EP3111094A1 - Flow rectifier and fan assembly having a flow rectifier - Google Patents
Flow rectifier and fan assembly having a flow rectifierInfo
- Publication number
- EP3111094A1 EP3111094A1 EP14828026.6A EP14828026A EP3111094A1 EP 3111094 A1 EP3111094 A1 EP 3111094A1 EP 14828026 A EP14828026 A EP 14828026A EP 3111094 A1 EP3111094 A1 EP 3111094A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- webs
- flow straightener
- radial
- grid
- flow
- 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
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- 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
-
- 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
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Definitions
- the invention relates to a flow rectifier for a flow inlet opening of a fan arrangement according to the preamble of claim 1 and to a fan arrangement, preferably a tube fan arrangement according to claim 22.
- the fan arrangement is particularly preferably a fan arrangement in which the inflow is mainly directed axially. as is the case in particular with tubular fan arrangements.
- a flow rectifier for a fan which has a lattice structure formed by lattice webs, the suction-side outer surface of which is arranged in a radial plane.
- the lattice structure of the known flow rectifier is formed by radial webs extending in the radial direction as well as these intersecting circumferential webs extending in the circumferential direction and arranged concentrically.
- the radial webs run in a star shape toward a central inlet opening, which is bounded by a circumferential web in the radial direction.
- a disadvantage of the known flow rectifier is a high pressure loss, which leads to a high power consumption of the fan.
- the known flow straightener seems to be in need of improvement in terms of minimizing the low-frequency blade turning tones.
- the known flow rectifier comprises star-shaped baffles which, according to one exemplary embodiment, run onto a guide body of an impeller, wherein the guide body axially passes through an outlet opening of the flow rectifier.
- the guide body is a separate from the baffles Component, which is supported by the baffles.
- the radially and axially extending baffles meet in a central meeting place.
- the baffles define a central inlet opening.
- the object of the invention is to provide a flow rectifier which is suitable in particular for tube fan arrangements or generally fan arrangements with largely axially directed inflow, which reduces turbulence in the inflow and low-frequency rotary noise, preferably with minimized pressure loss of the fan flow straightener. Furthermore, the object is to provide a fan assembly, in particular a pipe ventilator arrangement with such a flow rectifier.
- the invention has recognized that a centric inlet opening of the flow rectifier is disadvantageous in particular with the use of flow rectifiers in connection with fan arrangements with mainly axially directed inflow, such as in particular Rohrldiveranord-, with regard to an optimized noise reduction Turning tones in the low-frequency range.
- this is due to the fact that appreciable non-rectified flow components can flow in the direction of the fan wheel due to the centric inflow opening provided in the prior art.
- a closed center section through which a longitudinal central axis of the flow rectifier passes, is provided which can not be flowed through, so that all the air sucked in is forced through the grid openings delimited by intersecting lattice webs of a lattice structure.
- the formation of the grid openings is a further essential feature of the flow straightener according to the invention - for optimized rectification and thereby optimized Drehtonge Hurschminimierung in the low-frequency range, namely, it is advantageous that the grid openings are not limited as partially in the prior art only extending in the radial direction Leitfinnen but that the grid openings are closed on all sides or are limited by intersecting grid webs, which form a grid structure, in particular each of two radial webs extending radially and possibly additionally in the axial direction and of two grid webs extending in the circumferential direction.
- the (lattice) openings are provided in a lattice structure and are not limited exclusively by star-shaped baffles.
- the flow straightener constructed according to the concept of the invention has a centric region which is closed relative to the axial projection surface and which is surrounded by a multiplicity of lattice openings, each of which is delimited by a plurality of intersecting lattice rods.
- the grid openings are each limited by four crossing points.
- the central central portion is axially spaced from the outlet opening, more precisely a center of the outlet opening, wherein it is particularly preferred when a longitudinal central axis extends through the central portion and the center of the outlet opening, still more preferably this longitudinal central axis in the assembled state of the flow rectifier with a Rotary axis of an associated fan of a fan assembly axially aligned.
