EP3782704A1 - Dispositif de déclenchement thermique permettant de déclencher la fermeture automatique d'un clapet de protection contre l'incendie dans un canal d'air - Google Patents

Dispositif de déclenchement thermique permettant de déclencher la fermeture automatique d'un clapet de protection contre l'incendie dans un canal d'air Download PDF

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Publication number
EP3782704A1
EP3782704A1 EP20189921.8A EP20189921A EP3782704A1 EP 3782704 A1 EP3782704 A1 EP 3782704A1 EP 20189921 A EP20189921 A EP 20189921A EP 3782704 A1 EP3782704 A1 EP 3782704A1
Authority
EP
European Patent Office
Prior art keywords
release device
control unit
thermal release
duct
housing
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
EP20189921.8A
Other languages
German (de)
English (en)
Other versions
EP3782704B1 (fr
Inventor
Lukas Buehler
Adrien Chassot
Marco Marder
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.)
Siemens Schweiz AG
Original Assignee
Siemens Schweiz AG
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 Siemens Schweiz AG filed Critical Siemens Schweiz AG
Publication of EP3782704A1 publication Critical patent/EP3782704A1/fr
Application granted granted Critical
Publication of EP3782704B1 publication Critical patent/EP3782704B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A62C2/247—Operating or controlling mechanisms having non-mechanical actuators electric
    • 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

