WO2017186565A1 - Dispositif d'évacuation des émnanations doté d'un ventilateur diagonal - Google Patents

Dispositif d'évacuation des émnanations doté d'un ventilateur diagonal Download PDF

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Publication number
WO2017186565A1
WO2017186565A1 PCT/EP2017/059387 EP2017059387W WO2017186565A1 WO 2017186565 A1 WO2017186565 A1 WO 2017186565A1 EP 2017059387 W EP2017059387 W EP 2017059387W WO 2017186565 A1 WO2017186565 A1 WO 2017186565A1
Authority
WO
WIPO (PCT)
Prior art keywords
axial
sectional area
flow
flow channel
cross
Prior art date
Application number
PCT/EP2017/059387
Other languages
German (de)
English (en)
Inventor
Daniel Gebert
Jens Müller
Oliver Haaf
Original Assignee
Ebm-Papst Mulfingen Gmbh & 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=58632966&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2017186565(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ebm-Papst Mulfingen Gmbh & Co. Kg filed Critical Ebm-Papst Mulfingen Gmbh & Co. Kg
Priority to ES17719544T priority Critical patent/ES2927704T3/es
Priority to EP17719544.3A priority patent/EP3334942B1/fr
Priority to PL17719544.3T priority patent/PL3334942T3/pl
Publication of WO2017186565A1 publication Critical patent/WO2017186565A1/fr

