| 摘要 |
The invention relates to a heat exchanger, particularly an exhaust heat exchanger ( 1 ) for an internal combustion engine. The heat exchanger ( 1 ) has a tubular housing ( 2 ) a housing section of which is surrounded on the outside by a duct housing ( 9 ) with an annular duct ( 10 ) being formed. The duct housing ( 9 ) has a coolant connection (connecting branch 12 ) and, in the housing section which is covered by the duct housing ( 9 ), passage openings ( 13 to 16 ) which are distributed over the circumference and via which a uniform distribution of the coolant in the interior of the housing ( 2 ) is obtained. It is advantageous, in the case of a heat exchanger ( 1 ) with an expansion element ( 18 ), to use the annular duct ( 10 ) and the passage openings ( 13 to 16 ) at the same time in order to form the expansion element ( 18 ). |
