Fecha de publicación: 06/09/2019 Fuente: WIPO "abeja" The invention relates to a tunnel dehydrator having a compact and efficient design, for dehydrating all types of products, such as fruits, vegetables or meats, by means of the circulation of heated air. The dehydrator is formed from the usual parts of a tunnel dehydrator: a dehydration chamber (3) and a heating chamber (4); a separation (5) between chambers; a fan (13); a heat source (14); an air inlet (8) and an air outlet (9); trolleys with trays; and openings for the entry and exit of the trolleys. The designs of other dehydrators are improved by introducing: weighing scales (25, 26) to determine the product weight in real time; flow redirectors (31, 33) and a honeycomb panel (35) for achieving a uniform speed-profile distribution in the dehydration chamber, and therefore homogeneity in drying; an air-to-air heat exchanger (39) for using the energy of the air released into the atmosphere; and adjustable motorised air recirculation louvres (46), adjustable motorised air outlet louvres (47) and adjustable motorised air inlet louvres (48) for controlling the amount of recirculated and inlet/outlet air.