US 11,723,176 B2
Multi-tier cooling system without load perception
Tianyi Gao, San Jose, CA (US)
Assigned to BAIDU USA LLC, Sunnyvale, CA (US)
Filed by Baidu USA LLC, Sunnyvale, CA (US)
Filed on Jun. 22, 2021, as Appl. No. 17/354,854.
Prior Publication US 2022/0408602 A1, Dec. 22, 2022
Int. Cl. G06F 1/20 (2006.01); H05K 7/20 (2006.01)
CPC H05K 7/20381 (2013.01) [G06F 1/206 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cooling system, comprising:
a main system positioned above an information technology (IT) load, wherein the main system includes a main condenser to receive vapor from the IT load, condense the received vapor into liquid, and distribute the liquid back to the IT load; and
an auxiliary system, positioned above the IT load and above the main system, the auxiliary system including:
a vapor container connected to the IT load via a vapor line,
an auxiliary condenser to receive vapor from the vapor container via a compressor, and to condense the vapor into liquid to be stored in a liquid container; and
a cooling controller to regulate a vapor valve on the vapor line based on a vapor pressure in the IT load to control a volume of vapor passed from the IT load to the vapor container, and regulate the compressor based on operating states of the vapor container and the liquid container.