EP3236171A1 - Smoke extractor box - Google Patents

Smoke extractor box Download PDF

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Publication number
EP3236171A1
EP3236171A1 EP17167082.1A EP17167082A EP3236171A1 EP 3236171 A1 EP3236171 A1 EP 3236171A1 EP 17167082 A EP17167082 A EP 17167082A EP 3236171 A1 EP3236171 A1 EP 3236171A1
Authority
EP
European Patent Office
Prior art keywords
box
zone
roof wall
discharge
suction
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.)
Granted
Application number
EP17167082.1A
Other languages
German (de)
French (fr)
Other versions
EP3236171B1 (en
Inventor
Marius Gamissans
Ivan Bordas
Daniel Michaud
Elodie SOUCHET
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.)
Soler and Palau Research SL
Original Assignee
Soler and Palau Research SL
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 Soler and Palau Research SL filed Critical Soler and Palau Research SL
Publication of EP3236171A1 publication Critical patent/EP3236171A1/en
Application granted granted Critical
Publication of EP3236171B1 publication Critical patent/EP3236171B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0236—Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F24F2007/002—Junction box, e.g. for ducts from kitchen, toilet or bathroom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein

Definitions

  • the invention relates to a fume extractor box and heat.
  • the invention finds its application in the safety of public places and collective dwellings, in which the regulation requires the use of fans capable of extracting fumes at high temperatures that may be present in an apartment of a collective dwelling or a room welcoming the public, for example in case of fire.
  • the third zone is called air suction via an air intake nozzle connection formed in a first side wall of the box.
  • the first zone, adjacent to the third zone, is said air discharge via an air discharge tapping connection formed in a second side wall of the box.
  • An axial air intake fan from the suction zone and radially air outlet to the air discharge nozzle connection is housed in this first zone, and its function is to ensure the extraction of air fumes and heat from the third suction zone to the first discharge zone.
  • the electric motor of the fan is housed in the second so-called technical zone.
  • This second zone is isolated from the other two so as to protect the electric motor from overheating.
  • the temperature of the first and third zones may be around 400 ° C while the temperature of the second zone must not exceed a value compatible with the operation of the electric motor, that is to say around 80 ° C .
  • the roof wall deforms and bombs because of thermal expansion, creating a space between the edges of the internal partitions and the roof wall. Thermal leakage then occurs between the first discharge zone and the second technical zone, causing a very significant increase in temperature in the second technical zone that may damage the electric motor.
  • the deformation of the roof wall also causes air leakage between the third suction zone and the first discharge zone, causing a decrease in the fan flow and a poorer extraction of fumes and heat.
  • the present invention aims to overcome the above disadvantages of the prior art.
  • the fume extractor and heat box according to the invention is characterized in that the roof wall of the box comprises a sealing piece integral with the inner face of the roof wall projecting from this face. and being in permanent contact with the partition separating the second technical zone from the first discharge zone even in case of heat expansion deformation of the roof wall, to protect the electric motor from overheating.
  • the extractor box comprises a second internal partition delimiting, in the space formed by the side walls of the box, a third air suction zone via the air suction nozzle connection formed in the first side wall of the box, this third suction zone being adjacent to the first discharge zone.
  • the roof wall comprises a second sealing piece secured to the inner face of the roof wall projecting from this face and being in permanent contact with the partition separating the suction and discharge zones. even in case of deformation by thermal expansion of the roof wall.
  • each sealing piece comprises at least one bracket whose branch is secured to the inner face of the roof wall and the other branch is in sliding contact with a side face of the corresponding partition, in the vicinity from the top edge of this partition.
  • the bracket is galvanized steel.
  • the temperature inside the first and third respectively discharge and suction zones is about 400 ° C.
  • the temperature inside the second technical zone is about 80 ° C. .
  • the fan is supported at one end by the partition separating the suction and discharge zones.
  • the two partitions are parallel to each other and arranged perpendicular to the side walls and to the roof wall of the box so that the axis of the fan wheel is parallel to at least one of the axes. suction and discharge tapping connections.
  • the partitions are arranged obliquely with respect to the side walls and to the roof wall of the box so that the axis of the fan wheel is oblique with respect to the axes of the suction and discharge connection points. .
  • the roof wall is removably attached to the side walls of the box by rapid mounting and dismounting means, comprising for example latches.
  • the roof wall comprises on its outer face a pair of handles to facilitate its handling.
  • the smoke and heat extraction box 1 comprises in known manner a fan 10 whose wheel 10a is driven by an electric motor 10b, the fan 10 and the electric motor 10b being housed in the box delimited by a wall 17, a roof wall 12 and four side walls 4, 5, 6, 7.
  • the fume extractor and heat box 1 is housed in a room, for example a technical room, or outside, for example on a roof terrace, and has the function of evacuating the air charged with fumes at a high temperature. temperature, for example in case of fire.
  • the latter comprises at least two internal partitions 2, 3 to divide the internal space of the extractor box into three zones distinct z1, z2, z3.
  • the first zone referred to as the discharge zone z1
  • the first zone allows the discharge of the air to be removed from the air to be loaded with high temperature fumes by the ventilator 10. This discharge is also made possible by the presence of a circular stitching connection. 9 formed in a second side wall 5 of the box 1 and which opens into the first discharge zone z1.
  • the stitching connection 9 is square or rectangular.
  • the third zone allows the suction of high-temperature fumes-laden air by means of the fan 10.
  • This suction is furthermore made possible by the presence of a circular tapping connection 8 formed in a first side wall 4 of the box 1 and which opens into the third suction zone z3.
  • the stitching connector 8 is square or rectangular. Given the high temperature of the fumes charging the air sucked and discharged by the fan 10, the temperature prevailing inside this first zone z1 is around 400 ° C in the context of the extraction of this type of fumes.
  • the second zone provides for the housing of the electric motor 10b for driving the wheel 10a of the fan 10, and any electrical boxes for controlling, controlling and / or regulating the electric motor 10b.
  • This second technical zone z2 is thermally insulated from the other two zones z1, z3 thanks to the roof wall 12 of the box 1 which bears on the upper edges of the two internal partitions 2, 3, so that the temperature inside this second zone z2 does not exceed 80 ° C.
  • This thermal insulation of the second technical zone z2 makes it possible to house a standard electric motor 10b.
  • this electric motor 10b is fixed on the internal partition 2 separating the discharge zone z2 from the technical zone z3.
  • the electric motor 10b is fixed, via a suitable support, to the bottom wall 17 of the box 1.
  • the fan 10 is supported at one of its ends by the internal partition 3 separating the zones of suction z3 and discharge z1.
  • the fan 10 comprises an axial inlet of air from the third suction zone z3, and a radial air outlet to the discharge zone z1.
  • FIGS 1A and 1B illustrate a first embodiment of the extractor box 1.
  • the two internal partitions 2, 3 are flat, parallel to each other and arranged perpendicular to the side walls 4, 5, 6, 7 and the bottom walls 17
  • each internal partition 2, 3 is secured by its edges on the one hand to the bottom wall 12 and on the other hand to the second lateral wall 5 in which the coupling is formed. stitching air discharge and a third side wall 6 of the box 1 vis-à-vis the second 5.
  • the first side wall 4 of the box 1, in which is formed the air intake nozzle connection 8 is vis-à-vis the partition 3 separating the suction zone z3 of the zone of delivery z1 and is parallel to this partition 3, so that the axis of the wheel 10a of the fan 10 is parallel to the axis of this connection of suction of air intake 8.
