The heat-absorbing fluid is then released externally to remove heat via heat exchangers before being recirculated.

[0005] The above-mentioned immersion cooling technology was filed with the Korean Intellectual Property Office on May 25, 2020, under Application No. 10-2020-0062016 (Title of Invention: Centralized Immersion Cooling System). Referring to FIG. 1, the claims are as follows: "A stacking rack is installed on which a plurality of heating units subject to forced cooling are stacked in a spaced-apart state, and a plurality of cooling chambers each have a sealed internal space capable of filling with cooling liquid so that all heating units are submerged, and each chamber is equipped with a temperature sensor; a plurality of branch drainage pipes, each connected to one of the cooling chambers to discharge a portion of the cooling liquid and each having a flow control valve; an integrated transfer pipe equipped with a circulation pump that collects the cooling liquid discharged through the branch drainage pipes and transfers it to a location spaced apart from the cooling chambers; a heat exchange module that cools the cooling liquid passing through the integrated transfer pipe; and the cooling liquid cooled in the heat exchange module is discharged and the A centralized liquid immersion cooling system comprising: an integrated return pipe equipped with a circulation pump for transferring the cooling liquid near a cooling chamber; a plurality of branch injection pipes, each equipped with a flow control valve for injecting the cooling liquid transferred through the integrated return pipe back into the cooling chamber; and a control unit that independently controls the discharge and injection amounts of the cooling liquid for the cooling chamber by controlling the circulation pumps installed in the integrated transfer pipe and the integrated return pipe, and the valves installed in the branch drain pipe and the branch injection pipe, respectively, according to the temperature of the cooling liquid detected by a temperature sensor installed in the cooling chamber; wherein the heating unit stored in the cooling chamber is one or more of a server, storage, a network switch, or a battery of an energy storage system (ESS), and the cooling liquid is FK (fluoro ketone).

[0006] As examined above, research and development regarding immersion cooling systems are currently being steadily carried out.

[0007] The applicant intends to propose a high-efficiency immersion cooling system and a control method thereof through active valve control, which significantly improves cooling performance by more efficiently removing more heat through more active and effective control of the circulation of the immersion cooling oil.

[0008] Accordingly, the present invention is an improved invention designed to solve the various problems associated with the aforementioned prior art. The objective of the present invention is to provide a high-efficiency immersion cooling system and a control method thereof through active valve control, which improves cooling efficiency through the circulation of immersion cooling oil by actively controlling the inlet and outlet valves of the immersion cooling oil.

[0009] However, the purpose of the present invention is not limited to the purposes mentioned above, and other unmentioned purposes will be clearly understood by those skilled in the art from the description below.

[0010] A liquid immersion cooling system for high-efficiency cooling through active valve control according to the present invention for achieving the above-mentioned purpose is,

[0011] A liquid immersion cooling tank (110) having a receiving space in which liquid immersion cooling oil can be introduced, wherein a first upper connecting hose (102) and a second upper connecting hose (104) connected to the receiving space at a certain distance from one side of the upper portion, and a first lower connecting hose (106) and a second lower connecting hose (108) connected to the receiving space at a certain distance from one side of the lower portion, are installed;

[0012] A server unit (114) that is detachably positioned on one side of the receiving space of the above-mentioned liquid immersion cooling tank (110) and has a control unit (112) installed therein;

[0013] It includes a temperature measuring unit (116) installed on one side of the server unit (114) at a certain interval from the control unit (112), electrically connected to the control unit (112), and measuring the temperature of the liquid immersion cooling oil introduced into the receiving space according to the control signal of the control unit (112).

