DE688956C - Arrangement for cooling closed electrical machines - Google Patents

Arrangement for cooling closed electrical machines

Info

Publication number
DE688956C
DE688956C DE1935A0077649 DEA0077649D DE688956C DE 688956 C DE688956 C DE 688956C DE 1935A0077649 DE1935A0077649 DE 1935A0077649 DE A0077649 D DEA0077649 D DE A0077649D DE 688956 C DE688956 C DE 688956C
Authority
DE
Germany
Prior art keywords
cooling
electrical machines
arrangement
outer diameter
closed electrical
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.)
Expired
Application number
DE1935A0077649
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dipl-Ing Waldemar Alden
Original Assignee
Dipl-Ing Waldemar Alden
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 Dipl-Ing Waldemar Alden filed Critical Dipl-Ing Waldemar Alden
Application granted granted Critical
Publication of DE688956C publication Critical patent/DE688956C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/14Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle

Description

Bekannt sind Anordnungen zur Kühlung vollständig geschlossener elektrischer Maschinen in der Weise, daß das Statorblechpaket mit nach außen offenen Kühlnuten versehen ist. Ferner ist es bei vollständig geschlos·· senen außenbelüfteten elektrischen Maschinen nicht mehr neu, das Statorblechpaket mit zwei Preßringen zu versehen/ welche am "Paket derart befestigt sind, daß hierdurch das tragende Maschinengerüst gebildet wird, das mittels der Lagerschilde vollständig geschlossen wird.Arrangements for cooling completely closed electrical machines are known in such a way that the stator core is provided with cooling grooves that are open to the outside is. It is also the case with completely closed, externally ventilated electrical machines no longer new to provide the stator lamination stack with two compression rings / which on the "stack" are attached in such a way that the load-bearing machine frame is thereby formed is completely closed by means of the end shields.

Erfuidungsgemäß wird bei einer Kombination der obengenannten Bauarten die Kühlung der Maschine dadurch, noch weiter verbessert, daß in den Kühlnuten des Statorblechpaketes künstliche Luftwirbel erzeugt werden. Dies wird dadurch erreicht, daß der Außendurchmesser der Preßringe größer als der Bodendurchmesser der Kühlnuten, dabei jedoch kleiner als der Außendurchmesser des Systems der Kühlzähne gewählt wird.According to the invention, in a combination of the above-mentioned types, the cooling of the machine is improved even further, that artificial air vortices are generated in the cooling grooves of the stator core. this is achieved in that the outer diameter of the press rings is greater than the bottom diameter of the cooling grooves, but smaller than the outer diameter of the system the cooling teeth is selected.

Die Zeichnung zeigt ein Ausführungsbeispiel für den Gegenstand der Erfindung. Gemäß Abb. 1 werden die Bleche des Statorblechpaketes außen ringsherum mit eingestanzten Kühlnuten 6 versehen und derart zur Deckung gebracht, daß sie nach außen hin offene axiale Nuten besitzen. Preßringe 2, 3, deren Außendurchmesser größer als der Bodendurchmesser der Kühlnuten 6, dabei jedoch kleiner 'als der Außendurchmesser des Systems der zugehörigen Kühlzähne 8 ist, sind auf bekannte Art, z. B. mittels Bolzen, an dem Blechpaket derart befestigt, daß hieraus das tragende Maschinengerüst entsteht, welches durch, die Lagerschilde 10 geschlossen wird. Die umgebende äußere Luft wird mittels z. B. eines bekannten, auf der Motorwelle angebrachten Ventilators 1, der von einer luftsteuernden Haube umgeben ist, über den Preßring 3 hinweg durch, die Kuhhäuten 6 und über den Preßring 2 hinweggetrieben, der Kühlrippen 12 besitzt.The drawing shows an embodiment for the subject matter of the invention. According to Fig. 1, the laminations of the stator laminated core are stamped all around on the outside Cooling grooves 6 are provided and brought into congruence in such a way that they have axial grooves which are open towards the outside. Compression rings 2, 3, the outer diameter of which is greater than the bottom diameter of the cooling grooves 6, here but smaller 'than the outer diameter of the system of associated cooling teeth 8 are in a known manner, e.g. B. by means of bolts, attached to the laminated core in such a way that from this the supporting machine frame is created, which is closed by the end shields 10 will. The surrounding external air is by means of z. B. a known, on the motor shaft attached fan 1, which is controlled by an air Hood is surrounded, over the press ring 3 through, the cowhides 6 and over driven away the press ring 2, which has cooling fins 12.

; Wenn der Luftstrom den Flansch 9 des Preßringes 2 trifft, entsteht eine kräftige Wirbelung innerhalb der Kühlnuten 6 bzw. zwischen den Kühlzähnen 8, welche die Ableitung der Wärme aus dem Blechpaket sehr wirksam fördert. Auf Grund dieser guten Kühlung des Blechpaketes erzielt man kleine Dimensionen der Maschine, und somit werden auch deren Herstellungskosten besonders gering.; When the air flow hits the flange 9 of the Press ring 2 hits, there is a strong vortex within the cooling grooves 6 and between the cooling teeth 8, which dissipate the heat from the laminated core very effectively promotes. Due to this good cooling of the laminated core, small dimensions are achieved of the machine, and thus its production costs are also particularly low.

Claims (1)

Patentanspruch:Claim: Anordnung zur Kühlung vollständig geschlossener, außenbelüfteter elektrischer Maschinen, deren Statorblechpaket mit nach, außen offenen Kühlnuten sowie mit zwei Preßringen versehen ist, welche am Paket derart befestigt sind, daß hierdurch das tragende Maschinengerüst gebildet wird, das mittels der Lagerschilde vollständig geschlossen wird, dadurch gekennzeichnet, daß der Außendurchmesser der Preßringe (2, 3) größer als der Bodendurchmesser der Kühlnuten (6), jedoch kleiner als der Außendurchmesser des Systems der Kühlzähne (8) ist.Arrangement for cooling completely closed, externally ventilated electrical Machines whose stator laminated core has cooling grooves open to the outside and with two compression rings is provided which are attached to the package in such a way that thereby the supporting machine frame is formed by means of the end shields completely is closed, characterized in that the outer diameter of the Press rings (2, 3) larger than the bottom diameter of the cooling grooves (6), however is smaller than the outer diameter of the system of cooling teeth (8). Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE1935A0077649 1934-12-22 1935-11-15 Arrangement for cooling closed electrical machines Expired DE688956C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI688956X 1934-12-22

Publications (1)

Publication Number Publication Date
DE688956C true DE688956C (en) 1940-03-07

Family

ID=8556221

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1935A0077649 Expired DE688956C (en) 1934-12-22 1935-11-15 Arrangement for cooling closed electrical machines

Country Status (1)

Country Link
DE (1) DE688956C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855135C (en) * 1940-11-08 1952-11-10 Siemens Ag Closed electrical machine with an external cooling air flow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855135C (en) * 1940-11-08 1952-11-10 Siemens Ag Closed electrical machine with an external cooling air flow

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