EP3450766A1 - Ventilateur pour un appareil electrique - Google Patents

Ventilateur pour un appareil electrique Download PDF

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Publication number
EP3450766A1
EP3450766A1 EP18190162.0A EP18190162A EP3450766A1 EP 3450766 A1 EP3450766 A1 EP 3450766A1 EP 18190162 A EP18190162 A EP 18190162A EP 3450766 A1 EP3450766 A1 EP 3450766A1
Authority
EP
European Patent Office
Prior art keywords
blower
ribs
impeller
electric motor
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.)
Pending
Application number
EP18190162.0A
Other languages
German (de)
English (en)
Inventor
Alexander Flegler
Tobias Hofmann
Dieter Manger
Christian Scheler
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3450766A1 publication Critical patent/EP3450766A1/fr
Pending 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
    • F04D29/40—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • 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
    • F04D29/4253—Fan casings with axial entry and discharge
    • 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
    • F04D29/444—Bladed diffusers

Definitions

  • the present invention relates to a blower for an electrical appliance, in particular for a vacuum cleaner.
  • a blower according to the present invention is a machine that promotes air by means of a rotating impeller in a housing.
  • a pressure ratio of between 1.3 and 3 can be achieved between the suction side and the pressure side.
  • the publication KR 10 2016 0 019 140 A discloses a fan having spirally extending ribs which protrude from an inside of an associated fan cowl. By such a blower high suction power to be achieved.
  • the blower according to the invention comprises an electric motor and an impeller mounted on the shaft of the electric motor for conveying air from an impeller inlet to at least one impeller outlet.
  • the at least one impeller outlet is basically at the periphery of the impeller.
  • the blower includes a blower hood.
  • the blower according to the invention succeeds by at least one rib which protrudes from the inside of the fan shroud and which is arranged opposite the impeller outlet.
  • the at least one rib is therefore basically located between the periphery of the impeller and a lateral wall portion of the fan shroud. Since the at least one rib is provided on the inside of the fan shroud, this is therefore inwardly from.
  • the impeller in the context of the present invention is a component which rotates during operation and thereby causes the air flow aimed at with the fan. Air generally exits the impeller laterally via one or more impeller outlets. The flow direction of the air then runs basically perpendicular or at least substantially perpendicular to the shaft of the electric motor.
  • the impeller is in particular as described in the introduction to the description.
  • the fan shroud is used to redirect air and in principle in the direction of the electric motor.
  • Such Gebläsehaube for deflecting air is a component which deflects during operation of this air flowing in the direction Gebläsehaube air and in particular by 90 ° or at least substantially 90 °.
  • the fan shroud thus the flow direction of the air is changed.
  • air generally flows at least substantially parallel to the shaft of the electric motor or has at least one flow component parallel to the shaft of the electric motor.
  • the air can thus also flow, for example, helically around the shaft of the electric motor after the deflection by the fan shroud and therefore has a flow component parallel to the shaft of the electric motor.
  • the fan shroud is shaped like a hood, except for an opening for entry of air, and is airtight in an operable condition, or at least substantially impermeable to air.
  • the opening provided for entry of air is arranged so that air can flow through the opening in the direction of impeller inlet.
  • the fan shroud basically has an upper wall area and adjoining it a laterally encircling wall area.
  • the upper wall portion may be designed lid-shaped. This can be flat, curved or even conical.
  • the lateral wall area can be cylindrical. However, the lateral wall region can also be a polygon in cross section, that is, for example, square.
  • the lateral wall portion may have wall portions which are arranged around the impeller and whose cross-sections are rectilinear. In cross-section so then the lateral wall area is not circular as in a cylindrical shape. Instead, the cross section may then be, for example, pentagonal, hexagonal, heptagonal or octagonal, and thus merely approximate
  • the upper wall portion of the fan shroud comprises the opening provided for entry of air.
  • the impeller is surrounded by the lateral wall area.
  • the impeller is thus located within the lateral wall area of the fan shroud.
  • the two mentioned wall portions of the fan cover deflect during operation from the impeller air exiting, and in principle in the direction of the electric motor.
  • a rib for deflecting air in the direction of the electric motor in the context of the present invention is a planar component. This stands from the inside of the fan hood. This means that it extends from the inside of the fan shroud towards the interior of the fan shroud. Each rib basically extends over a relatively short portion of a wall portion of the fan shroud. Each rib is arranged on the fan hood and thus in the area of the air deflection and therefore influences the flow of air during this air deflection.
  • the at least one rib is held in an advantageous embodiment by the fan shroud, that is indirectly or directly attached to the fan shroud, so attached.
  • the at least one rib then adjoins particularly closely, preferably airtight, against a lateral wall region of the fan shroud. This further improves a noise reduction.
  • the at least one rib is held in a structurally simple manner.
  • the at least one rib projects perpendicularly or at least substantially perpendicularly from a lateral wall region of the fan shroud and / or extends perpendicularly or at least substantially perpendicularly to it Shaft of the electric motor. This achieves a low noise level in a particularly suitable manner.
  • the one or more ribs run preferably in the manner of a section of a helix.
  • the one or more ribs run in particular like the section of a helix, when the lateral wall region of the fan shroud is cylindrical in cross section.
  • the one or more ribs can also be straightforward, for example. This is the case in particular when the lateral wall area of the fan shroud is a polygon in cross-section and the wall sections between two corners are rectilinear in cross-section.
  • the one or more ribs close with a plane which is perpendicular to the shaft of the electric motor, preferably an angle between 0 ° and 90 °, more preferably between 5 ° and 80 °, a.
  • the ribs thus preferably extend obliquely to the said plane to reduce noise with little technical effort, without having to increase the space of such a fan. It is also possible for each rib to be parallel to the shaft of the electric motor and thus to subtend a right angle with the plane. To prefer is however an oblique course.
  • the angle between a plane which forms a right angle with the shaft of the electric motor and a rib is less than 45 °, particularly preferably less than 30 ° and / or preferably greater than 10 °, preferably greater than 20 °.
  • the angle is 20 ° or 25 °.
  • the number of ribs is greater than or equal to the number of subsequent openings of a distributor, through which air passes to the electric motor.
  • These openings basically have an extension direction parallel or at least substantially parallel to the shaft of the electric motor.
  • the at least one rib preferably adjoins a base of the distributor, which preferably leads in the form of a ramp to an aforementioned opening of the distributor, through which Air reaches the electric motor.
  • the direction of extension of vanes of the impeller in the region of the periphery of the impeller with the lateral wall region of the fan basically forms an acute angle.
  • the one or more ribs run in the manner of a spiral on the upper or lower wall area of the fan cowl too. In the case of a plurality of ribs, these are in principle distributed uniformly around the impeller without ribs then overlapping, for example, in sections. The ribs are basically arranged one behind the other.
  • the one or more ribs are made of plastic, preferably of a thermoplastic material.
  • ribs which are part of an integrally manufactured component which comprises an annular region.
  • This component is therefore also called annular component.
  • the annular member including its ribs is manufactured and in particular by an injection molding process.
