US3844031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of mounting and forming dynamoelectric machine components
Assignee: General Electric Co
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Filing: 1973-08-15
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Granted: 1974-10-29
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Expires: 1993-08-15
Abstract
Abstract A method of forming and mounting a fan for use in cooling an annular group of stator winding end turns in a dynamoelectric machine. The method comprises the steps of forming in an annulus a plurality of cooling means which remain disposed generally in the plane of the annulus, and the annulus is then secured to an end ring of a rotatable assembly for the dynamoelectric machine. Thereafter, the cooling means is deformed from the plane of the annulus to extend over the outer periphery of the stator end turns. The method of making a dynamoelectric machine and the method of effecting improved concentricity of a fan in the manufacture of a dynamoelectric machine are also disclosed.
Inventors
- 👤 W Stone
- 👤 J Brunschwig
- 👤 K Zurbuch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:26
CPC Classifications
H; H02; H02K; H02K15/00; H02K9/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49316; Y10T29/49329; Y10T29/49826; Y10T29/49828; Y10T29/49829
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
106 words
A method of forming and mounting a fan for use in cooling an annular group of stator winding end turns in a dynamoelectric machine comprising the steps of: a. forming in an annulus adjacent the outer edge thereof a plurality of cooling means which remain disposed generally in the plane of said annulus; b. securing said annulus to an end ring of a rotatable assembly for said dynamoelectric machine; and then c. deforming said cooling means from the plane of said annulus to extend generally over the outer periphery of said annular group of stator winding end turns which may be disposed adjacent said cooling means.
Claim 2
Independent Claim
106 words
A method of forming and mounting a fan for use in cooling an annular group of stator winding end turns in a dynamoelectric machine comprising the steps of: a. forming in an annulus adjacent the outer edge thereof a plurality of cooling means which remain disposed generally in the plane of said annulus; b. securing said annulus to an end ring of a rotatable assembly for said dynamoelectric machine; and then c. deforming said cooling means from the plane of said annulus to extend generally over the outer periphery of said annular group of stator winding end turns which may be disposed adjacent said cooling means.
Claim 3
Dependent Claim
44 words
The method as set forth in claim 1, wherein said end ring includes a plurality of vanes extending therefrom, and said securing step comprises disposing said annulus on the ends of at least some of said vanes and connecting said annulus therewith against displacement.
Claim 4
Dependent Claim
63 words
The method as set forth in claim 2, wherein the deforming step comprises bending said cooling means from the plane of said annulus thereby to form a substantially cylindric chamber bounded by said vanes and said cooling means and into which said substantially annular group of stator winding end turns may be inserted for cooling upon rotation of said vanes and cooling means.
Claim 5
Dependent Claim
35 words
The method as set forth in claim 2, comprising the step of forming means adjacent the inner edge of said annulus for connection with said vanes substantially simultaneously with the forming of said cooling means.
Claim 6
Dependent Claim
30 words
The method as set forth in claim 1, wherein said forming step comprises serrating the outer edge of said annulus to form a plurality of serrations constituting said cooling means.
Claim 7
Dependent Claim
43 words
The method as set forth in claim 5, wherein the deforming step compriseS bending said serrations to form a set of vanes projecting from said serrated edge over the outer periphery of said annular group of stator winding end turns and adjacent thereto.
Claim 8
Dependent Claim
48 words
The method as set forth in claim 1, comprising the step of forming means adjacent the inner edge of said annulus for securing said annulus to said end ring, the forming of said securing means being substantially at the same time as the forming of said cooling means.
Claim 9
Dependent Claim
64 words
The method as set forth in claim 1, comprising the step of forming a set of openings in said annulus between the inner and outer edges thereof through which air is drawn for passage over said annular group of stator winding end turns upon rotation of said cooling means, the forming of said openings being substantially simultaneous with the forming of said cooling means.
Claim 10
Independent Claim
78 words
A method of forming and mounting a fan for cooling stator windings in a dynamoelectric machine comprising the steps of: a. forming mounting means on an annulus adjacent the inner edge thereof; b. mounting said mounting means on deformable means disposed on an end ring of a rotatable assembly; c. deforming said deformable means into displacement preventing engagement with said mounting means; and then d. forming cooling means on said annulus extending therefrom adjacent the outer edge thereof.
