Exhaust heat recovery device

An exhaust heat recovery device, comprising:

• a first exhaust pipe;
• a second exhaust pipe into which a downstream end part of the first exhaust pipe is inserted, forming a gap between the second exhaust pipe and an outer periphery of the first exhaust pipe, through which exhaust gas can flow;
• a third exhaust pipe provided so as to surround the downstream end part of the first exhaust pipe and the second exhaust pipe;
• an annular heat recovery material that is provided between the second exhaust pipe and the third exhaust pipe, through which the exhaust gas passes inside, and that performs heat exchange with a medium flow path provided on an outer periphery of the third exhaust pipe;
• a valve that opens and closes the second exhaust pipe, located downstream of the portion of the second exhaust pipe into which the first exhaust pipe is inserted;
• and
• a bearing member for the valve provided between the second exhaust pipe and the third exhaust pipe;
• wherein
• when the valve is closed, the exhaust gas passes through the gap and is guided to the heat recovery material, and when the valve is open, the exhaust gas bypasses the heat recovery material and is guided to the third exhaust pipe;
• and
• the bearing member connects to and retains the second exhaust pipe and the third exhaust pipe, and seals between the rotary shaft of the valve and the second exhaust pipe.