FR2341732A1 - Anti-blast flap for inlet of ventilation system - has flap held by solenoid and released by time switch to close automatically via gravity hinge with horizontal axis - Google Patents

Anti-blast flap for inlet of ventilation system - has flap held by solenoid and released by time switch to close automatically via gravity hinge with horizontal axis

Info

Publication number
FR2341732A1
FR2341732A1 FR7604709A FR7604709A FR2341732A1 FR 2341732 A1 FR2341732 A1 FR 2341732A1 FR 7604709 A FR7604709 A FR 7604709A FR 7604709 A FR7604709 A FR 7604709A FR 2341732 A1 FR2341732 A1 FR 2341732A1
Authority
FR
France
Prior art keywords
flap
open
blast
closed
horizontal axis
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
FR7604709A
Other languages
French (fr)
Other versions
FR2341732B3 (en
Inventor
Pierre Cueille
Julien Wadel
Pierre-Brohet
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.)
APB SA
Original Assignee
APB 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 APB SA filed Critical APB SA
Priority to FR7604709A priority Critical patent/FR2341732A1/en
Publication of FR2341732A1 publication Critical patent/FR2341732A1/en
Application granted granted Critical
Publication of FR2341732B3 publication Critical patent/FR2341732B3/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/745—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity the air flow rate increasing with an increase of air-current or wind pressure
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • 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
    • F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages

Abstract

The anti-blast flap is designed to protect building ventilation systems from the effect of external explosions and automatically descends to seal the ventilation duct inlet. The flap pivots about a horizontal axis aligns horizontally when open and at 45 deg. below the horizontal when closed. Two alternative types of lock hold the flap open, and a third time-switch controlled lock holds the flap closed. A jack acts automatically to re-open the flap. The locks holding the flap open may be a jack operated bolt and an electro-magnetic contact. The former is deployed under normal circumstances and is replaced by the latter in times of emergency. A blast is detected by remote sensors, the magnetic lock de-energised and the flap drop closed. A solenoid operated bolt holds the flap closed, with draws when authorised by the time switch, and the jack lifts the flap back to the open station.
FR7604709A 1976-02-20 1976-02-20 Anti-blast flap for inlet of ventilation system - has flap held by solenoid and released by time switch to close automatically via gravity hinge with horizontal axis Granted FR2341732A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7604709A FR2341732A1 (en) 1976-02-20 1976-02-20 Anti-blast flap for inlet of ventilation system - has flap held by solenoid and released by time switch to close automatically via gravity hinge with horizontal axis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7604709A FR2341732A1 (en) 1976-02-20 1976-02-20 Anti-blast flap for inlet of ventilation system - has flap held by solenoid and released by time switch to close automatically via gravity hinge with horizontal axis

Publications (2)

Publication Number Publication Date
FR2341732A1 true FR2341732A1 (en) 1977-09-16
FR2341732B3 FR2341732B3 (en) 1978-11-10

Family

ID=9169380

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7604709A Granted FR2341732A1 (en) 1976-02-20 1976-02-20 Anti-blast flap for inlet of ventilation system - has flap held by solenoid and released by time switch to close automatically via gravity hinge with horizontal axis

Country Status (1)

Country Link
FR (1) FR2341732A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755856A1 (en) * 1977-12-15 1979-06-21 Bochumer Eisen Heintzmann Sealed air conditioned interior pressure release - uses energy store opening sealing devices at requisite release pressure
FR2851176A1 (en) * 2003-02-19 2004-08-20 Sagefa Attenuator, for effects of explosion in gas flow dust separator/collector, has valve actuated by blast to deflect blast and release excess pressure
EP1688164A1 (en) * 2005-02-02 2006-08-09 Dieter Betz Fire damper for flow passages
ITTV20130008A1 (en) * 2013-01-30 2014-07-31 Aircom Srl DEPRECIABLE COUNTERWEIGHT SYSTEM BY MEANS OF ANCHORAGE ELEMENT WITH PREDETERMINATED LOAD, APPLIED TO NON-RETURN VALVE VALVES.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105716850B (en) * 2016-03-29 2018-11-09 南京恒威防护设备有限公司 Hanging deck type explosion blast proof movable door bidirectional test O&M sensor assembly and explosion wave prevention active door

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755856A1 (en) * 1977-12-15 1979-06-21 Bochumer Eisen Heintzmann Sealed air conditioned interior pressure release - uses energy store opening sealing devices at requisite release pressure
FR2851176A1 (en) * 2003-02-19 2004-08-20 Sagefa Attenuator, for effects of explosion in gas flow dust separator/collector, has valve actuated by blast to deflect blast and release excess pressure
EP1688164A1 (en) * 2005-02-02 2006-08-09 Dieter Betz Fire damper for flow passages
ITTV20130008A1 (en) * 2013-01-30 2014-07-31 Aircom Srl DEPRECIABLE COUNTERWEIGHT SYSTEM BY MEANS OF ANCHORAGE ELEMENT WITH PREDETERMINATED LOAD, APPLIED TO NON-RETURN VALVE VALVES.
WO2014118816A1 (en) * 2013-01-30 2014-08-07 Aircom Srl Anti explosion non return valve coupled to a counterweight by an anchor element that is releasable at a predetermined force

Also Published As

Publication number Publication date
FR2341732B3 (en) 1978-11-10

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse