DE1803685A1 - Electric machine - Google Patents
Electric machineInfo
- Publication number
- DE1803685A1 DE1803685A1 DE19681803685 DE1803685A DE1803685A1 DE 1803685 A1 DE1803685 A1 DE 1803685A1 DE 19681803685 DE19681803685 DE 19681803685 DE 1803685 A DE1803685 A DE 1803685A DE 1803685 A1 DE1803685 A1 DE 1803685A1
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- coolant
- openings
- machine
- electrical machine
- 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.)
- Pending
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
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Elektrische Maschine Die Erfindung bezieht sich auf eine elektrische Maschine mit Frischluftkuhlung, insbesondere auf Asynchronmotoren. Electrical machine The invention relates to an electrical machine Machine with fresh air cooling, especially on asynchronous motors.
Die neuzeitliche Entwicklung der elektrischen Maschinen beruht zum grossen Teil auf der Vergrösserung der elektromagnetischen Belastungen sowie der aktiven Eisenlänge der Maschinen bei gleichzeitiger Verminderung des Rotor" durchmessers. Dies hat zur Folge, dass die bekannten Kühlanordnungen , insbesondere die einkanäligen, nicht mehr ausreichen. Das gilt vor allem wegen der Notwendigkeit einer gesteigerten Kühlung, die einen übermässigen Energieverbrauch des Lüfters bei gleichzeitigem wesentlichem Anstieg des Lüfter-Geräuschpegels und eine Vergrösserung des Ungleichmässigkeitsgrades der Temperatur verteilungskurve im Längsdurchschnitt der Maschine zur Folge hat.The modern development of electrical machines is based on large part of the increase in electromagnetic loads as well as the active iron length of the machines with simultaneous reduction of the rotor "diameter. This has the consequence that the known cooling arrangements , especially the single-channel ones, are no longer sufficient. This is especially true because of the need for increased cooling, the excessive energy consumption of the fan with a simultaneous significant increase in the fan noise level and an increase in the degree of unevenness of the temperature distribution curve in the longitudinal cross-section of the machine.
da Die letztere Erscheinung ist besonders schädlic%\für den Alterungsgrad der Isolation einer Maschine die Temperatur des heissesten Punktes massgebend ist, und nicht die Mitteltemperatur, die nur eine vereinbarte Messgrösse darstellt. The latter phenomenon is particularly detrimental to the degree of aging the insulation of a machine depends on the temperature of the hottest point, and not the mean temperature, which is only an agreed measured variable.
Die Erfindung beseitigt die dargelegten Mängel in wesentlichem Masse durch Schaffung einer Kühlanordnung mit mehreren Strömungswegen.The invention overcomes the deficiencies outlined to a substantial degree by providing a cooling arrangement with multiple flow paths.
Durch die Anwendung einer Kuhlung mit mehreren Strömung wegen ist es möglich, den gesamten aerodynamischen Widerstand der Maschine herabzusetzen und somit die Menge des Kühlmittels, ohne Ubermässige Erhöhung der Lüfterleistung zu vergrössern. Auch wird durch Zuführung des kalten Kilhlmittels durch Öffnungen im Gehäuse sowie gegensinnige Strömung des Kühlmittels im Rotor eine bessere auseeglichene Temperaturverteilung erhalten.By applying a cooling with multiple flow paths is it is possible to minimize the overall aerodynamic drag of the machine and thus the amount of coolant, without excessive increase in fan power to enlarge. Also, by supplying the cold coolant through openings in the Housing and opposing flow of coolant in the rotor are better balanced Obtained temperature distribution.
Bildet man die Oberflächen der Rotorkanäle zahnartig aus, so wird ihre Wärmeabgabe vergrössert und dadurch ihre Erwärmung herabgesetzt.If the surfaces of the rotor ducts are formed like teeth, then their heat dissipation increases and thus their heating is reduced.
Zur Erleichterung der Montage der Maschine sind zumindest einer oder auch beide Lüfter zerlegbar.To facilitate the assembly of the machine, at least one or Both fans can also be dismantled.
In Figur 1 ist im Längsschnitt und in Figur 2 in Halbansicht und Halbquerschnitt ein Ausführungsbeispiel der Erfindung dargestellt.In Figure 1 is in longitudinal section and in Figure 2 in half view and half cross section illustrated an embodiment of the invention.
