EP3116366A1 - Ventilateur d'aspirateur - Google Patents

Ventilateur d'aspirateur

Info

Publication number
EP3116366A1
EP3116366A1 EP15709193.5A EP15709193A EP3116366A1 EP 3116366 A1 EP3116366 A1 EP 3116366A1 EP 15709193 A EP15709193 A EP 15709193A EP 3116366 A1 EP3116366 A1 EP 3116366A1
Authority
EP
European Patent Office
Prior art keywords
bearing
ball bearing
damping element
outer ring
motor shaft
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Withdrawn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
EP15709193.5A
Other languages
German (de)
English (en)
Inventor
Dieter Manger
Marie-Christin DIETZ
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 EP3116366A1 publication Critical patent/EP3116366A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/059—Roller bearings
    • 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
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2314/00—Personal or domestic articles, e.g. household appliances such as washing machines, dryers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/08—Elastic or yielding bearings or bearing supports, for exclusively rotary movement primarily for axial load, e.g. for vertically-arranged shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
    • F16C33/7856—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race with a single sealing lip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring

Definitions

  • the invention relates to a vacuum cleaner fan, which comprises a housing, an electric motor with a motor shaft and a fan wheel, which is arranged on the motor shaft, wherein the motor shaft with two axially spaced ball bearings is rotatably mounted relative to the housing and wherein an inner ring of a first ball bearing fixed connected to the motor shaft.
  • the shaft of a fan of a blower is mounted at its two ends each with a bearing, wherein the shaft has spirally arranged grooves which suck air through holes in the bearing, so that causes an air bearing in the radial direction becomes.
  • the front end of the shaft is formed with a spherical surface and is in point contact with the center of an end surface of the bearing.
  • a rotor assembly of a motor comprises a rotor arranged on a shaft, the shaft each having a bearing at its two ends.
  • the bearings are mounted with O-rings in a stator assembly, with the O-rings located on the outside of the bearing or a bearing housing rigidly connected to the bearing. This allows the rotor assembly to rotate above its center of mass above a critical speed.
  • the known bearing assemblies are not optimal when used in a vacuum cleaner fan, in particular with regard to the rigidity and durability of the bearing as well as with respect to the vibration transmission to the housing and the structure-borne sound caused thereby.
  • An inventive vacuum cleaner fan comprises a housing which can be fixedly mounted in a vacuum cleaner housing or, for example, is a part of the vacuum cleaner housing or can be integrated in this.
  • the vacuum cleaner fan serves to generate a suction air flow and generates for this purpose in particular a negative pressure.
  • the housing may include means for guiding the suction air flow.
  • the vacuum cleaner fan further includes an electric motor having a motor shaft carrying a rotor.
  • the vacuum cleaner fan further includes a driven by the electric motor fan, which is in particular fixedly mounted on the motor shaft and which is designed to generate the suction air flow or the negative pressure.
  • the motor shaft is mounted in two ball bearings, which are axially spaced from each other.
  • a first ball bearing is arranged in an end region of the motor shaft in which the fan wheel is fastened, and a second ball bearing in an end region of the motor shaft opposite this end.
  • the first ball bearing comprises an inner ring and an outer ring, between the rolling elements, in particular balls, are mounted.
  • the ball bearing is preferably designed as a deep groove ball bearing.
  • the inner ring of the first ball bearing is firmly connected to the motor shaft and sits without play on this.
  • the inner ring may for example be firmly connected to the motor shaft by gluing or by a play-free fit.
  • the outer ring of the first ball bearing is supported on an axial outer surface via an elastic damping element in a bearing seat connected to the housing.
  • the outer ring is supported in the axial direction against a surface of the bearing seat or held in the axial direction via the elastic damping element.
  • the bearing seat may be formed directly in the housing or formed by a component connected to the housing, such as a guide for guiding the air flow generated by the fan.
  • the outer ring of the first ball bearing is mounted with radial play in the bearing seat, that a radial outer surface of the outer ring of the first ball bearing is arranged without contact with the bearing seat. In the radial direction, i. in a plane which is perpendicular to the longitudinal axis of the motor shaft, the first ball bearing is thus freely movable or elastically held only on the fitting on the axial outer surface of the outer ring elastic damping element.
  • the center of mass is the center of mass and the center of gravity of the rotor, which includes the motor shaft and the rotor, and the other firmly connected to the motor shaft and co-rotating components, ie in particular the fan and the inner rings of the ball bearings.
  • the critical speed may be, for example, about 20,000 1 / min, with a speed of, for example, up to 60,000 1 / min can be achieved in operation.
  • a high smoothness of the vacuum cleaner fan can be achieved in this way, whereby the coupling of structure-borne noise is further reduced in the housing.
  • the first ball bearing is arranged close to that end of the motor shaft which carries the fan, and a second ball bearing is arranged on the opposite end of the fan wheel of the motor shaft, wherein an inner ring of the second ball bearing fixed to the motor shaft and a Outer ring of the second ball bearing is firmly connected to the housing.
  • the inner ring may for example be glued to the motor shaft or fixed with a play-free fit on this, and the outer ring may in particular be glued to a further bearing seat of the housing.
  • the second ball bearing exerts an axially directed force on the motor shaft, through which the outer ring of the first ball bearing is pressed against the elastic damping element and / or this is pressed against the bearing surface of the bearing seat.
  • the first ball bearing is loaded in the axial direction such that the elastic damping element is held between a bearing surface of the bearing seat and the axial outer surface of the outer ring of the first ball bearing.
  • the axial fixing of the storage is further improved.
  • this increases the static friction between the outer ring of the first ball bearing or the bearing seat and the elastic damping element, whereby sliding friction, which could occur due to the radial mobility of the outer ring, is reliably avoided.
  • the durability of the storage can be further increased.
  • the vacuum cleaner fan in particular the fan and a nozzle of the housing, is designed such that when the fan is driven to generate a negative pressure, this exerts an axial force on the motor shaft through which the outer ring of the first ball bearing to the elastic damping element and this is pressed into the bearing seat or on the bearing surface.
  • the axial position of the motor shaft is set more precisely and increases the static friction between the elastic damping element and the outer ring of the first ball bearing or the bearing surface, whereby the durability is improved.
  • the employment of the first and the second ball bearing and the negative pressure generated by the fan to increase the pressing force exerted by the outer ring of the first ball bearing on the damping element together.
  • the axial outer side of the outer ring of the first ball bearing is in this case the fan wheel facing side of the outer ring, and the employment of the ball bearing corresponds to an O-employment. As a result, the durability can be further increased.
  • the elastic damping element is designed such that it allows an axial and a radial movement of the outer ring of the first ball bearing relative to the bearing seat.
  • the elastic damping element is so elastic formed so that even if the outer ring of the first ball bearing bears with its axial outer side fixed to one side of the elastic damping element and the elastic damping element bears with its other side fixed to a bearing surface of the bearing seat, a radial movement of the outer ring relative to the bearing seat can take place ,
  • the solid concerns of the damping element on the bearing surface or on the axial outer side of the outer ring can be achieved by cohesive, positive and / or non-positive connection.
  • the elastic damping element is formed as a disc which is arranged between the axial outside, in particular between an axial end wall of the outer ring or a sealing disc of the first ball bearing, and a bearing surface of the bearing seat.
  • the elastic damping element may be formed as a separate component.
  • the elastic damping element can be connected to the outer ring, for example, adhered to the axial outer side of the outer ring or on a sealing disc connected thereto. As a result, the assembly of the bearing assembly is facilitated in such a way that the motor shaft can be used with the seated on this first ball bearing and connected to the outer ring of the first ball bearing elastic damping element in the bearing seat.
  • the elastic damping element is integrally formed on a sealing disc of the first ball bearing.
  • the sealing disc is fixedly connected to the outer ring of the first ball bearing and may consist of an elastic material or be coated by such. Because of that the elastic Damping element is formed integrally with the sealing disc, the manufacture and assembly of the elastic damping element are further simplified.
  • the elastic damping element is flush with the outside of the outer ring of the first ball bearing or projects beyond it.
  • a particularly simple assembly can thereby be made possible, wherein at the same time when inserting the first ball bearing in the bearing seat centering, which ensures that the outer side of the outer ring does not touch the bearing seat.
  • a flush with the outer side of the outer ring design of the elastic damping element is preferred when the bearing seat is formed frusto-conical, wherein the outer diameter of the elastic damping element corresponds approximately to the inner diameter of the cone in the area of this final bearing surface. That the elastic damping element projects beyond an axial extension of the outer side of the outer ring is preferred when the bearing seat is cylindrical.
  • the outer diameter of the elastic damping element substantially corresponds to the inner diameter of the cylinder.
  • the elastic damping element is designed in particular as an annular disc with a rectangular, round or semicircular cross-sectional shape.
  • the elastic damping element may have a profiled surface, which in particular forms elevations, such as nubs, points or points.
  • the axial outer surface of the outer ring or the surface of the bearing surface of the bearing seat can be profiled.
  • the elastic damping element on one or both sides of a profiled surface which corresponds to a profiled surface of the bearing surface of the bearing seat and / or the outer side of the outer ring, so that elevations of one surface in depressions of the other can be used.
  • the correct position assembly of the elastic damping element or provided with this ball bearing facilitates and centering causes and the frictional engagement can be further improved.
  • FIG. 1 a and 1 b shows a part of a vacuum cleaner fan according to the prior art in a partially sectioned view, wherein Figure 1 b shows an enlarged detail of Figure 1 a ..;
  • Fig. 2 shows a first embodiment of the invention in one of the Figure 1 b corresponding view.
  • Fig. 4 is a used in an A-bearing according to a third embodiment of the vacuum cleaner fan according to the invention ball bearing in a sectional view. Detailed description based on three embodiments
  • Fig. 1 a and 1 b is shown in schematic form a part of a vacuum cleaner fan according to a prior art.
  • the fan 1 which is designed to generate a negative pressure, is firmly seated on the motor shaft 2 of a drive motor, which further comprises the seated on the motor shaft 2 rotor 3, which cooperates with a not-shown stator of the motor.
  • the motor shaft 2 is mounted in the region of that end which carries the fan 1 in a first ball bearing 4, which is also referred to as A-bearing.
  • the opposite end of the motor shaft is mounted in a second ball bearing 5, which is referred to as B-bearing.
  • the first ball bearing 4 comprises an inner ring 6, which sits firmly on the motor shaft 2, and an outer ring 7, between which the balls 8 of the ball bearing are arranged in a cage.
  • the outer ring is held without play in the guide 9, which is fixedly connected to the housing, not shown, of the vacuum cleaner fan and which is designed to guide the air flow generated by the fan 1.
  • the second ball bearing 5 has an inner ring 10 and an outer ring 1 1, between which run in a cage, the balls 12 of the ball bearing.
  • the first and the second ball bearings 4, 5 are designed as deep groove ball bearings, wherein the grooves, in which the balls 8, 12 are guided, are not shown for the sake of simplicity.
  • the outer ring 1 1 of the second ball bearing 5 is loaded by a conical spring 13 to bias by a position of the second ball bearing 5 against the first ball bearing 4 this form of O-employment against each other, the force lines of action corresponding to the O-employment , In Fig. 1 a are indicated by dash-dotted lines. Thereafter, the outer ring 1 1 of the second ball bearing 5 is fixed in a bearing seat, not shown, of the housing by gluing.
  • the longitudinal axis of the motor shaft 2 is designated by the reference numeral 14.
  • the area of the first ball bearing 4 (A-bearing) according to the prior art shown in Fig. 1 a is shown enlarged in Fig. 1 b.
  • the inner ring 6 of the first Ball bearing 4 is between a stage 15 of the motor shaft 2 and a flange 16 which carries the fan 1 (see Fig. 1 a), fixed, in particular rotationally fixed and axially and radially clearance with a tight fit on the motor shaft 2 is placed.
  • the nozzle 9 has a bearing seat 17 which is formed by a perpendicular to the longitudinal axis of the motor shaft 2 stationary bearing surface 18 and a truncated cone bearing wall 19.
  • the outer ring 7 of the first ball bearing 4 is attached with its end wall 20, which forms an axial outer side of the outer ring 7, against the bearing surface 18. Between a radial outer side 21 of the outer ring 7 and the frusto-conical bearing wall 19 remains a wedge-shaped tapered gap 22 which is filled to fix the outer ring 7 in the bearing seat 17 of the nozzle 9 with adhesive.
  • FIG. 2 shows an embodiment of the invention in a representation corresponding to FIG. 1b.
  • an annular damping element 23 is inserted between the end wall 20 of the outer ring 7 of the first ball bearing 4 and the bearing surface 18 of the bearing seat 17.
  • the end wall 20 is therefore not directly on the bearing surface 18, but only on the damping element 23.
  • the first ball bearing is thus inserted radially loose or with a clearance fit in the bearing seat 17.
  • the gap 22 is wedge-shaped. Due to the O position of the bearings 4, 5, the outer ring 7 is pressed against the damping element 23 and this against the bearing surface 18. In this way, the damping element 23 can be held in its position without gluing. An additional contact force is created by the negative pressure generated by the fan 1 and by the force acting on the motor shaft 2 in the direction indicated by the arrow force is exerted.
  • the embodiment of the invention shown in Fig. 2 is formed as shown in Fig. 1 a.
  • the interposition of the damping element 23 between the end wall 20 of the outer ring 7 and the bearing surface 18 allows axial mobility of the outer ring 7 and thereby minimizing the axially transmitted vibrations.
  • the missing radial connection of the radial outer side 21 of the outer ring 17 of the first Ball bearing 4 ensures that no vibrations are transmitted radially to the nozzle 9.
  • the elastic bearing also causes a shift of the critical speed to low speeds, for example, about 15 000 1 / min and allows the bearing centering in the conical bearing wall 19 at speeds greater than the critical speed.
  • the bias due to the O-position and the additional force due to the negative pressure generated compress the damping element 23 together.
  • the motor shaft will center itself, i. the center of gravity approaches the axis of rotation; the motor shaft stabilizes and the vacuum cleaner fan runs quieter.
  • This effect is independent of the exact installation position of the shaft and of other forces acting on the shaft.
  • the vibrations transmitted radially from the first ball bearing to the housing can thereby be reduced at operating speed to, for example, 1/5 in comparison to the state of the art shown in FIGS. 1 a and 1 b, almost regardless of which unbalance the motor shaft 2 with the co-rotating components Has. Accordingly, a significant reduction of the sound power level can be achieved.
  • FIG. 3 A sectional view of a second embodiment of the invention is shown in FIG. 3 again.
  • the damping element 23 largely covers the bearing surface 18, the outer edge of the damping element 23 projecting slightly beyond the outer contour of the outer ring 7.
  • the damping element 23 has been connected prior to assembly with the outer ring 7 and the sealing washer 24 of the first ball bearing 4, for example, or sprayed on.
  • the outer ring 7 is inserted with the damping element 23 in the bearing seat 17.
  • the bearing wall 19 is funnel-shaped in a front part to facilitate the insertion of the first ball bearing 4 with the damping element 23 mounted thereon in the bearing seat 17.
  • In the rear part of the bearing wall 19 is cylindrical.
  • the second embodiment is formed as the first.
  • the damping element is designed in the described embodiments as a silicone rubber ring with an outer diameter of about 22 mm, an inner diameter of about 16 mm and a thickness of about 0.5 mm.
  • Fig. 4 is an embodiment of the first ball bearing 4 with a one piece with a sealing washer 24 executed damping element 23 is shown enlarged in section.
  • the sealing washer 24 seals the cage 25, in which the balls 8 run, from the outside and is fixed to the outer ring 7, in particular rotationally fixed, connected.
  • the damping element 23 is integrally connected to the sealing washer 24 via a connecting portion 27.
  • the damping element terminates flush with the outer side 21 of the outer ring 7 or ends slightly within an extension of the outer side 21 and is designed as a ring with a thickness of about 0.3 mm and an outer diameter of about 22 mm, facing away from the outer ring 7 , substantially flat surface has an inner diameter of about 19 mm.
  • a vacuum cleaner fan according to this embodiment of the invention is constructed like the first embodiment described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

