EP1085215A2 - Electric motor driven air pump - Google Patents

Electric motor driven air pump Download PDF

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Publication number
EP1085215A2
EP1085215A2 EP00113757A EP00113757A EP1085215A2 EP 1085215 A2 EP1085215 A2 EP 1085215A2 EP 00113757 A EP00113757 A EP 00113757A EP 00113757 A EP00113757 A EP 00113757A EP 1085215 A2 EP1085215 A2 EP 1085215A2
Authority
EP
European Patent Office
Prior art keywords
hub
impeller
air pump
electric motor
driven air
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.)
Granted
Application number
EP00113757A
Other languages
German (de)
French (fr)
Other versions
EP1085215A3 (en
EP1085215B1 (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 a Electric motor and a pump unit are arranged, the pump unit at least one Pump impeller having an impeller hub member on an electric motor shaft is arranged.
  • Such a pump is known for example from DE 196 11 512 A1.
  • the pumping station this pump has one or more pump impellers molded from plastic, an impeller hub is molded directly onto the pump impeller. That or the wheels are pushed onto the electric motor shaft and by a metal one End ring secured.
  • the manufacture of such an electrically driven air pump is costly and labor intensive.
  • the object of the invention is to provide a cost-effective way To create air pump that has low running noise and the impeller is not in one separate operation must be balanced.
  • the impeller hub element consists of two hub parts, which are connected to one another in such a way by force fit are connected that the pump impeller with respect to the axis of rotation of the impeller hub member is centered between the two hub parts.
  • FIG. 1 shows the air pump 1 according to the invention.
  • a housing 2 Pump unit 3 and, on the other hand, an electric motor chamber 4 with an electric motor 5.
  • the housing 2 is closed on the pump side by a cover 6 which has an intake manifold 7.
  • the pump unit has two impellers in the present case 8 and 9, which with impeller hub elements 10, 11 on an electric motor shaft 12 of the Electric motor 5 are pressed.
  • the impeller hub elements 10 lie in the pressing direction, 11 against a shaft collar 13.
  • the impeller hub elements 10, 11 additionally glued to the electric motor shaft 12.
  • the impeller hub elements 10, 11 consist (see also FIG. 3) of hub parts 14, 16 and 15, 17.
  • Fig. 2 shows the front view of the pump impeller 8.
  • the pump impeller 8 has one Centering opening 18 through which a hub extension 19 (see FIG. 3) of the hub part 14 projects.
  • Receiving openings are circular in shape around the centering opening 18 in the present exemplary embodiment 20 arranged, in which, as shown in Figure 3, protruding lugs 21 protrude, around the impeller 8 in the direction of rotation with the impeller hub element 10; 11 to connect.
  • Fig. 3 shows in detail the impeller 8 with the associated impeller hub element 10, which has the two hub parts 14 and 15.
  • the hub parts 14 and 15 are there non-positively connected by a clip connection.
  • the hub part 15 has a plate-shaped flange 22, to ensure the pretension of the clip connection.
  • On this disc-shaped Flange 22 are connected to locking arms 23 which pass through the receiving openings 20 of the impeller 8 and protrude through through holes 24 of the driver lugs 21, the driver lugs 21, as described above, the hub element 10 in a positive manner in the direction of rotation Connect with the impeller 8,
  • To clip the hub parts 14, 15 have the Latching arms 18 have a clip attachment 25, which has a clip collar 26 of the driver attachments 22 spreads.
  • the hub part 14 has the hub extension 19 which defines the centering opening 18 of the impeller 8 and extends through a centering opening 27 of the hub part 15 such that the impeller 8 passes through the impeller hub member 10 is held centered with respect to the electric motor shaft 12.
  • the hub part 14 has on its inside facing the electric motor shaft 12 Longitudinal grooves 28, which are filled with adhesive to the electromotive shaft 12 with the Impeller hub element 10 to connect non-positively.
  • the secondary parts 14 are preferably 16 or 15, 17 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)

Abstract

Pump has housing where electric motor and pump mechanism are arranged, with pump mechanism having pump rotor wheel (8,9) with hub element (10,11) mounted on electric motor shaft. Hub element has two parts (14,15;16,17) mounted on each side of rotor wheel and coupled to rotor wheel via drive fittings protruding into mounting openings in rotor wheel. Hub parts are connected together via a clip connector.

