Temperature controller for multi-temperature-zone control

The temperature controller comprises a heat conduction pipe and a hollow tubular structure, a plurality of sections of induction rods are arranged in the heat conduction pipe, the induction rods are sequentially connected end to end, and every two induction rods are made of materials with different thermal expansion coefficients; the mounting seat is provided with a through hole for mounting the heat conduction pipe; the first contact is mounted in the mounting seat; the second contact is installed in the installation base, and the first contact and the second contact are arranged in a layered mode in the axial direction of the heat conduction pipe; one end of the first elastic sheet is matched with the first contact; one end of the second elastic sheet is matched with the second contact; wherein the induction rod is heated to expand and deform to drive the first elastic piece and the second elastic piece to be in contact with or disconnected from the first contact and the second contact respectively, so that