EP1085215B1 - Electric motor driven air pump - Google Patents

Electric motor driven air pump Download PDF

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Publication number
EP1085215B1
EP1085215B1 EP00113757A EP00113757A EP1085215B1 EP 1085215 B1 EP1085215 B1 EP 1085215B1 EP 00113757 A EP00113757 A EP 00113757A EP 00113757 A EP00113757 A EP 00113757A EP 1085215 B1 EP1085215 B1 EP 1085215B1
Authority
EP
European Patent Office
Prior art keywords
hub
impeller
air pump
driven air
electric 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.)
Expired - Lifetime
Application number
EP00113757A
Other languages
German (de)
French (fr)
Other versions
EP1085215A2 (en
EP1085215A3 (en
Inventor
Frank Kemmerling
Ralf Kemmerling
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP1085215A2 publication Critical patent/EP1085215A2/en
Publication of EP1085215A3 publication Critical patent/EP1085215A3/en
Application granted granted Critical
Publication of EP1085215B1 publication Critical patent/EP1085215B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to an electrically driven air pump with a housing, in which an electric motor and a pump unit are arranged, wherein the pump work has at least one pump impeller, which is arranged with an impeller hub member on an electric motor shaft.
  • Such a pump is known for example from DE 196 11 512 A1.
  • the pump unit of this pump has one or more plastic injection molded impellers, with an impeller hub is molded directly onto the pump impeller.
  • the impeller or impellers are pushed onto the electric motor shaft and secured by a metal ring.
  • the production of such an electrically driven air pump is costly and labor intensive.
  • the present invention seeks to provide a cost-effective way an air pump, which has low operating noise and the impeller must not be balanced in a separate operation.
  • the impeller hub element consists of two hub parts which are connected by Kraftform gleich together such that the pump impeller is arranged in relation to the axis of rotation of the impeller hub element centered between the two hub parts.
  • FIG. 1 shows the inventive air pump 1.
  • a pump unit 3 and on the other hand an electric motor chamber 4 with an electric motor 5 is arranged.
  • the housing 2 is closed on the pump side by a cover 6, which has an intake 7.
  • the pump unit has in the present case two wheels 8 and 9, which are pressed with impeller hub elements 10, 11 on an electric motor shaft 12 of the electric motor 5.
  • the impeller hub elements 10, 11 abut against a shaft collar 13.
  • the impeller hub elements 10, 11 are additionally bonded to the electric motor shaft 12.
  • the impeller hub elements 10, 11 consist (see also FIG. 3) of hub parts 14, 16 or 15, 17.
  • the pump impeller 8 has a centering opening 18, through which a hub projection 19 (see FIG. 3) of the hub part 14 protrudes.
  • Annular openings 20 around the centering opening 18 are arranged in the present exemplary embodiment, in which, as shown in FIG. 3, driving projections 21 protrude to form the impeller 8 in the rotational direction in a form-fitting manner with the wheel hub element 10; 11 to connect.
  • Fig. 3 shows in detail the impeller 8 with the associated impeller hub member 10, which has the two hub parts 14 and 15.
  • the hub parts 14 and 15 are positively connected by a clip connection.
  • the hub member 15 has a plate-shaped flange 22 to ensure the bias of the clip connection.
  • latching arms 23 which protrude through the receiving openings 20 of the impeller 8 and through holes 24 of the cam projections 21, wherein the Mit Motheran accounts 21 as described above, the hub member 10 form fit in the direction of rotation with the impeller 8 connect.
  • the hub part 14 has the hub projection 19, which projects through the centering opening 18 of the impeller 8 and a centering opening 27 of the hub part 15 such that the impeller 8 is held centered by the impeller hub element 10 with respect to the electric motor shaft 12.
  • the hub member 14 on its side facing the electric motor shaft 12 inside longitudinal grooves 28 which are filled with adhesive to connect the electric motor shaft 12 with the impeller hub member 10 frictionally.
  • the sockets 14, 16 and 15, 17 are made of plastic.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine elektrisch angetriebene Luftpumpe mit einem Gehäuse, in dem ein Elektromotor und ein Pumpenwerk angeordnet sind, wobei das Pumpenwerk zumindest ein Pumpenlaufrad aufweist, das mit einem Laufradnabenelement auf einer Elektromotorwelle angeordnet ist.The invention relates to an electrically driven air pump with a housing, in which an electric motor and a pump unit are arranged, wherein the pump work has at least one pump impeller, which is arranged with an impeller hub member on an electric motor shaft.

