GB2403605A - Machine cooling tube with spiral flow - Google Patents
Machine cooling tube with spiral flow Download PDFInfo
- Publication number
- GB2403605A GB2403605A GB0314592A GB0314592A GB2403605A GB 2403605 A GB2403605 A GB 2403605A GB 0314592 A GB0314592 A GB 0314592A GB 0314592 A GB0314592 A GB 0314592A GB 2403605 A GB2403605 A GB 2403605A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dynamoelectric machine
- tube
- fluid cooled
- cooled dynamoelectric
- tubes
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
Abstract
The invention relates to rotary and linear electric motors and generators in which cooling is effected by passing cooling fluid through cooling tubes. The cooling tubes are formed so that the cooling fluid rotates, or swirls, around the axis of the tube as it passes along a tube (fig. 1), i.e. the fluid's velocity includes a component orthogonal to the principal direction of flow. Various embodiments (fig.2) are proposed for generating the spiral motion, including ribbon inserts in the tube, and an offset flow entry into the tube (fig.3). The tube may also be cast with spiral interior cores. The tubes 4 may be fitted to the rotor (fig.4), the stator (fig.7) or the casing (fig.8) of the machine. The tubes may also be embedded in a winding, e.g. a squirrel cage winding, and may also be electrically conducting components of the winding.
Description
IMPROVEMENTS TO COOLING SYSTEM FOR
DYNAMOELECTRIC MACHINES
This invention relates to dynamoeleetric machines that are fluid cooled. In these machines, the cooling may take a number of forms including external cooling using a hollow jacket, or internal cooling using passageways of various forms on the stator and/or the rotor. The cooling fluid may be oil, water, or some other suitable transfer medium.
In its broadest aspect as set out in Claim 1, the invention is the use of cooling tubes having an arrangement which imparts a component velocity to the fluid that is orthogonal to the principal velocity of fluid flow. Various embodiments of cooling tubes that generate this orthogonal velocity component are described, as well as some constructional arrangements of these tubes in dynamoelectric machines, such as motors and generators which may be of the rotating or linear motion types.
Other aspects of the invention are outlined in subordinate claims.
Background explanations and specific embodiments of the invention are now described by way of example with reference to the accompanying drawings in which: Figure I shows an isometric view of the cooling tube.
Figure 2a shows a transverse section of a first embodiment of the cooling tube.
Figure 2b shows a transverse section of a second embodiment of the cooling tube.
Figure 2c shows a transverse section of a third embodiment of the cooling tube.
Figure 2d shows a transverse section of a fourth embodiment of the cooling tube.
Figure 2e shows a transverse section of a fifth embodiment of the cooling tube.
Figure 2f shows a transverse section of a sixth embodiment of the cooling tube.
Figure 2g shows a transverse section of a seventh embodiment of the cooling tube.
Figure 2h shows a transverse section of an eighth embodiment of the cooling tube.
Figure 3 shows a longitudinal section of an arrangement of the cooling tube within a dynamoelectric machine.
Figure 4 shows a section of an induction motor with a number of cooling tubes forming a"squirrel cage".
Figure 5 shows a section of an induction motor with a number of cooling tubes embedded in the longitudinal members of the winding.
Figure 6a shows a section of a permanent magnet motor with cooling tubes embedded in the rotor.
Figure 6b shows a section of a permanent magnet motor with cooling tubes embedded in a thermally conducting material on the outside of the rotor Figure 7 shows a section of an induction motor with cooling tubes running along the inner and outer ends of the winding slots and cooling tubes embedded in the stator.
Figure 8 shows a section of an induction motor with cooling tubes forming a cooling jacket on the outside of the stator.
With reference to Figure 1, the cooling tube carries cooling fluid. The features of the arrangement, described in detail with reference to subsequent figures, impart a component of fluid velocity that is orthogonal to the principal direction of cooling flow, i.e. they impart some component of rotational motion to the fluid. The tube is of a material with high thermal conductivity, and in some cases the tube may be of electrically conducting material.
