DE1040118B - Electric machine with liquid-tight laminated core - Google Patents
Electric machine with liquid-tight laminated coreInfo
- Publication number
- DE1040118B DE1040118B DEI9527A DEI0009527A DE1040118B DE 1040118 B DE1040118 B DE 1040118B DE I9527 A DEI9527 A DE I9527A DE I0009527 A DEI0009527 A DE I0009527A DE 1040118 B DE1040118 B DE 1040118B
- Authority
- DE
- Germany
- Prior art keywords
- resin
- winding
- synthetic resin
- layer
- liquid
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
DEUTSCHESGERMAN
Seit langem wird das Isoliermaterial von Wicklungen elektrischer Maschinen mit Imprägniermitteln behandelt, und die Hohlräume werden mit Füllmassen ausgefüllt zum Schütze gegen den Einfluß von Feuchtigkeit, die Windungsschlüsse oder Erdschlüsse gegen das Eisenpaket und damit Zerstörung der Wicklungen verursachen. Es hat in neuerer Zeit auch nicht an Versuchen gefehlt, durch Verklebung der Eisenbleche des Statorpaketes, das die Wicklungen in Nuten trägt, mit Kunststoffen und Anbringung eines Schutzüberzuges aus Kunststoff an der Eisenoberfläche sowie durch Einbettung der Wicklungen in Kunststoff einen für längere Zeitdauer wirkenden Schutzeffekt gegen Wasser oder korrodierende Flüssigkeiten oder Gase zu erzielen. Das Ziel dieser Bestrebungen lag meist darin, wasserfeste Unterwassermotoren zu bauen, deren Wicklungen in dauerndem Kontakt mit dem Wasser sind.For a long time, the insulating material of windings in electrical machines has been treated with impregnating agents, and the cavities are filled with filling compounds to protect against the influence of moisture, the interturn faults or earth faults against the iron package and thus destruction of the windings cause. In recent times there has also been no lack of attempts by gluing the iron sheets of the stator core, which carries the windings in slots, with plastics and a protective coating made of plastic on the iron surface and by embedding the windings in plastic Protective effect against water or corrosive liquids or gases for a longer period of time to achieve. The goal of these efforts was mostly to build waterproof underwater motors, whose windings are in constant contact with the water.
Die Schwierigkeiten lagen einerseits darin, quellfreie Kunststoffe zu finden, die auch im Laufe der Zeit und bei höherer Temperatur nicht verspröden und zur Rißbildung neigen als Folge der Auswirkungen innerer Spannungen und ungleicher Wärmedehnungskoeffizienten im Vergleich zum Eisen und Kupfer von Statorpaket und Wicklung. Die Gefahr der Rißbildung wird um so größer, je größer die Abmessungen des Statorpaketes, je größer der Unterschied der Temperaturkoeffizienten von Kunststoff einerseits und Eisen respektiv Kupfer andererseits, je höher die Temperatur der Umgebung, je höher die im Kupfer und Eisen durch elektrisch bedingte Verluste und schlechte Wärmeleitfähigkeit des Kunststoffes bedingte Temperaturgefälle im Innern des kunststoff getränkten Wicklungs- und Blechpaketkörpers sind. Endlich zeigen sich auch noch Schwierigkeiten in der relativ geringen Abriebfestigkeit der meisten unverstärkten Kunststoffe, so daß beispielsweise der dünne Schutzbelag im Spalt zwischen Stator und Rotor in der Anwendung bei flüssigkeitslaufenden Motoren und bei Anwesenheit von Schmutzteilchen bald abgerieben war.On the one hand, the difficulties lay in finding non-swelling plastics that would also work in the course of the Time and at higher temperature do not become brittle and tend to crack as a result of the effects internal stresses and unequal thermal expansion coefficients compared to iron and copper of stator core and winding. The greater the dimensions, the greater the risk of cracking of the stator, the greater the difference in the temperature coefficient of plastic on the one hand and iron or copper on the other hand, the higher the temperature of the environment, the higher the temperature in the copper and iron caused by electrical losses and poor thermal conductivity of the plastic There are temperature gradients inside the plastic-soaked winding and laminated core. Finally there are still difficulties in the relatively low abrasion resistance of most of the unreinforced Plastics, so that, for example, the thin protective coating in the gap between the stator and rotor in the application in liquid-running engines and in the presence of dirt particles soon rubbed off was.
