| 摘要 |
PROBLEM TO BE SOLVED: To suppress temperature rise in components composing a heating device, wherein warm air heating can be easily switched to radiation heating, caused by temperature rise in a radiator during radiation heating. SOLUTION: A cooling air duct 32 is provided to supply cooling airflow around the radiator 23 when high-temperature gas is switched to the radiator 23 side by a high-temperature gas switching means 29. Even the radiator 23 reaches a high temperature when the switching means 29 switches the high- temperature gas to the radiator 23 side, temperature rise inside the device can be suppressed. In addition, the radiator 23 can be set at high temperature, which can generate greater radiant heat and provide comfortable heating device. COPYRIGHT: (C)2003,JPO |
