| 摘要 |
PURPOSE:To eliminate the need for exclusive heat source for drying by a method wherein the heat generated by a blower device, which reduces the pressure in a drying chamber by sucking the air in the drying chamber, is utilized as a heat source for drying. CONSTITUTION:When the blower 3 is put into operation, the air in a hollow chamber 1 and a granular substance receiving chamber 8 is discharged in order to reduce its pressure until the state of pressure equilibrium is reached. The frictional heat generated at the frictional heat generating part of the blower 3 rotating under said state of equilibrium gradually raises the temperature within the system. When outside air is introduced through an outside air lead-in pipe 10, the air containing the water content generated by drying is pressed in a cavity chamber 6. The air in the cavity chamber 6, the temperature of which is raised by said pressing-in, further heats and dries granules 13 through heating plates 7. |
