Immersion Cooling System, Reservoir Assembly and Immersion Cartridge with Double-Sealed Filtration Nexus and Active Safety Buffer

Abstract

[assignment] The present invention relates to a liquid immersion cooling system utilizing a dielectric fluid, wherein (i) prevent exposure to the outside air and contamination caused by opening the storage tank when replenishing fluid, and (ii) efficiently compensates for volume changes (hydraulic pressure changes) due to thermal expansion / contraction of the fluid during operation, and (iii) fundamentally block leakage of residual fluid occurring during the process of attaching / detaching the immersion cartridge and disconnecting the connector, and (iv) The purpose is to improve long-term reliability by suppressing moisture penetration / oxidation and the degradation of the dielectric fluid's insulation (non-conductivity) at the electronic node inlet / outlet openings and electronic node I / O interfaces of the immersion cartridge. [Solution] The present invention forms a pretreatment chamber (121) into which return fluid and replenishment fluid are introduced on the upper part of a reservoir assembly (120), and By placing a filter cartridge (150) between the pretreatment chamber (121) and the main tank (122) to shield and seal the opening of the main tank (122), A double-sealed filtration nexus is implemented to prevent the fluid inside the main tank (122) from being directly exposed to the outside air even when the manual inlet (123) is opened. The filter cartridge (150) may include a physical filtration layer that removes particulate contaminants and a chemical filtration layer that adsorbs or neutralizes acidic substances that may be generated by the oxidation reaction of the dielectric fluid. In addition, the circulation path includes a radiator (160) to release heat from the fluid to the outside. In addition, the liquid immersion cartridge (200) includes a first chamber (210) into which fluid is filled and a dry second chamber (220) separated by a partition wall, and A collection unit (224) is placed below the fluid connector (230) in the second chamber (220) to collect residual fluid generated during the connector coupling / separation process, thereby preventing leakage. In addition, a double sealing structure is applied to the opening for electronic node insertion / extraction in the first chamber (210) by an internal sealing device (211) and an external sealing device (212), and In the intermediate drying space formed by the above double seal, a physicochemical contamination prevention cartridge (213) and / or an electronic node I / O connector module (214) are installed to optimize airtightness performance and long-term reliability. Furthermore, the physicochemical contamination prevention cartridge (213) may also be additionally placed in the lower space within the second chamber (220) (e.g., near the fluid connector (230) or the collection unit (224), in which case one or more cartridges (213) may be provided. [effect] According to the present invention, even during fluid replenishment operations, the fluid in the main tank is not directly exposed to the outside air, thereby suppressing oxidation and contamination of the fluid. Volume compensation due to thermal expansion / contraction is efficiently performed, improving system stability and maintainability, and It can be operated safely without floor contamination when attaching or detaching the cartridge. In addition, double sealing and physicochemical protection are applied to the electronic node openings and I / O interfaces to suppress moisture penetration / oxidation and degradation of dielectric fluid insulation, and The long-term reliability of electronic nodes and connectors is improved.

Description

Technology Field

[0001] The present invention relates to an immersion cooling technology for immersing and cooling a heating element using a dielectric fluid, wherein

[0002] In particular, simultaneously achieving prevention of contamination during fluid replenishment, volume compensation due to thermal expansion / contraction, prevention of leakage when inserting or removing modules (cartridges), and airtightness of electronic node inlet / outlet openings and suppression of fluid / component degradation.

[0003] The invention relates to a reservoir assembly, an immersion cartridge, and an immersion cooling system including the same. Background Technology

[0004] Immersion cooling systems have the advantage of efficiently removing heat generated from servers, workstations, high-performance computing devices, etc., but

[0005] There was a problem where the fluid oxidized or foreign substances entered due to contact with the outside air when the reservoir lid or inlet was opened to replenish fluid.

[0006] In addition, the fluid volume changes due to thermal expansion or contraction caused by temperature variations during operation, and consequently, hydraulic fluctuations or the movement of compensating fluid are required.

[0007] Meanwhile, when operating with a modular structure, a small amount of fluid (drip) dripping from the connector when separating / replacing the cartridge may contaminate the floor, or

[0008] Depending on the characteristics of the dielectric fluid, there is a concern that it may cause device corrosion.

