EP0341809A1 - Device for the automatic actuation particularly of ventilation flaps - Google Patents

Device for the automatic actuation particularly of ventilation flaps Download PDF

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Publication number
EP0341809A1
EP0341809A1 EP89301990A EP89301990A EP0341809A1 EP 0341809 A1 EP0341809 A1 EP 0341809A1 EP 89301990 A EP89301990 A EP 89301990A EP 89301990 A EP89301990 A EP 89301990A EP 0341809 A1 EP0341809 A1 EP 0341809A1
Authority
EP
European Patent Office
Prior art keywords
fuse
clamp
arm
piercing
rod member
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
EP89301990A
Other languages
German (de)
French (fr)
Other versions
EP0341809B1 (en
Inventor
Hans Dieter Hüsges
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.)
Colt International Holdings AG
Colt International Ltd
Original Assignee
Colt International Holdings AG
Colt International Ltd
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 Colt International Holdings AG, Colt International Ltd filed Critical Colt International Holdings AG
Priority to AT89301990T priority Critical patent/ATE79558T1/en
Publication of EP0341809A1 publication Critical patent/EP0341809A1/en
Application granted granted Critical
Publication of EP0341809B1 publication Critical patent/EP0341809B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/24—Operating or controlling mechanisms
    • A62C2/246—Operating or controlling mechanisms having non-mechanical actuators
    • A62C2/248—Operating or controlling mechanisms having non-mechanical actuators pneumatic
    • 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
    • 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
    • F24F2013/1466—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 with pneumatic means

Definitions

  • the invention relates to a device for the pref­erably pneumatic automatic actuation particularly of ventilation flaps, ventilation louvres and the like in smoke and heat offtake installations, in a construction in accordance with the preamble to claim 1.
  • a device of this kind is known from DE-OS 36 06 560.
  • a glass fuse element is disposed inside a housing receiving a locking rod member, which housing is open at the bottom and top in the region of the glass element and so has inflow and outflow openings but bounds the glass bulb element laterally, which may lead to a delayed response behaviour of the fuse particularly if it is disposed in the roof region of a building.
  • a predetermined bending point may be formed in the L-clamp, which predetermined bending point offers the device additional operational reliability.
  • the rupture disc usually provided in this cartridge breaks at a pressure which can be preset.
  • This pressure acts, via the locking rod member and the fuse element, on the clamp so that, when a loading which can be pre­determined is exceeded, the clamp bends or shears off at the predetermined bending point so that the piercing piston can be activated.
  • the device 1 for the automatic actuation of ventilation flaps for example, has a piercing piston unit 2 with a piercing piston 3 which has to be kept in a safety position through a locking unit 4 and has a locking rod member 5.
  • a compressed air cartridge 6 has to be pierced by the piercing piston 3 and caused to discharge.
  • Supported on the end of the locking rod member 5 projecting out of the housing 7 of the locking unit is one end of a thermal glass-bulb element 8.
  • the other end of this thermal glass-bulb element 8 is supported, via a screw element 9, against an L-shaped clamp 11 in Figure 1 and against a U-shaped clamp 12 in Figures 6 to 8.
  • the arms 13 and 14 of the L-shaped clamp 11 or 15, 16, 17 of the U-shaped clamp 12 are formed by relatively narrow square sections.
  • the clamps 11 and 12 have a longitudinal central plane which is arranged inclined at about 45° to the vertical 18 so that the glass-bulb fuse element can be blown against laterally from below and obliquely from above and hence freely altogether.
  • the arm In the longitudinal region of the arm 13 or 15 engaging over the thermal glass-bulb fuse element 8, the arm is made circular with a flow space 19 so that the inflowing air can emerge unhindered through the flow space 19.
  • the L-shaped clamp 11 has a predetermined bending point 21 in the region of its connection 20 to the housing, which predetermined bending point ensures that the device is in a position to work in an operationally reliable manner in the way already outlined, for example in the case where the capillary tube 22 of the thermal glass-bulb element has been damaged, for example during insertion, and the liquid 23 with which the thermal glass-bulb element is filled has emerged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fuses (AREA)
  • Temperature-Responsive Valves (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The device (1) has a locking unit (4) which holds a piercing piston (3) for a compressed air car­tridge (6) in its locked position. The device comprises a thermo fuse (8) which breaks when a critical temp­erature is exceeded and which is supported, at one end, on a longitudinally movable locking rod member (5) which is in operational communication with the piercing piston (3). An L-shaped clamp (11) which engages with an arm (13) opening (19) over the fuse (8) has a central longitudinal plane inclined to the vertical (18) and supports the other end of the fuse (8). The arm (13) is provided with a predetermined bending point (21) in the region of its connection (20) to the housing (7) of the locking unit (4) to allow the arm to bend or shear off if the cartridge (6) happens to be heated sufficiently due to failure of the fuse, to break its rupture disc and exert a force on the locking rod member (5), thus enabling the piercing piston (3) to be activated.

Description

  • The invention relates to a device for the pref­erably pneumatic automatic actuation particularly of ventilation flaps, ventilation louvres and the like in smoke and heat offtake installations, in a construction in accordance with the preamble to claim 1.
  • A device of this kind is known from DE-OS 36 06 560. In this device, a glass fuse element is disposed inside a housing receiving a locking rod member, which housing is open at the bottom and top in the region of the glass element and so has inflow and outflow openings but bounds the glass bulb element laterally, which may lead to a delayed response behaviour of the fuse particularly if it is disposed in the roof region of a building.
  • It is the object of the present invention to provide, with structurally simple means, a device of the kind mentioned at the beginning having optimized response behaviour of the fuse element. For the solution to this problem, reference should be made to the features given in the characterising part of claim 1. With regard to further developments, reference should be made to claims 2 to 5 and also to claims 6 and 7. As a result of the supporting of the other end of the fuse by a U-shaped or L-shaped clamp having a longitudinal central plane inclined to the vertical and preferably formed by narrow square sections, the fuse can be blown against almost unhindered from all sides even in devices installed in the roof region of buildings so that transverse streams of air occurring particularly in the roof region are in a position to contribute to heating of the fuse element and to ensure the response necessary for fire protection.
  • In order to optimize the response behaviour further, particularly also for the case where a fuse element does not respond, for example as a result of the destruction of the capillary tube of a glass bulb, a predetermined bending point may be formed in the L-clamp, which predetermined bending point offers the device additional operational reliability.
  • On rising temperature in the event of fire and rising pressure in a conventional CO₂ compressed-­air cartridge as an energy-carrying unit, the rupture disc usually provided in this cartridge breaks at a pressure which can be preset. This pressure acts, via the locking rod member and the fuse element, on the clamp so that, when a loading which can be pre­determined is exceeded, the clamp bends or shears off at the predetermined bending point so that the piercing piston can be activated.
  • Some ways of carrying out the present invention will now be described in detail by way of example with reference to drawings showing specific embodiments of the present invention. In the drawings:
    • Figure 1 is a side view device according to the invention having an L-shaped clamp;
    • Figure 2 is a front view of the device of Figure 1;
    • Figure 3 is a plan view of the device of Figure 1;
    • Figure 4 is a side view to a larger size of the L-shaped clamp of the device of Figure 1;
    • Figure 5 is an enlarged view of the region of the clamp shown in Figure 4 which is provided with the predetermined bending point;
    • Figure 6 is a side view similar to Figure 1, showing an alternative device according to the invention having a U-shaped clamp;
    • Figure 7 is a front view of the device of Figure 6, and
    • Figure 8 is a plan view of the device of Figure 6.
  • With reference now to the drawings, the device 1, for the automatic actuation of ventilation flaps for example, has a piercing piston unit 2 with a piercing piston 3 which has to be kept in a safety position through a locking unit 4 and has a locking rod member 5. In the event of fire, a compressed air cartridge 6 has to be pierced by the piercing piston 3 and caused to discharge. Supported on the end of the locking rod member 5 projecting out of the housing 7 of the locking unit is one end of a thermal glass-bulb element 8. The other end of this thermal glass-bulb element 8 is supported, via a screw element 9, against an L-shaped clamp 11 in Figure 1 and against a U-shaped clamp 12 in Figures 6 to 8. The arms 13 and 14 of the L- shaped clamp 11 or 15, 16, 17 of the U-shaped clamp 12 are formed by relatively narrow square sections. The clamps 11 and 12 have a longitudinal central plane which is arranged inclined at about 45° to the vertical 18 so that the glass-bulb fuse element can be blown against laterally from below and obliquely from above and hence freely altogether. In the longitudinal region of the arm 13 or 15 engaging over the thermal glass-bulb fuse element 8, the arm is made circular with a flow space 19 so that the inflowing air can emerge unhindered through the flow space 19.
  • As can be seen in particular in the illustrations shown in Figures 4 and 5, the L-shaped clamp 11 has a predetermined bending point 21 in the region of its connection 20 to the housing, which predetermined bending point ensures that the device is in a position to work in an operationally reliable manner in the way already outlined, for example in the case where the capillary tube 22 of the thermal glass-bulb element has been damaged, for example during insertion, and the liquid 23 with which the thermal glass-bulb element is filled has emerged.

