US 12,396,141 B2
Cooling device and cooling method applied to rack server
Chia-Wei Chen, New Taipei (TW); Kun-Chieh Liao, New Taipei (TW); and Yueh-Ming Liu, New Taipei (TW)
Assigned to Super Micro Computer, Inc., San Jose, CA (US)
Filed by Super Micro Computer, Inc., San Jose, CA (US)
Filed on Feb. 28, 2023, as Appl. No. 18/176,291.
Claims priority of application No. 111141211 (TW), filed on Oct. 28, 2022.
Prior Publication US 2024/0147673 A1, May 2, 2024
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/20836 (2013.01) [H05K 7/20272 (2013.01); H05K 7/20281 (2013.01); H05K 7/20763 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cooling device for rack servers, comprising:
an environmental temperature sensor, configured to sense an ambient temperature;
a humidity sensor, configured to sense an ambient humidity;
a coolant temperature sensor, disposed on an output conduit outputting a coolant and configured to sense an outlet-liquid temperature of the coolant outputted from the output conduit;
an electronic valve, disposed on the output conduit; and
a controller, connected with the environmental temperature sensor, the humidity sensor, the coolant temperature sensor, and the electronic valve, configured to compute a dew point temperature according to the ambient temperature and the ambient humidity, compute a temperature difference between the outlet-liquid temperature and the dew point temperature, and control an opening of the electronic valve according to the temperature difference to adjust a liquid flow of the coolant outputted, such that the outlet-liquid temperature dynamically changes according to the liquid flow,
wherein the output conduit comprises a main conduit, a first branch conduit, and a second branch conduit, a first electronic valve is disposed on the first branch conduit, a second electronic valve is disposed on the second branch conduit, and the main conduit is respectively connected with the first branch conduit and the second branch conduit such that the coolant is outputted through either the first branch conduit or the second branch conduit, wherein the controller is configured to switch on the second electronic valve such that the coolant is outputted through the second branch conduit when determining that a failure of the first electronic valve occurs.