| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust heat exchanger which inhibits accumulation of condensed water while improving the processability.SOLUTION: An exhaust heat exchanger includes: a core part 115 having a tube 110 in which exhaust air circulates; a core plate 140 connected with a longitudinal end part of the tube 110; and a casing 130 which is disposed so as to cover the core part 115 and formed to circulate a coolant. The core plate 140 is formed into a plate shape and joined to the casing 130. The core part 140 is connected with an outflow side tank part 160 communicating with the tube 110. The outflow side tank part 160 has: a body part 162 in which exhaust air circulates; and a planar plate joint part 163 which is connected with a core part 115 side end part of the body part 162 and joined to the core plate 140. An inner wall surface of the tube 110 is smoothly connected to an inner wall surface of a connection part 165 between the body part 162 and the plate joint part 163 in the outflow side tank part 160.SELECTED DRAWING: Figure 5 |
