EP3298284A1 - Grille de guidage d'écoulement plane - Google Patents

Grille de guidage d'écoulement plane

Info

Publication number
EP3298284A1
EP3298284A1 EP16723750.2A EP16723750A EP3298284A1 EP 3298284 A1 EP3298284 A1 EP 3298284A1 EP 16723750 A EP16723750 A EP 16723750A EP 3298284 A1 EP3298284 A1 EP 3298284A1
Authority
EP
European Patent Office
Prior art keywords
strömungsleitgitter
radial
webs
axial
strömungsleitgitters
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
Application number
EP16723750.2A
Other languages
German (de)
English (en)
Other versions
EP3298284B1 (fr
Inventor
Zhang BINYUAN
Christian Haag
Carsten HÜBNER
Björn Sudler
Manuel Vogel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP3298284A1 publication Critical patent/EP3298284A1/fr
Application granted granted Critical
Publication of EP3298284B1 publication Critical patent/EP3298284B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04D29/40—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
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/40—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
    • F04D29/444—Bladed diffusers
    • 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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Definitions

  • the invention relates to a Strömungsleitgitter formed as Vorleitgitter for arrangement at the intake of a fan,
  • Vorleitgitter are known from the prior art in various designs and variants, in particular in a curved shape or as a spherical cap. Corresponding disclosures can be found, for example, in the patent applications DE 10 2014 116 047 A, EP 2 778 432 A1 or DE 1 052 624 B.
  • the derived from the applicant and known from the prior art Strömungsleitgitter or flow rectifiers work very well in practice, but require due to their curvature in the axial direction of a certain space in order to function optimally. In narrow installation conditions, the curved shape is therefore not always advantageous.
  • the invention is therefore based on the object to provide a Strömungsleitgitter that compared to the known from the prior art solutions in the axial direction has a smaller footprint, while maintaining the performance at least and the noise is at least not increased. It is another object of the invention to develop a fan with a corresponding Strömungsleitgitter to a compact unit.
  • a Strömungsleitgitter is designed as Vorleitgitter for arrangement at a suction of a fan proposed, which has an axial center line a lattice web structure, the circumferentially spaced radial webs and radially spaced coaxial peripheral webs and an outer ring comprises.
  • the inflow side extends flat and parallel to one of its radial planes. The flat, planar extension allows utilization of the minimization of turbulence in the intake on the inflow side of the Strömungsleitgitters even in tight installation conditions.
  • the Strömungsleitgitter is flat and the ratio of its maximum outer diameter D 3 (inside width) to its axial total height H in a range of 6 - 25, preferably 10 - 15 is fixed.
  • the flat geometry in the mentioned value range leads to low construction heights of the flow guide on the fan and benefits takes a compact overall structure.
  • a central opening is formed with an inflow-side central diameter Di, wherein the ratio of the central diameter Di against a maximum outer diameter D 3 of the Strömungsleitgitters (inside diameter) in a range of 1 , 5-6.0, preferably 2.0-2.5.
  • the central opening is bounded radially on the outside by the first peripheral ridge and offers the possibility of arranging components of the connected fan in the region of the flow guide, so that, for example, the rotor bell extends axially into the flow guide and thus minimizes the axial assembly height of the fan together with the flow guide ,
  • first coaxial circumferential ridge has an extension from the inflow side to an outflow side, which is inclined ⁇ relative to the axial center line by an angle radially outward.
  • the second coaxial circumferential ridge viewed in the radial outward direction in an advantageous embodiment, has an extension from the inflow side to an outflow side, which is inclined radially inwards relative to the axial center line by an angle ⁇ .
  • the extensions of the first and second coaxial circumferential webs viewed in the radial outward direction form in an imaginary extension of their axial end points at a distance L from the inflow side an intersection which determines an intersection point diameter D 4 radially spaced from the axial center line, ie the circumferential webs are aligned with each other so that imaginary extensions of a connecting line of their respective end points intersect in a plane axially spaced from the Strömungsleitgitter.
  • the mutually facing circumferential webs generate a flow which is advantageous for the fan power and noise generation in a forward direction. certain radial distance to axial centerline.
  • the Strömungsleitgitter is characterized in that a ratio of the intersection diameter D against an outflow-side outer diameter D 3 of the Strömungsleitgitters is set in a range of 0.01 - 0.8.
  • the intersection diameter D 4 with respect to the axial distance of the intersection point L in a range of 0 - 1, 6 set.
  • the conditions of the invention ensure a supply and flow through the air sucked by the fan to and through the planar Strömungsleitgitter at a relative to curved versions not increased noise.
  • the Strömungsleitgitter invention is further provided in a favorable embodiment, that seen in the radial direction of the first and second coaxial circumferential webs each have an axial extent H1, H2 parallel to the axial center line whose relation to the axial height H to H1 ⁇ H2 ⁇ H is fixed , The axial extent of the radial webs increases over the respective radial length of the first peripheral ridge up to the outer ring.
  • the first and second coaxial circumferential webs seen in the radial direction, are advantageously curved in a convex manner in the direction of the axial center line.
  • the shape of the circumferential webs has a direct positive effect on the flow in the axial direction.
  • the Strömungsleitgitter has a plurality of radial webs, which are each spaced in a circumferential angle ⁇ of 0 - 20 °, preferably 15 °.
  • the number of radial webs is an influencing factor both on the performance of the Strömungsleitgitters and the noise generated by its use.
