| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping structure of a combustion-type heater capable of being further miniaturized and simplified in its constitution. SOLUTION: This piping structure of the combustion-type heater 1 for increasing a temperature of associated elements of an internal combustion engine, is provided with a combustion gas discharging passage 3 connected to an exhaust passage 13 of the internal combustion engine for introducing the combustion gas discharged from the combustion-type heater 1 to the exhaust passage 13, and a first straightening vane 4a and a second straightening vane 4b as a flow control means mounted on a connecting part of the combustion gas discharging passage 3 and the exhaust passage 13 for controlling the flow of the exhaust flowing in the exhaust passage 13, from an exhaust upstream side of an outlet of the combustion gas discharging passage 3 to the combustion gas discharging passage 3.
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