Dynamoelectric machine coil spaceblock having flow deflecting structure in coil facing surface thereof
A dynamoelectric machine includes a rotor having a plurality of adjacent coils; a spaceblock disposed between adjacent coils to define at least one cavity adjacent the spaceblock and between mutually adjacent coils; and the spaceblock including a body having one of: a substantially T-shaped cross-section, a substantially hexagonal cross-section and a substantially truncated arrow cross-section, the cross-section providing at least one flow deflector structure on at least one cavity facing surface of the spaceblock for intercepting and redirecting circulating coolant flow in the cavity towards a central region of the at least one cavity.
1. A dynamoelectric machine, comprising:
a spaceblock disposed between adjacent coils to define at least one cavity adjacent the spaceblock and between mutually adjacent coils,
the spaceblock including a flow deflector structure on a cavity facing surface of the spaceblock for intercepting and redirecting circulating coolant flow in the cavity towards a central region of the at least one cavity,
wherein the flow deflector structure includes a substantially planar radially inner facing surface and a tapered surface facing radially outward that meet at a junction in the at least one cavity.
2. The dynamoelectric machine of claim 1 , wherein the flow deflector structure includes a single flow deflector structure.
3. The dynamoelectric machine of claim 1 , wherein the at least one cavity includes a pair of cavities, one on each of opposing sides of the spaceblock, and wherein the spaceblock includes substantially T-shaped cross-section, providing a flow deflector structure to each of the pair of cavities.
4. The dynamoelectric machine of claim 3 , wherein each flow deflector structure spans only a portion of a depth of a respective cavity.
5. The dynamoelectric machine of claim 3 , wherein each elbow portion of the substantially T-shaped cross-section includes a curved surface.
6. The dynamoelectric machine of claim 1 , wherein the spaceblock has a substantially L-shaped cross-section.
7. The dynamoelectric machine of claim 6 , wherein an elbow portion of the substantially L-shaped cross-section includes a curved surface.
8. The dynamoelectric machine of claim 1 , wherein the flow deflector structure includes a substantially right angle triangular section having a rotor facing ledge structure.
9. The dynamoelectric machine of claim 8 , wherein the flow deflector structure spans only a portion of a depth of the at least one cavity.
10. The dynamoelectric machine of claim 1 , wherein the flow deflector structure extends from a radially extending surface of the spaceblock.
11. The dynamoelectric machine of claim 1 , wherein the flow deflector structure spans a substantial portion of a depth of the at least one cavity.
12. The dynamoelectric machine of claim 1 , wherein the flow deflector structure spans about one half of a depth of the at least one cavity.
13. A dynamoelectric machine, comprising:
a rotor having a plurality of adjacent coils;
a spaceblock disposed between adjacent coils to define at least one cavity adjacent the spaceblock and between mutually adjacent coils,
the spaceblock including a flow deflector structure on a cavity facing surface of the spaceblock for intercepting and redirecting circulating coolant flow in the cavity towards a central region of the at least one cavity,
wherein the flow deflector structure includes a substantially tapered radially outer facing surface and a substantially tapered radially inner facing surface that meet at a junction in the at least one cavity.