  • the grating structure of the Strömungsleitgitters on a geometry in which in an axial plan view of the inflow side between each adjacent radial webs and between the radially first and second coaxial circumferential webs meshes with a first diagonal extension Li and between each adjacent Radial webs and formed between the second coaxial circumferential ridge seen in the radial direction and the outer ring each mesh grid with a second diagonal extent L 2 , wherein a ratio of the diagonal extents Li ⁇ L 2 is fixed.
  • each grid meshes are formed with a second diagonal extent (L), wherein a ratio of the diagonal extents L 3 ⁇ L 4 is fixed.
  • the invention also encompasses a ventilator having a drive unit and a flow guide grid described above, which is characterized in that the drive unit extends at least in sections in the axial direction into an area of the flow guide grid in order to ensure the compact construction.
  • the ratio of the radial distance SPm between the radial outer edge of the drive unit and the outflow-side central diameter D 2 of the central opening and the inflow-side central diameter Di is smaller or equal to a value 0.15 is set.
  • Fig. 1 is a plan view of the inflow side of a Strömungsleitgitters
  • Fig. 2 is a side sectional view of one half of the Strömungsleitgitters of Fig. 1; 3 is a plan view of the inflow side of a Strömungsleitgitters.
  • FIG. 4 is a plan view of the downstream side of a Strömungsleitgitters.
  • FIG. 5 shows an installation situation of the Strömungsleitgitters on a fan in a side view.
  • Fig. 1 is a plan view of the inflow side of a Strömungsleitgitters 1 is shown.
  • the Strömungsleitgitter 1 is formed as Vorleitgitter for arrangement at the intake of a fan 50, as shown by way of example in Fig. 5.
  • a grid web structure with circumferentially spaced radial webs 2 and spaced radially and coaxially arranged circumferential webs 3, 4 and a the outer edge final outer ring 5 on.
  • a central opening 6 delimited by the innermost radial web 3 is provided.
  • FIG. 2 is a side sectional view of a half of the Strömungsleitgitters 1 of FIG. 1.
  • the lying in Fig. 2 above the inflow side of the Ström ungsleitg Itters 1 is planar flat and extends parallel to its radial plane, wherein all elements of the Strömungsleitgitters 1, ie the outer ring 5, the radial webs 2 and the peripheral webs 3, 4 end in a radial plane of the inflow side.
  • the radial webs 2 extend on the inflow side over a diameter D 6 , on the downstream side almost to the outer ring 5, which is determined in this area by the diameter D 3 .
  • the peripheral webs 3, 4 extend in the radial direction
  • the circumferential webs 3, 4 are curved convexly in the direction of the center line from the inflow side in the direction of the outflow side, wherein the radially inner circumferential ridge 3 has a curvature in the direction of the outflow side and the circumferential ridge 4 has a curvature in the direction of the inflow side.
  • the intersection 7 is radially spaced from the axial center line ML and extends circumferentially at the intersection diameter D 4 .
  • the axial height Hi of the innermost circumferential ridge 3 is smaller than the axial height H 2 of the second circumferential ridge 4, which in turn is smaller than the total axial height H of the Strömungsleitgitters 1, which is determined by the outer ring 5 in the embodiment shown.
  • the radial webs 2 are formed such that increases their axial height, starting from the innermost circumferential ridge 3 in the direction radially outward to the outer ring 5.
  • the ratio of the maximum outer diameter D 3 to the axial height H takes a value of 12, 14 a.
  • the ratio of the inflow-side central diameter Di to the maximum outer diameter D 3 is 2, 19.
  • the ratio of the intersection diameter D to the outflow-side outer diameter D 3 is set to a value of 0.74.
  • Inflow side takes a value of 1.55.
  • the ratio of the axial height H to the distance L to the inflow side is 0.47.
  • Figures 3 and 4 each show a plan view of the inflow side and outflow side of the Strömungsleitgitters 1 of Figures 1 - 2.
  • the lattice meshes determined by the radial webs 2 and peripheral webs 3, 4 each have a diagonal extension which is set so that the grid meshes lying further radially outwards are larger both on the inflow side and on the outflow side. For this reason, the ratio L 1 ⁇ L 2 applies on the inflow side, and the ratio L 3 ⁇ L 4 on the outflow side.
  • FIG. 5 shows an installation situation of the flow guide grid 1 from FIG. 1 on a ventilator 50 in a side view.
  • the fan 50 includes a motor having a rotor bell 51 with a diameter DM.
  • the rotor bell 51 extends into the central opening 6 of the Strömungsleitgitters 1, radially, however, a radial distance SPm between the radial outer edge of the rotor bell 51 and the
  • the Strömungsleitgitters invention 1 wherein the characteristics of the Strömungsleitgitters of Fig. 1 - 4 are provided with the reference numeral 200.
  • the positive effect of the inventive Strömungsleitgitters 1 with respect to a noise reduction in dBA shows especially at delivery figures (Phi) of 0.04 - 0.1.
  • the total pressure difference is particularly favorable for high delivery figures.
  • the invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use.
  • the number of peripheral webs is not limited to two, but any number of additional circumferential webs can be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne une grille de guidage d'écoulement conçue sous forme de grille de préguidage destinée à être disposée sur la zone d'aspiration d'un ventilateur, ladite grille de guidage d'écoulement comportant autour d'une ligne médiane axiale une structure porteuse de grille qui comprend des entretoises radiales disposées à une certaine distance les unes des autres dans la direction circonférentielle et des éléments de support circonférentiels coaxiaux situés à une certaine distance les uns des autres dans la direction radiale, ainsi qu'une bague externe, une face d'aspiration de la grille de guidage d'écoulement s'étendant dans un plan parallèle à un plan radial de la grille de guidage d'écoulement.
EP16723750.2A 2015-05-20 2016-05-19 Grille de guidage d'écoulement plane Active EP3298284B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015107907.0A DE102015107907A1 (de) 2015-05-20 2015-05-20 Ebenes Strömungsleitgitter
PCT/EP2016/061284 WO2016184970A1 (fr) 2015-05-20 2016-05-19 Grille de guidage d'écoulement plane

