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1. WO2021063934 - EMBEDDED MICROFLUIDIC DISTRIBUTION APPARATUS FOR PASSIVELY COOLING OPTOELECTRONIC DEVICES

Publication Number WO/2021/063934
Publication Date 08.04.2021
International Application No. PCT/EP2020/077206
International Filing Date 29.09.2020
IPC
F28D 15/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
15Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls
02in which the medium condenses and evaporates, e.g. heat-pipes
F28D 15/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
15Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls
02in which the medium condenses and evaporates, e.g. heat-pipes
06Control arrangements therefor
H01S 5/024 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
024Cooling arrangements
Applicants
  • NOKIA SOLUTIONS AND NETWORKS OY [FI]/[FI]
Inventors
  • AMALFI, Raffaele Luca
  • GRILLANDA, Stefano
Agents
  • SWINDELL & PEARSON LIMITED
Priority Data
16/844,90409.04.2020US
62/910,73504.10.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EMBEDDED MICROFLUIDIC DISTRIBUTION APPARATUS FOR PASSIVELY COOLING OPTOELECTRONIC DEVICES
(FR) APPAREIL DE DISTRIBUTION MICROFLUIDIQUE INTÉGRÉ POUR REFROIDISSEMENT PASSIF DE DISPOSITIFS OPTOÉLECTRONIQUES
Abstract
(EN)
A device and method are provided for more efficient thermal management of optoelectronic devices. A microfluidic distribution apparatus embedded with the optoelectronic device uses a working fluid in phase change to passively remove heat from an optoelectronic device. The working fluid undergoes phase change through various conversions between a liquid state and a two-phase liquid-vapor state to facilitate evaporation and condensation processes as the working fluid is distributed through micro- structures in the embedded microfluidic distribution apparatus. Passive two-phase cooling provides high thermal performance due to the use of the latent heat of a fluid in phase change, as well as the presence of favorable two-phase flow regimes at micro- scale dimensions.
(FR)
L'invention concerne un dispositif et un procédé pour une gestion thermique plus efficace de dispositifs optoélectroniques. Un appareil de distribution microfluidique intégré au dispositif optoélectronique utilise un fluide actif en changement de phase pour retirer passivement de la chaleur d'un dispositif optoélectronique. Le fluide actif subit un changement de phase par diverses conversions entre un état liquide et un état liquide-vapeur à deux phases afin de faciliter des processus d'évaporation et de condensation lorsque le fluide actif est distribué à travers des microstructures dans l'appareil de distribution microfluidique intégré. Le refroidissement passif à deux phases fournit une performance thermique élevée en raison de l'utilisation de la chaleur latente d'un fluide en changement de phase, ainsi que la présence de régimes d'écoulement à deux phases favorables à des dimensions microscopiques.
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