Stator for an axial flux electrical machine
OwnerAhsan Aminul, Keith Robert Pullen +1inventors
InventorsAhsan Aminul, Keith Robert Pullen, Ross Waring
Life of this patent
Estimating the term…
Abstract
The present invention provides an improved stator for an axial flux electrical machine in which the stator discs which contain the windings of the stator are spaced apart by spot spacers to provide improved quantity and control of the cooling fluids passing though the stator. The present invention further provides improved control of the flow of cooling fluids through the stator by controlling the points at which the cooling fluid enters and exits the space between the stator discs.
Claims18
A stator (2) for an axial flux electrical machine, the stator having one or more stator disc units (21) comprising:
- a plurality of stator discs (22) having a plurality of spot spacers (1) therebetween.
A stator according to any one of the preceding claims, wherein the spacers are uniformly arranged around the axis of the stator disc.
A stator according to any one of the preceding claims, wherein each stator disc unit also comprises one or more additional spacers (100), having a different shape to the spot spacers (1), between said stator discs.
An axial flux electrical machine comprising a stator according to any one of the preceding claims.
An axial flux electrical machine comprising:
- a rotor (30) having one or more rotor discs (31), and a stator (2) having one or more stator disc units (21), each stator disc unit comprising a plurality of stator discs (22), wherein
- a cooling fluid passageway is defined which includes a portion which passes through the or each space between the stator discs, and a further portion which passes between the stator disc unit (21) and the or each adjacent rotor disc (31).
An axial flux electrical machine comprising:
- a rotor (30) having one or more rotor discs (31), and a stator (2) having one or more stator disc units (21), each stator disc unit comprising a plurality of stator discs (22), having:
- a first cooling fluid passageway which includes a first portion which passes from a hollow interior of the rotor (30), radially through one or more passages in the rotor into the space between the inner circumference of the stator disc unit and the or each rotor and a second portion which passes between the stator disc unit (21) and the or each adjacent rotor disc (31);
- and
- a second cooling fluid passageway lying between adjacent stator discs and having at one or more inlets and one or more outlets on the circumference of the stator disc unit, such that, in use, cooling fluid enters the second cooling fluid passageway through an inlet and out again through an outlet.
A stator for an electrical machine, substantially as described herein with reference to the accompanying drawings.
An axial electrical machine substantially as described herein with reference to the accompanying drawings.
Dependencies are inferred from the claim text.