EP3401547B1 - Niederdruck-zentrifugalgebläse - Google Patents

Niederdruck-zentrifugalgebläse Download PDF

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Publication number
EP3401547B1
EP3401547B1 EP18171088.0A EP18171088A EP3401547B1 EP 3401547 B1 EP3401547 B1 EP 3401547B1 EP 18171088 A EP18171088 A EP 18171088A EP 3401547 B1 EP3401547 B1 EP 3401547B1
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EP
European Patent Office
Prior art keywords
fan
blade
inlet
outlet
called
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.)
Active
Application number
EP18171088.0A
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English (en)
French (fr)
Other versions
EP3401547A1 (de
EP3401547C0 (de
Inventor
Marc SANCHEZ
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.)
VTI
VTI SAS
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VTI
VTI SAS
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Publication date
Application filed by VTI, VTI SAS filed Critical VTI
Publication of EP3401547A1 publication Critical patent/EP3401547A1/de
Application granted granted Critical
Publication of EP3401547B1 publication Critical patent/EP3401547B1/de
Publication of EP3401547C0 publication Critical patent/EP3401547C0/de
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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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F04D17/168—Pumps specially adapted to produce a vacuum

Definitions

  • exhaust fans designed for total pressures greater than 500 Pa are used for extracting air at total pressures less than 150 Pa.
  • these fans are not designed for extracting air at total pressures below 150 Pa, they remain noisy and their efficiency is reduced.
  • An aim of the present invention is to remedy these drawbacks.
  • Another aim of the present invention is to propose a fan having better efficiency compared to fans of the state of the art.
  • At least one of the aforementioned objectives is achieved by a centrifugal reaction fan according to claim 1.
  • Such an inlet pitch angle makes it possible to reduce noise and increase fan efficiency at total pressures less than 150 Pa.
  • the height of at least one blade on the outlet edge side can be between 60 mm and 180 mm.
  • the motor can be connected to the lower flange on which at least one, in particular all, of the fan blade(s) are arranged.
  • the fan 100 includes a radius 202 1 , called an inlet radius, corresponding to the radius of the circle 204 1 passing through the inlet edges 110 1 of all the blades 108.
  • the inlet radius 202 1 is between 90 mm and 130 mm, in particular equal to 113 mm.
  • the fan 100 includes a radius 202 2 , called an outlet radius, corresponding to the radius of the circle 204 2 passing through the outlet edges 110 2 of all the blades 108.
  • the outlet radius 202 2 is between 150 mm and 250 mm, in particular equal to 209 mm.
  • the blade 300 can be produced by machining or foundry.
  • the device 400 is intended for the extraction of air at total pressures less than 150 Pa.
  • the device 400 includes the fan 100 of the FIGURES 1 and 2 .
  • the device 400 can be arranged in an air extraction installation in a residential building for example.
  • FIGURES 5a and 5b are schematic representations of a non-limiting example of a ventilation device according to the invention.
  • the ventilation device 500 includes the fan 100 of the FIGURES 1 and 2 arranged in a structure 502.
  • the structure 502 comprises an air inlet opening 504 provided for the passage of air with a view to its extraction by the fan 100.
  • the device 500 comprises a tap 506 provided to connect the opening of air inlet 504 to an ventilation duct, for example of a ventilation installation comprising the device 500.
  • the structure 502 also includes an air outlet opening 508 located opposite the fan 100 and extends radially around the fan 100.
  • the air outlet opening 508 covers 95% of the perimeter of the fan 100.
  • the device 500 comprises two removable feet 510 arranged to support the structure 502.
  • the device 500 further comprises a motor 512, arranged in the structure 502, and connected to the fan 100 by a transmission shaft 514.
  • the motor 512 is designed to drive the rotation of the fan 100, in particular at a speed between 300 rev /min and 900 rpm.
  • the device 500 can be arranged on the roof of a building and connected to the aeraulic network of said building.

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

Claims (12)

