Patent ID: 8284004

Claim:
A transformer apparatus, said apparatus comprising: a conduction cooled electrical transformer mounted to a cold plate; and a heat pipe for supplementing cooling of said transformer, said heat pipe comprising a first end, a second end, and a sealed low pressure cavity between the first end and the second end, the sealed low pressure cavity containing an amount of a fluid, wherein said sealed low pressure cavity is disposed entirely exterior to a transformer core and a transformer winding, the sealed low pressure cavity having a bend of about 90 degrees to permit the sealed low pressure cavity to bend around an exterior of the transformer; said first end of said heat pipe is located in a hot region of said transformer, said second end is maintained colder than said first end by contact with said cold plate, and heat produced at said first end by operation of said transformer is moved to said second end by a closed loop vapor cycle in said sealed low pressure cavity using said fluid of said heat pipe.