[0009] In particular, certain dielectric fluids, such as fluorine-based ones, can generate acidic byproducts due to moisture or oxidation reactions, which can affect component reliability during long-term operation.

[0010] In addition, when an opening and an interface are formed in the immersion portion (first chamber) of the immersion cartridge for the input / output and I / O connection of the electronic node,

[0011] If external moisture or oxygen penetrates through the opening, or if airtightness deteriorates over the long term, the insulating properties (non-conductivity) of the dielectric fluid may decrease, potentially leading to reduced system reliability. The problem to be solved

[0012] The present invention aims to solve the following problems.

[0013] First, it provides a double-sealed structure for the storage tank to prevent the fluid inside the main tank from being directly exposed to the outside air during the fluid replenishment process.

[0014] Second, it provides a flow path that simultaneously achieves the removal of fluid contaminants and the reduction of pump load during the volume compensation process due to the thermal expansion / contraction of the fluid.

[0015] Third, it prevents leakage accidents by capturing and isolating residual fluid drip that may occur during cartridge insertion and removal within the cartridge itself.

[0016] Fourth, double sealing and physicochemical protection are applied to the electronic node inlet / outlet openings and I / O interface parts to suppress moisture penetration / oxidation and degradation of dielectric fluid insulation. means of solving the problem

[0017] The configurations relating to the immersion cooling system, the configurations relating to the reservoir assembly, and the configurations relating to the immersion cartridge described in this specification are,

[0018] They share interconnected technical features based on a common inventive concept of preventing contamination during the fluid replenishment process, compensating for volume changes during operation, and preventing leakage during the maintenance process.

[0019] To solve the above problem, the present invention places a pretreatment chamber (121) on the upper part of a reservoir assembly (120), and

[0020] A filter cartridge (150) is placed between the pretreatment chamber (121) and the main tank (122) to shield and seal the opening of the main tank (122).

[0021] Accordingly, even if the cap of the manual injection port (123) is opened, the fluid inside the main tank (122) is prevented from coming into direct contact with the outside air (secondary sealing).

[0022] The filter cartridge (150) may include a physical filtration layer (particle removal) and a chemical filtration layer (adsorption / neutralization of acidic byproducts), and

[0023] This can improve the long-term stability of the dielectric fluid (including the management of the Total Anomaly (TAN)).

[0024] In addition, the circulation path of the liquid immersion cooling system includes a radiator (160) to release heat of the fluid to the outside, and

[0025] The return fluid from the radiator (160) flows into the pretreatment chamber (121) and, if necessary, passes through the filter cartridge (150) and is stored in the main tank (122).

[0026] In addition, the liquid immersion cartridge (200) divides the first chamber (210) into which fluid is filled and the second chamber (220) into which fluid is substantially absent by a partition wall, and

[0027] A fluid connector (230) is placed in the second chamber (220), and a collection unit (224) is placed below the fluid connector (230) to collect residual fluid.

[0028] If necessary, the fluid connector (230) can be placed in a recessed position, and

[0029] The collection unit (224) may include a polymer absorbent, or the second chamber (220) may include a gasket door to block the entry of external foreign matter.

[0030] In addition, an internal sealing device (211) and an external sealing device (212) are applied to the electronic node inlet / outlet opening of the first chamber (210) to form a double seal, and

[0031] A physicochemical contamination prevention cartridge (213) and / or an electronic node I / O connector module (214) are installed in the intermediate drying space between them to improve airtightness performance and long-term reliability.

[0032] Furthermore, in addition to the physicochemical contamination prevention cartridge (213) being placed in the intermediate drying space,

[0033] It may also be placed in the lower space within the second chamber (220), particularly near the fluid connector (230) and / or the collection unit (224), and

[0034] In this case, one or more (multiple) cartridges (213) may be provided. Effects of the invention

[0036] According to the present invention, even when replenishing fluid, exposure of the fluid in the main tank to the outside air is prevented, thereby suppressing oxidation and contamination, and

[0037] The accumulation of acidic byproducts is reduced through the chemical filtration layer, thereby decreasing the risk of corrosion.

