DE886627C - Protection device for electrical machines, especially against splash water - Google Patents

Protection device for electrical machines, especially against splash water

Info

Publication number
DE886627C
DE886627C DES4761D DES0004761D DE886627C DE 886627 C DE886627 C DE 886627C DE S4761 D DES4761 D DE S4761D DE S0004761 D DES0004761 D DE S0004761D DE 886627 C DE886627 C DE 886627C
Authority
DE
Germany
Prior art keywords
grid
grids
sheet metal
metal strips
pair
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
DES4761D
Other languages
German (de)
Inventor
Karl Reschke
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to DES4761D priority Critical patent/DE886627C/en
Application granted granted Critical
Publication of DE886627C publication Critical patent/DE886627C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers

Description

Die -Erfindung betrifft eine Schutzvorrichtung für elektrische - Maschinen, insbesondere gegen Schwallwasser.The invention relates to a protective device for electrical machines, especially against splash water.

Es sind bereits Schutzvorrichtungen für elektrische Maschinen vorgeschlagen worden, die aus jalousieartig angeordneten und aufgebogenen Blechstreifen bestehen, die so geformt und gegeneinander versetzt sind, daß sie sich gegenseitig überlappen oder übergreifen. Die bekannten Schutzgitter dieser Art haben jedoch den Nachteil, daß sie keinen wirksamen Schutz gegen Schwallwasser u. dgl. bilden, da dieses von den Gittern zum Teil aufgefangen wird und nasse Wege bildet, auf denen das Schwallwasser selbst dann durch das Gitter hindurchdringt, wenn drei oder mehr Gitter in der bekannten Art vorgesehen sind. Dazu kommt, daß die bekannten Gitter einen unverhältnismäßig hohen Materialaufwand benötigen und viel Platz in Anspruch nehmen.Protective devices for electrical machines have already been proposed which consist of sheet metal strips arranged in a blind-like manner and bent upwards, which are shaped and offset from one another so that they overlap one another or overlap. However, the known protective grids of this type have the disadvantage that they do not provide effective protection against splash water and the like the grids is partially caught and forms wet paths on which the gushing water penetrates through the grid even if there are three or more grids in the known Kind are provided. In addition, the known grid is a disproportionate require a lot of material and take up a lot of space.

Gemäß der Erfindung werden Schutzvorrichtungen der vorerwähnten Art wesentlich verbessert und vereinfacht, indem mindestens zwei Gitterpaare vorgesehen werden, deren jedes aus zwei Reihen kulissenartiger Blechstreifen besteht, wobei die eine Reihe j edesmal die Lücken der anderen Reihe derart verdeckt, daß die zu einem Paar vereinigten Gitter vollkommen undurchsichtig sind. Die Gitterpaare haben vorteilhaft einen Abstand voneinander, der doppelt so groß ist wie der Abstand der Gitter eines Gitterpaares. Die Blechstreifen sind vorteilhaft 4.o bis 50° gegen die Gitterebene geneigt. Die Neigungswinkel der Blechstreifen des einen -Gitters eines Gitterpaares sind zweckmäßig nach einer anderen Seite geöffnet wie die Neigungswinkel der Blechstreifen des anderen Gitters dieses Gitterpaares.According to the invention, protective devices of the aforementioned type significantly improved and simplified by providing at least two pairs of grids each of which consists of two rows of backdrop-like sheet metal strips, where one row each time covers the gaps in the other row in such a way that it closes a pair of combined grids are completely opaque. The grid pairs have advantageous a distance from each other, which is twice as large as the distance of the Grid of a grid pair. The metal strips are advantageous 4.o to 50 ° against the lattice plane inclined. The angle of inclination of the sheet metal strips of one grid of a pair of grids are expediently open to a different side than the angles of inclination the sheet metal strip of the other grid of this grid pair.

In der Zeichnung sind einige Ausführungsbeispiele dargestellt.Some exemplary embodiments are shown in the drawing.

Fig. i zeigt einen Querschnitt durch ein aus zwei Gitterpaaren bestehendes Schutzgitter; Fig. 2 zeigt eine Draufsicht auf o ein einzelnes Gitter; Fig. 3 zeigt ein Anwendungsbeispiel, bei welchem das Schutzgitter im wesentlichen senkrecht angeordnet ist.Fig. I shows a cross section through one consisting of two pairs of grids Protective grille; Fig. 2 shows a plan view of a single grid; Fig. 3 shows an application example in which the protective grille is arranged essentially vertically is.

Das Schutzgitter i hat die Form eines Kastens 2, dessen Deckel 3 und Boden q. durch je ein Gitterpaar gebildet werden. Jedes der Gitterpaare 3 und 4 weist j alousieartige Gitter 5 und 6 auf. Die Blechstreifen 7 und 8 sind so angeordnet, daß sie mit der Gitterebene Winkel von q.o bis 5o° einschließen. Die Winkel der Blechstreifen 7 und 8 sind nach verschiedenen Seiten der Gitter geöffnet. Der Abstand zwischen den Gitterpaaren 3 und q. ist doppelt so groß wie der Abstand zwischen den beiden Gittern eines Gitterpaares.The protective grille i has the shape of a box 2, the lid 3 and Floor q. are each formed by a pair of grids. Each of the grid pairs 3 and 4 has j alousie-like grids 5 and 6. The sheet metal strips 7 and 8 are arranged so that they enclose angles of q.o to 5o ° with the lattice plane. The angles of the Sheet metal strips 7 and 8 are open on different sides of the grid. The distance between the grid pairs 3 and q. is twice the distance between the two grids of a pair of grids.

