US 11,785,748 B2
Backup cooling for a data center and servers
Tianyi Gao, San Jose, CA (US)
Assigned to BAIDU USA LLC, Sunnyvale, CA (US)
Filed by Baidu USA LLC, Sunnyvale, CA (US)
Filed on May 29, 2020, as Appl. No. 16/887,354.
Prior Publication US 2021/0378151 A1, Dec. 2, 2021
Int. Cl. G06F 1/20 (2006.01); H05K 7/20 (2006.01); G05B 15/02 (2006.01)
CPC H05K 7/20836 (2013.01) [G05B 15/02 (2013.01); H05K 7/2079 (2013.01); H05K 7/20172 (2013.01); H05K 7/20181 (2013.01); H05K 7/20209 (2013.01); H05K 7/20745 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cooling arrangement of a data center having a plurality of electronic racks, comprising:
an active cooling system having a blower for recirculating interior air inside the data center, a heat exchanger removing heat from the interior air, and ducting directing the interior air through the heat exchanger;
a plurality of intake louvers assuming a closed position separating an interior space of the data center from an exterior environment and an open position enabling a free flow of outside air into the interior space;
a plurality of exhaust louvers assuming a closed position separating the interior space of the data center from the exterior environment and an open position enabling a free flow of interior air out to the exterior environment;
a controller configured to monitor an electrical power supply to the active cooling system and direct the intake louvers and exhaust louvers to assume the open position in response to interruption of the electrical power supply to the active cooling system;
cooling liquid piping, wherein the cooling liquid piping assumes an open loop configuration having a first fluid flow route during a normal mode of operations and a closed loop configuration having a second fluid flow route during a backup mode of operations, wherein the first fluid flow route and the second fluid route are different.