WO1997048168A1 - Stator for an electric machine - Google Patents

Stator for an electric machine Download PDF

Info

Publication number
WO1997048168A1
WO1997048168A1 PCT/DE1997/001147 DE9701147W WO9748168A1 WO 1997048168 A1 WO1997048168 A1 WO 1997048168A1 DE 9701147 W DE9701147 W DE 9701147W WO 9748168 A1 WO9748168 A1 WO 9748168A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine
housing body
housing
machine according
stator
Prior art date
Application number
PCT/DE1997/001147
Other languages
German (de)
French (fr)
Inventor
Arthur Fiedler
Eberhard Zahn
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP97930306A priority Critical patent/EP0904627A1/en
Publication of WO1997048168A1 publication Critical patent/WO1997048168A1/en

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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • 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
    • H02K5/08—Insulating casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates

Definitions

  • the invention relates to an electrical machine according to the preamble of claim 1.
  • Such a machine is known from EP-A-0 357 913.
  • the body of this machine is made using the centrifugal casting process. With such a method, practically only rotationally symmetrical bodies can be produced. The result of this is that irregularly shaped parts which protrude radially outward from the housing, such as the terminal box or the feet of the machine, must be attached separately to the housing.
  • a further disadvantage is that mnenrestde surfaces, such as the Standerboh ⁇ tion not properly covered by the casting compound are. In particular, the casting compound does not penetrate between the individual sheets of the stack of stand sheets, so that separate measures must be taken to prevent water from penetrating between the stand sheets if the machine is to be used as a so-called wet runner.
  • the invention has for its object to provide an electrical machine that can be manufactured much cheaper.
  • the problem can be solved by the features specified in the characterizing part of claim 1.
  • the manufacture of the housing body using the injection molding process enables the housing body to be designed differently from the cylindrical shape.
  • a perfect covering of the surface of the pillar hole is guaranteed.
  • the casting compound also penetrates between the stand sheets, so that they are protected against corrosion.
  • the molding compound during injection molding the stator winding gas-tight and without gas inclusions in the molding compound , there are also significant improvements to the machine in terms of electrical insulation. For example, a dielectric strength of greater than 1000 volts is achieved. This is also helped by the fact that the heat contained in the casting mass results in drying of the winding. Due to the tight enclosure of the stator winding, the winding is permanently protected against moisture and aggressive media such as ammonia, oil, frigen etc.
  • connection elements connected to the stator winding are injected into the walls of the terminal box. These connecting terminals are thus fixed in the terminal box ready for connection when the housing body is molded. If the connecting elements are designed as plug-in tabs, all that is required for the electrical connection of the machine is to plug a plug onto the plug-in tabs.
  • a centering ring on the front of the housing body can be injected on the drive side of the machine for connecting a part to be attached to the machine.
  • threaded holes can be provided in the centering ring for parts to be attached to the machine, for example a pump to be driven or a bearing plate. If the centering ring is not used, there is also the possibility of injecting threaded sleeves into the housing body, which are used both for fastening and for centering a part to be connected to the machine.
  • the invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing
  • FIG. 1 shows a stand of an electrical machine in longitudinal section.
  • FIG. 2 shows a stand of an electrical machine in a top view of the drive side of the
  • the housing body of an electrical machine is designated by 1.
  • This housing body 1 is produced by the injection molding process and encloses both the stator core 2 and the stator winding 3 of the machine inserted in its slots.
  • a terminal box 4 and feet 5 are molded in one piece on the outer periphery of the housing body 1.
  • plug-in tabs 7 connected to the stator winding 3 are also injected. These plug-in tabs 7 can be connected to a connector.
  • a centering ring 9 is injected into the front housing edge 8 on the drive side of the machine.
  • the centering ring 9 has threaded bores 10 for fastening a machine to be driven by the electrical machine or for attaching a bearing plate.
  • a bearing plate 11 is formed on the housing body 1 on the opposite side of the machine.

Abstract

In an electric machine, the stator, including the stator winding, is embedded in the body of a housing produced by a moulding process. The machine may be manufactured in a substantially more advantageous manner if the body (1) of the housing is produced by an injection moulding process and if the functional parts (4; 5) located on the outer circumference of the body (1) of the housing and required for operating the machine are shaped in a single piece with the body (1) of the housing.

Description

Beschreibungdescription
STANDER FÜR EINE ELEKTRISCHE MASCHINESTAND FOR AN ELECTRICAL MACHINE
Die Erfindung betrifft eine elektrische Maschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to an electrical machine according to the preamble of claim 1.
Eine solche Maschine ist durch die EP-A-0 357 913 bekannt. Bei dieser Maschine ist der Gehausekorper im Schleudergußver- fahren hergestellt. Mit einem solchen Verfahren lassen sich praktisch nur rotationssymmetrische Korper herstellen. Dies hat zur Folge, daß nach radial außen von dem Gehäuse abste¬ hende, unregelmäßig geformte Teile, wie beispielsweise der Klemmenkasten oder die Fusse der Maschine gesondert am Ge- hause angebracht werden müssen. Ein weiterer Nachteil ist, daß mnenliegende Flachen, wie beispielsweise die Standerboh¬ rung nicht einwandfrei von der Gußmasse bedeckt werden. Ins¬ besondere dringt die Gußmasse nicht zwischen die einzelnen Bleche des Standerblechpaketes, so daß gesonderte Maßnahmen ergriffen werden müssen um ein Eindringen von Wasser zwischen die Standerbleche zu verhinderen, wenn die Maschine als soge¬ nannter Naßlaufer eingesetzt werden soll.Such a machine is known from EP-A-0 357 913. The body of this machine is made using the centrifugal casting process. With such a method, practically only rotationally symmetrical bodies can be produced. The result of this is that irregularly shaped parts which protrude radially outward from the housing, such as the terminal box or the feet of the machine, must be attached separately to the housing. A further disadvantage is that mnenliegende surfaces, such as the Standerboh ¬ tion not properly covered by the casting compound are. In particular, the casting compound does not penetrate between the individual sheets of the stack of stand sheets, so that separate measures must be taken to prevent water from penetrating between the stand sheets if the machine is to be used as a so-called wet runner.
Der Erfindung liegt die Aufgabe zugrunde, eine elektrische Maschine zu schaffen, die wesentlich gunstiger gefertigt wer¬ den kann.The invention has for its object to provide an electrical machine that can be manufactured much cheaper.
Die Losung der gestellten Aufgabe gelingt durch die im Kenn¬ zeichen des Anspruches 1 angegebenen Merkmale. Die Herstel- lung des Gehausekorpers im Spritzgußverfahren ermöglicht von der zylindrischen Form abweichende Ausfuhrungen des Gehause¬ korpers. Außerdem ist eine einwandfreie Bedeckung der Flache der Standerbohrung gewährleistet. Infolge des beim Spritzgie¬ ßen herrschenden Druckes dringt die Gußmasse auch zwischen die Standerbleche, so daß diese gegen Korrosion geschützt werden. Da die Gußmasse beim Spritzgießen die Standerwicklung gasdicht und ohne Gaseinschlüsse in der Spritzmasse um¬ schließt, ergeben sich auch hinsichtlich der elektrischen Isolierung wesentliche Verbesserungen der Maschine.Es wird beispielsweise eine Spannungsfestigkeit von größer 1000 Volt erreicht. Hierzu trägt auch noch bei, daß durch die in der Gußmasse enthaltene Wärme eine Trocknung der Wicklung er¬ folgt. Durch den dichten Einschluß der Ständerwicklung ist auch ein beständiger Schutz der Wicklung gegen Feuchtigkeit und aggressive Medien, wie Amoniak, Öl, Frigen etc. gegeben.The problem can be solved by the features specified in the characterizing part of claim 1. The manufacture of the housing body using the injection molding process enables the housing body to be designed differently from the cylindrical shape. In addition, a perfect covering of the surface of the pillar hole is guaranteed. As a result of the pressure prevailing during injection molding, the casting compound also penetrates between the stand sheets, so that they are protected against corrosion. Since the molding compound during injection molding the stator winding gas-tight and without gas inclusions in the molding compound , there are also significant improvements to the machine in terms of electrical insulation. For example, a dielectric strength of greater than 1000 volts is achieved. This is also helped by the fact that the heat contained in the casting mass results in drying of the winding. Due to the tight enclosure of the stator winding, the winding is permanently protected against moisture and aggressive media such as ammonia, oil, frigen etc.
Vorteilhaft ist es, einen notwendigen Klemmenkasten und/oder Aufstellfüsse beim Herstellen des Gehäusekörpers gleich mit anzuformen. Damit entfallen gesonderte Montagevorgänge.It is advantageous to also form a necessary terminal box and / or feet when producing the housing body. This eliminates separate assembly processes.
Eine weitere Montagevereinfachung ergibt sich dadurch, daß mit der Ständerwicklung verbundene Anschlußelemente in Wan¬ dungen des Klemmenkastens eingespritzt sind. Damit werden diese Anschlußklemmen beim Spritzen des Gehäusekörpers an¬ schlußfertig im Klemmenkasten festgelegt. Sind die Anschluße- lemente als Stecklaschen ausgebildet, so braucht für das elektrische Anschließen der Maschine lediglich ein Stecker auf die Stecklaschen aufgesteckt zu werden.A further simplification of the assembly results from the fact that connection elements connected to the stator winding are injected into the walls of the terminal box. These connecting terminals are thus fixed in the terminal box ready for connection when the housing body is molded. If the connecting elements are designed as plug-in tabs, all that is required for the electrical connection of the machine is to plug a plug onto the plug-in tabs.
Auf der Antriebsseite der Maschine kann für den Anschluß ei- nes an die Maschine anzubauenden Teiles ein Zentrierring an der Stirnseite des Gehäusekörpers eingespritzt werden.A centering ring on the front of the housing body can be injected on the drive side of the machine for connecting a part to be attached to the machine.
Ferner können für an die Maschine anzubauende Teile, z.B. eine anzutreibende Pumpe oder ein Lagerschild, Gewindeboh- rungen in dem Zentrierring vorgesehen werden. Es besteht auch die Möglichkeit bei einem Verzicht auf den Zentrierring Ge¬ windehülsen in den Gehäusekörper einzuspritzen, die sowohl zum Befestigen als auch zum Zentrieren eines mit der Maschine zu verbindenden Teiles dienen. Anhand eines in der Zeichnung dargestellten Ausführungsbei¬ spieles wird die Erfindung nachfolgend noch näher erläutertFurthermore, threaded holes can be provided in the centering ring for parts to be attached to the machine, for example a pump to be driven or a bearing plate. If the centering ring is not used, there is also the possibility of injecting threaded sleeves into the housing body, which are used both for fastening and for centering a part to be connected to the machine. The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing
Es zeigt:It shows:
FIG 1 einen Ständer einer elektrischen Maschine im Längsschnitt FIG 2 einen Ständer einer elektrischen Maschine in Draufsicht auf die Antriebsseite der1 shows a stand of an electrical machine in longitudinal section. FIG. 2 shows a stand of an electrical machine in a top view of the drive side of the
Maschine.Machine.
Mit 1 ist der Gehäusekörper einer elektrischen Maschine be¬ zeichnet. Dieser Gehäusekörper 1 ist im Spritzgußverfahren hergestellt und umschließt sowohl das Ständerblechpaket 2 als auch die in dessen Nuten eingelegte Ständerwicklung 3 der Ma- schine. Am Außenumfang des Gehäusekörpers 1 sind ein Klemmen¬ kasten 4 und Aufstellfüsse 5 einteilig angespritzt.The housing body of an electrical machine is designated by 1. This housing body 1 is produced by the injection molding process and encloses both the stator core 2 and the stator winding 3 of the machine inserted in its slots. A terminal box 4 and feet 5 are molded in one piece on the outer periphery of the housing body 1.
In der einen Wand 6 des Klemmemkastens 4 sind ferner mit der Ständerwicklung 3 verbundene Stecklaschen 7 eingespritzt. Diese Stecklaschen 7 können mit einem Anschlußstecker verbun¬ den werden.In one wall 6 of the terminal box 4, plug-in tabs 7 connected to the stator winding 3 are also injected. These plug-in tabs 7 can be connected to a connector.
Auf der Antriebsseite der Maschine ist in den stirnseitigen Gehäuserand 8 ein Zentrierring 9 eingespritzt. Der Zentrier- ring 9 weist Gewindebohrungen 10 für die Befestigung einer von der elektrischen Maschine anzutreibenden Arbeitsmaschine oder für die Anbringung eines Lagerschildes auf.A centering ring 9 is injected into the front housing edge 8 on the drive side of the machine. The centering ring 9 has threaded bores 10 for fastening a machine to be driven by the electrical machine or for attaching a bearing plate.
An der gegenüberliegenden Seite der Maschine ist ein Lager- schild 11 an dem Gehäusekörper 1 angeformt. A bearing plate 11 is formed on the housing body 1 on the opposite side of the machine.

Claims

Patentansprüche claims
1. Elektrische Maschine, bei der der Ständer einschließlich der Ständerwicklung in einen in einem Gußverfahrren hergestellten Gehäusekörper eingebettet ist, d a d u r c h g e k e n n z e i c h n e t, daß der Gehausekörper (1) im Spritzgußverfahren hergestellt ist und daß am Außenumfang des Gehausekorpers (1) für den Betrieb der Maschine notwendige Funktionsteile (4;5) einteilig an dem Gehausekörper (1) angeformt sind.1. Electrical machine, in which the stator, including the stator winding, is embedded in a housing body produced in a casting process, characterized in that the housing body (1) is manufactured by injection molding and that on the outer circumference of the housing body (1) the functional parts necessary for the operation of the machine (4; 5) are integrally formed on the housing body (1).
2. Maschine nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß am Gehauseumfang ein Klemmenkasten (4) angeformt ist.2. Machine according to claim 1, d a d u r c h g e k e n n z e i c h n e t that a terminal box (4) is integrally formed on the housing circumference.
3. Maschine nach Anspruch loder 2, d a d u r c h g e k e n n z e i c h n e t, daß am Gehauseumfang Aufstellfüsse (5) angeformt sind.3. Machine according to claim loder 2, d a d u r c h g e k e n n z e i c h n e t that feet (5) are formed on the circumference of the housing.
4. Maschine nach Anspruch 1, 2 oder 3, d a d u r c h g e k e n n z e i c h n e t, daß mit der Standerwicklung (3) verbundene Anschlußelemente (7) in Wandungen des Klemmenkasten (4) eingespritzt sind.4. Machine according to claim 1, 2 or 3, d a d u r c h g e k e n n z e i c h n e t that with the stand winding (3) connected connecting elements (7) are injected into the walls of the terminal box (4).
5. Maschine nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß auf der antriebseitigen Stirnseite der Maschine ein Zentrierring (9) in den Gehausekorper (1) eingespritzt ist.5. Machine according to one of the preceding claims, that a centering ring (9) is injected into the housing body (1) on the drive end of the machine.
6. Maschine nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß auf der antriebseitigen Stirnseite der Maschine zentrisch zu deren Mittenachse angeordnete Gewindehulsen eingespritzt sind. 6. Machine according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that on the drive-side end of the machine arranged threaded sleeves are injected centrally to the central axis.
PCT/DE1997/001147 1996-06-12 1997-06-06 Stator for an electric machine WO1997048168A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97930306A EP0904627A1 (en) 1996-06-12 1997-06-06 Stator for an electric machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19623460.3 1996-06-12
DE1996123460 DE19623460A1 (en) 1996-06-12 1996-06-12 Electrical machine

Publications (1)

Publication Number Publication Date
WO1997048168A1 true WO1997048168A1 (en) 1997-12-18

Family

ID=7796760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001147 WO1997048168A1 (en) 1996-06-12 1997-06-06 Stator for an electric machine

Country Status (3)

Country Link
EP (1) EP0904627A1 (en)
DE (1) DE19623460A1 (en)
WO (1) WO1997048168A1 (en)

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CN112821646A (en) * 2019-11-18 2021-05-18 中车株洲电力机车研究所有限公司 Motor and train

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US7096566B2 (en) 2001-01-09 2006-08-29 Black & Decker Inc. Method for making an encapsulated coil structure
DE10103806A1 (en) * 2001-01-29 2002-08-29 Siemens Ag Stator generator system, in particular drive arrangement for a hybrid vehicle
DE10253235A1 (en) 2002-11-15 2004-06-17 Festool Gmbh electric motor
DE10254670A1 (en) * 2002-11-22 2004-06-24 Minebea Co., Ltd. Electric motor for a pump drive
US9634526B2 (en) 2012-01-26 2017-04-25 Continental Automotive Gmbh Rotor for a rotating electric machine and rotating electric machine
DE202012000842U1 (en) 2012-01-26 2012-02-03 Continental Automotive Gmbh Rotor for a rotating electric machine and electric motor
DE202012003643U1 (en) * 2012-04-10 2012-04-23 Continental Automotive Gmbh Rotor for a rotating electric machine and rotating electric machine
WO2013110656A1 (en) 2012-01-26 2013-08-01 Continental Automotive Gmbh Rotor for a rotating electric machine
EP3490115A1 (en) 2017-11-28 2019-05-29 Siemens Aktiengesellschaft Integrated terminal box of a rotational dynamo-electric machine

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Also Published As

Publication number Publication date
DE19623460A1 (en) 1997-12-18
EP0904627A1 (en) 1999-03-31

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