Complete gas-tight and a sealing mechanism and a cooling mechanism, and to provide a suitable high-temperature gas blowing fan as fuel recirculation of the solid oxide fuel cells and the like.
An impeller (3) having a having a rotary shaft pieces supported heat resistance, a bearing (7) mounted on the rotary shaft, arranged heat insulating layer between the impeller and the bearing (16), constituting disposed cooling section hot gas blowing fan out with (5) between the bearing and the heat insulating layer.
Further, a fan shaft side magnetic coupling (9) is arranged a non-magnetic partition wall (11) in the gap between the motor side magnetic coupling (10), a complete gas-tight sealing mechanism to seal the space surrounding the rotary shaft (6) Configure.
Further, the cooling section (5) and the heat receiving portion (28), constitute a cooling mechanism further consisting heat transporting portion (29) air-cooled heat dissipation unit (30).