GB2255452A - Electric machines with iron-cored disc armature - Google Patents
Electric machines with iron-cored disc armature Download PDFInfo
- Publication number
- GB2255452A GB2255452A GB9109438A GB9109438A GB2255452A GB 2255452 A GB2255452 A GB 2255452A GB 9109438 A GB9109438 A GB 9109438A GB 9109438 A GB9109438 A GB 9109438A GB 2255452 A GB2255452 A GB 2255452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- magnetic
- coil
- electric machine
- discs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 66
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 16
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 8
- 230000004907 flux Effects 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 241000555745 Sciuridae Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/20—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having deep-bar rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/26—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the armature windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/54—Disc armature motors or generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Electric machines include novel construction versions of laminated iron-cored disc magnetic circuit assemblies fixed to the shaft or in the stator-housing, whereby magnetic fluxes pass axially opposite each other on the two sides during operation of the machine. The disc may comprise an iron-core ring 5 wound with an insulation coated ferromagnetic band 2 having ring coils 3 surrounding the dishes spaced by the distance equal to the pole pitch. Fig 13 shows a squirrel-cage arrangement and conductive bars 27, the rings 28, 29, and iron core ring 2. The arrangement may be employed in induction or commutated machines and other synchronous machines. Other arrangements of cores/windings are shown. <IMAGE>
Description
ELECTRIC MACHINES WITH IRON-CORED DISC ARMATURE
The invention relates to electric machines with iron-cored disc armature, wherein the annular iron core is wound with ferromagnetic band, the annular coil surrounding the iron core is evenly distributed on the surface or in the radial grooves machined on both sides of the iron core, and the wound-in disc armature is fixed to the grooved or toothed shaft with insulating resin, or a ring retainer suitable for receiving the coil heads before winding is fastened to the outer or inner mantle of the iron core to fix the armature to the housing or shaft. Furthermore, the invention relates to electric machines containing several iron-cored disc armatures, between them a so-called axial magnetic disc and to electric machines containing squirrel-cage axial disc between the armatures.
Iron-cored disc armatures with magnetic flux axially entering and emerging on the side are disclosed in several publications, e.g. 4.228.378 (Humbert), 4.319.152 abd 4.398.112 (van Gils), 3.142.913 (Weh), US-PS 3.440.464 (Tolmie), GB-PS 717.830 (Brooke), 4.651.041 (Shiroki), 4.604.540 (Fukami), 4.707.645 (Miyao) , 4.363.998 (Kliman), 4.370.582 (Addicott), 4.410.820 (Stanley), 4.501.996 (Gehorghe), FR-PS 1.155.050 (Ferrario) and
GFR-PS 2.541.694 (Siemens). In some of these constructions the iron core is made of solid material applicable only in case of low power and speed because of the high loss of iron caused by eddy currents.
In other cases the iron core is assembled in a complicated way with steel plate troughs or ferrite elements which besides the manufacturing difficulties is unfavourable for magnetization as well.
According to the winding is only on one side of the iron core.
In case of small number of poles, this is unfavourable due to the large size of the coil head, and magnetization of the iron core is utilized only on one of its sides. According to the, the coil on the surface links the opposite radial conductors only on the flange of the disc, while inside remains the adverse solution of the coil head. The winding method of the
FR-PS 1.155.050 is suitable only in two-pole arrangement.
Fixing the Siemens-type disc armature to the shaft is not solved in the various winding versions, while fixing the disc armature of the FR-PS 1.155.050 of to the house requires large radial space. The rotor of the induction double motor of the
US-PS 4.363.998 can be realized in a smaller size and with lower moment of inertia by using the squirrel-cage axial disc according to the invention.
The object of the present invention is to provide iron-cored disc type electric machines operating in a wide range of voltage, power and speed. This is accomplished with different versions of fixing the laminated iron-cored double-sided disc armature, by building in several disc armatures, with suitable magnetic arrangement and axial magnetic discs and squirrel-cage discs, as well as with the novel interconnection of the armature coils.