Claim 11
Independent Claim
78 words
A method of forming and mounting a fan for cooling stator windings in a dynamoelectric machine comprising the steps of: a. forming mounting means on an annulus adjacent the inner edge thereof; b. mounting said mounting means on deformable means disposed on an end ring of a rotatable assembly; c. deforming said deformable means into displacement preventing engagement with said mounting means; and then d. forming cooling means on said annulus extending therefrom adjacent the outer edge thereof.
Claim 12
Dependent Claim
46 words
The method as set forth in claim 9, wherein said end ring includes a plurality of radially disposed vanes extending therefrom, and said forming step comprises bending said cooling means away from the plane of said annulus into radially spaced and overlaying relation with said vanes.
Claim 13
Dependent Claim
29 words
The method as set forth in claim 9, wherein said mounting means includes a plurality of openings, and said mounting step comprises passing said openings over said deformable means.
Claim 14
Dependent Claim
33 words
The method as set forth in claim 9, wherein said deformable means include a plurality of studs, and said deforming step comprises staking said studs into displacement preventing engagement with said mounting means.
Claim 15
Dependent Claim
54 words
The method as set forth in claim 9, wherein said mounting means includes a set of indentures extending generally radially from the inner edge of said annulus, and said mounting step comprises passing said indentures over said deformable means and positioning said annulus in engagement with at least some portions of said end ring.
Claim 16
Dependent Claim
50 words
The method as set forth in claim 13, wherein said deformable means includes a set of deformable studs projecting from the portions of said end ring, and said deforming step comprises staking said deformable studs over the edges of said indentures thereby rigidly securing said annulus on said rotatable assembly.
Claim 17
Dependent Claim
29 words
The method as set forth in claim 9, wherein said forming step comprises bending said cooling means away from the plane of said annulus into positions substantially normal thereto.
Claim 18
Dependent Claim
41 words
The method as set forth in claim 9, wherein said first forming step comprises serrating the outer edge of said annulus to form a plurality of serrations constituting said cooling means, said serrating being substantially simultaneous with said first forming step.
Claim 19
Dependent Claim
32 words
The method as set forth in claim 16, wherein said second forming step comprises bending said serrations relative to said annulus and forming a set of vanes projecting from said serrated edge.
Claim 20
Independent Claim
85 words
A method of making a dynamoelectric machine comprising the steps of: a. forming a generally flat fan stamping; b. mounting said stamping adjacent to one end of an at least partially completed rotatable assembly with the axis thereof extending generally normal to the plane of said stamping; c. then deforming at least some portions of said stamping away from the plane thereof; d. inserting said rotatable assembly into a bore of a stator; and e. supporting said rotatable assembly for rotation in said stator bore.
Claim 21
Independent Claim
85 words
A method of making a dynamoelectric machine comprising the steps of: a. forming a generally flat fan stamping; b. mounting said stamping adjacent to one end of an at least partially completed rotatable assembly with the axis thereof extending generally normal to the plane of said stamping; c. then deforming at least some portions of said stamping away from the plane thereof; d. inserting said rotatable assembly into a bore of a stator; and e. supporting said rotatable assembly for rotation in said stator bore.
Claim 22
Dependent Claim
37 words
The method as set forth in claim 18, wherein said end of said rotatable assembly includes an end ring having a plurality of vanes extending therefrom, and said mounting step comprises securing said stamping to said vanes.
Claim 23
Dependent Claim
55 words
The method as set forth in claim 19, wherein at least some of said vanes include deformable studs projecting therefrom and said stamping includes a set of openings therein, and said mounting step further comprises passing said openings over said studs and deforming said studs into displacement preventing engagement with said stampings about said openings.
Claim 24
Dependent Claim
25 words
The method as set forth in claim 18, comprising the intermediate step of completing the assembly of said rotatable assembly subsequent to said mounting step.
Claim 25
Dependent Claim
32 words
The method as set forth in claim 21 wherein said completing step comprises securing another component of said rotatable assembly to another end thereof opposite that to which said stamping is mounted.
Claim 26
Dependent Claim
25 words
The method as set forth in claim 18, comprising the preliminary step of completing the assembly of the rotatable assembly prior to said mounting step.