  • the ends of the ribs are preferably connected together to avoid vibrations and to improve the stability.
  • the outer diameter of the annular component corresponds to the inner diameter of the lateral wall region of the fan shroud, thus providing a tight connection between the fan shroud in a structurally simple manner and to provide the ribs. This also improves the stability and avoids disadvantageous vibrations of the ribs during operation.
  • Air is deflected by the hood and the one or more ribs, in particular by approximately 90 °.
  • a deflection of about 90 ° in the sense of the present invention is at least present when at least one component of the air flow has been deflected by about 90 °.
  • the component of the air flow runs in particular parallel to the shaft of the electric motor.
  • the air flow can therefore also run obliquely to the shaft of the electric motor. It is essential in this embodiment, only that the flow of air in components, ie flow directions, disassemble that after the deflection of a component is parallel to the shaft of the electric motor, so air flows from the fan hood along the shaft of the electric motor.
  • the annular component has upwardly projecting one or more webs, which are guided through holes provided in the upper wall region of the fan shroud. After passage, the upwardly projecting webs are preferably flattened, so as to connect the annular member with the fan cover form fit. By plating the webs have been broadened outside the fan hood. The widened area of the webs is basically close to the fan shroud. It is thus created a reliable and permanent positive connection between the annular member and the fan cover in a suitable manner.
  • the flattening succeeds with low pressure and thus in a particularly simple way by supplying heat when the annular component consists of a thermoplastic material.
  • the annular, one or more ribs comprising component may be glued to the fan cover and / or pressed into the fan shroud.
  • ribs In order to be able to effect a deflection of air in the direction of the electric motor in a manner which is particularly suitable for noise reduction, there are a plurality of ribs, preferably at least six ribs, particularly preferably at least eight ribs.
  • the ribs are evenly distributed annularly around the periphery of the impeller. Basically, the ribs do not overlap.
  • the ribs are the same size and arranged at the same height around the impeller around.
  • the one or more ribs are fastened by riveted joints on the fan shroud.
  • the fan shroud for reasons of stability, preferably consists of metal, for example aluminum or an iron alloy.
  • the ribs may also consist of metal for reasons of stability, in order to avoid vibrations of the ribs.
  • the air is forwarded in the direction of the electric motor via one or more further ribs following the air deflection effected by the fan shroud.
  • the one or more further ribs preferably form the bottom of depressions.
  • These ribs extend in a manner comparable in particular to the ribs projecting from the fan shroud, ie in particular likewise like the section of a helix and / or obliquely to a plane which coincides with the shaft of the electric motor includes right angle.
  • These further ribs are then inclined in the same way and in the same direction as the ribs projecting from the fan shroud. These ribs widen preferably in the direction of the electric motor.
  • Each rib of the fan shroud preferably has one end adjacent one end of a rib forming a bottom of a recess.
  • the properties of the fan can be further improved.
  • the ribs forming a bottom of a depression are part of the nozzle.
  • the invention further relates to a blower hood for a claimed blower having an upper wall portion having a preferably centrally located opening for an inlet of air and a side wall portion connected therewith having ribs attached to the inside of the side wall portion along the annular side wall portion are evenly distributed and each run like a section of a coil.
  • This cap makes it possible to retrofit already existing blower in a technically very simple way, in which this fan cover is simply replaced with the existing fan shroud. As a result, noise reduction measures can be subsequently taken with already existing blowers. An additional structural change is not required.
  • This fan shroud is preferably designed as described in the present application.
