To accurately control temperature in a vessel used for a drier, culture device, incubator, dry heat sterilizer or the like, by eliminating uneven temperature distribution in the vessel.

A blast temperature control vessel at least has a temperature control vessel main body 2 in which a temperature sensor 30, a heater 20 and a sirocco fan 8 are disposed in a box 4 having an opening and closing door 6, and has a controller 38 for controlling electric power supplied to the heater 20 by receiving detection signals from the sensor 30. A blast guide plate 28 having an air suction hole 26 is provided in front of the sirocco fan 8. Preferably, an outdoor air intake hole 12 should be formed in a back wall 10 of the vessel, which is located rearward of the sirocco fan 8.