Der Erfindungsgegenstand fußt auf der bekannten Technik, Wicklungen von elektrischen Maschinen in
Kunstharze, z. B. Epoxyd- oder Polyesterharze, einzubetten,
wobei Füll- oder Streckmittel, wie Quarzsand u. dgl., zugemischt werden nicht nur im Interesse
der Verbilligung, sondern vor allem im Interesse der besseren "Wärmeleitung und des kleineren Wärmedehnungskoeffizienten
der Mischung. Dadurch wird ein geringeres Temperaturgefälle im Wicklungskörper und geringere mechanische Spannungen im Harzkörper
und somit größere Rißfreiheit erzielt. Es gelingt so gemäß bekannter Technik relativ leicht, einen harzumhüllten
Wicklungskörper zu schaffen, der im Be-Elektrische Maschine
mit flüssigkeitsdictitem BlechpaketThe subject of the invention is based on the known technology, windings of electrical machines in synthetic resins, z. B. epoxy or polyester resins, with fillers or extenders, such as quartz sand and the like., Not only in the interest of cheaper, but above all in the interest of better "heat conduction and the lower coefficient of thermal expansion of the mixture lower temperature gradient in the winding body and lower mechanical stresses in the resin body and thus greater freedom from cracks is achieved
with liquid-tight sheet package
Anmelder:
Fritz Isler, Zürich (Schweiz)Applicant:
Fritz Isler, Zurich (Switzerland)
Vertreter: Dipl.-Ing. E. F. Eitner, Patentanwalt,
München 5, Erhardtstr. 8Representative: Dipl.-Ing. EF Eitner, patent attorney,
Munich 5, Erhardtstr. 8th
Beanspruchte Priorität:
Schweiz vom 21. Dezember 1953Claimed priority:
Switzerland of December 21, 1953
reich der Stirnverbindungen der Wicklung, also außerhalb des lamellierten Eisenkörpers, wasserfest ist. Dagegen ist es bedeutend schwieriger, das Eindringen von Wasser zwischen den einzelnen Eisenblechen des Statorpaketes zu verhindern. Da die Wicklungen (meist aus Kupferdraht) auch im Bereich der Nuten des Statoreisenpaketes fest durch das imprägnierende, und porenfüllende Kunstharz eingeschlossen sind und zufolge des Wärmedehnungskoeffizienten 22.1O-6 für Kupfer sich etwa doppelt so stark bei Erwärmung des ganzen Körpers ausdehnen als das Eisen des Paketes, dessen Koeffizient etwa 11.10—6 beträgt, muß es zwangläufig Risse geben im Statorblechpaket. In der Erfindung wird angegeben, wie ein Statorblechkörper selbst unter starken Temperaturschwankungen rißfrei erhalten werden kann.Rich in the end connections of the winding, i.e. outside the laminated iron body, is waterproof. On the other hand, it is significantly more difficult to prevent water from penetrating between the individual iron sheets of the stator core. Since the windings (mostly made of copper wire) are also firmly enclosed in the grooves of the stator iron core by the impregnating and pore-filling synthetic resin and, due to the thermal expansion coefficient of 22.10 -6 for copper, expand about twice as much as the iron of the packet whose coefficient is about 11.10- 6 is, it must give cracks in the laminated stator core positively. The invention specifies how a laminated stator body can be obtained without cracks even under severe temperature fluctuations.
Ausgehend von einer elektrischen Maschine mit einem flüssigkeitsdichten Blechpaket, das aus abwechselnden Lagen von etwa 0,35 bis 0,5 mm starken genuteten Blechen bzw. von kunstharzgetränkten oder kunstharzbelegten Trägerschichten oder Kunstharzschichten besteht und durch Aushärten des Kunstharzes zu einem flüssigkeitsdichten Blechverbundkörper verfestigt wird, wird erfindungsgemäß die Stärke der Kunstharzträgerschicht oder der Kunstharzschicht so gewählt, daß im fertigen Zustand des Blechpaketes die Stärke dieser Schicht etwa 30 bis 200 °/o der Blechstärke beträgt.Based on an electrical machine with a liquid-tight laminated core, which consists of alternating Layers of about 0.35 to 0.5 mm thick grooved sheets or of synthetic resin soaked or synthetic resin-coated carrier layers or synthetic resin layers and by curing the synthetic resin is solidified to form a liquid-tight sheet-metal composite body, according to the invention, the Thickness of the synthetic resin carrier layer or the synthetic resin layer chosen so that in the finished state of the Laminated core, the thickness of this layer is about 30 to 200% of the sheet thickness.
Das Material des Klebers muß hierbei einen größeren Wärmedehnungskoeffizienten aufweisen als das Kupfer. Angenommen, die Schichtdicke des Klebers sei gleich der Dicke eines einzelnen Eisenbleches, so rechnet sich leicht aus, daß für den Fall eines Wär-The material of the adhesive must have a greater coefficient of thermal expansion than that Copper. Assuming that the layer thickness of the adhesive is equal to the thickness of a single sheet of iron, so it is easy to calculate that in the event of heat
«09 640/198«09 640/198
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1124429X | 1953-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1040118B true DE1040118B (en) | 1958-10-02 |
Family
ID=4558821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEI9527A Pending DE1040118B (en) | 1953-12-21 | 1954-12-18 | Electric machine with liquid-tight laminated core |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE534251A (en) |
| CH (1) | CH343016A (en) |
| DE (1) | DE1040118B (en) |
| FR (1) | FR1124429A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1149805B (en) * | 1960-05-03 | 1963-06-06 | Ernst Hauenstein | Liquid cooling for the electric drive motor of a centrifugal pump |
| DE1233481B (en) * | 1962-05-03 | 1967-02-02 | James Beresford & Son Ltd | Submersible electric motor |
| DE1282157B (en) * | 1963-12-05 | 1968-11-07 | Licentia Gmbh | Process for the production of a small electric motor closed on all sides by a casting compound |
| DE2103928A1 (en) * | 1970-01-29 | 1971-08-05 | Gen Electric | Dynamoelectric machine and process for manufacturing |
| DE3506648A1 (en) * | 1984-02-29 | 1985-08-29 | T. Smedegaard A/S, Glostrup | Motor housing for a split-cage pump, and a method for its production |
| DE10009376A1 (en) * | 2000-02-29 | 2001-08-30 | Wilo Gmbh | Motor-driven pump has wet rotor between suction port and impeller wheel with central suction opening enclosed by hollow cylindrical shaft carrying rotor's permanent magnets |
| DE102016111414A1 (en) * | 2016-06-22 | 2017-12-28 | Xylem Ip Management Sàrl | Pumping device for conveying a fluid to be pumped |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1209650B (en) * | 1961-02-13 | 1966-01-27 | Ziehl Abegg O H G | Mold for encapsulating the winding heads of electric motors with casting resin |
| EP0067704A3 (en) * | 1981-06-17 | 1983-03-09 | MATHER & PLATT LIMITED | Electric motors |
| DE8811420U1 (en) * | 1988-09-09 | 1989-01-19 | Halm, Richard, 7066 Baltmannsweiler | Wet rotor motor |
| US5288215A (en) * | 1992-11-19 | 1994-02-22 | Chancellor Dennis H | Integral motor centrifugal pump |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE209731C (en) * | ||||
| CH120076A (en) * | 1926-05-28 | 1927-06-16 | Baumann Carl | Bushing for gas-tight separation of the rotor and stator of the drive motor of electrically operated refrigeration machines. |
| US1875206A (en) * | 1930-11-28 | 1932-08-30 | Vincent G Apple | Insulation incased stator with glass lining |
| FR785513A (en) * | 1934-02-15 | 1935-08-09 | ||
| US2422591A (en) * | 1943-04-12 | 1947-06-17 | Sigmund Corp | Magnetizable core |
| US2422592A (en) * | 1943-05-24 | 1947-06-17 | Sigmund Corp | Preformed coating for magnetizable core |
| US2428816A (en) * | 1943-04-29 | 1947-10-14 | Sigmund Corp | Waterproof winding element |
| CH259947A (en) * | 1947-06-17 | 1949-02-15 | Moser Glaser & Co Ag | Process for the production of ferromagnetic bodies. |
| CH262559A (en) * | 1941-11-07 | 1949-07-15 | Westinghouse Electric Corp | Synthetic resin mixture and process for its production. |
| DE805408C (en) * | 1949-08-06 | 1951-05-17 | Pleuger K G | Device for protecting electric motors working under fluids against the ingress of contaminants |
| DE852709C (en) * | 1943-12-03 | 1952-10-16 | Basf Ag | Laminated iron core or similar laminated core combined with adhesive for electrical engineering purposes |
| GB688311A (en) * | 1949-09-08 | 1953-03-04 | Francois Jarsaillon | Improvements in or relating to circulator units for central heating systems |
| DE876643C (en) * | 1951-05-24 | 1953-05-15 | Erich Lutz | Liquid pump |
| DE898872C (en) * | 1951-07-04 | 1953-12-03 | Basf Ag | Process for the production of protective coatings |
| CH299842A (en) * | 1951-10-30 | 1954-06-30 | Oerlikon Maschf | Process for the production of stable laminated cores for magnetic cores, transformers and electrical machines. |
| DE920085C (en) * | 1949-11-29 | 1954-11-11 | Elektro Mechanik G M B H | Electrically driven submersible pump set, especially for pipe wells |
-
0
- BE BE534251D patent/BE534251A/xx unknown
-
1953
- 1953-12-21 CH CH343016D patent/CH343016A/en unknown
-
1954
- 1954-12-18 DE DEI9527A patent/DE1040118B/en active Pending
- 1954-12-21 FR FR1124429D patent/FR1124429A/en not_active Expired
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE209731C (en) * | ||||
| CH120076A (en) * | 1926-05-28 | 1927-06-16 | Baumann Carl | Bushing for gas-tight separation of the rotor and stator of the drive motor of electrically operated refrigeration machines. |
| US1875206A (en) * | 1930-11-28 | 1932-08-30 | Vincent G Apple | Insulation incased stator with glass lining |
| FR785513A (en) * | 1934-02-15 | 1935-08-09 | ||
| CH262559A (en) * | 1941-11-07 | 1949-07-15 | Westinghouse Electric Corp | Synthetic resin mixture and process for its production. |
| US2422591A (en) * | 1943-04-12 | 1947-06-17 | Sigmund Corp | Magnetizable core |
| US2428816A (en) * | 1943-04-29 | 1947-10-14 | Sigmund Corp | Waterproof winding element |
| US2422592A (en) * | 1943-05-24 | 1947-06-17 | Sigmund Corp | Preformed coating for magnetizable core |
| DE852709C (en) * | 1943-12-03 | 1952-10-16 | Basf Ag | Laminated iron core or similar laminated core combined with adhesive for electrical engineering purposes |
| CH259947A (en) * | 1947-06-17 | 1949-02-15 | Moser Glaser & Co Ag | Process for the production of ferromagnetic bodies. |
| DE805408C (en) * | 1949-08-06 | 1951-05-17 | Pleuger K G | Device for protecting electric motors working under fluids against the ingress of contaminants |
| GB688311A (en) * | 1949-09-08 | 1953-03-04 | Francois Jarsaillon | Improvements in or relating to circulator units for central heating systems |
| DE920085C (en) * | 1949-11-29 | 1954-11-11 | Elektro Mechanik G M B H | Electrically driven submersible pump set, especially for pipe wells |
| DE876643C (en) * | 1951-05-24 | 1953-05-15 | Erich Lutz | Liquid pump |
| DE898872C (en) * | 1951-07-04 | 1953-12-03 | Basf Ag | Process for the production of protective coatings |
| CH299842A (en) * | 1951-10-30 | 1954-06-30 | Oerlikon Maschf | Process for the production of stable laminated cores for magnetic cores, transformers and electrical machines. |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1149805B (en) * | 1960-05-03 | 1963-06-06 | Ernst Hauenstein | Liquid cooling for the electric drive motor of a centrifugal pump |
| DE1233481B (en) * | 1962-05-03 | 1967-02-02 | James Beresford & Son Ltd | Submersible electric motor |
| DE1282157B (en) * | 1963-12-05 | 1968-11-07 | Licentia Gmbh | Process for the production of a small electric motor closed on all sides by a casting compound |
| DE2103928A1 (en) * | 1970-01-29 | 1971-08-05 | Gen Electric | Dynamoelectric machine and process for manufacturing |
| DE3506648A1 (en) * | 1984-02-29 | 1985-08-29 | T. Smedegaard A/S, Glostrup | Motor housing for a split-cage pump, and a method for its production |
| DE10009376A1 (en) * | 2000-02-29 | 2001-08-30 | Wilo Gmbh | Motor-driven pump has wet rotor between suction port and impeller wheel with central suction opening enclosed by hollow cylindrical shaft carrying rotor's permanent magnets |
| DE102016111414A1 (en) * | 2016-06-22 | 2017-12-28 | Xylem Ip Management Sàrl | Pumping device for conveying a fluid to be pumped |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1124429A (en) | 1956-10-10 |
| BE534251A (en) | |
| CH343016A (en) | 1959-12-15 |
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