| 主权项 |
1. An exhaust gas heat recovery device that recovers heat of an exhaust gas from an internal combustion engine, the device comprising:
an exhaust pipe that leads the exhaust gas from an upstream side to a downstream side; a cylindrical shell that covers an outside of the exhaust pipe; and an exhaust gas heat recovery section that is interposed between the exhaust pipe and the cylindrical shell and that performs heat exchange between the exhaust gas and a heat exchange medium, wherein the exhaust gas heat recovery section includes a stacked body that is composed by stacking a plurality of jacket parts each having a heat exchange medium conduit provided thereinside, and, in the stacked body, the respective heat exchange medium conduits in the plurality of jacket parts are serially connected to each other, wherein a first clearance, through which the exhaust gas from the exhaust pipe passes, is provided between an outer circumference of the exhaust pipe and the stacked body, wherein a second clearance, through which the exhaust gas having passed through the first clearance passes, is provided between the plurality of jacket parts constituting the stacked body, and wherein a third clearance, through which the exhaust gas having passed through the second clearance passes, is provided between an inner circumference of the cylindrical shell and the stacked body. |
