PURPOSE: To make it possible to reduce a dynamic pressure component of a mixture gas and to make the pressure thereof uniform by a construction wherein a drooping part is formed in the periphery of a rectangular ceiling part disposed along the longitudinal direction of the internal space of a combustion tube and thereby the gas rising through a partition plate is received in an inside space of the drooping part.
CONSTITUTION: Most of a vaporized liquid mixture gas coming into a combustion tube top 10 from a combustion tube bottom 20 through an opening 31 is once held in an inside space of a drooping part 62 of a straightening plate 60, a dynamic pressure component thereof is weakened therein and the pressure thereof is made uniform. With its stream directed outward from a roundabout space S, the mixture gas flows upward while colliding with the inside wall of a ceiling part of the combustion tube top 10. Streams from the right and the left collide with each other in the central part in the upper part of the ceiling part and are led to a mesh-shaped flame hole body 40 through a straightening mesh body 50. After the liquid combustion mixture gas goes through a partition plate 30, accordingly, it is led to the flame hole body 40 with its pressure made sufficiently uniform, and combustion with a uniform flame is brought forth in the central part and the lateral part of the flame hole body 40.
TAKATANI MASAHIRO
INOUE HARUO
MIZUTA TSUGUHISA