Accordingly, the first embodiment of the invention is a doublesided disc armature fixed to a shaft, coated with insulating layer at least on one side, with iron-core ring wound with ferromagnetic band, wherein ring coils surround the iron core in grooves machined on the surface of or in the iron core ring, wherein the ring coils are led to a commutator. Another embodiment is a double-sided disc armature provided with ring coils and an iron core ring with grooves. The third embodiment is an axial magnetic disc. Yet another embodiment is a squirrel-cage axial disc. The invention still relates to a squirrel-cage axial disc. The last embodiment of the invention is a multi-disc induction motor.
The invention will be described by way of example aath reference to the accompanying drawings, in which:
Figure 1 is a sectional view of a commutator-type d.c. disc
machines,
Figure 2 shows the fixing of the armature to the shaft,
Figure 3 is a detail showing a version of the single-sided
magnetic disc with auxiliary pole and compensating
coil winding,
Figure 4 is a shematic view of interconnecting the armature
coils with each other and with the commutator accord
ing to the invention,
Figure 5 is a laminated version of the single-sided magnetic
disc with induction coils,
Figure 6 is a sectional view of a commutator d.c. machine with
two disc armatures,
Figure 7 is a detail showing a version of the axial magnetic
disc,
Figure 8 is a sectional view of a synchronous machine with
permanent magnet,
Figure 9 is an embodiment of disc armature fixed to the stator
housing according to the invention,
Figure 10 is a pole of the synchronous machine assembled with
permanent and energized pole-parts,
Figure 11 is a sectional view of induction motor with squirrel
cage axial disc,
Figure 12 is a sectional view of an induction motor with two
disc armatures,
Figure 13 is a detail showing a version of the squirrel-cage
axial disc and
Figure 14 is a detail showing another embodiment of the squirrel
cage axial disc.
Figure 15 a shematic view of another way of interconnecting the
armature coils with each other and with the commutator.
In the commutator d.c. disc machine shown in Figure 1, ring coils 3 of the double-sided disc armature 1 are arranged on the surface of ferromagnetic iron core ring 2 wound up with insulated metal band at least on one side. Outlets of the coils are connected with segments of the commutator 8. The doublesided disc armature 1 is fixed to the shaft 4 with insulating resin 7. This contains fibreglass to increase its strength, the part of the shaft in contact with the insulating resin is provided with grooves or teeth for better engagement. Single sided magnetic discs 17 are fixed to the stator with interposed air gaps on both sides of the disc armature. The single-sided magnetic discs contain permanent magnetic poles 9 fixed to soft magnetic disc rings 10.
In Figure 2 an inner ring retainer 5 is in the interior of the iron core ring 2 fixed prior to positioning the ring coils 3, or ferromagnetic metal band is wound on to the inner ring retainer. This is provided with grooves to receive the inner heads of the ring coils. The shaft 4 fits into the inner ring retainer fixed with key 6 against turn, which is engaged with a separate groove or with one of the grooves of the coil heads.
The single-sided magnetic disc 17 version in Figure 3 is suitable for the machine according to Figure 1, where soft magnetic pole-bodies 11 and auxiliary pole-bodies 13 are fixed to one side of the soft magnetic disc ring 10, said pole-bodies 11 and 13 are provided with induction coils 12 and auxiliary pole coils 14, and compensating coil winding 30 is in the grooves of the soft magnetic pole-bodies.
The coil winding diagram in Figure 4 presents a version of linking the ring coils of the commutator machine provided with double-sided disc armature. The ring coils on the armature's iron core ring are evenly distributed, and the number of segments Z-in the commutator is the same as that of the ring coils. If the number of magnetic poles on each magnetic disc arranged on both sides of the commutator is 2p, then: Z=kp1 where k is a whole number. The coils are linked as one outlet of each coil is interconnected with the other outlet of the coil at step k from the former one, and so, the united outlets are connected with the commutator segment in the median angular position between the two coils. The number of brushes applicable on the commutator is 2p in the position corresponding to the neutral magnetic zone. These have alternately positive and negative polarity, the brushes of the same polarity are linked together. The number of brushes can be lowered at will, until indefinite one positive and one negative brushes remain.
The soft magnetic disc ring 10 in the single-sided magnetic disc 17 according to Figure 5 is wound up with insulated ferromagnetic band, and provided with annular induction coils 12 situated in grooves at least on one side of the disc ring.
