EP3885666A1 - Dispositif d'arrêt destiné à être utilisé dans une conduite d'air d'une installation technique de ventilation ou d'une installation de désenfumage mécanique - Google Patents

Dispositif d'arrêt destiné à être utilisé dans une conduite d'air d'une installation technique de ventilation ou d'une installation de désenfumage mécanique Download PDF

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Publication number
EP3885666A1
EP3885666A1 EP20165682.4A EP20165682A EP3885666A1 EP 3885666 A1 EP3885666 A1 EP 3885666A1 EP 20165682 A EP20165682 A EP 20165682A EP 3885666 A1 EP3885666 A1 EP 3885666A1
Authority
EP
European Patent Office
Prior art keywords
shut
coating
housing
medium
flap
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
EP20165682.4A
Other languages
German (de)
English (en)
Other versions
EP3885666B1 (fr
EP3885666B9 (fr
Inventor
Jutta Block
Björn Beutelt
Michael Buschmann
Ronny Sachse
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.)
Gebrueder Trox GmbH
Original Assignee
Gebrueder Trox GmbH
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 Gebrueder Trox GmbH filed Critical Gebrueder Trox GmbH
Priority to PL20165682.4T priority Critical patent/PL3885666T3/pl
Priority to EP20165682.4A priority patent/EP3885666B9/fr
Publication of EP3885666A1 publication Critical patent/EP3885666A1/fr
Publication of EP3885666B1 publication Critical patent/EP3885666B1/fr
Application granted granted Critical
Publication of EP3885666B9 publication Critical patent/EP3885666B9/fr
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
    • F24F13/08—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
    • 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
    • F24F11/30—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
    • 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

