EP2417360B1 - Verstärkungselement zur verwendung mit einer ventilatornabe - Google Patents

Verstärkungselement zur verwendung mit einer ventilatornabe Download PDF

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Publication number
EP2417360B1
EP2417360B1 EP10713430.6A EP10713430A EP2417360B1 EP 2417360 B1 EP2417360 B1 EP 2417360B1 EP 10713430 A EP10713430 A EP 10713430A EP 2417360 B1 EP2417360 B1 EP 2417360B1
Authority
EP
European Patent Office
Prior art keywords
fan
hub
fan hub
reinforcement element
fastening portion
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
EP10713430.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2417360A1 (de
Inventor
Henrik Witt
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.)
W & S Management & Co KG GmbH
Original Assignee
W & S Management & Co KG 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 W & S Management & Co KG GmbH filed Critical W & S Management & Co KG GmbH
Priority to PL10713430T priority Critical patent/PL2417360T3/pl
Publication of EP2417360A1 publication Critical patent/EP2417360A1/de
Application granted granted Critical
Publication of EP2417360B1 publication Critical patent/EP2417360B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329Details of the hub
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/64Mounting; Assembling; Disassembling of axial pumps
    • F04D29/648Mounting; Assembling; Disassembling of axial pumps especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/10Metals, alloys or intermetallic compounds
    • F05D2300/17Alloys
    • F05D2300/171Steel alloys
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/70Treatment or modification of materials
    • F05D2300/702Reinforcement
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49229Prime mover or fluid pump making
    • Y10T29/49236Fluid pump or compressor making
    • Y10T29/49245Vane type or other rotary, e.g., fan

