Cooling of the power components of a frequency converter

Abstract

Cooling arrangement for the power components ( 10 ) of a power transformer, in which is a cooler ( 12 ), which has a metal frame, to which the power components can be fitted, and cooling piping fitted inside the frame for removing thermal power from the power components by means of a flowing cooling medium, and a condenser ( 13 ) connected to the cooling piping, with which thermal power can be transferred out of the cooling piping. The cooler and the condenser have a shared metal frame ( 11 ), in which one part functions as the cooler part and the other part as the condenser part, and inside which is fitted the shared cooling piping of the cooler and the condenser for the flowing cooling medium.

1 . Cooling arrangement for the power components ( 10 ) of a power transformer, in which is a cooler ( 12 ), which has a metal frame, to which the power components can be fitted, and cooling piping fitted inside the frame for removing thermal power from the power components by means of a flowing cooling medium, and a condenser ( 13 ) connected to the cooling piping, with which thermal power can be transferred out of the cooling piping,
 characterized in that   the cooler and the condenser have a shared metal frame ( 11 ,  21 ,  31 ), in which one part functions as the cooler part and the other part as the condenser part, and inside which is fitted the shared cooling piping of the cooler and the condenser for the flowing cooling medium.   
   
   
       2 . Cooling arrangement according to  claim 1 ,
 characterized in that the cooling medium is liquid and the cooling medium piping contains channels for arranging enclosed liquid circulation.   
   
   
       3 . Cooling arrangement according to  claim 2 ,
 characterized in that turbulators are arranged in the channels for improving heat transfer.   
   
   
       4 . Cooling arrangement according to  claim 1 ,
 characterized in that the cooling medium is a liquid, which is circulated with a pump.   
   
   
       5 . Cooling arrangement according to  claim 1 ,
 characterized in that the piping contains heating pipes and the cooling medium is water under low pressure, which can be made to boil in the cooling part and to liquefy in the condenser part.   
   
   
       6 . Cooling arrangement according to  claim 1 ,
 characterized in that an array of fins is connected to the condenser part for transferring thermal power into the air duct e.g. forced by a fan.   
   
   
       7 . Cooling arrangement according to  claim 1 ,
 characterized in that a separate liquid element is connected to the condenser part for transferring thermal power to an external liquid circulation.   
   
   
       8 . Cooling arrangement according to  claim 1 ,
 characterized in that the frame of the cooling arrangement is simultaneously the whole frame of the transformer appliance or a part of it.   
   
   
       9 . Cooling arrangement according to  claim 1 ,
 characterized in that the frame is formed from two or more connected frame parts, which are each joined to the facing surface of the other, and in which are cooling piping parts that are fitted to each other.   
   
   
       10 . Cooling arrangement according to  claim 1 ,
 characterized in that the frame is formed from one frame piece.   
   
   
       11 . Cooling arrangement according to  claim 2 ,
 characterized in that an array of fins is connected to the condenser part for transferring thermal power into the air duct e.g. forced by a fan.   
   
   
       12 . Cooling arrangement according to  claim 3 ,
 characterized in that an array of fins is connected to the condenser part for transferring thermal power into the air duct e.g. forced by a fan.   
   
   
       13 . Cooling arrangement according to  claim 4 ,
 characterized in that an array of fins is connected to the condenser part for transferring thermal power into the air duct e.g. forced by a fan.   
   
   
       14 . Cooling arrangement according to  claim 5 ,
 characterized in that an array of fins is connected to the condenser part for transferring thermal power into the air duct e.g. forced by a fan.   
   
   
       15 . Cooling arrangement according to  claim 2 ,
 characterized in that a separate liquid element is connected to the condenser part for transferring thermal power to an external liquid circulation.   
   
   
       16 . Cooling arrangement according to  claim 3 ,
 characterized in that a separate liquid element is connected to the condenser part for transferring thermal power to an external liquid circulation.   
   
   
       17 . Cooling arrangement according to  claim 4 ,
 characterized in that a separate liquid element is connected to the condenser part for transferring thermal power to an external liquid circulation.   
   
   
       18 . Cooling arrangement according to  claim 5 ,
 characterized in that a separate liquid element is connected to the condenser part for transferring thermal power to an external liquid circulation.   
   
   
       19 . Cooling arrangement according to  claim 2 ,
 characterized in that the frame of the cooling arrangement is simultaneously the whole frame of the transformer appliance or a part of it.   
   
   
       20 . Cooling arrangement according to  claim 3 ,
 characterized in that the frame of the cooling arrangement is simultaneously the whole frame of the transformer appliance or a part of it.