EP1571346A2 - Pale d'une roue ventilateur - Google Patents

Pale d'une roue ventilateur Download PDF

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Publication number
EP1571346A2
EP1571346A2 EP05004501A EP05004501A EP1571346A2 EP 1571346 A2 EP1571346 A2 EP 1571346A2 EP 05004501 A EP05004501 A EP 05004501A EP 05004501 A EP05004501 A EP 05004501A EP 1571346 A2 EP1571346 A2 EP 1571346A2
Authority
EP
European Patent Office
Prior art keywords
blade
support member
item
slot
plate
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.)
Withdrawn
Application number
EP05004501A
Other languages
German (de)
English (en)
Other versions
EP1571346A3 (fr
Inventor
Helmut Dipl.-Ing. Bronowski
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.)
Howden Axial Fans GmbH
Original Assignee
Howden Ventilatoren GmbH
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 Howden Ventilatoren GmbH filed Critical Howden Ventilatoren GmbH
Publication of EP1571346A2 publication Critical patent/EP1571346A2/fr
Publication of EP1571346A3 publication Critical patent/EP1571346A3/fr
Withdrawn legal-status Critical Current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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction

Definitions

  • the invention relates to the field of axial fans or axial fans.
  • Such Fans are used, for example, in road tunnels.
  • Such a Axial fan usually consists of a rotor and a housing with a Nachleitapparat.
  • the rotor has a number of blades.
  • each Shovel consists of an airfoil and a blade foot.
  • the scoop has considerable forces to transmit once through the winningaille the impeller are determined, but mainly by the Centrifugal force of the rotating masses.
  • the scoop can be different Materials exist and are made in different ways. in the This case is about cast buckets.
  • the inventor has recognized that the blade at certain temperatures lengthens and thereby grinds with its free end to the housing inner wall, so that the above rules are no longer met.
  • DD 2003 062 discloses polyurethane foam rotor blades for air coolers of Chemical plants.
  • the blade is without centric core manufactured, and a zugtragendes element, especially expanded metal, with Three-dimensional guiding elements forms the blade root.
  • the features, which are known from this document are in the preamble of claim 1 summarized.
  • the invention is based on the object, a blade of the above described type for axial fans to be designed so that they are also at extreme temperature conditions over a longer period of time their still Retains dimensional stability, so that the official regulations are observed can.
  • the solution not only fulfills the task in a perfect way. she is also easy to realize, and the effort is limited.
  • the blade shown in Figure 1 is part of a not shown here Rotor of an axial fan.
  • the blade comprises an airfoil 1 as well a blade foot 2.
  • the blade is made of one inner support member and an outer part 3 constructed.
  • the supporting part in turn exists from a first item 4 and a second item 5.
  • these two items 4, 5 enclosed by the material of the outer part by casting.
  • the outer part 3 can be poured onto the support member. Of course, it is also possible to pour the support member into the outer part, depending on which of the two parts is made first.
  • the two items 4 and 5 are worked out of plates, for example by punching or by cutting in the laser process, or as castings produced.
  • the items 4 and 5 are made of a very tough and high-strength material.
  • the enveloping outer part 3 however, consists of aluminum or one comparable light alloy.
  • the strength of the outer part 3 is thus less than that of the supporting part.
  • the two items 4 and 5 are after their mutual assembly under a arranged at right angles to each other.
  • the connection between the two Parts 4 and 5 is a plug or weld connection.
  • the two plate-shaped items 4 and 5 by pouring to produce an integral form.
  • the two parts 4 and 5 are each with a slot Mistake.
  • slot 4.1 of the first item 4 and in FIG 7 slot 5.1 of item 5.
  • the first item 4 a fir-tree-like shape has. It has several bulges 4.2 and 4.3 and Holes, of course, are enveloped by the material of the airfoil 1 and provide an intimate connection between the support member and outer part. Also more Contours of the first item are conceivable, for example a Sawtooth contour, a sine contour, or simply a triangle contour with the (rounded) tip of the triangle in the upper region of the airfoil 1, in Figure 1 seen.
  • the two items 4 and 5 of the support member generally extend over the entire highly stressed part of the blade root 2.
  • the part 4 extends but not necessarily over the entire length of the airfoil 1.
  • a Extension up to half or up to two-thirds depends on the given Stress of the respective airfoil from.
  • the composite construction according to the invention achieves the following:
  • Said groove 2.1 of the blade root 2 is made of the two individual parts 4 and 5 of the support member formed. This is advantageous because the material of this Items, as mentioned, are of high strength, so they are the ones on this Reliably and reliably absorb occurring high loads can.
  • FIG 9 is an alternative embodiment of the two items 4, 5, which form the support part, shown.
  • the two items 4, 5 in its lower region, which forms the blade root 2, in axial section a barrel-shaped area, in particular for fastening the Items 4 and 5 are used in the casting base and removed after casting.
  • the item 5 in turn has a centrally located slot 5.1 in Axial direction, the at the lower or radially inner end accessible for the Item 4 ends. At this lower end, the slot is 5.1 by two Tabs 5.2 narrowed.
  • the item 4 has accordingly at its lower or radially inner End centered a recess 4.4, which is sized in size, that the two projections 5.2 of the item 5 in this recess 4.4 can intervene.
  • a single projection 5.2 execute or the recess 4.4 not consistently perform.
  • two recesses 4.4 arranged on opposite Side of the item 4 may be provided, or in the provision of only one single projection 5.2, a single recess 4.4 on only one side of the Part 4 be provided.
  • the embodiment shown with the Recess 4.4 and the projections 5.2 at the bottom of the items 4 and 5 has the advantage that only a comparatively small expansion of the slot 5.1 when plugging the two items 4 and 5 is required, as long as the projections 5.2 are not yet snapped into the recess 4.4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP05004501A 2004-03-03 2005-03-02 Pale d'une roue ventilateur Withdrawn EP1571346A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004010397 2004-03-03
DE200410010397 DE102004010397A1 (de) 2004-03-03 2004-03-03 Schaufel für das Laufrad eines Ventilators

Publications (2)

Publication Number Publication Date
EP1571346A2 true EP1571346A2 (fr) 2005-09-07
EP1571346A3 EP1571346A3 (fr) 2012-04-18

Family

ID=34745369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004501A Withdrawn EP1571346A3 (fr) 2004-03-03 2005-03-02 Pale d'une roue ventilateur

Country Status (2)

Country Link
EP (1) EP1571346A3 (fr)
DE (1) DE102004010397A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097225A1 (fr) * 2009-02-26 2010-09-02 W & S Management Gmbh & Co Kg Pale de ventilateur et moyens de fixation correspondants
CN116989641A (zh) * 2023-09-25 2023-11-03 国营川西机器厂 用于航空发动机离心通风器拆装的测量工具及测量方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2113019A1 (de) * 1970-03-19 1971-10-14 Fluor Prod Co Inc Geblaeseschaufel und Geblaeselaeuferbaugruppe
DE20306131U1 (de) * 2003-04-17 2003-06-26 Wisam Enterprises Co., Ltd., Taichung Zusammensetzbares Flügelrad für einen Ventilator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD200306A1 (de) * 1981-09-25 1983-04-13 Bernd Nagel Laufschaufel aus polyurethanschaum
DE4234292A1 (de) * 1992-10-12 1994-04-14 Behr Gmbh & Co Axiallüfter mit Kuststoffschaufeln

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2113019A1 (de) * 1970-03-19 1971-10-14 Fluor Prod Co Inc Geblaeseschaufel und Geblaeselaeuferbaugruppe
DE20306131U1 (de) * 2003-04-17 2003-06-26 Wisam Enterprises Co., Ltd., Taichung Zusammensetzbares Flügelrad für einen Ventilator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097225A1 (fr) * 2009-02-26 2010-09-02 W & S Management Gmbh & Co Kg Pale de ventilateur et moyens de fixation correspondants
CN102333960A (zh) * 2009-02-26 2012-01-25 W&S管理公司 通风机叶片及用于通风机叶片的紧固机构
AU2010219156B2 (en) * 2009-02-26 2015-01-22 W & S Management Gmbh & Co Kg Fan blade and fastening means therefor
CN105889120A (zh) * 2009-02-26 2016-08-24 W & S 管理公司 通风机叶片及用于通风机叶片的紧固机构
US9856888B2 (en) 2009-02-26 2018-01-02 W & S Management Gmbh & Co. Kg Fan blade and attaching means therefor
CN116989641A (zh) * 2023-09-25 2023-11-03 国营川西机器厂 用于航空发动机离心通风器拆装的测量工具及测量方法
CN116989641B (zh) * 2023-09-25 2023-12-15 国营川西机器厂 用于航空发动机离心通风器拆装的测量工具及测量方法

Also Published As

Publication number Publication date
DE102004010397A1 (de) 2005-09-22
EP1571346A3 (fr) 2012-04-18

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