Definitions

  • the invention relates to a shut-off device for use in an air line of a ventilation system or a mechanical smoke extraction system, the shut-off device having a housing through which a gaseous medium flows, preferably a square cross-section, and a housing wall mounted in the housing so as to be pivotable about a pivot axis Includes damper blade.
  • shut-off devices In their closed position, shut-off devices should close the flow cross-section of the air line and prevent the gaseous medium from flowing. If the shut-off device is designed as a fire damper, the damper blade is made of calcium silicate. Corresponding shut-off devices can indeed be used in air lines for ventilation of, for example, living or work rooms, but not in atmospheres that, planned or unscheduled, exert a damaging and / or corrosion-causing effect on the shut-off device due to chemical reactions, since the areas of the Shut-off devices that are in contact with the medium flowing in the housing can be attacked by a chemically aggressive gaseous medium.
  • the object of the invention is to avoid the above-mentioned disadvantages and to provide a shut-off device that is harmful even in atmospheres that are scheduled or unscheduled due to chemical reactions and / or exert corrosion of metallic and non-metallic materials causing effect on the shut-off device, can be used.
  • shut-off device for use of the shut-off device in connection with a chemically aggressive gaseous medium, at least all areas of the shut-off device that are in contact with the medium flowing in the housing are protected against damaging chemical reactions with this medium or due to this medium, are designed to be resistant, the resistance being formed either by the material of the areas coming into contact with the flowing medium themselves or by a coating applied to the areas coming into contact with the flowing medium.
  • the pivot axis can be formed by a stationary axis or by a shaft which is non-rotatable with respect to the flap leaf.
  • the axle or the shaft can be coated with Teflon, for example.
  • the shut-off device according to the invention therefore has no metallic surfaces, at least in the areas that are in contact with the medium flowing in the housing.
  • a chemically aggressive gaseous medium is understood as meaning, for example, contaminated and aggressive exhaust air, for example from laboratories and laboratory fume cupboards, from the chemical industry, from electroplating or from the automotive industry.
  • This exhaust air can be chemically contaminated with a wide variety of substances, some of which are very aggressive, such as acids or bases. However, it can also be exhaust air from commercial kitchens.
  • shut-off device which is, for example, a fire damper, can be used safely as long as one conventional shut-off device designed as a fire damper in an air line for ventilation of, for example, living or work rooms.
  • all areas is understood to mean the areas / components of the shut-off device which come into contact with the flowing medium and which are relevant for the function of the shut-off device. These are, for example, the inside of the housing wall, the flap leaf, the bearing or the like. However, it can also be the outside (s) of the shut-off device, which is (are) used, for example, in a laboratory room.
  • the flap leaf can for example consist of calcium silicate, for example a calcium silicate plate, or of metal. All areas of the surface of the valve blade that come into contact with the flowing medium are provided with the coating according to the invention.
  • the areas themselves that come into contact with the flowing medium or the applied coating can also offer additional protection against mechanical loads.
  • particles can be contained in the flowing medium which have an abrasive effect on areas of the shut-off device located within the housing. Either through the material of the areas that come into contact with the flowing medium itself or through a coating applied to the areas that come into contact with the flowing medium, the shut-off device can thus also be used, for example, in atmospheres with a high concentration of particles.
  • a two- or more-component epoxy resin coating can be provided as the coating.
  • Such a coating is suitable for use in very aggressive chemical media.
  • Such a two-component epoxy resin coating is available, for example, under the name Sikafloor®-381.
  • Sikafloor®-381 is available, for example, under the name Sikafloor®-381.
  • such a coating has good surface protection (mechanical strength) and hardens quickly.
  • the coating can be solvent-free in the cured state.
  • the coating can be reinforced with ceramic.
  • ceramic Such a two-component epoxy resin coating is available under the name LOCTITE® PC 7255 TM. Such a coating ensures good protection of surfaces even in very aggressive chemical media. Since the coating is reinforced with ceramic, the surface provided with the coating is not only well protected against corrosive substances, but also against abrasive substances.
  • the coating can be sprayable. Alternatively, the coating can be applied mechanically.
  • a primer is provided between the respective area and the coating.
  • Calcium silicate has a very uneven and rough surface. Calcium silicate also absorbs liquids strongly.
  • the surface of a calcium silicate plate for example, is closed at least to a large extent, preferably completely, so that the coating only needs to be applied in a small amount.
  • the primer improves the adhesion of the subsequently applied coating.
  • At least a partial area of the housing wall can be formed from at least one fire protection building board or at least one cement-bound calcium silicate board.
  • the thickness of the housing wall can preferably be between 10 mm and 80 mm be. If the housing has a square cross-section, the housing wall consists of four housing wall sections which are correspondingly fixed to one another. Each housing wall section can be formed, for example, from a fire protection board or a cement-bound calcium silicate board. Of course, other materials that are sufficiently temperature-resistant are also conceivable.
  • the flap leaf can be formed from at least one fire protection building board or a cement-bound calcium silicate board.
  • fire protection building board or a cement-bound calcium silicate board.
  • other materials that are sufficiently temperature-resistant are also conceivable.
  • the shut-off device can be designed as a smoke extraction flap.
  • Smoke control dampers are used to keep building areas in a building, for example an escape area, free of smoke.
  • the area of application of a smoke control damper is at a temperature between the ambient temperature of the building area to be kept smoke-free (cold smoke extraction) and a temperature of up to 1000 ° C or more (hot smoke extraction).
  • smoke control dampers must ensure a cold seal on the one hand and a warm seal on the other. Due to the possibly high temperatures, the housing, the flap, the stops and the encapsulation of the drive device arranged on the outside of the housing usually consist of calcium silicate.
  • Smoke control dampers are usually triggered by a smoke detector. Of course, other triggering devices, such as. B.
  • Smoke control dampers are designed in such a way that subsequent opening, ie pivoting into the open position, is guaranteed even after they have been triggered, ie after pivoting from the open position into the closed position. Of course, this also applies to the reverse case.
  • the shut-off device can also be designed as a fire damper.
  • Fire dampers usually have a housing made of metal or of calcium silicate plates, in which a damper blade made of calcium silicate is pivotably mounted.
  • a fire damper can be operated manually, for example.
  • an operating handle is provided.
  • the flap leaf can be fixed in its open position by means of a fixing device against a restoring force and can be pivoted from the fixed position, for example in the event of fire, into its closed position after the fixing device has been released by the restoring force.
  • the restoring force can be generated by a spring, preferably arranged outside the housing.
  • the fixing device is designed, for example, as a fusible link.
  • the flap leaf is fixed in its open position by means of the fixing device against a restoring force. For example in the event of a fire, i. H. if the temperature exceeds a value of about 72 ° C, the flap leaf is pivoted from its fixed open position after triggering the fixing device, for example the fusible link, by the restoring force provided by the spring from its open position to its closed position.
  • an intumescent material expands, i. H. a material that foams when exposed to heat.
  • the intumescent material now completely fills any gap that may still exist, for example between the housing and the valve leaf in its closed position.
  • the flap can no longer be opened and must be replaced later.
  • other configurations such as a thermoelectric triggering device, are also conceivable as fixing devices.
  • shut-off device can also be designed as a combined fire protection and smoke extraction flap.
  • a drive device acts directly or indirectly on the flap leaf. This allows the damper blade to be moved into the desired position by a motor.
  • the drive device is designed, for example, as a spring return motor.
  • a spring in the spring return motor is tensioned.
  • a thermoelectric release device which can be an electric fusible link, for example, causes a voltage interruption.
  • the spring return motor can thus no longer counteract the restoring force generated by the tensioned spring, so that the flap leaf is closed by the restoring force applied by the spring.
  • an OPEN / CLOSE drive can also be used as a drive device for opening and closing the damper blade.
  • the OPEN / CLOSE actuator provides a maximum torque of 40 Nm.
  • the limit switches for the OPEN and CLOSED position indicators are usually located inside the OPEN / CLOSE actuator.
  • the OPEN / CLOSE drive is controlled via a suitable interface monitoring unit with a control module.
  • the interface monitoring unit supplies the OPEN / CLOSE actuator with voltage and monitors whether the safety position has been reached. It also guarantees that the damper blade closes in the event of a voltage drop in a building.
  • the OPEN / CLOSE drive is controlled, for example, via a control module. If the control module includes double-layer capacitors, the double-layer capacitors provide a redundant 24 V voltage supply.
  • thermoelectric trigger element can be connected to an input of the control module in a fail-safe manner. In the event of a thermal release, the control module closes the damper blade. If the 24V power supply is interrupted, the damper blade is also closed by the energy of the double-layer capacitors.
  • the control module is preferably located within an encapsulation of the OPEN / CLOSE drive and is connected to a controller unit by means of two-wire technology, for example.
  • the controller unit consists of a controller including suitable control software and a suitable AS-Interface Power supply unit for communication with the control module.
  • the protocol that exchanges the data between the control module and the controller has been internationally standardized according to EN 50295 and IEC 62026-2 since 1999.
  • the data transmission and the power supply for the control of the OPEN / CLOSE drive take place, for example, via a two-wire line.
  • By evaluating the end positions in the OPEN / CLOSE drive both the position and the running time of the damper blade can be monitored.
  • the control module can also be used as a "stand-alone variant”. Then there is no communication with the controller.
  • the manual opening and closing of the damper blade takes place via an input contact on the control module.
  • a smoke extraction damper comprises a motorized drive device
  • a voltage is required both for pivoting the damper blade from the open position into its closed position and for pivoting the damper blade from the closed position into its open position.
  • At least one screw preferably extending through the pivot axis, can be provided.
  • a receptacle preferably a milled receptacle, can be provided in at least one surface of the valve leaf for receiving the end of the screw located in the area of this surface of the valve leaf.
  • At least one receptacle can be closed with a cover, preferably fastened to the flap leaf by means of screws.
  • the cover can be a calcium silicate plate, for example. With such a configuration, the coating also covers the cover.
  • the shut-off device can comprise an energy store.
  • This can be, for example, a battery or an accumulator.
  • the energy store can also be designed as a capacitor that is charged when a voltage is applied. If, for example, an electrically operated drive device is provided, the flap leaf can in this case be pivoted from the open position into its closed position or, conversely, from the closed position into its open position even in the event of a voltage interruption.
  • the figures show a shut-off device with a housing 2 having a circumferential housing wall 1.
  • the housing 2 has a square cross-sectional area.
  • the housing wall 1 thus consists of a total of four housing wall sections which are fixed to one another, for example by means of screws (not shown).
  • a flap leaf 5 is provided which is pivotably mounted about a pivot axis 3 in the direction of the arrow 4.
  • the pivot axis 3 is arranged centrally in relation to the flap leaf 5.
  • a seal (not shown) is provided between the flap leaf 5 and the housing wall 1.
  • the flap leaf 5 is fastened in a rotationally fixed manner with respect to the pivot axis 3.
  • the screw 16 extends through the pivot axis 3.
  • the shut-off device is designed as a fire damper.
  • Both the housing wall 1 of the housing 2 and the valve leaf 5 consist of calcium silicate plates.
