SYSTEM OF PASSIVE COOLING WITH A TWO-PHASE FLUID ENVIRONMENT, IN PARTICULATOR, FOR COOLING ELECTRONIC EQUIPMENT, FOR EXAMPLE, AVIONICS DEVICES

摘要

The cooling system (10) comprises: at least one plate member (12) forming a wall of a casing inside which the electronic apparatus to be cooled is accommodated in use, the plate member (12) having a first side (12a) facing in use towards the apparatus and a second side (12b) opposite to the first side (12a); and a fluid circuit (14) formed in the plate member (12), wherein the fluid circuit (14) comprises a first duct (14a) formed on the first side (12a) of the plate member (12) and extending along a first labyrinth path and a second duct (14b) formed on the second side (12b) of the plate member (12) and extending along a second labyrinth path. The plate member (12) has a first through hole (18) and a second through hole (20) through which the first duct (14a) and the second duct (14b) are in in fluid communication with each other. The fluid circuit (14) further comprises a porous separation element (22) which is placed in the first through hole (18) and through which a working fluid flows by capillarity from the second duct (14b) to the first duct (14a), the working fluid being in vapour phase in the first duct (14a) and in liquid phase in the second duct (14b).