EP0874160A2 - Dispositif de soufflante - Google Patents

Dispositif de soufflante Download PDF

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Publication number
EP0874160A2
EP0874160A2 EP98104805A EP98104805A EP0874160A2 EP 0874160 A2 EP0874160 A2 EP 0874160A2 EP 98104805 A EP98104805 A EP 98104805A EP 98104805 A EP98104805 A EP 98104805A EP 0874160 A2 EP0874160 A2 EP 0874160A2
Authority
EP
European Patent Office
Prior art keywords
blower
housing
cover plate
gap
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Withdrawn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
EP98104805A
Other languages
German (de)
English (en)
Other versions
EP0874160A3 (fr
Inventor
Diethard Görig
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 EP0874160A2 publication Critical patent/EP0874160A2/fr
Publication of EP0874160A3 publication Critical patent/EP0874160A3/fr
Withdrawn legal-status Critical Current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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a blower arrangement consisting of a motor driven centrifugal fan wheel, which is associated with a stator that the centrifugal fan wheel circumferentially surrounds and together with the centrifugal impeller in a common blower housing that can be attached to the motor housing is installed, in which centrifugal impeller on one with the shaft of the motor axially projecting conveyor blades are arranged in a rotationally fixed coupling disk, on the side facing away from the supporting disk, a cover disk is placed on which blower arrangement also the blower housing in the region of the inlet opening the radially inner peripheral edge of the cover disk overlaps while leaving a gap.
  • Such a blower arrangement is known from EP-B-0 467 557. With such a Fan arrangement produces the centrifugal fan wheel on its periphery static pressure. A part of this static pressure stands above that between the Centrifugal fan wheel and the fan housing from the outer circumference of the centrifugal fan wheel gap extending to the inlet opening of the blower housing in the area of the inlet opening. Opposite that prevailing at the inlet opening Intake pressure there is a significant pressure difference, which leads to a backflow part of the air conveyed through the inevitable gap between the blower housing and the inner peripheral edge of the cover plate of the centrifugal impeller leads.
  • the known Blower arrangement at the inlet opening of the blower housing an axially extending flange edge is provided, which is formed on the cover plate also axially extending cylindrical edge overlaps. Because of this overlap there is a relatively long narrow gap, which has an improved sealing effect owns. For manufacturing reasons and also due to the always existing Such tolerances cannot make such a gap arbitrarily narrow, so that considerable backflow losses still occur.
  • the invention has for its object a fan assembly of the type described Art in such a way that the backflow losses are reduced even further are.
  • the object is achieved according to the invention in that in the Area of overlap of the blower housing with the cover plate on the blower housing an adherent elastic sealant is applied to the when attaching the blower housing to the motor housing, avoiding a Fills the gap firmly on the cover plate. Through the sealant the gap is completely closed. Because the sealant is not on the cover plate of the centrifugal impeller sticks, this can stick in spite of the inserted in the gap Turn the sealant freely. Dimensional deviations with regard to the concentricity of the Cover plate can due to the elastic nature of the sealant be compensated for as the sealant in the presence of such deviations is ground accordingly.
  • Consist of the blower housing and the cover plate of the centrifugal impeller different materials e.g. made of sheet iron and aluminum
  • the Consistency of the sealant should be such that between this and the Cover plate material no sticking between the material of the blower housing and the sealant, on the other hand, adheres firmly.
  • Sticking of the sealant to the cover plate can also be avoided by that at least in the area of the inner peripheral edge of the cover disc there is liability with the sealant preventing coating is applied. For example by placing a film in the area of the inner peripheral edge of the cover plate sticking of the sealant to the cover plate can be prevented.
  • Such a gradually hardening sealant retains its shape once it has been reached and thereby ensures good sealing of the gap in the long term.
  • centrifugal fan 3 is rotatably connected to its support plate 4.
  • the centrifugal fan wheel 3 is also assigned a stator 7. This idler 7 is fixed on the outer circumference one of the drive-side shaft bearing 8 receiving axially projecting Housing approach 9 of the motor housing 10 is arranged.
  • On the centrifugal impeller 3 facing side has the stator 7 guide vanes 11, which Centrifugal impeller 3 surrounded with a radial distance 12.
  • the centrifugal fan wheel 3 is together with the stator 7 in a fan housing 13 arranged.
  • the blower housing 13 is molded onto the motor housing Flange cup 14 and a housing cap placed on its flange edge 15 16 formed.
  • the inlet opening 17 for the Fan arrangement In the middle of the housing cap 16 is the inlet opening 17 for the Fan arrangement provided.
  • an annular bead 18 pointing towards the centrifugal impeller 3. This Ring bead 18 overlaps with its free end 19 the inner peripheral edge 20 of the Cover plate 6 leaving a gap 21.
  • the gap 21 has a relatively large width.
  • an elastic sealant 23 is attached to the inside of the Ring bead 18 introduced an elastic sealant 23. Attaching this Sealant 23 expediently takes place before the housing cap is attached 16 on the flange edge 15. When pressing the housing cap 16 onto the The flange edge 15 becomes the sealing compound 23 in the region of the inner peripheral edge 20 the cover plate 6 against this and pressed into the gap 21. This will make the gap 21 initially completely closed.
  • the sealant 23 is either of theirs Obtain consistency in such a way that it is only on the material of the housing cap 16 but does not adhere to the cover plate 6 or it is replaced by a corresponding one Topping, e.g. a film on the cover plate 6 prevents the sealant from sticking 23 takes place on the cover plate 6.
  • the centrifugal fan wheel 3 despite the tight fit of the sealing compound 23 on the cover plate 6 still rotate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP98104805A 1997-04-23 1998-03-17 Dispositif de soufflante Withdrawn EP0874160A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19717154 1997-04-23
DE19717154A DE19717154A1 (de) 1997-04-23 1997-04-23 Gebläseanordnung