Definitions

  • the present invention relates to a fan hub, comprising means for connecting to a fan shaft and a substantially cylindrical mounting portion with radial seats for a number of fan blades, wherein the mounting portion has an inner circumferential surface.
  • the invention relates to a method for producing a fan with a fan hub according to one of claims 1 to 7.
  • Fans for subways or tunnels and / or closed vehicle buildings such as underground garages must be reliable for very long service lives under various load and environmental conditions work.
  • the installation of fans in subways or tunnels or underground car parks is designed for operation over several years or decades.
  • the metro or tunnel operator has requirements for the operability of the ventilator at high temperatures, such as occur especially in cases of fire. The requirements are partly prescribed by law.
  • fans consist of their basic construction of a fan hub to which a number of fan blades is mounted radially.
  • the Attachment of the fan blades is done by means of fasteners such as bolts.
  • fan hubs are known that consist of solid aluminum or an aluminum alloy.
  • a disadvantage of fan hubs made of aluminum is their limited applicability at temperatures above about 300 ° C. Because the tensile strength of aluminum decreases sharply at the temperatures mentioned, so that the aluminum begins to flow gradually. Even special aluminum alloys are not able to significantly improve this inadequacy. As a result of this detrimental nature of aluminum, fan blades may be released from a fan hub made of aluminum at high temperatures, such as may occur in fires.
  • fan hubs made of aluminum Due to this inadequacy of fan hubs made of aluminum, fan hubs made of solid steel are used in the prior art for smoke exhaust fans at high loads, ie at high speeds and / or with large blade lengths.
  • steel fan hubs have the disadvantage of having a very high mass.
  • the present invention is based on the object to provide a method for producing a fan with a fan hub according to one of claims 1 to 7.
  • the reinforcing element is configured substantially annular, the reinforcing element can absorb radial forces and completely keep away from the Axiallaufradnabe example made of aluminum. In the case of balanced fans, the reinforcing element exerts no force on the fan hub.
  • the hot tensile strength of the unit fan hub and reinforcing element is determined solely by the material of the reinforcing element.
  • a material optimized for the purpose of tensile fastening of the fan blades to the fan hub can be selected in this way.
  • a material optimized for the actual fan hub can be selected.
  • the reinforcing element can be advantageously selected from a material with high hot tensile strength and good creep behavior at high temperatures. According to the invention for the fan hub a particular lighter material without affecting the overall hot tensile strength of the fan.
  • the reinforcing element has at least two segments which can be welded together.
  • the production of a fan hub, which is provided with a reinforcing element according to the invention, is particularly simple due to this measure.
  • the number of segments corresponds to half the number of fan blades to be accommodated.
  • a fan with a total of four fan blades two segments may be provided.
  • three segments may be provided.
  • four segments can accordingly be provided.
  • the attachment of the reinforcing element to a fan hub is further improved if, in an embodiment of the invention, the reinforcing element has at least one substantially planar section, the surface normal of which can be oriented in the radial direction of a fan hub when used as intended.
  • the number of planar sections corresponds to twice the number of fan blades to be accommodated.
  • the number of planar sections corresponds to twice the number of fan blades to be accommodated.
  • in a four-wheel eight-plane sections exist. Due to the generally to be demanded symmetry of the rotating structures results in a cross-sectional area of the substantially annular reinforcing element corresponding to an n-corner.
  • a six-wheel would have twelve planar sections, a six-way eight-way wheel and a twelve-wheel impeller twenty-four planar sections.
  • the Reinforcement element is essentially made of steel.
  • the hot tensile strength and the creep behavior of steel are also excellent at temperatures above 300 ° C, for example. In particular, the hot tensile strength at the temperatures mentioned is much better than that of aluminum.
  • a fan hub according to claim 1 having means for connection to a fan shaft and / or a hub core and a substantially cylindrical mounting portion with radial receptacles for a number of fan blades, wherein the mounting portion has an inner circumferential surface, which with one of the fastening portion substantially separately configured, substantially annularly closed reinforcing element is provided with means for tensile fastening of the fan blades.
  • the substantially annular attachment portion can be made with advantage of a material with higher tensile strength than the fan hub, moreover.
  • the attachment portion may for example have the shape of a bent steel belt.
  • the means for tensile fastening of the fan blades can be holes with or without thread in the simplest case.
  • the fan hub according to the invention is further improved if the reinforcing element is arranged substantially along the inner circumferential surface of the fastening section.
  • the interior of the fan hub is usually free of superstructures. Therefore, according to the invention can be retrofitted with advantage according to the invention, a reinforcing element, such as in the form of a bent steel belt without constructive adjustments of the impeller hub are required.
  • the cylindrical mounting portion of the hub may need to receive additional radial forces to hold the reinforcing member in position.
  • the flat areas can be made for example by milling.
  • the fan hub is made essentially of aluminum.
  • aluminum is the preferred material for an axial impeller hub.
  • a fan hub made of aluminum despite the unfavorable properties of aluminum in terms of hot tensile strength in conjunction with a reinforcing element according to the invention have the required hot tensile strength. Because the reinforcing element is simultaneously made according to the invention of steel.
