Patent FR-2931036-A1 (FR)
Title: Machine for production of ice, comprises cylindrical working tub, a mixer body mounted to rotate inside the working tub around an axis of rotation, and a motor unit mechanically joined to mixer body for rotating around rotational axis
Inventor: JEJCIC VALTER
IPC: A23G9/04
Filed: 2009-04-23
Abstract: The machine comprises a cylindrical working tub, a mixer body (5) mounted to rotate inside the working tub around an axis of rotation, and a motor unit (6) mechanically joined to the mixer body for rotating around the rotational axis. The motor unit is provided with a motor shaft, which is protruding from the bottom of the working tub by maintaining coaxial to the axis of rotation. The mixer body is movable and structured to fit on the free end of the shaft, and comprises a first hub (7) and a second hub (8) aligned on the motor shaft one above the other. The machine comprises a cylindrical working tub, a mixer body (5) mounted to rotate inside the working tub around an axis of rotation, and a motor unit (6) mechanically joined to the mixer body for rotating around the rotational axis. The motor unit is provided with a motor shaft, which is protruding from the bottom of the working tub by maintaining coaxial to the axis of rotation. The mixer body is movable and structured to fit on the free end of the shaft, and comprises a first hub (7) and a second hub (8) aligned on the motor shaft one above the other. The first hub is aligned to rotate freely on the shaft resting on the bottom of the working tub, and mechanically joined to the working tub to remain immovable during the rotation of motor shaft. The second hub rotates along with the motor shaft in angular plane so as to rotate inside the working tub around the axis of rotation. The mixer body is further provided with many blades, which protrude from the first hub, many radial support arms, which protrude in the radial direction of the second hub surrounding the blades, and a series of scraper spatulas that are conveniently distributed on the radial arms to rub according to the position on the bottom or on the cylindrical side wall of the working tub. The blades are two flat protruding appendices, which protrude in the radial direction of opposite sides of the first hub, and the remaining are coplanar with the positioning plane of the axis of rotation. Each radial support arm comprises a rod substantially bent into L, which is laid as support on the cylindrical side wall and on the bottom of the working tub so as to be locally tangent to the inner surface of the working tub, and a connecting bar, which protrudes from the second hub until the straight rod, on top of a corresponding blade, forms with the rod a rigid structure to form F in the reverse side, which is rotating inside the working tub around the axis of rotation joining with the second hub. The rod is positioned to support on the cylindrical sidewall and on the bottom of the working tray to have a first straight part, which extends parallel to the axis of rotation between the blade and the cylindrical sidewall of the working tub. A second straight branch extending into the central hub is present below the immediate adjacent blade, and maintains coplanar with the first branch and locally parallel to the bottom of the working tub. Each scraping spatula consists of a rectangular flat plate having a first lateral side profiled in order to be articulated as flag on the first part or the second part of the rod and a second lateral major side, which has a profile as blade or chisel for rotating, according to the position, on the bottom or on the cylindrical side wall of the working tub. The first part and the second part of the rod have a circular section. Each of flat plates contacts with the first side, has a longitudinal hole that extends to inside of the body of the parallel plate to the first lateral side and is able to be engaged in free rotation by a part of the branch or the second part of the rod, on which the flat plate is intended to be articulated as flag. The mixer body is provided of two scraping spatula for each radial arm fixed on the first part and the other on the second part of the rod. A scraping spatula is fixed on the first part of the rod, consists of a flat plate of rectangular form which contacts with the first major lateral side. A longitudinal carving extends parallel to the longitudinal hole. An intermediate point of the first lateral side to the edge of the plate is located next to the bottom of the working tub. The longitudinal carving is sized to contact directly with the longitudinal hole, and profiled so as to be engaged by sliding the distal end of the connecting bar of the radial arm. The radial support arms are two in number and protrude from opposite sides of the second hub. The axis of rotation of mixer body coincides significantly with axis of symmetry of the working tub. A heating device (4) is for arranged for carrying and maintaining the working tub, and remains at a temperature of 50-100[deg] C. A circuit is arranged for cooling and maintaining the working tub and remains at a temperature of 0-5[deg] C.