| 摘要 |
PURPOSE: A hot blast heater for preventing the vortex of outside air inside a hot blast heater is provided to increase heat exchange effect by concentrating external air flow on a heating member. CONSTITUTION: A hot blast comprises a housing(100), a first exothermic member(500), a controller, first and second air current guide plates(300,400). The housing has an inlet(110), a space part, and an outlet(120). The external air is compulsorily inhaled with the drive of a ventilation fan(130) through the inlet. The air passing through the space part is exhausted to outside through the outlet. The first exothermic member is installed on the center of the space part of the housing and heat inflow air. The controller supplies or shuts off the power to a drive motor and the first exothermic member. The first air current guide plate is extended from a circumference of the inlet to slope in the space part of the housing. The second air current guide plate is located oppositely to the first air current guide plate. |