Definitions

  • the invention relates to a thermal triggering device for triggering an automatic closing of a fire damper in an air duct.
  • an air duct is intended, for example, for air conditioning a building or for extracting smoke from a building in the event of a fire.
  • the fire damper can be closed by means of an actuator when a predeterminable duct air temperature limit value is exceeded inside the air duct.
  • the duct air temperature limit value is in particular in a temperature range from 65 ° C to 120 ° C, preferably in a range from 72 ° C to 95 ° C.
  • Such an actuator is also referred to as a fire damper drive.
  • thermal release devices have the following disadvantages:
  • a thermal release device implemented as a fuse, a so-called thermal fuse, has the property that it interrupts the power supply of the actuator at a predetermined limit temperature.
  • Such a thermal fuse cannot be reset.
  • two such thermal fuses are connected in series, the first thermal fuse then being placed inside the air duct and the second thermal fuse in the vicinity outside the air duct. If one of the thermal fuses reaches its respective limit temperature, the power supply to the actuator is interrupted or, in other words, the safety loop is opened.
  • the thermal release device considered here is designed to be attached to the air duct and is set up to interrupt a release line of the actuator that is looped through the thermal release device.
  • the trigger line fulfills the function of a safety loop.
  • the power supply to the actuator is interrupted by the release device.
  • the thermal triggering device can include an electronic control unit, a first temperature sensor connected to the control unit for, in particular, continuous detection of a duct air temperature value inside the air duct, a second temperature sensor connected to the control unit for in particular continuous detection of an ambient air temperature value outside the air duct, and an electrical one connected downstream of the control unit
  • a first temperature sensor connected to the control unit for, in particular, continuous detection of a duct air temperature value inside the air duct
  • a second temperature sensor connected to the control unit for in particular continuous detection of an ambient air temperature value outside the air duct
  • an electrical one connected downstream of the control unit
  • the electrically controllable switching element for interrupting the power supply of the actuator is in particular a transistor, in particular a switching transistor, preferably a MOSFET, a monostable or bistable relay.
  • the first and second temperature sensors are consequently not a temperature switch, as is the case with thermal fuses or bimetal switches in the prior art. Rather, it is designed to provide an electrical resistance value assigned to the detected temperature.
  • the temperature sensor can be a digital temperature sensor that outputs a digital value assigned to the detected temperature as an electrical signal.
  • the housing is preferably made of a temperature-resistant plastic, i.e. made of a plastic that is mechanically stable for temperatures up to 150 ° C.
  • the circuit carrier is preferably a printed circuit board, such as a printed circuit board made of an FR4 material.
  • the housing has a sensor opening for leading the first circuit carrier section out of the housing.
  • a structurally particularly simple construction of a thermal release device is advantageously possible.
  • a quick response of the first temperature sensor to temperature changes in the air duct is ensured.
  • the sensor opening can, for example, be sealed with an adhesive or silicone after the circuit carrier has been inserted in the housing to prevent dirt from entering.
  • the electronic control unit is a microcontroller.
  • the microcontroller is arranged on the second circuit carrier section.
  • the microcontroller is thus in the correct state Attachment of the triggering device to the air duct on the second circuit carrier section lying outside the air duct.
  • the second temperature sensor is (already) integrated in the microcontroller, preferably on the chip, the so-called "die" of the microcontroller.
  • the microcontroller is programmed, in particular to continuously record an ambient air temperature value.
  • the microcontroller is a processor-based electronic processing unit. Suitable program steps that can be executed by the microcontroller or its processor are loaded or loadable on the microcontroller.
  • the microcontroller has a preferably non-volatile electronic memory, such as a flash memory, in which the executable program routines are stored.
  • the microcontroller typically has at least one of the following integrated hardware functional units: analog / digital converter, digital / analog converter, digital input / output unit, serial bus interface, timer, Signal processor, watch dog and temperature sensor.
  • the particular advantage here is that there is no need for a separate temperature sensor as a component for detecting the ambient temperature. This simplifies the circuit structure of the thermal release device according to the invention.
  • the release mechanism can e.g. be snapped or locked into an opening in the air duct.
  • the opening is preferably slot-shaped or rectangular. In its longitudinal extension it has a dimension in the range from 3 cm to 10 cm, preferably in the range from 4 cm to 7 cm.
  • the transverse dimension of the opening can be in the range from 1 cm to 4 cm, preferably in the range from 2 cm to 3 cm.
  • two external, opposing snap elements are arranged or formed on the housing.
  • the snap elements are designed in such a way that, when the thermal release device is pushed into a geometrically matched slot-shaped opening in the air duct, they latch with the slot-shaped opening.
  • the two snap elements are arranged or molded in such a way that they latch with the inner edges of the slot-shaped opening which are furthest apart from one another. This makes a particularly simple and at the same time mechanical stable fastening of the release device according to the invention on the air duct, ie on a wall of the air duct, is possible.
  • the thermal triggering device has a manually operable switch that is electrically connected to the control unit, in particular a button.
  • the binary switching state of the switch can then be read in by means of the control unit.
  • the switch can be manually operated by a user from the outside of the housing of the thermal release device.
  • the electronic control unit can be set up or programmed to close the switching element again to restore the power supply to the actuator when the thermal release device is triggered, i.e. after the switching element has been closed and the switch has been actuated. This enables the thermal release device to be reset in a particularly simple manner.
  • the electronic control unit can be set up to openly control the switching element for interrupting the power supply of the actuator when the thermal release device is not released and after the switch has been actuated.
  • the electronic control unit can additionally be set up to control the switching element again to close after a further actuation of the switch. This makes it possible to test the functionality of the thermal release device in a simple manner.
  • the trigger device has an optical display element, in particular an LED.
  • the optical display element can be controlled at least indirectly by the electronic control unit.
