Patent ID: 8297049

Claim:
An exhaust heat recovery device comprising: a heat exchanger comprising: a shell having an exhaust channel through which the exhaust gas flows and a coolant medium channel provided adjacent to the exhaust channel through which the coolant medium flows; a first linking channel that communicates an outside of the shell and an upper portion of the coolant medium channel in the direction of gravity at one end of the coolant medium channel in the coolant medium flow direction; a second linking channel that communicates the outside of the shell and a lower portion of the coolant medium channel in the direction of gravity at the other end of the coolant medium channel in the coolant medium flow direction, the second linking channel including a ring pipe that is arranged coaxially with the coolant medium channel at a downstream side of the exhaust gas flow direction; and a heat insulating unit that insulates a portion of the second linking channel positioned inside the shell from the exhaust gas.