| 摘要 |
PURPOSE:To provide an air heater device that is efficient and consumes less electricity by an arrangement in which the hot air is made through a series of chambers with the capacity of rotating bodies sequentially becoming smaller from the air intake side. CONSTITUTION:The area of gas inlets 3, 4 of an air heater is formed in such a manner than the rate of the gas induction and delivery may be limited to be less than the capacity of the gas induction and delivery of a rotating body 7. Because of this, a desirably balanced decompression state is formed in a gas induction section 12, and so, the stagnation effect of gas develops in the rotational range R of the rotating body 7 to enhance the friction action by a rotary vane 11. As the air is gradually heated, it is delivered from outlets 5, 6. Among electric motors 7a, 7b, 7c, the motor 7a closest to the air induction side has the largest capacity and the motors 7b, 7c have the increasingly smaller capacity, while the gas induction capacity of the rotating body 7 becomes sequentially smaller. By this constitution, the hot air producing capacity of the overall device is not different from that which employs rotating bodies of the same capacity. |
