Dynamoelectric machine ventilating system

Claim 2

A dynamoelectric machine comprising: a stator having windings thereon, a shaft extending axially and centrally through said stator, a rotor mounted on said shaft, said rotor comprising a plurality of pole pieces, a winding positioned on each of said pole pieces, said pole pieces defining an interpolar space therebetween, said rotor and said stator defining an annular gap therebetween, said windings each having at least one spacer member disposed therein, said spacer member being fabricated of a nonconducting, non-magnetic material, said spacer member being disposed at a predetermined position within said windings, the disposition of said spacer member within said windings forming at least one cooling duct extending in a generally radial direction through said winding, means for providing an axial flow of coolant fluid, and, means directing said coolant fluid through said radial cooling ducts, said means comprising a baffle member mounted on said rotor, said baffle member adapted to deflect said axial flow of coolant fluid into said radial cooling ducts.

Claim 3

The dynamoelectric machine of claim 1, wherein said baffle member adapted to deflect said axial flow of coolant fluid into said radial cooling ducts is attached on said shaft in said interpolar space, said baffle member being fabricated of non-conducting, non-magnetic material, said baffle member being closed at one end thereof, said closed end of said baffle member being disposed on said shaft an axial distance from said means for providing an axial flow of coolant fluid.

Claim 4

The dynamoelectric machine of claim 1, wherein said baffle arrangement adapted to deflect said axial flow of coolant fluid into said radial cooling ducts is fabricated of a non-conducting, non-magnetic material, said baffle member having a curved surface having an open end and a closed end, said baffle member being mounted on said shaft near a fixing point with said open end being adjacent to said means for providing an axial flow of coolant fluid, said baffle member and said shaft being spaced a predetermined radial distance apart at all axial points along said shaft in said interpolar space, said greatest radial distance between said baffle member and said shaft being disposed at a first point on said shaft lying adjacent said means for producing an axial flow of coolant fluid, said radial distance between said baffle member and said shaft at any predetermined point on said shaft between said first point and said fixing point decreasing as the axial distance between said predetermined point and said first point increases.

Claim 5

The dynamoelectric machine of claim 1, further comprising header means adapted to direct the coolant fluid deflected into said radial cooling ducts by said baffle member into said interpolar space.

Claim 6

The dynamoelectric machine of claim 1, wherein said pole pieces have a substantially radial passage extending therethrough, said substantially radial passage through said pole pieces registering with said radial cooling duct, said radial passage being adapted to direct said coolant fluid deflected into said radial cooling duct by said baffle member into said gap between said rotor and said stator.

Claim 7

The dynamoelectric machine of claim 1, wherein said rotor hAs a first end and second end thereon, first means for providing a first axial flow of fluid coolant attached to said first end of said rotor, said first means being adapted to provide said first axial flow of fluid coolant from said first end of said rotor toward said second end of said rotor, second means for providing a second axial flow of fluid coolant attached to said second end of said rotor, said second means being adapted to provide said second axial flow of fluid coolant from said second end of said rotor toward said first end of said rotor, said baffle member being mounted on said rotor in said interpolar space, said baffle member being fabricated of a non-conducting, non-magnetic material, said baffle member being affixed to said rotor at a fixing point axially intermediate said first end and said second end of said rotor, said baffle member being adapted to deflect said first axial flow of fluid coolant into said radial cooling duct, said baffle member being adapted to deflect said second axial flow of coolant fluid into said radial cooling duct.

Claim 8

A dynamoelectric machine comprising: a stator having windings thereon, a shaft extending centrally and axially through said stator, a rotor mounted on said shaft, said rotor comprising a plurality of pole pieces, said pole pieces defining an interpolar space therebetween, said rotor and said stator defining an annular gap therebetween, said windings each having at least one spacer member disposed therein, said spacer member being fabricated of a non-conducting, non-magnetic material, said spacer being disposed at a predetermined position within said windings, the disposition of said spacer member within said windings forming at least one cooling duct extending in a generally radial direction through said windings, means for providing an axial flow of coolant fluid, and, means directing said coolant fluid through said radial cooling ducts, said means comprising said shaft having an internal central passage therein, said shaft being closed at one terminus thereof, said shaft having a plurality of radially outward directed conduits, said radially outward directed conduits being connected to transmit coolant fluid from said central passage in said shaft to said radial cooling ducts extending through said windings.

Claim 9

A dynamoelectric machine comprising: a stator having windings thereon, a shaft extending centrally and axially through said stator, a rotor mounted on said shaft, said rotor comprising a plurality of pole pieces, said pole pieces defining an interpolar space therebetween, said rotor and said stator defining an annular gap therebetween, said windings each having at least one spacer member disposed therein, said spacer member being fabricated of a non-conducting, non-magnetic material, said spacer being disposed at a predetermined position within said windings, the disposition of said spacer member within said windings forming at least one cooling duct extending in a generally radial direction through said windings, means for providing an axial flow of coolant fluid, and, means directing said coolant fluid through said radial cooling ducts, said means comprising said shaft having an internal central passage therein, said shaft being closed at one terminus thereof, said shaft having a plurality of radially outward directed conduits, said radially outward directed conduits being connected to transmit coolant fluid from said central passage in said shaft to said radial cooling ducts extending through said windings.

Claim 10

The dynamoelectric machine of claim 7, further comprising header means adapted to direct the coolant fluid transmitted into said radial cooling ducts by said radially outward directed conduits connected to said central passage in said shaft into said interpolar space.

Claim 11

The dynamoelectric machine of claim 7, wherein said pole pieces have a substantially radial passage extending therethrough, said substantially radial passage through said pole pieces registering with said radial cooling duct, said radial passages being adapted to direct said coolant fluid transmitted into said radial cooling duct by said radially outward directed conduits connected to said central passage in said shaft into said gap between said rotor and said stator.