With reference to Figure 2a, there is one wall 1 across the tube section, which may be connected thermally and electrically to the wall 2 of the tube, dividing the flow. This dividing wall is twisted about the axis of the tube, forming for example a helix, forcing the flows to spiral about the tube axis, i.e. imparting a fluid component velocity that is orthogonal to the principal flow direction. In some embodiments, the dividing wall may pass through the centre of the tube section, if the tube is symmetrical.
With reference to Figure 2b, there are two intersecting walls 3 and 4 across the tube section, which may be connected thermally and electrically to the wall 2 of the tube, dividing the flow. These dividing walls are twisted about the axis of the tube, forming for example a helix, forcing the flows to spiral about the tube axis, i.e. imparting a fluid component velocity that is orthogonal to the principal flow direction. In some embodiments, the dividing walls may pass through the centre of the tube section, if the tube is symmetrical.
With reference to Figure 2c, the wall 5 across the tube section, which may be connected at one end thermally and electrically to the wall 2 of the tube at 6, divides the flow. This dividing wall is twisted about the axis of the tube, forming for example a helix, forcing the flows to spiral about the tube axis, i.e. imparting a fluid component velocity that is orthogonal to the principal flow direction. In some embodiments, the dividing wall may pass through the centre of the tube section, If the tube is symmetrical. As shown in Figure 2c, the tube and dividing wall may be formed from a single wrapped piece of material and the seam at 6 closed by some means such as welding, brazing, gluing or soldering.
With reference to Figures 2d-2f, the cooling tubes may have 2, 3, 4 or a multiplicity of partial walls or ribs, each connected to the wall 2 of the tube. For example, protrusions 7 and 8 in Figure 2d are 2 ribs across the section of the tube. These ribs are twisted about the axis of the tube, forming for example a helix, forcing the flows to spiral about the tube axis, i.e. imparting a fluid component velocity that is orthogonal to the principal flow direction. The ribs may also conduct heat from the outer wall of the tube 2 into the fluid.
In further embodiments, as shown for example in Figure 2e, the tube and ribs are formed from wrapped sections 9,10, 11 and 12, and closed by some means such as welding, brazing, gluing or soldering.
With reference to Figure 2g, the ribs such as 13 or 14, which are twisted about the tube axis as described with reference to Figures 2d-2f, need not be orthogonal to the inner surface of the cooling tube.
With reference to Figure 2h, the cooling tube has internal surfaces of the tube wall 2 and surfaces of the ribs, such as 16 and 17, that are extended in surface area by various means such as corrugations, dimpling or perforations.
With reference to Figures 2c-2h, the ribs or protrusions may either be proportioned to have the same radial depth or protrusion along the length of the tube, all ribs having the same radial depth, or any radial depth that is compatible with diametrically opposite rib or protrusion.
In another embodiment of the invention, the spiralling fluid motion within the cooling tubes can be realized with cast tubes having a spiral cast centre that is formed from spiral cores, ie the casting cores are shaped to leave a spiral flow path for the molten metal which, after core removal, will provide a spiral cast to and within the outer tube casting.
Alternatively, as cast spiral inserts could be fitted with some interference into tube of the appropriate cross section which accomodates the spiral insert, or tubes could be cast around a spiral insert.
With reference to Figure 3, the main cooling tube or conduit 4 is arranged so that it is supplied with fluid by at least one flow entry tube, conduit or jet 14, the centreline of which is offset from the centreline of the main cooling tube, and the centre line of the flow entry tubes may also be angled to the principal axis of the main cooling tube. The offset and angle of incidence of the flow entry tube(s) cause the fluid flow in the main cooling tube to spiral about the axis of the main cooling tube, i.e. imparting a fluid component velocity that is orthogonal to the principal flow direction.
The cooling tubes, as described with reference to Figuresl to 3, may be applied to elements of both rotary and linear motion dynamoelectric machines.