  • shut-off device As will be explained below, all areas and components of the shut-off device which are in contact with the gaseous medium flowing in the housing 2 are protected against damaging chemical reactions and / or damaging corrosion by a coating 17.
  • the shut-off device is therefore also suitable for influencing the flow of chemically aggressive gaseous media and can be used in this respect, for example, in an exhaust air line of a laboratory or a laboratory fume cupboard.
  • a stop 7 is provided on the inside of the housing 2.
  • the stops 7 with their coating 17 applied on both sides are offset from one another and on opposite sides of the housing 2 by about the thickness of the flap leaf 5, which has the coating 17 on all sides, when viewed in the flow direction 6, and are arranged on the adjacent one by means of screws covered by the coating 17 Housing wall 1 attached.
  • Each stop 7 is approximately U-shaped and consists of a base section 8 which is arranged parallel to the pivot axis 3.
  • a side section 9 adjoins each of the two ends of each base section 8. The length of each side section 9 is coordinated such that the flap leaf 5 is aligned parallel to the flow direction 6 in the open position. In this position, the flap leaf 5 can touch all four free ends of the side sections 9. In such a configuration, the four ends of the side sections 9 define the open position of the flap leaf 5.
  • each stop 7 has a recess 10 on the side facing the flap leaf 5 in its closed position, which in the illustrated embodiment has a square cross-section.
  • Each recess 10 is formed by a protruding area 11 of the stop 7 and by the adjoining housing wall 1.
  • a seal 12 is provided which completely fills the recess 10 and which also protrudes from the recess 10 and thus protrudes from the stop 7.
  • Each recess 10 extends over the entire length of the base section 8 and the two side sections 9 of the relevant stop 7.
  • the areas of the seal 12 that come into contact with the flowing medium are also provided with the coating 17.
  • the flap leaf 5 rests against a stop 18 which is fastened to the housing wall 1 by means of screws that cannot be seen.
  • the surfaces of the stop 18 that come into contact with the flowing medium are also provided with the coating 17.
  • the coating 17 covers all surfaces of the areas / components of the shut-off device that are in contact with the medium flowing in the housing 2.
  • the inside of the housing wall 1 is also provided with the coating 17.
  • a recess 13 is provided in the partial area cooperating with the seal 12 in the closed position, which in the closed position of the flap leaf 5 completely accommodates the part of the seal 12 protruding from the stop 7 in the illustrated case.
  • the valve leaf 5 touches the projecting area 11 of the stop 7 in its closed position. If a gap remains between the projecting area 11 of the stop 7 and the valve leaf 5 in the closed position of the valve leaf 5, this is at least reduced to a minimum.
  • the recess 10 provided in the stop 7 and the recess 13 corresponding in the flap leaf 5 form a rectangular overall cross-sectional area.
  • the seal 12 is preferably full circumference, i. H. covered on all four sides with a non-combustible layer, in particular designed as a coated glass fabric.
  • This layer consists, for example, of a material that has a melting point of more than 1000 ° Celsius, preferably more than 1400 ° Celsius.
  • it can be a fleece made of alkaline earth silicate wool. This is a high temperature glass wool.
  • Fig. 1 It can be seen that in each of the four housing wall sections at least one mounting surface 14 produced by milling with at least one contact edge 15 is introduced.
  • the contact edge 15 allows optimal assembly and simple alignment of the stop 7 with respect to the flap leaf 5.
  • Fig. 2 shows an outside of the shut-off device. So a drive device 34 is provided on this outside, which by means of screws 19 on the Outside of the housing 2 is attached. The drive device 34 interacts with the pivot axis 3. In order to be able to recognize the position of the flap leaf 5 from the outside, a position indicator 20 is provided.
  • a module 21 is provided which is mounted on a bracket 23 fastened to the housing 2 by means of screws 22.
  • a square enclosure 24, which is fastened to the housing 2 with screws 25, is provided.
  • the encapsulation 24 consists of five calcium silicate plates and, together with the adjoining housing wall 1, forms a closed space in which the drive device 34 and the module 21 are arranged.
  • a thermal release element 26 with a detection area 32 is provided on the outside of the housing 2. As in Fig. 1 is shown, the detection area 32 extends through the housing wall 1 and to that extent protrudes into the housing 2.
  • the trigger element 26 is connected to the drive device 34 and the module 21 via a cable 33.
  • an inspection cover 27 is provided in each of two opposite housing wall sections of the housing 2 and is fastened to the respective housing wall section by means of screws 28.
  • Fig. 3 is the detail "Z" from Fig. 1 shown.
  • the flap leaf 5 has a continuous recess through which the pivot axis 3 is guided.
  • the screw 16 is provided for the rotationally fixed fixing of the flap leaf 5 with respect to the pivot axis 3.
  • a milling 35 is provided in both surfaces of the flap leaf 5 on both sides of the continuous recess through which the pivot axis 3 is guided.
  • One milling 35 is so deep that it receives a plate 36 and the head of the screw 16, while the opposite milling 35 receives a plate 29.
  • An internal thread into which the screw 16 is screwed is provided in the plate 29.
  • the plates 36, 29 are made of metal and serve to distribute forces.
  • Each milling 35 is covered with a cover 30, each cover 30 being fastened to the flap leaf 5 by means of screws 31.
  • Each cover 30 serves as thermal protection for the fastening located underneath in the form of the screw 16.
  • the covers 30 can for example consist of calcium silicate plates.
  • the coating 17 also extends over the covers 30, so that the flap leaf 5 is completely coated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air-Flow Control Members (AREA)
EP20165682.4A 2020-03-25 2020-03-25 Dispositif d'arrêt destiné à être utilisé dans une conduite d'air d'une installation technique de ventilation ou d'une installation de désenfumage mécanique Active EP3885666B9 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL20165682.4T PL3885666T3 (pl) 2020-03-25 2020-03-25 Urządzenie odcinające do zastosowania w przewodzie powietrznym instalacji wentylacyjnej lub mechanicznej instalacji oddymiającej
EP20165682.4A EP3885666B9 (fr) 2020-03-25 2020-03-25 Dispositif d'arrêt destiné à être utilisé dans une conduite d'air d'une installation technique de ventilation ou d'une installation de désenfumage mécanique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20165682.4A EP3885666B9 (fr) 2020-03-25 2020-03-25 Dispositif d'arrêt destiné à être utilisé dans une conduite d'air d'une installation technique de ventilation ou d'une installation de désenfumage mécanique

