Refrigeration cooled transformer

Abstract

Apparatus for cooling a conventional oil filled electrical transformer by using a conventional refrigeration unit. The transformer liquid coolant may be either circulated through a remotely located heat exchanger cooled by an electrical refrigeration unit, or the heat exchanger may be directly located within the transformer's housing and within its liquid coolant.

1 . In combination, an electrical transformer of substantially conventional construction having a housing and a liquid coolant therein, an electrically operated refrigeration unit, and a heat exchanger cooled by said refrigeration unit in communication with the liquid coolant within said transformer housing to cool said liquid coolant.  
     
     
         2 . In a combination as in  claim 1 , said heat exchanger being remotely located with respect to said transformer housing, a liquid coolant inlet defined in said housing, a liquid coolant outlet defined in said housing, a liquid coolant inlet defined in said heat exchanger, a liquid coolant outlet defined in said heat exchanger, a first conduit system interconnecting said housing inlet with said heat exchanger outlet, and a second conduit system interconnecting said housing outlet with said heat exchanger inlet.  
     
     
         3 . In a combination as in  claim 1 , said heat exchanger being located within said transformer housing within said liquid coolant therein, a refrigerant inlet defined in said housing in connection with said heat exchanger, a refrigerant outlet defined in said housing in communication with said heat exchanger, a first conduit system interconnecting said refrigerant inlet with said refrigeration unit and a second conduit system interconnecting said refrigerant outlet with said refrigeration unit.  
     
     
         4 . In a combination as in claims  2  and  3 , said first and second conduit systems including quick-connect couplings adjacent said transformer housing.  
     
     
         5 . In a combination as in  claim 2 , a plurality of transformers each having a housing, said first conduit system including a liquid coolant pump.