The invention provides a high-temperature pure
air heater. The high-temperature pure
air heater comprises a pressure-resistant shell (1), a grate (2), an air inflow
pipe (3), a heat insulating layer (4), a lining
barrel (5), an air outflow
pipe (6), an upper cover plate (7), a fastening bolt (8),
corundum parts (9-1, 9-2 and 9-3),
electric heating assemblies (10), heat exchange assemblies (11), apower connector (12) and a support (13). The heat insulating layer (4) is mounted in the pressure-resistant shell (1), the
electric heating assemblies (10) and the heat exchange assemblies (11) are combined up and down, and each
electric heating assembly (11) is located on the lower portion of the corresponding heat exchange
assembly (10). Heat exchange pipes of the heat exchange assemblies (11) are spirally arranged according to an
involute and connected in series up and down, and connectors are inserted in a conical disc shape. The air inflow
pipe (3) is arranged on the lower portion of thedevice, and the air outflow pipe (6) is arranged on the upper portion of the device. According to the
air heater, the flow path of
airflow is long, the heat exchange area is large, and the temperatureof the outlet
airflow is stable. The heat exchange assemblies are vertically arranged, the internal heat insulating layer bears force uniformly, and the air heater is convenient to manufacture and
machine and convenient to
mount.