These magnetic discs in the arrangement of Figure 1 - in case of magnetic flux varying in time - are suitable for a.c.
induction, and are spaced apart by a distance approximating to the pole pitch.
Two double-sided disc armatures are fixed to the shaft 4 in the machine shown in Figure 6, with adjacent single-sided magnetic discs 17 on the outside fixed to the stator, and axial magnetic discs fixed to the stator are between them. The permanent magnetic poles 9 of the axial magnetic discs are fixed to both sides of the soft magnetic supporting plate 15. According to the invention, the magnetic circuit is designed in a way that the magnetic flux passes axially on the soft-magnetic plate 15, hence thickness of the plate is only subject to the strength required.
In a further version of the axial magnetic discs 24 shown in
Figure 7, the permanent magnetic poles 9 are fixed into the cutouts of supporting plate 16. This is made of non-magnetic metal or plastic, and it can be assembled with several separate parts.
Figure 8 shows a synchronous machine with iron-cored disc armature, wherein the double-sided disc armature 1 is fixed to the stator-housing and single-sided magnetic discs 17 fixed to shaft 4 containing permanent magnetic poles are arranged on both sides. With the aid of locator 18 converting the stator position to electric signal and using electronic switch, the machine can be used as d.c. motor.
Figure 9 shows a double-sided disc armature 1 according to the invention fixed into the stator-housing. The iron core ring 2 wound with coil is fixed into the external ring retainer 26 before placement of the ring coils 3.
The ring retainer 26 is provided with grooves along the outer mantle for receiving the coil heads. Similarly, grooves are along the sides if the iron core ring 2 is also grooved. After winding, the disc armature can be pressed into the stator-house and secured against turn with screws or keys 6. The mantle grooves of the external ring retainer are not completely filled in by coils, thus they are used for the conduction of cooling air.
If the magnetic field of the synchronous machine according to
Figure 8 is to be regulated to a definite degree, the magnetic poles are fixed to the soft-magnetic disc ring 10 of a singlesided magneticdisc 17, wherein a soft-maqnetic pole-body 11 provided with induction coils 12 is between the Rrment magnetic poles 9,
as shown in Figure 10.
Figure 11 shows an induction disc motor with squirrel-cage axial disc according to the invention. The single-sided disc armatures 20 fixed in the stator - corresponding to the armature of the known double-disc flat air gap induction motor are grooved on one side and provided with polyphase a.c. coil winding. In case of small number of poles - owing to the difficult installation of the coil heads - use of the doublesided disc armatures developed and fixed according to the invention - is preferred to the single-sided disc armatures. In this case, only side of the double-sided disc armatures is utilized magnetically.
The squirrel-cage axial disc 21 fixed to the shaft is arranged between the disc armatures. Coils of the two disc armatures are linked or supplied so that the magnetic flux should pass only axially through the squirrel-cage axial disc, thus its thickness is subject to the size of the squirrel-cage coil and the strength required.
In the induction disc motor shown in Figure 12, two double sided disc armatures 1 are fixed in the stator house 25. The ring coils 3 of the disc armatures are interconnected and suppled as polyphase a.c. coil winding, so that the magnetic flux should pass axially through the squirrel-cage axial disc 21 between the two disc armatures and fixed to the shaft 4. A single-sided squirrel-cage disc 19 fixed to the shaft 4 is along each external side of the two disc armatures corresponding to the double-disc flat air gap induction motors.
In the squirrel-cage axial disc 21 shown in Figure 13, current conductive bars 27 are in the grooves of an iron-core ring 2, linked with external and internal tie rings 28 and 29 as squirrel-cage coil winding.
Figure 14 shows further variants of a squirrel-cage axial disc, where iron core elements 23 are fixed or embedded in the current conductive disc 22. The iron core elements may be made of solid, soft-magnetic iron or plates shaped as prism or segment depending on the manufacture, their thickness is the same or greater than that of the current conductive disc to function as cooling air fan by rising from the disc.
According to Figure 15, the coils are made of two coil parts connected in series and having the same number of turns. An order to eliminate magnetic assimmetries, the coil parts are arranged from each other within a distance corresponding to about the pole pitch. In this way, the voltage induced in the coil parts are added to each other.