- the closed central section there are, as indicated, different possibilities. In principle, it is conceivable to design this as a cover part which is separate from the grid structure and which closes a central opening from at least one axial side and / or covers a grid structure section. It is particularly preferred if the lattice webs are firmly connected to the closed central portion, wherein it is particularly preferred, in particular with regard to a design of the flow rectifier as a plastic injection molded part, when the lattice webs are formed integrally with the closed central portion. In particular, in a latter variant, as will be explained later, the closed central portion can be used as Anspritz Certain or injection.
- the designed according to the concept of the invention flow straightener, as mentioned, for fan systems with mainly axial inflow, such as pipe fan assemblies.
- Optimized is the flow straightener in particular for small to very small sizes of fan assemblies, especially with fan diameter from a range between 10mm and 220mm, preferably between 10mm and 120mm and / or for fans with a flow rate between 0.5 3 / h and 50m 3 / h.
- the lattice webs can be designed to minimize pressure losses as thin as possible.
- the closed central portion is integrally formed with the grid webs, which is preferably possible by forming the central portion together with the grid structure as a common plastic injection molded part. More preferably, the entire flow rectifier is formed as a plastic injection molded part.
- the central section it is conceivable for the central section to be formed by a cover part which is separate from the grid webs and which is fixed in a component of the flow rectifier, in particular on the grid structure, for example by screwing, latching or in some other way.
- the central section either covers a centric entrance opening within the lattice structure or covers a lattice structure section.
- the closed central portion is also a possibility for forming the closed central portion to form this from a meeting point of several, preferably star-shaped converging in the meeting point grid bars, wherein the grid bars are preferably radial webs, which, as will be explained later, in addition also can extend in the axial direction, in particular when the lattice structure, as will also be explained later, the envelope surface of a three-dimensional geometric body is limited.
- the central portion of the above embodiment is not punctiform - but the feature is to be understood that the surface of the central portion is only formed by the meeting grid bars in contrast to an alternative embodiment in which the closed central portion has a greater cross-sectional area extension and abut the grid webs at a distance from a longitudinal center axis of the flow rectifier on the outer circumference of the central portion, in particular ends.
- the suction-side outer side of the lattice structure limits the envelope surface of a three-dimensional geometric body (an envelope surface because the "lateral surface” is perforated by the lattice openings in the concrete case)
- these limited grid openings are filled or not connected together with the then filled-in areas form the lateral surface of a three-dimensional geometric body, this three-dimensional body is particularly preferably convex in the direction of the suction side or curved concavely in the opposite direction,
- the radius of curvature The convexly or concavely arched grid structure is selected from a value range between 5 mm and 120 mm, preferably between 5 mm and 60 mm.
- the radius of curvature is at least approximately half that Diameter of the flow straightener corresponds. It is particularly expedient if the abovementioned three-dimensional body, whose envelope surface or envelope contour is delimited by the lattice structure, is a spherical segment stump, ie the lateral surface preferably has the contour of a no longer complete spherical cap from which an end-side spherical cap section has been removed In terms of a spherical segment stump is a spherical disc with parallel end or base surfaces.
- the aforementioned three-dimensional geometric body is formed as a truncated cone or as a truncated pyramid, wherein the truncated pyramid is n-side and n> 3, in particular 4, 6, 8 or 12.
- a base of the three-dimensional body is circular.
- the Hüllmantel nature may have a continuous contour in the radial direction or a discontinuous course.
- the envelope lateral surface has two radially adjacent annular sections which are connected to one another via a discontinuous connecting section.
- grid webs project outwards.
- the suction-side outer side of the lattice structure does not delimit any envelope surface of a three-dimensional geometric body but in which this outer side is planar or lies in a radial plane.
- the grid structure is then formed as a total cylinder body, in particular with a circular base.
- the lattice structure ensures a homogenization of the inflow by reducing turbulence. Due to the walls formed by the bars, velocity fluctuations perpendicular to the main flow direction are hindered. On the distance between the walls to each other this influence can be controlled, wherein it is important at the same time and is advantageous that the pressure loss caused by the grid structure according to the invention is minimized.