[0014]

[0015] And, a control method for a liquid immersion cooling system with high-efficiency cooling through active valve control according to the present invention for achieving the above-mentioned purpose is,

[0016] A first step of measuring the temperature of the liquid immersion cooling oil according to the control signal of the control unit (112) and sending the measured temperature value to the control unit (112);

[0017] After the first step above, the control unit (112) compares the measured temperature value with the set threshold temperature value, and if the measured temperature value is higher than the set threshold temperature value (i.e., considered as turbulence-based liquid immersion cooling oil circulation), sends a control signal to the first, second, and third valves of the first 3-way valve (122), to the fourth, fifth, and sixth valves of the second 3-way valve (124), to the eighth and tenth valves of the 4-way valve (130), to the first suction motor, to the second suction motor, and to the heat exchanger (132); and a second step;

[0018] After the second step above, the fourth, fifth, and sixth valves of the second 3-way valve (124) start operation according to a control signal from the control unit (112) to send liquid immersion cooling oil to the lower hose (120), and the eighth valve of the 4-way valve (130) starts operation according to a control signal from the control unit (112) to send the liquid immersion cooling oil discharged from the lower hose (120) to the outlet (126), in a third step;

[0019] After the above third step, the first suction motor starts operation according to the control signal of the control unit (112), sucks in the liquid immersion cooling oil sent to the outlet (126), and sends the sucked liquid immersion cooling oil to the heat exchanger (132), in the fourth step;

[0020] After the above fourth step, the heat exchanger (132) starts operation according to the control signal of the control unit (112) to heat exchange the liquid immersion cooling oil sent from the outlet (126) to cool it, and sends the cooled liquid immersion cooling oil to the inlet (128), in the fifth step;

[0021] After the above 5th step, the 2nd suction motor starts operation according to the control signal of the control unit (112) to suck in the liquid immersion cooling oil sent to the inlet (128) and quickly sends the sucked liquid immersion cooling oil to the 8th pipe, the 10th valve of the 4-way valve (130) starts operation according to the control signal of the control unit (112) to send the liquid immersion cooling oil sent from the 8th pipe through the inlet (128) to the upper hose (118), and the 1st valve, 2nd valve and 3rd valve of the 1st 3-way valve (122) start operation according to the control signal of the control unit (112) to send the liquid immersion cooling oil sent from the upper hose (118) to the liquid immersion cooling tank (100), and the 6th step includes

[0022] As described above, the liquid immersion cooling system for high-efficiency cooling through active valve control and the control method thereof according to the present invention have the effect of improving cooling efficiency through the circulation of liquid immersion cooling oil by actively controlling the inlet and outlet valves of the liquid immersion cooling oil.

[0023] In particular, the present invention provides an effective method for stably lowering the temperature of an immersion cooling oil in response to a rapid temperature rise by utilizing laminar and turbulent flow of the immersion cooling oil, and at the same time, has the effect of increasing the cooling efficiency of the immersion cooling system.

[0024] FIG. 1 is a drawing showing a centralized liquid immersion cooling system according to the prior art.

[0025] FIG. 2 is a diagram showing a liquid immersion cooling system for high-efficiency cooling through active valve control according to the present invention.

[0026] FIG. 3 is a drawing showing an immersion cooling tank of a high-efficiency cooling immersion cooling system through active valve control of FIG. 2.

[0027] FIG. 4 is a valve control structure diagram of a liquid immersion cooling system for high-efficiency cooling through active valve control of FIG. 2.

[0028] Figure 5 is an operation flowchart of a liquid immersion cooling system for high-efficiency cooling through active valve control of Figure 2.

[0029] Hereinafter, a preferred embodiment of a liquid immersion cooling system for high-efficiency cooling through active valve control and a control method thereof according to the present invention will be described.

[0030] In the following description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description will be omitted.

[0031]

[0032] FIG. 2 is a drawing showing a liquid immersion cooling system for high-efficiency cooling through active valve control according to the present invention, FIG. 3 is a drawing showing a liquid immersion cooling tank of the liquid immersion cooling system for high-efficiency cooling through active valve control of FIG. 2, and FIG. 4 is a diagram of the valve control structure of the liquid immersion cooling system for high-efficiency cooling through active valve control of FIG. 2.