Eine derartige Pumpe ist beispielsweise aus der DE 196 11 512 A1 bekannt. Das Pumpenwerk dieser Pumpe weist dabei ein oder mehrere aus Kunststoff gespritzte Pumpenlaufräder auf, wobei eine Laufradnabe direkt an das Pumpenlaufrad angespritzt ist. Das oder die Laufräder werden auf die Elektromotorwelle aufgeschoben und durch einen aus Metall bestehenden Abschlussring gesichert. Die Herstellung einer derartigen elektrisch angetriebenen Luftpumpe ist kosten- und arbeitsintensiv.Such a pump is known for example from DE 196 11 512 A1. The pump unit of this pump has one or more plastic injection molded impellers, with an impeller hub is molded directly onto the pump impeller. The impeller or impellers are pushed onto the electric motor shaft and secured by a metal ring. The production of such an electrically driven air pump is costly and labor intensive.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, auf kostengünstige Weise eine Luftpumpe zu schaffen, die geringe Laufgeräusche aufweist und deren Laufrad nicht in einem separaten Arbeitsgang ausgewuchtet werden muss.Proceeding from this, the present invention seeks to provide a cost-effective way an air pump, which has low operating noise and the impeller must not be balanced in a separate operation.

Diese Aufgabe wird bei der erfindungsgemässen Luftpumpe dadurch gelöst, dass das Laufradnabenelement aus zwei Nabenteilen besteht, die durch Kraftformschluss derart miteinander verbunden sind, dass das Pumpenlaufrad in Bezug auf die Drehachse des Laufradnabenelementes zentriert zwischen den beiden Nabenteilen angeordnet ist.This object is achieved in the inventive air pump, characterized in that the impeller hub element consists of two hub parts which are connected by Kraftformschluss together such that the pump impeller is arranged in relation to the axis of rotation of the impeller hub element centered between the two hub parts.

Auf diese Art und Weise wird eine einfache und kostengünstig herzustellende Pumpe bereitgestellt, die desweiteren aufgrund des Formschlusses nahezu frei von Unwuchten ist.In this way, a simple and inexpensive to manufacture pump is provided, which is furthermore due to the positive connection almost free of imbalances.

Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.Advantageous developments are specified by the subclaims.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird die Erfindung nachfolgend näher beschrieben.Reference to an embodiment shown in the drawing, the invention will be described in more detail below.

Es zeigt:

  • Fig. 1
    eine Luftpumpe in einem aufgebrochenen Längsschnitt,
  • Fig. 2
    die Vorderansicht eines Pumpenlaufrades, und
  • Fig. 3
    eine Ansicht des Laufradnabenelementes.
It shows:
  • Fig. 1
    an air pump in a broken longitudinal section,
  • Fig. 2
    the front view of a pump impeller, and
  • Fig. 3
    a view of the Laufradnabenelementes.

Fig. 1 zeigt die erfindungsgemässe Luftpumpe 1. In einem Gehäuse 2 ist einerseits ein Pumpenwerk 3 und andererseits eine Elektromotorkammer 4 mit einem Elektromotor 5 angeordnet. Das Gehäuse 2 ist auf der Pumpenseite von einem Deckel 6 verschlossen, der einen Ansaugstutzen 7 aufweist. Das Pumpenwerk weist im vorliegenden Fall zwei Laufräder 8 und 9 auf, die mit Laufradnabenelementen 10, 11 auf eine Elektromotorwelle 12 des Elektromotors 5 aufgepresst sind. In Aufpressrichtung liegen die Laufradnabenelemente 10, 11 gegen einen Wellenbund 13 an. Um ein Verschieben in Axialrichtung zu verhindern, sind die Laufradnabenelemente 10, 11 zusätzlich auf der Elektromotorwelle 12 verklebt. Die Laufradnabenelemente 10, 11 bestehen dabei (siehe auch Fig. 3) aus Nabenteilen 14, 16 bzw. 15, 17.1 shows the inventive air pump 1. In a housing 2 on the one hand a pump unit 3 and on the other hand an electric motor chamber 4 with an electric motor 5 is arranged. The housing 2 is closed on the pump side by a cover 6, which has an intake 7. The pump unit has in the present case two wheels 8 and 9, which are pressed with impeller hub elements 10, 11 on an electric motor shaft 12 of the electric motor 5. In Aufpressrichtung the impeller hub elements 10, 11 abut against a shaft collar 13. In order to prevent displacement in the axial direction, the impeller hub elements 10, 11 are additionally bonded to the electric motor shaft 12. The impeller hub elements 10, 11 consist (see also FIG. 3) of hub parts 14, 16 or 15, 17.

