| 摘要 |
PURPOSE: An agricultural hot water boiler is provided to enhance the thermal efficiency by supplying external air to a combustion chamber again after heating because the external air is supplied to a space secluded by vertical barriers in both sides of the combustion chamber. CONSTITUTION: An agricultural hot water boiler comprises vertical barriers, first and second filtering devices(40,44), and a blower(48). The vertical barrier divides a space in both sides of a combustion chamber. A plurality of holes is bored in a front side of the vertical barrier. Heated air circulated through a heat exchange pipe(30) is supplied to the first filtering device through a discharging pipe(38). The first filtering device removes dust of the heated air. The second filtering device connected to the first filtering device through a connecting pipe removes the dust of the heated air have passed through the first filtering device. The blower forcibly blows the heated air filtered by the second filtering device. |
