EXHAUST GAS HEAT TRANSFER DEVICE

摘要

The invention relates to an exhaust gas heat exchanger (1) with a housing (2), in which a tube bundle (3) with multiple tubes (4) is held via headers (5, 6), wherein in the tubes (4) a first flow path for exhaust gas (7) and between the tubes (4) and the housing (2) a second flow path for coolant (8) runs, wherein the first longitudinal ends of the individual tubes (4) of the tube bundle (3) are incorporated in a first header (5) in a fixed manner, in particular welded or brazed. It is substantial to the invention that at least one of the tubes (4) is axially moveable in the region of a second longitudinal end relative to the second header (6) and captive therein.

主权项

1. An exhaust gas heat exchanger with a housing, in which a tube bundle with at least two tubes is held via headers, wherein a first flow path for exhaust gas runs in the tubes and a second flow path for coolant runs between the tubes and the housing and wherein the first longitudinal ends of the individual tubes of the tube bundle are incorporated in the first header in a fixed manner, in particular welded or brazed, characterized in that
the region of a second longitudinal end of at least one of the tubes is axially moveable relative to the second header and captive therein.