EP0055665B1 - Verfahren zur Vermeidung von Hitzeschäden an einem Rauchabzugsventilatormotor für Brandfälle und Einrichtung zur Ausführung dieses Verfahrens - Google Patents

Verfahren zur Vermeidung von Hitzeschäden an einem Rauchabzugsventilatormotor für Brandfälle und Einrichtung zur Ausführung dieses Verfahrens Download PDF

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Publication number
EP0055665B1
EP0055665B1 EP81402059A EP81402059A EP0055665B1 EP 0055665 B1 EP0055665 B1 EP 0055665B1 EP 81402059 A EP81402059 A EP 81402059A EP 81402059 A EP81402059 A EP 81402059A EP 0055665 B1 EP0055665 B1 EP 0055665B1
Authority
EP
European Patent Office
Prior art keywords
motor
smoke
protective hood
hood
fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81402059A
Other languages
English (en)
French (fr)
Other versions
EP0055665A1 (de
Inventor
Pierre Avril
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.)
Jeumont Schneider SA
Original Assignee
Jeumont Schneider SA
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 Jeumont Schneider SA filed Critical Jeumont Schneider SA
Priority to AT81402059T priority Critical patent/ATE10435T1/de
Publication of EP0055665A1 publication Critical patent/EP0055665A1/de
Application granted granted Critical
Publication of EP0055665B1 publication Critical patent/EP0055665B1/de
Expired 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
    • A62C3/14—Fire prevention, containment or extinguishing specially adapted for particular objects or places in connection with doors, windows, ventilators, partitions, or shutters, e.g. automatic closing
    • 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
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator
    • 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
    • F24F11/34—Responding to malfunctions or emergencies to fire, excessive heat or smoke by opening air passages

Definitions

  • the present invention relates on the one hand to a method for removing from accidental thermal stresses an aerator fan motor mounted with a protective cover at the end of an exhaust duct, for example on the roof of a building, and capable of evacuating hot smoke in the event of a fire inside the building, for example smoke at 400 ° C for two hours without the fan flow falling by more than 10%.
  • Document GB-A-1 079 011 already discloses a device which includes a temperature detector which triggers, in the event of a sudden rise in the temperature of the gases evacuated by an aerator, the actuation of members for removing hoods of protection and of a member maintaining at the end of travel the covers remote from the motor-ventilator ventilator assembly.
  • the aerator fan drive motor does not need to be specially designed or to be oversized, that is to say provided to withstand abnormal heating or provided with an auxiliary device.
  • cooling supply of fresh air automatically activated in the event of fire or provided in a thermally insulated compartment, as is the case with known equipment of this kind.
  • the invention also relates to the device for implementing this method.
  • the ventilator ventilator it is possible to use, to drive the ventilator ventilator, a motor of normal construction, suspended in a normal manner, without dampers, with a protective cover made of polyester resin, instead of a metallic cover, as is the case. case for known material of this kind.
  • a centrifugal turbine is fixed at the end of the motor shaft upstream thereof relative to the direction of flow of the fumes in order to discharge them radially away from the motor and, so known per se, when hot fumes appear, the protective cover is removed from said motor so as to place said motor in an ambient cooling environment corresponding to normal atmospheric conditions.
  • the device according to the present invention for implementing this method comprises a centrifugal turbine mounted at the end of the motor shaft upstream of the latter relative to the direction of evacuation of the fumes, a temperature detector produced under the form of a fixing means used to fix the protective cover on the motor-ventilator fan assembly, said fixing means being of fusible material melting under the action of hot fumes, and a member for removing the protective cover produced in the form of a spring mechanism permanently exerting a force tending to project said cover outwards, the fusion of said fixing means releasing the action of this force.
  • the motor 1 with a vertical axis rests on a plate 2 fixed with flat irons 3 on the suction flange 4 disposed at the top of the evacuation sheath (not shown in the drawing).
  • a centrifugal turbine 5 is fixed to the lower shaft end 6 of the motor 1.
  • the clearance 7 formed between the flange 4 and the turbine 5 is calculated to take account of possible deformations of these two parts under the effect of heat when the ventilating ventilator must evacuate hot smoke following a fire.
  • a protective cover for example in two parts 8 and 9 connected by bolts 10, surrounds the motor-ventilator ventilator assembly, except that its upper part is open and provided with a protective mesh 11.
  • Vertical guide rods 12 are fixed at their lower part to the flat bars 3 and are of height slightly less than that of the protective cover 8-9. They pass through the brackets 13 fixed to the part 8 of this cover by bolts. Below these brackets 13 the rods 12 are surrounded by a cylindrical compression spring 14. Just above the brackets 13, the rods 12 are pierced with a transverse hole for the passage of a pin 15 of fusible alloy of known type melting at a temperature lower than that of hot smoke following a fire, for example at 70 ° C.
  • Figure 3 gives a detailed view of the guide rods 12 in the form of tubes provided with a thrust washer 16 at their upper part.
  • the pin 15 maintains the spring 14 in compression.
  • the protective cover is thus fixed in position by the brackets 13 so as to abut at its lower part against the flat irons 3.
  • the pin 15 melts, the action of the spring projects the cover towards the high.
  • the brackets 13 arrive at the top of the rods 12 against the stops 16.
  • a locking at the end of travel of the cover such as a pawl or a ball placed in the top of the rod 12 (not shown in the drawing), blocks these brackets and therefore maintains the hood in the raised position.
  • the engine 1 is thus placed in an ambient cooling environment little different from that corresponding to its normal operation.
  • the type of the motor used can then be normal from the point of view of the heating of its windings.
  • the fixing of the lugs 19 to the flat irons 3 is done using bolts 20 of fusible alloy (not shown) of the same kind as that used for the pins 15.
  • bolts 20 of fusible alloy not shown
  • the spring 18 ejects the cap 17 away from the motor-ventilator fan assembly.
  • a retaining chain 21 fixed on one side to the cap 17 and on the other for example to the suction flange 4 prevents the cap 17 from possibly falling on passers-by.
  • the protective mesh 22 is not integral with the cap 17 and remains in place.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Combustion & Propulsion (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Protection Of Generators And Motors (AREA)
  • Ventilation (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (4)

