EP0922861A2 - Blower unit - Google Patents

Blower unit Download PDF

Info

Publication number
EP0922861A2
EP0922861A2 EP98123097A EP98123097A EP0922861A2 EP 0922861 A2 EP0922861 A2 EP 0922861A2 EP 98123097 A EP98123097 A EP 98123097A EP 98123097 A EP98123097 A EP 98123097A EP 0922861 A2 EP0922861 A2 EP 0922861A2
Authority
EP
European Patent Office
Prior art keywords
blower
hood
blower unit
housing
drive 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.)
Withdrawn
Application number
EP98123097A
Other languages
German (de)
French (fr)
Other versions
EP0922861A3 (en
Inventor
Horst Gensler
Albert Kleinhenz
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0922861A2 publication Critical patent/EP0922861A2/en
Publication of EP0922861A3 publication Critical patent/EP0922861A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • 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
    • 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
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced

Definitions

  • the invention relates to a blower unit, the at least one of an engine has driven impeller, which of a on a housing part of the Blower unit attached fan hood is surrounded.
  • Such a blower unit is known from DE-U-87 12 430. With this Blower unit are the two driven by an electric motor Blower wheels and a guide disk arranged between these blower wheels surrounded by a blower hood.
  • This blower hood is with a mounting edge pushed onto a centering rim formed on the housing of the blower unit and is thus held on the housing of the blower unit.
  • Fan hoods are manufactured as deep-drawn parts from sheet steel. Such sheet steel hoods have only low noise damping properties and can even act as a sound box to increase noise.
  • the invention has for its object a blower unit of the type described Art to improve in that a significant noise reduction is achieved.
  • the fan cover consists of a combination of plastic and natural fibers.
  • a such a combination of materials results in a hood with a soft spring characteristic. Due to such a soft characteristic, there is a strong noise reduction.
  • Fan hoods made from flax fibers have proven to be particularly advantageous blended polypropylene.
  • blower unit shown as an exemplary embodiment in the drawing for a vacuum cleaner, the invention will be described in more detail below explained.
  • the blower unit shown has an electric drive motor 1 whose shaft rotates at least one impeller, not visible in the drawing is arranged.
  • a blower hood 2 is placed over this blower wheel is attached to an intermediate housing 3 connected to the drive motor 1.
  • the blower hood 2 has on its side facing away from the drive motor 1 an inlet opening through which air is drawn in by the impeller becomes. The air can either exit via appropriate outlet openings the intermediate housing or on the bearing plate 4 of the drive motor 1.
  • the blower hood 2 consists of a material mixture of plastic and natural fibers, especially made of polypropylene, to which flax fibers are added.
  • Such Blower hood 2 faces a blower hood made of sheet steel a soft characteristic that leads to a strong noise reduction. Therefore Blower units with such blower hoods are particularly suitable for Use with vacuum cleaners because of their predominant use in the household sector particularly quiet work is desirable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The blower unit comprises at least one blower wheel driven by a motor. The blower wheel has a hood attached to the housing. The hood consists of a combination of plastics and natural fibers. The hood preferably consists of flax fibers mixed with polypropylene.

Description

Die Erfindung betrifft ein Gebläseaggregat, das mindestens ein von einem Motor angetriebenes Gebläserad aufweist, welches von einer an einem Gehäuseteil des Gebläseaggregates befestigten Gebläsehaube umgeben ist.The invention relates to a blower unit, the at least one of an engine has driven impeller, which of a on a housing part of the Blower unit attached fan hood is surrounded.

Ein solches Gebläseaggregat ist durch das DE-U-87 12 430 bekannt. Bei diesem Gebläseaggregat sind die beiden von einem elektrischen Motor angetriebenen Gebläseräder und eine zwischen diesen Gebläserädern angeordnete Leitscheibe von einer Gebläsehaube umgeben. Diese Gebläsehaube ist mit einem Befestigungsrand auf einen am Gehäuse des Gebläseaggregates ausgebildeten Zentrierrand aufgeschoben und wird somit am Gehäuse des Gebläseaggregates gehalten. Derartige Gebläsehauben werden als Tiefziehteile aus Stahlblech hergestellt. Solche Stahlblechhauben besitzen nur geringe Geräuschdämpfungseigenschaften und können sogar als Resonanzkörper noch geräuschverstärkend wirken.Such a blower unit is known from DE-U-87 12 430. With this Blower unit are the two driven by an electric motor Blower wheels and a guide disk arranged between these blower wheels surrounded by a blower hood. This blower hood is with a mounting edge pushed onto a centering rim formed on the housing of the blower unit and is thus held on the housing of the blower unit. Such Fan hoods are manufactured as deep-drawn parts from sheet steel. Such sheet steel hoods have only low noise damping properties and can even act as a sound box to increase noise.