  • the fan hub according to the invention according to one of claims 2 to 7 designed.
  • the inventive method allows retrofitting of conventional, made of aluminum Axiallaufradnaben or other hubs for fans with a reinforcing element according to the invention. Because the ring shape of the steel element only by welding of individual segments of the Reinforcement element is carried out after attachment of the individual segments with the hub, eliminating a possibly problematic fitting a one-piece reinforcing element, in which, for example, a fan hub made of aluminum could be damaged by scratches. In addition, by the manufacturing method according to the invention with reinforcing element consisting of individual segments, an optimum fitting of the reinforcing element to the inner lateral surface of the fan hub can be achieved.
  • FIG. 1 shows a perspective view of a Axiallaufradnabe 1.
  • the Axiallaufradnabe 1 substantially corresponds to that of a hub according to the prior art. It has a central bore 2 for connecting, optionally via a hub core, not shown, with a fan shaft, not shown.
  • the Axiallaufradnabe 1 also has a cylindrical mounting portion 4.
  • the mounting portion 4 has an inner circumferential surface 5.
  • radial mounting holes 6 are at equal angular intervals to each other. In the schematic representation according to FIG. 1 not all mounting holes 6 are shown, which are actually needed for the power-free operation of a fan.
  • the receiving holes 6 are used to receive fan blades, not shown, by means of blade bolts, which are attached to the ends of the fan blades.
  • the attachment of fan blades by inserting the blade bolts in the radial mounting holes 6 in the cylindrical mounting section 4 of the Axiallaufradnabe 1 and then screwing the threaded shovel bolt takes place based on an attached to the inner surface 5 shell nut.
  • a conically tapered skirt portion 11 connects. If the Axiallaufradnabe 1 is made of aluminum, this arrangement, however, at temperatures such as can occur in tunnel fires, ie at 300 ° C to 400 ° C, insufficient tensile strength.
  • FIG. 2 illustrates how in the invention with an axial impeller hub 1, the problem of insufficient hot tensile strength of an axial impeller hub 1 made of aluminum is solved.
  • Part (a) of the FIG. 2 shows in a radial section corresponding to the cutting direction according to II - II FIG. 1 a reinforcing element in the form of a reinforcing belt 7.
  • the reinforcing belt 7 is at bend lines 8 each by the same angle ⁇ (see FIG. 3 ) bent. In perspective according to FIG. 2 (a) is to understand the bend out of the plane of the drawing. Between the bending lines 8, the reinforcing belt 7 extends in the form of a flat, unbent portion 9, respectively.
  • the non-bent portions 9 each have the same length and width according to this embodiment.
  • Each third planar section 9 is provided with a bore 10. According to another embodiment of the invention, which is based on FIG. 3 (a ') is described below, longer portions 9 are arranged adjacent to respective shorter portions 9'.
  • the reinforcing belt 7 consists of the segments 7a, 7b.
  • the segments 7a, 7b are interconnected along the welding nad 12.
  • the Sch healthynad 12 is also a bending line in the sense of bending lines. 8
  • FIG. 2 (b) shows in the same section perspective as part (a) of FIG. 2 a Axiallaufradnabe 1, which substantially like the in FIG. 1 Perspective Axiallaufradnabe 1 is constructed.
  • FIG. 2 (b) However, beyond the special design of the inner circumferential surface 5 can be seen.
  • planar surfaces 13 which are aligned with one another in the axial direction are arranged.
  • the planar surfaces 13 have approximately the same dimensions as the planar sections 9 of the reinforcing belt 7 in a direction perpendicular to the axial direction.
  • reinforcing belt 7 are shown in axial side view. It shows the FIG. 3 (a) a reinforcing belt 7 for use in a Axiallaufradnabe 1 for a four-wheel, so an impeller with a total of four fan blades.
  • the reinforcing belt 7 is composed of two segments 7a, 7b. The segments 7a, 7b are connected or connectable along the welding seams 12.
  • FIG. 3 (a ') shows an alternative embodiment of the reinforcing belt according to FIG. 3 (a) ,
  • FIG. 3 (A ') illustrated reinforcing belt for use in a Axialradlaufradnabe 1 for an impeller provided with a total of four fan blades.
  • the non-bent portions 9 in pairs have different lengths in the radial direction.
  • adjacent non-bent portions 9 and 9' have different lengths in the radial direction.
  • radially opposite sections 9, 9 'each have the same radial length. In this design, the longer sections 9 do not touch the fan hub.
  • FIG. 3 (b) an embodiment of the reinforcing belt 7 is shown for a six-wheel.
  • the reinforcing belt 7 according to FIG. 3 (b) consists of three segments, which are connected or connectable to the welds 12.
  • FIG. 3 (c) shows an embodiment of the reinforcing belt 7 for an eight-wheel, which consists of four segments 7a, 7b, 7c, 7d.
  • FIG. 3 (d) an embodiment of the reinforcing belt 7, which is for a twelve-wheel is suitable and also composed of four segments.
  • the structure of the execution according to FIGS. 3 (c) and (d) otherwise corresponds to the embodiments according to the figures (a) and (b).
  • the unit of the segment of the reinforcing belt 7 and the Axiallaufradnabe 1 is then bolted by a locknut in the usual way.
  • the individual segments 7a, 7b of the reinforcing belt 7 will be welded together along the welds 12 in the interior the Axial wheel hub 1 welded.
  • a Axiallaufradnabe 1 which on the one hand is light and on the other hand, at high temperatures, such as may occur in fires in subways or tunnels, has sufficient tensile strength.
  • the reinforcing belt made of steel, in particular a structural steel, such as S235JR, manufactures and the axial hub 1 made of aluminum or an aluminum alloy.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP10713430.6A 2009-04-11 2010-04-09 Verstärkungselement zur verwendung mit einer ventilatornabe Active EP2417360B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10713430T PL2417360T3 (pl) 2009-04-11 2010-04-09 Element wzmacniający do stosowania z piastą wentylatora

