Cooling of the electronics of an electrically operated device

Abstract

A cooling system for cooling the components of an electrically driven rotating device, in which system the rotating part ( 4 ) of the device produces a current of a medium, such as air, the electric drive consisting of an electric motor ( 5 ) for rotating the device and an electronic control unit ( 6 ) controlling it, and which cooling system comprises at least one cooling element ( 62 ) for cooling the components. The cooling element ( 62 ) is disposed near the flow created by the rotating part ( 4 ) so that the heat produced by the components can be transmitted either directly and/or via a thermally conductive means to the current of cooling medium ( 63 ) created by the rotating device.

1 . Cooling system for cooling the electronic components of an electrically driven rotating device, wherein the rotating part ( 4 ) of the device produces a flow of a medium, such as air, the electric drive consisting of an electric motor ( 5 ) for rotating the device and an electronic control unit ( 6 ) controlling it, and which cooling system comprises at least one cooling element ( 62 ) for cooling the components, 
 characterized in that the cooling element ( 62 ) is disposed near the flow generated by the rotating part ( 4 ) so that the heat produced by the components can be transmitted either directly and/or via at least one thermally conductive means to the flow ( 63 ) of cooling medium produced by the rotating device.    
     
     
         2 . Cooling system as defined in  claim 1 , characterized in that the cooling element ( 62 ) has been fitted near the rotating part ( 4 ) so that they form a gap ( 63 ) for the flow of a flowing medium between them.  
     
     
         3 . Cooling system as defined in  claim 1 , characterized in that the cooling element and/or the components are fitted on a fixed part ( 5 ) of the device near the rotating part so that a gap for the flow of a flowing medium for cooling the components is formed between the fixed part and the rotating part.  
     
     
         4 . Cooling system as defined in  claim 1 , characterized in that the device is provided with a channel structure for passing the flow of a medium generated by the rotating part ( 4 ) to the vicinity of the components so that the heat produced by the components can be transmitted either directly and/or via a thermally conductive means to the flow of cooling medium produced by the rotating device.  
     
     
         5 . Cooling system as defined in  claim 1  in a device having a housing ( 2 ), characterized in that it comprises inside the housing ( 2 ) a housing part ( 24 ) for a cooling element so that the cooling element ( 62 ) can be fitted near the flow generated by the rotating part ( 4 ) in such manner that the heat produced by the components can be transmitted either directly and/or via a thermally conductive means to the flow ( 63 ) of cooling medium produced by the rotating device.