The coil ends are connected to neighbouring commutator segments and, accordingly, they act as a winding.
It is also possible to apply the arrangement of the coil ends explained in connection with Figure 4 or to connect the coils to produce a multiphase A.C. winding.
Disc armatures can be produced in a wide range of parameters by using the technolgocially easily realizable design and fixing methods of the iron-cored disc armatures, linking the armature coils according to the invention, and by building in axial magnetic discs and squirrel-cage axial discs between several disc armatures. Length, space demand and powerloss of the coil heads in the disc armatures are favourably small. Consequently, and because of the small space demand and weight of the axial squirrel-cage and magnetic discs, the specific power and efficiency of these machines are higher. In addition, the applied construction solutions offer technolgoical benefits.
Claims (22)
1. An electric machine with an iron-cored disc armature in which one or more double-sided disc armatures are mounted between magnetic discs carrying magnetic poles or between discs with squirrel-cage coil windings, air gaps being provided between the discs, said armature being provided with an iron-core ring wound with a ferromagnetic band coated with an insulating layer at least on one side, ring-coils surrounding the iron core, wherein each coil is made of two coil-parts connected in series, having the same number of turns and being spaced from each other by a distance corresponding approximately to the pole pitch.
2. An electric machine according to Claim 1, wherein the core has radial grooves machined in both sides thereof, each groove carrying a coil part.
3. An electric machine according to Claim 1, wherein all the coil-parts are arranged side by side on the surface of the iron core.
4. An electric machine according to Claim 1, wherein the core has radial grooves machined in both sides therof, each groove carrying two coil parts.
5. An electric machine according to Claim 1, wherein all the coil-parts are arranged in pairs, one on the other on the surface of the iron core.
6. An electric machine according to any of Claims 2 to 5, wherein the ring coils of each armature are interconnected as one or polyphase a.c. coil winding and the iron core ring of the armature is fixed into an external ring retainer the outer mantle of which is provided with grooves to receive the coil-heads, and the wound up disc armature is fixed in the stator-housing fitting to the mantle of the external ring retainer.
7. An electric machine according to any of Claims 2 to 5, wherein the double-sided disc armature and a commutator are fixed to a shaft supported in bearings and two magnetic discs are fixed to a stator-housing on each side of the double-sided disc armature, the number of segments in the commutator being the same as that of the ring coils of the armature, and the ring coils being linked to each other and to the commutator in a way such that the first outlet of each coil is interconnected with the second outlet of the neighbouring coil and the coupled outlets are connected to the commutator segments, the number of brushes on the commutator being the same as the number of magnetic poles of the magnetic discs, brushes of the same polarity being linked together in the position corresponding to the connection of coupled outlets to the commutator segments of alternately positive and negative polarity.
8. An electric machine according to any of Claims 2 to 5, wherein the double-sided disc armature and a commutator are fixed to a shaft supported in bearings and two magnetic discs are fixed in a stator-housing, and the number of segments in the commutator is the same as the number of the ring coils of the armature (Z), the relationship between Z and the number of poles (2p) of the magnetic disc being
Z= kp +1
where k is a whole number, the ring coils being linked so that the first outlet of each coil is interconnected with the second outlet of the coil at an interval k, and the coupled outlets being connected with the commutator segments, at least one positive and one negative brush being pressed against the commutator in the position corresponding to the connection of coupled outlets to the commutator segment, the number of brushes on the commutator being up to 2p.
9. An electric machine according to Claim 8, wherein the two coil-parts are connected to a single coil in each ring coil of the armature, and the coupled outlets of the coils are connected to the appropriate commutator segment in the median angular position between the coils, and the brushes are in positions corresponding to the neutral magnetic zones.
10. An electric machine according to any of Claims 7 to 9, wherein insulating resin is provided between the double-sided disc armature for joining it to a grooved or toothed shaft.
11. An electric machine according to Claim 10, wherein two commutators are embedded in the insulating resin in the interior of the double-sided disc armature.
12. An electric machine according to any of Claims 7 to 9, wherein the internal ring retainer is fixed in the iron core ring of the armature, the inner mantle of the internal ring retainer being provided with grooves to receive the coil heads and the wound up disc armature being fixed to the shaft fitting into the aperture of the internal ring retainer.
