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OwnerLawrence Haydock, Peter John Wyles +1inventors
InventorsLawrence Haydock, Peter John Wyles, John Ernest Clive Bean
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An AC generator comprises a rotor 25 within a stator 24. The rotor carries a fan 27 at one end of the stator. The fan 27 is within a casing 30 which forms volute discharge passages 32. The fan 27 has blades 31 which project from the hub 28 at an angle which is oblique to the radial whereby those blades 31 trail the radial. The stator windings 23 form terminal leads 34 which are led from the end of the stator 24 remote from the fan 27. A circumferential array of cleats 35 which each have the form of a comb, support and guide the terminal leads 34 circumferentially, spaced from one another, to a certain location at the top from which the leads are taken and connected to terminals above. Those terminals are formed by the lower ends of busbars (56 to 58, 61 to 69) which extend through and which are supported by a structural panel of insulating material which forms an insulating barrier between the ends of those busbars. The upper end of each of those busbars forms the power output terminals U, V and W and the neutral terminals of the machine.
An alternating current machine comprising a rotor journalled for rotation within a stator comprising stator windings which are gathered together into an annular array at one end of the stator, the stator windings having terminal leads which are guided around respective circumferentially extending paths and coupled to terminal means, there being a plurality of such circumferentially extending paths, each at locations which are spaced axially from other such paths with respect to the stator, the improvement comprising a circumferential array of supporting and guiding means at said one end of the stator for guiding said terminal leads around said paths, the supporting and guiding means being spaced from one another circumferentially such that said terminal leads supported and guided thereby extend between them in free space and ventilation gaps are formed between adjacent terminal leads and supporting and guiding means whereby cooling of the terminal leads is enhanced by air flow through those ventilation gaps.
A terminal arrangement for leads from stator windings of an alternating current machine, comprising an array of structural members and busbars which extend through and which are supported by the array, the busbars having terminals at either end, wherein the improvement comprises the structural members of the array being formed of an electrically insulating structural material and being in face to face abutment whereby they form a structural panel which presents a substantially uninterrupted surface, each of the busbars which extends through and which is supported by the panel being a close fit within a respective through passage, the through passage being formed by appropriate grooves in abutting faces of the structural members, the arrangement being such that the panel substantially closes the surrounds of the busbars around which it is close fitted.
An alternating current machine comprising a rotor journalled for rotation within a stator, the stator comprising stator windings which project from one end of the stator for connection to a terminal arrangement, and the rotor being coupled with a radial flow fan for conjoint rotation, the fan being within a casing and being operable to cause air flow through the stator from said one end, the casing cooperating with the fan to provide a conduit for discharge of air flow from the fan, the conduit being in the form of a volute whereby its area increases progressively in the downstream direction, wherein the improvement comprises the fan having blades which project from the hub at an angle which is oblique to the radial.
Dependencies are inferred from the claim text.