L'invention concerne un ventilateur d'aspirateur qui comprend un boîtier, un moteur électrique pourvu d'un arbre de moteur (2) et une roue de ventilateur (1), qui est disposé sur l'arbre de moteur (2), l'arbre de moteur (2) étant monté à rotation par rapport au boîtier au moyen de deux paliers de roulement à billes espacés axialement l'un de l'autre, une bague intérieure (6) d'un premier palier de roulement à billes (4) étant reliée solidairement à l'arbre de moteur (2), et une bague extérieure (7) du premier palier de roulement à billes (4) s'appuyant contre une surface d'appui (18) d'un siège de palier (17) dans la direction axiale par le biais d'un élément d'amortissement élastique (23) et étant disposée dans une direction radiale sans contact avec le siège de palier (17). On peut ainsi obtenir une amélioration de la durabilité du montage sur palier et/ou de la transmission des vibrations au boîtier.
EP15709193.5A 2014-03-12 2015-03-12 Ventilateur d'aspirateur Withdrawn EP3116366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014204608.4A DE102014204608A1 (de) 2014-03-12 2014-03-12 Staubsaugergebläse
PCT/EP2015/055132 WO2015136022A1 (fr) 2014-03-12 2015-03-12 Ventilateur d'aspirateur

Publications (1)

Publication Number Publication Date
EP3116366A1 true EP3116366A1 (fr) 2017-01-18

Family

ID=52649038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15709193.5A Withdrawn EP3116366A1 (fr) 2014-03-12 2015-03-12 Ventilateur d'aspirateur

Country Status (3)

Country Link
EP (1) EP3116366A1 (fr)
DE (1) DE102014204608A1 (fr)
WO (1) WO2015136022A1 (fr)

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CN105846629B (zh) * 2016-03-28 2018-09-07 哈尔滨工业大学 一种径向充磁的真空洁净电机
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GB2563617B (en) 2017-06-20 2020-04-08 Dyson Technology Ltd An electric machine
FR3097912B1 (fr) * 2019-06-25 2021-06-18 Valeo Equip Electr Moteur Machine electrique tournante munie d'un organe de precontrainte de roulement
CN112747037B (zh) * 2019-10-31 2023-04-07 新疆金风科技股份有限公司 轴系结构、密封组件以及风力发电机组
CN112943795B (zh) * 2021-04-02 2025-04-04 厦门理工学院 一种可控阻尼的混合轴承、转动系统及控制方法

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