EP2932104A1 - Axial - ventilator - Google Patents
Axial - ventilatorInfo
- Publication number
- EP2932104A1 EP2932104A1 EP13759430.5A EP13759430A EP2932104A1 EP 2932104 A1 EP2932104 A1 EP 2932104A1 EP 13759430 A EP13759430 A EP 13759430A EP 2932104 A1 EP2932104 A1 EP 2932104A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- axial fan
- impeller hub
- oil
- inner chamber
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
- F04D29/362—Blade mountings adjustable during rotation
Definitions
- the present invention relates to an axial fan with blades according to the preamble of claim 1 and according to the preamble of claim 2.
- the present invention is based on the object to propose a construction of an axial fan, with the adjustability of the blades as simple as possible is feasible.
- a respective bevel pinion is arranged on the spars of the blades, wherein the bevel pinions engage in a bevel gear with a planetary gear on the Verstellantriebswelle.
- a respective bevel pinion is arranged on the spars of the blades, wherein the bevel pinions engage in a bevel gear directly on the Verstellantriebswelle.
- the adjusting drive shaft is the output shaft of the adjusting motor, via which the orientation of the blades is adjusted. To distinguish this is the drive shaft of the drive motor, via which the axial fan is rotated.
- the blades can be rotated in particular by large angles. It is possible by design, the blades completely around 360 degrees its longitudinal axis adjustable to twist. Of course, smaller angles can also be set.
- This design can be used for controllable fans with blade adjustment during operation, or for fans with two positions of the blades - one for forward operation and one for reverse operation.
- Jet fans each with one operating point for forward operation and reversing operation in tunnels with oncoming traffic and corresponding circuit in tunnel fire.
- the adjustment of the orientation of the blades takes place by means of a hydraulic adjusting motor.
- the drive torque of the hydraulic variable displacement motor keeps the blades in the correct delivery position during operation of the axial fan.
- the design with the hydraulic adjusting motor has the advantage that a hydraulic motor has good performance data with a comparatively low weight.
- the restoring torque of the blades is at least partially compensated by counterweights.
- the impeller hub on an inner chamber, wherein an oil filling in the inner chamber is present, wherein the impeller hub further comprises an outer chamber, wherein the inner chamber and the outer chamber are connected via a plurality of openings, each one Sealing system which transmits a portion of the oil and retains a portion of the oil, which are lubricated by these sealing systems, the bearings of the spars of the blades at least during operation of the axial fan, wherein the outer chamber at the radially inner end portion with the inner chamber of the impeller hub is connected by overflow pipes, through which the oil at least partially flows back into the inner chamber of the impeller hub when stopping the axial fan.
- the peripheral bearing of the bars of the blades and the adjusting gear are lubricated by this configuration.
- the impeller hub is provided with an oil filling. When operating the rotor, the oil is evenly distributed.
- the inner chamber of the impeller hub formed by the Schaufelverstelleinrichtug is sealed against the outer chamber, which is formed by the blade-side cavity.
- This seal is made by only partially permeable to the oil seals.
- it is possible to prevent the oil reservoir located in this chamber from being emptied during operation of the rotor and displacing the entire oil located in the inner chamber of the impeller hub into the outer chamber. Due to the overflow pipes, when the rotor is at a standstill, the oil can be discharged from the outer chamber into the inner chamber and collect again (substantially completely) in the inner chamber of the rotor hub.
- Figure 1 shows an axial fan with blades 11, wherein the blades 11 have a flow profile.
- the orientation of the blades 11 on the impeller hub 10 is adjustable by rotating the blades 11 about their longitudinal axis.
- the blades 11 are mounted on rails 12 on the impeller hub 10.
- On the spars 12 of the blades 11, a bevel pinion 13 is arranged in each case, wherein the bevel pinion 13 engage in a bevel gear 14 with a planetary gear on the Verstellantriebswelle 15.
- the blades are rotatable about their longitudinal axis and can be adjusted either before starting the axial fan or during operation in terms of their angle of attack.
- the blades can also be rotated by 180 degrees, so that the conveying direction of the axial fan is reversible. It follows that the efficiency and the performance data for both directions are practically the same.
- Figure 1 shows an embodiment for lubricating the rotating bearings of the adjustable blades and the gears of the adjusting gear.
- the impeller hub 10, which drives the axial fan, contains a constant oil charge. This oil is initially distributed when starting the fan in an inner chamber 16 of the impeller hub 10 and flows through the adjusting gear. In this case, a part of the oil is retained by a retaining ring 21. The part of the oil not retained by the retaining ring 21 flows through the inner hollow bearing 22. In this inner hollow bearing 22, part of the oil is retained before it reaches the outer radial hollow bearing 23 and is distributed annularly in the outer chamber 17 of the impeller hub 10. The inner chamber 16 and the outer chamber 17 of the impeller hub 10 are separated by the wall 18 from each other.
