Electric fan for an aircraft
AssigneeSafran Ventilation Systems
InventorsFabien Orlandini, Frederic Garcia
Life of this patent
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Abstract
A fan including a casing, a body defining, with the casing, a flow channel of an air flow, the body having an upstream cone, a central portion and a downstream cone, the downstream cone having at least a first opening, a shaft, a ventilation wheel, an electric motor, a first air bearing located upstream of the electric motor and supported by the upstream cone, a second air bearing located downstream of the electric motor, and a plurality of air passages are provided inside the body to direct the air flow from the first opening up to the upstream cone, the upstream cone including second openings for the air to pass through.
Claims16
An electric fan for an aircraft, comprising:
- a tubular casing extending along and around a longitudinal axis,
- a body extending along the axis and inside said casing, the body and the casing defining between them an annular flow duct of an air flow, the body comprising an upstream cone, a central segment and a downstream cone, the downstream cone comprising at least a first orifice for the passage of air from said duct into said body,
- a shaft extending along the axis and inside the body,
- a fan wheel carried by a first longitudinal end of the shaft,
- an electric motor mounted inside the body and around the shaft,
- a first air bearing for guiding the shaft located upstream of the electric motor and supported by the upstream cone,
- a first axial annular abutment connected to the central segment,
- a second air bearing for guiding the shaft located downstream of the electric motor and supported by the first axial annular abutment,
- a second axial annular abutment connected to the downstream cone, and
- an axial annular abutment disc supported by a second longitudinal end of the shaft opposite said first end,
- wherein a plurality of air passages are provided inside said body to convey said air flow from said first orifice to the upstream cone of the first air bearing, this upstream cone comprising second orifices for the passage of this air,
- and said second air passage orifices are formed in a transverse wall of the upstream cone which is connected to the central segment of the body.
Dependencies are inferred from the claim text.