[0038] In addition, filtering can be selectively applied during the volume compensation process to reduce pump load and maintenance burden.

[0039] In addition, drip leakage is suppressed by the dry buffer (second chamber) and collection unit within the cartridge itself,

[0040] Clean and safe maintenance is possible even in office or general indoor environments.

[0041] In addition, moisture penetration / oxidation and degradation of insulation are suppressed through double sealing of the electronic node opening and physicochemical protection at multiple locations (intermediate dry space and / or lower part of the second chamber),

[0042] The long-term reliability of electronic nodes and connectors is improved. Brief explanation of the drawing

[0043] FIG. 1a is a schematic diagram illustrating the hydraulic circuit configuration of a liquid immersion cooling system according to an embodiment of the present invention. FIG. 1b is a drawing illustrating a modified embodiment (e.g., horizontal arrangement) with a different arrangement direction compared to the basic embodiment of FIG. 1a. FIG. 2a is a cross-sectional structure of a reservoir assembly (120) according to an embodiment of the present invention, showing a double seal and an inner filter layer including a state where the cap is open. FIG. 2b is a drawing showing the state with the cap closed compared to the basic embodiment of FIG. 2a. FIG. 3a is a cross-sectional structure of a liquid immersion cartridge (200) according to an embodiment of the present invention, including a plurality of physicochemical contamination prevention cartridges (213) together with a lateral fluid connector and an opening double-sealed interface. FIG. 3b is a modified embodiment with a different fluid connector direction compared to the basic embodiment of FIG. 3a, and is a drawing showing a plurality of downward fluid connectors and physicochemical contamination prevention cartridges (213). Specific details for implementing the invention

[0044] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0045] However, the scope of the present invention is not limited to the following embodiments and is defined by the claims.

[0046] (1) Overall system configuration (Fig. 1a, Fig. 1b)

[0047] Referring to FIGS. 1a and 1b, the immersion cooling system comprises a circulation device (e.g., a circulation pump 140) that circulates a fluid,

[0048] Radiator (160) (example of a heat exchanger),

[0049] A circulation path including a reservoir assembly (120) can be formed.

[0050] The immersion chamber in which the dielectric fluid is received can be implemented as one or more immersion cartridges (200) or fluid receiving spaces (e.g., tank, housing, etc.), and

[0051] The above liquid immersion cartridge (200) can be detachably coupled through the manifold unit (130).

[0052] FIG. 1a illustrates an exemplary embodiment in which a plurality of liquid immersion cartridges (200) are arranged in a bookshelf-like / vertical direction, and

[0053] FIG. 1b illustrates a modified embodiment (e.g., horizontal arrangement) with a different cartridge placement direction while maintaining the same fluid circuit concept.

[0054] The present invention is not limited to the number of cartridges, manifold structure, type of radiator (including air-cooled / water-cooled / chiller), type of circulation device, etc.

[0056] As an example of fluid flow,

[0057] Fluid is supplied to the circulation pump (140) through the suction port (filter bypass) at the bottom of the main tank (122), and

[0058] The fluid discharged from the pump (140) is distributed to each liquid immersion cartridge (200) through the manifold unit (130) and circulated, and then

[0059] It flows into the radiator (160) through the return line and is cooled, and

[0060] The return fluid discharged from the radiator (160) can be introduced into the pretreatment chamber (121) of the reservoir assembly (120).

[0061] A compensation operation is also possible in which fluid expanded by thermal expansion during operation flows back into the pretreatment chamber (121), passes through the filter cartridge (150), and is stored in the main tank (122).

[0063] (2) Reservoir assembly (Fig. 2a, Fig. 2b)

[0064] Referring to FIGS. 2a and 2b, the reservoir assembly (120) includes a main tank (122) and a pretreatment chamber (121).

[0065] The pretreatment chamber (121) may be formed to be in communication with a manual inlet (123) and a return water inlet port (e.g., a return line from a radiator (160)).

[0066] A filter cartridge (150) is placed between the pretreatment chamber (121) and the main tank (122), and

[0067] The filter cartridge (150) shields and seals the opening of the main tank (122) (secondary sealing) through a sealing part such as an O-ring.

