EP0132780B1 - Ventilateur tangentiel avec une augmentation de vitesse de fluide, près des parois du raccord de pression - Google Patents

Ventilateur tangentiel avec une augmentation de vitesse de fluide, près des parois du raccord de pression Download PDF

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Publication number
EP0132780B1
EP0132780B1 EP84108482A EP84108482A EP0132780B1 EP 0132780 B1 EP0132780 B1 EP 0132780B1 EP 84108482 A EP84108482 A EP 84108482A EP 84108482 A EP84108482 A EP 84108482A EP 0132780 B1 EP0132780 B1 EP 0132780B1
Authority
EP
European Patent Office
Prior art keywords
lug
tangential blower
blower
fan
tangential
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
Application number
EP84108482A
Other languages
German (de)
English (en)
Other versions
EP0132780A1 (fr
Inventor
Reinhold Hopfensperger
Dieter Schmidt
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.)
Alcatel Lucent Deutschland AG
International Standard Electric Corp
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
International Standard Electric Corp
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, Standard Elektrik Lorenz AG, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0132780A1 publication Critical patent/EP0132780A1/fr
Application granted granted Critical
Publication of EP0132780B1 publication Critical patent/EP0132780B1/fr
Expired 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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • 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
    • 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
    • F05D2250/52—Outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/914—Device to control boundary layer

Definitions

  • the invention relates to a cross-flow fan designed as a small or very small fan, consisting of a fan roller with blade edges that run parallel to the axis of rotation, a spiral-shaped baffle plate that converts from the spiral shape into a flat, curved or stepped surface in the area of the pressure chamber, a one-part or multi-part vortex generator and the fan valve ends completely or partially enclosing side parts.
  • Cross-flow fans whose fan roller has a diameter of 40-60 mm, for example, are referred to as small or very small fans.
  • Such cross-flow fans are known as mass products and are used in large numbers, for example, in household appliances, fan heaters, air conditioners, convectors, copiers, projectors, plug-in units for electrical and electronic devices and the like. The wide range of applications also shows that such fans have proven themselves in practice.
  • the invention is therefore based on the object to improve the known cross-flow fan in such a way that a new measure, either alone or in conjunction with others, improves the flow of the marginal zone and at the same time either completely prevents the whistle of the cross-flow fan or at least strongly attenuates it without additional noise occurs in other operating areas of the fan.
  • the cross-flow fan has a housing consisting of the side parts 1, the guide plate 2 and the vortex former 3, in which the fan roller 4 is rotatably mounted and is driven in the direction of arrow 5 during operation.
  • side parts, baffle and vortex form an approximately rectangular air outlet opening from which the air in the direction of arrow 6 should be conveyed as evenly as possible.
  • the side parts are provided with the tabs 7 according to the invention.
  • the tabs 7 have been produced by punching them out on three sides from the side parts and, for example, by bending them inwards at right angles to the side to which they are still connected to the side part.
  • Such an embodiment of the invention has the additional advantage that the injector effect causes a slight increase in the amount of air that is passed through. This effect only occurs if the opening 8 is below the Tab is located.
  • FIG. 2 shows six different embodiments of the tab 7.
  • the tab according to FIG. 2a has a flat shape.
  • the tabs according to FIGS. 2b and 2c have a kinked shape, the kink either pointing upwards or downwards.
  • 2d and 2e show a curved shape of the tab, the curvature can also be directed either upwards or downwards.
  • 2f shows a further embodiment of the tab, which can be provided in all embodiments, namely the rounding 9 at the end of the tab 7 facing the fan roller.
  • the tab 7 illustrates the position and arrangement of the tab 7 in the side part 1.
  • the length of the tab is denoted by x and the distance of the tab base from the guide plate by y.
  • the tab 7 can either be arranged at a right angle to the side part 1 or - as illustrated in FIG. 3 by the dashed layers - deviate from it by up to ⁇ 45 degrees.
  • Characteristic curve 11 shows that in the cross-flow fan according to the invention, especially in free jet operation or small to medium throttling, the maximum sound pressure level is very much lower than the known cross-flow fan.

Landscapes

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

Claims (10)

