EP0627560B1 - Soufflante radiale - Google Patents

Soufflante radiale Download PDF

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Publication number
EP0627560B1
EP0627560B1 EP94107578A EP94107578A EP0627560B1 EP 0627560 B1 EP0627560 B1 EP 0627560B1 EP 94107578 A EP94107578 A EP 94107578A EP 94107578 A EP94107578 A EP 94107578A EP 0627560 B1 EP0627560 B1 EP 0627560B1
Authority
EP
European Patent Office
Prior art keywords
radial fan
fan according
blade edge
outer blade
disk
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.)
Expired - Lifetime
Application number
EP94107578A
Other languages
German (de)
English (en)
Other versions
EP0627560A1 (fr
Inventor
Reinhold Hopfensperger
Martin Geiger
Rudolf Tungl
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.)
Motoren Ventilatoren Landshut GmbH
Original Assignee
Alcatel SEL AG
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 Alcatel SEL AG filed Critical Alcatel SEL AG
Publication of EP0627560A1 publication Critical patent/EP0627560A1/fr
Application granted granted Critical
Publication of EP0627560B1 publication Critical patent/EP0627560B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/30—Vanes
    • 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
    • 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade

Definitions

  • the invention relates to a radial fan consisting of a housing a spiral inner contour and a closed impeller, whose diameter is much larger than its flow exit width and which consists of a support plate, a cover plate and in between arranged backward curved blades, and the blades are tapered inside out as well as their length on the supporting disc is greater than on the cover disc.
  • Such a radial fan is known (EP-A-410 271).
  • the known Radial blower is for use in a device for conveying a gaseous medium provided which is a large Has flow resistance. That means the gaseous medium a relatively high back pressure of 400 to 450 Pascal has overcome and yet with an average volume flow of 7 to 10 1 / s should be delivered.
  • blower If the known blower is now used for an application, where it works against very low back pressures (e.g. 80-100 Pascal) and delivers a high volume flow (e.g. 10 1 / s), it can happen that there is a noise - especially amplified by sound pressure peaks generated.
  • very low back pressures e.g. 80-100 Pascal
  • a high volume flow e.g. 10 1 / s
  • a radial impeller is also known (DE-U-93 03 711), which consists of a Carrying disc, a cover plate and arranged between them Shovels exist.
  • the Diameter about four times the flow exit width, and the Bucket width is constant.
  • the efficiency and the Increase power density With the well-known radial impeller technical problem to be solved, the efficiency and the Increase power density.
  • the publication in which this known The radial impeller has no information on whether it is in is arranged in a housing and what shape it may have could.
  • the technical problem underlying the invention now exists in improving the known radial fan in such a way that the Subjectively perceived as very disturbing sound pressure peaks avoided without increasing the air noise (noise level) at the same time becomes.
  • the impeller consists of the support disk 1, the cover plate 2 and the blades 3. It can, for example, from Be made of plastic.
  • the embodiment of the blade edge shown in Fig. 2 has the shape an obtuse-angled triangle with a rounded tip.
  • Triangle is not an isosceles triangle, because the the left half of the triangle is slightly narrower than the right half. That's why the angles are different, which the edges 4 and 5 with the Connection line 6 between the ends of support plate 1 and Cover plate 2 (a parallel to the axis of rotation of the impeller) lock in.
  • the angle alpha has 43 degrees and the Angle beta 36 degrees.
  • the rounded tip 7 has for example a radius of curvature of 2 mm.
  • the embodiment of the blade edge according to FIG. 3 differs 2 in that the cover plate 2nd has a smaller diameter than the support disk 1. This is the edge 5 is somewhat longer than in FIG. 2.
  • the embodiment of the blade edge according to FIG. 4 does not contain any straight areas as in previous embodiments, but them is an arched curve, which is asymmetrical than the left part 8 has a different radius of curvature than the right part 9 owns.
  • the arched curve can also be symmetrical be, the radius of curvature is the same everywhere.
  • the blade edge In the exemplary embodiments of the blade edge according to FIGS. 5 and 6 it consists of a straight, oblique line 10 or 11. At 6 has the support plate 1 larger diameter than the cover plate 2. In the embodiment 5 is the reverse.
  • the outer blade edge is made of Trapezoidal, i.e. it consists of the straight line 12 parallel to Axis of rotation and the slope 13.
  • the slope can also on the support plate 1 and the straight line 12 lie on the cover plate 2.

