Some embodiments provided rotor assemblies, comprising: a rotor core barrel comprising a wall extending, and at least two compression bridges each formed in the wall proximate one of the lateral ends and separated by a distance; an array of a plurality of magnets positioned on and spaced along the w
Some embodiments provided rotor assemblies, comprising: a rotor core barrel comprising a wall extending, and at least two compression bridges each formed in the wall proximate one of the lateral ends and separated by a distance; an array of a plurality of magnets positioned on and spaced along the wall between the compression bridges and about a circumference of the rotor core barrel; and one or more pre-stress wraps wrapped over the plurality of magnets and about the rotor core barrel along at least a portion of a length of the rotor core barrel between the compression bridges, wherein the compression bridges enable radial compression deflection, induced by radial compression of the rotor core barrel by the one or more pre-stress wraps, of the wall of the rotor core barrel at the compression bridges relative to the wall of the rotor core barrel proximate the lateral ends.
대표청구항▼
1. A rotor assembly, comprising: a rotor core barrel comprising a wall extending between lateral ends with at least two compression bridges each formed in the wall proximate one of the lateral ends and separated by a distance;an array of a plurality of magnets positioned on and spaced along the wall
1. A rotor assembly, comprising: a rotor core barrel comprising a wall extending between lateral ends with at least two compression bridges each formed in the wall proximate one of the lateral ends and separated by a distance;an array of a plurality of magnets positioned on and spaced along the wall between the compression bridges and about a circumference of the rotor core barrel; andone or more pre-stress wraps wrapped over the plurality of magnets and about the rotor core barrel along at least a portion of a length of the rotor core barrel between the compression bridges, wherein the compression bridges are configured to flex along lengths of the compression bridges when radial compression deflection, induced by radial compression of the rotor core barrel by the one or more pre-stress wraps, of the wall of the rotor core barrel occurs relative to the wall of the rotor core barrel proximate the lateral ends while inhibiting deflection at the lateral ends. 2. The rotor assembly of claim 1, wherein the compression bridges limit, as a function of the radial compression deflection enabled by the compression bridges, radial expansion deflection of the wall proximate the lateral ends away from a central axis that would otherwise be caused by the radial compression of the rotor core barrel along the at least the portion of the length of the rotor core barrel induced by the one or more pre-stress wraps. 3. The rotor assembly of claim 2, wherein the wall comprises a first thickness defining at least a portion of the compression bridges, and at least a second thickness adjacent to each compression bridge and between the compression bridges, wherein the second thickness is greater than the first thickness. 4. The rotor assembly of claim 3, wherein the wall has a third thickness proximate the lateral ends, wherein the third thickness is greater than the first thickness and the third thickness is separated from the second thickness by the compression bridges. 5. The rotor assembly of claim 1, further comprising: two restraining wraps each wrapped about the wall of the rotor core barrel proximate each of the lateral ends inducing a radial compression force and inhibiting radial expansion deflection of the wall at the lateral ends away from a central axis of the rotor core barrel. 6. The rotor assembly of claim 5, wherein at least one of the at least two compression bridges separates one of the two restraining wraps from a central magnetic receiving area of the rotor core barrel between the at least two compression bridges. 7. The rotor assembly of claim 6, wherein the rotor core barrel further comprises: restraining wrap grooves extending circumferentially about the rotor core barrel proximate the lateral ends of the rotor core barrel each formed between one of the lateral ends and a corresponding one of the at least two compression bridges. 8. The rotor assembly of claim 7, wherein the rotor core barrel further comprises: restraining wrap grooves extending circumferentially about the rotor core barrel proximate the lateral ends of the rotor core barrel and are each separated from the magnetic receiving area of the rotor core barrel by a corresponding one of the at least two compression bridges. 9. The rotor assembly of claim 1, wherein the rotor core barrel comprises a magnetic receiving area between the at least two compression bridges wherein a wall thickness at each of the compression bridges is less than a thickness of the wall along the magnetic receiving area of the rotor core barrel. 