Fig. 2 zeigt die Vorderansicht des Pumpenlaufrades 8. Das Pumpenlaufrad 8 weist eine Zentrieröffnung 18 auf, durch die ein Nabenansatz 19 (siehe Fig. 3) des Nabenteils 14 ragt. Kreisringförmig um die Zentrieröffnung 18 sind im vorliegenden Ausführungsbeispiel Aufnahmeöffnungen 20 angeordnet, in die, wie in Figur 3 dargestellt, Mitnehmeransätze 21 hineinragen, um das Laufrad 8 in Drehrichtung formschlüssig mit dem Laufradnabenelement 10; 11 zu verbinden.2 shows the front view of the pump impeller 8. The pump impeller 8 has a centering opening 18, through which a hub projection 19 (see FIG. 3) of the hub part 14 protrudes. Annular openings 20 around the centering opening 18 are arranged in the present exemplary embodiment, in which, as shown in FIG. 3, driving projections 21 protrude to form the impeller 8 in the rotational direction in a form-fitting manner with the wheel hub element 10; 11 to connect.

Fig. 3 zeigt in einer Einzelheit das Laufrad 8 mit dem dazugehörigen Laufradnabenelement 10, das die beiden Nabenteile 14 und 15 aufweist. Die Nabenteile 14 und 15 sind dabei kraftschlüssig durch eine Klipsverbindung miteinander verbunden. Dazu weist im vorliegenden Ausführungsbeispiel das Nabenteil 15 einen tellerförmig ausgebildeten Flansch 22 auf, um die Vorspannung der Klipsverbindung zu gewährleisten. An diesen tellerfederförmigen Flansch 22 schließen sich Rastarme 23 an, die durch die Aufnahmeöffnungen 20 des Laufrades 8 und durch Durchgangslöcher 24 der Mitnehmeransätze 21 ragen, wobei die Mitnehmeransätze 21 wie oben beschrieben das Nabenelement 10 formschlüssig in Drehrichtung mit dem Laufrad 8 verbinden. Zum Ineinanderklipsen der Nabenteile 14, 15 weisen die Rastarme 23 einen Klipsansatz 25 auf, der einen Klipsbund 26 der Mitnehmeransätze 21 übergreift.Fig. 3 shows in detail the impeller 8 with the associated impeller hub member 10, which has the two hub parts 14 and 15. The hub parts 14 and 15 are positively connected by a clip connection. For this purpose, in the present embodiment, the hub member 15 has a plate-shaped flange 22 to ensure the bias of the clip connection. At this plate spring-shaped flange 22 close latching arms 23 which protrude through the receiving openings 20 of the impeller 8 and through holes 24 of the cam projections 21, wherein the Mitnehmeransätze 21 as described above, the hub member 10 form fit in the direction of rotation with the impeller 8 connect. For interlocking of the hub parts 14, 15, the latching arms 23 on a Klipsansatz 25, which engages over a Klipsbund 26 of the Mitnehmeransätze 21.

Das Nabenteil 14 weist den Nabenansatz 19 auf, der die Zentrieröffnung 18 des Laufrades 8 und eine Zentrieröffnung 27 des Nabenteils 15 derart durchragt, dass das Laufrad 8 durch das Laufradnabenelement 10 in Bezug auf die Elektromotorwelle 12 zentriert gehalten ist.The hub part 14 has the hub projection 19, which projects through the centering opening 18 of the impeller 8 and a centering opening 27 of the hub part 15 such that the impeller 8 is held centered by the impeller hub element 10 with respect to the electric motor shaft 12.

