Heat treatment device (200), in particular for sausages (S) of the co-extruded sausage type, said heat treatment device (200) comprising the following elements: - a pipe (102) extending between an introduction hole ( 104) and an evacuation hole (106) through which the sausages (S) leave the pipe (102), - a collecting device (108) that is placed above the introduction hole (104) that flows into the pipe (102) at the level of the introduction hole (104) and which is intended to allow the introduction of sausages (S) into the pipe (102), - a pump (112) intended to propel hot water into the pipe (102) above the introduction hole (104) or in the collecting device (108), the water level (116) in the collecting device (108) being higher than the level of the evacuation hole (106) and that the level of the introduction hole (104) and the device being t heat treatment (200) characterized in that the pipe (102) comprises, between the insertion hole (104) and the evacuation hole (106), a part that takes the form of a downward spiral winding (110), and between the insertion hole (104) and the winding (110), an ascending section (202), and because the level of the introduction hole (104) is lower than the level of the upper part of the winding (110).Dispositivo de tratamiento térmico (200), en particular para salchichas (S) del tipo salchichas co-extruidas, comprendiendo dicho dispositivo de tratamiento térmico (200) los siguientes elementos: - una tubería (102) que se extiende entre un orificio de introducción (104) y un orificio de evacuación (106) por el cual las salchichas (S) salen de la tubería (102), - un dispositivo colector (108) que está colocado por encima del orificio de introducción (104) que desemboca en la tubería (102) a nivel del orificio de introducción (104) y que está destinado a permitir la introducción de las salchichas (S) en la tubería (102), - una bomba (112) destinada a propulsar agua caliente en la tubería (102) por encima del orificio de introducción