Landscapes

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

Claims (9)

  1. Soufflante radiale comprenant un carter avec un contour intérieur en forme de spirale et une roue de soufflante fermée, dont le diamètre est bien supérieur à sa largeur de sortie d'écoulement (c) et qui comprend un disque porteur (1), un disque de recouvrement (2) et des pales (3) incurvées vers l'arrière et intercalées, et les pales (3) sont conçues en se rétrécissant de l'intérieur vers l'extérieur et leur longueur sur le disque porteur (1) est supérieure à celle sur le disque de recouvrement (2),
    caractérisée en ce qu'au moins une partie du bord extérieur de pale forme un angle aigu avec une parallèle à l'axe de rotation.
  2. Soufflante radiale selon la revendication 1,
    caractérisée en ce que le bord extérieur de pale est conçu comme un triangle à angle obtus.
  3. Soufflante radiale selon la revendication 1,
    caractérisée en ce que le bord extérieur de pale est conçu comme un trapèze.
  4. Soufflante radiale selon la revendication 1,
    caractérisée en ce le bord extérieur de pale est conçu comme un arrondi (8, 9).
  5. Soufflante radiale selon la revendication 1,
    caractérisée en ce que le bord extérieur de pale est une ligne (10, 11) inclinée passant entre les extrémités du disque porteur (1) et du disque de recouvrement.
  6. Soufflante radiale selon les revendications 1 et 2,
    caractérisée en ce que la pointe à angle obtus du triangle est conçue comme une pointe (7) arrondie.
  7. Soufflante radiale selon les revendications 1 à 6,
    caractérisée en ce que le disque porteur (7) et le disque de recouvrement (2) présentent des diamètres différents.
  8. Soufflante radiale selon la revendication 4,
    caractérisée en ce que l'arrondi (8, 9) est conçu de façon symétrique.
  9. Soufflante radiale selon la revendication 4,
    caractérisée en ce que l'arrondi (8, 9) est conçu de façon asymétrique.
EP94107578A 1993-06-04 1994-05-17 Soufflante radiale Expired - Lifetime EP0627560B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4318580 1993-06-04
DE4318580A DE4318580A1 (de) 1993-06-04 1993-06-04 Radialgebläse

Publications (2)

Publication Number Publication Date
EP0627560A1 EP0627560A1 (fr) 1994-12-07
EP0627560B1 true EP0627560B1 (fr) 1998-07-01

Family

ID=6489633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107578A Expired - Lifetime EP0627560B1 (fr) 1993-06-04 1994-05-17 Soufflante radiale

Country Status (2)

Country Link
EP (1) EP0627560B1 (fr)
DE (2) DE4318580A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014393558B2 (en) * 2014-05-09 2017-09-07 Mitsubishi Electric Corporation Centrifugal blower and electric vacuum cleaner

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19918085A1 (de) * 1999-04-21 2000-10-26 Bsh Bosch Siemens Hausgeraete Gebläse mit einem Spiralgehäuse
ITAN20010008U1 (it) * 2001-03-01 2002-09-01 Giacalone Ignazio Convogliatore aria per elettrodomestici cappe da cucina alimentato damotore elettrico
DE10313054B4 (de) * 2003-03-24 2012-10-04 Motoren Ventilatoren Landshut Gmbh Radialgebläse
EP1940496B1 (fr) 2005-10-28 2016-02-03 ResMed Motor Technologies Inc. Ventilateur à un ou plusieurs étages et volute(s) imbriquée(s) et/ou hélice(s) destinée(s) à celui-ci
EP2090788A1 (fr) * 2008-02-14 2009-08-19 Napier Turbochargers Limited Rotor et turbocompresseur
DE102016113589A1 (de) * 2016-07-22 2018-01-25 Ebm-Papst Landshut Gmbh Gebläserad
DE102020131789A1 (de) * 2019-12-09 2021-06-10 Löwenstein Medical Technology S.A. Laufrad mit reduzierter Massenträgheit für ein Atemtherapiegerät

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1341882A (en) * 1915-09-07 1920-06-01 Buffalo Forge Co Centrifugal fan
DE800238C (de) * 1948-10-02 1950-10-17 Maschf Augsburg Nuernberg Ag Geblaeserad
DE3137554A1 (de) * 1981-09-22 1983-03-31 Wilhelm Gebhardt Gmbh, 7112 Waldenburg "radialventilator"
DE3924281A1 (de) * 1989-07-22 1991-01-31 Standard Elektrik Lorenz Ag Vorrichtung zum foerdern eines gasfoermigen mediums
DE8909594U1 (fr) * 1989-08-10 1989-10-05 Metronic Electronic Gmbh, 7210 Rottweil, De
DE9303711U1 (fr) * 1993-03-13 1993-05-13 Babcock-Bsh Ag Vormals Buettner-Schilde-Haas Ag, 4150 Krefeld, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014393558B2 (en) * 2014-05-09 2017-09-07 Mitsubishi Electric Corporation Centrifugal blower and electric vacuum cleaner

Also Published As

Publication number Publication date
DE4318580A1 (de) 1994-12-08
EP0627560A1 (fr) 1994-12-07
DE59406358D1 (de) 1998-08-06

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