DE1067518B - Power tool with universal motor and with a fan arranged between the commutator and the armature iron - Google Patents
Power tool with universal motor and with a fan arranged between the commutator and the armature ironInfo
- Publication number
- DE1067518B DE1067518B DEL20451A DEL0020451A DE1067518B DE 1067518 B DE1067518 B DE 1067518B DE L20451 A DEL20451 A DE L20451A DE L0020451 A DEL0020451 A DE L0020451A DE 1067518 B DE1067518 B DE 1067518B
- Authority
- DE
- Germany
- Prior art keywords
- commutator
- power tool
- fan
- tool according
- universal motor
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 10
- 229910052742 iron Inorganic materials 0.000 title claims description 5
- 238000004804 winding Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
-
- 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)
- Dc Machiner (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Elektrowerkzeug mit Universalmotor und mit zwischen Kommutator und Ankereisen angeordnetem Lüfter Gegenstand des Hauptpatents 1047 298 ist ein Elektrowerkzeug mit Universalmotor und mit zwischen Kommutator und Ankereisen über dem Wicklungskopf angeordnetem Lüfter, durch den die Kühlluft sowahl antriebsseitig als auch kommutatorseitig angesaugt wird. Um den zwischen Kommutator und Ankereisen liegenden Teil der Wicklung ist ein aerodynamisch derart geformter Mantel herumgelegt, daß die zwei Ansaugluftwege voneinander getrennt sind und der unmittelbar über den Kommutator und die Bürsten geführte Kühlluftstrom, ohne mit dem Wickelkopf in Berührung zu kommen, aus dem Maschinengehäuse abgeblasen wird. Der vom Kühlluftstrom mitgeführte Kommutator- und Bürstenabrieb kommt demzufolge mit Wicklungsteilen nicht in Berührung.Power tool with universal motor and with a fan arranged between the commutator and armature iron The subject of the main patent 1 047 298 is an electric tool with a universal motor and with a fan arranged between the commutator and armature iron above the winding head, through which the cooling air is sucked in on both the drive side and the commutator side. An aerodynamically shaped jacket is wrapped around the part of the winding between the commutator and the armature iron, so that the two intake air paths are separated from each other and the cooling air flow, which is passed directly over the commutator and the brushes, is blown out of the machine housing without coming into contact with the end winding will. The commutator and brush abrasion carried along by the cooling air flow therefore does not come into contact with winding parts.
Die Befestigung des Lüfters auf dem Wickelkopf erfolgt dabei unter Verwendung eines Gießharzes, das in den Zwischenraum zwischen Wicklung und Lüfternabe, die zugleich als Wicklungsabstützung dient, so daß man auf eine Schnurbandage verzichten kann, eingegossen wird.The fan is attached to the winding head under Use of a casting resin, which is applied in the space between the winding and the fan hub, which also serves as a winding support, so that you can do without a cord bandage can, is poured.
Um die Abführung der Verlustwärme bei einem derartigen Elektrowerkzeug weiter zu steigern, wird erfindungsgemäß vorgeschlagen, den Lüfter aus gut wärmeleitendem Material herzustellen und wärmeschlüssig, aber elektrisch isoliert unmittelbar auf dem Kommutator anzuordnen. Auf diese Weise ist es möglich, besonders den Kommutator, der mit zu den thermisch höchst beanspruchten Teilen einer elektrischen Maschine gehört, gut zu kühlen und damit die Bürsten-und Kommutatorstandzeit wesentlich zu verlängern.About the dissipation of the heat loss in such a power tool To increase it further, it is proposed according to the invention that the fan be made of a good heat conductor Manufacture material and thermally bonded, but electrically insulated immediately to arrange the commutator. In this way it is possible, especially the commutator, the one with the most thermally stressed parts of an electrical machine belongs to good cooling and thus the brush and commutator service life is essential extend.