[0033]

[0034] As illustrated in FIGS. 2 to 4, the liquid immersion cooling system (100) for high-efficiency cooling through active valve control according to the present invention is,

[0035] A liquid immersion cooling tank (110) having a receiving space in which liquid immersion cooling oil can be introduced, wherein a first upper connecting hose (102) and a second upper connecting hose (104) connected to the receiving space at a certain distance from one side of the upper portion, and a first lower connecting hose (106) and a second lower connecting hose (108) connected to the receiving space at a certain distance from one side of the lower portion, are installed;

[0036] A server unit (114) that is detachably positioned on one side of the receiving space of the above-mentioned liquid immersion cooling tank (110) and has a control unit (112) installed therein;

[0037] A temperature measuring unit (116) installed on one side of the server unit (114) at a certain interval from the control unit (112), electrically connected to the control unit (112) to measure the temperature of the liquid immersion cooling oil introduced into the receiving space according to the control signal of the control unit (112);

[0038] An upper hose (118) positioned at a certain distance from the above-mentioned liquid immersion cooling tank (110);

[0039] A lower hose (120) positioned at a certain distance from the upper hose (118);

[0040] A first 3-way valve (122) having a first valve, a second valve, and a third valve, connected to one side of the first upper connecting hose (102), one side of the second upper connecting hose (104), and one side of the upper hose (118), and electrically connected to a control unit (112) so that the first valve, the second valve, and the third valve turn on or off according to a control signal from the control unit (112);

[0041] A second 3-way valve (124) having a fourth valve, a fifth valve, and a sixth valve, connected to one side of the first lower connecting hose (106), one side of the second lower connecting hose (108), and one side of the lower hose (120), and electrically connected to a control unit (112) so that the fourth valve, the fifth valve, and the sixth valve turn on or off according to a control signal from the control unit (112);

[0042] An outlet (126) positioned facing the upper hose (118) at a certain distance from the lower hose (120) to send liquid immersion cooling oil to a heat exchanger;

[0043] An inlet port (128) positioned facing the lower hose (120) at a certain distance from the outlet port (126) to send liquid immersion cooling oil to the liquid immersion cooling tank (110);

[0044] A 4-way valve (130) having a 7th valve, an 8th valve, a 9th valve, and a 10th valve, connected to one side of the upper hose (118), one side of the lower hose (120), one side of the outlet (126), and one side of the inlet (128), and electrically connected to a control unit (112) so that the 7th valve, the 8th valve, the 9th valve, and the 10th valve turn on or off according to a control signal from the control unit (112);

[0045] It includes a heat exchanger (132) that is connected to one side of the outlet (126) and one side of the inlet (128), and is also electrically connected to a control unit (112) to cool the liquid immersion cooling oil sent from the outlet (126) according to a control signal from the control unit (112) and send the cooled liquid immersion cooling oil to the inlet (128).

[0046] Here, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth valves are electronic valves.

[0047]

[0048] Meanwhile, a first suction motor (not shown) is installed on one side inside the outlet (126), and the first suction motor is electrically connected to a control unit (112) to suck in liquid immersion cooling oil according to a control signal from the control unit (112) and send the sucked liquid immersion cooling oil to a heat exchanger (132).

[0049] On the other hand, a second suction motor (not shown) is installed on one side inside the inlet (128), and the second suction motor is electrically connected to a control unit (112) to suck in liquid immersion cooling oil according to a control signal from the control unit (112) and send the sucked liquid immersion cooling oil to the liquid immersion cooling tank (110).

[0050]

[0051] The manufacturing process of the liquid immersion cooling system (100) for high-efficiency cooling through active valve control according to the present invention, as described above, is as follows.

[0052] Here, the manufacturing process of the liquid immersion cooling system (100) for high-efficiency cooling through active valve control according to the present invention can be changed at any time depending on the manufacturer.

[0053]

[0054] First, prepare a liquid immersion cooling tank (110) that has an internal storage space.

[0055] Then, a first upper connecting hose (102) and a second upper connecting hose (104) are installed at a certain distance from one side of the upper part of the liquid immersion cooling tank (110).

[0056] Then, a first lower connecting hose (106) and a second lower connecting hose (108) are installed at a certain distance from one side of the lower portion of the liquid immersion cooling tank (110).

[0057] Then, after positioning the server unit (114) which includes the control unit (112) and the temperature measuring unit (116), the server unit (114) is positioned in the receiving space of the liquid immersion cooling tank (110).

[0058] Here, the temperature measuring unit (116) is electrically connected to the control unit (112).

[0059]

[0060] Then, an upper hose (118) is positioned at a certain distance from the above-mentioned liquid immersion cooling tank (110).

