EP2766610A1 - Fan with sound-insulated fan housing - Google Patents
Fan with sound-insulated fan housingInfo
- Publication number
- EP2766610A1 EP2766610A1 EP12775605.4A EP12775605A EP2766610A1 EP 2766610 A1 EP2766610 A1 EP 2766610A1 EP 12775605 A EP12775605 A EP 12775605A EP 2766610 A1 EP2766610 A1 EP 2766610A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- fan
- sound
- drive
- segment
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
- F04D29/547—Ducts having a special shape in order to influence fluid flow
Definitions
- the invention relates to a fan with silenced fan housing, preferably for use in underground mining and tunneling, with sound-damped, mostly rohi-shaped fan housing with double wall, between the outer wall and inner wall sound-absorbing filling material is packed and in the air duct a fan with drive and guide lug is arranged, wherein the fan wheel with its wings carrying drive with the
- Inner wall of the double wall is connected and wherein the double wall consists of segments which are detachably connected to each other via their segment head walls.
- Fans or fans are used in various areas of industry, but also in private areas, for example, to guide the air to be cooled through a cooling unit or to pull the air through a downstream deduster or press through to the entrained dust to filter out the air.
- Fans and blowers are also referred to as fans if they are generally intended for air extraction. In the broadest sense, all the so-called. Compressors are attributed, depending on the application, the noise generated by the drive and fan type and the air flowing through a sound-absorbing
- Interspace are inserted.
- the use of stable filler material components is preferred so as to increase the stability of the drive and secure the fan wheel receiving pipe wall. Due to the large amounts of air or weather required underground, the fans must be correspondingly large and provided with appropriate sound insulation.
- the sound-absorbing filling material is intended to dampen both the sound pollution emitted by the drive with the upstream fan impeller and the sound load emanating from the stream of air flowing through it. Apart from the underground anyway preferred stable construction of such devices is because of
- the invention is therefore based on the object to provide a fan with a sound attenuation that attenuates the outgoing from the passing airflow and the drive and fan noise as possible to 80 db and below.
- Inner wall has sound openings, and especially in the segment with fan and drive and that the sound-absorbing filling material in the outer wall, inner wall with the sound openings and
- Segment head walls predetermined cavity against falling out and / or pressed out are arranged secured and that the outer wall and / or the double wall as such, the effect of the sound passage openings is formed compensating.
- Noise is absorbed by the "exposed" filler so that the noise can be reduced to less than 80 dB
- Thickening of the outer wall may be, but it can also be used a different type of stabilization or a different shape of the double wall, without the "liberation" of the filling of the covering them
- Inner wall is thereby impaired.
- the inner wall of the segments is replaced by a sound-permeable cover except for the region of the drive and fan impeller, or is coated with sound-absorbing lining.
- a covering or cover can be dispensed with if the filler material as such has the necessary stability to ensure that it remains despite the sound passage openings in the space provided.
- the inner wall in the area of the drive should not be dispensed with, it being provided for this purpose that the inner wall in the area of the blades of the fan wheel and the holder of the drive form an annular jacket forming the drive his designed as a support feet bracket is fixed and the annular shell in turn is connected via support posts to the outer wall.
- the drive is connected to the rotatably articulated fan wheel via support legs with the rest of the inner wall in the form of an annular shell via support legs, while this annular shell is fixed as such via support posts on the outer wall.
- Segment is the size of the sound openings selected as large as possible, these sound openings are made annular.
- the segment carrying the drive and the fan must be preceded or arranged by several segments.
- the invention provides that the
- Segment head walls to the sound passage openings forming edging formed and thus forming a kind of U with the outer wall and the respective segment head wall.
- Such segment head walls are optimally suited to a detachable connection of the individual segments, since here in the middle U-bow, which is stabilized by the folded edges, screw u. ä.
- the segments must be permanently connected to each other, which can be achieved by the fact that the segment head walls of a segment with the
- Segment head walls are pressed together immediately and remain in this connection.
- This karabinerhakenförmigen coupling parts is unnecessary any main or secondary activity, so that a quick and effective connection of the individual segments is achieved in this way.
- Sound passage openings missing fixation of the filling material is replaced by a soundproof cover or the like.
