Abstract: An improved evaporator is provided for an ice making apparatus of the auger-type. The evaporator employs an evaporator body having spiral grooves cut or milled into its outer cylindrical surface and a cylindrical jacket disposed over the spiral groove formed on the outer cylindrical surface of the evaporator body, with the jacket being in interference-fit engagement against the groove of the evaporator body. The interference fit is formed by thermal expansion of the jacket prior to it being telescopically slid over the body, followed by a cooling-down of the jacket, by which it shrinks or compresses radially inwardly, to tightly seal against the outer periphery of the grooves, creating a sealed path for refrigerant flow, from inlet to outlet of the evaporator.

Abstract: An auger-type ice maker comprises a generally cylindrical-walled freezing chamber, a rotatable ice auger within the chamber, and a compacting head whereby ice formed in the freezing chamber is transferred by rotation of the auger into the compacting head and discharged therefrom via a nozzle. The nozzle is provided with an annular water-receiving canal for receiving water squeezed from ice as it compressed while passing through a converging nozzle. The configuration of the converging nozzle is arcuate, and is defined by a surface of revolution that is a frustum of a radius-defined convex conical passageway.