CH200794A - AC motor with a gas-tight rotor sealed from the rest of the motor interior, especially for driving refrigeration machines - Google Patents
AC motor with a gas-tight rotor sealed from the rest of the motor interior, especially for driving refrigeration machinesInfo
- Publication number
- CH200794A CH200794A CH200794DA CH200794A CH 200794 A CH200794 A CH 200794A CH 200794D A CH200794D A CH 200794DA CH 200794 A CH200794 A CH 200794A
- Authority
- CH
- Switzerland
- Prior art keywords
- motor
- gas
- rest
- fan
- refrigeration machines
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Wechselstrom-Motor mit gasdicht gegen den übrigen Motorinnenraum abgeschlossenem Rotor, insbesondere zum Antrieb von Kältemaschinen. Zum Antrieb von kleinen Kältekompres soren werden meistens Elektromotoren ver wendet, die mit der Kompressorenwelle un mittelbar gekuppelt sind oder .dieselbe mit tels Riemens antreiben. Diese Anordnung hat den Nachteil, dass der Kompressor eine Stopfbüchsendichtung besitzen muss.
Es sind auch Anordnungen bekannt geworden, bei denen die Stopfbüchse umgangen wird, in- .dem der Rotor des Elektromotors in einer geschlossenen Büchse aus elektrisch und magnetisch schlecht leitendem Material läuft. Dadurch, dass dann die Rotorwelle nicht mehr zur Aufnahme eines Ventilators dienen kann, muss der Elektromotor seine Wärme natürlich .abführen; oder es muss das Motor gehäuse mit Wasser künstlich gekühlt wer den.
Beide Anordnungen bedingen grosse und teure Motoren. Ausserdem haben diese An ordnungen noch den Nachteil, dass die aus organischen Stoffen hergestellte Wicklungs- isolation wegen Fehlens einer Durchlüftung zu Schimmelbildung neigt und verfault. Er- findungsgemäss wird zur Erhöhung der natürlichen; Kühlwirkung ein Ventilator ver wendet, der vom Streufeld der Statorspulen köpfe angetrieben wird.
Die beiliegende Zeichnung zeigt zwei Ausführungsbeispiele des Erfindungsgegen standes, und zwar je im Schnitt. Der Rotor 1 des Wechselstrommotors ist von einer Hülse 2 gasdicht umgeben und treibt den nicht .ge zeichneten Kompressor an. Auf einem am Motorgehäuse 4 befestigten Zapfen 3 sitzt ein Ventilator 5 (Fig. 2 zeigt die Draufsicht desselben). Der Ventilator trägt einen Ring, .der auf der Seite 6 der Wickelköpfe aus Kupfer und auf der andern Seite 7 aus Eisen besteht.
Der Ventilator liegt so zu den Statarspulenköpfen 8, dass er vom Streu feld dieser Spulenköpfe angetrieben wird und dabei Luft .durch Aussparungen 9 -des Statorblechkörpers 10 oder allenfalls zwi schen dem Blechkörper 10 und dem Ge häuse 4 hindurch in. der angegebenen Pfeil richtung ansaugt bezw. ausbläst, Der Ventilator 5 kann irgendwelche zweckdienliche,
zum Beispiel auch die im Ausführungsbeispiel Fig. 3 gezeigte Form haben.
AC motor with a gas-tight rotor sealed from the rest of the motor interior, especially for driving refrigeration machines To drive small refrigeration compressors, mostly electric motors are used which are directly coupled to the compressor shaft or which drive the same by means of a belt. This arrangement has the disadvantage that the compressor must have a stuffing box seal.
Arrangements have also become known in which the stuffing box is bypassed, in .dem the rotor of the electric motor runs in a closed box made of electrically and magnetically poorly conductive material. Because the rotor shaft can then no longer serve to accommodate a fan, the electric motor must of course. Dissipate its heat; or the motor housing must be artificially cooled with water.
Both arrangements require large and expensive motors. In addition, these arrangements have the disadvantage that the winding insulation made from organic materials tends to form mold and rot due to the lack of ventilation. According to the invention, to increase the natural; Cooling effect uses a fan that is driven by the stray field of the stator coil heads.
The accompanying drawing shows two embodiments of the subject matter of the invention, each in section. The rotor 1 of the AC motor is surrounded gas-tight by a sleeve 2 and drives the not .ge recorded compressor. A fan 5 is seated on a pin 3 fastened to the motor housing 4 (FIG. 2 shows the top view of the same). The fan has a ring, which is made of copper on side 6 of the winding heads and iron on the other side 7.
The fan is positioned in relation to the stator coil heads 8 in such a way that it is driven by the stray field of these coil heads and thereby sucks in air through the recesses 9 of the stator laminated body 10 or at most between the laminated body 10 and the housing 4 in the direction of the arrow indicated . blows out, the fan 5 can be used for any
for example also have the shape shown in the exemplary embodiment in FIG.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH200794T | 1937-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH200794A true CH200794A (en) | 1938-10-31 |
Family
ID=4442493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH200794D CH200794A (en) | 1937-08-10 | 1937-08-10 | AC motor with a gas-tight rotor sealed from the rest of the motor interior, especially for driving refrigeration machines |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH200794A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1036648B (en) * | 1955-06-15 | 1958-08-14 | Klaus Maschinen U Appbau F | Centrifugal pump without a stuffing box |
DE1081966B (en) * | 1956-06-30 | 1960-05-19 | Albert Spoerel Fa | Cooled slip motor |
DE3313768A1 (en) * | 1983-04-15 | 1984-10-18 | Elektromotoren Savod "ELPROM", Trojan | Asynchronous electric motor having a rotation frequency which can be regulated |
EP1748536A1 (en) * | 2005-07-30 | 2007-01-31 | ThyssenKrupp Aufzugswerke GmbH | Electric motor |
EP2256907A1 (en) * | 2009-05-18 | 2010-12-01 | Bombardier Transportation GmbH | An electric machine |
DE102021107981A1 (en) | 2021-03-30 | 2022-10-06 | Schaeffler Technologies AG & Co. KG | Electric machine with integrated impeller |
-
1937
- 1937-08-10 CH CH200794D patent/CH200794A/en unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1036648B (en) * | 1955-06-15 | 1958-08-14 | Klaus Maschinen U Appbau F | Centrifugal pump without a stuffing box |
DE1081966B (en) * | 1956-06-30 | 1960-05-19 | Albert Spoerel Fa | Cooled slip motor |
DE3313768A1 (en) * | 1983-04-15 | 1984-10-18 | Elektromotoren Savod "ELPROM", Trojan | Asynchronous electric motor having a rotation frequency which can be regulated |
EP1748536A1 (en) * | 2005-07-30 | 2007-01-31 | ThyssenKrupp Aufzugswerke GmbH | Electric motor |
EP2256907A1 (en) * | 2009-05-18 | 2010-12-01 | Bombardier Transportation GmbH | An electric machine |
DE102021107981A1 (en) | 2021-03-30 | 2022-10-06 | Schaeffler Technologies AG & Co. KG | Electric machine with integrated impeller |
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