[0061] And, the upper hose (118) and the first upper connecting hose (102) are connected by a first pipe (not shown), and the upper hose (118) and the second upper connecting hose (104) are connected by a second pipe (not shown).

[0062] Then, a first 3-way valve (122) equipped with a first valve, a second valve and a third valve is positioned.

[0063] Then, the first valve of the first 3-way valve (122) is installed on one side inside the first pipe, the second valve of the first 3-way valve (122) is installed on one side inside the second pipe, and the third valve of the first 3-way valve (122) is installed on one side inside the upper hose.

[0064] And, the first valve, the second valve, and the third valve are electrically connected to the control unit (112).

[0065] Then, a lower hose (120) is positioned at a certain distance from the above-mentioned liquid immersion cooling tank (110).

[0066] And, the lower hose (120) and the first lower connecting hose (106) are connected by a third pipe (not shown), and the lower hose (120) and the second lower connecting hose (108) are connected by a fourth pipe (not shown).

[0067] Then, a second 3-way valve (124) equipped with a fourth valve, a fifth valve and a sixth valve is positioned.

[0068] Then, the fourth valve of the second 3-way valve (124) is installed on one side inside the third pipe, the fifth valve of the second 3-way valve (124) is installed on one side inside the fourth pipe, and the third valve of the second 3-way valve (124) is installed on one side inside the lower hose.

[0069] And, the fourth valve, the fifth valve, and the sixth valve are electrically connected to the control unit (112).

[0070] Then, an outlet (126) is positioned facing the upper hose (118) at a certain distance from the lower hose (120), and an inlet (128) is positioned facing the lower hose (120) at a certain distance from the outlet (126).

[0071] Then, the outlet (126) and the upper hose (118) are connected to the fifth pipe (not shown), the inlet (128) and the upper hose (118) are connected to the sixth pipe (not shown), the inlet (128) and the lower hose (120) are connected to the seventh pipe (not shown), and the outlet (126) and the lower hose (120) are connected to the eighth pipe (not shown).

[0072] Then, a 4-way valve (130) equipped with the 7th valve, 8th valve, 9th valve and 10th valve is positioned.

[0073] Then, the 7th valve of the 4-way valve (130) is installed on one side inside the 5th pipe, the 8th valve of the 4-way valve (130) is installed on one side inside the 6th pipe, the 9th valve of the 4-way valve (130) is installed on one side inside the 7th pipe, and the 10th valve of the 4-way valve (130) is installed on one side inside the 8th pipe.

[0074] And, the 7th valve, 8th valve, 9th valve and 10th valve are electrically connected to the control unit (112).

[0075] Then, after installing a heat exchanger (132) on one side of the outlet (126) and one side of the inlet (128), the heat exchanger (132) is electrically connected to the control unit (112).

[0076] Here, the heat exchanger (132) cools the liquid immersion cooling oil sent from the outlet (126) and sends the cooled liquid immersion cooling oil to the inlet (128).

[0077] In addition, a first suction motor (not shown) is installed on one side inside the outlet (126), and a second suction motor (not shown) is installed on one side inside the inlet (128).

[0078] And, the first suction motor and the second suction motor are electrically connected to the control unit (112).

[0079]

[0080] The operation of the liquid immersion cooling system (100) for high-efficiency cooling through active valve control according to the present invention, manufactured as described above, is as follows.

[0081] Prior to the operation of the liquid immersion cooling system (100) for high-efficiency cooling through active valve control according to the present invention,

[0082] As shown in FIG. 3, a data server (200) with electronic devices (not shown) installed is positioned in the receiving space of the above-mentioned liquid cooling tank (110).

[0083] Here, it is preferable that at least one data server (200) be located in the receiving space of the liquid immersion cooling tank (110).

[0084]

[0085] When the data server (200) is positioned in the receiving space of the liquid immersion cooling tank (110) as described above, the data server (200) is electrically connected to an external device (not shown). Then, as shown in FIG. 3, liquid immersion cooling oil is introduced into the receiving space of the liquid immersion cooling tank (110).

[0086] Then, a server unit (114) including a data server (200), a control unit (112), and a temperature measuring unit (116) is operated in the receiving space of the above-mentioned liquid immersion cooling tank (110).

