| 摘要 |
In order to prevent the reflux of already prepared soft ice-cream compound or of the ice-cream mixture which is still to be frozen from a freezing chamber (1) of the soft ice-cream machine into a source (11) of compressed air and automatically to maintain a set air pressure ratio between the freezing chamber (1) and a supply container (8), the freezing chamber (1) is releasably connected to the supply container (8) by means of an ice-cream mixture pipe (13, 15), which is guided into the supply container (8) and terminates just above the floor of the latter, and to the source (11) of compressed air by means of the upper part, which does not contain liquid, of the supply container (8) via a compressed air pipe (10, 17). The compressed air pipe (10, 17) has a flow-regulating valve (18) between the freezing chamber (1) and a connection which is present on the lid (108) of the supply container (8). The connections are designed as rapid-action couplings (12, 14, 16) which each contain a non-return valve (112,212; 114,214; 116,216). The said couplings automatically close during decoupling, so that there is no loss of pressure or outflow. <IMAGE> |