Claim 27
Dependent Claim
48 words
The method as set forth in claim 18, wherein said forming step comprises further forming a plurality of cooling means adjacent the peripheral edge of said stamping, which cooling means remain disposed generally in the plane of said stamping, said cooling means constituting said portions of said stamping.
Claim 28
Dependent Claim
24 words
The method as set forth in claim 24, wherein said deforming step comprises bending said cooling means away from the plane of said stamping.
Claim 29
Dependent Claim
43 words
The method as set forth in claim 18, comprising the simultaneous step of forming means on said stamping for mounting engagement with the end of said rotatable assembly, the forming of said mounting means being substantially simultaneous with the forming of said stamping.
Claim 30
Dependent Claim
40 words
The method as set forth in claim 18, comprising the simultaneous step of forming a set of annularly disposed openings in said stamping through which air is drawn for cooling windings of said stator upon energization of said dynamoelectric machine.
Claim 31
Dependent Claim
32 words
the method as set forth in claim 18, wherein said forming step comprises serrating the peripheral edge of said stamping to form a plurality of serrations constituting said portion of said stamping.
Claim 32
Dependent Claim
37 words
The method as set forth in claim 28, wherein said deforming step comprises bending said serrations to form a set of vanes projecting from said serrated edge and angularly disposed relative to the plane of said stamping.
Claim 33
Dependent Claim
42 words
The method as set forth in claim 18, wherein said supporting step comprises deposing at least one end frame on said dynamoelectric machine in predetermined spaced relations with said stator and journaling said rotatable member in bearing means provided in said stator.
Claim 34
Dependent Claim
37 words
The method as set forth in claim 18, wherein said stator includes means for supporting opposite end frames, and said supporting step comprises journaling said rotatable assembly in bearing means provided in each of said end frames.
Claim 35
Independent Claim
73 words
A method of making a dynamoelectric machine comprising the steps of: a. attaching a generally planar member of sheet material to a rotatable assembly for said dynamoelectric machine; b. deforming portions of said attached member thereby to form a plurality of vanes extending away from the plane of said member and disposed generally concentrically about the axis of said rotatable assembly; and c. supporting said rotatable assembly for rotation within a wound stator.
Claim 36
Independent Claim
73 words
A method of making a dynamoelectric machine comprising the steps of: a. attaching a generally planar member of sheet material to a rotatable assembly for said dynamoelectric machine; b. deforming portions of said attached member thereby to form a plurality of vanes extending away from the plane of said member and disposed generally concentrically about the axis of said rotatable assembly; and c. supporting said rotatable assembly for rotation within a wound stator.
Claim 37
Dependent Claim
54 words
The method as set forth in claim 32, wherein said rotatable assembly includes on an end thereof a plurality of other vanes substantially concentric with said first named vanes, and said attaching step comprises disposing said member on the ends of a set of said other vanes and connecting said member thereto against displacement.
Claim 38
Dependent Claim
62 words
The method as set forth in claim 33, wherein the other vanes of said set each include a deformable stud, and said attaching step further comprises passing another portion of said member over said studs and deforming at least some of said studs into displacement preventing engagement with said other portion of said member for rigidly connecting it to said rotatable assembly.
Claim 39
Dependent Claim
50 words
The method as set forth in claim 33, wherein said deforming step comprises bending said portions of said member away from the plane thereof to form said first named vanes, said first named vanes and other vanes defining an annular space therebetween for receiving end turns of said wound stator.
Claim 40
Dependent Claim
42 words
The method as set forth in claim 32, wherein said rotatable assembly includes an end, and said attaching step comprises staking said member to said end in a position generally normal to the axis of said rotatable member for conjoint rotation therewith.
Claim 41
Dependent Claim
28 words
The method as set forth in claim 32, comprising the preliminary step of forming in said member said vanes which remain generally in the plane of said member.
Claim 42
Dependent Claim
22 words
The method as set forth in claim 37, wherein said deforming step comprises bending said vanes from the plane of said member.
Claim 43
Dependent Claim
31 words
The method as set forth in claim 32, comprising the preliminary step of serrating a peripheral edge of said member to form a plurality of serrations, said serrations constituting said vanes.
Claim 44
Dependent Claim
33 words
The method as set forth in claim 39, wherein said deforming step comprises bending from said serrated edge said vanes toward their positions disposed generally concentrically about the axis of said rotatable member.
