EP1367262B1 - Ventilateur en particulier pour refroidisseurs d'air avec capot de ventilateur - Google Patents

Ventilateur en particulier pour refroidisseurs d'air avec capot de ventilateur Download PDF

Info

Publication number
EP1367262B1
EP1367262B1 EP03009743A EP03009743A EP1367262B1 EP 1367262 B1 EP1367262 B1 EP 1367262B1 EP 03009743 A EP03009743 A EP 03009743A EP 03009743 A EP03009743 A EP 03009743A EP 1367262 B1 EP1367262 B1 EP 1367262B1
Authority
EP
European Patent Office
Prior art keywords
fan
impeller
vane ring
annular guide
air
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
EP03009743A
Other languages
German (de)
English (en)
Other versions
EP1367262A3 (fr
EP1367262A2 (fr
Inventor
Franz Summerer
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.)
Hans Guentner GmbH
Original Assignee
Hans Guentner 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 Hans Guentner GmbH filed Critical Hans Guentner GmbH
Publication of EP1367262A2 publication Critical patent/EP1367262A2/fr
Publication of EP1367262A3 publication Critical patent/EP1367262A3/fr
Application granted granted Critical
Publication of EP1367262B1 publication Critical patent/EP1367262B1/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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Definitions

  • the invention relates to a fan as defined in the preamble of claim 1.
  • a fan of this type is known from DE-GM 94 22 006.
  • this construction it is already possible to release the safety grid prescribed for safety reasons from the flow orientation function, since this task has so far been fulfilled poorly due to the mesh or honeycomb-like construction of the protective grid.
  • This object is achieved by a guide vane ring serving primarily for flow orientation, which additionally fulfills the function of protection against contact since it lies behind the impeller of the fan in the flow direction of the air so that its rotor can not be accidentally touched.
  • US 2002/057 968 shows a fan with a protective grid, which is releasably connected to the housing / frame of the fan.
  • Another protective grid device or contact protection is also known from DE-GM 88 16 827 and there has a web mesh structure with polygonal or circular individual openings, with which it is intended to direct the emerging from the protective air flow equal, in particular parallel to the axis of rotation of the fan align.
  • a mesh-like grid With such a mesh-like grid, however, no, at least no pronounced rectification of the air flow can be achieved, but behind the grid forms one more or less turbulent flow state, which not only leads to a considerable switching pressure, but also is very swirling, which is why the efficiency of the fan leaves something to be desired and the throw of emerging from the grid flow is relatively small.
  • the air cooler known from EP 477 612 A2 is likewise equipped with a so-called air guiding grille, by which, however, as in the above-mentioned constructions, no parallelization of the air flow emerging from the grille in the sense of a swirl-free and therefore low-loss flow is achieved
  • Grid is also provided with pivotable grating parts, which should cause a deflection of their associated outlet flow side portion to the residual flow to achieve a targeted total flow through which despite the deflection of the grille part a backflow around the housing to the air inlet side to be prevented.
  • the object of the invention is to form the contact protection so that it is effectively independent of the vane ring, which means that it can be removed from the latter at any time, but can also be attached to a belonging to a fan vane ring yet without that for attachment of the contact protection a considerable effort must be driven.
  • the detachable connection between the protective grid and the vane ring can be advantageously carried out by means of snap or Klips instituten, which are part of the usually made of plastic vane ring and embrace the contact protection at its outer edge; but it can also be done in the simplest way with the help of cable ties.
  • the impeller 2 of the fan not shown in detail in Fig. 1 schematically indicated air cooler 15 is seated with its hub 1 on the axis of rotation 5 of the impeller driving electric motor 6.
  • a Strömungsleitapparat is arranged, consisting of a stationary vane ring 3, the from the impeller 2 has a small distance and is axially aligned with the impeller and its blades 13, 14, as shown in FIG. 3, are curved so that they bundle the emerging from the impeller 2 air jets S.
  • a shock protection 4 which is arranged on the air outlet side 7 of the vane ring and consists of a wire mesh fabric covering at least the blade channels 17, so that a passing through the blade channels by hand and thus a contact of the rotating impeller is impossible.
  • the measured beam angle ⁇ is thus negative everywhere in the fan impeller 2 without downstream vane ring 3 along the impeller radius, which means that the air jets emerging from the fan are not bundled, but diverge away from the impeller axis 5.
  • the vanes 13, 14 are adapted to the blades, ie, the vector of the exit velocity of the impeller 2 enters tangentially into the stator or the vane ring 3. Due to the curvature of the vector is deflected so that it almost parallel to the impeller axis 5 leaves the vane ring 3, as shown in FIG. 1 can be seen.
  • FIG. 1 underlying arrangement of impeller and vane ring under comparable experimental conditions as described above in connection with the experimental set-up without vane ring 3, has led to the following measurement results.
  • the angle ⁇ or ⁇ is again negative. This is indicated by the dashed line LS in Fig. 1.
  • the emission angles influence each other, which in the present case means that the air jet S already after a short distance, namely after about 1 m, almost parallel to the impeller axis of rotation 5, which in turn has a positive effect on the throw of the impeller.
  • the guide vanes 13, 14 of the vane ring 3 proceed from their front edge V, at which the incident beam S 1 enters the vane ring tangentially to the blade surface 19, 20, up to its trailing edge E at which the failure jet S 2 leaves the vane ring tangent to the blade surface, continuously curved surface.
  • This curvature corresponds to a circular arc with the radius R.
  • the curvature angle ⁇ of the vanes 13, 14 between blade leading edge V and blade trailing edge E is about 63 ° and is determined by the intersection point C of the two solders L 1 and L 2 on the incident beam S 1 at the Vane leading edge V and the jet S 2 at the vane trailing edge E.
  • the straight line G defined by the two points of intersection of the solders L 1 and L 2 with the incident beam S 1 or the exit beam S 2 at the blade leading edge V and the blade trailing edge E forms an angle ⁇ of 111 ° with the two blade edges.
  • FIG. 3 The illustrated in Fig. 3 particular Ausrandungsform the vane ring 3 is characterized not only by those mentioned in connection with FIG. 2 Outer ring pitch AR of 103 mm and inner ring pitch IR of 62.8 mm with a vane number of twenty-five, but also by the feature that the width T of the vane ring bounded by its air inlet side 8 and its air outlet side 7 is 55 mm, the width F of the foot 12 of the vanes 62.7 mm and the width S of the tip 11 of the vanes 46.7 mm.
  • the guide vane front 10 is straight and extends in the circumferential direction inclined to the Laufradffenachse 5, while the back 9 of the vanes 13, 14 while also also straight, but is aligned in the circumferential direction perpendicular to the axis of rotation 5.
  • Fig. 5 the releasable attachment of the protective grid 4 is shown on the vane ring 3 by means of the peripheral edge 21 of the molded plastic ring vane clips 22, 23 which surround the upper round wire 25 of the existing wire 24 protective grille 4 and as needed easily solved by the latter.
  • This hook-like attachment by clipping can, if required, for example, cost reasons, replace by cable ties, not shown, so that the guard can be solved at any time from the vane ring again, for example, if the vane ring, which is known to be fixed against the impeller, replaced or replaced should, because other throw lengths of the impeller leaving airflow are required or, for example, a repair of the vane ring is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Claims (5)

  1. Ventilateur, en particulier pour refroidisseurs à air (15), comprenant : un rotor (2),
    une couronne à aubes directrices (3) stationnaire, agencée du côté aval du rotor (2) à faible distance de celui-ci et en alignement axial avec celui-ci, dotée d'aubes incurvées (13, 14), et
    un grillage protecteur (4) agencé sur le côté entrée ou sur le côté sortie de la couronne à aubes directrices (3),
    caractérisé en ce que
    la couronne à aubes directrices (3) comporte une bordure périphérique (21), et
    le grillage protecteur (4) est fixé de façon détachable sur la bordure périphérique (21) de la couronne à aubes directrices (3).
  2. Ventilateur selon la revendication 1, caractérisé en ce que le grillage protecteur (4) est clipsé sur la couronne à aubes directrices (3).
  3. Ventilateur selon la revendication 2, caractérisé en ce que des clips (22, 23) sont conformés sur la bordure périphérique (21) de la couronne à aubes directrices (3).
  4. Ventilateur selon la revendication 3, caractérisé en ce que le grillage protecteur (4) est constitué par des fils (24), et les clips (22, 23) entourent le fil supérieur, de préférence le fil rond supérieur (25).
  5. Ventilateur selon la revendication 1, caractérisé en ce que le grillage protecteur (4) est fixé sur la couronne à aubes directrices (3) par des attaches de câble.
EP03009743A 2002-05-27 2003-05-05 Ventilateur en particulier pour refroidisseurs d'air avec capot de ventilateur Expired - Lifetime EP1367262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20208250U 2002-05-27
DE20208250U DE20208250U1 (de) 2002-05-27 2002-05-27 Berührungsschutz für Ventilatoren, insbesondere von Luftkühlern

Publications (3)

Publication Number Publication Date
EP1367262A2 EP1367262A2 (fr) 2003-12-03
EP1367262A3 EP1367262A3 (fr) 2004-10-13
EP1367262B1 true EP1367262B1 (fr) 2006-11-02

Family

ID=28799105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009743A Expired - Lifetime EP1367262B1 (fr) 2002-05-27 2003-05-05 Ventilateur en particulier pour refroidisseurs d'air avec capot de ventilateur

Country Status (4)

Country Link
EP (1) EP1367262B1 (fr)
AT (1) ATE344392T1 (fr)
DE (2) DE20208250U1 (fr)
DK (1) DK1367262T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3255281A1 (fr) 2016-06-08 2017-12-13 Ziehl-Abegg Se Ventilateur avec aubes de diffuseur tandem
US11255346B2 (en) 2017-06-01 2022-02-22 Ziehl-Abegg Se Fan and inlet guide grid for a fan

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502006002832D1 (de) * 2006-08-30 2009-03-26 Ralf Meier Strömungsgleichrichter für einen Ventilator
WO2011101440A1 (fr) * 2010-02-18 2011-08-25 Behr Gmbh & Co. Kg Dispositif de guidage d'air pour un ventilateur
CN110985445B (zh) * 2013-12-04 2021-03-30 松下知识产权经营株式会社 风机和装载有该风机的室外单元
CN112523794B (zh) * 2020-12-01 2023-11-28 淮南市百邦气动科技有限公司 一种风门电控装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345539A1 (de) * 1973-09-10 1975-03-20 Siemens Ag Schutzgitter fuer axialluefter
FR2492477A1 (fr) * 1980-10-17 1982-04-23 Unite Hermetique Dispositif de protection pour ventilateur axial et ventilateur axial comportant un tel dispositif
DE8816827U1 (fr) 1988-08-04 1990-10-18 Kueba Kuehlerfabrik Heinrich W. Schmitz Gmbh, 8021 Baierbrunn, De
DE9002321U1 (fr) 1989-03-02 1990-05-03 Sued-Electric Gmbh, 8011 Kirchseeon, De
DE4030452A1 (de) 1990-09-26 1992-04-02 Schmitz Kuehler Baierbrunn Luftkuehler
DE9422006U1 (de) 1994-02-10 1997-07-31 Guentner Gmbh Hans Schutzgittervorrichtung für Ventilatoren, insbesondere von Luftkühlern
TW486043U (en) * 2000-11-16 2002-05-01 Delta Electronics Inc Fast removable fan shield and mounting plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3255281A1 (fr) 2016-06-08 2017-12-13 Ziehl-Abegg Se Ventilateur avec aubes de diffuseur tandem
DE102016007205A1 (de) 2016-06-08 2017-12-14 Ziehl-Abegg Se Ventilatoreinheit
US11255346B2 (en) 2017-06-01 2022-02-22 Ziehl-Abegg Se Fan and inlet guide grid for a fan

Also Published As

Publication number Publication date
EP1367262A3 (fr) 2004-10-13
DK1367262T3 (da) 2007-03-05
EP1367262A2 (fr) 2003-12-03
DE20208250U1 (de) 2003-10-02
ATE344392T1 (de) 2006-11-15
DE50305542D1 (de) 2006-12-14

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