Die isolierte Anordnung eines Lüfters auf dem Kommutator einer elektrischen Maschine ist zwar grundsätzlich bekannt, doch wurde bisher die Befestigung nicht wärmeschlüssig durchgeführt. Es ist ferner auch bekannt, die Kommutatorsegmente selbst als Lüfterflügel auszubilden, doch ist es dabei nicht möglich, zwei voneinander getrennte Luftansaugwege herzustellen und den Bürsten- und Kommutatorabrieb von der Wicklung fernzuhalten.The isolated arrangement of a fan on the commutator of an electrical Although the machine is known in principle, the attachment has not yet been made carried out thermally. It is also known, the commutator segments even train as a fan blade, but it is not possible to use two of each other establish separate air intake paths and reduce brush and commutator wear from away from the winding.
Der Kollektor wird bei der Erfindung zweckmäßigerweise in axialer Richtung um ein der Nabenbreite des Lüfters entsprechendes Stück verlängert, so daß nach wie vor dieselbe wirksame Kollektoroberfläche zur Verfügung steht. Ferner können zur Einhaltung auch derselben Gesamtbaulänge des Ankers die Ankerzuführungsdrähte zum Kollektor um einen der Verlängerung des Kollektors entsprechenden Betrag hin verkürzt sein. Die Lüfternabe kann auf den sorgfältig bearbeiteten Kollektor aufgepreßt und zwecks guter elektrischer Isolation gegenüber dem Kommutator aus wärmeleitendem Isolierstoff gebildet sein und einen ebenfalls aus wärmeleitendem Isolierstoff bestehenden Lüfterkranz besitzen. Es ist auch möglich, den Lüfter aus Metall herzustellen und diesen mittels einer wärmeleitenden Isolierstoffnabe auf dem Kommutator zu befestigen. Als wärmeleitender Isolierstoff kann beispielsweise ein Gießharz mit Quarzkomponente Anwendung finden.The collector is expediently in the axial direction in the invention Direction extended by a piece corresponding to the hub width of the fan, see above that the same effective collector surface is still available. Further the anchor supply wires can also be used to maintain the same overall length of the anchor towards the collector by an amount corresponding to the extension of the collector be shortened. The fan hub can be pressed onto the carefully machined collector and for the purpose of good electrical insulation from the commutator made of thermally conductive Be formed insulating material and also made of thermally conductive insulating material Own fan ring. It is also possible to make the fan out of metal and to attach this to the commutator by means of a thermally conductive insulating hub. A cast resin with a quartz component, for example, can be used as a heat-conducting insulating material Find application.
Die Auswuchtung kann in der bekannten Weise vor genommen werden.The balancing can be done in the known manner.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch veranschaulicht.An embodiment of the invention is shown schematically in the drawing illustrated.
Gemäß der Figur besitzt der Anker 10 des Elektrowerkzeuges einen Wickelkopf 11 und einen um den Betrag der Lüfternabenbreite verlängerten Kommutator 12. Die Nabe 13 sowie der Kranz 14 des auf dem Kommutator angeordneten Lüfters 15 bestehen aus Isolierstoff, und der Lüfter ist wieder so ausgebildet, daß Kühlluft sowohl antriebsseitig als auch kommutatorseitig angesaugt wird. Die Ankerwelle 16 ist in bekannter Weise beidseitig in handelsüblichen Wälzlage 17, 18 gelagert, wobei dem Lager 17 eine Fettfangscheibe 20 vorgeordnet und das Lager 18 durch eine Scheibe 19 abgedeckt ist. Mit 21 ist das Ankerritzel bezeichnet.According to the figure, the armature 10 of the power tool has an end winding 11 and a commutator 12 lengthened by the amount of the fan hub width Hub 13 and the ring 14 of the fan 15 arranged on the commutator exist made of insulating material, and the fan is again designed so that cooling air both is sucked in on the drive side as well as on the commutator side. The armature shaft 16 is in known manner on both sides in commercially available roller bearings 17, 18, with the Bearing 17 upstream of a grease trap disk 20 and the bearing 18 by a disk 19 is covered. With 21 the anchor pinion is designated.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL20451A DE1067518B (en) | 1954-11-22 | 1954-11-22 | Power tool with universal motor and with a fan arranged between the commutator and the armature iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL20451A DE1067518B (en) | 1954-11-22 | 1954-11-22 | Power tool with universal motor and with a fan arranged between the commutator and the armature iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1067518B true DE1067518B (en) | 1959-10-22 |