  • the ribs on the inside are fastened by riveted joints or there is a one-piece, preferably made of plastic annular member with the attached ribs, which is connected to the fan shroud.
  • the blower according to the invention is installed in particular in a vacuum cleaner.
  • the present invention makes it possible, with simple structural and inexpensive means, to provide a fan with low noise. By the preferred embodiments, these properties can be further improved.
  • FIG. 1 shows a blower 1 with an electric motor 2.
  • a plastic component of a nozzle has an upper annular portion 3 and four of them below projecting webs 4 on. This component is also referred to below as annular member with protruding webs.
  • the webs 4 are connected by screws with the electric motor 2.
  • a metal bellows cover 30 (see Figures 5 and 7 ) includes a lateral, cylinder-like wall portion 5 and an upper, lid-shaped wall portion 6.
  • the upper wall portion 6 includes an opening 7 for entry of air.
  • a lower portion 8 of the lateral wall portion 5 surrounds the upper annular portion 3 of the plastic component and is tight, in particular frictionally engaged on this annular portion 3.
  • the lower portion 8 may be bonded to the annular portion 3, for example.
  • the component made of plastic with the annular portion 3 thus connects the fan cover 30 with the electric motor. 2
  • the metal bellows cover 30 is connected to a cuff 9 made of rubber.
  • the rubber boot 9 makes it possible to connect the blower 1 suitably with an opening inside a device through which air is to be sucked.
  • the device is in particular a vacuum cleaner.
  • Another plastic component having an annular portion with ribs attached thereto has webs 10 projecting upwardly from the annular portion and passing through the upper wall portion 6 of the fan shroud. These webs 10 are flattened on the top to positively connect the annular member attached thereto ribs with the fan cover 30.
  • the cap 11 has four webs 12, which are also connected to the already mentioned screws with the electric motor 2.
  • FIG. 2 is a longitudinal section through the in the FIG. 1 shown blower 1 shown.
  • the shaft 13 of the electric motor 2 can be seen, which is connected to an impeller 14, 15, 16.
  • the impeller comprises a front metal cover plate 14 and a There is a gap between the two cover plates 14 and 15, are mounted in the existing metal wings 16. About riveting the wings 16 with the two cover plates 14 and 15 are connected. Adjacent wings 16 form air channels.
  • the front cover plate 14 has an impeller inlet 17 in the center. Impeller air outlets 18 are provided along the periphery of the impeller 14, 15, 16, ie along the outer edge of the impeller 14, 15, 16. Rotates the impeller 14, 15, 16, as intended, so air flows into the impeller inlet 17, from here through the air ducts through and radially outward to the impeller outlet 18. Subsequently, the air with the help of the fan cover 30 in the direction of electric motor 2 diverted.
  • ribs 19 Adjacent to the periphery of the impeller 14, 15, 16, so adjacent to the impeller outlet 18, ribs 19 are present.
  • the number of ribs 19 is equal to the number of subsequently-mentioned openings 23 of the distributor.
  • the ribs 19 are part of an integrally manufactured, made of plastic component, which comprises an annular region 20.
  • the ribs 19 are substantially perpendicular from the annular region 20. Seen from the wall region 5, the ribs 19 extend in the direction of the shaft 13. This direction of extension includes a right angle with the shaft 13.
  • Each rib 19 extends in accordance with a portion of a helix, that is curved, from below to obliquely above and along the inner wall of the annular portion 20.
  • the ribs 19 extend inclined with respect to a plane perpendicular to the shaft 13 level. The angle between the ribs 19 and this plane is 25 °.
  • the outer diameter of the annular region 20 corresponds to the adjoining inner diameter of the fan shroud 30, so that the annular region 20 bears tightly against the corresponding wall region of the fan shroud 30.
  • the ribs 19, together with the fan shroud 30, cause air emerging from the air wheel outlets 18 to be deflected by approximately 90 ° in the direction of the electric motor 2.
  • the ribs 19 are arranged in the region of this air deflection.
