US 11,868,189 B2
Systems and methods for controlling leaks in liquid cooling systems for computer devices
Chao-Jung Chen, Taoyuan (TW); Yu-Nien Huang, Taoyuan (SL); Sin-Hong Lien, Taoyuan (TW); and Jen-Mao Chen, Taoyuan (TW)
Assigned to QUANTA COMPUTER INC., Taoyuan (TW)
Filed by QUANTA COMPUTER INC., Taoyuan (TW)
Filed on Oct. 29, 2021, as Appl. No. 17/514,479.
Claims priority of provisional application 63/260,816, filed on Sep. 1, 2021.
Prior Publication US 2023/0068535 A1, Mar. 2, 2023
Int. Cl. G06F 1/20 (2006.01); H05K 7/20 (2006.01); G06F 1/02 (2006.01)
CPC G06F 1/02 (2013.01) [H05K 7/20272 (2013.01); H05K 7/20281 (2013.01); G06F 2200/201 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A liquid cooling system for a plurality of computing devices in a rack, the liquid cooling system comprising:
a closed liquid conveyance system;
the plurality of computing devices stacked in the rack, each computing device having a housing enclosing
a heat-generating computing system,
a thermal contact structure for cooling the heat-generating computing system,
a first valve positioned within the closed liquid conveyance system, the first valve controlling flow of cooling liquid out of the thermal contact structure,
a second valve positioned within the closed liquid conveyance system, the second valve controlling flow of the cooling liquid into the thermal contact structure,
a liquid leak detection sensor positioned at the heat-generating computer system below the closed liquid conveyance system;
a hot rack manifold directly connected to the first valve of all of the plurality of computing devices via the closed liquid conveyance system to provide a return flow of heated cooling liquid from the thermal contact structure;
a cool rack manifold directly connected to the second valve of all of the plurality of computing devices via the closed liquid conveyance system to supply flow of cooled cooling liquid into the thermal contact structure, the hot rack manifold being located between the cool rack manifold and the plurality of computing devices; and
a control system electrically connected to the liquid leak detection sensor, the first valve, and the second valve, the control system configured to
determine if an electrical signal was received from the liquid leak detection sensor indicative of a leak in the closed liquid conveyance system,
in response to determining a received electrical signal is indicative of the leak, switch off power to a respective heat generating computing system of the plurality of computing devices, and
in response to determining the received electrical signal is indicative of the leak, transmit one or more electrical signals to implement moving the first valve and the second valve of the respective computing device of the plurality of computing devices from open positions to closed positions, thereby limiting movement of the cooling liquid along the closed liquid conveyance system from the hot rack manifold and into the cool rack manifold.