[0068] Therefore, even when the cap of the manual inlet (123) is opened, the fluid in the main tank (122) is prevented from being directly exposed to the outside air.

[0069] Additionally, the above-mentioned return water inlet port may include a nozzle portion configured to spray return water into the pretreatment chamber (121).

[0071] The filter cartridge (150) may include a physical filtration layer and a chemical filtration layer, and

[0072] The chemical filtration layer can reduce the increase in the total acid number (TAN) of the fluid by including means for removing acidic byproducts, such as acid scavengers or ion exchange resins.

[0073] The filter cartridge (150) can be implemented as a replaceable type that can be inserted / removed from the pretreatment chamber (121).

[0075] FIG. 2a illustrates a state in which the cap can be opened using dotted lines, etc., while

[0076] This is an example emphasizing a structure (double seal) in which the main tank (122) is shielded by a filter cartridge (150), and

[0077] Figure 2b illustrates the basic operating structure with the cap closed.

[0079] (3) Immersion cartridge (Fig. 3a, Fig. 3b)

[0080] Referring to FIGS. 3a and 3b, the liquid immersion cartridge (200) comprises a first chamber (210) (Wet Zone) in which dielectric fluid is filled, and

[0081] It includes a dry second chamber (220) (Dry Zone or Safety Buffer Zone) separated by a partition.

[0082] A fluid connector (230) connected to an external fluid circuit is disposed in the second chamber (220), and

[0083] A collection unit (224) (e.g., drip tray) for collecting residual fluid generated during the connector coupling / separation process is disposed below the fluid connector (230).

[0084] The fluid connector (230) can be positioned in a location recessed inward from the outer wall surface, and

[0085] The collection unit (224) can gel the residual fluid by including a polymer absorbent.

[0086] In addition, the second chamber (220) may be equipped with a gasket door that blocks the entry of external foreign matter when combined.

[0087] Additionally, the fluid connector (230) may include an internal valve (e.g., an automatic shut-off valve) that blocks the flow path when separated from the external fluid circuit.

[0088] Thus, double leakage prevention is achieved by blocking the flow path by the internal valve of the connector and isolating the residual fluid by the second chamber (220) / collection unit (224).

[0090] Additionally, an internal sealing device (211) and an external sealing device (212) may be disposed in the opening for the electronic node insertion / extraction of the first chamber (210) to form a double sealing structure.

[0091] An intermediate drying space in which dielectric fluid is substantially absent can be formed between the inner sealing device (211) and the outer sealing device (212), and

[0092] One or more physicochemical anti-contamination cartridges (213) may be installed in the above intermediate drying space to suppress moisture penetration / oxidation and degradation of insulation.

[0093] In addition, an electronic node I / O connector module (214) for electrically connecting various I / O terminals of the electronic node to the outside can be installed in the above intermediate drying space, and

[0094] At this time, the connector module (214) can be configured to enable electrical connection while maintaining airtightness through a feed-through and / or porting structure, etc.

[0096] As illustrated in FIGS. 3a and 3b, in addition to the physicochemical contamination prevention cartridge (213) being placed in the intermediate drying space,

[0097] It may also be additionally placed in the lower space within the second chamber (220), particularly near the fluid connector (230) and / or the collection unit (224), and

[0098] In this case, the cartridge (213) is provided in multiple units to perform dehumidification / oxidation inhibition / acid byproduct reduction functions at multiple locations.

[0099] The contamination prevention cartridge (213) placed in the lower space above is configured separately from the absorbent (e.g., polymer absorbent) that may be included in the collection unit (224), and can be configured to be replaceable in the form of a cartridge.

[0101] FIG. 3a illustrates an exemplary embodiment in which a fluid connector (230) is positioned laterally, and

[0102] FIG. 3b illustrates a modified embodiment (e.g., downward connector) in which the arrangement direction of the fluid connector (230) is different while maintaining the same inventive concept.

[0103] The external shape, opening position, connector orientation, and internal seal / door shape of the cartridge can be varied depending on the application environment.

[0104] (4) Volume compensation and Euro logic (example)

[0105] In one embodiment of the present invention, when the fluid undergoes thermal expansion, the expanded fluid flows back into the pretreatment chamber (121) through the return inlet port.

