EP1574716B1 - Ventilateur - Google Patents

Ventilateur Download PDF

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Publication number
EP1574716B1
EP1574716B1 EP05004577A EP05004577A EP1574716B1 EP 1574716 B1 EP1574716 B1 EP 1574716B1 EP 05004577 A EP05004577 A EP 05004577A EP 05004577 A EP05004577 A EP 05004577A EP 1574716 B1 EP1574716 B1 EP 1574716B1
Authority
EP
European Patent Office
Prior art keywords
projection
blade
hub
view
blower
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
EP05004577A
Other languages
German (de)
English (en)
Other versions
EP1574716A1 (fr
Inventor
Yoshikimi Tatsumu
Hirokazu Sakai
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1574716A1 publication Critical patent/EP1574716A1/fr
Application granted granted Critical
Publication of EP1574716B1 publication Critical patent/EP1574716B1/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
    • 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
    • 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 present invention relates to a centrifugal turbo type blower.
  • Centrifugal turbo type blowers are used for ceiling type or cassette type air conditioners and various ventilators.
  • FIGS. 20 to 23 Japanese Patent Application Laid-open No.2001-263294 ).
  • a rotation body 2 is rotated by a motor 1, and the rotation body 2 includes a hub 3, a plurality of blades 4 which are radially mounted on an outer periphery of the hub 3, and a shroud 5 disposed on an opposite side from the hub 3 for connecting the blades 4 to one another.
  • the shroud 5 is formed into such a shape that a portion between the adjacent blades 4 becomes an inclined surface 6 in a stepwise manner, the separation region of air from the negative pressure surface of the blade 4 is reduced, thereby reducing the noise.
  • EP 1 249 617 A2 discloses a blower having a plurality of blades, which are interleaved by flaps coupled either to the blades or to the impeller body, and which work as valves to permit air flow only in case of the rotational speed exceeding a threshold range.
  • the present invention has been achieved to solve the Conventional problem, and has the object to provide a blower capable of further reducing a separation region of air from a negative pressure surface of a blade. This object is solved by the features of claim 1. Preferred embodiments are addressed by the sub claims.
  • Embodiments of the present invention will be explained based on FIGS. 1 to 19 , and 24 .
  • FIGS. 1 to 4 show a blower according to the first embodiment of the present invention.
  • a rotation body 2 is rotated by a motor 1, and the rotation body 2 includes a hub 3, a plurality of blades 4 which are radially mounted on an outer periphery of the hub 3, and a shroud 5 disposed on an opposite side from the hub 3 for connecting the blades 4 to one another.
  • the arrow A shows a rotation direction.
  • Substantially one-wing shaped projections 8 are formed on an outer periphery of negative pressure surfaces of the blades 4.
  • FIG. 2 is a sectional view of the blade 4.
  • a phantom line 9 shows a shape of the conventional blade formed with no projection 8.
  • a maximum height portion of the projection 8 is disposed at outer side of a substantially central portion 10 of the projection 8.
  • FIGS. 3 and 4 show detailed shapes of the blade 4 and the projection 8 formed on the blade 4.
  • FIG. 4A is a front view of the blade 4 on the side of the negative pressure surface.
  • FIGS. 4B, 4C and 4D are sectional views of an upper portion, a central portion and a lower portion of the blade 4.
  • FIGS. 5 to 7 show a blower according to the second embodiment of the present invention.
  • FIG. 5 is a perspective view of the blower, and a portion of the shape of the projection 8 is different from that of the first embodiment. Other portions are the same.
  • FIG. 6 is an enlarged view of an essential portion of the blower.
  • FIG. 7A is a front view of the blade 4 on the side of the negative pressure surface.
  • FIGS. 7B, 7C and 7D are sectional views of an upper portion, a central portion and a lower portion of the blade 4, respectively.
  • FIGS. 8 to 10 shows a blower according to the third embodiment of the present invention.
  • FIG. 8 is a perspective view of the blower, and a portion of the shape of the projection 8 is different from that of the first embodiment. Other portions are the same.
  • FIG. 9 is an enlarged view of an essential portion of the blower.
  • FIG. 10A is a front view of the blade 4 on the side of the negative pressure surface.
  • FIGS. 10B, 10C and 10D are sectional views of an upper portion, a central portion and a lower portion of the blade 4, respectively.
  • FIGS. 11 to 13 show a blower according to the fourth embodiment of the present invention.
  • FIG. 11 is a perspective view of the blower, and a portion of the shape of the projection 8 is different from that of the first embodiment. Other portions are the same.
  • FIG. 12 is an enlarged view of an essential portion of the blower.
  • FIG. 13A is a front view of the blade 4 on the side of the negative pressure surface.
  • FIGS. 13B, 13C and 13D are sectional views of an upper portion, a central portion and a lower portion of the blade 4, respectively.
  • FIGS. 14 to 16 show a blower according to the fifth embodiment of the present invention.
  • FIG. 14 is a perspective view of the blower, and a portion of the shape of the projection 8 is different from that of the first embodiment. Other portions are the same.
  • FIG. 15 is an enlarged view of an essential portion of the blower.
  • FIG. 16A is a front view of the blade 4 on the side of the negative pressure surface.
  • FIGS. 16B, 16C and 16D are sectional views of an upper portion, a central portion and a lower portion of the blade 4, respectively.
  • FIGS. 17 to 19 show a blower according to the sixth embodiment of the present invention.
  • FIG. 17 is a perspective view of the blower, and a portion of the shape of the projection 8 is different from that of the first embodiment. Other portions are the same.
  • FIG. 18 is an enlarged view of an essential portion of the blower.
  • FIG. 19A is a front view of the blade 4 on the side of the negative pressure surface.
  • FIGS. 19B, 19C and 19D are sectional views of an upper portion, a central portion and a lower portion of the blade 4, respectively.
  • FIGS. 24 show another concrete example according to the fourth embodiment shown in FIGS. 11 to 13 .
  • a cross sectional shape of the blade taken along the line K1-K1 passing through the projection 8 which is formed from the shroud 5 to a midpoint is formed such that the wing thickness is gently increased from a front edge F1 of the blade 4 along a rear edge E1 as shown in FIG. 24B , the blade wing thickness becomes maximum at a point P1 and then, is reduced on the opposite side gently to a point P2.
  • the wing thickness on the side of the negative pressure surface is increased, and the wing thickness becomes maximum at the rear edge E1 from the point P2 in a point P3.
  • the cross sectional shape of the blade taken along the line K2-K2 passing through the projection 8 which is formed from the shroud 5 to the midpoint is formed as shown in FIG. 24C .
  • the blade 4 of the seventh embodiment is formed such that the wing thickness becomes constricted at the point 2 which is a boundary with respect to the projection 8 to the midpoint to the rear edge E1 from the front edge F1.
  • the projection 8 extends from the point P2 to the rear edge E1, and the position of the maximum wing thickness point (point P3) is located (outside of the blower) closer to the rear edge E1 than the substantially central portion of the projection 8.
  • the seventh embodiment is a different example from the fourth embodiment
  • the shape of the projection 8 of the blade 4 shown FIG. 4 in the first embodiment the shape of the projection 8 of the blade 4 shown in FIG. 7 in the second embodiment, and the shape of the projection 8 of the blade 4 shown in FIG. 10 in the third embodiment can also be employed.
  • the present invention can be applied to blowers of ceiling type or cassette type air conditioners and various ventilators.