With reference to Figure 4, the cooling tubes such as 4, carry cooling fluid as described with reference to Figures I and 2 and are both thermally and electrically conducting. A number of tubes are embedded in the rotor 2 of an induction motor and form what is known as a "squirrel cage". The rotor 2 is mounted on shaft 1 and interacts electromagnetically with stator 3. The squirrel cage acts as the secondary winding.
The cooling tubes, as described with reference to Figure 4, may also be applied to the forcer ol linear motion dynamoelectric machines.
With reference to Figure 5, the cooling tubes such as 4, carry cooling fluid as described with reference to Figures I and 2. In this case the longitudinal members 7 of the winding may have an optimised cross section shape, the winding being part of the rotor 2. A number of cooling tubes 4 are embedded in the longitudinal members of the winding and they are thermally connected to the winding. These cooling tubes may or may not also be electrically conducting components of the winding.
The cooling tubes, as described with reference to Figure 5, may also be applied to windings of the forcer of linear motion dynamoelectric machines.
With reference to Figure 6a, the cooling tubes 4 and 5 carry cooling fluid as described with reference to Figures I and 2. In this motor, salient poles 8 create the secondary electromagnetic field, and the cooling tubes are embedded in the rotor 2 close to or in between the poles. The cooling tubes are thermally connected to the rotor and are electrically isolated or made from an electrically non-conducting material.
The cooling tubes, as described with reference to Figure 6a, may be embedded close to or between the poles of the forcer of linear motion dynamoelectric machines.
With reference to Figure 6b, the cooling tubes 4 and 5 carry cooling fluid as described with reference to Figures I and 2. In this motor the cooling tubes are embedded in a thermally conducting material 9 on the outside of the rotor 2 close to or in between the poles 8. There may or may not be an outer shell 10 encasing the rotor and cooling tubes.
The cooling tubes are electrically isolated or made from an electrically non-conducting material.
The cooling tubes, as described with reference to Figure 6b, may be embedded in the thermally conducting material on the outer periphery of the forcer of linear motion dynamoelectric machines.
With reference to Figures 6a and 6b, the poles 8 may be permanent magnets or salient poles.
With reference to Figure 7, the cooling tubes 4, 5 and 6 carrying cooling fluid as described with reference to figures I and 2, form a part of the stator 3 of a motor. Three locations 4, 5 and 6 for the cooling tubes are shown. In position 4 they may be embedded in the stator outside of the winding slots l I on some or all of the centrelines of the stator teeth. They may be at the outer end 5 of the winding slot area 11 or the inner end 6 close to or covering the slot opening 12. The cooling tubes are thermally connected to the stator and may or may not be electrically conducting.
The cooling tubes, as described with reference to Figure 7, may also be applied to the stator of linear motion dynamoelectric machines.
With reference to Figure 8, the cooling tubes 4 carry cooling fluid as described with reference to Figures I and 2. Tubes are placed next to each other on the outer diameter of the stator 3 of a motor to form a cooling jacket. The cooling tubes may be embedded in a thermally conducting material 9 and may be enclosed by an external shell 13. The cooling tubes may or may not be electrically conducting.
The cooling tubes, as described with reference to Figure 8, may also be applied to the stator of linear motion dynamoclectric machines.