[0106] After passing through the filter cartridge (150) in the forward direction, it can be stored in the main tank (122).

[0107] Conversely, when the fluid contracts, the stored fluid does not pass through the filter cartridge (150) through the lower suction port of the main tank (122).

[0108] It can be supplied to the suction side of the circulation device.

[0109] This unidirectional filtration-bidirectional compensation path can simultaneously achieve filtering efficiency and pump load reduction.

[0110] However, the present invention is not limited thereto and can be implemented through various valves / orifices / flow control means. Explanation of the symbols

[0111] 120: Reservoir Assembly 121: Pre-filtration Chamber 122: Main Tank 123: Manual Fill Port 130: Manifold Unit 140: Circulation Pump (Example of a circulation device) 150: Filter cartridge (physical / chemical filtration) 160: Radiator (Heat Exchanger) 200: Immersion Cartridge 210: First Chamber (Wet Zone) 211: Internal sealing device (e.g., including internal tray / housing for opening, forming an intermediate drying space, mountable with 213 / 214) 212: External seals (e.g., external covers and O-ring-based mechanical seals) 213: One or more physicochemical contamination prevention cartridges (adsorption or neutralization of moisture / oxygen / acid byproducts, etc.) may be provided, and It may be placed in the intermediate drying space (211) and / or the second chamber (220) (e.g., near the fluid connector (230) or the collection unit (224)). 214: Electronic Node I / O Connector Module 220: Chamber 2 (Dry Zone / Safety Buffer Zone) 224: Collection Unit / Drip Tray 230: Fluid Connector

