WO1992015789A1 - Radialgebläse - Google Patents
Radialgebläse Download PDFInfo
- Publication number
- WO1992015789A1 WO1992015789A1 PCT/EP1992/000206 EP9200206W WO9215789A1 WO 1992015789 A1 WO1992015789 A1 WO 1992015789A1 EP 9200206 W EP9200206 W EP 9200206W WO 9215789 A1 WO9215789 A1 WO 9215789A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearings
- shaft
- rotor
- radial
- ceramic
- Prior art date
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
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0566—Ceramic bearing designs
-
- 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
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
Definitions
- the invention relates to a radial fan with a rotor, a drive motor, a rotor shaft and lubricant-supplied shaft bearings, the drive motor and the shaft bearings being accommodated in a housing which has a bushing for the shaft and a connection for evacuating the Housing interior is equipped.
- Blowers of this type are preferably integrated in gas lasers and serve to circulate the gases flowing around them at a pressure of approximately 50-200 mbar.
- a pressure of approximately 50-200 mbar there is a demand for long downtimes and short interruptions in the event of maintenance or repair work.
- an oil circulation lubrication with oil sump and oil pump is provided as a lubricant supply for the shaft bearings.
- Oil atomization takes place in the engine and storage space, both in the bearings and - because of the existing centrifugal disks - on the inner walls.
- This risk is particularly high if the storage system is evacuated, if the oil atomization due to high speeds is particularly strong and if there is a negative pressure in the area of the rotor, as is the case, for example, with turbo radial fans which are used to circulate gases in gas lasers.
- blower cannot be installed in a gas laser regardless of the position. It must always be ensured that the oil sump is at the lowest point.
- the blower is therefore often integrated into the gas laser at locations which are difficult to access, which additionally increases the maintenance and repair times which are already relatively long because of the integration in the gas laser.
- the present invention has for its object to provide a radial fan of the type mentioned, in which long service life and thus a significant reduction in maintenance can be achieved despite the lack of oil circulation lubrication.
- this object is achieved in that the bearings of the rotor shaft are designed as ceramic bearings.
- the bearing temperatures remain significantly lower. These bearings can therefore be lubricated with grease.
- the cold welds feared in steel bearings and caused by inadequate lubrication no longer occur. These cause increased friction and sliding phenomena in steel bearings and thus increased bearing temperatures and increased bearing wear, which in use ceramic bearing materials is no longer the case.
- a radial fan equipped with grease-lubricated ceramic bearing bearings can be installed regardless of the position. It can therefore be installed in locations that are convenient for both cooling and maintenance.
- the bearings are designed as roller bearings with roller bodies and bearing rings and if only the roller bodies are made of ceramic. Since ceramic rolling elements are lighter than steel rolling elements, the centrifugal forces and thus the internal bearing stresses are lower, which has the desired influence on extending the bearing life.
- the turbo radial blower 1 shown only partially in the figure has the motor and bearing housing 3.
- the rotating unit held in this housing consists of the blower rotor 11, the shaft 12 and the armature of the motor 13.
- rolling bearings 14 and 15 are provided, one of which (14) is arranged between the blower rotor 11 and the motor armature, while the second bearing 15 is located in the region of the free end of the shaft 12 facing away from the fan rotor 11.
- the front end of the housing 3 form flange-like covers 16 and 17, so that the housing interior 18 is closed except for the shaft bushing 19 in the upper cover 16.
- an evacuation line 21 is provided which connects the interior 18 of the housing 3 to a small flange 22 to which a vacuum pump is connected during the operation of the fan 1 is connected.
- the bearings 14, 15 are designed as ceramic bearings, ie at least the rolling elements of these bearings - preferably balls - are made of ceramic material.
- Grease-lubricated bearings of this type have a long service life, which can be extended by assigning grease storage spaces 23.
- An installation part 24 comprising the shaft 12, which is assigned to the underside of the upper bearing 14 and contains the grease storage space 23, is shown and designated by 24.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4503055A JPH06505070A (ja) | 1991-03-09 | 1992-01-31 | ラジアルブロワ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9102855U DE9102855U1 (de) | 1991-03-09 | 1991-03-09 | |
DEG9102855.8U | 1991-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992015789A1 true WO1992015789A1 (de) | 1992-09-17 |
Family
ID=6865093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1992/000206 WO1992015789A1 (de) | 1991-03-09 | 1992-01-31 | Radialgebläse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0575342A1 (de) |
JP (1) | JPH06505070A (de) |
DE (1) | DE9102855U1 (de) |
WO (1) | WO1992015789A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997044586A1 (fr) * | 1996-05-22 | 1997-11-27 | Zakrytoe Aktsionernoe Obschestvo 'seibolt - Evrazia' | Micro-compresseur |
EP1174623A2 (de) * | 2000-07-21 | 2002-01-23 | Minebea Kabushiki Kaisha | Lüfter |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2259711B (en) * | 1991-09-20 | 1995-07-05 | Nsk Ltd | Rolling bearing |
DE4304790A1 (de) * | 1993-02-17 | 1994-08-18 | Schlattl Werner Bavaria Tech | Punktschweißzange sowie Lageranordnung für eine solche Schweißzange |
DE10325077A1 (de) * | 2003-04-01 | 2004-10-14 | General Motors Corp., Detroit | Nach außen abgedichtete Pumpe für ein gasförmiges, eine Dampfphase enthaltendes Medium |
JP5482520B2 (ja) * | 2010-07-09 | 2014-05-07 | 株式会社Ihi | ターボ機械 |
WO2017057480A1 (ja) * | 2015-10-02 | 2017-04-06 | 株式会社Ihi | 遠心圧縮機 |
JP7017240B2 (ja) * | 2018-10-09 | 2022-02-08 | 有限会社スクロール技研 | スクロール型圧縮機 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0412165A1 (de) * | 1989-02-23 | 1991-02-13 | Fanuc Ltd. | Turbogebläse für laser und laseroszillatoren |
EP0412476A2 (de) * | 1989-08-11 | 1991-02-13 | Leybold Aktiengesellschaft | Vakuumpumpe mit einem Rotor und mit unter Vakuum betriebenen Rotorlagerungen |
-
1991
- 1991-03-09 DE DE9102855U patent/DE9102855U1/de not_active Expired - Lifetime
-
1992
- 1992-01-31 EP EP19920903133 patent/EP0575342A1/de not_active Withdrawn
- 1992-01-31 WO PCT/EP1992/000206 patent/WO1992015789A1/de not_active Application Discontinuation
- 1992-01-31 JP JP4503055A patent/JPH06505070A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0412165A1 (de) * | 1989-02-23 | 1991-02-13 | Fanuc Ltd. | Turbogebläse für laser und laseroszillatoren |
EP0412476A2 (de) * | 1989-08-11 | 1991-02-13 | Leybold Aktiengesellschaft | Vakuumpumpe mit einem Rotor und mit unter Vakuum betriebenen Rotorlagerungen |
Non-Patent Citations (1)
Title |
---|
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY Bd. 8, Nr. 3, 1990, NEW YORK Seiten 2772 - 2777; HELDNER: 'Reliability of turbomolecular vacuum pumps: A comparison of rolling elements and magnetic bearing systems' * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997044586A1 (fr) * | 1996-05-22 | 1997-11-27 | Zakrytoe Aktsionernoe Obschestvo 'seibolt - Evrazia' | Micro-compresseur |
EP1174623A2 (de) * | 2000-07-21 | 2002-01-23 | Minebea Kabushiki Kaisha | Lüfter |
EP1174623A3 (de) * | 2000-07-21 | 2003-02-05 | Minebea Kabushiki Kaisha | Lüfter |
Also Published As
Publication number | Publication date |
---|---|
JPH06505070A (ja) | 1994-06-09 |
EP0575342A1 (de) | 1993-12-29 |
DE9102855U1 (de) | 1991-06-20 |
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