  • the axis of the stitch connection of air discharge 9 formed in the second side wall 5 of the box 1, and communicating with the discharge zone z1, is meanwhile perpendicular to the axis of the wheel 10a of the fan 10 to ensure optimal extraction of the fumes charging l air delivered by the fan 10 via the first discharge zone z1.
  • the axes of the two connection points respectively suction 8 and discharge 9 are perpendicular to each other.
  • the fume extractor and heat box 1 comprises a first sealing piece 15 and a second sealing piece 16 integral with the inner face 13 of the roof wall 12 of the box 1.
  • These first and second sealing parts 15, 16 protrude from the inner face 13 of the roof wall 12 of the box 1 and are in permanent contact and sliding respectively with the internal partition 2 separating the first discharge zone z1 from the second technical zone z2, and with the internal partition 3 separating the third suction zone z3 from the first discharge zone z1.
  • these sealing pieces 15, 16 extend transversely to the second side wall 5 of the box in which the air outlet stitching connection 9 is formed.
  • the second sealing member 16 prevents air leakage from the third suction zone z3 to the first discharge zone z1, avoiding a decrease in the flow rate of the fan 10 and makes the fumes less efficient. the heat.
  • the first sealing member 15 in turn prevents thermal leakage from the first discharge zone z1 to the second technical zone z2, protecting the electric motor 10b from overheating.
  • each sealing member 15, 16 comprises a galvanized steel bracket, one branch of which is for example riveted or welded to the inner face 13 of the roof wall 12 of the box 1, while the other branch is in position. sliding contact with a side face of the corresponding partition 2, 3, in the vicinity of the upper edge of this partition 2, 3, this upper edge being vis-à-vis the roof wall 12 of the box 1.
  • the Figures 2A and 2B illustrate a second embodiment of the casing 1.
  • the extractor casing 1 is designed for an in-line arrangement of the sewing respectively suction 8 and discharge 9 connections formed respectively in the first side wall 4 and the second side wall 5 of the casing 1.
  • the suction connection 8 and discharge connection 9 are preferably eccentric, and communicate respectively with the third suction zone z3 and the first discharge zone z1.
  • the fan 10 is in turn disposed in the box 1 obliquely, so that the angle formed between the axis of the wheel 10a of the fan 10 and the axis of the suction connection connection 8 or discharge 9 either obtuse, preferably of the order of 135 °. In this way, the pressure drops are relatively small.
  • the internal partition 3 separating the third suction zone z3 from the first discharge zone z1 comprises a first plate 3a and a second plate 3b integral with each one at one of their edges, while the internal partition 2 separating the second technical zone z2 of the first discharge zone z1 comprises a third plate 2a and a fourth plate 2b also integral with each other at one of their edges.
  • the first plate 3a extends obliquely in the box to a third side wall 6 of the extractor box 1, and the second plate 3b integral with the first plate 3a extends to a fourth side wall 7 of the box 1 perpendicularly to this one.
  • this second plate 3b can also extend obliquely in the extractor box 1.
  • the third plate 2a extends obliquely into the box up to the second side wall 5 comprising the discharge nozzle connection 9 of the extractor box 1, and the fourth plate 2b integral with the third plate 2a extends obliquely in the box 1 to the second plate 3b in the box 1.
  • the third and fourth plates 2a, 2b are perpendicular to each other.
  • this fourth plate 2b extends to the fourth side wall 7 of the extractor box 1.
  • the first and fourth plates 3a, 2b of the internal partitions 2, 3 are parallel to each other.
  • Such an arrangement of the internal partitions 2, 3 of the extractor box 1 in this second embodiment makes it possible to obtain a third suction zone z3 of a larger volume with respect to this same zone z3 of the box 1 according to the first embodiment shown in Figures 1A and 1B , the external dimensions of the extractor box 1 remaining identical.
  • the side walls 5, 7 of the box 1 forming the walls of the second technical zone z2 are perforated to allow air circulation with the outside.
  • the fume extractor and heat box 1 comprises a first sealing piece 15 and a second sealing piece 16 integral with the inner face 13 of the roof wall 12 of the box 1.
  • These first and second sealing parts 15, 16 project from the internal face 13 of the roof wall 12 of the box 1 and are in permanent contact respectively with the internal partition 2 separating the first discharge zone z1 from the second technical zone z2, and with the internal partition 3 separating the third suction zone z3 from the first discharge zone z1. Even in case of deformation of the roof wall 12 by thermal expansion, these sealing parts 15, 16 remain in contact with the corresponding internal partitions 2, 3 in the manner of figure 4 relating to the first embodiment.
  • each sealing member 15, 16 comprises two brackets 15a, 15b, 16a, 16b of galvanized steel, one branch of each bracket 15a, 15b, 16a, 16b is riveted or welded to the inner face 13 of the wall roof 12 of the box 1, while the other branch of each bracket 15a, 15b, 16a, 16b is in sliding contact with a lateral face of one of the plates 2a, 2b, 3a, 3b constituting the internal partitions 2, 3, in the vicinity of the upper edge of this plate 2a, 2b, 3a, 3b.
  • the two brackets 16a, 16b of the second sealing member 16 prevent air leakage from the third suction zone z3 to the first discharge zone z1, avoiding a decrease in the flow rate of the fan 10 and thereby making less good extraction of fumes and heat.
  • the two brackets 15a, 15b of the first sealing member 15 prevent thermal leakage from the first discharge zone z1 to the second technical zone z2, protecting the electric motor 10b from overheating.
  • the roof wall 12 of the box 1 according to the invention is removably attached to the side walls 4, 5, 6, 7 of the box 1 by means of rapid assembly and disassembly 18 , comprising for example latches.
  • these rapid assembly and disassembly means 18 provide four points of removable attachment of the roof wall 12 to the side walls 4, 5, 6, 7 of the box 1, in the vicinity of the vertices of the roof wall 12.
  • the latter comprises two handles 19 fixed on its outer face 14.
  • the figure 5 illustrates a third embodiment. This embodiment is close to the first, but has only one internal partition 2 separating a first discharge zone z1 from a second technical zone z2.
  • the fume extractor and heat box 1 comprises a first sealing piece 15 and a second sealing piece 16 as described above with respect to the first embodiment of the invention. invention, and integral with the inner face 13 of the roof wall 12 of the box 1.
  • These first and second sealing members 15, 16 project from the inner face 13 of the roof wall 12 of the box 1 and are in permanent contact respectively with the internal partition 2 separating the first discharge zone z1 of the second technical zone z2, and with the first side wall 4 of the extractor box 1.
  • these sealing pieces 15, 16 extend transversely to the second side wall 5 of the box in which is formed the air discharge nozzle connection 9 communicating with the discharge zone z1.
  • the second piece of sealing 16 prevents air leakage from the outside of the box 1 to the first discharge zone z1, avoiding a decrease in the flow rate of the fan 10 and makes a less good extraction of fumes and heat.
  • the first sealing member 15 in turn prevents thermal leakage from the first discharge zone z1 to the second technical zone z2, protecting the electric motor 10b from overheating.
  • each sealing member 15, 16 comprises a galvanized steel bracket, a branch of which is for example riveted or welded to the inner face 13 of the roof wall 12 of the 1, while the other branch is in sliding contact with a side face of the partition 2 or the corresponding side wall 4, in the vicinity of the upper edge of the partition 2 or side wall 4, this upper edge being in contact with with respect to the roof wall 12 of the box.
  • the sealing parts 15, 16 instead of galvanized steel brackets, heat-resistant and intumescent joints, that is to say that expand in the presence of heat, and which would ensure a permanent contact between the roof wall 12 and at least the internal partition 2 separating the first discharge zone z1 of the second technical zone z2, even in the case of deformation of the roof wall 12 by thermal expansion.
  • the stitching connection (9) of air delivery, communicating with the first discharge zone z1 can be formed in the roof wall (12) of the box.
  • the discharge of the fan (10) is carried out in this case vertically, the axes of the nozzle connections respectively suction (8) and discharge (9) being perpendicular to each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Casings For Electric Apparatus (AREA)
  • Ventilation (AREA)

Abstract

L'invention concerne un caisson extracteur de fumée et de chaleur. Le caisson extracteur de fumées et de chaleur selon l'invention comprend une paroi de toit (12) comprenant une pièce d'étanchéité (15) solidaire de la face interne (13) de la paroi de toit (12) en faisant saillie de cette face (13) et en étant en contact permanent avec la cloison (2) séparant la deuxième zone technique (z2) de la première zone de refoulement (z1) même en cas de déformation par dilatation thermique de la paroi de toit (12), pour protéger le moteur électrique (10b) d'une surchauffe. L'invention trouve son application dans la sécurisation des lieux publics et des habitations collectives.The invention relates to a smoke and heat extractor box. The fume and heat extractor box according to the invention comprises a roof wall (12) comprising a sealing piece (15) integral with the inner face (13) of the roof wall (12) projecting from this face (13) and being in permanent contact with the partition (2) separating the second technical zone (z2) from the first discharge zone (z1) even in the case of thermal expansion deformation of the roof wall (12), to protect the electric motor (10b) from overheating. The invention finds application in securing public places and collective dwellings.

Description

L'invention concerne un caisson extracteur de fumées et de chaleur. L'invention trouve son application dans la sécurité des lieux publics et des habitations collectives, dans lesquels la règlementation impose l'utilisation de ventilateurs capable d'extraire des fumées à haute température susceptibles d'être présentes dans un appartement d'une habitation collective ou une pièce accueillant du public, par exemple en cas d'incendies.The invention relates to a fume extractor box and heat. The invention finds its application in the safety of public places and collective dwellings, in which the regulation requires the use of fans capable of extracting fumes at high temperatures that may be present in an apartment of a collective dwelling or a room welcoming the public, for example in case of fire.

Il est connu de tels caissons extracteurs de fumées et de chaleur comportant trois zones délimitées par les parois latérales, la paroi de fond et la paroi de toit du caisson, ainsi que par des cloisons internes disposées dans le caisson extracteur de fumée. La troisième zone est dite d'aspiration d'air via un raccord de piquage d'aspiration d'air formé dans une première paroi latérale du caisson. La première zone, adjacente à la troisième, est dite de refoulement d'air via un raccord de piquage de refoulement d'air formé dans une deuxième paroi latérale du caisson. Un ventilateur à entrée axiale d'air provenant de la zone d'aspiration et à sortie radiale d'air vers le raccord de piquage de refoulement d'air est logé dans cette première zone, et sa fonction est d'assurer l'extraction des fumées et de la chaleur depuis la troisième zone d'aspiration vers la première zone de refoulement. Enfin, le moteur électrique du ventilateur est logé dans la deuxième zone dite technique. Cette deuxième zone est isolée des deux autres de manière à protéger le moteur électrique des surchauffes. En effet, la température des première et troisième zones peut avoisiner les 400°C alors que la température de la deuxième zone ne doit pas dépasser une valeur compatible avec le fonctionnement du moteur électrique, c'est-à-dire autour de 80°C.It is known such fume extraction and heat boxes having three zones defined by the side walls, the bottom wall and the roof wall of the box, and by internal partitions disposed in the smoke extractor box. The third zone is called air suction via an air intake nozzle connection formed in a first side wall of the box. The first zone, adjacent to the third zone, is said air discharge via an air discharge tapping connection formed in a second side wall of the box. An axial air intake fan from the suction zone and radially air outlet to the air discharge nozzle connection is housed in this first zone, and its function is to ensure the extraction of air fumes and heat from the third suction zone to the first discharge zone. Finally, the electric motor of the fan is housed in the second so-called technical zone. This second zone is isolated from the other two so as to protect the electric motor from overheating. Indeed, the temperature of the first and third zones may be around 400 ° C while the temperature of the second zone must not exceed a value compatible with the operation of the electric motor, that is to say around 80 ° C .

Cependant, devant les fortes températures régnant à l'intérieur des première et troisième zones respectivement d'aspiration et de refoulement, il est fréquent que la paroi de toit se déforme et se bombe à cause des dilatations thermiques, créant un espace entre les bords des cloisons internes et la paroi de toit. Il se produit alors des fuites thermiques entre la première zone de refoulement et la deuxième zone technique, engendrant une augmentation très importante de la température au sein de la deuxième zone technique risquant d'endommager le moteur électrique. En outre, la déformation de la paroi de toit provoque également des fuites d'air entre la troisième zone d'aspiration et la première zone de refoulement, engendrant une baisse du débit du ventilateur et une moins bonne extraction des fumées et de la chaleur.However, in the face of the high temperatures prevailing inside the first and third zones respectively suction and discharge, it is common that the roof wall deforms and bombs because of thermal expansion, creating a space between the edges of the internal partitions and the roof wall. Thermal leakage then occurs between the first discharge zone and the second technical zone, causing a very significant increase in temperature in the second technical zone that may damage the electric motor. In addition, the deformation of the roof wall also causes air leakage between the third suction zone and the first discharge zone, causing a decrease in the fan flow and a poorer extraction of fumes and heat.

La présente invention a pour but de pallier les inconvénients ci-dessus de l'art antérieur.The present invention aims to overcome the above disadvantages of the prior art.

Pour atteindre ce but, le caisson extracteur de fumées et de chaleur selon l'invention est caractérisé en ce que la paroi de toit du caisson comprend une pièce d'étanchéité solidaire de la face interne de la paroi de toit en faisant saillie de cette face et en étant en contact permanent avec la cloison séparant la deuxième zone technique de la première zone de refoulement même en cas de déformation par dilatation thermique de la paroi de toit, pour protéger le moteur électrique d'une surchauffe.To achieve this goal, the fume extractor and heat box according to the invention is characterized in that the roof wall of the box comprises a sealing piece integral with the inner face of the roof wall projecting from this face. and being in permanent contact with the partition separating the second technical zone from the first discharge zone even in case of heat expansion deformation of the roof wall, to protect the electric motor from overheating.

Selon une autre particularité, le caisson extracteur comprend une deuxième cloison interne délimitant, dans l'espace formé par les parois latérales du caisson, une troisième zone d'aspiration d'air via le raccord de piquage d'aspiration d'air formé dans la première paroi latérale du caisson, cette troisième zone d'aspiration étant adjacente à la première zone de refoulement.According to another feature, the extractor box comprises a second internal partition delimiting, in the space formed by the side walls of the box, a third air suction zone via the air suction nozzle connection formed in the first side wall of the box, this third suction zone being adjacent to the first discharge zone.

Selon une autre particularité, la paroi de toit comprend une seconde pièce d'étanchéité solidaire de la face interne de la paroi de toit en faisant saillie de cette face et en étant en contact permanent avec la cloison séparant les zones d'aspiration et de refoulement même en cas de déformation par dilatation thermique de la paroi de toit.According to another feature, the roof wall comprises a second sealing piece secured to the inner face of the roof wall projecting from this face and being in permanent contact with the partition separating the suction and discharge zones. even in case of deformation by thermal expansion of the roof wall.

Selon une autre particularité, chaque pièce d'étanchéité comprend au moins une équerre dont une branche est solidaire de la face interne de la paroi de toit et dont l'autre branche est en contact glissant avec une face latérale de la cloison correspondante, au voisinage du bord supérieur de cette cloison.According to another feature, each sealing piece comprises at least one bracket whose branch is secured to the inner face of the roof wall and the other branch is in sliding contact with a side face of the corresponding partition, in the vicinity from the top edge of this partition.

Selon une autre particularité, l'équerre est en acier galvanisé.According to another feature, the bracket is galvanized steel.

Selon une autre particularité, la température à l'intérieur des première et troisième zones respectivement de refoulement et d'aspiration est d'environ 400°C, et la température à l'intérieur de la deuxième zone technique est d'environ 80°C.According to another feature, the temperature inside the first and third respectively discharge and suction zones is about 400 ° C., and the temperature inside the second technical zone is about 80 ° C. .

Selon une autre particularité, le ventilateur est supporté au niveau d'une extrémité par la cloison séparant les zones d'aspiration et de refoulement.According to another feature, the fan is supported at one end by the partition separating the suction and discharge zones.

Selon une autre particularité, les deux cloisons sont parallèles entre-elles et disposées perpendiculairement par rapport aux parois latérales et à la paroi de toit du caisson de sorte que l'axe de la roue du ventilateur soit parallèle à au moins l'un des axes des raccords de piquage d'aspiration et de refoulement.According to another feature, the two partitions are parallel to each other and arranged perpendicular to the side walls and to the roof wall of the box so that the axis of the fan wheel is parallel to at least one of the axes. suction and discharge tapping connections.

Selon une autre particularité, les cloisons sont disposées obliquement par rapport aux parois latérales et à la paroi de toit du caisson de sorte que l'axe de la roue du ventilateur soit oblique par rapport aux axes des raccords de piquage d'aspiration et de refoulement.According to another feature, the partitions are arranged obliquely with respect to the side walls and to the roof wall of the box so that the axis of the fan wheel is oblique with respect to the axes of the suction and discharge connection points. .

Selon une autre particularité, la paroi de toit est amoviblement fixée aux parois latérales du caisson par des moyens à montage et démontage rapides, comprenant par exemple des grenouillères.According to another feature, the roof wall is removably attached to the side walls of the box by rapid mounting and dismounting means, comprising for example latches.

