IMPELLER FOR DIAGONAL OR RADIAL FANS (EMBODIMENTS THEREOF), DIE CASTING MOLD FOR MAKING SUCH IMPELLER, AS WELL AS DEVICE WITH AT LEAST ONE SUCH IMPELLER Russian patent published in 2019 - IPC F04D29/28 

FIELD: machine building.

SUBSTANCE: impeller with lower disc and upper disc, which are connected to each other through blades. Top disc, bottom disc and blades are made in three dimensions so that they can be made by injection molding in the form of one part. In the projection on the cylinder with the average diameter of the rear or the front edge of continuation of the rear and/or front edges of the blades with the axis of rotation, with the lines parallel to the axis of rotation, form a certain angle, at least one angle of which is not equal to 0°. To make lower disc with jointing point, injection molding tool has at least one mold insert arranged between two pushers.

EFFECT: object of the invention to design the generic impeller wheel, the generic injection molding tool and the device in such a manner that simple manufacture of impeller wheels with a three-dimensional geometry and thus particularly high efficiency factors.

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