EP3833876A1 - Radiallüfter mit integrierter kühlfunktion - Google Patents
Radiallüfter mit integrierter kühlfunktionInfo
- Publication number
- EP3833876A1 EP3833876A1 EP19797651.7A EP19797651A EP3833876A1 EP 3833876 A1 EP3833876 A1 EP 3833876A1 EP 19797651 A EP19797651 A EP 19797651A EP 3833876 A1 EP3833876 A1 EP 3833876A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- pressure chamber
- air duct
- bearing tube
- radial
- 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.)
- Granted
Links
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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- 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
- F04D29/056—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
- F04D29/40—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
- F04D29/44—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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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 radial fan which has an integrated cooling function.
- high speed fan housings are made from a metal. This provides cooling and the heat can easily escape through the thermally conductive housing wall.
- more complex oil or water cooling can alternatively be used. If a medium can be used for cooling, the area to be cooled is flowed around by this medium.
- the disadvantage is that only limited shaping and connection techniques can be used.
- the primary housing of the fan made of plastic allows greater freedom of form and enables alternative joining processes, but the heat transfer is then unsatisfactory.
- the invention is therefore based on the object to overcome the aforementioned disadvantages and to provide a rotor assembly of a radial fan, in particular a high-speed radial fan, which offers an optimized cooling option for bearing cooling.
- a high-speed centrifugal fan is proposed with a fan housing with a spiral pressure chamber (spiral channel) comprising an internally axially open bearing tube in which a shaft carrying a fan wheel is mounted with a rotor of a can motor, with the bearing tube and the wall of the can of the containment shell motor, an air duct is formed between a first pressure chamber region and a second pressure chamber region of the spiral pressure chamber, so that an air flow through the air duct from flows from one to the other pressure chamber area (in particular through an area in the containment shell) and dissipates heat from the bearing tube into the pressure chamber.
- a spiral pressure chamber spiral channel
- At least one air duct opening of the air duct opens directly into the pressure chamber.
- the configuration of the opening can be selected so that it is oriented to favor the flow and the inflow of air in the spiral pressure chamber is promoted.
- At least one air duct opening is arranged in an area in the pressure chamber of the housing in which the pressure during operation of the fan is higher than that of an air duct outlet of the air duct.
- a projection is formed by the bearing tube and this is designed as an essentially round plate-shaped projection, the diameter of which is larger than the diameter of the fan wheel.
- the bearing tube with a collar is built into the housing, so that a nested construction is formed.
- the air duct can be at least partially formed by material cutouts in the form of channels or grooves. These channels are designed so that at least one channel has an opening to the spiral channel of the impeller.
- the opening (s) in the spiral duct are preferably placed so that they have the greatest possible pressure difference in the usual working points of the blower.
- the other opening of the channels is located in the area of the outer diameter of the bearing tube.
- a plurality of air guide channels form a common air channel system and these are connected to one another in such a way that an air stream flows through the air channel system from one to the other pressure chamber area and thereby dissipates heat from the bearing tube into the pressure chamber via the plurality of air guide channels .
- Another advantageous embodiment of the invention provides that the air duct or ducts in the fan housing are designed as groove-like recesses.
- the air guiding channels are formed in an area below the cantilever and are limited by the cantilever. In this way, the channel is limited on one side by the projection of the bearing tube.
- the air duct runs directly through a housing base plate formed by the fan housing, which is located flat below the fan wheel.
- the opening to the air duct in the first pressure chamber area and the opening to the air duct in the second pressure chamber region of the spiral pressure chamber are provided at diametrically opposite positions. But it can also be provided in a star shape, a plurality of intersecting channels in the center, the openings of which are diametrically opposite.
- the shaft is mounted on a first bearing arranged in the bearing tube and a second bearing arranged axially at a distance in the bearing tube in a region between the fan wheel and the rotor and the air duct runs in such a way that an air flow in the containment shell (also) flows around the area of the bearings.
- a structurally advantageous solution also provides that the containment shell is formed in one piece with the fan housing.
- FIG. 1 is a sectional side view of an embodiment of a radial fan
- Fig. 2 is a perspective sectional view through the radial fan according to
- FIG. 3 shows a perspective top view of the exemplary embodiment according to FIG. 2 with an open fan housing
- Fig. 4 is a perspective view of the embodiment of Figure 3, but without the fan wheel and without the rotor assembly with Kra gene and
- FIG. 1 An exemplary embodiment of a radial fan 1 is shown in FIG.
- the radial fan 1 comprises a rotor assembly 10. This 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 51 of the motor can also be seen in FIGS. 1 and 2.
- the bearing tube 20 has an outwardly projecting radial projection 21. This projection 21 extends over the outer circumference 31 of the fan wheel 30. In the sectional view according to FIG. 1 and the perspective sectional view of FIG. 2, it can be clearly seen that the projection 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 of which is larger than the diameter of the fan wheel 30.
- the fan wheel 30 is placed on the shaft 40 in such a way that the fan wheel 30 is arranged in the recess in the projection 21 .
- the radial fan 1 has a fan housing 2 with a spiral pressure chamber D.
- the rotor 50 which is positioned on the shaft 40, is mounted as a split pot motor in the split pot 3, with an air duct between the bearing tube 20 and the wall of the split pot 3 of the split pot motor L is formed between a first pressure chamber region 2a and a second pressure chamber region 2b of the spiral pressure chamber D, so that an air flow flows through the air guide channel L from one to the other pressure chamber region 2a, 2b and thereby removes heat from the bearing tube 20 into the pressure chamber D.