1. Ventilateur tangentiel de petites dimensions ou ventilateur miniature, comprenant un rotor dont le bord des lames s'étend parallèlement à l'axe de rotation, une plaque de déflexion conformée en spirale passant, dans la zone de la chambre haute pression, de la spirale à un plan, une surface courbe ou étagée, un formateur de vortex en une ou plusieurs parties, ainsi que des pièces latérales renfermant totalement ou partiellement les extrémités du rotor, caractérisé en ce que les pièces latérales (1) près de la sortie d'air du ventilateur tangentiel, sont pourvues de pattes 7 dépassant dans la chambre haute pression.
2. Ventilateur tangentiel selon la revendication 1, caractérisé en ce que ladite patte (7) est poinçonnée dans lesdites pièces latérales et pliée en laissant une ouverture (8).
3. Ventilateur tangentiel selon les revendications 1 et 2, caractérisé en ce que ladite patte (7) est de forme plate, perpendiculairement à la direction de sortie d'air.
4. Ventilateur tangentiel selon la revendication 1 et l'une des revendications 2 et 3, caractérisé en ce que ladite patte est de forme coudée, dans la direction de sortie d'air.
5. Ventilateur tangentiel selon la revendication 1 et l'une des revendications 2 et 3, caractérisé en ce que ladite patte (7) est de forme courbe, dans la direction de sortie d'air.
6. Ventilateur tangentiel selon la revendication 1 et l'une quelconque des revendications 2 à 5, caractérisé en ce que ladite patte (7), à son extrémité faisant face au rotor, est pourvue d'une portion arrondie (9).
7. Ventilateur tangentiel selon la revendication 1 et l'une quelconque des revendications 2 à 6, caractérisé en ce que ladite patte (7) est disposée à angle droit par rapport à ladite pièce latérale (1)
8. Ventilateur tangentiel selon la revendication 1 et l'une quelconque des revendications 2 à 6, caractérisé en ce que ladite patte (7) est disposée de manière à faire un angle supérieur à 45° par rapport à ladite pièce latérale (1).
9. Ventilateur tangentiel selon la revendication 1 et l'une quelconque des revendications 2 à 8, caractérisé en ce que la longueur (x) de ladite patte (7) est comprise entre 0,05 et 0,25 fois le diamètre du rotor (d).
10. Ventilateur tangentiel selon la revendication 1 et l'une quelconque des revendications 2 à 9, caractérisé en ce que l'espacement (y) de la base de ladite patte (7) depuis la plaque de déflexion est comprise entre 0,2 et 0,7 fois la hauteur de l'ouverture d'air (h).
EP84108482A 1983-07-23 1984-07-18 Ventilateur tangentiel avec une augmentation de vitesse de fluide, près des parois du raccord de pression Expired EP0132780B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3326650 1983-07-23
DE19833326650 DE3326650A1 (de) 1983-07-23 1983-07-23 Querstromluefter mit in den randzonen erhoehter luftaustrittsgeschwindigkeit

Publications (2)

Publication Number Publication Date
EP0132780A1 EP0132780A1 (fr) 1985-02-13
EP0132780B1 true EP0132780B1 (fr) 1986-11-05

Family

ID=6204784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108482A Expired EP0132780B1 (fr) 1983-07-23 1984-07-18 Ventilateur tangentiel avec une augmentation de vitesse de fluide, près des parois du raccord de pression

Country Status (4)

Country Link
US (1) US4662818A (fr)
EP (1) EP0132780B1 (fr)
AU (1) AU3079784A (fr)
DE (2) DE3326650A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5314300A (en) * 1992-01-13 1994-05-24 Fasco Industries, Inc. Noise control device for centrifugal blower
US5944481A (en) * 1997-11-10 1999-08-31 Carrier Corporation Transverse fan with flow stabilizer
DE59807195D1 (de) * 1998-11-06 2003-03-20 Alstom Switzerland Ltd Strömungskanal mit Querschnittssprung
US7604965B2 (en) * 2003-04-03 2009-10-20 Fluidigm Corporation Thermal reaction device and method for using the same

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1787655A (en) * 1929-05-18 1931-01-06 American Blower Corp Apparatus and method of controlling fans
US2325221A (en) * 1936-12-28 1943-07-27 Walter H Bretzlaff Segregated pressure fan
US2333017A (en) * 1939-10-17 1943-10-26 Quadrex Corp Vacuum cleaner
US3002341A (en) * 1957-12-31 1961-10-03 Boeing Co Jet engine noise suppression nozzles
DE1503591A1 (de) * 1965-03-12 1970-04-09 Prometheus Elek Sche Geraete U Querstromgeblaese
US3832085A (en) * 1972-10-04 1974-08-27 Ford Motor Co Automotive fan shroud
US3770081A (en) * 1972-10-13 1973-11-06 Line Inc M Silencer for combustion engines
US3779341A (en) * 1972-10-16 1973-12-18 Modine Mfg Co Noise suppressive fan shroud
US4014625A (en) * 1973-08-20 1977-03-29 Teruo Yamamoto Transverse flow fan
DE2414610C3 (de) * 1974-03-26 1980-11-13 Standard Elektrik Lorenz Ag, 7000 Stuttgart Querstromlufter
DE2448362C2 (de) * 1974-10-10 1983-01-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Als Klein- oder Kleinstlüfter ausgebildeter Querstromlüfter mit in den endscheibennahen Randzonen erhöhter Luftaustrittsgeschwindigkeit
GB1551362A (en) * 1975-04-28 1979-08-30 Komatsu Mfg Co Ltd Radiator assembly
US4152094A (en) * 1975-10-31 1979-05-01 Hitachi, Ltd. Axial fan

Also Published As

Publication number Publication date
DE3326650A1 (de) 1985-01-31
US4662818A (en) 1987-05-05
EP0132780A1 (fr) 1985-02-13
AU3079784A (en) 1985-01-24
DE3461213D1 (en) 1986-12-11

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