Landscapes

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

Claims (7)

  1. Soufflante comprenant un moyeu (3), un flasque (5), et une pluralité d'aubes (4) disposées radialement entre le moyeu et le flasque (5),
    caractérisée en ce que
    chaque aube (4) possède une projection essentiellement en forme de demi-aile (8) formée sur une surface de pression négative d'une portion de périphérie extérieure de celle-ci, et possède deux maximum d'épaisseur de l'aile d'une aube (P1, P3), parmi lesquels un maximum d'épaisseur de l'aile d'une aube (P3) est situé au niveau du bord arrière de l'aube (4) de telle sorte que dans une vue en coupe transversale de la projection (8) son point de hauteur maximale (P3) soit situé au côté arrière d'une portion essentiellement centrale (19) de la projection (8);
    la projection (8) s'étendant du côté du flasque dans la direction du côté du moyeu.
  2. Soufflante selon la revendication 1
    caractérisée en ce que
    la projection (8) s'étend du côté du flasque vers le côté du moyeu.
  3. Soufflante selon la revendication 1,
    caractérisée en ce que
    la hauteur de la projection (8) est réduite à partir du côté du flasque vers le côté du moyeu.
  4. Soufflante selon la revendication 2,
    caractérisée en ce que
    la hauteur de la projection (8) reste la même du côté du flasque vers le côté du moyeu et sa largeur est réduite du côté du flasque vers le côté du moyeu,
    la largeur étant dans une direction partant d'un côté périphérique intérieur vers un côté périphérique extérieur du moyeu.
  5. Soufflante selon la revendication 1,
    caractérisée en ce que
    la projection (8) s'étend du côté du flasque à un point médian vers le côté du moyeu.
  6. Soufflante selon la revendication 5,
    caractérisée en ce que
    la hauteur de la projection (8) est réduite depuis le côté du flasque vers le côté du moyeu.
  7. Soufflante selon la revendication 6,
    caractérisée en ce que
    la largeur de la projection (8) est réduite depuis le côté du flasque vers le côté du moyeu et la largeur étant dans une direction partant d'un côté périphérique intérieur vers un côté périphérique extérieur du moyeu.
EP05004577A 2004-03-05 2005-03-02 Ventilateur Expired - Lifetime EP1574716B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004061493 2004-03-05
JP2004061493 2004-03-05