Claims

Claim 1 A liquid immersion cooling system for cooling at least one heat-generating element using a dielectric fluid comprises: a liquid immersion chamber in which the dielectric fluid is received; a circulation channel formed to be fluidically connected to the liquid immersion chamber and to allow the dielectric fluid to circulate; a circulation device for circulating the fluid along the circulation channel; and a reservoir assembly (120) fluidly connected to the return side of the circulation channel and storing a fluid for compensating for changes in the volume of the fluid. The reservoir assembly (120) comprises: a pretreatment chamber (121) formed such that a fluid injection port for injecting fluid from the outside and a return inlet port for receiving fluid returned from the circulation channel are respectively connected; and a main tank (122) in which the fluid is stored. A liquid immersion cooling system characterized by including: a filter cartridge (150) disposed between the pretreatment chamber (121) and the main tank (122) and interposed in the fluid inflow path from the pretreatment chamber (121) to the main tank (122), and shielding the main tank (122) so as to seal the opening of the main tank (122) to prevent the fluid inside the main tank (122) from being directly exposed to the outside air even when the fluid injection port is opened. Claim 2 A liquid immersion cooling system according to claim 1, wherein the liquid immersion chamber comprises at least one liquid immersion cartridge (200) in which a dielectric fluid is contained, and the system further comprises a manifold unit (130) to which the liquid immersion cartridge (200) is detachably coupled to form a fluid flow path. Claim 3 A liquid immersion cooling system according to claim 1, wherein the circulation path includes a radiator (160) that releases heat of the fluid to the outside, and the return water inlet port of the reservoir assembly (120) is connected to a return water line discharged from the radiator (160). Claim 4 A liquid immersion cooling system according to claim 1, characterized in that the fluid injection port and the return water inlet port are configured to merge within the pretreatment chamber (121) to form a single space. Claim 5 A liquid immersion cooling system according to claim 1, wherein the fluid injection port comprises a manual injection port (123) for replenishing fluid from the outside and a cap for opening and closing the manual injection port (123). Claim 6 A liquid immersion cooling system according to claim 1, wherein the filter cartridge (150) comprises a physical filtration layer for removing particulate contaminants and a chemical filtration layer for adsorbing or neutralizing acidic substances generated by the oxidation reaction of dielectric fluid. Claim 7 A liquid immersion cooling system according to claim 6, wherein the chemical filtration layer comprises one or more of an acid scavenger and an ion exchange resin, and the reservoir assembly (120) is configured to function as a chemical device for controlling the total acid value (TAN) of the fluid. Claim 8 A liquid immersion cooling system according to claim 1, wherein the circulation path is characterized by having a unidirectional filtration-bidirectional compensation path in which, when the fluid undergoes thermal expansion, the expanded fluid flows back into the pretreatment chamber (121) through the return inlet port, passes through the filter cartridge (150) in the forward direction, and is stored in the main tank (122), and when the fluid undergoes contraction, the fluid stored in the main tank (122) is supplied to the suction side of the circulation device without passing through the filter cartridge (150). Claim 9 A liquid immersion cooling system characterized in that, in claim 8, a suction port is formed in the lower part of the main tank (122) in communication with the suction side of the circulation device, and the suction port is configured to bypass the filter cartridge (150) and directly suck in the fluid stored in the main tank (122). Claim 10 A reservoir assembly (120) fluidically connected to a circulation path of a liquid immersion cooling system to store a fluid for compensation for changes in fluid volume, comprising: a main tank (122) in which the fluid is stored; a pretreatment chamber (121) disposed above the main tank (122) and formed such that a fluid injection port for injecting fluid from the outside and a return inlet port for receiving fluid returned from the circulation path are respectively connected; and a filter cartridge (150) disposed between the pretreatment chamber (121) and the main tank (122) and formed to allow fluid flowing from the pretreatment chamber (121) to the main tank (122) to pass through; wherein the filter cartridge (150) is configured to have a sealing portion surrounding an opening of the main tank (122) to fluidly partition the pretreatment chamber (121) and the main tank (122) and to prevent the fluid inside the main tank (122) from being directly exposed to the outside air even when the fluid injection port is opened. Claim 11 A reservoir assembly according to claim 10, characterized in that the pretreatment chamber (121) is positioned above the main tank (122) and formed to face the upper part of the filter cartridge (150). Claim 12 A reservoir assembly according to claim 10, wherein the fluid injection port comprises a manual injection port (123) formed on the upper part of the pretreatment chamber (121). Claim 13 A reservoir assembly characterized in that, in item 10, the above-mentioned return water inlet port is formed to communicate through the side wall of the above-mentioned pretreatment chamber (121). Claim 14 A reservoir assembly according to claim 13, wherein the return water inlet port comprises a nozzle portion configured to spray return water into the pretreatment chamber (121). Claim 15 A reservoir assembly characterized in that, in item 10, the filter cartridge (150) is a replaceable cartridge configured to be insertable and removable from the pretreatment chamber (121). Claim 16 A reservoir assembly according to claim 10, wherein the filter cartridge (150) comprises a physical filtration layer for removing particulate contaminants and a chemical filtration layer for adsorbing or neutralizing acidic substances generated by the oxidation reaction of dielectric fluid. Claim 17 A reservoir assembly according to claim 16, characterized in that the chemical filtration layer is configured to include one or more of an acid scavenger and an ion exchange resin. Claim 18 A reservoir assembly according to claim 10, wherein the main tank (122) forms a storage space fluidly partitioned from the filter cartridge (150), and is configured such that the filter cartridge (150) blocks the opening of the main tank (122), thereby preventing the fluid inside the main tank (122) from being directly exposed to the outside air even when the fluid injection port is opened. Claim 19 An immersion cartridge (200) used in an immersion cooling system, characterized by comprising: a first chamber (210) filled with dielectric fluid; a second chamber (220) separated from the first chamber (210) by a partition and substantially devoid of fluid; a fluid connector (230) disposed within the second chamber (220) and fluidly connected to an external fluid circuit; and a collection unit (224) disposed below the fluid connector (230) within the second chamber (220) to collect residual fluid generated during the coupling or separation process of the fluid connector (230). Claim 20 A liquid immersion cartridge according to claim 19, characterized in that the second chamber (220) is positioned at the front of the liquid immersion cartridge (200) and the first chamber (210) is positioned at the rear of the second chamber (220). Claim 21 In claim 19, the liquid immersion cartridge is characterized in that the fluid connector (230) is positioned inwardly recessed from the outer wall surface of the liquid immersion cartridge (200). Claim 22 In claim 19, the fluid connector (230) is characterized by including a connector internal valve that blocks the flow path when the fluid connector (230) is separated from the external fluid circuit, in a liquid immersion cartridge. Claim 23 A liquid immersion cartridge according to claim 19, characterized in that the collection unit (224) is a drip tray configured to be positioned vertically below the fluid connector (230) so that the residual fluid falls by gravity and is received. Claim 24 In claim 23, the liquid immersion cartridge is characterized in that the residue collection tray (224) contains a super absorbent polymer that absorbs fluid and gels inside. Claim 25 In claim 19, the liquid immersion cartridge is characterized in that the second chamber (220) further includes a gasket door configured to block the inflow of foreign substances from the outside. Claim 26 In claim 25, the liquid immersion cartridge is characterized in that the gasket door is configured to seal the second chamber (220) while the fluid connector (230) is coupled to an external fluid circuit. Claim 27 A liquid immersion cartridge according to claim 22, characterized in that it is configured to form a double-sealed structure by blocking the flow path by the internal valve of the connector and isolating residual fluid by the second chamber (220) and the collection unit (224). Claim 28 In claim 1, the liquid immersion cooling system comprises a liquid immersion cartridge (200) comprising: a first chamber (210) filled with dielectric fluid; a second chamber (220) separated from the first chamber (210) by a partition wall and not containing fluid; a fluid connector (230) disposed within the second chamber (220) and fluidly connected to an external fluid circuit; and a collection unit (224) disposed below the fluid connector (230) within the second chamber (220) to collect residual fluid generated during the coupling or separation process of the fluid connector (230). Claim 29 In claim 19, the housing of the first chamber (210) has an opening formed for the insertion or withdrawal of an electronic node, the opening is double-sealed by an internal sealing device (211) disposed on the side of the first chamber (210) and an external sealing device (212) disposed on the outside side of the opening, and an intermediate drying space is formed between the internal sealing device (211) and the external sealing device (212) in which dielectric fluid is substantially absent, characterized by an immersion cartridge. Claim 30 In claim 29, the liquid immersion cartridge is characterized by having one or more physicochemical anti-contamination cartridges (213) installed in the intermediate drying space to adsorb or neutralize at least one of moisture, oxygen, and acidic byproducts in order to suppress the degradation of the dielectric fluid due to moisture penetration or oxidation. Claim 31 A liquid immersion cartridge according to claim 30, characterized in that at least one additional physicochemical contamination prevention cartridge (213) is disposed in the lower space near at least one of the fluid connector (230) or the collection part (224) within the second chamber (220). Claim 32 An immersion cartridge according to claim 29 or 30, characterized in that an electronic node I / O connector module (214) configured to electrically connect the I / O terminal of an electronic node to the outside while maintaining the airtightness of the intermediate drying space is installed in the intermediate drying space. Claim 33 In claim 32, the above electronic node I / O connector module (214) comprises at least one of an electrical feed-through structure and a potting structure, and is configured such that the electrical connection between the first chamber (210) side and the external side is airtight while passing through the intermediate drying space, characterized in that it is an immersion cartridge. Claim 34 In claim 30 or 31, the above physicochemical contamination prevention cartridge (213) is characterized by comprising one or more of a desiccant, a moisture scavenger, an oxygen scavenger, an acid scavenger, and an ion exchange resin. Claim 35 A liquid immersion cartridge according to claim 29, wherein the external sealing device (212) comprises an O-ring, and the O-ring is configured to be compressed by an external cover, door, or fastening structure to form an external seal of the opening. Claim 36 In claim 28, the liquid immersion cartridge (200) included in the liquid immersion cooling system is characterized in that an opening for the insertion or withdrawal of an electronic node is formed in the housing of the first chamber (210), the opening is double-sealed by an internal sealing device (211) disposed on the side of the first chamber (210) and an external sealing device (212) disposed on the outside side of the opening, and an intermediate drying space is formed between the internal sealing device (211) and the external sealing device (212) in which dielectric fluid is not contained. Claim 37 A reservoir assembly according to claim 12, wherein the pretreatment chamber (121) is configured to form a buffer space that accommodates the volume of supplementary fluid flowing in through the manual inlet (123) and fluid flowing back through the return inlet port due to thermal expansion during operation.

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