- the central portion is flat disc-shaped or the central portion is formed as a flat portion, in particular with a suction-side outer surface, which is arranged in a radial plane so even.
- the suction-side surface of the closed central portion is formed as a lateral surface of a three-dimensional geometric body, which is preferably curved in the direction of the suction side convex or in the opposite axial direction, that is formed concave.
- suction-side surface as a lateral surface of a spherical section, a spherical segment stump, a cone, a truncated cone, a pyramid or a truncated pyramid, wherein the pyramid is again formed on the n-side where n> 3, preferably 4, 6, 8 or 12.
- the axial projection area of the central portion is not greater than the axial projection area of a hub portion or of a hub of the fan wheel.
- the closed center section is preferably smaller or at most congruent with the projection surface of the hub of the fan wheel.
- an axial height H of the flow rectifier which is preferably measured starting from the suction side of the central section, is selected as a function of the diameter of the outlet opening, the ratio preferably being: 0.5 ⁇ H / D A ⁇ 0.5.
- the diameter D A of the outlet opening preferably corresponds at least approximately to the diameter of a fan wheel in a fan arrangement comprising the appropriately designed flow rectifier.
- the above embodiment is particularly advantageous in the preferred variant of the flow rectifier, in which the suction-side outer surface of the lattice structure limits the enveloping shell structure of the three-dimensional geometric body. It has proven to be particularly advantageous with regard to noise reduction in the low-frequency range if the lattice webs forming the lattice structure also extend radially in the axial direction and in the case of a three-dimensional configuration of the suction-side outer surface of the lattice structure and radially in the circumferential direction around the central portion extending around the radial webs preferably at an angle of 90 ° ⁇ 10 ° deviation intersecting peripheral webs is formed or when the grid webs include such radial webs and peripheral webs.
- the aforementioned radial webs meet radially outward on a circumferential, preferably circular edge web or pipe section, wherein even more preferably the edge web or pipe section simultaneously forms an outlet opening edge which limits the outlet opening.
- the aforementioned edge web is contoured circular.
- circumferential webs are arranged concentrically, wherein in a first embodiment of the radial distance of each adjacent peripheral webs for all devicesstegpaa- ments is the same.
- the radial distance of circumferential webs may vary.
- the depth extent of the circumferential webs is not exactly aligned axially, but the peripheral webs are inclined relative to an axial, in particular conically contoured, very particularly preferably such that the circumferential webs deflect the sucked air in the direction of a longitudinal central axis. It is very particularly preferred if a plurality of circumferential webs in the form of nested, axially tapered funnels are formed or arranged. Also with regard to the design and orientation of the radial webs, there are different possibilities.
- the radial ge as radially continuous, ie extending from the closed central portion continuously in the radial and preferably at the same time also axial direction, then to open radially outward preferably in the aforementioned edge web or pipe section.
- radial webs spaced apart from each other by one of the circumferential webs are arranged offset from each other in the circumferential direction, in particular to thereby form or limit grid openings having at least approximately the same cross-sectional area with different radial positions.
- the, preferably approximately trapezoidal, cross-sectional areas of most grid openings, preferably all grid openings are the same size, which by varying the radial distances of circumferential webs and / or by varying the pitch of the radial webs in dependence can be realized by the radial position.
- the number of circumferentially annularly juxtaposed openings varies depending on the radial position, so that fewer grid openings are provided in a first, radially inwardly located ring of circumferentially juxtaposed grid openings than in a radially further outward, preferably spaced by a circumferential ridge Ring of grid openings, wherein it is particularly preferred if the measured in the circumferential direction mean grid width in different rings of grid openings is the same.
- the distance of the circumferential webs can additionally or alternatively be varied.
- the radial distance of the circumferential webs can be the same size from peripheral web to peripheral web or different sizes.