Im vorliegenden Beispiel wird der Stator 1 durch zwei Strömungszweige 2 und 3 des Kühlmittels gekühlt und der Rotor 4 durch zwei gesonderte Strömungszweige 5 und 6, die die Kühlkanäle 7 gegenläufig durchströmen. Der Lüfter 8 saugt die Strömungszweige 3 und 5 des Kühlmittels, der Lüfter 9 dagegen die Strömungszweige 2 und 6 des Kühlmittels. Dadurch wird der Stator mit einem kalten erhebliche Torbulenz aufweisenden Kühlmittel gekühlt. Die Rotorkanäle 7, in welche das Kühlmittel durch Öffnungen in den Lagerschilden 13 eintritt und welche es wieder durch die mit Abschirmungen 14 versehenen Austrittöffnungen 10 und 11 verlässt, haben eine zahnartig ausgey bildete Oberfläche 12.In the present example, the stator 1 is made up of two flow branches 2 and 3 of the coolant and the rotor 4 cooled by two separate flow branches 5 and 6, which flow through the cooling channels 7 in opposite directions. The fan 8 sucks the flow branches 3 and 5 of the coolant, the fan 9, however, the flow branches 2 and 6 of the coolant. This provides the stator with a cold coolant which has significant torbulence chilled. The rotor channels 7, in which the coolant through openings in the end shields 13 occurs and which one it again through the shields 14 provided outlet openings 10 and 11, have a tooth-like configuration Surface 12.
Aus obigem geht hervor, dass die Kühlanordnung mit mehreren Strömungswegen nach der Erfindung es erlaubt, elektrische Maschinen, in welchen die Rotorverluste eine erhebliche Rolle spielen, mit einer bedeutenden Wärmeausbeute zu bauen.From the above it can be seen that the cooling arrangement with multiple flow paths according to the invention it allows electrical machines in which the rotor losses play a significant role in building with a significant heat output.
PatentansprücheClaims
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL123121A PL58804B1 (en) | 1967-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1803685A1 true DE1803685A1 (en) | 1969-05-14 |
Family
ID=19949762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19681803685 Pending DE1803685A1 (en) | 1967-10-20 | 1968-10-17 | Electric machine |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT294967B (en) |
CS (1) | CS150611B2 (en) |
DE (1) | DE1803685A1 (en) |
SE (1) | SE366880B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1275740B (en) * | 1963-02-11 | 1968-08-22 | Frank Sche Eisenwerke Ag | Device for the supply of combustion air and discharge of the combustion gases for gas-fired heaters, especially space heaters |
DE3332298A1 (en) * | 1983-09-07 | 1985-03-21 | Philipp Kreis GmbH & Co Truma-Gerätebau, 8000 München | EXTERNAL WALL BOX FOR THE COMBUSTION AIR AND EXHAUST CHANNEL OF A DEVICE WORKING WITH A BURNER SYSTEM |
DE19905540A1 (en) * | 1999-02-10 | 2000-08-17 | Zahnradfabrik Friedrichshafen | Electrical machine |
DE19905538A1 (en) * | 1999-02-10 | 2000-08-17 | Zahnradfabrik Friedrichshafen | Electrical machine |
FR2930381A1 (en) * | 2008-04-18 | 2009-10-23 | Leroy Somer Moteurs | ELECTRIC MACHINE WITH DOUBLE VENTILATION SEPARATE |
WO2021023985A1 (en) * | 2019-08-05 | 2021-02-11 | Cummins Generator Technologies Limited | Fan for an electrical generator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8912578U1 (en) * | 1989-10-24 | 1991-02-21 | D.I.E.N.E.S Apparatebau GmbH, 6052 Mühlheim | Cooling device for electric motors |
-
1968
- 1968-10-16 AT AT1011368A patent/AT294967B/en not_active IP Right Cessation
- 1968-10-17 DE DE19681803685 patent/DE1803685A1/en active Pending
- 1968-10-18 SE SE1414268A patent/SE366880B/xx unknown
- 1968-10-21 CS CS722968A patent/CS150611B2/cs unknown
