CH95945A - Slip ring capsule for firedamp proof induction motors. - Google Patents
Slip ring capsule for firedamp proof induction motors.Info
- Publication number
- CH95945A CH95945A CH95945DA CH95945A CH 95945 A CH95945 A CH 95945A CH 95945D A CH95945D A CH 95945DA CH 95945 A CH95945 A CH 95945A
- Authority
- CH
- Switzerland
- Prior art keywords
- fan
- shells
- capsule according
- firedamp
- capsule
- Prior art date
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
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- 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
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/141—Means for supporting or protecting brushes or brush holders for cooperation with slip-rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Schleifringkapsel für schlagwettersichere Induktionsmotoren. In schlagwettergefährlichen Betrieben pflegt man die Elektromotoren entweder vollständig zu kapseln, oder man beschränkt sich bei In duktionsmotoren auf die Kapselung der Schleifringe als einzige Teile, an denen Fun ken auftreten können. Zu diesem Zwecke setzt man die Schleifringe meist fliegend auf das Wellenende und umgibt sie mit einen völlig geschlossenen, jedoch aufklappbaren Gehäuse, etwa nach dem Hauptpatent. Bei grösseren Motorleistungen und Drehzahlen wird nun durch Bürstenreibung und Strom übergang ziemlich viel Wärme erzeugt, wes halb es zweckmässig ist, die Schleifringe bezw. die Schleifringkapsel zu kühlen.
Nach der vorliegenden Neuerung wird durch einen mit dem Motor gekuppelten Ventilator Kühlluft aussen an den schlag wettersicher abschliessenden Wänden der Schleifringkapsel vorbeigetrieben.
Beispielsweise kann die Vorrichtung ge mäss der Zeichnung ausgeführt werden. Darin bezeichnet a die Motorwelle, b die Schleif ringe, c die an den Lagerschild h ange schraubte innere Schale der Kapsel, d die mit Scharnier g angeleckte äussere Schale. Diese wird nun durchsetzt von dem Lager zapfen n, der innerhalb der Schalen c d mit der Welle a durch eine Kupplung o verbun den ist und ausserhalb das Ventilatorrad p trägt. Aussen ist der Ventilator durch eine Schutz- und Führungswand q abgedeckt, in der sich die zentrale Öffnung r für den Ein tritt und die Randöffnungen s für den Aus tritt der Luft befinden. Die Schale d besitzt als Wärmeaustauschorgane Rippen t, an denen die Kühlluft vorbeistreicht.
Zur Beschleuni gung der Wärmeabgabe kann man zusätzlich auch die Innenseite der Schale d mit Kühl rippen u versehen und ein weiteres Ventilator rad v innerhalb der Schalen an der Welle a befestigen, das die erwärmte Luft von den Schleifringen an die gekühlte Aussenschale heranführt.
Die Kupplung o ist so ausgebildet, dass sie beim Aufklappen des äussern Kapselteils k gelöst wird und beim Schliessen der Kapsel ohne weiteres ihren Eingriff findet. Gemäss der Zeichnung ist das Wellenende mit zwei Mitnehmerstiften, die mit einer dämpfenden Hülle, wie Gummi oder Leder, bekleidet sein können, versehen, während sich an der innern Stirnseite des Zapfens n vier Löcher befinden, in deren je zwei die Stifte eingreifen.
Slip ring capsule for firedamp proof induction motors. In companies with a fire hazard, the electric motors are either completely encapsulated or, in the case of induction motors, they are limited to the encapsulation of the slip rings as the only parts where sparks can occur. For this purpose, the slip rings are usually placed overhung on the shaft end and surrounded by a completely closed but hinged housing, for example according to the main patent. With larger engine powers and speeds, a lot of heat is now generated by brush friction and current transition, which is why it is useful to BEZW the slip rings. to cool the slip ring capsule.
According to the present innovation, a fan coupled to the motor drives cooling air past the walls of the slip ring capsule, which are sealed against the weather.
For example, the device can be carried out according to the drawing. Here, a denotes the motor shaft, b the slip rings, c the inner shell of the capsule screwed to the end shield h, d the outer shell licked with hinge g. This is now penetrated by the bearing pin n, which is verbun within the shells c d with the shaft a through a clutch o and outside the fan wheel p carries. The outside of the fan is covered by a protective and guide wall q, in which the central opening r is for the entrance and the edge openings s for the exit of the air are. The shell d has ribs t as heat exchange organs, on which the cooling air sweeps past.
To accelerate the heat dissipation, the inside of the shell d can also be provided with cooling ribs u and another fan wheel v can be attached inside the shells to the shaft a, which draws the heated air from the slip rings to the cooled outer shell.
The coupling o is designed so that it is released when the outer capsule part k is opened and easily engages when the capsule is closed. According to the drawing, the shaft end is provided with two driving pins, which can be covered with a dampening cover such as rubber or leather, while there are four holes on the inside face of the pin, in each of which the pins engage.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH92502T | 1921-01-20 | ||
CH95945T | 1921-01-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH95945A true CH95945A (en) | 1922-09-01 |
Family
ID=25704512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH95945D CH95945A (en) | 1921-01-20 | 1921-01-25 | Slip ring capsule for firedamp proof induction motors. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH95945A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1186546B (en) * | 1957-12-27 | 1965-02-04 | Westinghouse Electric Corp | Cooling device for electrical machines |
EP0660493A1 (en) * | 1993-12-21 | 1995-06-28 | Siemens Aktiengesellschaft | Double cover for an electric machine |
EP3291423A1 (en) * | 2016-08-29 | 2018-03-07 | Siemens Aktiengesellschaft | Slip ring assembly |
-
1921
- 1921-01-25 CH CH95945D patent/CH95945A/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1186546B (en) * | 1957-12-27 | 1965-02-04 | Westinghouse Electric Corp | Cooling device for electrical machines |
EP0660493A1 (en) * | 1993-12-21 | 1995-06-28 | Siemens Aktiengesellschaft | Double cover for an electric machine |
ES2078169A2 (en) * | 1993-12-21 | 1995-12-01 | Siemens Ag | Double cover for an electric machine. |
EP3291423A1 (en) * | 2016-08-29 | 2018-03-07 | Siemens Aktiengesellschaft | Slip ring assembly |
WO2018041617A1 (en) * | 2016-08-29 | 2018-03-08 | Siemens Aktiengesellschaft | Slip-ring arrangement |
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