[0087]

[0088] When the server unit (114) and data server (200) are operated as described above,

[0089] Heat is generated in the above server unit (114) and data server (200). At this time, the liquid immersion cooling oil introduced into the receiving space of the above liquid immersion cooling tank (100) cools the heat generated in the above server unit (114) and data server (200).

[0090] When the above liquid immersion cooling oil cools the heat generated in the server unit (114) and the data server (200), the liquid immersion cooling oil gradually begins to heat up and at the same time, the liquid immersion cooling oil begins convection (liquid immersion cooling oil circulation).

[0091]

[0092] For laminar-based immersion cooling fluid circulation (or natural convection), refer to Fig. 5.

[0093] As described above, when the liquid immersion cooling oil begins convection,

[0094] The above control unit (112) sends a control signal to the temperature measuring unit (116).

[0095] The above temperature measuring unit (116) measures the temperature of the liquid immersion cooling oil according to the control signal of the control unit (112) and sends the measured temperature value to the control unit (112).

[0096] And, the control unit (112) compares the measured temperature value with the set threshold temperature value, and if the measured temperature value is lower than the set threshold temperature value (i.e., considered as laminar flow-based liquid immersion cooling oil circulation or the liquid immersion cooling oil that has started to heat up starts to rise), it sends a control signal to the first, second, and third valves of the first 3-way valve (122), to the fourth, fifth, and sixth valves of the second 3-way valve (124), to the seventh and ninth valves of the 4-way valve (130), and to the heat exchanger (132).

[0097] Here, the 7th valve is installed on one side of the interior of the 5th pipe, and the 5th pipe is a pipe that connects the outlet (126) and the upper hose (118), and the 9th valve is installed on one side of the interior of the 7th pipe, and the 7th pipe is a pipe that connects the inlet (128) and the lower hose (120).

[0098]

[0099] And, the first, second, and third valves of the first 3-way valve (122) start operation according to the control signal of the control unit (112) to send the liquid immersion cooling oil located in the upper layer to the upper hose (118), and the seventh valve of the 4-way valve (130) starts operation according to the control signal of the control unit (112) to send the liquid immersion cooling oil sent from the upper hose (118) to the heat exchanger (132) through the outlet (126).

[0100] Then, the heat exchanger (132) starts operation according to the control signal of the control unit (112), heat exchanges the liquid immersion cooling oil sent from the outlet (126) to cool it, and sends the cooled liquid immersion cooling oil to the inlet (128).

[0101] And, the ninth valve of the above 4-way valve (130) starts operation according to the control signal of the control unit (112) and sends the liquid immersion cooling oil sent from the inlet (128) to the lower hose (120), and the fourth, fifth, and sixth valves of the above 2 3-way valve (124) start operation according to the control signal of the control unit (112) and send the liquid immersion cooling oil sent from the lower hose (120) to the liquid immersion cooling tank (100).

[0102]

[0103] For turbulence-based immersion cooling fluid circulation (or forced convection), refer to Fig. 5.

[0104] As described above, when the liquid immersion cooling oil begins convection,

[0105] The above control unit (112) sends a control signal to the temperature measuring unit (116).

[0106] The above temperature measuring unit (116) measures the temperature of the liquid immersion cooling oil according to the control signal of the control unit (112) and sends the measured temperature value to the control unit (112).

[0107] And, the control unit (112) compares the measured temperature value with the set threshold temperature value, and if the measured temperature value is higher than the set threshold temperature value (i.e., considered as turbulence-based liquid immersion cooling oil circulation), sends a control signal to the first, second, and third valves of the first 3-way valve (122), to the fourth, fifth, and sixth valves of the second 3-way valve (124), to the eighth and tenth valves of the 4-way valve (130), to the first suction motor, to the second suction motor, and to the heat exchanger (132).

[0108] Here, the 8th valve is installed on one side of the interior of the 6th pipe, and the 6th pipe is a pipe that connects the outlet (126) and the lower hose (120), and the 10th valve is installed on one side of the interior of the 8th pipe, and the 8th pipe is a pipe that connects the inlet (128) and the upper hose (118).

