| 摘要 |
<p>In the present invention, heat is continuously supplied and rising air is formed by hot air which is occurred by a flame source through a transparent tube. And in the space of where the rising air generates the heat in a lower layer, if the hot air is risen by a hole of a diaphragm formed with the hole in the middle or from the middle to the outside and passed through cold air of the surroundings, a whirlpool is aroused by an interaction of centrifugal force and gravity and tornadoes are formed. A fan for rotating the hot air is formed in a upper layer or the lower layer in order to reinforce the rotation of the hot air which is formed in the upper layer.</p> |