  1. Zentrifugallüfter (100), der für das Absaugen von Luft bei einem Gesamtdruck von weniger als 150 Pa bereitgestellt ist, umfassend:
    - einen sogenannten unteren Flansch (102), der kreisförmig ist, und einen sogenannten oberen Flansch (104), und
    - eine Vielzahl von Schaufeln (108; 300), die zwischen den Flanschen (102; 104) angeordnet sind, jede Schaufel (108,300) umfassend einen Rand (1101; 3021), den sogenannten Einlassrand, der sich zu der Mitte des Lüfters (100) hin befindet, und einen Rand (1102;3022), den sogenannten Auslassrand, der sich am Rand des Lüfters (100) befindet;
    wobei jede Schaufel gekrümmt ist, sodass der Lüfter (100) ein Strahllüfter ist, wobei, für jede Schaufel (108;300):
    - ein Radius (2021), der sogenannte Einlassradius, der zwischen der Mitte des Lüfters (100) und dem Einlassrand (1101;3021) der Schaufel (108;300) definiert ist, zwischen 90 mm und 130 mm ist, und
    - ein Radius (2022), der sogenannte Auslassradius, der zwischen dem Mitte des Lüfters (100) und dem Auslassrand (1102;3022) der Schaufel (108;300) definiert ist, zwischen 150 mm und 250 mm ist, dadurch gekennzeichnet, dass für jede Schaufel:
    - ein Winkel (2062), der sogenannte Auslasskeilwinkel, gebildet durch:
    ∘ den Auslassradius (2022), und
    ∘ die Tangente (2082) an die Schaufel (108;300) an dem Auslassrand (1102;3022),
    zwischen 70° und 80° ist.
  2. Lüfter (100) nach dem vorherigen Anspruch, dadurch gekennzeichnet, dass für jede Schaufel (108; 300) ein Winkel (2061), der sogenannte Einlasskeilwinkel, gebildet durch:
    - den Einlassradius (2021) und
    - die Tangente (2081) an die Schaufel (108;300) an dem Einlassrand (1101;3021), zwischen 60° und 75° ist.
  3. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Einlassradius (2021) jeder Schaufel (108; 300) zwischen Folgenden ist:
    - einerseits 90 mm, insbesondere 100 mm, noch mehr besonders 110 mm, und
    - auf der anderen Seite 130 mm, insbesondere 120 mm, noch mehr besonders 115 mm.
  4. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Auslassradius (2021) jeder Schaufel (108; 300) zwischen Folgenden ist:
    - einerseits 150 mm, insbesondere 170 mm, mehr besonders 180 mm, noch mehr besonders 200 mm, und
    - andererseits 250 mm, insbesondere 230 mm, mehr besonders 220 mm, noch mehr besonders 212 mm.
  5. Lüfter (100) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Einlasskeilwinkel (2061) jeder Schaufel (108;300) zwischen Folgenden ist:
    - einerseits 60°, insbesondere 65°, und
    - andererseits 75°, insbesondere 73°.
  6. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass er eine ungerade Anzahl von Schaufeln (108;300) zwischen 5 und 11, insbesondere 7, umfasst.
  7. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Höhe (3041) jeder Schaufel (108; 300) auf der Seite des Einlassrands (1101;3021) zwischen 60 mm und 180 mm ist.
  8. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Höhe (3042) jeder Schaufel (108; 300) auf der Seite des Auslassrands (1102;3022) zwischen 60 mm und 180 mm ist.
  9. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der obere Flansch eine Öffnung (106), einen sogenannten Ansaugkiemen, umfasst, der für den Durchgang von Luft in einer Richtung bereitgestellt ist, die im Wesentlichen senkrecht zu dem oberen Flansch (104) verläuft, wobei der Ansaugkiemen (106) kreisförmig ist und einen Durchmesser zwischen 200 mm und 400 mm, insbesondere gleich 315 mm, aufweist.
  10. Lüfter (100) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass seine Drehzahl zwischen 300 U/min und 900 U/min ist.
  11. Vorrichtung (400), die für das Absaugen von Luft bei einem Gesamtdruck von weniger als 150 Pa bereitgestellt ist, umfassend:
    - mindestens einen Lüfter (100) nach einem der vorherigen Ansprüche,
    - mindestens einen Motor (402), der bereitgestellt ist, um die Drehung des mindestens einen Lüfters (100) anzutreiben.
  12. Lüftungsvorrichtung (500), die für das Absaugen von Luft bei einem Gesamtdruck von weniger als 150 Pa bereitgestellt ist, umfassend mindestens einen Lüfter (100) nach einem der Ansprüche 1 bis 10, der in einer Struktur (502) angeordnet ist,
    die Struktur (502) umfassend für mindestens einen Lüfter (100):
    - eine Einlassöffnung (504) für Luft zu dem Lüfter (100), die axial in Bezug auf den Lüfter (100) angeordnet ist,
    - eine Auslassöffnung (508) von Luft von dem Lüfter (100), die radial in Bezug auf den Lüfter (100) angeordnet ist,
    dadurch gekennzeichnet, dass die radiale Auslassöffnung (508) gegenüber dem Lüfter (100) angeordnet ist und sich um den Lüfter (100) herum über mindestens 50 % des Umfangs des Lüfters (100) erstreckt.
EP18171088.0A 2017-05-11 2018-05-07 Niederdruck-zentrifugalgebläse Active EP3401547B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1754117A FR3066235B1 (fr) 2017-05-11 2017-05-11 Ventilateur centrifuge d'extraction d'air a basse pression.

Publications (3)

Publication Number Publication Date
EP3401547A1 EP3401547A1 (de) 2018-11-14
EP3401547B1 true EP3401547B1 (de) 2024-07-03
EP3401547C0 EP3401547C0 (de) 2024-07-03

Family

ID=59974513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18171088.0A Active EP3401547B1 (de) 2017-05-11 2018-05-07 Niederdruck-zentrifugalgebläse

Country Status (3)

Country Link
EP (1) EP3401547B1 (de)
ES (1) ES2987950T3 (de)
FR (1) FR3066235B1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE822316A (fr) * 1974-11-18 1975-03-14 Extracteur de gaz a jet vertical.
JP2004183543A (ja) * 2002-12-03 2004-07-02 Japan Servo Co Ltd 遠心ファンの羽根車
EP1455094A1 (de) * 2003-03-04 2004-09-08 Ziehl-Abegg AG Radiallüfterrad
DE10313054B4 (de) * 2003-03-24 2012-10-04 Motoren Ventilatoren Landshut Gmbh Radialgebläse
EP1984683A4 (de) * 2006-10-19 2015-09-16 Lg Electronics Inc Blas-turboventilator und kühlvorrichtung damit
US9995311B2 (en) * 2013-05-10 2018-06-12 Lg Electronics Inc. Centrifugal fan

Also Published As

Publication number Publication date
FR3066235A1 (fr) 2018-11-16
EP3401547A1 (de) 2018-11-14
FR3066235B1 (fr) 2019-11-22
EP3401547C0 (de) 2024-07-03
ES2987950T3 (es) 2024-11-18

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