07-06-2018 дата публикации
Номер: US20180156240A1
Принадлежит:
The disclosure relates to a flow-conducting grille for arranging on the suction side of a fan, with a grille web structure which comprises radial webs spaced apart in the circumferential direction and coaxial circumferential webs spaced apart in the radial direction, wherein the radial webs of at least one quadrant of the flow-conducting grille are curved in each case over their radial extension, viewed in the circumferential direction, towards a predetermined radial plane extending from a central axis of the flow conducting grille. 115-. (canceled)16. A flow-conducting grille for arranging on the suction side of a fan , a grille web structure comprises:radial webs, spaced apart in the circumferential direction, and coaxial circumferential webs, spaced apart in the radial direction, the radial webs of at least one quadrant of the flow-conducting grille are curved in each case over their radial extension, viewed in the circumferential direction, towards a predetermined radial plane extending from a central axis of the flow conducting grille;the predetermined radial plane is a zero degree radial plane (NR) delimiting a first quadrant (1Q);the radial webs each have radial ends and determine an angle (α) formed by a line (G), extending in each case from a central axis of the flow-conducting grille to the respective radial end of the respective radial web and by an imaginary curvature-free prolongation (V) of the respective radial web projecting beyond the respective radial end, the angle (α) varies with different radial webs; and [{'br': None, 'i': 'r', 'α(ρ)=1*ρ for 0°≤ρ≤45°,'}, {'br': None, 'i': r', 'r, 'α(ρ)=90×1−1ρ for 45°<ρ≤90°,'}, {'br': None, 'i': r', 'r, 'α(ρ)=−90*1+1ρ for 90°<ρ≤135°,'}, {'br': None, 'i': r', 'r, 'α(ρ)=180*1−1ρ for 135°<ρ≤180°,'}], 'starting from the zero degree radial plane (NR) in the circumferential direction, an angle ρ is determined, the radial webs, in each case respective, are spaced apart in the circumferential direction by a ...
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