Publications (2)

Publication Number Publication Date
EP1574716A1 EP1574716A1 (fr) 2005-09-14
EP1574716B1 true EP1574716B1 (fr) 2008-08-13

Family

ID=34824511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004577A Expired - Lifetime EP1574716B1 (fr) 2004-03-05 2005-03-02 Ventilateur

Country Status (3)

Country Link
EP (1) EP1574716B1 (fr)
CN (1) CN100485193C (fr)
ES (1) ES2309608T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2218917A1 (fr) 2009-02-12 2010-08-18 ebm-papst Mulfingen GmbH & Co. KG Roue de ventilateur radiale ou diagonale
DE102010009566A1 (de) 2010-02-26 2011-09-01 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonal-Ventilatorrad
DE202009018770U1 (de) 2009-02-12 2013-03-07 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonal-Ventilatorrad
US9267510B2 (en) 2009-05-08 2016-02-23 Mitsubishi Electric Corporation Centrifugal fan and air conditioner

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4973249B2 (ja) * 2006-03-31 2012-07-11 ダイキン工業株式会社 多翼ファン
JP2009008014A (ja) 2007-06-28 2009-01-15 Mitsubishi Electric Corp 軸流ファン
US20120045323A1 (en) * 2010-08-17 2012-02-23 Nidec Servo Corporation Fan
KR101720491B1 (ko) * 2015-01-22 2017-03-28 엘지전자 주식회사 원심팬
JP2016160905A (ja) * 2015-03-05 2016-09-05 パナソニックＩｐマネジメント株式会社 遠心ファン
JP6802270B2 (ja) * 2015-10-07 2020-12-16 ミネベアミツミ株式会社 インペラ、及び、そのインペラを備えた軸流ファン
WO2020152748A1 (fr) * 2019-01-21 2020-07-30 三菱電機株式会社 Ventilateur de soufflante, unité intérieure, et climatiseur
CN114109896B (zh) * 2021-11-26 2022-08-02 北京航空航天大学 应用于流动控制的高性能非线性对称仿生离心叶轮

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB723706A (en) * 1951-10-29 1955-02-09 Bruno Eck Improvements in rotors for radial flow fans
DE20016414U1 (de) * 2000-09-21 2001-01-04 Industrial Technology Research Institute, Chutung, Hsinchu Einstückig durch Prägen geformte blattförmige dreidimensionale Flügelstrukturen aus Metall
US6619923B2 (en) * 2000-11-29 2003-09-16 Industrial Technology Research Institute Integrated 3-D blade structure
US6474936B1 (en) * 2001-04-13 2002-11-05 Hewlett-Packard Company Blower impeller apparatus with one way valves

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2218917A1 (fr) 2009-02-12 2010-08-18 ebm-papst Mulfingen GmbH & Co. KG Roue de ventilateur radiale ou diagonale
DE202009018770U1 (de) 2009-02-12 2013-03-07 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonal-Ventilatorrad
US9267510B2 (en) 2009-05-08 2016-02-23 Mitsubishi Electric Corporation Centrifugal fan and air conditioner
DE102010009566A1 (de) 2010-02-26 2011-09-01 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonal-Ventilatorrad
EP2363609A1 (fr) 2010-02-26 2011-09-07 ebm-papst Mulfingen GmbH & Co. KG Roue de ventilateur radiale ou diagonale
DE102010009566A9 (de) 2010-02-26 2012-03-01 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonal-Ventilatorrad
US8932019B2 (en) 2010-02-26 2015-01-13 Emb-Papst Mulfingen Gmbh & Co. Kg Radial or diagonal fan wheel
DE202010018509U1 (de) 2010-02-26 2017-03-15 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonal-Ventilatorrad

Also Published As

Publication number Publication date
ES2309608T3 (es) 2008-12-16
CN1664376A (zh) 2005-09-07
EP1574716A1 (fr) 2005-09-14
CN100485193C (zh) 2009-05-06

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