Selon une autre particularité, la paroi de toit comprend sur sa face extérieure une paire de poignées pour faciliter sa manutention.According to another feature, the roof wall comprises on its outer face a pair of handles to facilitate its handling.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant trois modes de réalisation de l'invention et dans lesquels :

  • La figure 1A représente une vue plongeante en perspective d'un caisson extracteur selon un premier mode de réalisation, avec sa paroi de toit en transparence non fixée aux parois latérales ;
  • La figure 1B représente le caisson de la figure 1A avec la paroi de toit fixée aux parois latérales du caisson ;
  • La figure 2A représente une vue plongeante en perspective d'un caisson extracteur selon un deuxième mode de réalisation, avec sa paroi de toit en transparence non fixée aux parois latérales ;
  • La figure 2B représente le caisson de la figure 1A avec la paroi de toit fixée aux parois latérales du caisson ;
  • La figure 3 représente une vue en coupe longitudinale du caisson de la figure 1A, la paroi de toit étant mise en place ;
  • La figure 4 représente une vue en coupe longitudinale du caisson de la figure 1A, la paroi de toit étant mise en place et déformée à cause de la dilatation thermique ;
  • La figure 5 représente une vue plongeante en perspective d'un caisson extracteur selon un troisième mode de réalisation, avec sa paroi de toit en transparence fixée aux parois latérales.
The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows with reference to the accompanying drawings given solely by way of example illustrating three embodiments. of the invention and in which:
  • The Figure 1A represents a perspective plunging view of an extractor box according to a first embodiment, with its transparent roof wall not attached to the side walls;
  • The Figure 1B represents the caisson of the Figure 1A with the roof wall attached to the side walls of the box;
  • The Figure 2A represents a perspective plunging view of an extractor box according to a second embodiment, with its transparent roof wall not attached to the side walls;
  • The Figure 2B represents the caisson of the Figure 1A with the roof wall attached to the side walls of the box;
  • The figure 3 represents a longitudinal sectional view of the box of the Figure 1A , the roof wall being put in place;
  • The figure 4 represents a longitudinal sectional view of the box of the Figure 1A , the roof wall being put in place and deformed because of the thermal expansion;
  • The figure 5 represents a perspective plunging view of an extractor box according to a third embodiment, with its transparent roof wall attached to the side walls.

En référence aux figures 1A, 1B, 2A, 2B, 3, 4 et 5, un caisson extracteur de fumées et de chaleur 1 va maintenant être décrit.With reference to Figures 1A, 1B , 2A, 2B , 3, 4 and 5 , a fume extractor and heat box 1 will now be described.

Le caisson extracteur de fumée et de chaleur 1, de forme parallélépipédique, comprend de façon connue un ventilateur 10 dont la roue 10a est entrainée par un moteur électrique 10b, le ventilateur 10 et le moteur électrique 10b étant logés dans le caisson délimité par une paroi de fond 17, une paroi de toit 12 et quatre parois latérales 4, 5, 6, 7.The smoke and heat extraction box 1, of parallelepipedal shape, comprises in known manner a fan 10 whose wheel 10a is driven by an electric motor 10b, the fan 10 and the electric motor 10b being housed in the box delimited by a wall 17, a roof wall 12 and four side walls 4, 5, 6, 7.

Le caisson extracteur de fumées et de chaleur 1 est logé dans une pièce, par exemple un local technique, ou bien à l'extérieur, par exemple sur un toit terrasse, et a pour fonction d'évacuer l'air chargé de fumées à haute température, par exemple en cas d'incendie.The fume extractor and heat box 1 is housed in a room, for example a technical room, or outside, for example on a roof terrace, and has the function of evacuating the air charged with fumes at a high temperature. temperature, for example in case of fire.

De manière à permettre l'extraction de fumées et de chaleur de la pièce à désenfumer par le ventilateur 10 du caisson extracteur 1, ce dernier comprend au moins deux cloisons internes 2, 3 permettant de diviser l'espace interne du caisson extracteur en trois zones distinctes z1, z2, z3.In order to allow the extraction of smoke and heat from the room to be removed by the fan 10 of the extractor box 1, the latter comprises at least two internal partitions 2, 3 to divide the internal space of the extractor box into three zones distinct z1, z2, z3.

La première zone, dite zone de refoulement z1, permet le refoulement hors de la pièce à désenfumer d'air chargé de fumées à haute température par le ventilateur 10. Ce refoulement est en outre rendu possible par la présence d'un raccord de piquage circulaire 9 formé dans une deuxième paroi latérale 5 du caisson 1 et qui débouche dans la première zone de refoulement z1. De manière alternative, le raccord de piquage 9 est carré ou rectangulaire.The first zone, referred to as the discharge zone z1, allows the discharge of the air to be removed from the air to be loaded with high temperature fumes by the ventilator 10. This discharge is also made possible by the presence of a circular stitching connection. 9 formed in a second side wall 5 of the box 1 and which opens into the first discharge zone z1. Alternatively, the stitching connection 9 is square or rectangular.

La troisième zone, dite zone d'aspiration z3, permet l'aspiration d'air chargé de fumées à haute température grâce au ventilateur 10. Cette aspiration est en outre rendue possible par la présence d'un raccord de piquage circulaire 8 formé dans une première paroi latérale 4 du caisson 1 et qui débouche dans la troisième zone d'aspiration z3. De manière alternative, le raccord de piquage 8 est carré ou rectangulaire. Compte tenu de la haute température des fumées chargeant l'air aspiré et refoulé par le ventilateur 10, la température régnant à l'intérieur de cette première zone z1 avoisine les 400°C dans le cadre de l'extraction de ce type de fumées.The third zone, called suction zone z3, allows the suction of high-temperature fumes-laden air by means of the fan 10. This suction is furthermore made possible by the presence of a circular tapping connection 8 formed in a first side wall 4 of the box 1 and which opens into the third suction zone z3. Alternatively, the stitching connector 8 is square or rectangular. Given the high temperature of the fumes charging the air sucked and discharged by the fan 10, the temperature prevailing inside this first zone z1 is around 400 ° C in the context of the extraction of this type of fumes.

La deuxième zone, dite zone technique z2, assure le logement du moteur électrique 10b d'entrainement de la roue 10a du ventilateur 10, et d'éventuels coffrets électriques de commande, de pilotage et/ou de régulation du moteur électrique 10b. Cette deuxième zone technique z2 est isolée thermiquement des deux autres zones z1, z3 grâce à la paroi de toit 12 du caisson 1 qui vient en appui sur les bords supérieurs des deux cloisons internes 2, 3, de sorte que la température régnant à l'intérieur de cette deuxième zone z2 ne dépasse pas 80°C. Cette isolation thermique de la deuxième zone technique z2 permet d'y loger un moteur électrique 10b standard. De préférence, ce moteur électrique 10b est fixé sur la cloison interne 2 séparant la zone de refoulement z2 de la zone technique z3. De manière alternative, le moteur électrique 10b est fixé, par l'intermédiaire d'un support adapté, à la paroi de fond 17 du caisson 1.The second zone, called technical zone z2, provides for the housing of the electric motor 10b for driving the wheel 10a of the fan 10, and any electrical boxes for controlling, controlling and / or regulating the electric motor 10b. This second technical zone z2 is thermally insulated from the other two zones z1, z3 thanks to the roof wall 12 of the box 1 which bears on the upper edges of the two internal partitions 2, 3, so that the temperature inside this second zone z2 does not exceed 80 ° C. This thermal insulation of the second technical zone z2 makes it possible to house a standard electric motor 10b. Preferably, this electric motor 10b is fixed on the internal partition 2 separating the discharge zone z2 from the technical zone z3. Alternatively, the electric motor 10b is fixed, via a suitable support, to the bottom wall 17 of the box 1.

Pour assurer l'aspiration et le refoulement d'air de la troisième zone d'aspiration z3 vers la première zone de refoulement z1, le ventilateur 10 est supporté au niveau d'une de ses extrémités par la cloison interne 3 séparant les zones d'aspiration z3 et de refoulement z1. En outre, le ventilateur 10 comprend une entrée axiale d'air provenant de la troisième zone d'aspiration z3, et une sortie radiale d'air vers la zone de refoulement z1.To ensure the suction and discharge of air from the third suction zone z3 to the first discharge zone z1, the fan 10 is supported at one of its ends by the internal partition 3 separating the zones of suction z3 and discharge z1. In addition, the fan 10 comprises an axial inlet of air from the third suction zone z3, and a radial air outlet to the discharge zone z1.

Les figures 1A et 1B illustrent un premier mode de réalisation du caisson extracteur 1. Dans ce mode de réalisation, les deux cloisons internes 2, 3 sont planes, parallèles entre-elles et disposées perpendiculairement aux parois latérales 4, 5, 6, 7 et aux parois de fond 17 et de toit 12 du caisson 1. En particulier, chaque cloison interne 2, 3 est solidaire par ses bords d'une part de la paroi de fond 12 et d'autre part de la deuxième paroi latérale 5 dans laquelle est formé le raccord de piquage de refoulement d'air ainsi que d'une troisième paroi latérale 6 du caisson 1 en vis-à-vis de la deuxième 5.The Figures 1A and 1B illustrate a first embodiment of the extractor box 1. In this embodiment, the two internal partitions 2, 3 are flat, parallel to each other and arranged perpendicular to the side walls 4, 5, 6, 7 and the bottom walls 17 In particular, each internal partition 2, 3 is secured by its edges on the one hand to the bottom wall 12 and on the other hand to the second lateral wall 5 in which the coupling is formed. stitching air discharge and a third side wall 6 of the box 1 vis-à-vis the second 5.

En outre, la première paroi latérale 4 du caisson 1, dans laquelle est formé le raccord de piquage d'aspiration d'air 8, est en vis-à-vis de la cloison 3 séparant la zone d'aspiration z3 de la zone de refoulement z1 et est parallèle à cette cloison 3, de sorte que l'axe de la roue 10a du ventilateur 10 soit parallèle à l'axe de ce raccord de piquage d'aspiration d'air 8. L'axe du raccord de piquage de refoulement d'air 9 formé dans la deuxième paroi latérale 5 du caisson 1, et communiquant avec la zone de refoulement z1, est quant à lui perpendiculaire à l'axe de la roue 10a du ventilateur 10 pour assurer une extraction optimale des fumées chargeant l'air refoulé par le ventilateur 10 via la première zone de refoulement z1. Les axes des deux raccords de piquage respectivement d'aspiration 8 et de refoulement 9 sont donc perpendiculaires entre eux.In addition, the first side wall 4 of the box 1, in which is formed the air intake nozzle connection 8, is vis-à-vis the partition 3 separating the suction zone z3 of the zone of delivery z1 and is parallel to this partition 3, so that the axis of the wheel 10a of the fan 10 is parallel to the axis of this connection of suction of air intake 8. The axis of the stitch connection of air discharge 9 formed in the second side wall 5 of the box 1, and communicating with the discharge zone z1, is meanwhile perpendicular to the axis of the wheel 10a of the fan 10 to ensure optimal extraction of the fumes charging l air delivered by the fan 10 via the first discharge zone z1. The axes of the two connection points respectively suction 8 and discharge 9 are perpendicular to each other.

Dans ce premier mode de réalisation, le caisson extracteur de fumées et de chaleur 1 selon l'invention comprend une première pièce d'étanchéité 15 et une seconde pièce d'étanchéité 16 solidaires de la face interne 13 de la paroi de toit 12 du caisson 1. Ces première et seconde pièces d'étanchéité 15, 16 font saillie de la face interne 13 de la paroi de toit 12 du caisson 1 et sont en contact permanent et glissant respectivement avec la cloison interne 2 séparant la première zone de refoulement z1 de la deuxième zone technique z2, et avec la cloison interne 3 séparant la troisième zone d'aspiration z3 de la première zone de refoulement z1. En outre, ces pièces d'étanchéité 15, 16 s'étendent transversalement à la deuxième paroi latérale 5 du caisson dans laquelle est formé le raccord de piquage de refoulement d'air 9.In this first embodiment, the fume extractor and heat box 1 according to the invention comprises a first sealing piece 15 and a second sealing piece 16 integral with the inner face 13 of the roof wall 12 of the box 1. These first and second sealing parts 15, 16 protrude from the inner face 13 of the roof wall 12 of the box 1 and are in permanent contact and sliding respectively with the internal partition 2 separating the first discharge zone z1 from the second technical zone z2, and with the internal partition 3 separating the third suction zone z3 from the first discharge zone z1. In addition, these sealing pieces 15, 16 extend transversely to the second side wall 5 of the box in which the air outlet stitching connection 9 is formed.

Comme on le comprend avec les figures 3 et 4, même en cas de déformation de la paroi de toit 12 par dilatation thermique, ces pièces d'étanchéité 15, 16 restent en contact avec les cloisons internes 2, 3 correspondantes. Ainsi, la deuxième pièce d'étanchéité 16 empêche les fuites d'air de la troisième zone d'aspiration z3 à la première zone de refoulement z1, évitant une baisse du débit du ventilateur 10 et de fait une moins bonne extraction des fumées et de la chaleur. La première pièce d'étanchéité 15 empêche quant à elle les fuites thermiques de la première zone de refoulement z1 vers la deuxième zone technique z2, protégeant le moteur électrique 10b d'une surchauffe.As is understood with the Figures 3 and 4 , even in case of deformation of the roof wall 12 by thermal expansion, these sealing parts 15, 16 remain in contact with the corresponding internal partitions 2, 3. Thus, the second sealing member 16 prevents air leakage from the third suction zone z3 to the first discharge zone z1, avoiding a decrease in the flow rate of the fan 10 and makes the fumes less efficient. the heat. The first sealing member 15 in turn prevents thermal leakage from the first discharge zone z1 to the second technical zone z2, protecting the electric motor 10b from overheating.

De préférence, chaque pièce d'étanchéité 15, 16 comprend une équerre en acier galvanisé, dont une branche est par exemple rivetée ou soudée sur la face interne 13 de la paroi de toit 12 du caisson 1, tandis que l'autre branche est en contact glissant avec une face latérale de la cloison correspondante 2, 3, au voisinage du bord supérieur de cette cloison 2, 3, ce bord supérieur étant en vis-à-vis de la paroi de toit 12 du caisson 1.Preferably, each sealing member 15, 16 comprises a galvanized steel bracket, one branch of which is for example riveted or welded to the inner face 13 of the roof wall 12 of the box 1, while the other branch is in position. sliding contact with a side face of the corresponding partition 2, 3, in the vicinity of the upper edge of this partition 2, 3, this upper edge being vis-à-vis the roof wall 12 of the box 1.

Les figures 2A et 2B illustrent un second mode de réalisation du caisson 1. Dans ce mode de réalisation, le caisson extracteur 1 est conçu pour un arrangement en ligne des raccords de piquage respectivement d'aspiration 8 et de refoulement 9 formés respectivement dans la première paroi latérale 4 et la deuxième paroi latérale 5 du caisson 1. Les raccords de piquage d'aspiration 8 et de refoulement 9 sont de préférence excentrés, et communiquent respectivement avec la troisième zone d'aspiration z3 et la première zone de refoulement z1. Le ventilateur 10 est quant à lui disposé dans le caisson 1 de manière oblique, de sorte que l'angle formé entre l'axe de la roue 10a du ventilateur 10 et l'axe du raccord de piquage d'aspiration 8 ou de refoulement 9 soit obtus, préférentiellement de l'ordre de 135°. De cette façon, les pertes de charge sont relativement peu importantes.The Figures 2A and 2B illustrate a second embodiment of the casing 1. In this embodiment, the extractor casing 1 is designed for an in-line arrangement of the sewing respectively suction 8 and discharge 9 connections formed respectively in the first side wall 4 and the second side wall 5 of the casing 1. The suction connection 8 and discharge connection 9 are preferably eccentric, and communicate respectively with the third suction zone z3 and the first discharge zone z1. The fan 10 is in turn disposed in the box 1 obliquely, so that the angle formed between the axis of the wheel 10a of the fan 10 and the axis of the suction connection connection 8 or discharge 9 either obtuse, preferably of the order of 135 °. In this way, the pressure drops are relatively small.

La cloison interne 3 séparant la troisième zone d'aspiration z3 de la première zone de refoulement z1 comprend une première plaque 3a et une deuxième plaque 3b solidaires entre elles chacune au niveau d'un de leurs bords, tandis que la cloison interne 2 séparant la deuxième zone technique z2 de la première zone de refoulement z1 comprend une troisième plaque 2a et une quatrième plaque 2b également solidaires entre elles chacune au niveau d'un de leurs bords.The internal partition 3 separating the third suction zone z3 from the first discharge zone z1 comprises a first plate 3a and a second plate 3b integral with each one at one of their edges, while the internal partition 2 separating the second technical zone z2 of the first discharge zone z1 comprises a third plate 2a and a fourth plate 2b also integral with each other at one of their edges.