1. Verfahren, durch welches ein Lüftungsventilatormotor (1) unvorhergesehenen thermischen Beanspruchungen entzogen wird, welcher mit einer Schutzhaube (8-9, 17) am Ende einer Abzugshaube beispielsweise auf dem Dach eines Gebäudes angebracht ist und geeignet ist, um heißen Rauch im Falle eines Brandes im Inneren des Gebäudes abzuführen, dadurch gekennzeichnet, daß eine Zentrifugalturbine am Ende der Motorwelle und in Strömungsrichtung des Rauches vor dem Motor befestigt wird, um den Rauch radial von dem Motor fortzuführen, und daß beim Auftreten von heißem Rauch in an sich bekannter Weise die Schutzhaube von dem Motor entfernt wird, so daß der Motor in eine kühlende Umgebung gelangt, die den normalen atmosphärischen Bedingungen entspricht.
2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, mit einem Temperaturdetektor, der in Form einer Befestigungseinrichtung (15, 20) verwirklicht ist, wobei diese Befestigungseinrichtung (15 oder 20) aus einem schmelzbaren Material gebildet ist, das unter der Wirkung des heißen Rauches schmilzt, sowie mit einem Organ zur Entfernung der Schutzhaube (8-9, 17), welches in Form eines Federmechanismus (14 oder 18), verwirklicht ist, der dauernd eine Kraft ausübt, welche bestrebt ist, die genannte Haube nach Außen zu schleudern, wobei das Schmelzen der Befestigungseinrichtung die Wirkung dieser Kraft freigibt, dadurch gekennzeichnet, daß sie ferner eine Zentrifugalturbine umfaßt, die am Ende der Motorwelle und in Abströmrichtung vor dem Motor befestigt ist, und daß der Temperaturdetektor zur Befestigung der Schutzhaube (8-9, 17) auf der Motor-Ventilator-Einheit dient.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie ein Organ (12-13) zur Führung der Schutzhaube (8-9) aus ihrer Normalstellung in eine entfernte Stellung sowie einen Mechanismus (16) zum Arretieren und Blockieren der genannten Haube am Ende ihrer Bewegungsbahn umfaßt.
4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Schutzhaube eine Glocke (17) ist, welche über den Lüftungsventilator aufgesetzt ist, und daß die genannte Glocke durch eine Haltekette (21) am Ende ihrer Bewegungsbahn entfernt von der Motor-Lüfterventilator-Einheit gehalten wird.
EP81402059A 1980-12-31 1981-12-23 Verfahren zur Vermeidung von Hitzeschäden an einem Rauchabzugsventilatormotor für Brandfälle und Einrichtung zur Ausführung dieses Verfahrens Expired EP0055665B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81402059T ATE10435T1 (de) 1980-12-31 1981-12-23 Verfahren zur vermeidung von hitzeschaeden an einem rauchabzugsventilatormotor fuer brandfaelle und einrichtung zur ausfuehrung dieses verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8027915 1980-12-31
FR8027915A FR2497299A1 (fr) 1980-12-31 1980-12-31 Procede pour soustraire aux contraintes thermiques accidentelles un moteur de ventilateur aerateur capable d'evacuer des fumees chaudes en cas d'incendie et dispositif pour la mise en oeuvre de ce procede

Publications (2)

Publication Number Publication Date
EP0055665A1 EP0055665A1 (de) 1982-07-07
EP0055665B1 true EP0055665B1 (de) 1984-11-28

Family

ID=9249705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81402059A Expired EP0055665B1 (de) 1980-12-31 1981-12-23 Verfahren zur Vermeidung von Hitzeschäden an einem Rauchabzugsventilatormotor für Brandfälle und Einrichtung zur Ausführung dieses Verfahrens

Country Status (6)

Country Link
US (1) US4494450A (de)
EP (1) EP0055665B1 (de)
AT (1) ATE10435T1 (de)
DE (1) DE3167513D1 (de)
ES (1) ES8300955A1 (de)
FR (1) FR2497299A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6074181A (en) * 1998-07-09 2000-06-13 Ff Seeley Nominees Pty. Ltd. Shroud for fan motor cooling
US6746325B2 (en) 2002-02-06 2004-06-08 Genlyte Thomas Group Llc Heat distorting support clip for air handling luminaire
US7682231B2 (en) 2004-01-20 2010-03-23 Greenheck Fan Corporation Exhaust fan assembly
US7320636B2 (en) * 2004-01-20 2008-01-22 Greenheck Fan Corporation Exhaust fan assembly having flexible coupling
FR2878022B1 (fr) * 2004-11-18 2007-02-02 France Air Dispositif de desenfumage equipe d'un ventilateur d'aspiration d'air a debit controle
US8057077B2 (en) * 2005-12-23 2011-11-15 Canlyte Inc. Support device
DE102006012356A1 (de) * 2006-03-17 2007-09-20 Gebhardt Ventilatoren Gmbh & Co. Kg Ventilatoreinheit
US7673430B1 (en) 2006-08-10 2010-03-09 Koninklijke Philips Electronics, N.V Recessed wall-wash staggered mounting system
US20100056039A1 (en) * 2007-04-12 2010-03-04 Belimo Holding Ag Drive system for a fire protection flap
FR3050808B1 (fr) * 2016-04-28 2018-06-01 Aereco Ventilateur d'extraction d'air a section de passage variable en cas d'incendie
CN110242594B (zh) * 2019-06-24 2020-12-04 湖北天兆智能消防工程有限公司 一种火灾通道烟雾快速抽离装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA515441A (en) * 1955-08-09 Keith Blackman Limited Cowlings for use with ventilating fans
US3182581A (en) * 1962-12-03 1965-05-11 Western Eng & Mfg Co Explosion and fire release ventilator
GB1079011A (en) * 1963-04-16 1967-08-09 Myson Heat Exchangers Improvements in or relating to ventilating systems
US3399500A (en) * 1966-07-25 1968-09-03 Plastic Products Of Texas Inc Automatic roof vent
US3715967A (en) * 1971-03-22 1973-02-13 Jenn Air Corp Power roof exhauster or heat relief vent
US3728956A (en) * 1971-05-24 1973-04-24 Jenn Air Corp Smoke and heat relief vent
DE2249702C2 (de) * 1972-10-11 1982-08-26 Brown, Boveri & Cie Ag, 6800 Mannheim Entlüftungseinrichtung
NO133870C (de) * 1975-01-31 1976-07-14 Ole A Larsen

Also Published As

Publication number Publication date
ES507655A0 (es) 1982-11-01
EP0055665A1 (de) 1982-07-07
DE3167513D1 (en) 1985-01-10
FR2497299A1 (fr) 1982-07-02
ATE10435T1 (de) 1984-12-15
US4494450A (en) 1985-01-22
ES8300955A1 (es) 1982-11-01
FR2497299B1 (de) 1983-01-21

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