| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion device capable of suppressing inflow of drain in a device.SOLUTION: A combustion device includes: a device body having a combustion chamber inside and having an exhaust collection cylinder 16 for exhausting a combustion exhaust gas generated in the combustion chamber; an inner pipe 11; and an outer pipe 12 for surrounding an outer peripheral surface of the inner pipe 11. The inner pipe 11 is connected to the exhaust collection cylinder 16, and configures an exhaust passage 11a for exhausting the combustion exhaust gas from the exhaust collection cylinder 16 in an inner peripheral side region of the inner pipe 11. The outer pipe 12 is connected to a body case 17, and configures an air supply passage 12a for supplying air to the combustion chamber between the outer peripheral side region of the inner pipe 11 and the inner peripheral side region of the outer pipe 12. Between the inner pipe 11 and the exhaust collection cylinder 16, a pressure shield part 80 is provided which is separated from the exhaust passage 11a and the air supply passage 12a so as to have a pressure different from the pressure in the exhaust passage 11a and the pressure in the air supply passage 12a.SELECTED DRAWING: Figure 3 |
