FURNACE BODY FOR THERMAL ANALYSIS INSTRUMENT AND THERMAL ANALYSIS INSTRUMENT PROVIDED WITH SAME

摘要

Provided are a furnace body for a thermal analysis instrument, which is capable of realizing rapid temperature rise and fall, and a thermal analysis instrument provided with the same, wherein, the furnace body comprises a hollow furnace main body (100), a heating system (90) and a refrigeration system (80) located below the furnace main body (100); the cross-section of the furnace main body (100) is dumbbell-shaped, two symmetrical sample cavities are provided inside the furnace main body (100), and a hole (7) is provided at the central portion as a ventilation channel for gas circulation in the cavity; the heating system (90) comprises two or more heat-conductive posts and two or more sets of heaters wrapped around the outer surface of the heat-conductive posts; the refrigeration system (80) comprises a hollow cold-conductive member (20) with one end being closed as a cold transfer surface (11) and the other end being open, a hollow refrigerant nozzle (19) that is nested inside the cold-conductive member (20) with a gap, a refrigerant inlet pipe (17) and a refrigerant outlet pipe (18) located at an open end side of a cooling guide (20), and a transition joint (23) respectively sealedly connected to the open end of the cold-conductive member (20) and the end of the refrigerant nozzle (19) away from the cold transfer surface (11); a plurality of heat-conductive posts are arranged below the two symmetrical sample cavities of the furnace main body (100) and are distributed in an axis symmetry; the heater includes heating wires symmetrically wrapped on the heat-conductive post; the inner wall of the refrigerant nozzle (19) and the transition joint (23) form a refrigerant inner cavity (81); the outer wall of the refrigerant nozzle (19) and the inner wall of the heat-conductive member (20) form a refrigerant outer cavity (82); the refrigerant inlet pipe (17) is in communication with the refrigerant inner cavity (81), and the refrigerant outlet pipe (18) is in communication with the refrigerant outer cavity (82).