Patent ID: 7632336
Filing Date: 2009-12-15
Classification: B01D

Abstract:
1. An apparatus for the batch degassing of a dielectric oil, said apparatus comprising: a tank for holding dielectric oil transferred from an electronic device; at least one ultrasonic transducer for generating ultrasonic frequency waves within said tank; a vacuum pump connected to said tank and capable of reducing the ambient pressure within said tank; a first and a second fluid transfer conduit adapted to connect said tank to said electronic device for transfer of oil therebetween; a vent valve connected to said first fluid transfer conduit, which when open allows ambient air external to said tank and said electronic device to enter said first fluid transfer conduit; a fluid pump connected to said second fluid transfer conduit and capable of pumping oil in a first flow direction from said tank to said electronic device through said second fluid transfer conduit; and a pressure relief valve having an inlet and an outlet, said inlet connected to said second fluid transfer conduit at a position after said fluid pump along said first flow direction, said outlet connected to said tank, said pressure relief valve allowing flow therethrough in a direction from said second fluid transfer conduit to said tank when fluid pressure in said second fluid transfer conduit reaches a threshold value set for the purpose of protecting said electronic device from experiencing fluid pressures higher than said threshold value.