# US 10,874,032 B2 · Rotatable cold plate assembly for cooling pluggable modules > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,874,032 B2 - Document ID: US10874032B2 - Status: Granted - Kind: B2 - Application number: 16/397,414 - Filed: 2019-04-29 - Published: 2020-08-13 - Granted: 2020-12-22 - Earliest claimed: 2018-10-31 - Assignees: Hewlett Packard Enterprise Development LP - Applicants: Hewlett Packard Enterprise Development LP - Inventors: Kevin B. Leigh; John Norton; Sunil Ganta - Web page: https://patentgrep.com/patent/US10874032B2 ## CPC - H05K 7/20636: {within sub-racks for removing heat from electronic boards} - G06F 1/187: Mounting of fixed or removable disk drives - G06F 1/20: Cooling means - H05K 7/1427: {Housings} - H05K 7/20645: {within cabinets for removing heat from sub-racks} - H10W 40/47: by flowing liquids, e.g. forced water cooling - H10W 40/73: for cooling by change of state - G06F 2200/201: Cooling arrangements using cooling fluid - H10W 40/60: Securing means for detachable heating or cooling arrangements, e.g. clamps - 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) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract An example computing device includes one or more bays to receive a pluggable module, and a cold plate assembly. The cold plate assembly includes one or more cold plates to engage with the pluggable modules and transfer heat from the modules to liquid coolant. The cold plate assembly also includes a pivoting support that supports the cold plate(s) and pivots relative to the system board, and an engagement mechanism comprising a mechanical linkage with mechanical advantage attached to the pivoting support such that moving a link of the mechanical linkage causes the pivoting support to pivot between an engaged position and a disengaged position. In the engaged position, the cold plate contacts is positioned to engaged with the pluggable module, while in the disengaged position the cold plate is disengaged from the pluggable module. ## Claims ### Claim 1 A device, comprising: a system board; a bay to receive a pluggable module such that the pluggable module is electrically connecting to the system board; and a cold plate assembly comprising: a cold plate to transfer heat to liquid coolant; a pivoting support that supports the cold plate and pivots relative to the system board; an engagement mechanism comprising a mechanical linkage with a mechanical advantage attached to the pivoting support such that moving a link of the mechanical linkage causes the pivoting support to pivot between an engaged position and a disengaged position; and radial springs connecting the cold plate to the pivoting support, wherein each of the radial springs allows the cold plate to translate in two dimensions relative to the pivoting support and to rotate around an axis of the cold plate and provides a restoring spring force responsive to the cold plate moving relative to the pivoting support, wherein, if the pivoting support is in the engaged position and the pluggable module is installed in the bay, the cold plate is in contact with a thermal interface of the pluggable module, and if the pivoting support is in the disengaged position and the pluggable module is installed in the bay, the cold plate is not in contact with the thermal interface of the pluggable module. ### Claim 2 (depends on 1) The device of claim 1, wherein the engagement mechanism includes an electrical actuator connected to the mechanical linkage and configured to cause the pivoting support to move between the engaged position and the disengaged position by moving the link. ### Claim 3 (depends on 2) The device of claim 2, comprising: control circuitry configured to, responsive to the pluggable module being installed in the bay, automatically control the electrical actuator to move the pivoting support into the engaged position. ### Claim 4 (depends on 3) The device of claim 3, wherein the control circuitry is configured to automatically detect whether the pluggable module is installed in the bay by monitoring a signal from an electrical connector of the bay. ### Claim 5 (depends on 3) The device of claim 3, wherein the control circuitry is to, responsive to an eject request, control the electrical actuator to move the pivoting support into the disengaged position. ### Claim 6 (depends on 2) The device of claim 2, wherein the electrical actuator includes a solenoid. ### Claim 7 (depends on 1) The device of claim 1, comprising: a locking pin connected to the pivoting support and configured to, when the pivoting support is in the engaged position and the pluggable module is installed in the bay, engage with the pluggable module to prevent removal of the pluggable module from the bay. ### Claim 8 (depends on 1) The device of claim 1, wherein the engagement mechanism includes an engagement lever connected to the mechanical linkage and extending outside of the bay to allow manual actuation. ### Claim 9 (depends on 8) The device of claim 8, wherein the engagement lever includes curtain tabs to interact with tabs of the pluggable module to prevent actuation of the engagement lever if the pluggable module is in the bay and is not yet electrically engaged with an electrical connector of the bay. ### Claim 10 (depends on 1) The device of claim 1, comprising: a second bay to receive a second pluggable module; wherein the cold plate assembly includes a second cold plate that is connected to the pivoting support such that, when the pivoting support is in the engaged position, the second cold plate is located such that would be in contact with a thermal interface of the second pluggable module if the second pluggable module were installed in the second bay. ### Claim 11 (depends on 10) The device of claim 10, wherein the engagement mechanism includes an engagement lever connected to the mechanical linkage and extending outside of the bay. ### Claim 12 (depends on 1) A method, comprising: providing the device of claim 1; inserting the pluggable module into the bay; and causing the pivoting support move into the engaged position, wherein each of the radial springs allows the cold plate to translate in two dimensions relative to the pivoting support and to rotate around an axis of the cold plate and provides a restoring spring force responsive to the cold plate moving relative to the pivoting support. ### Claim 13 (depends on 1) A computing system, comprising: the device of claim 1; and the pluggable module. ### Claim 14 (depends on 13) The computing system of claim 13, wherein the pluggable module includes an electro-optical transceiver.