[0109]

[0110] And, the 4th, 5th, and 6th valves of the 2nd 3-way valve (124) start operation according to the control signal of the control unit (112) to send liquid immersion cooling oil to the lower hose (120), and the 8th valve of the 4-way valve (130) starts operation according to the control signal of the control unit (112) to send the liquid immersion cooling oil discharged from the lower hose (120) to the outlet (126).

[0111] Then, the first suction motor starts operation according to the control signal of the control unit (112), sucks in the liquid immersion cooling oil sent to the outlet (126), and quickly sends the sucked liquid immersion cooling oil to the heat exchanger (132).

[0112] Here, the reason the first suction motor is installed is to accelerate the flow of the liquid immersion cooling oil to rapidly cool the heat generated in the server unit (114) and data server (200) located in the receiving space of the liquid immersion cooling tank (100).

[0113]

[0114] Then, the heat exchanger (132) starts operation according to the control signal of the control unit (112), heat exchanges the liquid immersion cooling oil sent from the outlet (126) to cool it, and sends the cooled liquid immersion cooling oil to the inlet (128).

[0115] And, the second suction motor starts operation according to the control signal of the control unit (112), sucks in the liquid immersion cooling oil sent to the inlet (128), and quickly sends the sucked liquid immersion cooling oil to the eighth pipe.

[0116] Here, the reason the second suction motor is installed is to accelerate the flow of the liquid immersion cooling oil to rapidly cool the heat generated in the server unit (114) and data server (200) located in the receiving space of the liquid immersion cooling tank (100).

[0117]

[0118] And, the 10th valve of the 4-way valve (130) starts operation according to the control signal of the control unit (112) and sends the liquid immersion cooling oil sent from the 8th pipe through the inlet (128) to the upper hose (118), and the 1st valve, 2nd valve and 3rd valve of the 1st 3-way valve (122) start operation according to the control signal of the control unit (112) and send the liquid immersion cooling oil sent from the upper hose (118) to the liquid immersion cooling tank (100).

[0119]

[0120] Therefore, in the case of turbulent flow-based liquid immersion cooling oil circulation (or forced convection), the liquid immersion cooling oil can be rapidly cooled and the rapidly cooled liquid immersion cooling oil can be sent to the receiving space of the liquid immersion cooling tank (100), thereby allowing the heat generated in the server unit (114) and data server (200) located in the receiving space of the liquid immersion cooling tank (100) to be rapidly cooled.

[0121]

[0122] Therefore, the present invention improves cooling efficiency through the circulation of immersion cooling oil by actively controlling the inlet and outlet valves of the immersion cooling oil, and improves cooling efficiency by utilizing laminar and turbulent flow of the immersion cooling oil.

[0123]

[0124] The detailed description of the invention above is merely illustrative of the invention and is used only for the purpose of explaining the invention, not to limit the meaning or the scope of the invention as defined in the claims.

[0125] Therefore, those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical concept of the appended claims.