Claim 45
Dependent Claim
36 words
The method as set forth in claim 32, comprising the preliminary step of forming a set of annularly disposed openings in said member through which air is drawn for cooling end turns of said wound stator.
Claim 46
Dependent Claim
44 words
The method as set forth in claim 32, wherein said supporting step comprises disposing at least one end frame on said dynamoelectric machine in predetermined spaced relation with said wound stator and journaling said rotatable assembly in bearing means provided in said end frame.
Claim 47
Dependent Claim
125 words
In the manufacture of a dynamoelectric machine having a fan attached to and rotatable with a rotatable assembly about its axis in said machine, the method of effecting improved concentricity of said fan about the axis of said rotatable assembly comprising the steps of: a. locating a generally planar, annular fan member on an end of said rotatable assembly in a located position generally concentric with and perpendicular to said axis thereof; b. securing said member in its located position to said end of said rotatable assembly; and c. deforming a plurality of fan vanes from the plane of said member adjacent its outer peripheral edge to positions extending generally perpendicular to the plane of said member while said member is in its located position.
Claim 48
Dependent Claim
125 words
In the manufacture of a dynamoelectric machine having a fan attached to and rotatable with a rotatable assembly about its axis in said machine, the method of effecting improved concentricity of said fan about the axis of said rotatable assembly comprising the steps of: a. locating a generally planar, annular fan member on an end of said rotatable assembly in a located position generally concentric with and perpendicular to said axis thereof; b. securing said member in its located position to said end of said rotatable assembly; and c. deforming a plurality of fan vanes from the plane of said member adjacent its outer peripheral edge to positions extending generally perpendicular to the plane of said member while said member is in its located position.
Claim 49
Dependent Claim
36 words
The method as set forth in claim 43, comprising the intermediate step of locating on the axis of said rotable assembly for performing the deforming step whereby said fan vanes are substantially equidistant from said axis.
Claim 50
Dependent Claim
50 words
The method as set forth in claim 43 comprising the preliminary step of predetermining the located position of said member by disposing on said end of said rotatable assembly a set of locating means generally concentric with said axis and a set of locating surfaces generally perpendicular to said axis.
Claim 51
Dependent Claim
35 words
The method as set forth in claim 45, wherein said locating step comprises passing a portion of said member over said locating means into locating engagement therewith and into seating engagement with said locating surfaces.
Claim 52
Dependent Claim
36 words
The method as set forth in claim 45, comprising the preliminary step of forming said member with a set of openings adjacent the inner peripheral edge of said member for locating engagement with said locating means.
Claim 53
Dependent Claim
46 words
The method as set forth in claim 47, wherein said locating step comprises, passing said set of openings over said set of locating means into locating engagement therewith and sealing said member in said set of locating surfaces thereby disposing said member in its located position.
Claim 54
Dependent Claim
62 words
The method as set forth in claim 48, wherein said securing step comprises deforming at leAst some of said locating means of said set thereof into engagement with said member about at least some of the openings of said set thereof thereby to seat said member on said set of locating surfaces and prevent displacement of said member from said rotatable assembly.
Claim 55
Dependent Claim
26 words
The method as set forth in claim 49, wherein said securing step further comprises staking said some of said locating means into engagement with said member.
Claim 56
Dependent Claim
38 words
The method as set forth in claim 47, wherein said securing step comprises deforming at least some of said locating means into engagement with said portion of said member thereby to locate said member perpendicularly of said axis.
Claim 57
Dependent Claim
35 words
The method as set forth in claim 43, comprising the preliminary step of forming said vanes in said member adjacent its outer peripheral edge with said vanes remaining substantially in the plane of said member.
Claim 58
Dependent Claim
22 words
The method as set forth in claim 52, wherein said deforming step comprises bending said vanes from the plane of said member.
Claim 59
Dependent Claim
34 words
The method as set forth in claim 43, comprising the preliminary step of serrating the outer peripheral portion of said member and forming therein vanes which remain substantially in the plane of said member.
Claim 60
Dependent Claim
32 words
The method as set forth in claim 54, wherein the deforming step comprises bending said vanes from the plane of said member to their respective positions extending generally perpendicular to said plane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |