EP4303500A1 - Dispositif d'introduction d'air amené - Google Patents

Dispositif d'introduction d'air amené Download PDF

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Publication number
EP4303500A1
EP4303500A1 EP22183557.2A EP22183557A EP4303500A1 EP 4303500 A1 EP4303500 A1 EP 4303500A1 EP 22183557 A EP22183557 A EP 22183557A EP 4303500 A1 EP4303500 A1 EP 4303500A1
Authority
EP
European Patent Office
Prior art keywords
air
opening
distribution element
supply air
introducing supply
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.)
Pending
Application number
EP22183557.2A
Other languages
German (de)
English (en)
Inventor
Volker Biedenbach
Volker DANIEL
Thomas Winkler
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.)
Transmit Gesellschaft fuer Technologietransfer mbH
Technische Hochschule Mittelhessen
Original Assignee
Transmit Gesellschaft fuer Technologietransfer mbH
Technische Hochschule Mittelhessen
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 Transmit Gesellschaft fuer Technologietransfer mbH, Technische Hochschule Mittelhessen filed Critical Transmit Gesellschaft fuer Technologietransfer mbH
Priority to EP22183557.2A priority Critical patent/EP4303500A1/fr
Publication of EP4303500A1 publication Critical patent/EP4303500A1/fr
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F24F13/0218—Flexible soft ducts, e.g. ducts made of permeable textiles
    • 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
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • 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
    • F24F7/10—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 with air supply, or exhaust, through perforated wall, floor or ceiling
    • 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
    • F24F2007/0025—Ventilation using vent ports in a wall
    • 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
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0608—Perforated ducts

