FIELD: fan engineering. SUBSTANCE: working wheel for a hydraulic fan has hollow blades 2 provided with jet nozzles 3. The blades are set on hub 1. The nozzles are in communication with a high pressure source through spaces of blades 2. The wheel is additionally provided with short blades 6 and two rings 7,8 of rigidity having different diameters. Short blades 6 are interposed between hollow blades 2. Ring 7 having lesser diameter is secured to bases of blades 6. EFFECT: improved design. 3 cl, 3 dwg
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