| 摘要 |
PURPOSE:To provide a simple hot-air heater with high heatefficiency and work efficiency, and without hazard. CONSTITUTION:A slit-shaped hot-air jet 2 is provided for the end of a hot-air nozzle 1 to heat, the inside of the end of a flexible cylindrical tube (a). An opening is provided for the lower end to divert hot air flow from the inside of the lower end of the tube (a) to the outside in order to heat the outside of the end of the tube (a). Guide cylinders 3 provided with small holes around their periphery enough to exhaust part of the hot air are installed at required spaces. The upper end of the guide cylinders 3 is integral with the hot-air nozzle 1. Also provided integrally with the hot air nozzle 1 are a ring-shaped cooler 8 to cool the opening at the lower end of the guide cylinder 3 and hot air exhausted through small holes 5 for exhaust, and an external cylinder 6 with a required number of exhaust holes 9 around the periphery. A flexible cylinder tube holder 23 is provided under the external cylinder. |
