Flow deflector having channels with double ejection angles

A flow deflector for a discharge system of a compressor of a dual-flow turbine engine having a longitudinal axis (X), the flow deflector comprising a wall provided with a plurality of ejection channels configured to discharge a discharge air flow from the compressor into a flow path of the turbine engine, wherein an air flow circulates in a flow direction, ejection channels of axes (C) being arranged in several rows (R1, R20) in alignment directions (B) substantially parallel to a median plane (PM) of the flow deflector which is parallel to the flow direction and is configured to eject the discharge air flow in the flow direction, the axes (C) each being oriented in a first direction forming a first angle (α) with respect to an axis (B) parallel to an axis of revolution of the flow deflector, wherein a projection of the axes of the ejection channels of each row in a projection plane (PP) perpendicular to the median plane (PM) forms a second angle (β) with a straight line parallel to the median plane (PM), and the second angle (β) increases from the median plane (PM) towards an edge of the deflector in a direction perpendicular to the median plane (PM).