The cooling tubes, as previously described, may be substantially circular, elliptical, rectangular or any other manufacturable cross section. s
Claims (1)
- Claims I A fluid cooled dynamoelectric machine which has at least one tubeor conduit along which cooling fluid flows, the flow having a component of motion that is orthogonal to the principal direction of the tube or conduit.2 A fluid cooled dynamoelectric machine, according to claim 1, in which each tube is divided across its section by an internal wall that is twisted along the principal axis of the tube or conduit.3 A fluid cooled dynamoelectric machine, according to claim 1, in which the tube is divided across its section by a plurality of internal walls that are twisted along the principal axis of the tube or conduit.4 A fluid cooled dynamoelectric machine, according to claim 1, in which the cross- section of the tube has at least one internal rib that twists about the principal axis of the tube or conduit.A fluid cooled dynamoelectric machine, according to claims 4 to 6, in which the internal ribs are not orthogonal to the wall of the tube.6 A fluid cooled dynamoelectric machine, according to claim 4, in which all ribs have the same radial depth.7 A fluid cooled dynamoelectric machine, according to claim 4, in which some or all of the ribs have different radial depths.8 A fluid cooled dynamoelectric machine, according to claims 4 to 6, in which the tube is made from one or more wrapped sheets and sealed on its outer periphery.9 A fluid cooled dynamoelectric machine, according to claim 7, in which the wrapped tube is sealed on its outer periphery by soldering.A fluid cooled dynamoelectric machine, according to claim 7, in which the wrapped tube is sealed on its outer periphery by brazing.I I A fluid cooled dynamoelectric machine, according to claim 7, in which the wrapped tube is sealed on its outer periphery by welding.12 A fluid cooled dynamoelectric machine, according to claim 7, in which the wrapped tube is sealed on its outer periphery by gluing.13 A fluid cooled dynamoelectric machine, according to claims I to 12, in which internal features of the cross section are connected to the wall of the tube or conduit.14 A fluid cooled dynamoelectric machine, according to claim 1, m which the entry to each main cooling tube is arranged with at least one flow entry conduit of smaller cross sectional area than the main cooling tube.A fluid cooled dynamoelectric machine, according to claim 14, in which the major axis of each flow entry conduit is off centred to the axis of the main cooling tube. b16 A fluid cooled dynamoelectric machine, according to claim 14, in which the axis of flow entry conduits are angled to the principal flow direction of the main cooling tube.17 A fluid cooled dynamoelectric machine, according to claim 14, in which the axis of flow entry conduits are angled and off centred to the principal flow direction of the main cooling tube.18 A fluid cooled dynamoelectric machine, according to claims 1 to 17, in which the internal surface areas of the tube are increased by special features.19 A fluid cooled dynamoelectric machine, according to claim 18, in which the internal surfaces of the tube are corrugated.A fluid cooled dynamoelectric machine, according to claim 18, in which the internal surfaces of the tube are dimpled.21 A fluid cooled dynamoelectric machine, according to claim 18, In which the internal surfaces of the tube are perforated.22 A fluid cooled dynamoelectric machine, according to claims I to 21, in which the tube or conduit is made from an electrically conducting material.23 A fluid cooled dynamoelectric machine, according to claim 22, in which the internal features of the cross section are electrically connected to the wall of the tube or conduit.24 A fluid cooled dynamoelectric machine, according to claim 1-21, in which the tube or conduit is electrically isolated or made from an electrically non-conducting material.A fluid cooled dynamoelectric machine, according to claims 22 to 24, m which a number of tubes or conduits form a part of a rotor.26 A fluid cooled dynamoelectric machine, according to claim 25, in which a number of tubes or conduits form part of a winding.27 A fluid cooled dynamoelectric machine, according to claim 25, in which a number of conduits are embedded in the longitudinal elements of a winding.28 A fluid cooled dynamoelectric machine, according to claim 25, m which the tubes or conduits are located close to or