Der Erfindung liegt die Aufgabe zugrunde, ein Gebläseaggregat der eingangs beschriebenen Art dahingehend zu verbessern, daß eine wesentliche Geräuschreduzierung erreicht wird.The invention has for its object a blower unit of the type described Art to improve in that a significant noise reduction is achieved.

Die Lösung der gestellten Aufgabe gelingt nach der Erfindung dadurch, daß die Gebläsehaube aus einer Materialkombination von Kunststoff und Naturfasern besteht. Durch eine solche Materialkombination ergibt sich eine Haube mit einer weichen Federcharakteristik. Aufgrund einer solchen weichen Charakteristik tritt eine starke Geräuschdämpfung ein. Als besonders vorteilhaft haben sich Gebläsehauben erwiesen, die aus mit Flachsfasern vermischtem Polypropylen bestehen. The object is achieved according to the invention in that the fan cover consists of a combination of plastic and natural fibers. By a such a combination of materials results in a hood with a soft spring characteristic. Due to such a soft characteristic, there is a strong noise reduction. Fan hoods made from flax fibers have proven to be particularly advantageous blended polypropylene.

Anhand eines in der Zeichnung als Ausführungsbeispiel dargestellten Gebläseaggregates für einen Staubsauger wird die Erfindung nachfolgend noch näher erläutert.Using a blower unit shown as an exemplary embodiment in the drawing for a vacuum cleaner, the invention will be described in more detail below explained.

Das dargestellte Gebläseaggregat besitzt einen elektrischen Antriebsmotor 1, auf dessen Welle mindestens ein, in der Zeichnung nicht sichtbares Gebläserad drehfest angeordnet ist. Über dieses Gebläserad ist eine Gebläsehaube 2 gesteckt, die an einem mit dem Antriebsmotor 1 verbundenen Zwischengehäuse 3 befestigt ist. Die Gebläsehaube 2 weist auf ihrer dem Antriebsmotor 1 abgewandten Seite bekannterweise eine Einlaßöffnung auf, über die von dem Gebläserad Luft angesaugt wird. Der Austritt der Luft kann entweder über entsprechende Auslaßöffnungen an dem Zwischengehäuse oder am Lagerschild 4 des Antriebsmotors 1 erfolgen.The blower unit shown has an electric drive motor 1 whose shaft rotates at least one impeller, not visible in the drawing is arranged. A blower hood 2 is placed over this blower wheel is attached to an intermediate housing 3 connected to the drive motor 1. As is known, the blower hood 2 has on its side facing away from the drive motor 1 an inlet opening through which air is drawn in by the impeller becomes. The air can either exit via appropriate outlet openings the intermediate housing or on the bearing plate 4 of the drive motor 1.

Die Gebläsehaube 2 besteht aus einer Materialmischung von Kunststoff und Naturfasern, speziell aus Polypropylen, dem Flachsfasern beigemischt sind. Eine solche Gebläsehaube 2 weist gegenüber einer aus Stahlblech bestehenden Gebläsehaube eine weiche Charakteristik auf, die zu einer starken Geräuschdämpfung führt. Daher eignen sich Gebläseaggregate mit derartigen Gebläsehauben insbesondere für den Einsatz bei Staubsaugern, da wegen deren vorwiegenden Verwendung im Haushaltsbereich ein besonders ruhiges Arbeiten erwünscht ist. The blower hood 2 consists of a material mixture of plastic and natural fibers, especially made of polypropylene, to which flax fibers are added. Such Blower hood 2 faces a blower hood made of sheet steel a soft characteristic that leads to a strong noise reduction. Therefore Blower units with such blower hoods are particularly suitable for Use with vacuum cleaners because of their predominant use in the household sector particularly quiet work is desirable.

BezugszeichenlisteReference list

11
AntriebsmotorDrive motor
22nd
GebläsehaubeFan cover
33rd
ZwischengehäuseIntermediate housing
44th
LagerschildEnd shield

Claims (2)

Gebläseaggregat, das mindestens ein von einem Motor angetriebenes Gebläserad aufweist, welches von einer an einem Gehäuseteil des Gebläseaggregates befestigten Gebläsehaube umgeben ist,
dadurch gekennzeichnet, daß die Gebläsehaube aus einer Materialkombination von Kunststoff und Naturfasern besteht.Blower unit, which has at least one blower wheel driven by a motor, which is surrounded by a blower hood attached to a housing part of the blower unit,
characterized in that the blower hood consists of a material combination of plastic and natural fibers. Gebläseaggregat nach Anspruch 1,
dadurch gekennzeichnet, daß die Gebläsehaube aus mit Flachsfasern vermischtem Polypropylen besteht.Blower unit according to claim 1,
characterized in that the blower hood consists of polypropylene mixed with flax fibers.
EP98123097A 1997-12-11 1998-12-10 Blower unit Withdrawn EP0922861A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19755172 1997-12-11
DE19755172A DE19755172A1 (en) 1997-12-11 1997-12-11 Blower unit

Publications (2)

