| 摘要 |
PROBLEM TO BE SOLVED: To provide a double chimney combustion appliance capable of efficiently heating the inside of a building by allowing the exhaust energy of high temperatures to pass through an outer exhaust tube of the double chimney, to solve a problem on wasteful use of the energy which is conventionally released to the outside air as high energy of high temperatures from the double chimney. SOLUTION: This double chimney combustion appliance is a combustion appliance A having the double chimney 2 communicated with a combustion portion 1 of the combustion appliance X at its base portion, and the double chimney 2 is composed of an inner tube 2a as a first exhaust tube and the outer tube 2b as a second exhaust tube. The inner tube 2a and the outer tube 2b of the double chimney 2 are composed of one connected pipe. Further an exhaust tube 3a as an extending portion of the outer tube 2b is provided with an exhaust fan 4. By disposing the exhaust fan 4, a degree of freedom in designing the first exhaust tube and the second exhaust tube can be increased. COPYRIGHT: (C)2009,JPO&INPIT
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