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
  • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
• • 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
  • F04D29/00—Details, component parts, or accessories
  • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
  • F04D29/053—Shafts
• • 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
  • F04D29/08—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
  • 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
  • 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
  • F05D2210/00—Working fluids
  • F05D2210/10—Kind or type
  • F05D2210/12—Kind or type gaseous, i.e. compressible

Definitions

• the invention relates to a rotor assembly with a fan wheel and a Ra diallformater with such a rotor assembly.
• the invention is therefore based on the object of overcoming the aforementioned disadvantages and to provide a rotor assembly of a radial fan, in particular a high-speed radial fan, which offers an optimized mounting option and enables balanced storage in a sealed containment shell.
• a rotor assembly for a radial fan in particular for a high-speed radial fan, is proposed for this purpose, comprising an internally axially open bearing tube in which a shaft carrying a fan wheel is supported with a rotor of a can motor, the bearing tube having an outwardly projecting radial projection which extends at least partially over the outer circumference of the fan wheel.
• the projection is designed as an essentially round, plate-shaped projection (holding plate), the diameter DA of which is larger than the diameter DV of the fan wheel.
• the bearing tube which contains the rotor position, thus comprises a projection with an increased diameter.
• the diameter of the projection is so large that it exceeds the diameter of the radial fan wheel. It is among other things possible to grip the rotor unit and insert it into a fan housing with a can, which is only completely closed inside and in the area of the containment can, without stressing or damaging the impeller and the bearing system.
• the projection has an outer circumferential collar which extends in the axial direction and at least partially or over the entire radial area surrounds the radial edge area radially on the outside. In this way, a pot-like projection is formed on the one hand by the raised edge region, in which the fan wheel can be embedded.
• a configuration is particularly advantageous in which one or more fastening elements or fastening openings are provided in a region of the projection that is located radially outside the fan wheel. are arranged to secure the rotor assembly to a fan housing of a radio fan.
• fastening elements or fastening openings are arranged in the region of the circumferential collar.
• the cantilever is advantageously arranged directly adjacent to the fan wheel with the formation of an air gap, which gives an efficient and space-saving design for assembly.
• the shaft is mounted on a first bearing arranged in the bearing tube and on a second bearing spaced axially in the bearing tube in a region between the fan wheel and the rotor.
• the rotor assembly described above is mounted in a fan housing of a radial fan, the bearing tube with the shaft and the rotor mounted on the shaft being arranged in a circumferentially closed containment shell.
• the stator of the canned motor can be accommodated outside the can in a housing and the fan wheel can be driven by the canned motor.
• the containment shell is formed in one piece with the fan housing. In this way, sealing areas and sealing surfaces are prevented and the rotor assembly can be hermetically accommodated in the fan housing of the radial fan. It is also advantageous if the containment shell moves in the axial direction from an essentially flat housing base plate
• Fan housing extends away and the bearing tube with its radial extension cantilever (preferably directly) is supported on the housing base plate and is further preferably connected to the fan housing by means of a connection arrangement.
• the connection arrangement can be realized for example by means of a screw connection, a bayonet connection, by means of an adhesive or welded connection or by means of a mechanical connection means.
• Another aspect of the present invention relates to a radial fan, in particular a high-speed radial fan equipped with a rotor assembly as described above.
• FIG. 1 shows a side view of an exemplary embodiment of a rotor assembly group
• Fig. 2 is a sectional view through the embodiment of FIG.
• Fig. 3 is a sectional view through the embodiment of FIG.
• Fig. 4 is a plan view of the rotor assembly according to Figure 1 and
• FIGS. 1 to 9. wrote, wherein the same reference numerals indicate the same structural and / or functional features.
• FIGS. 1 to 4 An exemplary embodiment of a rotor assembly 10 is shown in FIGS. 1 to 4.
• the rotor assembly 10 is designed for a high-speed radial fan.
• the rotor assembly 10 comprises a bearing tube 20 which is axially open on the inside.
• a shaft 40 is supported in the bearing tube 20, a rotor 50 of a containment shell motor being supported on the shaft 40.
• the external stator of the motor is not shown in the figures.
• the bearing tube 20 has an outwardly projecting radial projection 21.
• cantilever 21 extends over the outer circumference 31 of the fan wheel 30.
• the projection 21 is essentially designed as a round plate-shaped projection, the diameter D A of which is larger than the diameter D of the fan wheel 30.
• the projection 21 also has an outer circumferential collar 23 (in FIG. 3) which projects upwards and extends in the axial direction A and surrounds the radial edge region 32 of the fan wheel 30 radially on the outside.
• the fan wheel 30 is placed on the shaft 40 in such a way that the fan wheel 30 is arranged in the depression in the projection 21.
• the edge region 26 of the projection 21, which is located radially outside the fan wheel 30, has, as can be seen in FIG. 2, three fastening openings 27.
• the entire rotor assembly 10 can be fastened to a fan housing 2 of a radial fan, so as shown in Figure 3.
• the three fastening supply openings 27 are arranged in the circumferential collar 23.
• the shaft 40 is supported between two bearings 24, 25, with a spring 28 is biased against the first bearing 24, which is supported on an inner collar web 29.
• the second (lower bearing 25 in FIG. 3) sits at the lower end of the bearing tube 20 and is supported against the collar web 29.
• the shaft 40 with the rotor 50 projects through the lower bearing 25.
• the fan housing 2 is also shown in FIG.
• the bearing tube 20 projects with the shaft 40 and the rotor 50 mounted on the shaft 40 into a circumferentially closed (open-top) containment shell 3, which is part of the fan housing 2 of a radial fan (which is only partially shown) and is formed in one piece with it .
• the containment shell 3 of the housing 2 extends in the axial direction away from a substantially flat housing base plate 2a of the fan housing 2.
• the bearing tube 20 is supported with its radial projection 21 on the
• Housing base plate 2a and is connected to the fan housing 2 by means of a screw connection.
• FIG. 9 shows further embodiments of the invention, in particular the design of the housing 2, the containment shell 3, the bearing tube 20 and the design of the heat dissipation section 23 in an alternative form.
• the projection of the can 3v can also be seen, which extends between an upper housing part and lower housing part of the housing 2.
• FIG. 9 it can also be seen that a fastening opening is provided in the area of the heat dissipation section 23 in order to fasten the projection of the bearing tube 20 to the projection of the can 3.
• the embodiment of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable, which also apply to the solution shown makes use of fundamentally different types.
• the bearing tube 20 could also be glued to the housing base plate 2a.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=68564804

Family Applications (1)

Country Status (6)

Family Cites Families (14)

• 2018
  • 2018-11-23 DE DE102018129608.8A patent/DE102018129608B4/de not_active Expired - Fee Related
• 2019
  • 2019-01-03 CN CN201920005685.7U patent/CN209671239U/zh active Active
  • 2019-10-30 US US17/287,908 patent/US20210355955A1/en not_active Abandoned
  • 2019-10-30 CN CN201980069334.5A patent/CN112912630A/zh active Pending
  • 2019-10-30 EP EP19806099.8A patent/EP3841306A1/de not_active Withdrawn
  • 2019-10-30 KR KR1020217012617A patent/KR20210094522A/ko not_active Application Discontinuation
  • 2019-10-30 WO PCT/EP2019/079615 patent/WO2020104152A1/de unknown

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