# US 12,764,903 B2 · Liquid-assisted and thermoelectric-based temperature control for servers and other electronic equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,903 B2 - Document ID: US12764903B2 - Status: Granted - Kind: B2 - Application number: 18/665,717 - Filed: 2024-05-16 - Published: 2025-11-06 - Granted: 2026-10-13 - Earliest claimed: 2024-05-06 - Assignees: Dell Products L.P. - Applicants: Dell Products L.P. - Inventors: Zhuoya Shi; Xin Zhi Ma - Web page: https://patentgrep.com/patent/US12764903B2 ## CPC - 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} - G06F 1/206: {comprising thermal management} - H05K 7/20727: {within server blades for removing heat from heat source} - G06F 2200/201: Cooling arrangements using cooling fluid - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An apparatus in one embodiment comprises an electronic equipment chassis having electronic equipment installed therein, a thermoelectric module arranged adjacent a front portion of the electronic equipment chassis, a heat exchanger module arranged adjacent a rear portion of the electronic equipment chassis, and at least first and second liquid-carrying conduits coupled between the thermoelectric module and the heat exchanger module and passing through at least a portion of the electronic equipment chassis. The thermoelectric module, the heat exchanger module and the liquid-carrying conduits are collectively configured to provide temperature control for one or more components of the electronic equipment. The electronic equipment installed in the electronic equipment chassis may comprise at least one server. The thermoelectric module illustratively comprises a thermoelectric cooler, a cold plate coupled to a first side of the thermoelectric cooler, and a heatsink coupled to a second side of the thermoelectric cooler, opposite the first side. ## Claims ### Claim 1 An apparatus comprising: an electronic equipment chassis having electronic equipment installed therein; a thermoelectric module arranged adjacent a front portion of the electronic equipment chassis; a heat exchanger module arranged adjacent a rear portion of the electronic equipment chassis; and at least first and second liquid-carrying conduits coupled between the thermoelectric module and the heat exchanger module and passing through at least a portion of the electronic equipment chassis; wherein each of the liquid-carrying conduits is connected at a first end thereof to a cold plate of the thermoelectric module and at a second end thereof to the heat exchanger module; and wherein the thermoelectric module, the heat exchanger module and the liquid-carrying conduits are collectively configured to provide temperature control for one or more components of the electronic equipment. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein the electronic equipment installed in the electronic equipment chassis comprises at least one server. ### Claim 3 (depends on 1) The apparatus of claim 1 wherein the thermoelectric module is at least one of coupled to an exterior surface of the front portion of the electronic equipment chassis and coupled to a front portion of an electronic equipment rack in which the electronic equipment chassis is installed. ### Claim 4 (depends on 1) The apparatus of claim 1 wherein the thermoelectric module comprises: a thermoelectric cooler; the cold plate, coupled to a first side of the thermoelectric cooler; and a heatsink coupled to a second side of the thermoelectric cooler opposite the first side. ### Claim 5 (depends on 1) The apparatus of claim 1 wherein the heat exchanger module is at least one of coupled to an exterior surface of the rear portion of the electronic equipment chassis and coupled to a rear portion of an electronic equipment rack in which the electronic equipment chassis is installed. ### Claim 6 (depends on 1) The apparatus of claim 1 wherein the heat exchanger module comprises a heat exchanger and a pump, the pump being configured to circulate liquid through the thermoelectric module, the heat exchanger and the liquid-carrying conduits. ### Claim 7 (depends on 1) The apparatus of claim 1 wherein in a cooling mode of operation, a control current is applied to a thermoelectric cooler of the thermoelectric module to configure a first side of the thermoelectric cooler adjacent the cold plate of the thermoelectric module as a hot side of the thermoelectric cooler, and to configure a second side of the thermoelectric cooler adjacent a heatsink of the thermoelectric module as a cold side of the thermoelectric cooler, with the heat exchanger module moving hot water from the hot side of the thermoelectric cooler via the cold plate and the first liquid-carrying conduit into the heat exchanger module, and moving cool water from the heat exchanger module back to the hot side of the thermoelectric cooler via the second liquid-carrying conduit and the cold plate, and with cool air generated from the cold side of the thermoelectric cooler being pulled from the front portion of the electronic equipment chassis to the rear portion of the electronic equipment chassis to cool the one or more components of the electronic equipment. ### Claim 8 (depends on 1) The apparatus of claim 1 wherein in a heating mode of operation, a control current is applied to a thermoelectric cooler of the thermoelectric module to configure a first side of the thermoelectric cooler adjacent the cold plate of the thermoelectric module as a cold side of the thermoelectric cooler, and to configure a second side of the thermoelectric cooler adjacent a heatsink of the thermoelectric module as a hot side of the thermoelectric cooler, with the heat exchanger module moving cool water from the cold side of the thermoelectric cooler via the cold plate and the first liquid-carrying conduit into the heat exchanger module, and moving hot water from the heat exchanger module back to the cold side of the thermoelectric cooler via the second liquid-carrying conduit and the cold plate, and with warm air generated from the hot side of the thermoelectric cooler being pulled from the front portion of the electronic equipment chassis to the rear portion of the electronic equipment chassis to heat the one or more components of the electronic equipment. ### Claim 9 (depends on 1) The apparatus of claim 1 wherein in an additional mode of operation, an amount of control current applied to a thermoelectric cooler of the thermoelectric module is adjusted such that neither a first side of the thermoelectric cooler adjacent the cold plate nor a second side of the thermoelectric cooler adjacent a heatsink is configured as a cold side or a hot side, and neither cooling nor heating is provided. ### Claim 10 A method comprising: providing an electronic equipment chassis having electronic equipment installed therein; deploying a thermoelectric module arranged adjacent a front portion of the electronic equipment chassis, a