La première plaque 3a s'étend obliquement dans le caisson jusqu'à une troisième paroi latérale 6 du caisson extracteur 1, et la deuxième plaque 3b solidaire de la première plaque 3a s'étend jusqu'à une quatrième paroi latérale 7 du caisson 1 perpendiculairement à celle-ci. De manière alternative, cette deuxième plaque 3b peut également s'étendre obliquement dans le caisson extracteur 1.The first plate 3a extends obliquely in the box to a third side wall 6 of the extractor box 1, and the second plate 3b integral with the first plate 3a extends to a fourth side wall 7 of the box 1 perpendicularly to this one. Alternatively, this second plate 3b can also extend obliquely in the extractor box 1.

La troisième plaque 2a s'étend obliquement dans le caisson jusqu'à la deuxième paroi latérale 5 comprenant le raccord de piquage de refoulement 9 du caisson extracteur 1, et la quatrième plaque 2b solidaire de la troisième plaque 2a s'étend obliquement dans le caisson1 jusqu'à la deuxième plaque 3b dans le caisson 1. Préférentiellement, les troisième et quatrième plaques 2a, 2b sont perpendiculaires entre elles. De manière alternative, cette quatrième plaque 2b s'étend jusqu'à la quatrième paroi latérale 7 du caisson extracteur 1.The third plate 2a extends obliquely into the box up to the second side wall 5 comprising the discharge nozzle connection 9 of the extractor box 1, and the fourth plate 2b integral with the third plate 2a extends obliquely in the box 1 to the second plate 3b in the box 1. Preferably, the third and fourth plates 2a, 2b are perpendicular to each other. Alternatively, this fourth plate 2b extends to the fourth side wall 7 of the extractor box 1.

Les première et quatrième plaques 3a, 2b des cloisons internes 2, 3 sont parallèles entre elles. Un tel agencement des cloisons internes 2, 3 du caisson extracteur 1 dans ce second mode de réalisation permet d'obtenir une troisième zone d'aspiration z3 d'un volume plus important par rapport à cette même zone z3 du caisson 1 selon le premier mode de réalisation représenté aux figures 1A et 1B, les dimensions externes du caisson extracteur 1 demeurant identiques.The first and fourth plates 3a, 2b of the internal partitions 2, 3 are parallel to each other. Such an arrangement of the internal partitions 2, 3 of the extractor box 1 in this second embodiment makes it possible to obtain a third suction zone z3 of a larger volume with respect to this same zone z3 of the box 1 according to the first embodiment shown in Figures 1A and 1B , the external dimensions of the extractor box 1 remaining identical.

Enfin, et de manière préférentielle, les parois latérales 5, 7 du caisson 1 formant les parois de la deuxième zone technique z2 sont ajourées pour permettre une circulation d'air avec l'extérieur.Finally, and preferably, the side walls 5, 7 of the box 1 forming the walls of the second technical zone z2 are perforated to allow air circulation with the outside.

Dans ce second mode de réalisation, le caisson extracteur de fumées et de chaleur 1 selon l'invention comprend une première pièce d'étanchéité 15 et une seconde pièce d'étanchéité 16 solidaires de la face interne 13 de la paroi de toit 12 du caisson 1. Ces première et seconde pièces d'étanchéité 15, 16 font saillie de la face interne 13 de la paroi de toit 12 du caisson 1 et sont en contact permanent respectivement avec la cloison interne 2 séparant la première zone de refoulement z1 de la deuxième zone technique z2, et avec la cloison interne 3 séparant la troisième zone d'aspiration z3 de la première zone de refoulement z1. Même en cas de déformation de la paroi de toit 12 par dilatation thermique, ces pièces d'étanchéité 15, 16 restent en contact avec les cloisons internes correspondantes 2, 3 à la manière de la figure 4 relative au premier mode de réalisation.In this second embodiment, the fume extractor and heat box 1 according to the invention comprises a first sealing piece 15 and a second sealing piece 16 integral with the inner face 13 of the roof wall 12 of the box 1. These first and second sealing parts 15, 16 project from the internal face 13 of the roof wall 12 of the box 1 and are in permanent contact respectively with the internal partition 2 separating the first discharge zone z1 from the second technical zone z2, and with the internal partition 3 separating the third suction zone z3 from the first discharge zone z1. Even in case of deformation of the roof wall 12 by thermal expansion, these sealing parts 15, 16 remain in contact with the corresponding internal partitions 2, 3 in the manner of figure 4 relating to the first embodiment.

De préférence, chaque pièce d'étanchéité 15, 16 comprend deux équerres 15a, 15b, 16a, 16b en acier galvanisé, dont une branche de chaque équerre 15a, 15b, 16a, 16b est rivetée ou soudée sur la face interne 13 de la paroi de toit 12 du caisson 1, tandis que l'autre branche de chaque équerre 15a, 15b, 16a, 16b est en contact glissant avec une face latérale de l'une des plaques 2a, 2b, 3a, 3b constituant les cloisons internes 2, 3, au voisinage du bord supérieur de cette plaque 2a, 2b, 3a, 3b. Ainsi, les deux équerres 16a, 16b de la deuxième pièce d'étanchéité 16 empêchent les fuites d'air de la troisième zone d'aspiration z3 à la première zone de refoulement z1, évitant une baisse du débit du ventilateur 10 et de fait une moins bonne extraction des fumées et de la chaleur. Les deux équerres 15a, 15b de la première pièce d'étanchéité 15 empêchent quant à elles les fuites thermiques de la première zone de refoulement z1 vers la deuxième zone technique z2, protégeant le moteur électrique 10b d'une surchauffe.Preferably, each sealing member 15, 16 comprises two brackets 15a, 15b, 16a, 16b of galvanized steel, one branch of each bracket 15a, 15b, 16a, 16b is riveted or welded to the inner face 13 of the wall roof 12 of the box 1, while the other branch of each bracket 15a, 15b, 16a, 16b is in sliding contact with a lateral face of one of the plates 2a, 2b, 3a, 3b constituting the internal partitions 2, 3, in the vicinity of the upper edge of this plate 2a, 2b, 3a, 3b. Thus, the two brackets 16a, 16b of the second sealing member 16 prevent air leakage from the third suction zone z3 to the first discharge zone z1, avoiding a decrease in the flow rate of the fan 10 and thereby making less good extraction of fumes and heat. The two brackets 15a, 15b of the first sealing member 15 prevent thermal leakage from the first discharge zone z1 to the second technical zone z2, protecting the electric motor 10b from overheating.

Dans les deux modes de réalisation du caisson décrits ci-dessus, la paroi de toit 12 du caisson 1 selon l'invention est amoviblement fixée aux parois latérales 4, 5, 6, 7 du caisson 1 par des moyens à montage et démontage rapides 18, comprenant par exemple des grenouillères. De manière préférentielle, ces moyens à montage et démontage rapides 18 assurent quatre points de fixation amovible de la paroi de toit 12 aux parois latérales 4, 5, 6, 7 du caisson 1, au voisinage des sommets de la paroi de toit 12. En outre, pour faciliter la manutention de la paroi de toit 12, cette dernière comprend deux poignées 19 fixées sur sa face extérieure 14.In the two embodiments of the box described above, the roof wall 12 of the box 1 according to the invention is removably attached to the side walls 4, 5, 6, 7 of the box 1 by means of rapid assembly and disassembly 18 , comprising for example latches. Preferably, these rapid assembly and disassembly means 18 provide four points of removable attachment of the roof wall 12 to the side walls 4, 5, 6, 7 of the box 1, in the vicinity of the vertices of the roof wall 12. Furthermore, to facilitate the handling of the roof wall 12, the latter comprises two handles 19 fixed on its outer face 14.

La figure 5 illustre un troisième mode de réalisation. Ce mode de réalisation est proche du premier, mais ne comporte qu'une seule cloison interne 2 séparant une première zone de refoulement z1 d'une deuxième zone technique z2.The figure 5 illustrates a third embodiment. This embodiment is close to the first, but has only one internal partition 2 separating a first discharge zone z1 from a second technical zone z2.

