| 摘要 |
A heat exchanger, particularly an exhaust gas heat exchanger, for transferring heat in two stages between a first fluid and a second and third fluid that have different temperatures is provided. The heat exchanger comprises a block for separately conducting the first as well as the second and third fluid in a heat transferring manner. The block encompasses a number of ducts through which the first fluid can flow, a first chamber of a high-temperature part, through which the second fluid can flow and which accommodates the ducts, a second chamber of a low-temperature part, through which the third fluid flows and which accommodates the ducts, and a housing in which the first and second chamber as well as the ducts are arranged. Thus, a two-stage heat exchanger is provided at a low cost and keeps leakage between the high-temperature part and the low-temperature part low. Whereby the first chamber and the second chamber are separated from one another by means of a separation area that is mounted in a groove.
|
