Rotor assembly

Patent metadata

Field	Value
Publication number	US-10361601-B2
Application number	US-201615067823-A
Country	US
Kind code	B2
Filing date	Mar 11, 2016
Priority date	Aug 11, 2015
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

Disclosed herein is a rotor assembly, including a cylindrical housing coupled to an outer circumferential surface of a rotor body and configured to house a coil turn therein, a supporting unit disposed in the housing and configured to prevent the coil turn from being pushed in an axial direction of a rotor, and a vane ring coupled to one end of the housing and provided with blades guiding cooling fluid to the coil turn. The rotor assembly may include: coil turns each of which is formed by stacking conductors in a multilayer structure and includes a linear part interposed between teeth, and a curved part extending from the linear part and disposed on an outer surface of a spindle; first supporting blocks which are inserted into the curved part and disposed between the conductors; and a second supporting block which is disposed between the first supporting blocks.

First claim

What is claimed is:

1. A rotor assembly for a rotor including a spindle that extends from one end of a rotor body, the rotor assembly comprising:
a cylindrical housing to house a coil turn disposed around the spindle;
an annular spindle ring seated in an outer circumferential surface of the spindle:
an annular insulation ring interposed between the coil turn and the spindle ring and coupled to the outer circumferential surface of the spindle, the annular insulation ring having a specific width in an axial direction of the rotor;
a plurality of supporting blocks each of which has one end seated in an outer circumferential surface of the insulation ring to support the coil turn in the axial direction of the rotor; and
a vane ring coupled to one end of the housing and provided with a plurality of blades for guiding cooling fluid to the coil turn.

2. The rotor assembly according to claim 1 , wherein the vane ring comprises an annular frame coupled to the one end of the housing, and the plurality of blades disposed on an inner circumferential surface of the frame, the blades being spaced apart from each other and oriented obliquely in one direction.

3. The rotor assembly according to claim 1 , wherein the vane ring further comprises a stopper protruding from a portion of an outer circumferential surface of the frame, and the housing has a coupling depression into which the stopper is inserted.

4. The rotor assembly according to claim 3 , wherein the housing further comprises a guide groove so that when the vane ring is rotated in a direction perpendicular to a direction of insertion of the stopper in a state in which the stopper has been inserted into the coupling depression, the stopper is inserted into and moved in the guide groove.

5. The rotor assembly according to claim 1 , further comprising an insulation block interposed between the coil turn and each of the supporting blocks.

6. The rotor assembly according to claim 1 , wherein each of the supporting blocks has an opposite end that is disposed opposite to the one end and extends toward the housing, the opposite end of each supporting block including a stop protrusion inserted into a guide depression formed in the vane ring.

7. The rotor assembly according to claim 5 , wherein a plurality of holes are formed through a planar surface of each of the supporting blocks so that the cooling fluid passes through the plurality of holes.

8. The rotor assembly according to claim 7 , wherein a plurality of holes are formed through a planar surface of each of the insulation blocks at positions corresponding to the respective holes of the associated supporting block.

9. The rotor assembly according to claim 1 , wherein each supporting block includes:
a lower end that supports the coil turn in the axial direction of the rotor and is supported by a surface of the spindle ring; and
an upper end that supports the coil turn in the axial direction of the rotor and is supported by a surface of the vane ring.

10. The rotor assembly according to claim 9 , wherein the spindle ring includes:
a first support point for supporting the lower end of the supporting block; and
a second support point that is disposed opposite to the first support point and is supported by a seating recess formed in the spindle to seat the spindle ring.

Assignees

• Doosan Heavy Ind & Construction Co Ltd
• Doosan Heavy Ind Constr Co Ltd

Inventors

• Hwang Kye Ha

Classifications

• H02K9/197

  in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator · CPC title

• H02K1/32

  with channels or ducts for flow of cooling medium · CPC title

• H02K9/12

  wherein the cooling medium circulates freely within the casing · CPC title

• H02K3/24 Primary

  with channels or ducts for cooling medium between the conductors · CPC title

• H02K3/51

  applicable to rotors only · CPC title