| 摘要 |
PURPOSE:To provide a hot air KOTATU with uniform temperature by a structure wherein a fan is installed near the center of a case. CONSTITUTION:A main body case 2 is formed near in a square in a plane figure, at each of four peripheral surfaces of which an outlet 4 is arranged and yet at the center of the base of which a recess 5 is provided. A motor 6, to the output shaft of which a cntrifugal fan 7 is fitted, is housed in the recess 5. Four sheets of blast guide pieces 8, each of which extends from the periphery of the fan 7 nearly parallel to the tangential direction of the fan 7 to each corner of the case 2, are provided so as to form each passage 9 between blast guide pieces 8 adjacent to each other. A tongue 10 is fitted at the tip of each blast guide piece 8 by means of an adjusting screw 11 soas to make the vertical distance A from the tip of the tongue 10 to the tangent to the fan variable. Heaters 12 are arranged in the respective passages 9. Due to the outlets 4 arranged at four directions of the case 2, hot air prevails over the whole space in a frame work 1, resulting in eliminating nonuniformity of temperature therein. |
