Drying apparatus

摘要

A former unit (20) as a drying apparatus includes a horizontally oriented main casing (21). Space inside the main casing (21) is divided into four irradiation zones (31-34). Each of the irradiation zones (31-34) contains one tray unit (10). Each of the tray units (10) contains four metallic transfer trays (14) aligned in the vertical direction, with a distance between the transfer trays (14) set to half a wavelength of a microwave (λ/2) or larger. Each of the transfer trays (14) carries wet PTFE powder. In the irradiation zones (31-34), the tray units (10) sequentially move from the first irradiation zone (31) to the fourth irradiation zone (34), and the microwave is laterally applied to the transfer trays (14).

主权项

1. A drying apparatus for drying a moisture-containing object by applying a microwave to the object, the drying apparatus comprising:
a metallic transfer tray for carrying the moisture-containing object; and a main body for containing multiple ones of the transfer tray vertically aligned at predetermined intervals, and laterally applying the microwave to the contained transfer trays, wherein a distance between the vertically adjacent transfer trays in the main body is set to λ/2 or larger, where λ is a wavelength of the microwave applied to the transfer trays; the main body includes a plurality of microwave irradiators which apply the microwave to the transfer trays in different directions, each of the microwave irradiators includes
a microwave oscillator, anda plurality of waveguides connected to the microwave oscillator and the main body and guiding the microwave generated by the microwave oscillator, terminal ends of the waveguides are irradiation ports, each of which is opened on a side surface of the main body and positioned between the transfer trays adjacent to each other in the vertical direction, and the microwave irradiators irradiate the microwave from the irradiation ports which are the terminal ends of the waveguides.