Publications (2)

Publication Number Publication Date
EP3298284A1 true EP3298284A1 (fr) 2018-03-28
EP3298284B1 EP3298284B1 (fr) 2020-07-08

Family

ID=54523907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16723750.2A Active EP3298284B1 (fr) 2015-05-20 2016-05-19 Grille de guidage d'écoulement plane

Country Status (5)

Country Link
US (1) US10590954B2 (fr)
EP (1) EP3298284B1 (fr)
CN (1) CN204783851U (fr)
DE (1) DE102015107907A1 (fr)
WO (1) WO2016184970A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023166276A1 (fr) * 2022-03-01 2023-09-07 Volution Ventilation Group Limited Dispositif de guidage d'écoulement de fluide

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DE102016221642A1 (de) 2016-11-04 2018-05-09 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Zargenvorrichtung für ein Kühlerlüftermodul, ein Kühlerlüftermodul mit einer Zargenvorrichtung und Fahrzeug mit einem solchen Kühlerlüftermodul
DE102017209291A1 (de) * 2017-06-01 2018-12-06 Ziehl-Abegg Se Ventilator und Vorleitgitter für einen Ventilator
CN110017302A (zh) * 2018-01-10 2019-07-16 青岛海尔智慧厨房电器有限公司 风机及油烟机
CN110145495A (zh) * 2019-06-11 2019-08-20 佛山市晟昊通风机有限公司 一种高效离心风机进风口的结构
CN112577104A (zh) * 2019-09-27 2021-03-30 青岛海信日立空调系统有限公司 一种空调器
CN112574787A (zh) * 2020-12-23 2021-03-30 浙江杭真能源科技股份有限公司 一种高炉煤气trt后脱硫设备及工艺
CN112628204B (zh) * 2021-01-11 2022-09-16 泛仕达机电股份有限公司 一种高效低噪的多层集流器及离心风机
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Publication number Priority date Publication date Assignee Title
WO2023166276A1 (fr) * 2022-03-01 2023-09-07 Volution Ventilation Group Limited Dispositif de guidage d'écoulement de fluide

Also Published As

Publication number Publication date
EP3298284B1 (fr) 2020-07-08
CN204783851U (zh) 2015-11-18
US10590954B2 (en) 2020-03-17
WO2016184970A1 (fr) 2016-11-24
DE102015107907A1 (de) 2016-11-24
US20180298916A1 (en) 2018-10-18

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