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1275740B (en) * | 1963-02-11 | 1968-08-22 | Frank Sche Eisenwerke Ag | Device for the supply of combustion air and discharge of the combustion gases for gas-fired heaters, especially space heaters |
DE3332298A1 (en) * | 1983-09-07 | 1985-03-21 | Philipp Kreis GmbH & Co Truma-Gerätebau, 8000 München | EXTERNAL WALL BOX FOR THE COMBUSTION AIR AND EXHAUST CHANNEL OF A DEVICE WORKING WITH A BURNER SYSTEM |
DE19905540A1 (en) * | 1999-02-10 | 2000-08-17 | Zahnradfabrik Friedrichshafen | Electrical machine |
DE19905538A1 (en) * | 1999-02-10 | 2000-08-17 | Zahnradfabrik Friedrichshafen | Electrical machine |
FR2930381A1 (en) * | 2008-04-18 | 2009-10-23 | Leroy Somer Moteurs | ELECTRIC MACHINE WITH DOUBLE VENTILATION SEPARATE |
WO2009138636A1 (en) * | 2008-04-18 | 2009-11-19 | Moteurs Leroy-Somer | Electric machine with separate double ventilation |
CN102007668A (en) * | 2008-04-18 | 2011-04-06 | 利莱森玛发电机有限公司 | Electric machine with separate double ventilation |
CN102007668B (en) * | 2008-04-18 | 2014-01-22 | 利莱森玛电机公司 | Electric machine with separate double ventilation |
WO2021023985A1 (en) * | 2019-08-05 | 2021-02-11 | Cummins Generator Technologies Limited | Fan for an electrical generator |
GB2599565A (en) * | 2019-08-05 | 2022-04-06 | Cummins Generator Technologies | Fan for an electrical generator |
Also Published As
Publication number | Publication date |
---|---|
SE366880B (en) | 1974-05-06 |
CS150611B2 (en) | 1973-09-04 |
AT294967B (en) | 1971-12-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1803685A1 (en) | Electric machine | |
DE2545304A1 (en) | REFRIGERATION MACHINE, COMPRESSOR OR DGL. WITH COOLED INDUCTION MOTOR | |
CH341557A (en) | Waveguide | |
EP3403317B1 (en) | Rotor and electrical machine | |
DE2438190C3 (en) | Direct gas-cooled rotor winding for a high-performance electrical machine, especially a high-speed synchronous machine | |
DE69020080T2 (en) | Rotating electrical machine and centrifugal blower for use in a rotating electrical machine. | |
DE820042C (en) | Air duct for electrical collector machines, especially AC collector rail motors with fan cooling | |
DE112020003830T5 (en) | AIR INTAKE FRAME FOR A ROTOR AND GENERATOR ROTOR | |
DE632854C (en) | Surface-cooled electrical machine | |
DE3007917A1 (en) | Electrical machine heat loss recovery system, e.g. for space heating - has finned separation wall between cooling and heat output circuits | |
CH268948A (en) | Axial turbo machine. | |
DE102019214677A1 (en) | Speed-controlled external blowers for temperature-controlled ventilation of turbo generators, phase shifters and rotating electrical machines for network stabilization | |
DE1121200B (en) | Self-ventilated rotor | |
CH178335A (en) | Electrical machine with radial ventilation ducts formed by spacer bars between the packages of the active sheets. | |
DE457156C (en) | Device for cooling enclosed, artificially ventilated electrical machines, in particular turbo generators | |
DE948714C (en) | Device for cooling the stator windings of high-voltage, high-performance turbo generators | |
DE560973C (en) | Eddy current runner | |
DE633759C (en) | Ventilation device for the runners of electric turbo generators | |
DE1291017B (en) | Arrangement for air or gas cooling of a rotor of an electrical machine, in particular a turbo generator | |
DE1046420B (en) | Magnetic particle clutch or brake | |
CH368861A (en) | Fan seated on the shaft of a small electric motor for guiding a flow of cooling air through the motor and method for its production | |
DE1488792C (en) | Cooling device for large transformers | |
CH395288A (en) | Self-ventilated rotor in an electrical machine | |
DE1746614U (en) | ELECTRIC MACHINE ENCLOSED DESIGN. | |
DE949755C (en) | Encapsulated electrical machine with cooling tubes and circulating internal cooling air flow |