- the shaft 40 is supported between two of the two bearings 24, 25, a spring 28 being biased against the first bearing 24.
- the second (lower bearing 25 in FIG. 1) sits at the lower end of the bearing tube 20.
- the shaft 40 with the rotor 50 projects through the lower bearing 25.
- the bearing tube 20 rests with its radial projection 21 on the housing base plate 5 and is fastened to the fan housing 2 by means of a screwing.
- the air duct openings L1, L2 of the air duct L open directly into the pressure chamber D, as can be clearly seen in FIG. 4.
- the two partial air guiding channels are each formed in the fan housing 2 as groove-shaped cutouts and each extend from the pressure chamber D to the containment shell 3.
- FIGS. 5 to 9 show further embodiments of the invention, in particular the design of the housing 2, the can 3, the bearing tube 20 and the design of the heat dissipation section 23 in an alternative form. You can also see the overhang of the containment can 3v, which is between an upper housing part and lower housing part of the housing 2 extends.
- FIG. 9 also shows that a fastening opening is provided in the region 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 given above. Rather, a number of variants are conceivable which make use of the solution shown, even in the case of fundamentally different types. So the air duct shown z. B. also be formed from a plurality of channels.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018129613.4A DE102018129613A1 (de) | 2018-11-23 | 2018-11-23 | Radiallüfter mit integrierter Kühlfunktion |
| PCT/EP2019/079619 WO2020104153A1 (de) | 2018-11-23 | 2019-10-30 | Radiallüfter mit integrierter kühlfunktion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3833876A1 true EP3833876A1 (de) | 2021-06-16 |
| EP3833876B1 EP3833876B1 (de) | 2022-02-23 |
Family
ID=68015800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19797651.7A Active EP3833876B1 (de) | 2018-11-23 | 2019-10-30 | Radiallüfter mit integrierter kühlfunktion |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11339801B2 (de) |
| EP (1) | EP3833876B1 (de) |
| KR (1) | KR102541764B1 (de) |
| CN (2) | CN209444583U (de) |
| DE (1) | DE102018129613A1 (de) |
| WO (1) | WO2020104153A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024120584A1 (de) * | 2024-07-19 | 2026-01-22 | Zf Cv Systems Global Gmbh | Gebläse für eine Brennstoffzellenanordnung für ein Fahrzeug, insbesondere Nutzfahrzeug, Brennstoffzellenanordnung, Fahrzeug |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743721A (en) | 1996-04-30 | 1998-04-28 | Itt Automotive Electrical Systems, Inc. | Blower assembly having integral air flow cooling duct |
| DE202006005189U1 (de) * | 2006-03-31 | 2007-08-16 | H. Wernert & Co. Ohg | Kreiselpumpe mit koaxialer Magnetkupplung |
| US7942646B2 (en) * | 2006-05-22 | 2011-05-17 | University of Central Florida Foundation, Inc | Miniature high speed compressor having embedded permanent magnet motor |
| NZ603342A (en) * | 2006-10-24 | 2014-08-29 | Resmed Motor Technologies Inc | Vibration isolation system for a respiratory treatment device |
| JP5468747B2 (ja) * | 2007-06-05 | 2014-04-09 | レスメド・モーター・テクノロジーズ・インコーポレーテッド | 軸受管を有するブロワ |
| US8215928B2 (en) * | 2007-10-02 | 2012-07-10 | R&D Dynamics Corporation | Foil gas bearing supported high temperature centrifugal blower and method for cooling thereof |
| DE102011078784A1 (de) * | 2011-07-07 | 2013-01-10 | Siemens Ag | Elektrische Maschine mit Rotorinnenbelüftung |
| DE112015006484B4 (de) * | 2015-04-24 | 2023-08-10 | Pierburg Pump Technology Gmbh | Elektrische Evaporations-Pumpe für Kraftfahrzeuge |
| DE102015012277A1 (de) | 2015-09-24 | 2017-03-30 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Lüftereinheit |
| CN107228074B (zh) * | 2017-07-31 | 2019-12-17 | 广东威灵汽车部件有限公司 | 电子水泵 |
| CN208073790U (zh) * | 2018-01-05 | 2018-11-09 | 广东威灵电机制造有限公司 | 电子水泵 |
-
2018
- 2018-11-23 DE DE102018129613.4A patent/DE102018129613A1/de not_active Withdrawn
- 2018-12-28 CN CN201822235205.4U patent/CN209444583U/zh not_active Expired - Fee Related
-
2019
- 2019-10-30 CN CN201980069029.6A patent/CN112955663B/zh not_active Expired - Fee Related
- 2019-10-30 WO PCT/EP2019/079619 patent/WO2020104153A1/de not_active Ceased
- 2019-10-30 US US17/286,399 patent/US11339801B2/en active Active
- 2019-10-30 KR KR1020217011209A patent/KR102541764B1/ko active Active
- 2019-10-30 EP EP19797651.7A patent/EP3833876B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112955663A (zh) | 2021-06-11 |
| US20210388850A1 (en) | 2021-12-16 |
| CN112955663B (zh) | 2023-03-14 |
| KR20210072775A (ko) | 2021-06-17 |
| EP3833876B1 (de) | 2022-02-23 |
| CN209444583U (zh) | 2019-09-27 |
| US11339801B2 (en) | 2022-05-24 |
| KR102541764B1 (ko) | 2023-06-13 |
| DE102018129613A1 (de) | 2020-05-28 |
| WO2020104153A1 (de) | 2020-05-28 |
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