Publications (2)

Publication Number Publication Date
EP0874160A2 true EP0874160A2 (fr) 1998-10-28
EP0874160A3 EP0874160A3 (fr) 1999-11-17

Family

ID=7827501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104805A Withdrawn EP0874160A3 (fr) 1997-04-23 1998-03-17 Dispositif de soufflante

Country Status (7)

Country Link
EP (1) EP0874160A3 (fr)
JP (1) JPH10299696A (fr)
KR (1) KR19980080966A (fr)
CZ (1) CZ122398A3 (fr)
DE (1) DE19717154A1 (fr)
PL (1) PL325797A1 (fr)
TR (1) TR199800733A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794192A1 (fr) * 1999-05-27 2000-12-01 Man B & W Diesel Ag Ventilateur avec rondelle-entretoise

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19855905B4 (de) * 1998-12-03 2013-02-21 BSH Bosch und Siemens Hausgeräte GmbH Gebläseanordnung
DE19951369A1 (de) * 1999-10-26 2001-05-10 Bosch Gmbh Robert Gebläse
DE10148510C1 (de) 2001-10-01 2003-06-18 Bsh Bosch Siemens Hausgeraete Dichtung zum Einsatz in einer Gebläseanordnung
DE102013111051A1 (de) 2013-10-07 2015-04-09 Miele & Cie. Kg Gebläseanordnung für ein Bodenpflegegerät
DE102016116829A1 (de) 2016-09-08 2018-03-08 Miele & Cie. Kg Gebläseanordnung für ein Haushaltgerät, wie Staubsauger

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467557B1 (fr) 1990-07-20 1994-12-14 Hitachi, Ltd. Soufflante d'aspirateur avec roue de ventilateur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966633C (de) * 1953-12-05 1957-08-29 Bruno Eck Dr Ing Dichtung zwischen der Laufraddeckscheibe und dem Gehaeuse eines Geblaeses
US3313476A (en) * 1965-05-03 1967-04-11 Electrolux Corp Centrifugal fan having substantially reduced internal air recirculation
DE2109409A1 (de) * 1971-02-27 1972-09-07 Luft U Kaeltetechnik Veb K Anordnung zur Verminderung der Spaltverluste bei Lüftern mit schwingend gelagertem Laufrad
JP2987286B2 (ja) * 1994-01-12 1999-12-06 株式会社日立製作所 電動送風機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467557B1 (fr) 1990-07-20 1994-12-14 Hitachi, Ltd. Soufflante d'aspirateur avec roue de ventilateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794192A1 (fr) * 1999-05-27 2000-12-01 Man B & W Diesel Ag Ventilateur avec rondelle-entretoise

Also Published As

Publication number Publication date
DE19717154A1 (de) 1998-10-29
TR199800733A2 (en) 1998-11-23
KR19980080966A (ko) 1998-11-25
EP0874160A3 (fr) 1999-11-17
CZ122398A3 (cs) 1999-05-12
PL325797A1 (en) 1998-10-26
JPH10299696A (ja) 1998-11-10

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