13. An electric machine according to any of Claims 6 to 9, wherein two or more double-sided disc armatures and two single-sided magnetic discs are provided, said discs being arranged on each external side of the outer disc armatures, axial-magnetic discs being provided between adjacent pairs of disc armatures, the axial magnetic discs having independent magnetic field windings on soft-magnetic pole-bodies or permanent opposed magnetic poles being arranged in turn side by side in an axial direction, the axial magnetic discs being fixed to the shaft or the stator housing and air gaps being provided between the discs, the coils in the same phase-position in the disc armatures being connected in series or the armatures being independent with two or more commutator or a.c. coil windings.
14. An electric machine according to Claim 11, wherein the permanent magnetic poles or the soft magnetic pole-bodies of the axial magnetic discs provided with induction coils are fixed to both sides of a strength calculated soft-magnetic supporting plate.
15. An electric machine according to Claim 13, wherein the poles or pole-bodies of the axial magnetic disc are fixed by passing through cutouts in a strength calculated supporting plate.
16. An electric machine according to Claims 13, 14 or 15, wherein the axial magnetic disc is made of several parts.
17. An electric machine according to any of Claims 7 to 16, wherein each magnetic disc is provided with a laminated iron-core and induction coil winding.
18. An electric machine according to Claim 6, wherein two or more double-sided disc armatures are fixed to a stator housing and two single-sided squirrel-cage discs are fixed to a shaft along each external side of the two outer disc armatures, squirrel-cage axial discs being arranged between adjacent pairs of disc armatures, grooves or channels being evenly distributed between the outer and inner surface of a strength calculated iron core ring wound with a ferromagnetic band, and current conductive bars being carried in the grooves or channels, said current conductive bars being linked with the external and internal mantles of the iron core ring and the internal tie ring being fixed to the shaft, air gaps being provided between the discs, and the ring coils of the double-sided disc armatures being interconnected and supplied as a.c. coil winding, whereby magnetic flux passes axially through the squirrel-cage axial discs.
19. An electric machine according to Claim 18, wherein iron core elements axially conducting magnetic flux are fixed into or embedded in the cutouts of current conductive discs or squirrel-cage axial discs.
20. An electric machine according to Claim 18 or 19, wherein only squirrel-cage axial discs are fixed to the shaft, between them double-sided disc armatures are fixed to the stator housing, and two single-sided disc armatures with a.c. coil winding are fixed to the stator housing along each external side of the two outer squirrel-cage axial discs.
21. An electric machine according to any of Claims 3 to 10, wherein the shaft is divided into two parts and is provided with separate bearings, and extends on each side of the machine.
22. An electric machine substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9109438A GB2255452A (en) | 1991-05-01 | 1991-05-01 | Electric machines with iron-cored disc armature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9109438A GB2255452A (en) | 1991-05-01 | 1991-05-01 | Electric machines with iron-cored disc armature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9109438D0 GB9109438D0 (en) | 1991-06-26 |
| GB2255452A true GB2255452A (en) | 1992-11-04 |
Family
ID=10694298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9109438A Withdrawn GB2255452A (en) | 1991-05-01 | 1991-05-01 | Electric machines with iron-cored disc armature |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2255452A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1100188A2 (en) * | 1999-11-11 | 2001-05-16 | Ford Global Technologies, Inc. | Electric machine with permanent magnet poles and controllable rotor flux |
| WO2004098022A1 (en) * | 2003-04-28 | 2004-11-11 | Electro Magnetic Rams Limited | Improvements in electrical machines |