Desweitern weist das Nabenteil 14 an seiner zur Elektromotorwelle 12 gerichteten Innenseite Längsriefen 28 auf, die mit Klebemittel gefüllt werden, um die Elektromorwelle 12 mit dem Laufradnabenelement 10 kraftschlüssig zu verbinden. Vorzugsweise sind die Nebnteile 14, 16 bzw. 15, 17 aus Kunststoff gefertigt.Desweitern, the hub member 14 on its side facing the electric motor shaft 12 inside longitudinal grooves 28 which are filled with adhesive to connect the electric motor shaft 12 with the impeller hub member 10 frictionally. Preferably, the sockets 14, 16 and 15, 17 are made of plastic.

Es sollte jedoch deutlich sein, dass hinsichtlich der Ausführung des Laufradnabenelementes die verschiedensten Formen des Kraftformschlusses und auch die verschiedensten Materialien eingesetzt werden können im Rahmen des Gegenstandes der folgenden Ansprüche.However, it should be clear that with regard to the execution of the wheel hub member, the most varied forms of Kraftformschlusses and also the most diverse materials can be used within the scope of the subject of the following claims.

Claims (6)

  1. Electrically driven air pump (1) having a housing (2), in which an electric motor and a pump mechanism (3) are disposed, wherein the pump mechanism (3) comprises at least one pump impeller (8, 9), which is disposed by means of an impeller hub element (10, 11) on an electric motor shaft (12),
    characterized in that the impeller hub element (10; 11) comprises two hub parts (14, 15; 16, 17), which are situated in each case on each impeller side and connected positively in direction of rotation to the impeller (8; 9) by means of driving projections (22) that project into receiving openings (20) of the impeller (8; 9), wherein the hub parts (14, 15; 16, 17) are connected non-positively to one another by means of a clip connection.
  2. Electrically driven air pump according to claim 1, characterized in that at least one of the hub parts (14, 15; 16, 17) has a flange (22) of a disk-spring-shaped design in order to guarantee the bias of the clip connection.
  3. Electrically driven air pump according to claim 1 or 2, characterized in that one of the hub parts (15; 17) has detent arms (23), which project through through-holes (24) of the driving projections (21) of the other hub part (14; 16) and engage with a clip projection (25) over a clip collar (26).
  4. Electrically driven air pump according to one of the preceding claims, characterized in that the hub parts (14, 15; 16, 17) are held aligned relative to one another and in relation to the centring opening (18) of the impeller (8; 9) by means of a hub projection (19) of one of the hub parts (14; 16) that projects through the centring opening (18) of the impeller (8; 9) and through a centring opening (27) of the other hub part (15; 17).
  5. Electrically driven air pump according to one of the preceding claims, characterized in that a hub opening that receives the electric motor shaft has longitudinal furrows (28), which are filled with adhesive.
  6. Electrically driven air pump according to one of the preceding claims, characterized in that the hub parts (14, 15; 16, 17) are made of plastics material.
EP00113757A 1999-09-14 2000-06-29 Electric motor driven air pump Expired - Lifetime EP1085215B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19943816A DE19943816A1 (en) 1999-09-14 1999-09-14 Electrically powered air pump
DE19943816 1999-09-14

Publications (3)

Publication Number Publication Date
EP1085215A2 EP1085215A2 (en) 2001-03-21
EP1085215A3 EP1085215A3 (en) 2002-05-08
EP1085215B1 true EP1085215B1 (en) 2006-02-01

Family

ID=7921855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00113757A Expired - Lifetime EP1085215B1 (en) 1999-09-14 2000-06-29 Electric motor driven air pump

Country Status (3)

Country Link
EP (1) EP1085215B1 (en)
DE (2) DE19943816A1 (en)
ES (1) ES2257240T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9205097U1 (en) * 1992-04-11 1993-08-05 Robert Bosch Gmbh, 70469 Stuttgart Fan with a fan wheel with a pot-shaped hub
DE19611512A1 (en) 1996-03-23 1997-09-25 Pierburg Ag Electrically powered air pump
FR2756021B1 (en) * 1996-11-19 2001-11-23 Valeo Systemes Dessuyage SIMPLIFIED PROPELLER MOUNT MOTOR
DE19743069A1 (en) * 1997-09-30 1999-04-01 Pierburg Ag Electrically powered air pump

Also Published As

Publication number Publication date
DE50012149D1 (en) 2006-04-13
EP1085215A2 (en) 2001-03-21
EP1085215A3 (en) 2002-05-08
DE19943816A1 (en) 2001-03-15
ES2257240T3 (en) 2006-08-01

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