- This effect can be supported or replaced, that the support posts or support columns and the clamping parts are arranged and formed with the sound-damping filling material with fixing.
- the support posts of two rows are preferably arranged offset from each other. It is conceivable that two Rows of such support posts or multiple rows can be used, depending on how big the fan housing and the drive is arranged therein.
- the support posts as such wear the annular jacket, which in turn is responsible for the support of the drive and the fan.
- this fan can serve according to the invention with, the resulting
- a smooth outer surface having reference is replaced. Since the guide nose as such has to withstand a large load, a correspondingly stable filling or sound-damping material can be used, which then provides a large area available to dampen the resulting sound. This then means that in the guided through the annular channel fan housing interior a sound attenuation takes place on both sides, which is particularly advantageous if the guide lugs far into the
- Fan housing is provided, which is provided with a sound insulation, which is exposed over a large area so as to absorb the resulting noise or sound and dampen so that a load of less than 80 db can be achieved.
- a fan can be called whisperer, because it is far below the standard values and because such a load just in the Under noisy operation due to the prevailing general noise pollution is no longer audible. This is achieved in particular by the fact that all the areas are kept free of a sound-impermeable wall, which are not needed to support the drive and the fan wheel, so that a total of an annular large area for absorbing occurring
- FIG. 1 shows a cut-open fan housing with a fan wheel and drive and the upstream and downstream guide tabs
- FIG. 2 shows a partial detail with enlarged reproduction of the drive and fan-wheel-carrying segment of the fan housing
- Figure 3 shows a clamping part for fixing the adjacent segments in
- This fan housing 2 consists of a tubular
- Double wall 3 wherein the outer wall 4 is continuous and the
- Inner wall 5 is interrupted by specifically trained sound passage openings 24, 25. Between the outer wall 4 and the inner wall 5 sound-damping filling material 6 is arranged, which accommodated and
- Suspensions 7, T provided to such an element or such To be able to hang fan 1 safely, for example, on the track upgrade in an underground track.
- the fan housing 2 Within the fan housing 2 extends the air channel 8, in which the drive 10 is arranged fixed to the fan 9 to generate the air flow 42.
- the drive 10 is preceded by a guide nose 1 1 and a guide nose 12 downstream, so as to achieve a uniform and quietest possible guidance of the air stream 42.
- the fan 9, which is rotatably connected to the drive 10, has
- Fan 9 and drive 10 are associated with a specially trained segment 16 of the fan housing 2.
- This fan housing 2 consists namely of the segments 16, 17 and 18 or even further segments. While in the outer segments 17, 18 is practically dispensed with the inner wall 5, the middle segment 16, an annular jacket 23 as the rest of
- Received inner wall 5 which is connected via support posts 28, 28 'with the outer wall 4, so that it has its support function for the drive 10 and the
- the annular jacket 23 is connected to the bracket 22 and the support leg 27 of the drive 10, wherein on the opposite side or offset a plurality of such support legs 27 are provided, so that a precise fixation and arrangement of Drive 10 is secured in the air duct 8.
- Figure 2 illustrates further that the central segment 16 may have a plurality of support posts 28, 40 which are arranged in rows, wherein they can be positioned offset from one another with respect to the rows, so as to simultaneously secure the arranged in this cavity filling materials 6 with.
- the cavity 21 is formed by the outer wall 4 and the segment head walls 19, 30 and the edge walls associated with this Umkantept 33, 34.
- the air duct 8 towards the inner wall 5 is missing except for the annular jacket 23 so that opening rings 32, 32 'arise where the Sound unhindered on him at least partially absorbing
- the individual segments 16, 17, 18 are advantageously stabilized, which is additionally supported in the middle segment by the support posts 28, 28 'and the annular jacket 23.
- an advantageous sound reduction is already ensured, with the sound-absorbing
- Filling material 6 here also by a sound-permeable cover 26 can be additionally hedged.
- this sound-permeable cover 26 in the other segments 17, 18, the inner wall 5 largely replace. This is particularly shown in Figure 1, where the fan housing 2 is shown in section.