In Fig. 3 ist das Schutzgitter 9, das aus den Gitterpaaren zo und ix besteht, fast senkrecht angeordnet. Selbst bei dieser Lage des Schutzgitters 9 wird ein voller Schutz gegen Schwall- und Spritzwasser erzielt. Die elektrische Maschine ist bei 12 angedeutet.In Fig. 3, the protective grid 9, which consists of the grid pairs zo and ix consists, arranged almost vertically. Even with the protective grille in this position 9 a full protection against surge and splash water is achieved. The electric Machine is indicated at 12.

Claims (5)

PATENTANSPRÜCHE: z. Schutzvorrichtung für elektrische Maschinen, insbesondere gegen Schwallwasser, aus jalousieartig angeordneten und aufgebogenen Blechstreifen, die so geformt und so gegeneinander versetzt sind, daß sie sich gegenseitig überlappen oder übergreifen, dadurch gekennzeichnet, daß mindestens zwei Gitterpaare vorgesehen sind, deren jedes aus zwei Reihen Blechstreifen besteht, die derart kulissenartig angeordnet sind, daß die eine Reihe jeweils' die Lücken der anderen Reihe derart verdeckt, daß die zu einem Paar vereinigten Gitter vollkommen undurchsichtig sind. PATENT CLAIMS: e.g. Protective device for electrical machines, in particular against splash water, made of sheet metal strips arranged and bent up like blinds, which are shaped and offset from one another in such a way that they overlap one another or overlap, characterized in that at least two pairs of grids are provided are, each of which consists of two rows of sheet metal strips that are like a backdrop are arranged so that the one row each 'the gaps of the other row in such a way hides the fact that the grids combined to form a pair are completely opaque. 2. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Gitterpaare einen Abstand voneinander haben, der doppelt so groß ist wie der Abstand der Gitter eines Gitterpaares. 2. Apparatus according to claim i, characterized in that the grid pairs one Have a distance from each other that is twice the distance between the grids of one Grid pair. 3. Vorrichtung nach Anspruch. i, dadurch gekennzeichnet, daß die Blechstreifen q.o bis 50° gegen die Gitterebene geneigt sind. q.. 3. Apparatus according to claim. i, characterized in that the sheet metal strips q.o are inclined up to 50 ° to the plane of the grid. q .. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Neigungswinkel der Blechstreifen des einen Bleches in entgegengesetzter Richtung geöffnet sind wie die Neigungswinkel des anderen Blechstreifens desselben Gitterpaares. Device according to claim 3, characterized in that the angle of inclination of the sheet metal strips of one sheet are open in the opposite direction as the angle of inclination of the other sheet metal strip of the same pair of grids. 5. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Blechstreifen eines Gitters im wesentlichen senkrecht stehen zu den Blechen des anderen Gitters desselben Gitterpaares. Angezogene Druckschriften: Deutsche Patentschrift Nr. 649 896.5. Apparatus according to claim i, characterized in that that the metal strips of a grid are essentially perpendicular to the metal sheets of the other grid of the same grid pair. Printed publications: German U.S. Patent No. 649,896.
DES4761D 1941-03-30 1941-03-30 Protection device for electrical machines, especially against splash water Expired DE886627C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES4761D DE886627C (en) 1941-03-30 1941-03-30 Protection device for electrical machines, especially against splash water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES4761D DE886627C (en) 1941-03-30 1941-03-30 Protection device for electrical machines, especially against splash water

Publications (1)

Publication Number Publication Date
DE886627C true DE886627C (en) 1953-08-17

Family

ID=7470935

Family Applications (1)

Application Number Title Priority Date Filing Date
DES4761D Expired DE886627C (en) 1941-03-30 1941-03-30 Protection device for electrical machines, especially against splash water

Country Status (1)

Country Link
DE (1) DE886627C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357093A1 (en) * 1976-06-30 1978-01-27 Bbc Brown Boveri & Cie Air cooled electric motor protection grille - has series of curved lamellae in vane shape and matched to flow direction of motor cooling air
DE3037437A1 (en) * 1980-10-03 1982-05-06 Schorch GmbH, 4050 Mönchengladbach Cooling-air cover for inlet-outlet holes of rotating machine - has two sizes of venetian shutters with standard pattern rasters of slits

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE649896C (en) * 1935-11-09 1937-09-06 Siemens Schuckertwerke Akt Ges Splash water protection for electrical machines or the like.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE649896C (en) * 1935-11-09 1937-09-06 Siemens Schuckertwerke Akt Ges Splash water protection for electrical machines or the like.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357093A1 (en) * 1976-06-30 1978-01-27 Bbc Brown Boveri & Cie Air cooled electric motor protection grille - has series of curved lamellae in vane shape and matched to flow direction of motor cooling air
DE3037437A1 (en) * 1980-10-03 1982-05-06 Schorch GmbH, 4050 Mönchengladbach Cooling-air cover for inlet-outlet holes of rotating machine - has two sizes of venetian shutters with standard pattern rasters of slits

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