in between permanent magnet poles.29 A fluid cooled dynamoelectric machine, according to claim 25, in which the tubes or conduits are located close to or in between salient poles.A fluid cooled dynamoelectric machine, according to claims 28 and 29, in which the tubes or conduits are embedded in the rotor.31 A fluid cooled dynamoelectric machine, according to claims 28 and 29, in which the tubes or conduits are embedded in a thermally conducting material on an outside diameter of the rotor. i32 A fluid cooled dynamoelectric machine, according to claim 31, in which the rotor, poles, cooling tubes and thermally conducting material are enclosed by a shell.33 A fluid cooled dynamoelectric machine, according to claims 22 to 24, in which a number of tubes or conduits form part of a stator.34 A fluid cooled dynamoelectric machine, according to claim 33, in which each tube or conduit is located within the winding slot area.A fluid cooled dynamoelectric machine, according to claim 34, in which each tube or conduit is located close to or covering the slot opening.36 A fluid cooled dynamoelectric machine, according to claim 34, in which each tube or conduit is located at the outermost end of the winding slot area.37 A dynamoelectric machine, according to claim 33, in which each tube or conduit is located on a diameter between the outer ends of the winding slots and the stator outer diameter.38 A dynamoelectric machine, according to claim 37, in which each tube or conduit is located on the centreline of some or all of the stator teeth.39 A dynamoelectric machine, according to claim 33, in which many tubes or conduits form a part of a cooling jacket located on the outer diameter of the stator, the tubes or conduits being embedded in a thermally conducting material.A dynamoelectric machine, according Lo claim 39, in which cooling jacket is enclosed by an outer shell.41 A dynamoelectric machine, according to Claim 1-24, which is a Imear motor.42 A dynamoelectric machmc, according to Claim 41, in which the cooling tubes are in the forcer.43 A dynamoelectric machine, according to Claim 41, in which the cooling tubes are in the stator.44 A dynamoelectric machine, according to Claim 1, in which the cooling tubes are formed by a cast spiral insert A dynamoelectric machine, according to Claim 1, in which the cooling tubes are cast with a cast spiral insert.Amendments to He claims have been filed as follows Claims 1 A fluid cooled dynamoelectric machine which has at least one electrically conductive tube or conduit along which cooling fluid flows, the flow having a component of motion orthogonal to the principal direction of the tube or conduit, and in which the tube or conduit forms part of an electrical circuit.2 A fluid cooled dynamoelectric machine, according to claim 1, in which each tube is divided across its section by an internal wall that is twisted along the principal axis of the tube or conduit.3 A fluid cooled dynamoelectric machine, according to claim 1, in which each tube is divided across its section by a plurality of internal walls that are twisted along the principal axis of the tube or conduit.4 A fluid cooled dynamoelectric machine, according to claim 1, in which the cross section of the tube has at least one internal rib that twists about the principal axis of the tube or conduit.A fluid cooled dynamoelectric machine, according to claim 4, in which the internal ribs are not orthogonal to the wall of the tube.6 A fluid cooled dynamoelectric machine, according to claim 4, in which all ribs have the same radial depth.7 A fluid cooled dynamoelectric machine, according to claim 4, in which some or all of the ribs have different radial depths.8 A fluid cooled dynamoelectric machine, according to claim 1, in which the tube is made from one or more wrapped sheets and sealed on its outer periphery.9 A fluid cooled dynamoelectric machine, according to claim 8, in which the wrapped tube is sealed on its outer periphery by soldering.A fluid cooled dynamoelectric machine, according to claim 8, in which the wrapped tube is sealed on its outer periphery by brazing.11 A fluid cooled dynamoelectric machine, according to claim 8, in which the wrapped tube is sealed on its outer periphery by welding.12 A fluid cooled dynamoelectric machine, according to claim 8, in which the wrapped Abe is sealed on its outer periphery by gluing. q13 A fluid cooled dynamoelectric machine, according to claim 1, in which the cooling tubes are formed by a cast