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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal 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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • 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
    • F04D29/4226—Fan casings
    • 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
    • F04D29/4226—Fan casings
    • F04D29/4253—Fan casings with axial entry and discharge
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the invention relates to a fume extraction device having a suction region and a downstream in the flow direction of the suction and flow-connected flow channel having an outlet opening for blowing out the extracted air.
  • the discharge opening is usually followed by a pipe which can be led into an area outside the building.
  • Vapor extraction devices with a suction area in which fat filters are usually integrated, and an adjoining flow channel are known from the prior art.
  • suction conventionally double-flow forward curved radial fans are used.
  • the energy consumption and, depending on the version, the noise of the extractor devices are high in such a structure.
  • the installation space available for the fan is extremely limited by the flow channel, which is usually narrow for design reasons.
  • the large suction area covered in practice lying below the extractor stove. The air sucked in via the intake area is channeled into the significantly narrower flow channel, so that a substantial portion of the flow from the intake area enters the flow channel laterally and is deflected for the first time in an axial direction, ie in the center direction of the withdrawal channel.
  • the centrifugal fan draws air radially from the flow channel and blows it out axially.
  • the air is deflected for the second time at right angles.
  • Each deflection of the air volume flow results in further pressure losses and thus a reduced efficiency, as the fan power has to be adjusted.
  • the air is sucked unfavorably in terms of flow from the radial direction in a region adjacent to the flow channel wall. Due to the limited space, the air is additionally accelerated during radial suction. The 90 ° deflection at the entrance to the radial fan results in significant pressure losses.
  • the invention is therefore an object of the invention to provide a fume extraction device, which ensures a lower power consumption and optionally reduced noise at the same withdrawal power.
  • a vapor extraction device is provided with an intake region, a flow channel adjoining the intake region in the flow direction and a flow channel, and an outlet port. tion, wherein a Ansaug Hochsqueritess Stret-sectional area and a
  • Flow channel cross-sectional area is. Disposed within the flow passage is a diagonal fan having an axial inlet and an axial outlet which, in use, axially draws air axially from the flow passage via the axial inlet and expels axially through the axial outlet into the outlet port fluidly connected to the outlet.
  • Outlet opening cross-sectional area corresponds.
  • the diagonal ventilator with its outlet is mounted directly on the outlet opening in order to provide a flush transition between the outlet on the fan and the outlet opening on the flow channel.
  • the connection of the diagonal fan often takes place directly on a pipe connected to the outlet opening.
  • the Ansaugquerwolves s Formula by a factor of 2 to 20, preferably 3 to 10, more preferably 4 to 6 greater than the flow channel cross-sectional area. Realized many times in practice
  • Cross-sectional sizes of the flow channel are eg at 240mm x 240mm.
  • Outlet openings are usually fixed in practice to a (pipe) diameter of 150mm.
  • the diagonal fan on a Diagonallsymmetricerrad with circumferential cover plate is placed on the diagonal fan on the side facing the inlet and covers the otherwise free axial
  • the shroud extends parallel to an axial centerline detached from the shroud
  • a refinement of the invention is favorable, in which an inlet nozzle, which determines the axial inlet, is arranged on the diagonal fan with a flow cross-sectional area which decreases in the axial flow direction. It is advantageous, the inlet nozzle in one piece with the
  • the inlet nozzle extends in the axial direction into the diagonal fan, so that an axial overlap region is formed between the diagonal fan and the inlet nozzle.
  • the inlet nozzle is at least partially surrounded by the cover plate, in particular the inlet parallel to the axial center line extending portion.
  • a flow-guiding guide rail is arranged on the inlet side of the inlet nozzle, which contributes in particular to reducing the noise emissions and minimizes disturbing low-frequency tones.
  • the inlet nozzle has a maximum in an advantageous embodiment Inlet flow area, which determines a factor of 0.15-0.4 of the maximum flow channel area.
  • an idler wheel which determines the axial outlet, increases in the axial flow direction on the diagonal fan
  • Flow cross-sectional area is arranged.
  • the flow cross-sectional area tapers to the outlet opening cross-sectional area.
  • the Nachleitrad seen in the axial flow direction is arranged after the Diagonallsymmetricerrad and allows an increase in the axial flow velocity. It thus contributes to increasing the efficiency. It is also advantageous here, the Nachleitrad in one piece with the
  • the diagonal fan has in one embodiment, a multi-part housing, via which it is attached to the flow channel.
  • the first part of the housing is formed by the inlet nozzle, the second part by the Nachleitrad.
  • part of the invention is the use of a diagonal fan in a fume extractor as described above.
  • the diagonal fan may include any or all of the disclosed features, as far as this is technically possible.
  • FIG. 1 shows an exemplary schematic representation of a vapor extraction device according to the prior art
  • Fig. 2 is a side sectional view of a fume extractor device according to the invention
  • FIG. 3 is a diagram illustrating the pressure profile over the flow rate of extractor device.
  • FIG. 1 schematically shows, by way of example, an extractor hood 200 according to the prior art with a double-flow radial fan 210.
  • the air flow generated by the radial fan 210 is shown with arrows S, it being well recognized that the air flow is deflected several times.
  • a first 90 ° deflection takes place in the edge section between the flow channel and the radial fan 210 when entering the suction section 211 and a second 90 ° deflection within the radial fan 210 before the flow exits at the blow-out section 212.
  • FIG. 2 shows a fume extraction device 1 with an intake region 2, a flow-connected flow channel 3 immediately adjacent to the intake region 2 in the flow direction and a square flow channel 3 and an outlet 4 opening into a tube 23.
  • the diagonal fan 5 is attached to the wall side. The generated during operation of the diagonal fan 5 air flow is shown by the arrows P.
  • the suction area cross-sectional area of the suction area 2 is many times greater than the flow channel cross-sectional area of the flow channel 3, the outlet opening cross-sectional area of the outlet opening 4 is smaller than the flow channel cross-sectional area of the flow channel 3.
  • the diagonal fan 5 has the axial inlet 6 in the direction of the suction area 2, over which in operation Air is sucked axially from the flow channel 3 and blown through the axial outlet 7 directly into the tube 23.
  • the axial outlet 7 is directly connected to the outlet opening 4 and the pipe 23 in connection.
  • the outlet cross-sectional area of the outlet ses 7 of the diagonal fan 5 corresponds to the
  • the diagonal fan 5 has a structure with a motor 18, which is received and fastened centrally on a motor mount 20, around which the pressure chamber is guided.
  • the motor 18 drives an upstream diagonal fan 8 which has a peripheral cover plate 9 which partially covers axially exposed edges of the diagonal fan blades 19.
  • the cover plate 9 extends in the inlet section 21 parallel to the axial center line and in
  • the axial inlet 6 is formed by the inlet nozzle 10, whose flow cross-sectional area decreases in the axial flow direction.
  • the inlet nozzle 10 has an inlet contour 24 which extends into the diagonal fan 8 in the axial direction and forms the axial overlap area 11 with the inlet section 21 of the cover plate 9. Between the inlet contour 24 of the inlet nozzle 10 and the inlet portion 21 of the cover plate 9, a circumferential radial gap is provided.
  • the axial distance between the axial edges of the diagonal fan blades 19 and the axial end of the inlet contour 24 of the inlet nozzle 10 is very small and corresponds to 10% of the axial extent of the inlet contour 24 of the inlet nozzle 10.
  • the inlet nozzle 10 forms a maximum inlet flow area which is 40% of the inlet diameter
  • Flow channel cross-sectional area corresponds. Furthermore, the inlet nozzle 10 forms a first housing part of the diagonal fan 5. The second
  • the Nachleitrad 12 forms the axial outlet 7 and has the shape of the pressure chamber mitbearrangedde flow guide elements 22 which extend around the motor 18 to the outlet 7 and thereby in the axial flow direction of the Increase flow cross-sectional area to produce a venturi effect.
  • the housing outer wall of the follower wheel 12, which conducts the flow runs parallel to the axial center line.
  • Figure 3 shows the lower pressure loss when using the diagonal fan 5 shown in Figure 2 in a fume extractor 1 over the prior art solutions, with graphs 66 and 77 incorporated in a centrifugal fan and fan in a fume extractor and the graphs 88 and 99 refer to a diagonal fan 5 and a diagonal fan 5 in the installed state as shown in FIG.
  • the two graphs 88 and 99 are much closer together, especially at higher flow rates.
  • a lead-sheet may be disposed upstream of the inlet nozzle, even if not shown in the figures.
  • the diagonal fan can also be attached only on the axial side of the flow channel and be spaced in the radial direction to the flow channel.

Abstract

L'invention concerne un dispositif d'évacuation des émanations, comprenant une zone d'aspiration (2), un canal d'écoulement (3) se raccordant à la zone d'aspiration (2) dans le sens d'écoulement et assurant la liaison fluidique, ainsi qu'un orifice de sortie (4) ; une aire de section de la zone d'aspiration étant supérieure à une aire de section du canal d'écoulement, et une aire de section de l'orifice de sortie étant inférieure à l'aire de section du canal d'écoulement ; un ventilateur diagonal (5) doté d'une entrée (6) axiale et d'une sortie (7) axiale étant implanté dans le canal d'écoulement (3), lequel ventilateur diagonal assurant, en mode de fonctionnement d'aspiration, par son entrée axiale (6) l'aspiration axiale de l'air provenant du canal d'écoulement (3) et assurant axialement par sa sortie axiale (7) l'éjection de cet air dans l'orifice de sortie (4) qui est en liaison fluidique avec la sortie (7).
PCT/EP2017/059387 2016-04-28 2017-04-20 Dispositif d'évacuation des émnanations doté d'un ventilateur diagonal WO2017186565A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES17719544T ES2927704T3 (es) 2016-04-28 2017-04-20 Dispositivo de extracción de humos con ventilador diagonal
EP17719544.3A EP3334942B1 (fr) 2016-04-28 2017-04-20 Hotte avec une ventilateur diagonal
PL17719544.3T PL3334942T3 (pl) 2016-04-28 2017-04-20 Układ okapu kuchennego z wentylatorem diagonalnym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016107921.9A DE102016107921A1 (de) 2016-04-28 2016-04-28 Dunstabzugsvorrichtung mit Diagonalventilator
DE102016107921.9 2016-04-28