Claims (7)

1. A device for the preferably pneumatic auto­matic actuation particularly of ventilation flaps, ventilation louvres and the like in smoke and heat offtake installations, having a locking unit which holds one or more piercing pistons of an energy-carrying unit in their locked position, which comprises a fuse responding depending on temperature, particularly a thermal fuse element which bursts when a critical temperature is exceeded, which fuse can be supported at one end on a longitudinally movable locking rod member which is in operational communication with the piercing piston, or pistons, characterised in that a U-shaped or L-shaped clamp (11, 12), which engages over the fuse and has a central longitudinal plane inclined to the vertical (18), is provided to support the other end of the fuse (8).
2. A device according to claim 1, characterised in that the longitudinal central plane of the clamp (11, 12) is inclined at about 45° to the vertical (18).
3. A device according to claim 1 or 2, char­acterised in that the clamp (11, 12) is held on one or two lateral outer edge region(s) of a housing member (7) receiving the locking rod member (5).
4. A device according to any one of the claims 1 to 3, characterised in that the arms (13, 14, 15, 16, 17) of the clamp are substantially formed by narrow square sections.
5. A device according to any one of the claims 1 to 4, characterised in that the arm (13) of the clamp (11) engaging over the fuse (7) is made sub­stantially circular with a flow space (19), in its longitudinal region bounding the fuse (8).
6. A device for the preferably pneumatic auto­matic actuation particularly of ventilation flaps, ventilation louvres and the like in smoke and heat offtake installations having a locking unit holding one or more piercing pistons of an energy-carrying unit in their locked position, which comprises a fuse responding depending on temperature, particularly a thermal fuse element which bursts when a critical temperature is exceeded, which fuse can be supported, at one end, on a longitudinally movable locking rod member which is in operational communication with the piercing piston, preferably with an L-shaped clamp in arrangement in accordance with any one of the claims 1 to 5, characterised in that at least one arm (13) of the L-shaped clamp (11) engaging over the fuse (8) is provided with a predetermined bending point (21).
7. A device according to claim 6, characterised in that the predetermined bending point (21) in the arm (13) engaging over the fuse (8) is provided in a region close to its connection (20) to the housing.
EP89301990A 1988-05-10 1989-02-28 Device for the automatic actuation particularly of ventilation flaps Expired - Lifetime EP0341809B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89301990T ATE79558T1 (en) 1988-05-10 1989-02-28 FORCED CONTROL DEVICE, PARTICULARLY FOR VENTILATION FLAPS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8806181U DE8806181U1 (en) 1988-05-10 1988-05-10
DE8806181U 1988-05-10

Publications (2)

Publication Number Publication Date
EP0341809A1 true EP0341809A1 (en) 1989-11-15
EP0341809B1 EP0341809B1 (en) 1992-08-19

Family

ID=6823900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89301990A Expired - Lifetime EP0341809B1 (en) 1988-05-10 1989-02-28 Device for the automatic actuation particularly of ventilation flaps

Country Status (3)

Country Link
EP (1) EP0341809B1 (en)
AT (1) ATE79558T1 (en)
DE (2) DE8806181U1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040401A (en) * 1979-01-25 1980-08-28 Holdfire Offshore Ltd Improvements relating to fusible link assemblies
DE3429178A1 (en) * 1984-08-08 1986-02-20 Josef 4815 Schloss Holte Fortmeier Opening device for smoke and heat extraction flaps
DE3606560A1 (en) * 1986-02-28 1987-09-03 Colt Int Holdings Device for compulsory actuation of, in particular, ventilation flaps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040401A (en) * 1979-01-25 1980-08-28 Holdfire Offshore Ltd Improvements relating to fusible link assemblies
DE3429178A1 (en) * 1984-08-08 1986-02-20 Josef 4815 Schloss Holte Fortmeier Opening device for smoke and heat extraction flaps
DE3606560A1 (en) * 1986-02-28 1987-09-03 Colt Int Holdings Device for compulsory actuation of, in particular, ventilation flaps

Also Published As

Publication number Publication date
DE68902504T2 (en) 1993-01-07
DE68902504D1 (en) 1992-09-24
EP0341809B1 (en) 1992-08-19
ATE79558T1 (en) 1992-09-15
DE8806181U1 (en) 1988-06-30

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