spiral insert.14 A fluid cooled dynamoelectric machine, according to claim 1, in which the cooling tubes are cast with a cast spiral insert.A fluid cooled dynamoelectric machine, according to any of claims 1 to 14, in which internal features of the cross section are connected to the wall of the tube or conduit.16 A fluid cooled dynamoelectric machine, according to any of claims 1 to 15, in which the internal features of the cross section are electrically connected to the wall of the tube or conduit.17 A fluid cooled dynamoelectric machine, according to claim 1, in which the entry to each main cooling tube is arranged with at least one flow entry conduit of smaller cross sectional area than the main cooling tube.18 A fluid cooled dynamoelectric machine, according to claim 17, in which the major axis of each flow entry conduit is off-centred from the axis of the main cooling tube.19 A fluid cooled dynamoelectric machine, according to claim 17, in which the axis of flow entry conduits are angled to the principal flow direction of the main cooling tube.A fluid cooled dynamoelectric machine, according to claim 17, in which the axis of flow entry conduits are angled and off-centred from the principal flow direction of the main cooling tube.21 A fluid cooled dynamoelectric machine, according to claim 1, in which the internal surface area of the tube is increased by special features.22 A fluid cooled dynamoelectric machine, according to claim 21, in which the internal surfaces of the tube are corrugated.23 A fluid cooled dynamoelectric machine, according to claim 21, in which the internal surfaces of the tube are dimpled.24 A fluid cooled dynamoelectric machine, according to claim 21, in which the internal surfaces of the tube are perforated.A fluid cooled dynamoelectric machine, according to claim 1, in which a number of tubes or conduits form part of a winding.26 A fluid cooled dynamoelectric machine, according to any of claims 1 to 25, in which a number of tubes or conduits form part of a rotor.27 A fluid cooled dynamoelectric machine, according to claim 1, in which the tubes or conduits are located close to or between permanent magnet poles.28 A fluid cooled dynamoelectric machine, according to claim 1, in which the tubes or conduits are located close to or between salient poles.29 A fluid cooled dynamoelectric machine, according to claims 27 or 28, in which the tubes or conduits are embedded in the rotor.A fluid cooled dynamoelectric machine, according to claims 27 or 28, in which the tubes or conduits are embedded in a thermally conducting material near the outside diameter of the rotor.31 A fluid cooled dynamoelectric machine, according to claims 29 or 30, in which the cooling tubes, and other parts, are enclosed by a shell.32 A fluid cooled dynamoelectric machine, according to any of claims 1 to 25, in which a number of tubes or conduits form part of a stator.33 A fluid cooled dynamoelectric machine, according to claim 32, in which tubes or conduits are located within the winding slot area.34 A fluid cooled dynamoelectric machine, according to claim 33 in which tubes or conduits are located close to or covering the slot opening.A fluid cooled dynamoelectric machine, according to claim 33 in which tubes or conduits are located at the closed end of the winding slot (the slot bottom).36 A fluid cooled dynamoelectric machine, according to claim 32, in which tubes or conduits are located on a diameter between the outer ends of the winding slots and the stator outer diameter.37 A fluid cooled dynamoelectric machine, according to claim 36, in which tubes or conduits are located on the centreline of some or all of the stator teeth.38 A fluid cooled dynamoelectric machine, according to any of claims 1 to 25, which is a linear motor.39 A fluid cooled dynamoelectric machine, according to claim 38, in which the cooling tubes are in the forcer.A fluid cooled dynamoelectric machine, according to claim 38, in which the cooling tubes are in the stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0314592A GB2403605B (en) | 2003-06-21 | 2003-06-21 | Improvements to cooling system for dynamoelectric machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0314592A GB2403605B (en) | 2003-06-21 | 2003-06-21 | Improvements to cooling system for dynamoelectric machines |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0314592D0 GB0314592D0 (en) | 2003-07-30 |
| GB2403605A true GB2403605A (en) | 2005-01-05 |
| GB2403605B GB2403605B (en) | 2005-09-07 |