Family
ID=7261742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEL20451A Pending DE1067518B (en) | 1954-11-22 | 1954-11-22 | Power tool with universal motor and with a fan arranged between the commutator and the armature iron |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1067518B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305568A1 (en) * | 1987-09-02 | 1989-03-08 | Louis Stanley | Rotary fans |
| US6927511B2 (en) | 2003-06-17 | 2005-08-09 | Black & Decker Inc. | Generator having dual path airflow cooling arrangement and method therefor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE199933C (en) * | ||||
| DE197032C (en) * | ||||
| US2460752A (en) * | 1947-09-09 | 1949-02-01 | Gen Electric | Dynamoelectric machine |
| US2541235A (en) * | 1949-07-23 | 1951-02-13 | Brown Brockmeyer Company | Fan arrangement for electrical devices |
| DE839968C (en) * | 1949-10-04 | 1952-05-26 | Lorenz C Ag | Balancing device for electrical machines |
-
1954
- 1954-11-22 DE DEL20451A patent/DE1067518B/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE199933C (en) * | ||||
| DE197032C (en) * | ||||
| US2460752A (en) * | 1947-09-09 | 1949-02-01 | Gen Electric | Dynamoelectric machine |
| US2541235A (en) * | 1949-07-23 | 1951-02-13 | Brown Brockmeyer Company | Fan arrangement for electrical devices |
| DE839968C (en) * | 1949-10-04 | 1952-05-26 | Lorenz C Ag | Balancing device for electrical machines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305568A1 (en) * | 1987-09-02 | 1989-03-08 | Louis Stanley | Rotary fans |
| US6927511B2 (en) | 2003-06-17 | 2005-08-09 | Black & Decker Inc. | Generator having dual path airflow cooling arrangement and method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1067518B (en) | Power tool with universal motor and with a fan arranged between the commutator and the armature iron | |
| CH451307A (en) | Turbo generator rotor | |
| DE864900C (en) | Electrical apparatus, in particular electrical machines, with embedded coils | |
| DE720551C (en) | Waterproof enclosed electrical machine | |
| DE696879C (en) | Electrical machine, in the runner of which a strong heat is developed | |
| DE1047298B (en) | Power tool with universal motor and built-in fan | |
| DE885114C (en) | Electric squirrel cage machine | |
| DE1001394B (en) | Combined liquid and air cooling for dynamo-electric machines | |
| DE671468C (en) | Asynchronous starting synchronous machine | |
| DE358226C (en) | Slip ring arrangement for electrical machines | |
| DE935620C (en) | Closed-type electrical machine with cooling device | |
| DE573878C (en) | Device for cooling closed electrical machines by one or more fans driven by a small auxiliary motor, the air flow of which brushes the surface of the machine housing | |
| DE849578C (en) | Brush holders for electrical machines | |
| DE445643C (en) | Movable electric vacuum cleaner | |
| DE597528C (en) | Method for isolating the groove walls of induction motors with cast conductor bars | |
| DE597457C (en) | Electric machine with a laminated core provided with closed grooves for runner and stand and in particular with an encapsulated winding | |
| CH392681A (en) | Squirrel cage motor | |
| AT217556B (en) | Method for manufacturing the external rotor of an induction machine | |
| DE885750C (en) | Electric machine, especially small motor | |
| DE1963372C3 (en) | Plain bearing for an electric motor of large axial length for driving deep-borehole pumps | |
| DE925302C (en) | Roller table motor | |
| DE723355C (en) | Fully enclosed electrical machine | |
| DE453100C (en) | Electric heating device for water-cooled internal combustion engines | |
| DE860877C (en) | Electrically heated area, especially blades for turbo machines | |
| DE824233C (en) | Small or micro electric motor with commutator |