Publications (1)

Publication Number Publication Date
WO2017186565A1 true WO2017186565A1 (fr) 2017-11-02

Family

ID=58632966

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/059387 WO2017186565A1 (fr) 2016-04-28 2017-04-20 Dispositif d'évacuation des émnanations doté d'un ventilateur diagonal

Country Status (5)

Country Link
EP (1) EP3334942B1 (fr)
DE (1) DE102016107921A1 (fr)
ES (1) ES2927704T3 (fr)
PL (1) PL3334942T3 (fr)
WO (1) WO2017186565A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109973438A (zh) * 2019-04-24 2019-07-05 宁波方太厨具有限公司 一种离心风机蜗壳
WO2021194409A1 (fr) * 2020-03-24 2021-09-30 Swegon Operations Ab Unité de traitement d'air dotée de disque de stator de guidage d'écoulement
WO2022103868A1 (fr) * 2020-11-10 2022-05-19 Greenheck Fan Corporation Ensemble ventilateur efficace
AU2020233744B2 (en) * 2019-09-20 2023-06-29 ResMed Pty Ltd System and Method for Reducing Noise in a Flow Generator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129263A1 (de) 2021-11-10 2023-05-11 Berbel Ablufttechnik Gmbh Dunstabzugshaube
DE202022101494U1 (de) 2021-11-10 2022-11-03 Berbel Ablufttechnik Gmbh Dunstabzugshaube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH213309A (de) * 1939-10-20 1941-01-31 Wetter Wilhelm Ventilator.
US5983888A (en) * 1999-04-07 1999-11-16 Whirlpool Corporation Low noise cooker hood
US6752711B1 (en) * 2003-07-16 2004-06-22 Peter Yeung Motor housing for range hood

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047489A1 (de) * 2010-10-06 2012-04-12 Ruck Ventilatoren Gmbh Wandeinbaugebläse
US9897111B2 (en) * 2011-05-20 2018-02-20 Dyna-Tech Sales Corporation Aspirating induction nozzle with flow transition
DE102012019419A1 (de) * 2012-10-04 2014-04-10 Ruck Ventilatoren Gmbh Diagonal-Ventilator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH213309A (de) * 1939-10-20 1941-01-31 Wetter Wilhelm Ventilator.
US5983888A (en) * 1999-04-07 1999-11-16 Whirlpool Corporation Low noise cooker hood
US6752711B1 (en) * 2003-07-16 2004-06-22 Peter Yeung Motor housing for range hood

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109973438A (zh) * 2019-04-24 2019-07-05 宁波方太厨具有限公司 一种离心风机蜗壳
CN109973438B (zh) * 2019-04-24 2021-01-19 宁波方太厨具有限公司 一种离心风机蜗壳
AU2020233744B2 (en) * 2019-09-20 2023-06-29 ResMed Pty Ltd System and Method for Reducing Noise in a Flow Generator
WO2021194409A1 (fr) * 2020-03-24 2021-09-30 Swegon Operations Ab Unité de traitement d'air dotée de disque de stator de guidage d'écoulement
WO2022103868A1 (fr) * 2020-11-10 2022-05-19 Greenheck Fan Corporation Ensemble ventilateur efficace
US11668314B2 (en) 2020-11-10 2023-06-06 Greenheck Fan Corporation Efficient fan assembly
US11971047B2 (en) 2020-11-10 2024-04-30 Greenheck Fan Corporation Efficient fan assembly

Also Published As

Publication number Publication date
ES2927704T3 (es) 2022-11-10
EP3334942A1 (fr) 2018-06-20
PL3334942T3 (pl) 2022-10-24
EP3334942B1 (fr) 2022-08-10
DE102016107921A1 (de) 2017-11-02

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