Dans ce troisième mode de réalisation, le caisson extracteur de fumées et de chaleur 1 selon l'invention comprend une première pièce d'étanchéité 15 et une seconde pièce d'étanchéité 16 telles que décrites ci-dessus relativement au premier mode de réalisation de l'invention, et solidaires de la face interne 13 de la paroi de toit 12 du caisson 1. Ces première et seconde pièces d'étanchéité 15, 16 font saillie de la face interne 13 de la paroi de toit 12 du caisson 1 et sont en contact permanent respectivement avec la cloison interne 2 séparant la première zone de refoulement z1 de la deuxième zone technique z2, et avec la première paroi latérale 4 du caisson extracteur 1. En outre, ces pièces d'étanchéité 15, 16 s'étendent transversalement à la deuxième paroi latérale 5 du caisson dans laquelle est formé le raccord de piquage de refoulement d'air 9 communiquant avec la zone de refoulement z1.In this third embodiment, the fume extractor and heat box 1 according to the invention comprises a first sealing piece 15 and a second sealing piece 16 as described above with respect to the first embodiment of the invention. invention, and integral with the inner face 13 of the roof wall 12 of the box 1. These first and second sealing members 15, 16 project from the inner face 13 of the roof wall 12 of the box 1 and are in permanent contact respectively with the internal partition 2 separating the first discharge zone z1 of the second technical zone z2, and with the first side wall 4 of the extractor box 1. In addition, these sealing pieces 15, 16 extend transversely to the second side wall 5 of the box in which is formed the air discharge nozzle connection 9 communicating with the discharge zone z1.

Même en cas de déformation de la paroi de toit 12 par dilatation thermique, ces pièces d'étanchéité 15, 16 restent en contact respectivement avec la cloison interne 2 et avec la première paroi latérale 4 du caisson 1. Ainsi, la deuxième pièce d'étanchéité 16 empêche les fuites d'air de l'extérieur du caisson 1 vers la première zone de refoulement z1, évitant une baisse du débit du ventilateur 10 et de fait une moins bonne extraction des fumées et de la chaleur. La première pièce d'étanchéité 15 empêche quant à elle les fuites thermiques de la première zone de refoulement z1 vers la deuxième zone technique z2, protégeant le moteur électrique 10b d'une surchauffe.Even in case of deformation of the roof wall 12 by thermal expansion, these sealing parts 15, 16 remain in contact respectively with the internal partition 2 and with the first side wall 4 of the box 1. Thus, the second piece of sealing 16 prevents air leakage from the outside of the box 1 to the first discharge zone z1, avoiding a decrease in the flow rate of the fan 10 and makes a less good extraction of fumes and heat. The first sealing member 15 in turn prevents thermal leakage from the first discharge zone z1 to the second technical zone z2, protecting the electric motor 10b from overheating.

De préférence et tel que décrit précédemment relativement au premier mode de réalisation, chaque pièce d'étanchéité 15, 16 comprend une équerre en acier galvanisé, dont une branche est par exemple rivetée ou soudée sur la face interne 13 de la paroi de toit 12 du caisson 1, tandis que l'autre branche est en contact glissant avec une face latérale de la cloison 2 ou de la paroi latérale 4 correspondante, au voisinage du bord supérieur de cette cloison 2 ou paroi latérale 4, ce bord supérieur étant en vis-à-vis de la paroi de toit 12 du caisson.Preferably and as described above with respect to the first embodiment, each sealing member 15, 16 comprises a galvanized steel bracket, a branch of which is for example riveted or welded to the inner face 13 of the roof wall 12 of the 1, while the other branch is in sliding contact with a side face of the partition 2 or the corresponding side wall 4, in the vicinity of the upper edge of the partition 2 or side wall 4, this upper edge being in contact with with respect to the roof wall 12 of the box.

La configuration telle que décrite n'est pas limitée aux modes de réalisation décrits précédemment et représentés sur les figures 1A, 1B, 2A, 2B, 3 et 4. Elle n'a été donnée qu'à titre d'exemple non limitatif. De multiples modifications peuvent être apportées sans pour autant sortir du cadre de l'invention. En particulier, on pourrait imaginer installer seulement la première pièce d'étanchéité 15, pour éviter les fuites thermiques de la première zone de refoulement z1 vers la deuxième zone technique z2. On pourrait également imaginer installer davantage de pièces d'étanchéité, en particulier des pièces d'étanchéité en contact permanent avec les parois latérales 5, 7 du caisson d'extraction 1, même en cas de déformation de la paroi de toit 12 par dilatation thermique, pour renforcer l'étanchéité des première et deuxième zones z1, z2, voire de la troisième zone z3. Enfin, on pourrait également imaginer pour les pièces d'étanchéité 15, 16, à la place des équerres en acier galvanisé, des joints résistants à la chaleur et intumescents, c'est-à-dire qui se dilatent en présence de chaleur, et qui assureraient un contact permanent entre la paroi de toit 12 et au moins la cloison interne 2 séparant la première zone de refoulement z1 de la deuxième zone technique z2, même en cas de déformation de la paroi de toit 12 par dilatation thermique. Enfin, le raccord de piquage (9) de refoulement d'air, communiquant avec la première zone de refoulement z1, peut être formé dans la paroi de toit (12) du caisson. Le refoulement du ventilateur (10) s'effectue dans ce cas verticalement, les axes des raccords de piquage respectivement d'aspiration (8) et de refoulement (9) étant perpendiculaires entre eux.The configuration as described is not limited to the embodiments described above and represented on the Figures 1A, 1B , 2A, 2B , 3 and 4 . It has been given only as a non-limiting example. Multiple modifications can be made without departing from the scope of the invention. In particular, one could imagine installing only the first sealing part 15, to prevent thermal leakage from the first discharge zone z1 to the second technical zone z2. One could also imagine installing more sealing parts, in particular sealing parts in permanent contact with the side walls 5, 7 of the extraction box 1, even in case of deformation of the roof wall 12 by thermal expansion , to reinforce the tightness of the first and second zones z1, z2 or even the third zone z3. Finally, one could also imagine for the sealing parts 15, 16, instead of galvanized steel brackets, heat-resistant and intumescent joints, that is to say that expand in the presence of heat, and which would ensure a permanent contact between the roof wall 12 and at least the internal partition 2 separating the first discharge zone z1 of the second technical zone z2, even in the case of deformation of the roof wall 12 by thermal expansion. Finally, the stitching connection (9) of air delivery, communicating with the first discharge zone z1, can be formed in the roof wall (12) of the box. The discharge of the fan (10) is carried out in this case vertically, the axes of the nozzle connections respectively suction (8) and discharge (9) being perpendicular to each other.

Claims (11)

