EP3821145A1 - Ensemble de support - Google Patents

Ensemble de support

Info

Publication number
EP3821145A1
EP3821145A1 EP19724797.6A EP19724797A EP3821145A1 EP 3821145 A1 EP3821145 A1 EP 3821145A1 EP 19724797 A EP19724797 A EP 19724797A EP 3821145 A1 EP3821145 A1 EP 3821145A1
Authority
EP
European Patent Office
Prior art keywords
bearing
tube
fit
bearing tube
axial
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
EP19724797.6A
Other languages
German (de)
English (en)
Inventor
Volker EHLERS
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.)
Ebm Papst St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
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
Priority claimed from DE102018129608.8A external-priority patent/DE102018129608B4/de
Priority claimed from DE102018129611.8A external-priority patent/DE102018129611A1/de
Priority claimed from DE102018129613.4A external-priority patent/DE102018129613A1/de
Application filed by Ebm Papst St Georgen GmbH and Co KG filed Critical Ebm Papst St Georgen GmbH and Co KG
Publication of EP3821145A1 publication Critical patent/EP3821145A1/fr
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/006—Tidal volume membrane 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/062—Details of the 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—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
    • F04D29/05—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
    • F04D29/08—Sealings
    • F04D29/083—Sealings 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
    • 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
    • F04D29/26—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
    • 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
    • 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
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • 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
    • F16C35/067—Fixing them in a housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/37—Retaining components in desired mutual position by a press fit connection
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
    • F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/46—Fans, e.g. ventilators

