EP2679828A2 - Ventilateur d'aspirateur et aspirateur doté d'un ventilateur d'aspirateur - Google Patents

Ventilateur d'aspirateur et aspirateur doté d'un ventilateur d'aspirateur Download PDF

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Publication number
EP2679828A2
EP2679828A2 EP13174236.3A EP13174236A EP2679828A2 EP 2679828 A2 EP2679828 A2 EP 2679828A2 EP 13174236 A EP13174236 A EP 13174236A EP 2679828 A2 EP2679828 A2 EP 2679828A2
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
impeller
fan
diameter
small
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.)
Ceased
Application number
EP13174236.3A
Other languages
German (de)
English (en)
Other versions
EP2679828A3 (fr
Inventor
Andre Bräuning
Tobias Hofmann
Peter Rademacher
Thomas Seith
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 EP2679828A2 publication Critical patent/EP2679828A2/fr
Publication of EP2679828A3 publication Critical patent/EP2679828A3/fr
Ceased 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings

Definitions

  • the invention relates to a vacuum cleaner fan with an inlet opening through which air can flow into the vacuum cleaner fan.
  • the patent DE 101 48 510 C1 describes a gasket for use in a fan assembly, in particular for direct drive by an electric motor is formed, wherein in the fan assembly, a centrifugal impeller is rotatably connected to a drive shaft, the centrifugal impeller for forming a directed air flow is surrounded by a fan housing and in an inflow opening Sealing ring is arranged for substantially filling an air gap between the centrifugal impeller and the inside of the blower housing. The sealing ring is connected out of the blower housing with a buffer member which sealingly surrounds the inflow opening.
  • the European patent application EP 1 455 094 A1 relates to a radial fan with blades inclined against the direction of travel, in which the outer edge regions of the top and bottom discs project beyond the blade outlet diameter.
  • the thus defined between the bottom and the cover plate and Schaufelaustritts- and outer diameter of the fan wheel diffusion space allows for effective conversion of the kinetic energy of the fluid in a pressure potential.
  • vacuum cleaners From practice, vacuum cleaners, z. As well as battery-operated vacuum cleaner, known which have a fan, the suction air from the environment of the vacuum cleaner during operation sucks. The suction air is moved by a filter system voronges the filter, wherein contained in the suction dust particles are deposited in the filter system.
  • Vacuum cleaners are known in different designs.
  • hand-held vacuum cleaners which are suitable for a freehand use due to their compact size and low weight and which are also referred to as small suction.
  • Such small suckers can be designed, for example, as table vacuum cleaners (also referred to as “crumb suckers”). These usually have a moderate suction power and filtering.
  • handheld vacuum cleaners which are operated substantially in a vertical position and are placed, for example, with a floor nozzle on a floor to be cleaned. Since these usually have a rod or a handle for extending a handle, with which the vacuum cleaner is performed, these are also referred to as Stielsauger.
  • Stielsauger generally have better suction properties and better air filtration than the above-mentioned small suction. It is also known to put a small suction on a Stielsaugerrahmen to use the hand-held small suction as Stielsauger.
  • the vacuum cleaner fan according to the invention has an inlet opening, which are usually preconnected to a filter system. Through the inlet opening, air can flow into the vacuum cleaner fan.
  • the fan includes a fan motor that drives an impeller during operation of the fan so that the impeller rotates about the axis of the motor.
  • a preferred impeller has vanes which serve to accelerate air by rotating the impeller and moving it radially away from the impeller. This creates an overpressure on the outer edge of the impeller, while a negative pressure is created at the inlet opening of the fan.
  • the impeller preferably comprises a bottom disc, which is usually formed substantially circular.
  • a number of wings is mounted, which - with a rotation of the impeller to one in the center of the bottom disc and perpendicular to Surface of the bottom disc located axis of rotation - accelerate the air in the radial direction.
  • a central region of the bottom disc which is preferably concentrically positioned, there is a circular area to which no wings are attached.
  • the diameter of this circular area substantially corresponds to the diameter of the inlet opening, this is particularly preferably the case when the inlet opening has a circular cross-section.
  • the inventors have realized that such an effect can be achieved - preferably in motors with an electrical input power of less than 1000 watts - when the impeller of the circular inner portion of the bottom disk, larger is chosen as usual or when generally the ratio of the diameter of the circular area to an outer diameter of the impeller in the range is preferably greater than 0.5 and less than 0.7, with a preferred outer diameter of at least 60 mm, at most 100 mm, preferably 76 mm ,
  • the invention can be in a simple manner without a more powerful engine installed, the external dimensions of the vacuum cleaner increased or the production of the vacuum cleaner would have to be made more expensive, an increase in the air flow in the vacuum cleaner can be achieved. Increasing the airflow in the vacuum cleaner can easily lead to an improved suction result.
  • the inventors have further recognized that the number of blades of the impeller has an important influence on the aerodynamic efficiency of the overall system. It has been found advantageous that the ratio of the number of blades to the outer diameter of the impeller is at least 0.11 / mm and at most 0.17 / mm. Particularly favorable properties have wheels with at least seven and no more than 19 wings.
  • the impeller may have a cover plate, which is preferably arranged parallel to the bottom plate and on which the wings may be attached.
  • the cover plate has an opening which is particularly preferably circular and can flow through the air from the inlet opening to the wings.
  • the inlet opening of the vacuum cleaner fan has a diameter of at least 38 mm, preferably at least 39 mm, preferably at least 40 mm, preferably at least 41 mm, preferably at least 42 mm, preferably at least 43 mm.
  • this diameter is preferably at most 50 mm, particularly preferably at most 49 mm, particularly preferably at most 48 mm, particularly preferably at most 47 mm, particularly preferably at most 46 mm and very particularly preferably at most 45 mm.
  • the diameter is 44 mm.
  • the outer diameter of the impeller in the vacuum cleaner fan is preferably 76 mm. As a result, a particularly low aerodynamic resistance in the vacuum cleaner fan can be achieved.
  • the vacuum cleaner fan has an electrical power consumption of less than 1000 W.
  • the power consumption is less than 500 W, more preferably less than 250 W and most preferably less than 100 W.
  • a vacuum cleaner with an electrical power of less than 1000 W can be made particularly efficient by the vacuum cleaner fan according to the invention.
  • the vacuum cleaner fan has an impeller having an outer diameter of at least 60 mm and at most 100 mm, which has no vanes in a circular central region of a bottom disk, the diameter of this circular portion at least 43 mm, preferably at least 44 mm and most preferably at least 45 mm.
  • this diameter is preferably at most 50 mm, particularly preferably at most 49 mm, particularly preferably at most 48 mm, particularly preferably at most 47 mm and very particularly preferably at most 46 mm.
  • the outer diameter of the impeller is preferably 76 mm. Due to the larger vane-free central region of the impeller, it is possible to use this in a vacuum cleaner fan with a particularly large inlet opening and so to achieve a lower aerodynamic resistance in the vacuum cleaner fan and in a vacuum cleaner with this vacuum cleaner fan.
  • the impeller has a ratio of vane-free area to outside diameter of the impeller of at least 0.52, preferably at least 0.53, preferably at least 0.54, preferably at least 0.55, preferably at least 0.56 and more particularly preferably at least 0.57.
  • this ratio is preferably at most 0.70, particularly preferably at most 0.69, particularly preferably at most 0.68, particularly preferably at most 0.67, particularly preferably at most 0.66, particularly preferably at most 0.65, particularly preferably at most 0, 64, especially preferably at most 0.63, particularly preferably at most 0.62, particularly preferably at most 0.61, particularly preferably at most 0.60, particularly preferably at most 0.59 and very particularly preferably at most 0.58.
  • the ratio of the number of vanes to the outer diameter of the impeller is at least 0.11 / mm.
  • this ratio is at least 0.12 / mm, more preferably 0.13 / mm and most preferably at least 0.14 / mm.
  • the ratio is preferably at most 0.17 / mm, more preferably at most 0.16 / mm, and most preferably at most 0.15 / mm.
  • the number of blades of the impeller is at least seven. More preferably, the number of wings is at least nine and most preferably at least thirteen. The number of wings is preferably at most nineteen, more preferably at most seventeen, and most preferably at most fifteen.
  • the blades of the impeller are curved from the inside to the outside against the running direction.
  • the wings from the inside to the outside on a progressive or degressive slope.
  • the design of an impeller with a particularly large vane-free central surface can be improved by varying the parameter of the orientation of the vanes. The inventors have found that depending on the speed of the fan motor, a certain inclination against the direction of rotation leads to a higher efficiency of the fan.
  • the vacuum cleaner according to the invention is equipped with a vacuum cleaner fan with an inlet opening of at least 38 mm, a maximum of 50 mm, particularly preferably 44 mm at an electrical power of less than 1000 W and based on the outer diameter of the impeller of at least 60 mm, not more than 100 mm, more preferably 76 mm, and / or an impeller equipped with a central wing-free circular area with the dimensions just mentioned.
  • a vacuum cleaner may have a lower aerodynamic resistance with constant external dimensions, so that a higher air flow in the vacuum cleaner can be achieved without increasing the production costs.
  • the vacuum cleaner according to the invention is a small vacuum cleaner with an electrical input power of less than 1000 W, preferably less than 500 W, more preferably less than 250 W and most preferably less than 100 W.
  • the external dimensions must be made particularly compact.
  • the impeller may only have a very limited diameter.
  • the invention makes it possible to design the impeller so that the largest possible central wing-free surface can be used, so that the inlet opening of the blower can be provided with a large diameter. As a result, a particularly high suction power for a vacuum cleaner can be achieved.
  • the miniature vacuum cleaner is battery operated.
  • a battery-powered small vacuum cleaner is particularly easy to use, since no power cord must be carried.
  • the power of the engine is already limited only by the capacity of the batteries.
  • the invention makes it possible to operate a motor with lower power and thus to realize a longer running time.
  • An inventively preferred vacuum cleaner is a Stielsauger. To be handy, the outer dimensions of a standard vacuum cleaner must not be too large. The invention makes it possible - by lowering the aerodynamic drag in the vacuum cleaner - to achieve a large suction power even with small external dimensions.
  • the vacuum cleaner consists of a combination of a small vacuum cleaner and a Stielsaugerrahmen, comprising an enveloping body, in which the small vacuum cleaner can be used.
  • the small vacuum cleaner can be operated separately as a hand-held vacuum cleaner and preferably has the necessary components or functional devices.
  • the small vacuum cleaner can be used in the Stielsaugerrahmen, so that this combination can be used as a handle vacuum.
  • the Stielsaugerrahmen also has the necessary to operate as a teat armature components, in particular a stem with a Stielsaugerhandgriff or at least a connection for a stem or a Stielsaugerhandgriff.
  • the unit formed by the small vacuum cleaner and the Stielsaugerrahmen can preferably be operated in a set on the floor, inclined or nearly vertical position. Due to the fact that the small vacuum cleaner must be able to be used in the teat cup frame, it must be made particularly compact. This means that the blower and the impeller in the small vacuum cleaner must be made particularly space-saving.
  • the invention makes it possible to use an impeller having a large central wing-free area and in conjunction with a large fan opening allows aerodynamic resistance, which is particularly low, thus enabling a particularly high suction power for a small vacuum.
  • FIG. 1 shows an embodiment of a vacuum cleaner 28 according to the invention as a small suction 1 in a longitudinal section along the axis of the fan motor.
  • the small vacuum cleaner 1 has a substantially cylindrical shape.
  • a middle region of the small vacuum cleaner comprises a Staubabscheide Rhein 2 and a vacuum cleaner fan third
  • the vacuum cleaner fan 3 includes a motor 4, whose axis 5 is connected to an impeller 6.
  • the vacuum cleaner fan 3 has an inlet opening 7, which is provided with a vor fundamentalen filter system 8 for filtering dust from the suction air.
  • a suction head 9 is arranged at the front end of the small sucker 1.
  • the vacuum cleaner fan 3 generates a suction air flow, which passes through the suction head 9 in the Staubabscheide Anlagen 2. In the area of the vacuum cleaner fan 3, the sucked air is blown out again.
  • the suction air flow enters through the suction mouth 10 of the suction head 9 in the small suction device 1. Through a guide channel 11, the air flow reaches a manifold 12, where it is deflected downwards.
  • FIG. 2 an inventive vacuum cleaner 28 is shown, which is designed as a stick sucker 29 as a combination of Stielsaugerrahmen 16 and inserted small suction 1.
  • the Stielsaugerrahmen has an enveloping body 17 and at its front end an intake manifold 18 to which, for example, a suction nozzle, not shown, or a floor brush is connected.
  • the incoming through the intake manifold 18 suction air flow is guided by air guidance into a rear region of the envelope 17, where it is deflected by deflection 19 in the tangential direction and guided inwards.
  • a handle connection 20 for receiving a rod, which carries a handle for using the vacuum cleaner as a teat sucker (not shown), is arranged.
  • a small suction 1 is inserted into the enveloping body 17 of the Stielsaugerrahmens 16.
  • the small vacuum cleaner 1 is inserted so far from the rear end of the Stielsaugerrahmens 16 in the enveloping body 17 that the suction mouth 10 rests against a foam seal 21 and thereby is closed.
  • the air flow is conveyed by the impeller through the exhaust port 22 of the small sucker 1 to the outside.
  • the vacuum cleaner fan 3 has a particularly large inlet opening 7. As a result, a particularly low aerodynamic resistance is achieved, whereby the suction air flow can be increased.
  • FIG. 3a an embodiment of a conventional impeller 6 is shown in the prior art.
  • FIG. 3b an inventive impeller 6 with a particularly large circular surface 23 of the curved disk 27, which is designed wing-free.
  • the conventional impeller 6 in FIG. 3a has nine wings 24, while the impeller 6 according to the invention in FIG. 3b includes thirteen wings 24.
  • the inclination angle of the wings 24 with respect to the radius of the impeller 6 has been increased.
  • the impeller in Fig. 3 also has a cover plate 25, in which an opening 26 is introduced.
  • air is passed from a suction head 9 into the interior of the vacuum cleaner 28, where the air is sucked through a filter system 8 and flows through a particularly large inlet opening 7 on the impeller 6 of the vacuum cleaner fan 3, from which they radially is transported to the outside and finally discharged through exhaust openings 22 back into the environment.
  • the invention has the advantage that a particularly efficiently designed vacuum cleaner 28 can be provided. This is achieved by the impeller 6 according to the invention and the vacuum cleaner fan 3 according to the invention.
  • the aerodynamic resistance in the vacuum cleaner 28 is reduced by the invention, so that the same suction air flow can be realized by a lower fan power.
  • a higher suction air flow can be effected by an unchanged blower power and thus the suction result can be improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP13174236.3A 2012-06-29 2013-06-28 Ventilateur d'aspirateur et aspirateur doté d'un ventilateur d'aspirateur Ceased EP2679828A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012211250.2A DE102012211250A1 (de) 2012-06-29 2012-06-29 Staubsaugergebläse und Staubsauger mit einem Staubsaugergebläse

Publications (2)

Publication Number Publication Date
EP2679828A2 true EP2679828A2 (fr) 2014-01-01
EP2679828A3 EP2679828A3 (fr) 2017-08-16

Family

ID=48699630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13174236.3A Ceased EP2679828A3 (fr) 2012-06-29 2013-06-28 Ventilateur d'aspirateur et aspirateur doté d'un ventilateur d'aspirateur

Country Status (2)

Country Link
EP (1) EP2679828A3 (fr)
DE (1) DE102012211250A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107233043A (zh) * 2017-04-11 2017-10-10 亚诺思·朱飗飔·施隼 一种微型涡旋离心分离真空除尘装置
WO2019109278A1 (fr) * 2017-12-06 2019-06-13 Husqvarna Ab Soufflante à équilibre et construction améliorés

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019213780A1 (de) * 2019-09-11 2021-03-11 Robert Bosch Gmbh Am Körper getragene Stauberfassungsvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486539B1 (fr) 1989-08-10 1994-03-02 Metrax GmbH Ventilateur a moteur electrique
US6442792B1 (en) 1999-01-29 2002-09-03 Hitachi, Ltd. Vacuum cleaner
DE10148510C1 (de) 2001-10-01 2003-06-18 Bsh Bosch Siemens Hausgeraete Dichtung zum Einsatz in einer Gebläseanordnung
EP1455094A1 (fr) 2003-03-04 2004-09-08 Ziehl-Abegg AG Roue ventilateur radial
EP2000070A2 (fr) 2007-06-07 2008-12-10 Kabushiki Kaisha Toshiba Ventilateur électrique et aspirateur électrique l'utilisant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR974729A (fr) * 1947-11-07 1951-02-26
KR960703203A (ko) * 1994-04-28 1996-06-19 시게후치 마사토시 다익(多翼) 레이디얼 팬의 설계 방법 및 그 다익 레이디얼 팬(multivane radial fan designing method and multivane radial fan)
KR100645380B1 (ko) * 2005-09-09 2006-11-14 삼성광주전자 주식회사 감속비를 이용하는 브러시 모터를 구비한 진공청소기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486539B1 (fr) 1989-08-10 1994-03-02 Metrax GmbH Ventilateur a moteur electrique
US6442792B1 (en) 1999-01-29 2002-09-03 Hitachi, Ltd. Vacuum cleaner
DE10148510C1 (de) 2001-10-01 2003-06-18 Bsh Bosch Siemens Hausgeraete Dichtung zum Einsatz in einer Gebläseanordnung
EP1455094A1 (fr) 2003-03-04 2004-09-08 Ziehl-Abegg AG Roue ventilateur radial
EP2000070A2 (fr) 2007-06-07 2008-12-10 Kabushiki Kaisha Toshiba Ventilateur électrique et aspirateur électrique l'utilisant

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Noise reduction in centrifugal fans: A literature survey", JOURNAL OF SOUND AND VIBRATION, vol. 45, no. 3, 1976, pages 375 - 403
EPPLE, P. ET AL.: "Design of radial impellers: a combined extended analytical and numerical method", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS, PART C: JOURNAL OF MECHANICAL ENGINEERING SCIENCE, vol. 223, 2009, pages 901 - 917

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107233043A (zh) * 2017-04-11 2017-10-10 亚诺思·朱飗飔·施隼 一种微型涡旋离心分离真空除尘装置
CN107233043B (zh) * 2017-04-11 2019-10-29 亚诺思·朱飗飔·施隼 一种微型涡旋离心分离真空除尘装置
WO2019109278A1 (fr) * 2017-12-06 2019-06-13 Husqvarna Ab Soufflante à équilibre et construction améliorés
US11540455B2 (en) 2017-12-06 2023-01-03 Husqvarna Ab Blower with improved balance and construction

Also Published As

Publication number Publication date
EP2679828A3 (fr) 2017-08-16
DE102012211250A1 (de) 2014-01-02

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