| 摘要 |
PROBLEM TO BE SOLVED: To provide a heating system having the safety to abnormal overheating of an apparatus caused by the failure of an air blasting fan. SOLUTION: A communication port 20 is formed on a proper part at a main body cooling air trunk 17 side, of a combustion cylinder 14, and a temperature detecting means 21 is mounted on a proper part of an outer hull of the main body cooling air trunk 17. When the air blasting fan 16 is stopped, the air by the air blasting fan 16 does not flow to the main body cooling air trunk 17, and a combustion gas generated in a combustion part 11 flows out from the communication port 20 of the combustion cylinder 14 into the main body cooling air trunk 17, whereby the temperature detecting means 21 mounted on the outer hull of the main body cooling air trunk 17 is heated at high rate detects the abnormal overheating of the apparatus, and stops the combustion in the combustion part 11 to prevent a non-safety state of the apparatus. COPYRIGHT: (C)2004,JPO
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