heat exchanger module arranged adjacent a rear portion of the electronic equipment chassis, and at least first and second liquid-carrying conduits coupled between the thermoelectric module and the heat exchanger module and passing through at least a portion of the electronic equipment chassis, wherein each of the liquid-carrying conduits is connected at a first end thereof to a cold plate of the thermoelectric module and at a second end thereof to the heat exchanger module; and providing temperature control for one or more components of the electronic equipment utilizing the thermoelectric module, the heat exchanger module and the liquid-carrying conduits. ### Claim 11 (depends on 10) The method of claim 10 wherein providing temperature control further comprises, in a cooling mode of operation, applying a control current to a thermoelectric cooler of the thermoelectric module to configure a first side of the thermoelectric cooler adjacent the cold plate of the thermoelectric module as a hot side of the thermoelectric cooler, and to configure a second side of the thermoelectric cooler adjacent a heatsink of the thermoelectric module as a cold side of the thermoelectric cooler, with the heat exchanger module moving hot water from the hot side of the thermoelectric cooler via the cold plate and the first liquid-carrying conduit into the heat exchanger module, and moving cool water from the heat exchanger module back to the hot side of the thermoelectric cooler via the second liquid-carrying conduit and the cold plate, and with cool air generated from the cold side of the thermoelectric cooler being pulled from the front portion of the electronic equipment chassis to the rear portion of the electronic equipment chassis to cool the one or more components of the electronic equipment. ### Claim 12 (depends on 10) The method of claim 10 wherein providing temperature control further comprises, in a heating mode of operation, applying a control current to a thermoelectric cooler of the thermoelectric module to configure a first side of the thermoelectric cooler adjacent the cold plate of the thermoelectric module as a cold side of the thermoelectric cooler, and to configure a second side of the thermoelectric cooler adjacent a heatsink of the thermoelectric module as a hot side of the thermoelectric cooler, with the heat exchanger module moving cool water from the cold side of the thermoelectric cooler via the cold plate and the first liquid-carrying conduit into the heat exchanger module, and moving hot water from the heat exchanger module back to the cold side of the thermoelectric cooler via the second liquid-carrying conduit and the cold plate, and with warm air generated from the hot side of the thermoelectric cooler being pulled from the front portion of the electronic equipment chassis to the rear portion of the electronic equipment chassis to heat the one or more components of the electronic equipment. ### Claim 13 (depends on 10) The method of claim 10 wherein providing temperature control further comprises, in an additional mode of operation, adjusting an amount of control current applied to a thermoelectric cooler of the thermoelectric module such that neither a first side of the thermoelectric cooler adjacent the cold plate nor a second side of the thermoelectric cooler adjacent a heatsink is configured as a cold side or a hot side, and neither cooling nor heating is provided. ### Claim 14 An apparatus comprising: an electronic equipment rack; a plurality of electronic equipment chassis installed in the electronic equipment rack, each electronic equipment chassis having electronic equipment installed therein; a thermoelectric module arranged adjacent a front portion of at least a given one of the electronic equipment chassis; a heat exchanger module arranged adjacent a rear portion of the given electronic equipment chassis; and at least first and second liquid-carrying conduits coupled between the thermoelectric module and the heat exchanger module and passing through at least a portion of the given electronic equipment chassis; wherein each of the liquid-carrying conduits is connected at a first end thereof to a cold plate of the thermoelectric module and at a second end thereof to the heat exchanger module; and wherein the thermoelectric module, the heat exchanger module and the liquid-carrying conduits are collectively configured to provide temperature control for one or more components of the electronic equipment installed in the given electronic equipment chassis. ### Claim 15 (depends on 14) The apparatus of claim 14 wherein separate instances of the thermoelectric module are arranged adjacent respective front portions of respective ones of the electronic equipment chassis installed in the electronic equipment rack. ### Claim 16 (depends on 14) The apparatus of claim 14 wherein the thermoelectric module comprises: a thermoelectric cooler; the cold plate, coupled to a first side of the thermoelectric cooler; and a heatsink coupled to a second side of the thermoelectric cooler opposite the first side. ### Claim 17 (depends on 14) The apparatus of claim 14 wherein separate instances of the heat exchanger module are arranged adjacent respective rear portions of respective ones of the electronic equipment chassis installed in the electronic equipment rack. ### Claim 18 (depends on 14) The apparatus of claim 14 wherein a single instance of the heat exchanger module is arranged adjacent respective rear portions of respective ones of the electronic equipment chassis installed in the electronic equipment rack. ### Claim 19 (depends on 14) The apparatus of claim 14 wherein the heat exchanger module comprises a heat exchanger and a pump, the pump being configured to circulate liquid through the thermoelectric module, the heat exchanger and the liquid-carrying conduits. ### Claim 20 (depends on 14) The apparatus of claim 14 wherein in a cooling mode of operation, a control current is applied to a thermoelectric cooler of the thermoelectric module to configure a first side of the thermoelectric cooler adjacent the cold plate of the thermoelectric module as a hot side of the thermoelectric cooler, and to configure a second side of the thermoelectric cooler adjacent a heatsink of the thermoelectric module as a cold side of the thermoelectric cooler, with the heat exchanger module moving hot water from the hot side of the thermoelectric cooler via the cold plate and the first liquid-carrying conduit into the heat exchanger module, and moving cool water from the heat exchanger module back to the hot side of the thermoelectric cooler via the second liquid-carrying conduit and the cold plate, and with cool air generated from the cold side of the thermoelectric cooler being pulled from the front portion of the electronic equipment chassis to the rear portion of the electronic equipment chassis to cool the one or more components of the electronic equipment.