Patent ID: 8004158

Claim:
Device for cooling ultrasonic transducers, comprising at least one piezo stack ( 4 ) and at least two cylindrical transducer bodies ( 5 ), which together with the piezo stack ( 4 ) form a λ/2 oscillator, wherein two corresponding transducer bodies can be combined as multiple transducer arrangements to form a unitary transducer body ( 6 ), characterized in that the transducer bodies ( 5 , 6 ) are surrounded by an interior space ( 11 ) and an exterior space ( 14 ), and that at least one of the at least two transducer bodies ( 5 , 6 ) includes at least one flow-through channel ( 7 ), through which a cooling liquid introduced under pressure can flow, and/or that at least one connecting channel ( 15 ) is arranged between the interior space ( 11 ) and the exterior space ( 14 ), wherein the cooling liquid flows directly through the transducer bodies ( 5 , 6 ) through the flow-through channel ( 7 ) and/or directly around the transducer bodies ( 5 , 6 ) through the interior space ( 11 ), wherein at least one flow-through channel ( 7 ) is formed as a slit and wherein the device further comprises a tensioning rod ( 3 ) arranged in a hollow space ( 11 ) formed by at least two transducer bodies ( 5 , 6 ) and having at least one opening and at least one guide channel ( 13 ), through which the cooling liquid introduced under pressure can flow, and wherein the device is equipped in such a manner that the cooling liquid can be supplied through the at least one guide channel ( 13 ) and removed through the at least one flow-through channel ( 7 ), and that the cooling liquid can be supplied through the at least one flow-through channel ( 7 ) and removed through the at least one guide channel ( 13 ) disposed in the tensioning rod ( 3 ).