| 摘要 |
PURPOSE:To control the cooling of primary air of a carburetor chamber by a method in which a carubretor chamber to vaporize a liquid fuel and a mixing chamber to mix vaporized gas and primary air are provided with respective primary air ports, and whole amount of necessary primary air is dividedly supplied to both of the chambers. CONSTITUTION:At the upper part of a carburetor chamber 4 to mix a liquid fuel vaporized with part of primary air, a mixing chamber 12 to mix the mixed gas from the carburetor chamber 4 with the primary air from an air supply port 14 is provided through a mixing plate 3. In this case, plural air supply ports are provided on the side wall 17 of the mixing chamber 12, and an air supply passage 15 of a ring form is provided on the outside of the air supply ports and then connected to a fan 6 through air supply pipes 16 and 5. By this, liquid fuel supplied into the carburetor chamber 4 by a pump 8 comes into contact with a vaporizing wall 2 heated by a heater 1, is vaporized, premixed with primary air supplied from the air port 7 by the fan 6, enters from an opening 13 into the mixing chamber 12, mixed with primary air from the air supply port 14, and then burned in a burner head 10. |