- overflow tubes 24 In this wall 18 are overflow tubes 24.
- the oil collects in the lower region of the impeller hub 10 and is from the outer chamber 17 through the overflow tubes 24 in the - at standstill of the rotor - lower portion of the impeller hub 10 in the inner Chamber 16 pressed.
- the oil is then redistributed as described above.
- Figure 2 shows an axial fan in a plan view of a sectional view at standstill of the rotor.
- the oil has collected in the lower region of the rotor 10.
- the oil filling 201 is distributed in the two chambers 16 and 17. Through this oil filling 201 during transmission and beyond the gear and bearing lubrication is maintained during operation.
- an excess amount of the oil in the inner chamber 16 is automatically returned and accumulates in the lower half of the impeller hub (10).
- Figure 2 shows an embodiment with a planetary gear. It can be seen that the lubrication described in connection with Fogur 2 can also be used if the bevel gear is driven directly by the adjusting drive shaft. This embodiment is not shown in detail.
- the blades are pivotally mounted in the impeller hub and play.
- the pivoting range 19 of the moving blades may be so great that the bevel gears 14 can be used to pivot the bevel gears 13 through 180 ° and more.
- the arrow 301 indicates the direction of rotation and the arrow 302 indicates the direction of flow.
- the adjustment of the orientation of the blades can be such that when switching from forward to reverse operation and reversal of rotation of the electric drive motor, first, the blade 11 with the airfoil by the angle ß (19) with 180 ° and more are pivoted until the operating point for reversing operation (20) is reached.
- the delivery rate of the axial fan performance is more than 80% of the delivery rate in forward mode and thus almost equal to a measured map of an axial fan in forward mode.
- the flow rate can be achieved by the adjustable blades as with an axial fan with blade adjustment.
- the direction of rotation is designated by the arrow 401 and the direction of flow by the arrow 402.
- Figure 5 shows an axial fan, which largely corresponds to the embodiment of Figure 1. Identical components are provided with the same reference numerals.
- the bevel gear 14 is driven directly from the Verstellantriebswelle 15 without a planetary gear is interposed (as is the case in the illustration of Figure 1).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL13759430T PL2932104T3 (pl) | 2012-08-06 | 2013-08-06 | Osiowy wentylator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210015358 DE102012015358A1 (de) | 2012-08-06 | 2012-08-06 | Axial-Ventilator |
| DE201320100976 DE202013100976U1 (de) | 2012-08-06 | 2013-03-06 | Axial-Ventilator |
| PCT/DE2013/100283 WO2014023299A1 (de) | 2012-08-06 | 2013-08-06 | Axial - ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2932104A1 true EP2932104A1 (de) | 2015-10-21 |
| EP2932104B1 EP2932104B1 (de) | 2018-10-10 |
Family
ID=49754503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13759430.5A Not-in-force EP2932104B1 (de) | 2012-08-06 | 2013-08-06 | Axial - ventilator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2932104B1 (de) |
| DE (2) | DE102012015358A1 (de) |
| PL (1) | PL2932104T3 (de) |
| WO (1) | WO2014023299A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331248B (zh) * | 2019-08-09 | 2022-04-15 | 天津燃洁斯工业设备有限公司 | 一种高炉热风炉助燃风机的节能调控方法 |
| DE102023119250A1 (de) * | 2023-07-20 | 2025-01-23 | Ie Assets Gmbh & Co. Kg | Lüfterrad |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR772115A (fr) * | 1934-04-20 | 1934-10-23 | Hélice à pas variable réglable en marche | |
| US3054458A (en) * | 1959-07-11 | 1962-09-18 | Marsico Corrado | Variable pitch fan |
| FR2309744A1 (fr) * | 1975-04-30 | 1976-11-26 | Ratier Sa Forest | Dispositif de commande de variation du pas des pales d'un ventilateur |
| EP0967104A3 (de) * | 1998-06-17 | 2001-03-21 | Baruffaldi S.p.A. | Vorrichtung mit verstellbaren Flügeln um Luft zu Kühlern von Motorfahrzeugen u.ä. zu fördern |
-
2012
- 2012-08-06 DE DE201210015358 patent/DE102012015358A1/de not_active Withdrawn
-
2013
- 2013-03-06 DE DE201320100976 patent/DE202013100976U1/de not_active Expired - Lifetime
- 2013-08-06 WO PCT/DE2013/100283 patent/WO2014023299A1/de not_active Ceased
- 2013-08-06 PL PL13759430T patent/PL2932104T3/pl unknown
- 2013-08-06 EP EP13759430.5A patent/EP2932104B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014023299A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| PL2932104T3 (pl) | 2019-03-29 |
| DE102012015358A1 (de) | 2014-02-06 |
| WO2014023299A1 (de) | 2014-02-13 |
| EP2932104B1 (de) | 2018-10-10 |
| DE202013100976U1 (de) | 2013-11-13 |
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