Vacuum drying apparatus

摘要: An object of the present invention is to effectively dry products in large quantities and continuously supplied without lowering conventional production speed, characterized that a product preheating means by use hot air provided vacuum vessel incorporating therein heater, so such as printed boards electronic parts after water-cleaned are dried. In case batch type, suction port blow-out penetratingly allowed communicate with each other through pipe outside gas flow device heating pipe. treating heater on one conveyors serially disposed, conveyor positioned upstream side vessel. A plurality vessels parallel another, and, alternately switching vessels, time required for drying can be extended regardless supplying speed product.