| 摘要 |
The invention relates to a heat exchanger with a channel ( 4 ) through which cooling agent flows and a channel ( 3 ) through which fluid to be cooled flows, whereby ribs ( 6 ) project into at least one of the channels ( 3, 4 ). According to the invention, these ribs ( 6 ) feature a linear approach edge ( 11 ) and a linear flow-off edge ( 15 ), whereby the side walls ( 12 ) run continuously between the approach edge ( 11 ) and the flow-off edge ( 15 ). By these means it is achieved that a turbulent boundary layer forms at the ribs, which boundary layer ends in a turbulent eddy in the area of the flow-off edge ( 15 ). This leads to an increased efficiency of the heat exchanger and simultaneously to a good homogenization of the fluid. Moreover, sooting is reliably avoided.
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