- Umkantache 33, 34 on the segment head walls 19, 20, 30 advantageous because they can record the segments effectively interconnecting clamping parts 36, 37, which illustrates Figure 2. These clamping parts 36, 37 are in the
- FIGS. 3 and 4 additionally shown, wherein such a clamping part 36, 37 has a coupling part 38, the z. B. a kind of screw head 47 and a
- This coupling part 38 additionally has a spring 39, which ensures that the segment head walls 19, 20 are effectively and permanently detachably connected to one another and pressed against one another. It is conceivable that these coupling parts 38 are also solid parts that have a
- FIG. 1 shows that not only the sound passage openings 24, 25 at the segment 16, but also the corresponding sound passage openings 25 'at the segments 17, 18 effectively perform their sound-damping function, but at the same time also the specially designed guide lugs 11, 12.
- These guide lugs 1 1, 12 are rounded at the free end and can have a sound absorbing lining 45, while up to the fan 9 or until the drive 10, the entire guide lug 1 1 and 12 is held only by spaced supports 46, while the actual wall 44 is formed sound absorbing or has a sound-absorbing coating 45.
- the air channel 8, which is indeed annular or formed is delimited both on the inside and on the outside by sound-absorbing or sound-damping material.
- the supports 46 are reinforced end supports 53 for the front part 54 of
- Guide nose 1 1 is a special shape of this guide nose
- This tail is in fact adapted to the head 43 of the impeller 9 adapted or this partially, so that thereby a particularly uniform guidance of the air flow 42 is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110115530 DE102011115530A1 (en) | 2011-10-11 | 2011-10-11 | Fan with silenced fan housing |
PCT/DE2012/000921 WO2013053342A1 (en) | 2011-10-11 | 2012-09-19 | Fan with sound-insulated fan housing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2766610A1 true EP2766610A1 (en) | 2014-08-20 |
EP2766610B1 EP2766610B1 (en) | 2018-11-21 |
Family
ID=47071035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12775605.4A Not-in-force EP2766610B1 (en) | 2011-10-11 | 2012-09-19 | Fan with sound-insulated fan housing |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2766610B1 (en) |
CA (1) | CA2851745C (en) |
DE (1) | DE102011115530A1 (en) |
WO (1) | WO2013053342A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3062757B1 (en) * | 2017-02-03 | 2019-04-05 | Alstom Transport Technologies | SILENT SELF-VENTILATED MOTOR, IN PARTICULAR FOR A RAILWAY VEHICLE |
DE102021212242B4 (en) * | 2021-10-29 | 2024-01-18 | Maico Elektroapparate-Fabrik Gesellschaft mit beschränkter Haftung | Fan for a ventilation device, ventilation device and method for producing fans |
EP4177478A1 (en) * | 2021-11-03 | 2023-05-10 | Talleres Zitrón, S.A. | Axial fan with an integrated silencer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2393960A1 (en) * | 1977-06-08 | 1979-01-05 | Berry Sa | Silencing system for axial flow fan - has glass wool lined duct with resonator tubes tuned to absorb sound of different frequencies |
JPS5410412A (en) * | 1977-06-23 | 1979-01-26 | Kyokuto Kikai Seisakusho:Kk | Low noise multi-stage axial flow blower |
FR2505416B1 (en) * | 1981-05-11 | 1986-09-12 | Cogema | VENTILATION SYSTEM, ESPECIALLY INDUSTRIAL FAN |
US4508486A (en) * | 1982-05-28 | 1985-04-02 | Peabody Abc Corporation | Ventilation fan with noise-attenuating housing |
-
2011
- 2011-10-11 DE DE201110115530 patent/DE102011115530A1/en not_active Withdrawn
-
2012
- 2012-09-19 WO PCT/DE2012/000921 patent/WO2013053342A1/en active Application Filing
- 2012-09-19 EP EP12775605.4A patent/EP2766610B1/en not_active Not-in-force
- 2012-09-19 CA CA2851745A patent/CA2851745C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013053342A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013053342A1 (en) | 2013-04-18 |
CA2851745C (en) | 2017-08-15 |
EP2766610B1 (en) | 2018-11-21 |
DE102011115530A1 (en) | 2013-04-11 |
CA2851745A1 (en) | 2013-04-18 |
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