Polycrystal ingot furnace and thermal field heat preservation device thereof

The utility model discloses a thermal field heat preservation device of polycrystal ingot furnace, including end heated board (3), top heated board (1) and thermal -insulated cage side heated board (2), the marginal default distance of end heated board (3). Use the utility model provides a thermal field heat preservation device sets up carbon soft felt (4) at the upper surface of end heated board(3), and carbon soft felt (4) stretch out end heated board (3) default distance all around, therefore when thermal -insulated cage during in the zero -bit, thermal -insulated cage side heated board (2) with this layer of carbon soft felt (4) nose press incline the gap of heated board (2) to end heated board (3) and thermal -insulated cage in for the gap is filled by carbon soft felt (4), reduces the heat dissipation, improves the thermal field heat insulating ability. And then the reduction energy consumption, the quality and the stability of assurance polycrystal ingot casting. The utility model also discloses a poly