Definitions

  • the invention relates to a bearing arrangement designed as a fixed-loose bearing for a rotor of a fan.
  • bearing tubes with fixed-floating bearing arrangements for use with cantilevered shaft loads.
  • a bearing tube with an inner shoulder or a geometrical shoulder for fitting a bearing is provided for bracing the bearings in an O arrangement.
  • the first bearing is inserted into the bearing tube from one axial side, a spring and the second bearing from the other axial side. Both inner rings of the bearings are firmly connected to the shaft to be supported.
  • the bearing assembly is up to the fleas the self-supporting preload. If the outer ring of the first bearing is fixed to it, for example by caulking, gluing or a locking ring, the bearing is defined in all directions.
  • bearing tubes of this type With bearing tubes of this type, the bearings are machined and inserted from two sides. In addition, a geometric shoulder should be seen, which is not always desired. Furthermore, the coaxiality of the bearing seats is not optimal due to the bilateral processing
  • the invention has for its object to provide a bearing arrangement for a rotor of a fan with improved coaxiality of the bearing seats and simplified installation options from a single axial side.
  • a bearing arrangement is designed as a fixed-loose bearing for a rotor of a fan, with a La gerrohr, a compression spring, a shaft arranged coaxially to the bearing tube and two arranged between the bearing tube and the shaft, identically designed ball bearings each with inner ring and outer ring.
  • Several different fit zones are formed axially along the bearing tube. In a first axial fit zone, one of the ball bearings is fixed as a fixed bearing with its inner ring on the shaft and its outer ring is fixed to a continuous, step-free section of the bearing tube with an interference fit.
  • a second axial fit zone another of the ball bearings is attached as a floating bearing with its inner ring to the shaft and its outer ring is axially displaceably arranged with a clearance fit on a continuous, step-free section of the bearing tube.
  • the compression spring is arranged in a third axial fit zone and is fer ner a preload against the outer rings of the ball bearing exerting axially positioned between the ball bearings and designed to eliminate a bearing play of the floating bearing.
  • the compression spring is selected so that it has a spring force sufficient for the corresponding bearing.
  • the solution according to the invention dispenses with geometrical shoulders or contact shoulders on the bearing tube for the bearings, but instead provides different fitting zones for the two bearings, on the one hand as a press fit and on the other hand as a clearance fit. This enables a fully axial single-sided machining and assembly of the bearings. The coaxiality of the two bearing seats is also optimized.
  • the assembly is simplified because the fixed bearing, the compression spring and the floating bearing are fed from the same side and only easily monitored press processes can be used. Also no additional parts such as circlips or additives such as glue are required.
  • the different fit zones are preferably determined by under different tolerance zones of the inner diameter of the bearing tube.
  • the bearing arrangement uses an outer ring-braced O arrangement
  • the bearing arrangement provides that the third axial fit zone in the region of the compression spring corresponds to the second axial fit zone. This means that only two different fit zones need to be provided. A coarser tolerance tolerance than in the floating bearing is possible in the area of the spring.
  • an advantageous embodiment of the bearing arrangement is characterized in that an axial fit length L1 of the first fit zone of the fixed bearing is determined, that is 0.35 » L1 ⁇ D ⁇ 0.5 » L1, where D is a Bearing tube inner diameter of the bearing tube is.
  • an axial fit length L2 of the second fit zone of the floating bearing is preferably determined, that is 0.35 ⁇ T2 ⁇ 0 ⁇ 0.5 ⁇ ⁇ 2. This small axial length of the fit zones reduces the machining effort to small axial sections.
  • the third fit zone of the compression spring is always axially between the two fit zones of the press and play fit of the two ball bearings.
  • the first and second fit zones each adjoin axial edge sections of the bearing tube. Your position is therefore clear and easy to determine.
  • the entire axial holding force must be borne by the press connection of the outer ring of the fixed bearing to the bearing tube.
  • a material is selected for the bearing tube that has a very similar expansion coefficient as the material of the ball bearing outer rings.
  • the material of the outer rings of the ball bearings is even identical to a material of the bearing tube, for example steel.
  • a favorable solution also provides that the outer rings of the ball bearings and the bearing tube are made of soft magnetic steel, since unmagnetic, austenitic steels have an expansion coefficient that is too high.
  • the coefficient of expansion is of minor importance and may differ from that of the bearing tube. However, it is determined in such a way that it is similar to the coefficient of expansion of the ball bearing inner rings, that there is no impairment of the press fit or an inadmissible change in the radial internal clearance of the ball bearing.
  • a version of the storage arrangement is also advantageous in which a collar is formed integrally in one piece in the bearing tube on an axial end portion of the bearing tube and has a receiving space for inserting a fan wheel.
  • the bearing tube can therefore also determine a receptacle for the fan wheel and contribute to a compact construction with a small installation space and a small number of parts. The disclosure is thus also directed to a fan with the bearing arrangement described above.
  • Fig. 1 is a perspective view of a cut layer
  • FIG. 2 shows another embodiment of a bearing arrangement of a
  • Fig. 3 shows a fan with a bearing arrangement in a sectional view.
  • Figures 1 and 2 show two embodiments of storage arrangement 1 executed as a fixed-floating bearing for a rotor 11 of a ventila gate.
  • FIG. 1 in a perspective sectional view, the bearing arrangement 1 with the bearing tube 2, a shaft 28 of a drive motor arranged coaxially in the bearing tube 2, of which only the rotor 11 is shown.
  • two identically designed ball bearings 3, 6, each with an inner ring 4, 7 and outer ring 5, 8, are arranged, one of which serves as a fixed bearing, the other as a floating bearing.
  • the compression spring 9 which exerts a spring force to eliminate the bearing play against the two outer rings 5, 8.
  • Different tolerance zones are formed by different tolerance zones on the inner wall surface of the bearing tube 2 in the area of the two ball bearings 3, 6.
  • the fits of the two bearings are carried out as follows through different tolerance zones of the diameters:
  • Diameter of the shaft 4.002 - 4.005 mm
  • Diameter bearing tube ball bearing 6 (fixed bearing) 10.983 - 10.993 mm
  • Diameter bearing tube ball bearing 3 (floating bearing) 11, 000 - 11, 011 mm
  • Diameter of the bearing tube in the area of the compression spring 9 11, 000 - 11, 04 mm
  • the geometric sizes are adjusted accordingly for larger or smaller versions.
  • the ball bearing 6 is designed as a fixed bearing, the ball bearing 3 as a floating bearing, and the arrangement can also be reversed.
  • the inner ring 7 is fastened to the shaft 28, the outer ring 8 is fixed to a continuous section of the bearing tube 2 with no press fit.
  • To the Bearing tube 2 is provided on the inner wall surface no contact shoulder or any other geometric paragraph.
  • the bearing tube 2 extends continuously without a step in the axial direction, so that all components can be assembled from a single axial side.
  • the second, identically designed ball bearing 3 is a floating bearing and also fixed to the shaft 28 with its inner ring 4.
  • the outer ring 5 is also axially displaceable with a clearance fit on a continuous, shoulder-free section of the bearing tube 2.
  • the third axial fit zone is provided, which in the embodiment shown corresponds to that of the fit zone of the ball bearing 3 determining the floating bearing, so that only two different fit zones are provided.
  • the third fit zone in the area of the compression spring 9 is, however, variably adaptable and can differ from the two fit zones of the ball bearings 3, 6.
  • the axial fit length L1 of the first fit zone of the ball bearing 6 determining the fixed bearing and the second fit zone of the ball bearing 3 determining the floating bearing are determined as 0.4 of the inner diameter of the bearing tube 2. Both fit zones are immediately adjacent to the axial edge sections of the bearing tube 2 adjacent.
  • an integral collar 25 is also formed in the bearing tube 2, which defines the receiving space 87 for inserting the fan wheel 17.
  • the exemplary embodiment according to FIG. 2 has the same features as that from FIG. 1, but differs in that the collar 25 is not provided on the bearing tube 2 but as a separate component.
  • the collar 25 is formed by a flow divider. det, which is described in more detail for Figure 3.
  • FIG. 3 shows a radial fan 100 with the bearing arrangement 1 from FIG. 1 in a sectional view.
  • the radial fan 100 comprises an electric motor 92 designed as a can motor with the rotor 11 and a stator 32.
  • the magnets of the rotor 11 are fastened to the shaft 28, which extends axially through the radial fan 100 along the axis of rotation.
  • the fan wheel 17, which is designed as a radial fan wheel, is fastened to the shaft 28 and, during operation, axially sucks air in via its impeller blades via the inlet 69 and blows it out at the outlet 44 via the pressure connection 33.
  • the radial fan 100 also includes this
  • Fan housing which is formed by the outer part 40, the inner part 50 and the housing cover 19 in which the motor 52 is received.
  • the printed circuit board 110 with the electronic components fixed thereon for regulating the radial fan 100 and on the housing cover 19 is fastened axially between the inner part 50 and the motor 52.
  • the inner part 50 on the one hand forms a free space for the electronic components on a side facing the motor 52, and on the other hand it determines, together with the outer part, the spiral pressure space D on the opposite axial side of the radial fan 100 facing the outer part 40.
  • the inner part 50 extends behind radially outside to between the outer part 40 and the housing cover 19 and is over the outer part 40 and
  • Housing cover 19 fixed. Seals 25 are provided in order to seal the two axial regions separated by the inner part 50.
  • the electrical components are arranged in the free space adjacent to the pressure chamber D and thus facing the flow, whereby heat is released to the inner part 50 and thus cooling.
  • the flow divider 18 forms with the outer part 40 ⁇ a diffuser in the pressure room D.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Support Of The Bearing (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un ensemble de support réalisé sous la forme d'un support fixe-libre pour un rotor d'un ventilateur, comprenant un tube formant palier, un ressort de pression, un arbre disposé de manière coaxiale par rapport au tube formant palier et deux roulements à billes réalisés de manière identique, disposés entre le tube formant palier et l'arbre, respectivement pourvus d'une bague intérieure et d'une bague extérieure. Plusieurs zones d'adaptation différentes sont formées axialement le long du tube formant palier. Dans une première zone d'adaptation axiale, un des roulements à billes est bloqué en tant que palier fixe par sa bague intérieure sur l'arbre et par sa bague extérieure sur une section continue sans retrait du tube formant palier avec un ajustement serré ; et dans une deuxième zone d'adaptation axiale, un autre des roulements à billes est fixé en tant que palier libre par sa bague intérieure sur l'arbre et est disposé par sa bague extérieure avec un jeu de manière à pouvoir coulisser axialement sur une section continue sans retrait du tube formant palier. Le ressort de pression est disposé dans une troisième zone d'adaptation et est positionné axialement entre les roulements à billes tout en exerçant une précontrainte contre les bagues extérieures des roulements à billes et est réalisé pour fixer un jeu du palier libre.
EP19724797.6A 2018-11-23 2019-05-14 Ensemble de support Pending EP3821145A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018129608.8A DE102018129608B4 (de) 2018-11-23 2018-11-23 Rotormontageeinheit
DE102018129611.8A DE102018129611A1 (de) 2018-11-23 2018-11-23 Rotormontageeinheit mit Kühlfunktion
DE102018129613.4A DE102018129613A1 (de) 2018-11-23 2018-11-23 Radiallüfter mit integrierter Kühlfunktion
PCT/EP2019/062391 WO2020104073A1 (fr) 2018-11-23 2019-05-14 Ensemble de support

