| 摘要 |
PURPOSE:To make temperature fixed all over an infrared-rays radiating surface and thereby to radiate infrared rays of the same wavelength, by sending hot air directly into a heating chamber. CONSTITUTION:A combustion gas generated from a combustion chamber 16 by a liquid-fuel or gaseous-fuel device 13 is sent into a heating chamber 11 through a bored diffusion plate 18 to heat a concentric-circle-shaped wave-form bored plate 12, and thereby long-wave infrared waves are emitted from the surface of this plate coated with ceramic by flame spray. The gas having finished heating is let out from the holes of the plate and heats a substance to be heated by its residual calories, while removing the partial saturation of the heated substance and thus improving a heating efficiency. The holes 26 of the metal plate 12 are made in the bottom parts of wave forms at intervals and diameters determined by calculations. A gap (e) between the hole 26 and a baffle plate 14 is set to be fixed, together with four corners by adjusting (f) beforehand by means of an adjusting rod 23, and thus the surface temperature- the wavelength of infrared rays- of an infrared ray radiating plate can be selected to be in the most preferable conditions for the purpose of heating. |
