EP1926534B1 - Brandbekämpfungsgebläse mit einem luftstromgleichrichter - Google Patents

Brandbekämpfungsgebläse mit einem luftstromgleichrichter Download PDF

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Publication number
EP1926534B1
EP1926534B1 EP06794394.4A EP06794394A EP1926534B1 EP 1926534 B1 EP1926534 B1 EP 1926534B1 EP 06794394 A EP06794394 A EP 06794394A EP 1926534 B1 EP1926534 B1 EP 1926534B1
Authority
EP
European Patent Office
Prior art keywords
fan
propeller
air flow
axis
blades
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.)
Revoked
Application number
EP06794394.4A
Other languages
English (en)
French (fr)
Other versions
EP1926534A1 (de
Inventor
Jacques Jalencas
Thierry Delerue
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.)
Groupe Leader
Original Assignee
Groupe Leader
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
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Application filed by Groupe Leader filed Critical Groupe Leader
Publication of EP1926534A1 publication Critical patent/EP1926534A1/de
Application granted granted Critical
Publication of EP1926534B1 publication Critical patent/EP1926534B1/de
Revoked legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
    • A62C3/0207—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires by blowing air or gas currents with or without dispersion of fire extinguishing agents; Apparatus therefor, e.g. fans
    • 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
    • F04D29/40—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
    • F04D29/544—Blade shapes
    • 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
    • F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
    • 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 present invention relates to a fan for fire fighting including a device for guiding the air flow produced by the fan propeller.
  • the air flow guiding device is in the form of a generally cylindrical tubular envelope, mounted coaxial with the axis of rotation of the helix and has the function of increasing the efficiency of the fan to facilitate the work of firefighters during their intervention.
  • the cylindrical envelope is closed at its front end by a protective grid.
  • the procedure for the intervention of firefighters in a smoky building consists first of all in creating an access to the building, for example by breaking a door, and then in forming an evacuation hole towards the outside of the building, for example by breaking a window pane.
  • Firefighters can then place a fire-fighting fan outside the smoky building to create a flow of air through the door and evacuate dangerous hot smoke to the outside of the building. window.
  • the main purpose of this procedure is to avoid the flash-over phenomenon that occurs when the fumes at 800 ° C ignite suddenly.
  • the second interest of the procedure is to increase visibility in the building to facilitate and accelerate the intervention of firefighters. Therefore, the intervention procedure of firefighters can be conducted effectively only with the use of a performance and adapted ventilation system.
  • a conventional fan 1 with a propeller 2 is schematically illustrated in plan view.
  • the fan is disposed in front of a door 3 to a smoky building 4 so as to form a flow of air 8 passing through the access door 3 to evacuate the fumes.
  • the conventional fan 1 is here provided with a guiding device 5 of the air flow which is in the form of a cylindrical envelope surrounding the propeller 2 and projecting in front of the propeller 2 in the direction of movement of the flow of air to channel and guide the flow of air.
  • reference 6 designates the axis of rotation of the helix and reference 7 designates the fan motor, for example an electric, thermal or hydraulic motor.
  • the air flow 8 concentrates at the outlet of the fan in a frustoconical shaped space whose opening angle is indicated by the reference A.
  • the conventional fan 1 of the figure 1 seen from the side.
  • the fan 1 produces an air flow 8 of generally frustoconical shape having the opening angle A.
  • the distance between the propeller 2 and the access door 3 is about two meters in order to obtain an effective evacuation of fumes out of the building 4. This distance is relatively short and firefighters may be hampered by the small distance left between the fan 1 and the door 3 to access the ignited room 4.
  • the problem is aggravated when access to the door 3 is by a stoop.
  • the fan may have to be placed on the floor at the bottom of the stoop to keep sufficient access distance between the fan 2 and the access door 3.
  • the amount of air entering the smoky building 4 is then greatly reduced because the stoop then makes screen the lower part of the air flow produced by the fan.
  • the object of the invention is to provide a fan for fire fighting whose performance is increased.
  • the fan proposed according to the invention must allow to quickly evacuate the hot fumes while releasing a large space in front of the building ignited to facilitate and accelerate the intervention of firefighters.
  • the subject of the invention is a propeller fan for fire-fighting comprising a device for guiding the air flow produced by the fan propeller, which is in the form of a mounted tubular casing. coaxial with the axis of rotation of the helix and in which is disposed a system of vane deflectors for rectifying and concentrating the air flow produced by the fan propeller, characterized in that it comprises further downstream of the vane deflector system in the direction of the air flow a second system of concentric tube baffles disposed in the tubular casing coaxially with the axis of rotation of the helix.
  • the air flow produced by the propeller is channeled by the blade receiving strip and then slides on the straightening strip of the blades in the direction of the axis of rotation of the propeller.
  • the baffles are tubes juxtaposed between them and of circular section, or hexagonal forming a honeycomb structure, or of square section.
  • the tubes are arranged in the tubular casing coaxially with the axis of rotation of the fan impeller.
  • baffles According to the provisions of the baffles, a larger or smaller space is left free in the tubular casing between the baffles and the fan propeller.
  • blades may be provided for deflectors which have an arcuate section, which are well adapted for straightening and guiding a flow of air produced by a helix having curved blades, that is to say, also to arcuate section.
  • the orientation of the blades can be adjusted by an adjustment system, whether for V-section blades or blades with arcuate section, which allows to modify and / or optimize the airflow.
  • the fan according to the invention comprises a protection grid constituted by said second system of baffles.
  • the number of deflectors in the tubular casing is greater than the number of blades of the fan propeller.
  • the air flow guiding device can be removably mounted on the fan which allows the same guiding device to be used on different fans. Fixing the guide device on the fan may be a notching system for example.
  • the propeller 12 rotating about the axis 15 comprises a cylindrical central hub 16 at the periphery of which are regularly distributed a plurality of blades 17 extending radially with respect to the axis 15.
  • the guiding device 13 of the air flow comprises a tubular casing 18, here cylindrical, which is mounted coaxially with the axis 15 and a deflector system whose deflectors are arranged in the cylindrical casing 18 and are presented under the shape of a plurality of blades 20 mounted radially at the periphery of a central disk 19.
  • the baffles are fixed in the envelope.
  • the cylindrical envelope 18 can be removably mounted on the fan 11.
  • the diameter of the disc 19 is substantially equal to that of the hub 16 of the propeller.
  • the number of blades 20 is greater than the number of blades 17 of the propeller 12.
  • the propeller 12 comprises ten blades 17 and the guide device 13 comprises twenty blades 20.
  • each blade 20 has a V-shaped cross-section.
  • a branch of the V-shaped form constitutes a straightening band of the air flow 21 and is oriented along the axis of rotation 15.
  • the straightening strip 21 is parallel to the axis 15.
  • the other branch of the V-shaped is the air flow receiving strip 22 and is inclined relative to the straightening band 21.
  • the receiving band 22 is secant to the axis 15.
  • the receiving band 22 of each vane 20 is disposed between the straightening band 21 and the helix 12. It is understood that with such an arrangement according to the invention, the air flow created by the rotation of the propeller 12 is first received on the reception strip 22 of the vanes and then slides towards the rectifying band 21 of the vanes 20.
  • the V-shaped section of a vane 20 and a vane 17 of the helix extending in a plane forming a right angle with the plane in which the reception band extends are very schematically represented. 22 of the dawn 20.
  • the reception strip 22 of the blade 20 is inclined with respect to the axis of rotation 15 of the helix 22 by an angle ⁇ and the blade 17 is inclined with respect to the axis of rotation 15 of a angle ⁇ .
  • the width of the straightening band 21 may be constant or variable along the length of the blade 20 to straighten the airflow evenly.
  • the width of the reception band 22 may also be variable along the blade 20 and follow the profile of the blade 17 so that the space left free between the blade 17 and the blade 20 remains constant. For example, if the width of the blade 17 decreases away from the axis of rotation 15, then the width of the receiving belt 22 increases away from the axis of rotation 15 so as to keep the space left free constant.
  • the space between the blades 17 and the blades 20 is constant and is about 5 mm.
  • the width of the receiving strip 22 is substantially identical to the width of the straightening strip 21, a width of about 21 mm.
  • the average width of the blades 17 is 42 mm for a helical diameter of 400 mm.
  • the width of the straightening band 21 can be adapted to the width of the blade 17 and the flow rate and pressure required to make the air flow more or less concentrated.
  • the receiving band 22 may be adapted to the profile of the blade 17, for example if the blade 17 is bent to a certain radius of curvature, the receiving band 22 may be curved according to the same radius of curvature.
  • the space between the blades 17 and the blades 20 is larger than 5 mm.
  • the cylindrical casing 18 of the guiding device 13 it is necessary for the cylindrical casing 18 of the guiding device 13 to partially cover the blades of the propeller 12.
  • This covering in the axial direction must be at least 5 mm and may be as high as
  • the width of the receiving strip 22 of a blade can be constant along the blade 20 whatever the profile of the blade 17.
  • a fan such as 11 with a deflector according to the invention can be placed at a distance of 4 meters from an access door 3 instead of a distance of 2 meters with a conventional fan such as 1, which allows firefighters gain easier access to the burning building 4.
  • the fan 11 according to the invention is shown seen from the side and oriented vertically with a certain angle, for example about 10 °, so that the air flow 30 is centered vertically on the middle of the height of the door 3 and so that the airflow does not touch the ground.
  • the frustoconical shape of the air flow 30 does not occupy vertically the entire space of the access door, which means that there remains a margin to orient the fan 11 vertically to direct the airflow
  • the fan 11 In the case where access to the door 3 is through a stoop (or steps) 31 as shown in the figure 8 , the fan 11 according to the invention remains adapted since it can be arranged at a relatively large distance (about 4 m) from the door 3 so that the air flow passes above the stoop. On the figure 8 the fan 11 is inclined so that the axis of rotation 15 forms an angle of approximately 20 ° with the ground.
  • the curve 32 (in broken lines) represents the flow rate of the air flow (on the ordinate axis) of a conventional fan 1 and the curve 33 (solid line) the flow rate of the flow of fan air 11 according to the invention as a function of the distance between said fan and access to the building.
  • the flow rate of the air flow is expressed in cubic meter per hour and on the abscissa axis, the distance between the fan and the access to the building is expressed in meters. It can be seen from the graph that with fan 11 a slightly higher maximum flow rate is obtained and that in addition this maximum flow rate of 19100 cubic meters per hour is maintained over a greater distance in comparison with curve 32.
  • the figure 10 shows an alternative embodiment of a guiding device 40 according to the invention with a deflector system whose deflectors consist of a plurality of tubes 43 juxtaposed and coaxial with the axis 15 of the helix and arranged fixed in the cylindrical casing 41 around a disk 42.
  • the tubes 43 are here regularly distributed around the axis 15 in two concentric rows. We have shown on the figure 10 thirty tubes 43 with cylindrical section for a fan blade diameter of about 550 mm
  • the tubes 43 and the propeller 12 as well as the air flow illustrated by the arrow 14 are shown. It can be seen that the disc 42 is coaxial with the hub 16 of the propeller 12 and that the diameter of the disc 12
  • the casing 41 is substantially larger than the diameter of the helix 12.
  • the space between the blades 17 of the propeller 12 and the tubes 43 must be less than the length of the tubes 43 in the direction indicated by the arrow 14.
  • the length of the tubes 43 is at least 3 times greater than the space between the blades 17 and the tubes 43.
  • the tubes 43 are disposed at about 50 mm of the blades 17 and have a minimum length of 150mm. It is understood that the cylindrical casing 41 can still be removably mounted on the fan casing.
  • the tubes 43 may have a cross section of hexagonal shape and thus constitute a kind of honeycomb structure.
  • the tubes 43 may still have a cross section of square shape and in this case they constitute a kind of grid with square meshes.
  • the fan comprises a propeller with blades 17 'of profiled cross-section in the form of a circular arc and wherein the guide device comprises vanes 20' of profiled cross-section also in the shape of an arc of a circle.
  • the reference 15 ' designates the axis of rotation of the fan propeller.
  • the longitudinal end portion 22 'of the blade 20' which is closest to the blade 17 ' constitutes a reception band for the air flow while the longitudinal end portion 21' of the blade which is furthest from the blade 17 'is a straightening band of the air flow.
  • the circular arc shape of the blade helps to guide the flow of air continuously, without breakage, which can cause turbulence.
  • the radius of curvature of a blade such that 20 'is related to the radius of curvature of the blade 17'. In general, the more the blade 17 'is curved, the more the blade 20' must be curved.
  • Vanes of profiled cross-section in the form of a circular arc can of course be used with a fan having blades of rectilinear cross-section.
  • Adjusting the orientation of a complete blade or of the blade receiving strip as described above makes it possible to modify the air flow or to optimize this flow of air in the case where the blades fan have an adjustable orientation.
  • FIG 15 very schematically a pinion gear system arranged to transmit to the axes 50 of the vanes 20 a rotational movement exerted on an adjusting bolt 51 accessible from the front of the fan.
  • This geared gear system here comprises a toothed wheel 52 whose central axis is integral with the bolt 51 and which is geared on a range of pinion wheels 53 with rotation axis 50.
  • the device for guiding airflow with blades described with reference to the figure 3 further comprises a second baffle system 60 for airflow rectification.
  • the second baffle system 60 is disposed at one end downstream of the vane deflector system in the direction of the airflow indicated by the arrow 14.
  • the guide device is shown in axial section according to this third embodiment.
  • the guiding device comprises an envelope 61, a central disk 62 having substantially the same diameter as the hub 16 of the propeller, the deflectors in the form of blades 20 and the second system 60 whose deflectors are constituted by a plurality of tubes 63 of circular section.
  • the central disc 62 is mounted coaxially with the axis of rotation 15 of the propeller 11 and the blades 20 extend radially between the envelope 61 and the central disc 62.
  • the tubes 63 are disposed in the casing 61 coaxially with the axis of rotation 15 of the helix 12 and concentric about the axis 15. This concentric arrangement is shown on FIG. figure 17 .
  • the concentric tubes 63 are distributed over the entire length of the straightening strips 21 of the blades 20.
  • the tubes 63 are mounted at the end of the straightening strips 21 which is downstream in the direction of the air flow.
  • the tubes 63 may be welded to the straightening strips 21.
  • the height of the concentric tubes 63 is at least equal to half the width of the straightening band 21. Moreover, the spacing between the concentric tubes 63 meets the EN294 standard, in order to define a safety distance which prevents reaching the blades of the rotating propeller constituting dangerous areas.
  • Such a second airflow rectifier system 60 also fulfills the protective grille function.
  • the envelope 61 consists of a portion of cylindrical shape similar to the cylindrical envelope 18 and a portion of frustoconical shape.
  • the cylindrical portion axially covers the blades 20 and extends into the frustoconical portion covering the blades 17 of the propeller.
  • the frustoconical portion flares in the opposite direction of the arrow 14.
  • Such a casing 61 optimizes the suction of the air flow without causing a loss of load further increasing the performance of the device.
  • the guiding device combines the rectification of airflow with blades described with reference to the figure 3 with the straightening performed by the second system 60 to improve the straightening and the guiding of the air flow.
  • the fan according to this third embodiment thus has increased efficiency and always a good compromise size / performance.
  • Curve 65 (solid line) represents the flow rate of the fan air flow according to the invention (on the ordinate axis) as a function of the distance between said fan and the access to the building (on the axis of abscissa).
  • Curve 66 (in broken lines) represents the flow rate of the air flow of a conventional fan. The flow rate of the air flow is expressed in cubic meters per hour and the distance between the fan and the access to the building is expressed in meters.
  • the fan according to the invention and the conventional fan are equipped with the same propeller and have the same power.
  • the tubes 63 may be made of steel or molded plastic.
  • the vanes of the vane straightener may have a cross section V-shaped or arcuate as described above.
  • the reception strips 22 of the vane 20 having a profiled section may have an adjustable orientation as described with reference to FIG. figure 14 .
  • the concentric tubes 63 of the second deflector system 60 have a hexagonal or square section.
  • the second system 60 with concentric tubes can be replaced by the juxtaposed tube system described with reference to FIG. figure 10 .
  • the envelope 61 may be perforated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (9)

  1. Gebläse (11) mit einer Luftschraube (12) zur Brandbekämpfung, umfassend eine Führungsvorrichtung (13; 40; 60) für den Luftstrom, der von der Luftschraube des Gebläses erzeugt wird, die in Form eines röhrenförmigen Mantels vorhanden ist, die koaxial zur Rotationsachse (15) der Luftschraube montiert ist und in der ein System von Ableitern (20; 43; 63) mit Flügeln angeordnet ist, um den von der Luftschraube (12) des Gebläses (11) erzeugten Luftstrom auszurichten und zu konzentrieren, dadurch gekennzeichnet, dass es ferner stromabwärts zum System von Ableitern in Richtung des Luftstroms ein zweites System (60) von Ableitern mit konzentrischen Rohren (63) umfasst, die in dem röhrenförmigen Mantel koaxial zur Rotationsachse der Luftschraube angeordnet sind.
  2. Gebläse nach Anspruch 1, bei dem jeder Flügel (20) von einem Band zur Aufnahme des Luftstroms (22) und einem Band zum Ausrichten des Luftstroms (21) gebildet ist und bei dem sich das Band zum Ausrichten im Wesentlichen parallel zur Rotationsachse (15) der Luftschraube (12) erstreckt und sich das Band zur Aufnahme zwischen der Luftschraube und dem Band zum Ausrichten erstreckt, wobei es zum Band zum Ausrichten geneigt ist.
  3. Gebläse nach einem der Ansprüche 1 oder 2, bei dem jeder Flügel einen V-förmigen oder einen kreisbogenförmigen Querschnitt hat.
  4. Gebläse nach einem der Ansprüche 1 bis 3, umfassend ein System (51, 52, 53) zur Einstellung der Ausrichtung der Flügel.
  5. Gebläse nach Anspruch 1, bei dem die konzentrischen Rohre (63) einen kreisförmigen oder hexagonalen oder quadratischen Querschnitt haben.
  6. Gebläse nach Anspruch 5, bei dem die konzentrischen Rohre (63) in axialer Translation in der röhrenförmigen Mantel beweglich montiert sind.
  7. Gebläse nach einem der vorhergehenden Ansprüche, umfassend ein Schutzgitter, das von dem zweiten System von Ableitern gebildet ist.
  8. Gebläse nach einem der vorhergehenden Ansprüche, bei dem die Anzahl von Flügeln in dem röhrenförmigen Mantel größer als die Anzahl von Flügeln der Luftschraube des Gebläses ist.
  9. Gebläse nach einem der vorhergehenden Ansprüche, bei dem die Führungsvorrichtung (13; 40; 60) des Luftstroms auf dem Gebläse abnehmbar montiert ist.
EP06794394.4A 2005-09-09 2006-05-02 Brandbekämpfungsgebläse mit einem luftstromgleichrichter Revoked EP1926534B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0552732A FR2890569B1 (fr) 2005-09-09 2005-09-09 Ventilateur pour la lutte contre l'incendie incluant un redresseur du flux d'air
PCT/FR2006/050407 WO2007028910A1 (fr) 2005-09-09 2006-05-02 Ventilateur pour la lutte contre l'incendie incluant un redresseur du flux d'air

Publications (2)

Publication Number Publication Date
EP1926534A1 EP1926534A1 (de) 2008-06-04
EP1926534B1 true EP1926534B1 (de) 2013-07-17

Family

ID=36507052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794394.4A Revoked EP1926534B1 (de) 2005-09-09 2006-05-02 Brandbekämpfungsgebläse mit einem luftstromgleichrichter

Country Status (5)

Country Link
EP (1) EP1926534B1 (de)
DE (1) DE202006021186U1 (de)
FR (1) FR2890569B1 (de)
RU (1) RU2378028C1 (de)
WO (1) WO2007028910A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101357B1 (de) 2015-06-03 2019-10-02 Rosenbauer International AG Lüfteraggregat

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011013015A1 (de) 2011-03-03 2012-09-06 Jens Bader Druckbelüfter zur Brandbekämpfung
FR3033501A1 (fr) * 2015-03-12 2016-09-16 Groupe Leader Ventilateur a jet d'air ovalise pour la lutte contre l'incendie
DE102016007205A1 (de) 2016-06-08 2017-12-14 Ziehl-Abegg Se Ventilatoreinheit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE500471C2 (sv) * 1991-07-09 1994-07-04 Flaekt Ab Ledskeneanordning i en axialfläkt
US5205711A (en) * 1992-02-28 1993-04-27 Unifire Power Blower, Inc. Hand-portable fire fighting positive pressure blower
US6394766B1 (en) * 1999-11-01 2002-05-28 James G. Gill Fan with adjustable guide vanes
KR100937929B1 (ko) * 2003-07-01 2010-01-21 한라공조주식회사 축류팬 쉬라우드의 스테이터

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101357B1 (de) 2015-06-03 2019-10-02 Rosenbauer International AG Lüfteraggregat

Also Published As

Publication number Publication date
EP1926534A1 (de) 2008-06-04
DE202006021186U1 (de) 2013-07-01
RU2378028C1 (ru) 2010-01-10
FR2890569B1 (fr) 2007-11-16
WO2007028910A1 (fr) 2007-03-15
FR2890569A1 (fr) 2007-03-16
RU2008113837A (ru) 2009-10-20

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