TURBOMACHINE COMPONENT OR COLLECTION OF COMPONENTS AND ASSOCIATED TURBOMACHINE Russian patent published in 2018 - IPC F01D5/14 

FIELD: non-displacement compressors and pumps.

SUBSTANCE: invention relates to a turbomachine component or collection of components, comprising blades and a platform from which the blades extend. According to the invention, platform (2), between the pressure face of the first blade and the suction face of the second blade, has non-axisymmetric surface (S) defining a plurality of fins (4) of substantially triangular section located downstream of the leading edge of each of the blades, each fin (4) being associated with a leading position and a trailing position on surface (S), between which positions fin (4) extends, such that: the leading position is situated at between 5 % and 35 % length relative to a chord of the blade extending between the leading edge and the trailing edge of the blade; the further fin (4) is from the suction face of the second blade, the further the leading position of said fin (4) is axially from the leading edge of the blades.

EFFECT: technical result: higher efficiency due to improvement of compressor stage performance.

16 cl, 7 dwg