  • the ribs 19 are the same size and designed and run in the same way.
  • FIG. 2 a cylindrical collar 21 of the fan shroud 30 is seen, which extends into the existing rubber cuff 9, so as to secure the sleeve 9 to the fan shroud 30.
  • the recesses are open towards the top of the fan cover 30 and also each have an opening 23 laterally through which air can flow in the direction of the electric motor.
  • the base 24 of the recesses 22 extends like the ribs 19 as a section of a helix. This formed by one rib base 24 and the recess 22 widened in plan view of the base 24 seen in the direction of opening 23.
  • the annular member 3 with the openings 23 is preferably made in one piece and is called diffuser.
  • the annular member 3 with the protruding webs 4, so the nozzle, has two web-shaped brackets 25 for brushing the electric motor 2.
  • curved ribs 19 are introduced, which are bent in the axial and / or radial direction to the openings 23 of the distributor.
  • the number of these ribs 19 is greater than or equal to the number of openings 23, is subsequently forwarded by the air in the direction of electric motor 2. If the number of ribs 19 is equal to the number of openings 23, then the starting point of a rib 19 at the nearest edge 4, from which a base 24 leads to an opening 23.
  • number of ribs 19 is equal to the number of openings 23, represents a particularly advantageous embodiment.
  • impeller outlet 18 and rib 19 should be chosen as small as possible. The limit lies in the component and manufacturing tolerances.
  • FIGS. 3 and 4 illustrate the structure of the fan shroud 30 in conjunction with a one-piece made of plastic component, which comprises an annular region 20 and eight ribs 19.
  • This component is therefore also called annular member 20 with ribs 19.
  • the annular member 20 is produced including its ribs 19 and in particular by an injection molding process.
  • the outer diameter of the annular member 20 with the webs 19 corresponds to the inner diameter of the lateral wall portion 5 of the fan shroud 30 so as to provide a tight connection between the fan shroud 30 and the ribs 19 in a structurally simple manner. This is in the FIG. 4 shown.
  • the ribs 19 are arranged one behind the other around the impeller around and do not overlap in supervision on the Gebläsehaube seen.
  • gaps 26 in the lateral edge region, which adjoin the ribs 19 and preferably as in the FIG. 5 shown are triangular.
  • the FIG. 5 makes it clear that the area 8 of the fan shroud is preferably offset outwards relative to the remaining lateral wall area of the fan shroud 30 so as to be able to connect the fan shroud in a particularly reliable and suitable manner with the other fan components.
  • the individual ribs 19 are in this embodiment with the adjacent ribs 19 at the top (to the air inlet) connected to each other to improve the stability. Also, the individual ribs 19 are connected to the adjacent ribs 19 at the bottom (towards the air outlet) with each other to improve the stability and to avoid vibrations of ribs.
  • FIGS. 5 and 6 show another embodiment in which metal ribs 19 are connected via riveted joints 27 with the fan cover 30. These ribs 19 overlap when viewed on top of the fan cowl. Like in the FIG. 7 can be seen, the lateral wall portion 5 of the fan shroud slots 28. Through these slots 28 projections 29 of the ribs 19 are inserted therethrough to connect by means of riveted ribs 19 with the inside of the lateral wall portion 5.
  • Both in the case of FIGS. 4 and 5 as well as in the case of FIGS. 6 and 7 The ribs run like a section of a spiral. Both the ribs 19 and the base 24 form an angle between 20 ° and 25 ° with a plane perpendicular to the shaft 13 of the electric motor 2.
  • the invention provides a low-noise blower without having to operate an excessively high technical production effort or having to provide a large installation space.
  • Experiments and comparative experiments have shown that a significant reduction in noise, in particular in the frequency range between approximately 1500 Hz and approximately 3000 Hz, succeeds in the partial load operation of the blower.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP18190162.0A 2017-08-31 2018-08-22 Ventilateur pour un appareil electrique Pending EP3450766A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017215261.3A DE102017215261B4 (de) 2017-08-31 2017-08-31 Gebläse für ein elektrogerät

