FIELD: engines.
SUBSTANCE: invention relates to turbine machines and can be applied in working wheels, blade diffusers, and back guide apparatus of centrifugal compressors, blowers, fans, and pumps. Recommended optimum inclination angle of inclined edges is determined by numerical solution of transcendental equation, in which, in addition to sought inclination angle of inclined edges, there are six known main geometrical parameters of blade array. Reducing gradient of working medium parameters across width of grid at outlet from it is achieved due to equality of blade array thickness on both limiting surfaces and in all currents of working medium flow.
EFFECT: invention allows reducing gradient of working medium parameters across width of array at outlet from it due to optimisation of edges inclination angles, not parallel to array axis.
1 cl, 9 dwg
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