| 摘要 |
PURPOSE:To improve a heat generating effect by a method wherein friction heat, generated by the rotating operation of a rotary body, is concentrated to a heat exchanging part through a heat accumulating space provided at the side of discharging of a hollow chamber while the heat exchanging part is made by a choked structure to compress effectively heated air introduced into the heat accumulating space. CONSTITUTION:A reduced pressure friction heat generating mechanism 4 is operated and air in the closed hollow chamber 1 is evacuated at first gradually through an evacuating path 9 by the suction and evacuating effect of a fan 6, then, the pressure in the hollow chamber 1 is reduced and a pressure difference between the inside and the outside of the hollow chamber 1 becomes large gradually. Thereafter, a substantially constant equiliblium condition is maintained when the pressure difference has arrived at a given value. Under this equiliblium condition, air stays in a friction heat generating part 8 in the rotating zone of the fan 6 and a frictional effect between the fan 6 is repeated continuously, therefore, the friction heat is generatd and the temperature of the air is increased gradually, while the rotating and evacuating effect of the fan 6 tries to send forcibly the heated air into the heat accumulating space 10, therefore, compressing operation is effected, while compression heat is also generated and the temperature of the air in the heat accumulating space 10 is increased suddenly by the compression heat as well as the friction heat. |
