| 摘要 |
<p>In an ice-cream machine of the kind, in which the convolutions in a rotating mixing auger (17) cooperate with the inside of a mixing cone (21), and in which a comminuting knife (18) rotates together with the auger (17) and cooperates with a bottom plate having an aperture (21b), the new feature is that the aperture (21b) is star-shaped and extends all the way out to the inside of the mixing bowl (21), and that the blades of the knife (18) extend substantially all the way out to said inside. This arrangement prevents the formation of 'dead annular zones', in which hard particles may be moved around and around without being comminuted immediately, and the ensuing faster throughput of material reduces the production of heat, so that the ice mass may be served with the desired low temperature.</p> |
