Device for cooling electrical equipment in a turbomachine

Abstract

A device for cooling electrical or electronic equipment in a turbomachine, such as a unit for controlling actuators for variable-geometry elements, the device comprising at least one vortex tube having an inlet connected to means for feeding pressurized air taken from an element of the turbomachine, and a cold air outlet connected to means for cooling the electrical equipment.

1 . A device for cooling electrical equipment in a turbomachine, the device comprising at least one vortex tube having an inlet connected to pressurized air feed means, and a cold air outlet connected to means for cooling the electrical equipment, wherein the vortex tube is fed with pressurized air via a heat exchanger having a secondary circuit fed with cooling fluid by the outlet of the means for cooling the electrical equipment or by the hot air outlet of the vortex tube. 
   
   
       2 . A device according to  claim 1 , wherein the pressurized air feed means comprise means for taking air from an annular duct for passing a flow of cool air or a secondary flow of the turbomachine. 
   
   
       3 . A device according to  claim 1 , wherein the pressurized air feed means comprise means for taking air from a compressor of the turbomachine. 
   
   
       4 . A device according to  claim 1 , wherein the pressurized air feed means comprise an auxiliary compressor driven by an accessory gearbox of the turbomachine. 
   
   
       5 . A device according to  claim 1 , wherein the heat exchanger includes two secondary circuits fed with cooling air, one by the outlet from the means for cooling the electrical equipment, and the other by the hot air outlet from the vortex tube. 
   
   
       6 . A device according to  claim 1 , wherein the vortex tube is fed with air at a pressure of a few bars. 
   
   
       7 . A device according to  claim 1 , wherein the temperature of the cold air leaving the vortex tube is about 50° C. lower than the temperature of the pressurized air. 
   
   
       8 . A device according to  claim 1 , wherein the vortex tube is of the double-circuit type and includes a second inlet connected to the pressurized air feed means. 
   
   
       9 . A device according to  claim 1 , including a plurality of vortex tubes associated in series or in parallel. 
   
   
       10 . A turbomachine, including a device according to  claim 1  for cooling electrical equipment.