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 ein Laufradnabenelement auf einer Elektromotorwelle angeordnet ist.The invention relates to an electrically driven air pump with a housing in which a Electric motor and a pump unit are arranged, the pump unit at least one Pump impeller having an impeller hub member on an electric motor shaft is arranged.

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 pumping station this pump has one or more pump impellers molded from plastic, an impeller hub is molded directly onto the pump impeller. That or the wheels are pushed onto the electric motor shaft and by a metal one End ring secured. The manufacture 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 object of the invention is to provide a cost-effective way To create air pump that has low running noise and the impeller is not in one separate operation must be balanced.

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 air pump according to the invention in that the impeller hub element consists of two hub parts, which are connected to one another in such a way by force fit are connected that the pump impeller with respect to the axis of rotation of the impeller hub member is 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 pump can be produced, which is also almost free of unbalance due to the positive connection.

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

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird die Erfindung nachfolgend näher beschrieben. Based on an embodiment shown in the drawing, the invention 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 impeller hub element.

    • 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 air pump 1 according to the invention. On the one hand, there is a in a housing 2 Pump unit 3 and, on the other hand, an electric motor chamber 4 with an electric motor 5. The housing 2 is closed on the pump side by a cover 6 which has an intake manifold 7. The pump unit has two impellers in the present case 8 and 9, which with impeller hub elements 10, 11 on an electric motor shaft 12 of the Electric motor 5 are pressed. The impeller hub elements 10 lie in the pressing direction, 11 against a shaft collar 13. To prevent displacement in the axial direction, the impeller hub elements 10, 11 additionally glued to the electric motor shaft 12. The impeller hub elements 10, 11 consist (see also FIG. 3) of hub parts 14, 16 and 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.Fig. 2 shows the front view of the pump impeller 8. The pump impeller 8 has one Centering opening 18 through which a hub extension 19 (see FIG. 3) of the hub part 14 projects. Receiving openings are circular in shape around the centering opening 18 in the present exemplary embodiment 20 arranged, in which, as shown in Figure 3, protruding lugs 21 protrude, around the impeller 8 in the direction of rotation with the impeller 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 18 einen Klipsansatz 25 auf, der einen Klipsbund 26 der Mitnehmeransätze 22 übergreift.Fig. 3 shows in detail the impeller 8 with the associated impeller hub element 10, which has the two hub parts 14 and 15. The hub parts 14 and 15 are there non-positively connected by a clip connection. This is indicated in the present Exemplary embodiment, the hub part 15 has a plate-shaped flange 22, to ensure the pretension of the clip connection. On this disc-shaped Flange 22 are connected to locking arms 23 which pass through the receiving openings 20 of the impeller 8 and protrude through through holes 24 of the driver lugs 21, the driver lugs 21, as described above, the hub element 10 in a positive manner in the direction of rotation Connect with the impeller 8, To clip the hub parts 14, 15 have the Latching arms 18 have a clip attachment 25, which has a clip collar 26 of the driver attachments 22 spreads.

    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 extension 19 which defines the centering opening 18 of the impeller 8 and extends through a centering opening 27 of the hub part 15 such that the impeller 8 passes through the impeller hub member 10 is held centered 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.Furthermore, the hub part 14 has on its inside facing the electric motor shaft 12 Longitudinal grooves 28, which are filled with adhesive to the electromotive shaft 12 with the Impeller hub element 10 to connect non-positively. The secondary parts 14 are preferably 16 or 15, 17 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.However, it should be clear that regarding the design of the impeller hub element the most diverse forms of force fit and also the most diverse materials can be used.

