ENERGY CONVERSION ELEMENT

To provide an energy conversion element for converting temperature difference energy into kinetic energy with a simple structure that does not generate noise or vibration.SOLUTION: A magnetic fluid 2 is used to conduct heat between a temperature-sensitive magnetic body 1 which is a rotatable disk-shaped permanent magnet, and a portion 5 where a magnetic field is applied to this, and heat from the outside is conducted to the temperature-sensitive magnetic body through a permanent magnet portion. Rotational torque is generated by reducing the magnetization of the heated portion of the temperature-sensitive magnetic body and attracting the temperature-sensitive magnetic body before being heated closer to the magnetic field. By using a permanent magnet for the temperature-sensitive magnetic body 1, a reaction force can also be used. The temperature-sensitive magnetic body 1 is cooled through a low-temperature input terminal 8. Rotational torque in the same direction as that on the high-temperature input side 7 is generated due to the temperature dependence of the reaction force with the temperature-sensitive magnetic body 1 on the low-temperature input side. With a simple structure, an energy conversion element with low vibration, low noise, and high reliability can be obtained.SELECTED DRAWING: Figure 1 【課題】騒音、振動が発生しない単純な構造を有する、温度差エネルギーから運動エネルギーへのエネルギー変換素子を提供する。【解決手段】回転可能な円盤状の永久磁石である感温磁性体1と、これに磁場印加する部分5とを磁性流体2を用いて熱伝導し、永久磁石部分を通して外部からの熱を感温磁性体に誘導する。加熱された感温磁性体部分は磁化が小さくなり、加熱される前の感温磁性体がより磁場に引き付けられることにより回転トルクが生じる。感温磁性体1に永久磁石を用いることにより、反力も利用できる。低温入力端子8を通して感温磁性体1を冷却する。低温入力側では感温磁性体1との反力の温度依存から高温入力側7と同方向の回転トルクが生じる。簡単な構造により、低振動、低騒音、高信頼性のエネルギー変換素子を得られる。【選択図】図１