10. The rotor assembly of claim 1, wherein a thickness of the wall of at least a portion of the compression bridges is less than a thickness of the wall at the lateral ends. 11. The rotor assembly of claim 10, wherein the rotor core barrel further comprises: restraining wrap grooves extending circumferentially about the rotor core barrel proximate the lateral ends of the rotor core barrel each formed between one of the lateral ends and a corresponding one of the at least two compression bridges; andtwo restraining wraps each wrapped about the wall of the rotor core barrel within one of the restraining wrap grooves inducing a radial compression force and inhibiting radial expansion deflection of the wall at the lateral ends away from a central axis of the rotor core barrel. 12. The rotor assembly of claim 1, wherein the rotor core barrel further comprises: a cavity extending along the length of the rotor core barrel; anda first stub shaft and a second stub shaft each cooperated with and secured with the rotor core barrel at the lateral ends;wherein a first stub shaft comprises multiple outlet cooling conduits extending through a thickness of the first stub shaft with an interior end of each of the outlet cooling conduits interfacing with the cavity of the rotor core barrel; andwherein the second stub shaft comprises an inlet cooling conduit cooperated with the cavity of the rotor core barrel, such that rotation of the rotor core barrel draws air through the inlet cooling conduit of the second stub shaft, along the cavity and out of the multiple outlet cooling conduits decreasing an internal temperature of at least the rotor core barrel. 13. A rotor assembly, comprising: a rotor core barrel comprising a wall extending between lateral ends with at least two compression bridges each formed in the wall proximate one of the lateral ends and separated by a distance;an array of a plurality of magnets positioned on and spaced along the wall between the compression bridges and about a circumference of the rotor core barrel; andone or more pre-stress wraps wrapped over the plurality of magnets and about the rotor core barrel along at least a portion of a length of the rotor core barrel between the compression bridges, wherein the compression bridges enable radial compression deflection, induced by radial compression of the rotor core barrel by the one or more pre-stress wraps, of the wall of the rotor core barrel at the compression bridges relative to the wall of the rotor core barrel proximate the lateral ends;wherein the compression bridges limit, as a function of the radial compression deflection enabled by the compression bridges, radial expansion deflection of the wall proximate the lateral ends away from a central axis that would otherwise be caused by the radial compression of the rotor core barrel along the at least the portion of the length of the rotor core barrel induced by the one or more pre-stress wraps;wherein the wall comprises at least two channels circumferentially extending about the rotor core barrel defining the at least two compression bridges. 14. The rotor assembly of claim 13, further comprising: a restraining wrap groove extending circumferentially about the rotor core barrel proximate each of the lateral ends, and configured to receive and position a restraining wrap wrapped about the rotor core barrel proximate each of the lateral ends. 15. A rotor assembly, comprising: a rotor core barrel comprising a wall extending between lateral ends with at least two compression bridges each formed in the wall proximate one of the lateral ends and separated by a distance;an array of a plurality of magnets positioned on and spaced along the wall between the compression bridges and about a circumference of the rotor core barrel; andone or more pre-stress wraps wrapped over the plurality of magnets and about the rotor core barrel along at least a portion of a length of the rotor core barrel between the compression bridges, wherein the compression bridges enable radial compression deflection, induced by radial compression of the rotor core barrel by the one or more pre-stress wraps, of the wall of the rotor core barrel at the compression bridges relative to the wall of the rotor core barrel proximate the lateral ends;wherein the rotor core barrel further comprises:a cavity extending along the length of the rotor core barrel; anda first stub shaft and a second stub shaft each cooperated with and secured with the rotor core barrel at the lateral ends;wherein a first stub shaft comprises multiple outlet cooling conduits extending through a thickness of the first stub shaft with an interior end of each of the outlet cooling conduits interfacing with the cavity of the rotor core barrel; andwherein the second stub shaft comprises an inlet cooling conduit cooperated with the cavity of the rotor core barrel, such that rotation of the rotor core barrel draws air through the inlet cooling conduit of the second stub shaft, along the cavity and out of the multiple outlet cooling conduits decreasing an internal temperature of at least the rotor core barrel.
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이 특허에 인용된 특허 (13)
Zimmermann Hans (Monchaltorf CHX), Air-cooled rotating electrical machine.
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