- An embodiment in which the grid openings in a first ring in front of the circumferential directions have a pitch which is different from the pitch of the grid opening of a radially adjacent ring from the circumferential directions of juxtaposed grid openings, in particular, but not necessarily, is particularly preferred. to obtain grid openings with the same cross-sectional area.
- the radial webs which are radially spaced apart from one another via a circumferential web are arranged offset from one another in the circumferential direction.
- the depth of cut of at least two webs delimiting a grid opening is different.
- This embodiment is particularly interesting when two radially adjacent surface portions are provided by annularly arranged grid openings, wherein the lateral surface in this case preferably makes a discontinuous jump in the radial direction, which is preferably caused or realized by radially projecting, radially and axially extending Webs whose depth of burial is thus comparatively large. It is also conceivable that the depth of cut of a web varies over its circumferential or alternatively radial extent.
- the ratio of a web depth substantially extending in the axial direction or a web thickness extending perpendicular to the web longitudinal extent and the web depth extension is greater than 5.
- W R mean distance between adjacent circumferential webs
- Wu average circumferential width
- the diagonal width of grid openings juxtaposed in the radial direction and / or of the grid openings arranged adjacent to one another in the circumferential direction may vary or, alternatively, be the same.
- a mean width is generally understood as the arithmetic mean of all corresponding (radial or circumferential) widths of the respective opening.
- the invention also leads to a fan arrangement, preferably a tube ventilator arrangement, with a fan, to which a flow inlet opening, in particular a flow channel, for sucking air is assigned, on the suction side in front of which, preferably detachably, a flow rectifier designed according to the concept of the invention is arranged.
- the flow rectifier can be fixed externally in the area of a circumferential area of the flow inlet opening and / or at least partially inserted into the flow inlet opening, wherein attachment can also take place within the flow channel, for example by latching.
- a longitudinal central axis of the flow rectifier which preferably runs centrally through the closed central section, is aligned in the axial direction with the axis of rotation of the fan.
- the flow rectifier designed according to the concept of the invention is designed for fan arrangements which promote a volume flow of between 0.5 and 50 m 3 / h. It is particularly expedient if, as mentioned, the fan arrangement is designed such that the inflow is directed at least for the most part axially, as is the case, for example, with tube fan arrangements in which the fan is arranged within a tube which forms the flow channel whose inlet opening the flow rectifier is assigned.
- FIG. 1 is a perspective view of a fan assembly with a trained according to the concept of the invention flow straightener, partially cut,
- FIG. 1 shows a detail view of FIG. 1
- FIG. 3 shows a fan arrangement designed as a tube fan arrangement with a flow rectifier designed according to the concept of the invention
- FIG. 4 shows a variant of a flow straightener with star-shaped radial webs and circumferential webs, wherein the radial webs run on an integral with these closed central portion
- 5 shows an alternative embodiment with a larger central area compared to FIG. 4, wherein in the embodiment the mean grid widths of grid openings located after different radial positions are at least approximately the same
- FIG. 6 shows an alternative embodiment of a flow rectifier with a radial pitch of the radial webs
- FIG. 8 shows a further alternative embodiment of a flow rectifier in which the closed center section is formed by the meeting point of the radial webs, and FIG. 8 shows a further alternative embodiment variant of a flow rectifier with a discontinuous envelope surface of the grid structure;
- FIG. 9b shows an embodiment of a flow rectifier with only slightly convexly curved grating structures compared to the embodiments described above.
- like elements and elements having the same function are denoted by the same reference numerals.
- a fan assembly 1 which comprises a fan formed as an axial fan (here an external rotor rotor) 2, which has a plurality of circumferentially juxtaposed paddle wheels 3, which are arranged on a hub 4.
- the fan 2 more precisely the Paddle wheels 3 rotate about an axis of rotation 5.
- the fan 2 is disposed within an axial flow channel 6, which limits a flow inlet opening 7 at its upper end in the plane of the drawing.
- the flow inlet opening 7 of the flow channel 6 is associated with a flow rectifier 8, which is fixed in the embodiment shown in front of the flow inlet opening 7 on a mounting plate 9.
