DE426945C - Cooling device for electric motor-driven oil conveyor pumps for oil circulation cooling devices for electrical apparatus under OEl, in which a transmission gear is switched on between the motor and the pump shaft - Google Patents

Cooling device for electric motor-driven oil conveyor pumps for oil circulation cooling devices for electrical apparatus under OEl, in which a transmission gear is switched on between the motor and the pump shaft

Info

Publication number
DE426945C
DE426945C DEM83083D DEM0083083D DE426945C DE 426945 C DE426945 C DE 426945C DE M83083 D DEM83083 D DE M83083D DE M0083083 D DEM0083083 D DE M0083083D DE 426945 C DE426945 C DE 426945C
Authority
DE
Germany
Prior art keywords
motor
oil
transmission gear
pump shaft
switched
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
DEM83083D
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle 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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of DE426945C publication Critical patent/DE426945C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Rotary Pumps (AREA)

Description

Kühleinrichtung für elektromotorisch angetriebene Ölförderpumpen für Ölumlaufkühleinrichtungen elektrischer Apparate unter Öl, bei denen zwischen der IYdotor-und der Pumpenwelle ein Übersetzungsgetriebe eingeschaltet ist. Es isst bekannt, ölförderpumpen derart mit einem Elektromotor zusammenzubauen, daß einzelne Teile des Motors mindestens durch einen Teil des zu befördernden öls bespült werden. Nun gibt es Fälle, wo der Motor nur mit kleiner Drehzahl laufen kann oder wo eine hohe manometrische Förderhöhe bei kleiner Fördermenge gewünscht wird. Für diese Fälle wird zweckmäßig -zwischen der Motor-und der Pumpenwelle ein Übersetzungsgetriebe eingeschaltet. Erfindungsgemäß wird hierfür die Anordnung so getroffen, daß die durch den Motor hierdurch beförderte Kühlölmenge zum Übersetzungsgetriebe und durch die hohle Pumpenwelle zurück in die Saugleitung der ölförderpumpe gepumpt wird.Cooling device for electric motor driven oil pumps for Oil circulation cooling equipment for electrical apparatus under oil, in which between the IYdotor and the pump shaft a transmission gear is switched on. It eats known to assemble oil pumps in such a way with an electric motor that individual Parts of the engine are flushed with at least part of the oil to be conveyed. Now there are cases where the engine can only run at low speed or where one high manometric delivery head with a small delivery rate is required. For this In some cases, it is advisable to use a transmission gear between the motor and the pump shaft switched on. According to the invention, the arrangement is made so that the by the engine the amount of cooling oil conveyed as a result to the transmission gear and through the hollow pump shaft is pumped back into the suction line of the oil feed pump.

Die Zeichnung zeigt ein Ausführungsbeispiel des Erfindungsgegenstandes. Der Elektromotor i wirkt auf ein Übersetzungsgetriebe 22, welches die ölförderpumpe 2 treibt. Für die Schmierung des Lagers 23 des Übersetzungsgetriebes genügt das öl, welches durch den Spalt io der Pumpe 2 verlorengeht. Dieses öl gelangt vom Spalt io durch das Lager 23 und über das Übersetzungsgetriebe 22 vor das in das Motorgehäuse ragende Ende der hohlen Pumpenw=elle 24 und durch letztere hindurch in die Saugleitung 25 der Pumpe. Für die Kühlung des Motors wird Drucköl vom Pumpengehäuse 26 durch die hohle Motorwelle 3 hindurch in das Motorgehäuse geführt, wo das Öl über die Wicklungskörper 12 und durch den Luftspalt 27 ebenfalls vor das innere Ende der Hohlwelle 24. und durch diese hindurch in den Saugraum 25 gelangt. Ein Teil des Drucköls aus dem Pumpengehäuse 26 gelangt unmittelbar durch das der Welle 3 und dem Getriebe 22 gemeinsame Lager hindurch in das Motorgehäuse, mit dem übrigen in das Motorgehäuse gepumpten öl das Getriebe 22 kühlend.The drawing shows an embodiment of the subject matter of the invention. The electric motor i acts on a transmission gear 22 which controls the oil feed pump 2 drives. This is sufficient for the lubrication of the bearing 23 of the transmission gear oil which is lost through the gap in the pump 2. This oil comes from the gap io through the bearing 23 and via the transmission gear 22 in front of the in the motor housing protruding end of the hollow pump shaft 24 and through the latter into the suction line 25 of the pump. To cool the motor, pressure oil is passed through from the pump housing 26 the hollow motor shaft 3 passed through into the motor housing, where the oil over the Winding body 12 and through the air gap 27 also in front of the inner end of the Hollow shaft 24 and passes through it into the suction chamber 25. Part of the Pressurized oil from the pump housing 26 passes directly through that of the shaft 3 and the transmission 22 common bearings through into the motor housing, with the rest of the in the motor housing pumped oil cooling the transmission 22.

Es könnten vom Getriebe 22 aus auch zwei oder mehrere Pumpenrädchen angetrieben und dabei die Diffuseren neben-oder hintereinander angeordnet sein. Es können auch beidseitig der Motorwelle 3 Lbersetzungsgetriebe vorgesehen sein für den Antrieb mehrerer Pumpen. An Stelle einstufiger Pumpen sind auch mehrstufige Pumpen verwendbar.There could also be two or more pump wheels from the transmission 22 driven and the diffusers arranged next to or behind one another. Transmission gears can also be provided on both sides of the motor shaft 3 for driving several pumps. Instead of single-stage pumps, there are also multi-stage pumps Pumps can be used.

Claims (1)

PATENTANSPRUCH: Kühleinrichtung für elektromotorisch angetriebene ölförderpumpen für ölumlaufkühleinrichtungen elektrischer Apparate unter Öl, bei denen zwischen der Motor-und der Pumpenwelle ein übersetzungsgetriebe eingeschaltet ist, dadurch gekennzeichnet, daß die durch den Motor hindurch beförderte Kühlölmenge zum übersetrungsgetriebe (22) und durch die hohle Pumpenwelle (2¢) zurück in die Saugleitung der ölförderpumpe gepumpt wird. PATENT CLAIM: Cooling device for electric motor-driven oil feed pumps for oil circulation cooling devices for electrical apparatus under oil, in which a transmission gear is switched on between the motor and pump shaft, characterized in that the amount of cooling oil conveyed through the motor to the transmission gear (22) and through the hollow pump shaft ( 2 ¢) is pumped back into the suction line of the oil feed pump.
DEM83083D 1923-10-25 1923-11-17 Cooling device for electric motor-driven oil conveyor pumps for oil circulation cooling devices for electrical apparatus under OEl, in which a transmission gear is switched on between the motor and the pump shaft Expired DE426945C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH426945X 1923-10-25

Publications (1)

Publication Number Publication Date
DE426945C true DE426945C (en) 1926-03-20

Family

ID=4514848

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM83083D Expired DE426945C (en) 1923-10-25 1923-11-17 Cooling device for electric motor-driven oil conveyor pumps for oil circulation cooling devices for electrical apparatus under OEl, in which a transmission gear is switched on between the motor and the pump shaft

Country Status (1)

Country Link
DE (1) DE426945C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025437A1 (en) * 2006-08-26 2008-03-06 Wilo Ag Motor centrifugal pump having coolant pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025437A1 (en) * 2006-08-26 2008-03-06 Wilo Ag Motor centrifugal pump having coolant pump
US8226385B2 (en) 2006-08-26 2012-07-24 Wilo Ag Motor centrifugal pump having coolant pump

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