Single crystal growing furnace heating voltage signal detection alarm device

The utility model provides a single crystal growing furnace heating voltage signal detection alarm device, includes the furnace body, fixes bell and drop -bottom, the crucible of tip the furnace body about and be used for carrying the last stand that draws the silicon single crystal stick respectively, and the outer peripheral face of crucible is equipped with the heater, and the crucible is fixed in the furnace body through stand down, and the furnace body is inside to be equipped with the heat -preserving container, and the tip is equipped with down the heat preservation under the heat -preserving container, and the heat -preserving container upper end is equipped with the lid that keeps warm, and goes up to keep warm and cover the central breach that confession silicon single crystal stick passes through that is equipped with, smelter body outer wall is last to be equipped with the digital signal controller, auxiliary relay and the alarm that are used for receiving heater output heating voltage signal that constitutes an electric link circuit, when heating voltage signal is less than / is higher than the setting value of the inside normal operating of furnace body, and digital signal controller alarm output signal, alarm warning. This technical operation is implemented conveniently, and the limit of putting on airs prevents that the single crystal growing furnace from losing, reducing by a wide margin or exceed normal crystal pulling scope because of heating power, can not in time discover and the serious consequence that causes.