    Claims (6)

    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, dadurch gekennzeichnet, dass das Laufradnabenelement (10; 11) zwei Nabenteile (14, 15; 16, 17) aufweist, die jeweils auf jeder Laufradseite gelegen sind und mittels in Aufnahmeöffnungen (21) des Laufrades (8; 9) hineinragender Mitnehmeransätze (22) formschlüssig in Drehrichtung mit dem Laufrad (8; 9) verbunden sind, wobei die Nabenteile (14, 15; 16, 17) kraftschlüssig miteinander durch eine Klipsverbindung verbunden sind.Electrically driven air pump with a housing in which an electric motor and a pump unit are arranged, the pump unit having at least one pump impeller which is arranged with an impeller hub element on an electric motor shaft, characterized in that the impeller hub element (10; 11) has two hub parts (14 , 15; 16, 17), which are located on each side of the impeller and are positively connected in the direction of rotation to the impeller (8; 9) by means of driver projections (22) projecting into receiving openings (21) of the impeller (8; 9) the hub parts (14, 15; 16, 17) are non-positively connected to one another by a clip connection. Elektrisch angetriebene Luftpumpe nach Anspruch 1, dadurch gekennzeichnet, dass zumindest eines der Nabenteile (14, 15; 16, 17) einen tellerfederförmig ausgebildeten Flansch (22) aufweist, um die Vorspannung der Klipsverbindung zu gewährleisten.Electrically driven air pump according to claim 1, characterized in that at least one of the hub parts (14, 15; 16, 17) has a plate-shaped flange (22) to ensure the pretensioning of the clip connection. Elektrisch angetriebene Luftpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eines der Nabenteile (15; 17) Rastarme (23) aufweist, die durch Durchgangslöcher (24) der Mitnehmeransätze (21) des anderen Nabenteils (14; 16) ragen und mit einem Klipsansatz (25) einen Klipsbund (26) übergreifen.Electrically driven air pump according to claim 1 or 2, characterized in that one of the hub parts (15; 17) has latching arms (23) which protrude through through holes (24) of the driver lugs (21) of the other hub part (14; 16) and with one Clip approach (25) overlap a clip collar (26). Elektrisch angetriebene Luftpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Nabenteile (14, 15; 16, 17) durch einen Nabenansatz (19) eines der Nabenteile (14; 16), der die Zentrieröffnung (18) des Laufrades (8; 9) und eine Zentrieröffnung (27) des anderen Nabenteiles (15; 17) durchragt, zueinander und in Bezug auf die Zentrieröffnung (18) des Laufrades (8; 9) ausgerichtet gehalten sind.Electrically driven air pump according to one of the preceding claims, characterized in that the hub parts (14, 15; 16, 17) by a hub extension (19) of one of the hub parts (14; 16) which the centering opening (18) of the impeller (8; 9) and a centering opening (27) of the other hub part (15; 17) protrudes, are kept aligned with each other and with respect to the centering opening (18) of the impeller (8; 9). Elektrisch angetriebene Luftpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine die Elektromotorwelle aufnehmende Nabenöffnung Längsriefen (28) aufweist, die mit Klebemittel gefüllt sind. Electrically driven air pump according to one of the preceding claims, characterized in that a hub opening which receives the electric motor shaft has longitudinal grooves (28) which are filled with adhesive. Elektrisch angetriebene Luftpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Nabenteile (14, 15; 16, 17) aus Kunststoff gefertigt sind.Electrically driven air pump according to one of the preceding claims, characterized in that the hub parts (14, 15; 16, 17) are made of plastic.
    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 true EP1085215A2 (en) 2001-03-21
    EP1085215A3 EP1085215A3 (en) 2002-05-08
    EP1085215B1 EP1085215B1 (en) 2006-02-01

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    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)

    Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19611512A1 (en) 1996-03-23 1997-09-25 Pierburg Ag Electrically powered air pump

    Family Cites Families (3)

    * 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
    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

    Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19611512A1 (en) 1996-03-23 1997-09-25 Pierburg Ag Electrically powered air pump

    Also Published As

    Publication number Publication date
    DE50012149D1 (en) 2006-04-13
    EP1085215A3 (en) 2002-05-08
    DE19943816A1 (en) 2001-03-15
    ES2257240T3 (en) 2006-08-01
    EP1085215B1 (en) 2006-02-01

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