| 摘要 |
PURPOSE:To protect an air duct which guides hot air from corrosion caused by deposit produced on an evaporation pan. CONSTITUTION:A part of hot air is introduced into an evaporation pan 8 which is installed to the bottom of a main body 1 of a hot air heater by means of a cylinder-shaped air duct 7 with a clearance set between the air duct and the evaporation pan 8 in such a fashion that it may be mounted and removed freely and water, which is supplied to the evaporation pan 8, is vaporized, thereby forming humidification hot air. This construction is effective to reduce the cleaning frequency of the evaporation pan. Even when deposit is generated in the water which remains on the evaporation pan 8 and the deposit grows, the above clearance prevents the reaching of the water deposit to the air duct 7 which introduces the hot air so that the corrosion may be avoided. |
