JPS645518A - Tableware washing machine - Google Patents

Abstract

PURPOSE: To improve the drying performance and prevent the sticking of waterdrops to a cooking device on a dish washer by providing a heat exchanger between a suction passage guiding air into a washing tub from the outside and an exhaust passage guiding air to the outside from the washing tub. CONSTITUTION: A heat exchange section 23 is formed into a corrugated shape with a stainless thin sheet, and it perpendicularly penetrates a suction air duct 17. An exhaust air duct 24 contains the heat exchange section 23 and connects a washing tub 12 to the outside. The suction air duct 17 and a discharge side air duct 21 constitute a suction passage, and the heat exchange section 23 and the exhaust air duct 24 constitute an exhaust passage. The steam generated in the washing tub 12 is forcibly exhausted to the outside from the exhaust air duct 24 by a blower 19, it meanders at the heat exchange section 23, and it is deprived of heat by the air 26 flowing in from the outside via the thin sheet to be condensed. The steam flowing out from an exhaust port 27 during the drying process is very reduced. The air flowing in from a suction port 18 receives the condensation heat of the steam and flows into the washing tub 12 after its temperature rises, and it does not lower the atmospheric temperature in the washing tub 12 so much.