- the flow rectifier 8 is arranged so that its axial longitudinal central axis is aligned axially with the axis of rotation 5.
- the flow rectifier 8 is characterized by a closed central portion 10, here by way of example of plastic, which is formed in the concrete embodiment as a one-piece injection molded part with the closed central portion 10 radially outwardly enclosing grid structure 1 first
- the lattice structure 1 1 is formed in the concrete embodiment of a plurality of intersecting webs, namely from radially outward to radially inwardly extending radial webs 12 and of these approximately at 90 ° angle ( ⁇ 10 °) crossing, arranged concentrically to the axis of rotation 5 , circular circumferential webs 13.
- the suction-side outer surface of the lattice structure bounds a (shell) lateral surface of a geometric body, in the concrete embodiment of a Kugelabsacrificingstumpfes, i. a spherical disk.
- the radial webs 12 therefore extend not only in the radial but also in the axial direction, here in the direction of the suction direction, so that the convexly curved three-dimensional body is obtained.
- the radial webs 12 extend from an annular edge web 14, with which the flow rectifier 8 rests on the mounting plate 9 radially inward to the non-permeable, closed central portion 10th
- An axial height H of the flow rectifier 8, measured along the axis of rotation 5 is measured from a center of the suction-side outer surface of the closed central portion 10 to a center of an outlet opening 15 of the flow rectifier 8, which is bounded by an annular outlet opening edge 16, which in turn in the concrete Embodiment of the edge web 14 is formed.
- the outlet opening 15 has a diameter D A , which corresponds substantially to the diameter of the flow channel.
- the paddle wheels 3 end in the radial direction shortly before the inner circumference of the flow channel 6, so that in approximation, the outer diameter of the fan wheel 1 corresponds to the diameter D A.
- the condition for the axial height H is: 0.05 ⁇ H / D A ⁇ 0.5.
- a closed central portion 10 is formed as a flat plate, the suction-side outer surface is substantially in a radial plane, that is arranged parallel to the outlet opening 15. 2, a section of the lattice structure 1 1 is shown in an enlarged view. Evident is the substantially slightly trapezoidal cross-sectional area of the lattice structure 1 1 limited lattice openings 17.
- the lattice openings 17 are concretely limited by the radial webs extending in the radial direction and in the concrete embodiment in the axial direction and the concentrically ange- arranged circumferential webs 13, wherein circumferential webs and radial webs meet at an angle ⁇ of about 90 ° ⁇ 10 ° deviation.
- the Gittestege have a substantially axially extending groove depth T s and a web thickness D s .
- the grid openings 17 have a diagonal manner W D , a mean radial width W R (with respect to a grid opening average distance between two circumferential webs arranged next to one another in the radial direction) and a mean circumferential width Wu (with reference to a grid opening having a mean distance between two inlets) Circumferential direction juxtaposed radial webs).
- W D a mean radial width
- Wu mean circumferential width
- both an equal pitch of the radial webs in the circumferential direction and an uneven pitch of the circumferential webs in the radial direction is realized.
- the mean circumferential width of each arranged in a ring grid openings is constant in the embodiment shown.
- FIG. 3 shows a fan arrangement 1 designed as a tube fan arrangement, with a tubular flow channel 6 in which a fan 2 is arranged.
- the flow channel 6 defines a flow inlet opening 7, which is associated with a flow rectifier 8.
- This flow rectifier 8 also has a closed central section 10, which is surrounded by a lattice structure 1 1, which limits a lateral surface of a Kalottenstumpfes.
- the flow straightener 8 of Fig. 3 is shown in an enlarged view. Evident is the closed, as in the embodiment of FIG. 1 spaced apart axially from the outlet opening 15 central portion 10, run radially on the radial webs 12.
- the flow rectifier 8 comprises two types of radial webs, namely the radial webs arranged in an inner ring, which delimit comparatively large grid openings, and radially outer, radially and axially extending radial webs, which are crossed by concentrically arranged Um 13. It can be seen that the circumferential webs 13 are conically inclined radially inwards and thus guide the air flow in the direction of the axis of rotation.
- the embodiment of a flow rectifier 8 according to FIG. 5 differs from the preceding embodiments in that the average circumferential grid width U is at least approximately the same for all grid openings 11. This is achieved in that the radial webs do not run continuously in the radial direction, but that in the radial direction side by side arranged radial webs are arranged offset in the direction of each other, so that the resulting ring rows of grid openings have a different number of grating openings.
- the central portion 10 also serves as an injection point 18 for the one-piece production of the flow rectifier as a plastic injection molded part.
- the embodiment of a flow rectifier 8 according to FIG. 6 differs from the exemplary embodiment according to FIG. 10 in that here the number of grid openings in the grid opening rings is the same, since the radial webs 12 to extend radially continuous star-shaped on the closed central region 10. As a result, the circumferential grid widths Wu vary from grid openings adjacent in the radial direction.
- the Radialstegtiefen- extent varies.
- two of the lattice structure 1 1 have two radially adjacently arranged discontinuously interconnected shell envelope surfaces of geometric bodies.
- the discontinuity is due to the fact that the radial webs are increased in the transition region in the radial direction or protrude radially, i. to form an overhang.
- the closed central section 10 is formed by a meeting point 19 of the radial webs 12, which in the specific exemplary embodiment only pass by way of example up to the edge web 14.
- the lattice structure 1 1 is only slightly convexly curved, but, as can be seen, a three-dimensional geometric shape is realized.
- the flow rectifier 8 is a tube of a tubular fan assembly attachable with an end-side cylinder portion 20 which simultaneously axially spaced from the lattice structure 1 1 forms the outlet opening edge 16, which limits the outlet opening 15 from which the closed central portion 10 is axially spaced.
- All the exemplary embodiments described above can likewise be provided with a cylinder section 20, in particular in order to then insert this into a flow channel, in order then to possibly push it there, as in the embodiment according to FIGS. 9a and 9b to releasably fix via locking means 21.
- a completely flat configuration of the grid structure can also be realized, i. the suction-side outer surface of the lattice structure lies in a radial plane. Due to the provision of the cylinder portion 20 then the closed central portion is still spaced from the outlet opening.
- the flow rectifier shown can be used to completely accommodate a fan, in particular to protect this filigree training from damage.
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014102370.6A DE102014102370A1 (en) | 2014-02-24 | 2014-02-24 | Flow straightener and fan arrangement with flow straightener |
PCT/EP2014/078517 WO2015124237A1 (en) | 2014-02-24 | 2014-12-18 | Flow rectifier and fan assembly having a flow rectifier |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3111094A1 true EP3111094A1 (en) | 2017-01-04 |
EP3111094B1 EP3111094B1 (en) | 2018-01-17 |
Family
ID=52358743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14828026.6A Active EP3111094B1 (en) | 2014-02-24 | 2014-12-18 | Flow rectifier and fan assembly having a flow rectifier |
Country Status (3)
Country | Link |
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EP (1) | EP3111094B1 (en) |
DE (1) | DE102014102370A1 (en) |
WO (1) | WO2015124237A1 (en) |
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-
2014
- 2014-02-24 DE DE102014102370.6A patent/DE102014102370A1/en not_active Withdrawn
- 2014-12-18 WO PCT/EP2014/078517 patent/WO2015124237A1/en active Application Filing
- 2014-12-18 EP EP14828026.6A patent/EP3111094B1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4174320A1 (en) * | 2021-10-28 | 2023-05-03 | Wobben Properties GmbH | Ventilator device, generator, wind turbine and air flow guiding device for noise and pressure-optimized supplying an air stream to an inlet nozzle of a ventilator, |
Also Published As
Publication number | Publication date |
---|---|
WO2015124237A1 (en) | 2015-08-27 |
DE102014102370A1 (en) | 2015-08-27 |
EP3111094B1 (en) | 2018-01-17 |
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