Claims

1. A liquid immersion cooling tank (110) having a receiving space in which liquid immersion cooling oil can be introduced, wherein a first upper connecting hose (102) and a second upper connecting hose (104) connected to the receiving space at a certain distance from one side of the upper portion, and a first lower connecting hose (106) and a second lower connecting hose (108) connected to the receiving space at a certain distance from one side of the lower portion, are installed; A server unit (114) that is detachably positioned on one side of the receiving space of the above-mentioned liquid immersion cooling tank (110) and has a control unit (112) installed therein; A temperature measuring unit (116) installed on one side of the server unit (114) at a certain interval from the control unit (112), electrically connected to the control unit (112) to measure the temperature of the liquid immersion cooling oil introduced into the receiving space according to the control signal of the control unit (112); An upper hose (118) positioned at a certain distance from the above-mentioned liquid immersion cooling tank (110); A lower hose (120) positioned at a certain distance from the upper hose (118); A first 3-way valve (122) having a first valve, a second valve, and a third valve, connected to one side of the first upper connecting hose (102), one side of the second upper connecting hose (104), and one side of the upper hose (118), and electrically connected to a control unit (112) so that the first valve, the second valve, and the third valve turn on or off according to a control signal from the control unit (112); A second 3-way valve (124) having a fourth valve, a fifth valve, and a sixth valve, connected to one side of the first lower connecting hose (106), one side of the second lower connecting hose (108), and one side of the lower hose (120), and electrically connected to a control unit (112) so that the fourth valve, the fifth valve, and the sixth valve turn on or off according to a control signal from the control unit (112); An outlet (126) positioned facing the upper hose (118) at a certain distance from the lower hose (120) to send liquid immersion cooling oil to a heat exchanger; An inlet port (128) positioned facing the lower hose (120) at a certain distance from the outlet port (126) to send liquid immersion cooling oil to the liquid immersion cooling tank (110); The seventh, eighth, ninth, and tenth valves are provided to one side of the upper hose (118), one side of the lower hose (120), and the outlet. A 4-way valve (130) connected to one side of (126) and one side of the inlet (128), electrically connected to a control unit (112) so that the 7th valve, 8th valve, 9th valve and 10th valve turn on or off according to a control signal from the control unit (112); It includes a heat exchanger (132) that is connected to one side of the outlet (126) and one side of the inlet (128), and is also electrically connected to a control unit (112) to cool the liquid immersion cooling oil sent from the outlet (126) according to a control signal from the control unit (112) and send the cooled liquid immersion cooling oil to the inlet (128). The above-mentioned first valve, second valve, third valve, fourth valve, fifth valve, sixth valve, seventh valve, eighth valve, ninth valve and tenth valve are electronic valves, and A first suction motor is installed on one side inside the above outlet (126), and the first suction motor is electrically connected to a control unit (112) to suck in liquid immersion cooling oil according to a control signal from the control unit (112) and send the sucked liquid immersion cooling oil to a heat exchanger (132). A second suction motor is installed on one side inside the inlet (128), and the second suction motor is electrically connected to a control unit (112) to suck up liquid immersion cooling oil according to a control signal from the control unit (112) and send the sucked liquid immersion cooling oil to a liquid immersion cooling tank (110), characterized by a high-efficiency cooling liquid immersion cooling system through active valve control.

2. A first step of measuring the temperature of the liquid immersion cooling oil according to the control signal of the control unit (112) and sending the measured temperature value to the control unit (112); After the first step above, the control unit (112) compares the measured temperature value with the set threshold temperature value, and if the measured temperature value is higher than the set threshold temperature value (i.e., considered as turbulence-based liquid immersion cooling oil circulation), sends a control signal to the first, second, and third valves of the first 3-way valve (122), to the fourth, fifth, and sixth valves of the second 3-way valve (124), to the eighth and tenth valves of the 4-way valve (130), to the first suction motor, to the second suction motor, and to the heat exchanger (132); and a second step; After the second step above, the fourth, fifth, and sixth valves of the second 3-way valve (124) start operation according to a control signal from the control unit (112) to send liquid immersion cooling oil to the lower hose (120), and the eighth valve of the 4-way valve (130) starts operation according to a control signal from the control unit (112) to send the liquid immersion cooling oil discharged from the lower hose (120) to the outlet (126), in a third step; After the above third step, the first suction motor starts operation according to the control signal of the control unit (112), sucks in the liquid immersion cooling oil sent to the outlet (126), and sends the sucked liquid immersion cooling oil to the heat exchanger (132), in the fourth step; After the above fourth step, the heat exchanger (132) starts operation according to the control signal of the control unit (112) to heat exchange the liquid immersion cooling oil sent from the outlet (126) to cool it, and sends the cooled liquid immersion cooling oil to the inlet (128), in the fifth step; A method for controlling a liquid immersion cooling system with high efficiency cooling through active valve control, characterized by including a sixth step after the above fifth step, wherein the second suction motor starts operation according to a control signal of the control unit (112) to suck in liquid immersion cooling oil sent to the inlet (128) and rapidly sends the sucked liquid immersion cooling oil to the eighth pipe, the tenth valve of the 4-way valve (130) starts operation according to a control signal of the control unit (112) to send liquid immersion cooling oil sent from the eighth pipe through the inlet (128) to the upper hose (118), and the first, second, and third valves of the first 3-way valve (122) start operation according to a control signal of the control unit (112) to send liquid immersion cooling oil sent from the upper hose (118) to the liquid immersion cooling tank (100).

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