Publications (1)

Publication Number Publication Date
EP3450766A1 true EP3450766A1 (fr) 2019-03-06

Family

ID=63363932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18190162.0A Pending EP3450766A1 (fr) 2017-08-31 2018-08-22 Ventilateur pour un appareil electrique

Country Status (2)

Country Link
EP (1) EP3450766A1 (fr)
DE (1) DE102017215261B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020113968A1 (de) 2020-05-25 2021-11-25 ebm-papst AB Gebläsevorrichtung und Gebläseeinheit mit der darin angeordneten Gebläsevorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019123692A1 (de) * 2019-09-04 2021-03-04 Bayerische Motoren Werke Aktiengesellschaft Luftführung für einen Abgasturbolader

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1160136A (en) * 1965-08-02 1969-07-30 Nordisk Ventilator Improvements in and relating to a Radial-Flow Fan with Axial Exhaust
GB2048382A (en) * 1979-04-23 1980-12-10 Vortice Elettrosociali Spa Fan unit particularly for extractor hoods
EP0602007A2 (fr) 1990-07-20 1994-06-15 Hitachi, Ltd. Soufflante et diffuseur d'aspirateur
DE29717906U1 (de) 1997-10-08 1999-02-04 BSH Bosch und Siemens Hausgeräte GmbH, 81669 München Gebläse
EP1618821A2 (fr) * 2004-07-20 2006-01-25 LG Electronics, Inc. Soufflante centrifuge et aspirateur comportant une telle soufflante centrifuge
US20120186036A1 (en) * 2011-01-25 2012-07-26 Kegg Steven W Diffuser for a vacuum cleaner motor-fan assembly
DE102012211252A1 (de) 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugergebläsedichtung und Staubsauger mit einer Staubsaugergebläsedichtung
DE202014102289U1 (de) * 2014-05-15 2014-06-04 Yu-Pei Chen Umleitungsvorrichtung für ein Zentrifugalschaufelrad
WO2014177846A1 (fr) * 2013-05-03 2014-11-06 Dyson Technology Limited Compresseur
KR20150075008A (ko) * 2013-12-24 2015-07-02 삼성전자주식회사 청소기
DE102014208128A1 (de) 2014-04-30 2015-11-05 BSH Hausgeräte GmbH Radialgebläse mit verbesserter Überströmkantengeometrie
KR20160000191A (ko) 2014-06-24 2016-01-04 류동기 탈 부착식 간판 설치 구조
DE102016109018A1 (de) 2015-05-21 2016-11-24 Johnson Electric S.A. Einphasiger Motor, Luftstromerzeugungsvorrichtung und Elektrogerät

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Publication number Priority date Publication date Assignee Title
CN103080558B (zh) * 2010-09-03 2016-08-10 双城风机有限公司 管状内嵌式排气风扇组件
KR102274393B1 (ko) * 2014-08-11 2021-07-08 삼성전자주식회사 진공청소기

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1160136A (en) * 1965-08-02 1969-07-30 Nordisk Ventilator Improvements in and relating to a Radial-Flow Fan with Axial Exhaust
GB2048382A (en) * 1979-04-23 1980-12-10 Vortice Elettrosociali Spa Fan unit particularly for extractor hoods
EP0602007A2 (fr) 1990-07-20 1994-06-15 Hitachi, Ltd. Soufflante et diffuseur d'aspirateur
DE29717906U1 (de) 1997-10-08 1999-02-04 BSH Bosch und Siemens Hausgeräte GmbH, 81669 München Gebläse
EP1618821A2 (fr) * 2004-07-20 2006-01-25 LG Electronics, Inc. Soufflante centrifuge et aspirateur comportant une telle soufflante centrifuge
US20120186036A1 (en) * 2011-01-25 2012-07-26 Kegg Steven W Diffuser for a vacuum cleaner motor-fan assembly
DE102012211252A1 (de) 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugergebläsedichtung und Staubsauger mit einer Staubsaugergebläsedichtung
WO2014177846A1 (fr) * 2013-05-03 2014-11-06 Dyson Technology Limited Compresseur
KR20150075008A (ko) * 2013-12-24 2015-07-02 삼성전자주식회사 청소기
DE102014208128A1 (de) 2014-04-30 2015-11-05 BSH Hausgeräte GmbH Radialgebläse mit verbesserter Überströmkantengeometrie
DE202014102289U1 (de) * 2014-05-15 2014-06-04 Yu-Pei Chen Umleitungsvorrichtung für ein Zentrifugalschaufelrad
KR20160000191A (ko) 2014-06-24 2016-01-04 류동기 탈 부착식 간판 설치 구조
DE102016109018A1 (de) 2015-05-21 2016-11-24 Johnson Electric S.A. Einphasiger Motor, Luftstromerzeugungsvorrichtung und Elektrogerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020113968A1 (de) 2020-05-25 2021-11-25 ebm-papst AB Gebläsevorrichtung und Gebläseeinheit mit der darin angeordneten Gebläsevorrichtung

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DE102017215261B4 (de) 2020-12-24
DE102017215261A1 (de) 2019-02-28

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