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    • 5. 发明授权
    • Thermo-magnetically operated switches having two different operating
temperatures
    • 具有两个不同工作温度的热电操作开关
    • US4325042A
    • 1982-04-13
    • US149321
    • 1980-05-13
    • Masanori EndoKentaro Horiuchi
    • Masanori EndoKentaro Horiuchi
    • H01H37/58H01H36/00
    • H01H37/585
    • A thermo-magnetically operated switch having two different and predetermined lower and higher operating points on a temperature scale so that it may be maintained open below the lower operating point and above the higher operating point and be maintained closed between the two different operating points comprises two permanent magnets, and two kinds of temperature sensitive ferromagnetic members in proximity to a reed switch. The two permanent magnets are disposed over respective reeds of the reed switch in a similar polar direction and with an axial space therebetween. Two temperature sensitive ferromagnetic members having a higher Curie point are disposed at opposite outer sides of both permanent magnets or at opposite ends of the reed switch, and are in contact with respective permanent magnets. While one or more temperature sensitive ferromagnetic members having a lower Curie point are disposed within the axial space between the permanent magnets to magnetically connect the permanent magnets form at least one axial magnetic gap so that, even if the temperature is lower than the lower Curie point, leakage flux flows through the reeds of the reed switch. Thus, the switch is open below the lower Curie point and above the higher Curie point and is closed between the lower and higher Curie points.
    • 一种热电操作开关,具有温度范围上具有两个不同的和预定的较低和较高的工作点,使得它可以在较低的工作点以下高于较高的工作点并保持在两个不同的工作点之间保持关闭,包括两个 永磁体和两个温度敏感的铁磁部件在簧片开关附近。 两个永磁体以类似的极性方向设置在舌簧开关的相应的簧片上并且在它们之间具有轴向空间。 具有较高居里点的两个温度敏感铁磁构件设置在两个永久磁铁的相对的外侧或簧片开关的相对端,并与相应的永磁体接触。 虽然具有较低居里点的一个或多个温度敏感铁磁构件设置在永磁体之间的轴向空间内,以使永磁体磁连接形成至少一个轴向磁隙,使得即使温度低于下居里点 ,漏磁通流过簧片开关的簧片。 因此,开关在较低的居里点下方和较高的居里点之上开口,并在较低居里点和较高居里点之间关闭。