Publications (3)

Publication Number Publication Date
EP3885666A1 true EP3885666A1 (fr) 2021-09-29
EP3885666B1 EP3885666B1 (fr) 2024-05-01
EP3885666B9 EP3885666B9 (fr) 2024-07-10

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EP20165682.4A Active EP3885666B9 (fr) 2020-03-25 2020-03-25 Dispositif d'arrêt destiné à être utilisé dans une conduite d'air d'une installation technique de ventilation ou d'une installation de désenfumage mécanique

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EP (1) EP3885666B9 (fr)
PL (1) PL3885666T3 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH498996A (de) * 1969-03-22 1970-11-15 Deutsche Steinzeug Brandschutzanordnung
FR2153480A1 (en) * 1971-09-25 1973-05-04 Trox Gmbh Geb Fire break valves for ducts - combining use of pivoted gates and intumescent foams to seal the duct
FR2648891A1 (fr) * 1989-06-23 1990-12-28 Sari Clapet, notamment a usage de clapet coupe-feu ou de clapet de desenfumage
DE202015102532U1 (de) * 2015-05-18 2015-07-16 Trox Gmbh Absperrklappe für den Einsatz in einem Kanal einer raumlufttechnischen Anlage oder einer maschinellen Entrauchungsanlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH498996A (de) * 1969-03-22 1970-11-15 Deutsche Steinzeug Brandschutzanordnung
FR2153480A1 (en) * 1971-09-25 1973-05-04 Trox Gmbh Geb Fire break valves for ducts - combining use of pivoted gates and intumescent foams to seal the duct
FR2648891A1 (fr) * 1989-06-23 1990-12-28 Sari Clapet, notamment a usage de clapet coupe-feu ou de clapet de desenfumage
DE202015102532U1 (de) * 2015-05-18 2015-07-16 Trox Gmbh Absperrklappe für den Einsatz in einem Kanal einer raumlufttechnischen Anlage oder einer maschinellen Entrauchungsanlage

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Publication number Publication date
EP3885666B1 (fr) 2024-05-01
EP3885666B9 (fr) 2024-07-10
PL3885666T3 (pl) 2024-09-02

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