| 摘要 |
PROBLEM TO BE SOLVED: To arrange a magnetic pole so that a line of magnetic force does not leak and distribution in the line of magnetic force becomes uniform as much as possible, and to increase the output of a thermomagnetic engine. SOLUTION: The opposing magnet type thermomagnetic engine comprises a freely rotatable rotational drum 1 that is made of a thermally sensitive material and is formed in a cylindrical shape, an opposing magnet 2 that is arranged inside and outside the rotational drum 1 while the magnetic poles 2a and 2b are opposite each other on the inner- and outer-periphery surfaces of the rotational drum 1, a heating region 5 that is formed by heating one portion of the rotational drum 1, and a cooling region 6 that is formed by cooling the other of the rotation drum 1. In this case, the rotational drum 1 should be rotated by Maxwell stress F generated by difference in the temperature between the heating and cooling regions 5 and 6. The magnetic poles 2a and 2b are oppositely arranged while the wall body of the rotational drum 1 is pinched, thus allowing the line 3 of magnetic force to pass orthogonally to the rotation drum 1. In addition, density in the line 3 of magnetic force is uniform, thus causing the Maxwell stress to be generated by utilizing the entire line of magnetic force, and hence increasing the output of the thermomagnetic engine.
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