Publications (1)

Publication Number Publication Date
EP3821145A1 true EP3821145A1 (fr) 2021-05-19

Family

ID=66589544

Family Applications (3)

Application Number Title Priority Date Filing Date
EP19725310.7A Active EP3833875B1 (fr) 2018-11-23 2019-05-14 Ventilateur radial
EP19725309.9A Withdrawn EP3824188A1 (fr) 2018-11-23 2019-05-14 Ventilateur radial
EP19724797.6A Pending EP3821145A1 (fr) 2018-11-23 2019-05-14 Ensemble de support

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP19725310.7A Active EP3833875B1 (fr) 2018-11-23 2019-05-14 Ventilateur radial
EP19725309.9A Withdrawn EP3824188A1 (fr) 2018-11-23 2019-05-14 Ventilateur radial

Country Status (6)

Country Link
US (2) US20210348647A1 (fr)
EP (3) EP3833875B1 (fr)
KR (2) KR20210096066A (fr)
CN (6) CN112867869B (fr)
DE (1) DE202019102714U1 (fr)
WO (3) WO2020104074A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112867869B (zh) * 2018-11-23 2023-09-29 依必安-派特圣乔根有限责任两合公司 径流式风扇

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Also Published As

Publication number Publication date
WO2020104074A1 (fr) 2020-05-28
KR20210093230A (ko) 2021-07-27
CN210660659U (zh) 2020-06-02
US20210348647A1 (en) 2021-11-11
CN210660710U (zh) 2020-06-02
EP3824188A1 (fr) 2021-05-26
EP3833875B1 (fr) 2023-07-26
CN112867869A (zh) 2021-05-28
DE202019102714U1 (de) 2019-05-27
CN112867868B (zh) 2023-04-21
CN112840134A (zh) 2021-05-25
US11781591B2 (en) 2023-10-10
CN112867869B (zh) 2023-09-29
WO2020104075A1 (fr) 2020-05-28
WO2020104073A1 (fr) 2020-05-28
EP3833875A1 (fr) 2021-06-16
US20210355946A1 (en) 2021-11-18
KR20210096066A (ko) 2021-08-04
CN112867868A (zh) 2021-05-28
CN210565190U (zh) 2020-05-19

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