Family
ID=27637154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0314592A Expired - Fee Related GB2403605B (en) | 2003-06-21 | 2003-06-21 | Improvements to cooling system for dynamoelectric machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2403605B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005042314A1 (en) * | 2005-09-06 | 2007-03-08 | Behr Gmbh & Co. Kg | heat exchangers |
| EP2680404A1 (en) * | 2012-06-29 | 2014-01-01 | Alstom Technology Ltd | Conductor for an electric machine |
| EP2306132A3 (en) * | 2009-09-24 | 2015-03-04 | General Electric Company | Systems, methods, and apparatus for cooling a power conversion system |
| WO2015117209A1 (en) * | 2014-02-05 | 2015-08-13 | Weg Equipamentos Eletricos S.A - Motores | Internal ventilation system for electric rotary machine |
| WO2016023710A1 (en) * | 2014-08-14 | 2016-02-18 | Wobben Properties Gmbh | Synchronous generator, in particular four-pole synchronous ring generator of a gearless wind turbine, and wind turbine having said synchronous generator |
| EP2003764A3 (en) * | 2007-06-15 | 2016-11-30 | Traktionssysteme Austria GmbH | Rail vehicle direct drive including a stator cooling and its manufacturing method |
| DE102015210951A1 (en) * | 2015-06-15 | 2016-12-15 | Siemens Aktiengesellschaft | Cooling channel insert with net structure for a generator rotor |
| DE102019218088A1 (en) * | 2019-11-22 | 2021-05-27 | Zf Friedrichshafen Ag | Rotor for an electric machine |
| EP3916963A1 (en) * | 2020-05-28 | 2021-12-01 | Honeywell International Inc. | Conformal cooling devices for rotating generator elements and additive manufacturing processes for fabricating the same |
| EP3961869A3 (en) * | 2020-08-31 | 2022-03-09 | General Electric Company | Electric machine |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005042314A1 (en) * | 2005-09-06 | 2007-03-08 | Behr Gmbh & Co. Kg | heat exchangers |
| EP2003764A3 (en) * | 2007-06-15 | 2016-11-30 | Traktionssysteme Austria GmbH | Rail vehicle direct drive including a stator cooling and its manufacturing method |
| EP2306132A3 (en) * | 2009-09-24 | 2015-03-04 | General Electric Company | Systems, methods, and apparatus for cooling a power conversion system |
| EP2680404A1 (en) * | 2012-06-29 | 2014-01-01 | Alstom Technology Ltd | Conductor for an electric machine |
| WO2015117209A1 (en) * | 2014-02-05 | 2015-08-13 | Weg Equipamentos Eletricos S.A - Motores | Internal ventilation system for electric rotary machine |
| CN105960751A (en) * | 2014-02-05 | 2016-09-21 | 万高电机设备公司 | Internal ventilation system for electric rotary machine |
| US10236737B2 (en) | 2014-08-14 | 2019-03-19 | Wobben Properties Gmbh | Synchronous generator, in particular multipole synchronous annular generator of a direct-drive wind turbine, and wind turbine having the same |
| WO2016023710A1 (en) * | 2014-08-14 | 2016-02-18 | Wobben Properties Gmbh | Synchronous generator, in particular four-pole synchronous ring generator of a gearless wind turbine, and wind turbine having said synchronous generator |
| DE102014216148A1 (en) * | 2014-08-14 | 2016-02-18 | Wobben Properties Gmbh | Synchronous generator, in particular multi-pole synchronous ring generator of a gearless wind turbine, and wind turbine with selbigem |
| DE102014216148A8 (en) * | 2014-08-14 | 2016-12-22 | Wobben Properties Gmbh | Synchronous generator, in particular multi-pole synchronous ring generator of a gearless wind turbine, and wind turbine with selbigem |
| DE102015210951A1 (en) * | 2015-06-15 | 2016-12-15 | Siemens Aktiengesellschaft | Cooling channel insert with net structure for a generator rotor |
| DE102019218088A1 (en) * | 2019-11-22 | 2021-05-27 | Zf Friedrichshafen Ag | Rotor for an electric machine |
| EP3916963A1 (en) * | 2020-05-28 | 2021-12-01 | Honeywell International Inc. | Conformal cooling devices for rotating generator elements and additive manufacturing processes for fabricating the same |
| US11552523B2 (en) | 2020-05-28 | 2023-01-10 | Honeywell International Inc. | Conformal cooling devices for rotating generator elements and additive manufacturing processes for fabricating the same |
| EP3961869A3 (en) * | 2020-08-31 | 2022-03-09 | General Electric Company | Electric machine |
| US11581772B2 (en) | 2020-08-31 | 2023-02-14 | General Electric Company | Electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2403605B (en) | 2005-09-07 |
| GB0314592D0 (en) | 2003-07-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20070621 |