| WO2007021310A2 (en) | 2005-08-09 | 2007-02-22 | Bojiuc, Dumitru | Monopole filed electric motor generator |
| US7315105B2 (en) * | 2003-05-14 | 2008-01-01 | Smart Motor As | Device for an electrical machine |
| US7834503B2 (en) * | 2004-08-20 | 2010-11-16 | Clearwater Holdings, Ltd. | Immersed windings, monopole field, electromagnetic rotating machine |
| WO2011119574A1 (en) * | 2010-03-22 | 2011-09-29 | Regal Beloit Corporation | Axial flux electric machine and methods of assembling the same |
| JP5406390B1 (en) * | 2013-02-01 | 2014-02-05 | 森内 アツ子 | Multi-purpose shaft type 3ABC motor |
| US8963392B2 (en) | 2012-04-13 | 2015-02-24 | Regal Beloit America, Inc. | Axial load sharing bearing system and associated method of use |
| US9577478B2 (en) | 2013-05-29 | 2017-02-21 | Regal Beloit America, Inc. | Axial flux motor with stator pre-load |
| US9777735B2 (en) | 2012-07-20 | 2017-10-03 | Regal Beloit America, Inc. | Blower motor assembly having air directing surface |
| US10221855B2 (en) | 2012-07-20 | 2019-03-05 | Regal Beloit America, Inc. | Furnace air handler blower assembly utilizing a motor connected to an impeller fan that is suspended with mounting arms |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1037902A (en) * | 1964-03-28 | 1966-08-03 | Siemens Ag | A method of making the stator of an electric machine |
-
1991
- 1991-05-01 GB GB9109438A patent/GB2255452A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1037902A (en) * | 1964-03-28 | 1966-08-03 | Siemens Ag | A method of making the stator of an electric machine |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1100188A2 (en) * | 1999-11-11 | 2001-05-16 | Ford Global Technologies, Inc. | Electric machine with permanent magnet poles and controllable rotor flux |
| EP1100188A3 (en) * | 1999-11-11 | 2003-09-17 | Ford Global Technologies, Inc. | Electric machine with permanent magnet poles and controllable rotor flux |
| WO2004098022A1 (en) * | 2003-04-28 | 2004-11-11 | Electro Magnetic Rams Limited | Improvements in electrical machines |
| US7315105B2 (en) * | 2003-05-14 | 2008-01-01 | Smart Motor As | Device for an electrical machine |
| US7834503B2 (en) * | 2004-08-20 | 2010-11-16 | Clearwater Holdings, Ltd. | Immersed windings, monopole field, electromagnetic rotating machine |
| WO2007021310A2 (en) | 2005-08-09 | 2007-02-22 | Bojiuc, Dumitru | Monopole filed electric motor generator |
| EP1922796A2 (en) * | 2005-08-09 | 2008-05-21 | Bojiuc, Dumitru | Monopole filed electric motor generator |
| EP1922796A4 (en) * | 2005-08-09 | 2010-06-23 | Bojiuc Dumitru | Monopole filed electric motor generator |
| WO2011119574A1 (en) * | 2010-03-22 | 2011-09-29 | Regal Beloit Corporation | Axial flux electric machine and methods of assembling the same |
| US9391500B2 (en) | 2010-03-22 | 2016-07-12 | Regal Beloit America, Inc. | Axial flux electric machine |
| US8963392B2 (en) | 2012-04-13 | 2015-02-24 | Regal Beloit America, Inc. | Axial load sharing bearing system and associated method of use |
| US9777735B2 (en) | 2012-07-20 | 2017-10-03 | Regal Beloit America, Inc. | Blower motor assembly having air directing surface |
| US10221855B2 (en) | 2012-07-20 | 2019-03-05 | Regal Beloit America, Inc. | Furnace air handler blower assembly utilizing a motor connected to an impeller fan that is suspended with mounting arms |
| US10473108B2 (en) | 2012-07-20 | 2019-11-12 | Regal Beloit America, Inc. | Blower motor assembly having air directing surface |
| US10697460B2 (en) | 2012-07-20 | 2020-06-30 | Regal Beloit America, Inc. | Furnace air handler blower assembly utilizing a motor connected to an impeller fan that is suspended with mounting arms |
| US11306725B2 (en) | 2012-07-20 | 2022-04-19 | Regal Beloit America, Inc. | Furnace air handler blower assembly utilizing a motor connected to an impeller fan that is suspended with mounting arms |
| JP5406390B1 (en) * | 2013-02-01 | 2014-02-05 | 森内 アツ子 | Multi-purpose shaft type 3ABC motor |
| US9577478B2 (en) | 2013-05-29 | 2017-02-21 | Regal Beloit America, Inc. | Axial flux motor with stator pre-load |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9109438D0 (en) | 1991-06-26 |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |