# US 2025/0098124 A1 · Air-assisted immersion cooling systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0098124 A1 - Document ID: US20250098124A1 - Status: Published application - Kind: A1 - Application number: 18/483,648 - Filed: 2023-10-10 - Published: 2025-03-20 - Earliest claimed: 2023-09-18 - Assignees: Dell Products L.P. - Applicants: Dell Products L.P. - Inventors: Xin Zhi Ma; Wan Hui Yang - Web page: https://patentgrep.com/patent/US20250098124A1 ## CPC - H05K 7/20836: {Thermal management, e.g. server temperature control} - H05K 7/20236: {by immersion} - H05K 7/20263: {Heat dissipaters releasing heat from coolant} - H05K 7/20272: {Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds} - H05K 7/20772: {within server blades for removing heat from heat source} - H05K 7/20781: {within cabinets for removing heat from server blades} - H05K 7/2079: {within rooms for removing heat from cabinets} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract In one or more embodiments, a liquid cooling system may include one or more air-assist modules (AAMs) for reducing the amount of liquid coolant needed to cool information handling systems immersed in the coolant. A controller communicatively coupled to a coolant pump, an inflation pump, a deflation valve and a coolant level sensor may determine when to add liquid coolant as well as when to increase or decrease the amount of air in the one or more air-assist modules based on the level of liquid coolant and a temperature of the coolant. ## Claims ### Claim 1 An air-assist cooling system for a liquid cooling system comprising a tank, a plurality of rails for mounting a plurality of information handling systems, a coolant pump for introducing a liquid coolant to immerse the plurality of information handling systems in the coolant and a coolant level sensor, the air-assist cooling system comprising: one or more air-assist modules (AAM) s mounted on a set of the plurality of rails; an inflation pump for introducing air into an AAM of the one or more AAMs; and a controller executing instructions to: communicate with the coolant level sensor to monitor a level of the coolant in the tank; and communicate with one or more of the coolant pump and the inflation pump to adjust an amount of the coolant in the tank. ### Claim 2 (depends on 1) The air-assist cooling system of claim 1, wherein the gas comprises air. ### Claim 3 (depends on 1) The air-assist cooling system of claim 1, further comprising a conduit coupling the inflation pump to one or more air inlet valves, wherein the controller executes instructions to selectively open an air inlet valve of the one or more air inlet valves to inflate the AAM. ### Claim 4 (depends on 1) The air-assist cooling system of claim 1, wherein one or more of the inflation pump and the deflation valve are integral with the AAM. ### Claim 5 (depends on 1) The air-assist cooling system of claim 1, wherein the controller executes instructions to adjust a ratio between the coolant and the air in the tank. ### Claim 6 (depends on 1) The air-assist cooling system of claim 1, wherein the controller executes instructions to adjust a flow of the coolant in the tank. ### Claim 7 (depends on 1) The air-assist cooling system of claim 1, wherein the controller executes instructions to adjust a heat exchange efficiency of the coolant in the tank. ### Claim 8 (depends on 1) The air-assist cooling system of claim 1, wherein the controller executes instructions to adjust a heat dissipation effect of the coolant in the tank. ### Claim 9 A cooling system for cooling a plurality of information handling systems, the cooling system comprising: a tank; a plurality of rails for mounting a plurality of information handling systems; a coolant pump for introducing a liquid coolant to immerse the plurality of information handling systems in the coolant; a coolant level sensor for detecting a level of the coolant in the tank; one or more air-assist modules (AAM) s mounted on a set of the plurality of rails; an inflation pump for introducing air into an AAM of the one or more AAMs; and a controller executing instructions to: communicate with the coolant level sensor to monitor a level of the coolant in the tank; and communicate with one or more of the coolant pump and the inflation pump to adjust an amount of the coolant in the tank. ### Claim 10 (depends on 9) The cooling system of claim 9, wherein the gas comprises air. ### Claim 11 (depends on 9) The cooling system of claim 9, further comprising a conduit coupling the inflation pump to one or more air inlet valves, wherein the controller executes instructions to selectively open an air inlet valve of the one or more air inlet valves to inflate the AAM. ### Claim 12 (depends on 9) The cooling system of claim 9, wherein one or more of the inflation pump and the deflation valve are integral with the AAM. ### Claim 13 (depends on 9) The cooling system of claim 9, wherein the controller executes instructions to adjust a ratio between the coolant and the air in the tank. ### Claim 14 (depends on 9) The cooling system of claim 9, wherein the controller executes instructions to adjust a flow of the coolant in the tank. ### Claim 15 (depends on 9) The cooling system of claim 9, wherein the controller executes instructions to adjust a heat exchange efficiency of the coolant in the tank. ### Claim 16 (depends on 9) The cooling system of claim 9, wherein the controller executes instructions to adjust a heat dissipation effect of the coolant in the tank. ### Claim 17 A method of cooling information handling systems, the method comprising: coupling an information handling system to a server rail of a plurality of server rails in a tank; coupling one or more air-assist modules (AAMs) to one or more rails of the plurality of rails; operating a coolant pump to introduce a liquid coolant into the tank; determining a level of the coolant in the tank; positioning an inflation pump relative to the one or more AAMs; determining, by a controller communicatively coupled to a coolant level sensor, a level of the coolant in the tank; and performing one or more of operating the coolant pump to pump the coolant into the tank, operating the inflation pump to displace at least a portion of the coolant from the AAM, and operating a deflation valve to remove at least a portion of the air from the AAM. ### Claim 18 (depends on 17) The method of claim 17, wherein performing one or more of operating the coolant pump to pump the coolant into the tank, operating the inflation pump to displace at least a portion of the coolant from the AAM, and operating a deflation valve to remove at least a portion of the air from the AAM comprises adjusting a ratio between the coolant and the air in the tank. ### Claim 19 (depends on 17) The method of claim 17, wherein performing one or more of operating the coolant pump to pump the coolant into the tank, operating the inflation pump to displace at least a portion of the coolant from the AAM, and operating a deflation valve to remove at least a portion of the air from the AAM comprises adjusting a heat exchange efficiency of the coolant in the tank. ### Claim 20 (depends on 17) The method of claim 17, wherein performing one or more of operating the coolant pump to pump the coolant into the tank, operating the inflation pump to displace at least a portion of the coolant from the AAM, and operating a deflation valve to remove at least a portion of the air from the AAM comprises adjusting a heat dissipation effect of the coolant in the tank.