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009017307A DE102009017307A1 (de) 2009-04-11 2009-04-11 Verstärkungselement zur Verwendung mit einer Ventilatornabe
PCT/EP2010/002222 WO2010115637A1 (de) 2009-04-11 2010-04-09 Verstärkungselement zur verwendung mit einer ventilatornabe

Publications (2)

Publication Number Publication Date
EP2417360A1 EP2417360A1 (de) 2012-02-15
EP2417360B1 true EP2417360B1 (de) 2019-06-26

Family

ID=42733284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10713430.6A Active EP2417360B1 (de) 2009-04-11 2010-04-09 Verstärkungselement zur verwendung mit einer ventilatornabe

Country Status (11)

Country Link
US (1) US8876480B2 (ko)
EP (1) EP2417360B1 (ko)
KR (2) KR101812812B1 (ko)
CN (1) CN102362075B (ko)
AU (1) AU2010234251B9 (ko)
DE (1) DE102009017307A1 (ko)
DK (1) DK2417360T3 (ko)
ES (1) ES2745856T3 (ko)
PL (1) PL2417360T3 (ko)
PT (1) PT2417360T (ko)
WO (1) WO2010115637A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3021295B1 (fr) * 2014-05-21 2016-05-13 Snecma Moyeu raidi pour helice non carenee a pales a calage variable de turbomachine.
CN110469527A (zh) * 2019-09-02 2019-11-19 李�诚 一种直联混流风机

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Publication number Priority date Publication date Assignee Title
GB816921A (en) * 1955-07-11 1959-07-22 Air Control Installations Ltd Improvements in or relating to axial flow fans
US2541098A (en) * 1948-06-14 1951-02-13 Westinghouse Electric Corp Gas turbine propeller apparatus
GB826519A (en) * 1957-05-10 1960-01-13 Air Control Installations Ltd Improvements in or relating to axial flow fans
DE1428111B2 (de) * 1962-01-20 1971-06-16 Laufrad fuer einen axialluefter
DE1503628B2 (de) * 1965-10-22 1974-06-27 Turbon Ventilatoren- Und Apparatebau Gmbh, 1000 Berlin Flügelrad
BE757014A (ko) * 1969-10-04 1971-03-16 Schloz Motor Condensator
US3647317A (en) * 1970-03-19 1972-03-07 Fluor Prod Co Inc Fiberglass fan assembly
DE2313070C3 (de) * 1973-03-16 1982-09-16 Aktiengesellschaft Kühnle, Kopp & Kausch, 6710 Frankenthal Wälzlagerung für Schwenkbewegungen unter großer Axiallast
DE2704429C3 (de) * 1977-02-03 1979-10-11 Voith Getriebe Kg, 7920 Heidenheim Vorrichtung zum Verstellen der Laufradflügel von Ventilatoren
US4863352A (en) * 1984-11-02 1989-09-05 General Electric Company Blade carrying means
JPH02246897A (ja) * 1988-12-29 1990-10-02 General Electric Co <Ge> 航空機推進装置及び方法
US5112191A (en) * 1989-04-11 1992-05-12 General Electric Company Rotating cowling
DE3941612C2 (de) * 1989-12-16 1997-04-17 Behr Gmbh & Co Lüfterrad aus Kunststoff
DE4234292A1 (de) * 1992-10-12 1994-04-14 Behr Gmbh & Co Axiallüfter mit Kuststoffschaufeln
JP3713337B2 (ja) * 1996-08-09 2005-11-09 臼井国際産業株式会社 プラスチックファン
US6848887B2 (en) * 2001-08-23 2005-02-01 Lg Electronics Inc. Turbofan and mold thereof
FR2951435B1 (fr) * 2009-10-15 2012-02-03 Snecma Dispositif adapte pour etre pourvu de pales d'helice

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Also Published As

Publication number Publication date
CN102362075B (zh) 2015-02-04
KR20120013356A (ko) 2012-02-14
KR101941391B1 (ko) 2019-01-22
KR101812812B1 (ko) 2017-12-27
WO2010115637A8 (de) 2011-10-13
DK2417360T3 (da) 2019-10-07
US20120034099A1 (en) 2012-02-09
PL2417360T3 (pl) 2019-12-31
AU2010234251B9 (en) 2015-04-30
CN102362075A (zh) 2012-02-22
ES2745856T3 (es) 2020-03-03
PT2417360T (pt) 2019-08-30
AU2010234251A1 (en) 2011-11-10
DE102009017307A1 (de) 2010-10-14
KR20170092616A (ko) 2017-08-11
WO2010115637A1 (de) 2010-10-14
US8876480B2 (en) 2014-11-04
AU2010234251B2 (en) 2015-01-29
EP2417360A1 (de) 2012-02-15

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