Publication Number Publication Date
EP0922861A2 true EP0922861A2 (en) 1999-06-16
EP0922861A3 EP0922861A3 (en) 2000-04-12

Family

ID=7851626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123097A Withdrawn EP0922861A3 (en) 1997-12-11 1998-12-10 Blower unit

Country Status (2)

Country Link
EP (1) EP0922861A3 (en)
DE (1) DE19755172A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1306559A1 (en) * 2001-10-24 2003-05-02 DENSO THERMAL SYSTEMS S.p.A. Ventilation assembly for vehicles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009022819A1 (en) 2009-05-27 2010-12-09 Wessel-Werk Gmbh Natural fiber-reinforced thermoplastic plastic for manufacturing plastic-die casting components for vacuum cleaner nozzles, has polymeric basic substance such as polypropylene or bio-polymer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8712430U1 (en) 1987-09-14 1989-01-12 Siemens AG, 1000 Berlin und 8000 München Blower unit with a two-stage blower

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600692C (en) *
DE4226988A1 (en) * 1992-08-14 1994-02-17 Wulfram John Schmucker Composite shaped pieces with sandwich structure - have centre layer of foamed synthetic resin and outer layers of natural fibres oriented in specified directions.
EP0596379A1 (en) * 1992-10-31 1994-05-11 Hoechst Aktiengesellschaft Plastic moulding composition for the production of moulded parts with a colour matching decoratire effect
FI930424A0 (en) * 1993-02-01 1993-02-01 Rakennuspalikka Oy FIBERARMERAD OCH VAERMEISOLERANDE KONSTRUKTIONSDEL
DE9310087U1 (en) * 1993-07-07 1993-09-23 Norbert Zewe GmbH, 66557 Illingen ARRANGEMENT OF A TURBINE UNIT FOR DRYING THE BUILDING IN A SOUND-INSULATING HOUSING
DE4331747A1 (en) * 1993-09-20 1995-03-23 Wuenning Paul Extruded, fiber-reinforced natural material granulate for thermoplastic processing, and process for its production
DE4407597A1 (en) * 1994-03-08 1995-09-14 Thueringisches Inst Textil Improving adhesion of natural cellulosic fibres to thermoplastics
DE19542498A1 (en) * 1995-11-15 1997-05-22 Bayer Ag Reinforced biodegradable thermoplastic moulding materials
DE19548854C2 (en) * 1995-12-27 1997-10-02 Ebers & Mueller Fibrit Process for the manufacture of articles from fiber-reinforced thermoplastics
DE29713856U1 (en) * 1997-08-04 1997-10-02 Schüco International KG, 33609 Bielefeld Solid or hollow profile made of fiber-reinforced plastic

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8712430U1 (en) 1987-09-14 1989-01-12 Siemens AG, 1000 Berlin und 8000 München Blower unit with a two-stage blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1306559A1 (en) * 2001-10-24 2003-05-02 DENSO THERMAL SYSTEMS S.p.A. Ventilation assembly for vehicles

Also Published As

Publication number Publication date
EP0922861A3 (en) 2000-04-12
DE19755172A1 (en) 1999-06-17

Similar Documents

Publication Publication Date Title
EP0182145B1 (en) One piece synthetic material fan impeller
DE19908353A1 (en) Grinder machine with plinth and protective plate
EP0304638B1 (en) Ventilator
EP0692076A1 (en) Radial impeller
EP0627561B1 (en) Radial blorier
CH654379A5 (en) SMALL BLOWER.
WO2000028150A1 (en) Sit-on sweeper with a tail engine
EP0922861A2 (en) Blower unit
DE19507270A1 (en) Vibration dampers for vacuum cleaner
DE3924281A1 (en) DEVICE FOR CONVEYING A GASEOUS MEDIUM
DE3220574A1 (en) STEEL-FREE AXIAL FAN, ESPECIALLY FOR ELECTRICALLY DRIVED MOTOR VEHICLE RADIATOR FANS
DE3631942C2 (en)
DE9016767U1 (en) Extractor hood
EP0522324B1 (en) Pumping assembly made of a flow machine and drive motor
EP0826262B1 (en) Low-noise electric motor, especially commutator motor
DE19855905B4 (en) blower assembly
AT205410B (en) Blower for material handling
DE1628682A1 (en) Carpet sweeper
DE587236C (en) Floor polisher with two disc brushes
DE102007036161A1 (en) Suction brush arrangement for a dust collecting robot uses a suction air stream produced using a cross-flow fan
DE2407614A1 (en) MULTI-STAGE VACUUM CLEANER COMPRESSOR
DE1628687C (en) Arrangement of a motor blower unit in a vacuum cleaner housing
DE3607106A1 (en) Dust extraction device for rotary grinding machines
DE2024023A1 (en) Multi-stage blower
DE3207968A1 (en) HANDBAND SANDER

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000913

AKX Designation fees paid

Free format text: DE ES FR GB IT SE

17Q First examination report despatched

Effective date: 20021126

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050414