Definitions

  • the present invention relates to a device for introducing supply air, preferably for smoke extraction from rooms.
  • a fire produces heat and hot smoke gases.
  • Smoke gases represent the greatest danger to people in fires in buildings because they limit visibility in the escape routes and also have a toxic effect.
  • the legislature requires that "the emergence of a fire and the spread of fire and smoke (fire spread) be prevented and that in the event of a fire, the rescue of people and animals as well as effective extinguishing work are possible.”
  • Smoke and heat extraction systems are an important element in achieving these protection goals.
  • the term smoke and heat extraction systems (RWA) is a generic term for natural smoke extraction systems (NRA) and mechanical smoke extraction systems (MRA).
  • a RWA usually consists of smoke and heat exhaust devices (RWG), triggering and operating elements, energy supply, cables, supply air supply (e.g. via a supply air module) and possibly other components such as smoke protection curtains.
  • Smoke and heat extraction systems are usually activated by fire alarm systems. This takes place depending on the object-specific conditions (fire matrix) after a fire has been detected.
  • the function of a conventional smoke and heat extraction system is shown schematically in the figure Fig. 1 shown.
  • the object of the present invention is to minimize the opening areas in the building envelope necessary to limit the supply air speed by means of a device for introducing supply air for smoke extraction systems and thus to significantly reduce the disadvantages of conventional smoke extraction systems.
  • the device according to the invention for introducing supply air 100 for extracting smoke from a room B comprises at least one housing 1 with a first opening 1a for arrangement on or in a component A of the room B, and a second opening 1b which faces the room B, as well as an air distribution element 4, which is arranged within the housing 1 in such a way that air flows through a first opening 1a into the air distribution element 4 and the air distribution element 4 can preferably unfold during operation from a second opening 1b into the space B due to the pressure difference that occurs.
  • “Unfolding” here means that the air distribution element 4 increases its volume during this process.
  • the component A generally includes elements that enclose the space B; These include, for example, walls, ceilings, floors but also roof surfaces, gates, windows, doors or ventilation pipes.
  • the housing 1 can also be formed at least in sections by the reveal of a wall opening or by part of a ventilation duct.
  • An operating case can be a fire or a commissioning of the device for introducing supply air for testing, maintenance or ventilation purposes.
  • the air distribution element 4 is characterized in that its surface in the unfolded state is larger than the cross-sectional area of the opening 1b, with its geometric shape being freely selectable, for example cylindrical.
  • the air distribution element 4 can have at least one stiffening element for shaping.
  • the surface of the air distribution element 4 is at least partially gas-permeable and, for example, a fabric, so that the air can flow through the opening 1a and the housing 1 into the room B via the unfolded air distribution element 4.
  • the air distribution element can comprise 4 individual elements with a dimensionally stable surface that can be extended telescopically.
  • the surface of the individual elements is at least partially permeable to gas. When not unfolded, these individual elements are pushed apart like a telescope.
  • the supply air speed is the flow speed at which the air flows from the air distribution element 4 into the room B.
  • the size of the surface of the air distribution element 4 is selected so that a desired maximum value for the supply air speed is not exceeded. Common maximum supply air speeds in the event of a fire this amounts to approx. 1m/s. In other operating cases, the maximum supply air speed may deviate from this.
  • the size of the surface of the air distribution element that can be flowed through depends on the volume flow that is to be supplied through the device for introducing supply air 100.
  • the flow velocity in the opening 1b is 10 m/s and the supply air velocity from the air distribution element 4 into the room B should not exceed 1 m/s, then this results in a surface area of the air distribution element that is at least by the factor 10 is larger than the cross-sectional area of the opening 1b.
  • Suitable materials for the air distribution element 4 are, for example, textile fabrics made of cotton, synthetic fibers or the like, and in the case of dimensionally stable individual elements, metal sheets or plastics.
  • the device for introducing supply air 100 also has at least one fan 2.
  • the fan 2 is arranged in the housing in such a way that it can convey air through the first opening 1a into the air distribution element 4 and unfold it.
  • a relatively high air volume flow for example 20,000 m 3 /h, can be conveyed into room B by the fan 2.
  • the device for introducing supply air 100 also has an external closure 3. This is arranged at the opening 1a so that it can close it.
  • This external closure 3 serves as burglary protection, thermal insulation, weather and moisture protection as well as protection against vermin and dirt.
  • the outer closure 3 can be designed with one or more leaves (e.g. louvre flap, door, roller blind-like closure).
  • the device for introducing supply air 100 further comprises an inner closure 5. This is arranged at the opening 1b so that it can close it. When closed, this inner closure 5 protects the device for introducing supply air 100 from contamination, Damage, vandalism and can serve as an architectural design element.
  • the inner closure 5 can be designed with one or more leaves (e.g. louvre flap, door, roller blind-like closure).
  • the device for introducing supply air 100 also has a lock 6 of this inner closure 5.
  • the lock 6 protects against improper or accidental opening of the lock 5.
  • the device for introducing supply air 100 also has a deployment element 7.
  • This is designed so that the air distribution element 4 can unfold without or with small pressure differences or is supported during the unfolding.
  • the unfolding element 7 can be designed, for example, as a spring or can be driven or operated with fluids (for example pneumatically or hydraulically).
  • the device for introducing supply air 100 also has a ventilation line 8 with any cross section. This is arranged at the second opening 1b so that air can flow from the first opening 1a through the second opening 1b and the ventilation line 8 into the room B.
  • the air distribution element 4, which is arranged at the end of the ventilation line 8, can also unfold in an area of the room B that is spatially distant from the openings 1a and 1b.
  • the ventilation line 8 can be flexible or rigid.
  • the device for introducing supply air 100 has a ventilation line 8 with an arbitrary cross section, which is arranged at the first opening 1a so that air can flow through this ventilation line into the opening 1a of the device for introducing supply air 100.
  • the device for introducing supply air 100 is activated via an electrical signal.
  • This activation is described as an example in exemplary embodiments 1 to 4. If locks 3 and/or 5 are present, they will be unlocked.
  • the outer closure 3 opens independently inner closure 5 opens independently or is opened by the unfolding air distribution element 4.
  • the air distribution element 4 unfolds due to pressure differences and/or an additional unfolding element 7, over whose large surface the supply air can flow into room B at low air speeds.
  • a fire event is detected using smoke detector D.
  • the components of the air conditioning system L e.g. fan, flaps, ...) are put into the state that is required to promote the planned air flow into the ventilation line 8.
  • the inner closure 5 of the device described here for introducing supply air100 is electrically unlocked by a control signal from the fire alarm system C.
  • the fan of the air conditioning system L conveys an air flow through the first opening 1a of the housing 1 and the second opening 1b of the housing into the air distribution element 4.
  • the air distribution element 4 unfolds due to the air flow and, if necessary, opens the inner closure 5 completely. When the air distribution element is fully deployed, the projected air volume flow flows into room B with little momentum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Ventilation (AREA)
EP22183557.2A 2022-07-07 2022-07-07 Dispositif d'introduction d'air amené Pending EP4303500A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22183557.2A EP4303500A1 (fr) 2022-07-07 2022-07-07 Dispositif d'introduction d'air amené

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22183557.2A EP4303500A1 (fr) 2022-07-07 2022-07-07 Dispositif d'introduction d'air amené

Publications (1)

Publication Number Publication Date
EP4303500A1 true EP4303500A1 (fr) 2024-01-10

Family

ID=82656509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22183557.2A Pending EP4303500A1 (fr) 2022-07-07 2022-07-07 Dispositif d'introduction d'air amené

Country Status (1)

Country Link
EP (1) EP4303500A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006102996A1 (fr) * 2005-03-29 2006-10-05 M+W Zander Gebäudetechnik GmbH Systeme de ventilation
EP1785201A2 (fr) * 2005-11-10 2007-05-16 Jürgen Eidmann Dispositif de protection contre la fumée
DE102011013015A1 (de) * 2011-03-03 2012-09-06 Jens Bader Druckbelüfter zur Brandbekämpfung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006102996A1 (fr) * 2005-03-29 2006-10-05 M+W Zander Gebäudetechnik GmbH Systeme de ventilation
EP1785201A2 (fr) * 2005-11-10 2007-05-16 Jürgen Eidmann Dispositif de protection contre la fumée
DE102011013015A1 (de) * 2011-03-03 2012-09-06 Jens Bader Druckbelüfter zur Brandbekämpfung

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