Caisson extracteur de fumées et de chaleur (1), comprenant au moins une cloison interne (2) délimitant, dans l'espace formé par les parois latérales (4, 5, 6, 7) du caisson (1), deux zones (z1, z2) respectivement une première zone de refoulement d'air (z1) aspiré via un raccord de piquage d'aspiration d'air (8) formé dans une première paroi latérale (4) du caisson (1), l'air étant refoulé de cette zone (z1) à l'extérieur via un raccord de piquage de refoulement d'air (9) formé dans une deuxième paroi latérale (5) ou dans une paroi de toit (12) du caisson (1) et dans laquelle zone de refoulement (z1) est logé un ventilateur (10) à entrée axiale d'air aspiré et à sortie radiale d'air vers le raccord de piquage de refoulement d'air (9), et une deuxième zone technique (z2) dans laquelle est logé un moteur électrique (10b) d'entrainement du ventilateur (10), la deuxième zone technique (z2) étant isolée par la paroi de toit (12) fixée sur les parois latérales (4, 5, 6, 7) du caisson (1) et en appui sur la cloison interne (2), caractérisé en ce que la paroi de toit (12) comprend une pièce d'étanchéité (15) solidaire de la face interne (13) de la paroi de toit (12) en faisant saillie de cette face (13) et en étant en contact permanent et glissant avec la cloison (2) séparant la deuxième zone technique (z2) de la première zone de refoulement (z1) même en cas de déformation par dilatation thermique de la paroi de toit (12), pour protéger le moteur électrique (10b) d'une surchauffe.Smoke and heat extraction box (1), comprising at least one internal partition (2) delimiting, in the space formed by the side walls (4, 5, 6, 7) of the box (1), two zones (z1 , z2) respectively a first air discharge zone (z1) sucked via an air intake nozzle (8) formed in a first side wall (4) of the box (1), the air being discharged from this zone (z1) to the outside via an air discharge tapping connection (9) formed in a second side wall (5) or in a roof wall (12) of the box (1) and in which zone discharge nozzle (z1) is fitted with a fan (10) with axial intake of air sucked and with a radial outlet of air towards the air outlet nozzle (9), and a second technical zone (z2) in which an electric motor (10b) for driving the fan (10) is housed, the second technical zone (z2) being isolated by the roof wall (12) fixed on the side walls (4, 5, 6, 7) of the box (1) and resting on the internal partition (2), characterized in that the roof wall (12) comprises a sealing piece (15) integral with the inner face (13). of the roof wall (12) protruding from this face (13) and being in permanent and sliding contact with the wall (2) separating the second technical zone (z2) from the first discharge zone (z1) even in case of thermal expansion deformation of the roof wall (12), to protect the electric motor (10b) from overheating. Caisson extracteur (1) selon la revendication 1, caractérisé en ce qu'il comprend une deuxième cloison interne (3) délimitant, dans l'espace formé par les parois latérales (4, 5, 6, 7) du caisson (1), une troisième zone d'aspiration d'air (z3) via le raccord de piquage d'aspiration d'air (8) formé dans la première paroi latérale (4) du caisson (1), cette troisième zone d'aspiration (z3) étant adjacente à la première zone de refoulement (z1).Extraction box (1) according to claim 1, characterized in that it comprises a second internal partition (3) delimiting, in the space formed by the side walls (4, 5, 6, 7) of the box (1), a third air suction zone (z3) via the air intake nozzle (8) formed in the first side wall (4) of the box (1), this third suction zone (z3) being adjacent to the first discharge zone (z1). Caisson extracteur (1) selon la revendication 2, caractérisé en ce que la paroi de toit (12) comprend une seconde pièce d'étanchéité (16) solidaire de la face interne de la paroi de toit (12) en faisant saillie de cette face et en étant en contact permanent avec la cloison (3) séparant les zones d'aspiration (z3) et de refoulement (z1) même en cas de déformation par dilatation thermique de la paroi de toit (12).Extraction box (1) according to claim 2, characterized in that the roof wall (12) comprises a second sealing piece (16) integral with the inner face of the roof wall (12) projecting from this face. and being in permanent contact with the partition (3) separating the suction (z3) and discharge (z1) zones even in the case of thermal expansion deformation of the roof wall (12). Caisson extracteur (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque pièce d'étanchéité (15, 16) comprend au moins une équerre dont une branche est solidaire de la face interne de la paroi de toit (12) et dont l'autre branche est en contact glissant avec une face latérale de la cloison correspondante (2, 3), au voisinage du bord supérieur de cette cloison (2, 3).Extraction box (1) according to any one of claims 1 to 3, characterized in that each sealing piece (15, 16) comprises at least one bracket whose branch is secured to the inner face of the roof wall ( 12) and the other branch is in sliding contact with a side face of the corresponding partition (2, 3), in the vicinity of the upper edge of this partition (2, 3). Caisson extracteur (1) selon la revendication 4, caractérisé en ce que l'équerre (15, 15a, 15b, 16, 16a, 16b) est en acier galvanisé.Extraction box (1) according to claim 4, characterized in that the bracket (15, 15a, 15b, 16, 16a, 16b) is made of galvanized steel. Caisson extracteur (1) selon l'une quelconque des revendications 2 à 5, caractérisé en ce que la température à l'intérieur des première et troisième zones respectivement de refoulement (z1) et d'aspiration (z3) est d'environ 400°C, et la température à l'intérieur de la deuxième zone technique (z2) est d'environ 80°C.Extraction chamber (1) according to any one of claims 2 to 5, characterized in that the temperature inside the first and third zones respectively of discharge (z1) and suction (z3) is about 400 ° C, and the temperature within the second technical zone (z2) is about 80 ° C. Caisson extracteur (1) selon l'une quelconque des revendications 2 à 6, caractérisé en ce que le ventilateur (10) est supporté au niveau d'une extrémité par la cloison (3) séparant les zones d'aspiration (z3) et de refoulement (z2).Extraction chamber (1) according to any one of claims 2 to 6, characterized in that the fan (10) is supported at one end by the partition (3) separating the suction zones (z3) and repression (z2). Caisson extracteur (1) selon l'une quelconque des revendications 2 à 7, caractérisé en ce que les deux cloisons (2, 3) sont parallèles entre-elles et disposées perpendiculairement par rapport aux parois latérales (4, 5, 6, 7) et à la paroi de toit (12) du caisson (1) de sorte que l'axe de la roue (10a) du ventilateur (10) soit parallèle à au moins l'un des axes des raccords de piquage d'aspiration (8) et de refoulement (9).Extraction box (1) according to any one of claims 2 to 7, characterized in that the two partitions (2, 3) are parallel to each other and arranged perpendicular to the side walls (4, 5, 6, 7) and to the roof wall (12) of the box (1) so that the axis of the wheel (10a) of the fan (10) is parallel to at least one of the axes of the suction nozzle connections (8). ) and discharge (9). Caisson extracteur (1) selon l'une quelconque des revendications 2 à 7, caractérisé en ce que les cloisons (2, 3) sont disposées obliquement par rapport aux parois latérales (4, 5, 6, 7) et à la paroi de toit (12) du caisson (1) de sorte que l'axe de la roue (10a) du ventilateur (10) soit oblique par rapport aux axes des raccords de piquage d'aspiration (8) et de refoulement (9).Extraction chamber (1) according to one of Claims 2 to 7, characterized in that the partitions (2, 3) are arranged obliquely with respect to the side walls (4, 5, 6, 7) and to the roof wall (12) of the box (1) so that the axis of the wheel (10a) of the fan (10) is oblique with respect to the axes of the suction nozzle connections (8) and discharge (9). Caisson extracteur (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la paroi de toit (12) est amoviblement fixée aux parois latérales (4, 5, 6, 7) du caisson par des moyens à montage et démontage rapides (18), comprenant par exemple des grenouillères.Extraction box (1) according to any one of claims 1 to 8, characterized in that the roof wall (12) is removably attached to the side walls (4, 5, 6, 7) of the box by means of mounting and rapid disassembly (18), comprising for example latches. Caisson extracteur (1) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la paroi de toit (12) comprend sur sa face extérieure (14) une paire de poignées (19) pour faciliter sa manutention.Extraction box (1) according to any one of claims 1 to 9, characterized in that the roof wall (12) comprises on its outer face (14) a pair of handles (19) to facilitate its handling.
EP17167082.1A 2016-04-20 2017-04-19 Smoke extractor box Active EP3236171B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1653492A FR3050515B1 (en) 2016-04-20 2016-04-20 FUME EXTRACTOR HOUSING

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019107183A1 (en) * 2019-03-20 2020-09-24 Novus air GmbH Fan arrangement and dedusting system
CN114251294A (en) * 2021-12-28 2022-03-29 靖江市易凯通风设备有限公司 Improved structure of axial-flow type high-temperature smoke exhaust fan

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0889290A1 (en) * 1996-12-23 1999-01-07 SIERRA MEDINA, Manuel Domestic apparatus for detecting and expulsing gas
DE29915015U1 (en) * 1999-08-27 1999-10-21 Gebhardt Ventilatoren Wall fan
EP1850012A1 (en) * 2006-04-28 2007-10-31 Aldes Aeraulique Ventilation device
FR2951248A1 (en) * 2009-10-14 2011-04-15 France Air Air extraction case for use during fire in building, has engine equipped in compartment and cooled by cooling air different from flow of air to be extracted, and cooling unit placed towards engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2887018B1 (en) * 2005-06-10 2007-09-07 Soler Et Palau FAN OF A CONTROLLED MECHANICAL VENTILATION SYSTEM.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889290A1 (en) * 1996-12-23 1999-01-07 SIERRA MEDINA, Manuel Domestic apparatus for detecting and expulsing gas
DE29915015U1 (en) * 1999-08-27 1999-10-21 Gebhardt Ventilatoren Wall fan
EP1850012A1 (en) * 2006-04-28 2007-10-31 Aldes Aeraulique Ventilation device
FR2951248A1 (en) * 2009-10-14 2011-04-15 France Air Air extraction case for use during fire in building, has engine equipped in compartment and cooled by cooling air different from flow of air to be extracted, and cooling unit placed towards engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019107183A1 (en) * 2019-03-20 2020-09-24 Novus air GmbH Fan arrangement and dedusting system
DE102019107183B4 (en) 2019-03-20 2021-11-04 Novus air GmbH Fan arrangement and dedusting system
CN114251294A (en) * 2021-12-28 2022-03-29 靖江市易凯通风设备有限公司 Improved structure of axial-flow type high-temperature smoke exhaust fan

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FR3050515A1 (en) 2017-10-27
FR3050515B1 (en) 2019-04-26
ES2938624T3 (en) 2023-04-13
EP3236171B1 (en) 2022-12-14

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