  • the electronic control unit is set up or programmed to control the optical display element in the triggered state of the thermal triggering device in a continuously lit or flashing manner.
  • the electronic control unit can be set up to control the optical display element in a permanently lit state in the non-triggered state. This enables a direct status output on the thermal release device.
  • the thermal release device has a modulator and / or demodulator (modulator / demodulator) that acts electrically on the release line.
  • the modulator and / or demodulator is or are signal-connected to the electronic control unit.
  • the modulator and the demodulator can be separate structural units or a combined structural unit.
  • the modulator can be set up to couple electrical signals into the trigger line in a modulating manner in an inductive, capacitive or ohmic manner, e.g. in the sense of a powerline modem.
  • the demodulator can be set up to couple and demodulate electrical signals from the trigger line in an inductive, capacitive or ohmic manner.
  • the electronic control unit can be set up or programmed to send a current duct air temperature value and / or current ambient air temperature value and / or possibly the switching state of the switch connected to the electronic control unit as data, ie in the form of a digital sequence, to the modulator using signals or data to output this data to the tripping line for modulating this data.
  • an actuator set up to receive these modulated data and connected to the thermal release device according to the invention via the release line can forward these data to a higher-level control device via a network connection, e.g. for further possible evaluation.
  • an actuator that is set up to receive this data via a network connection from a higher-level control device can forward this data by modulation via the trigger line to the connected thermal triggering device according to the invention for possible further processing by the electronic control unit of the triggering device.
  • the electronic control unit is set up or programmed to change the duct air temperature limit value stored in the electronic control unit or in a connected external memory and / or the ambient air temperature limit value and / or the minimum temperature rise rate of the first and / or second temperature sensor, in each case by the updated duct air temperature limit value, by the updated one To replace ambient air temperature limit value and / or by the updated minimum temperature rise rate of the first and / or second temperature sensor.
  • a changed parameterization of the thermal release device according to the invention is thereby advantageously possible.
  • the electronic control unit of the thermal release device can be set up to generate a time sequence of actuation phases (button pressed) and non-actuation phases (switch released) entered via the manually operated switch, which includes an actuator parameter from a large number of possible actuator parameters encoded, received and identified as such.
  • the electronic control unit can also be set up to output this actuator parameter to a modulator which acts electrically on the trigger line and which is connected to the electronic control unit for signaling purposes.
  • An actuator parameter can be, for example, a parameter for the maximum actuator torque, for the actuating angle range, for the maximum motor speed of the actuator and the like.
  • the electronic control unit can also be set up to acknowledge a respective entered time sequence in a suitable manner by activating the optical display unit.
  • FIG 1 shows a known thermal release device 10 with two series-connected thermal fuses 6, 7 for interrupting the power supply of an actuator 1.
  • the reference numeral 8 denotes a release line that connects the release device 10 to the actuator 1 via its electrical connection 3 in the form of a cable .
  • V IN An input voltage applied there is designated by V IN.
  • the actuator 1 acts in a known manner on a fire damper 4 in an air duct 5 in order to automatically close it after it has been triggered.
  • ⁇ with a case ambient air temperature is designated outside the air channel 5 and ⁇ i is a channel air temperature in the interior of the air passage 5 shown.
  • FIG 3 shows an exemplary embodiment of the thermal release device 10 with a data transmission option to the actuator 1 according to the invention.
  • the triggering device 10 has a modulator / demodulator M / D in order to transmit data DAT, which are stored in the control unit 10 or can be read in externally by this, by means of modulation by the modulator of the modulator / demodulator M / D and via the triggering line 8 to the Actuator 1 to transfer.
  • the data DAT in the return line RL to the electric motor M are modulated.
  • the actuator 1 has a demodulation unit symbolized by a diode and a capacitor.
  • FIG 4 shows a sectional view through an exemplary thermal release device 10 according to the invention transversely to the direction of flow in an air duct 5
  • the release device 10 has a housing 12, which encloses a circuit carrier 11 (see also FIG 5 ).
  • Two snap elements 18 are molded into the housing 12, so that in the properly pushed-in state of the thermal release device 10, the housing 12 can lock in a mechanically stable manner with a geometrically coordinated slot-shaped opening SL in a wall of the air duct 5.
  • a first temperature sensor 16, in particular a PT1000 is applied to the shown “lower” section 19-1 of the circuit carrier 11. This circuit carrier section 19 protrudes from an opening OF in the housing 12 and is thus directly surrounded by the duct air in the air duct 5.
  • a housing width is denoted by B, but without the cable grommet KT shown.
  • the housing width B is preferably in the range from 4 to 8 cm.
  • FIG 5 shows a sectional view through the thermal release device 10 according to FIG FIG 4 along the in FIG 4 line of sight V.
  • L denotes a housing length
  • T denotes a housing depth.
  • the housing length L is preferably in the range 8 to 15 cm.
  • the housing depth T is preferably in the range from 1.5 to 4 cm.
  • a sensor length labeled SL describes the length of the circuit carrier section 19 led out of the housing 12 with the first temperature sensor 16 applied thereon.
  • the sensor length SL is in particular in the range from 0.2 to 5 cm, preferably in the range from 0.3 to 1.5 cm.
  • the light-emitting diode LED shines through a transparent window in the housing 12.
  • the button 15 can be operated manually from the outside of the housing 12.
  • the entire housing 12 preferably encloses the circuit carrier 11 in a dust-tight and moisture-tight manner, in particular hermetically sealed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air Conditioning Control Device (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP20189921.8A 2019-08-23 2020-08-06 Dispositif de déclenchement thermique permettant de déclencher la fermeture automatique d'un clapet de protection contre l'incendie dans un canal d'air Active EP3782704B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019212684 2019-08-23

Publications (2)

Publication Number Publication Date
EP3782704A1 true EP3782704A1 (fr) 2021-02-24
EP3782704B1 EP3782704B1 (fr) 2022-02-23

Family

ID=71994421

Family Applications (1)

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EP20189921.8A Active EP3782704B1 (fr) 2019-08-23 2020-08-06 Dispositif de déclenchement thermique permettant de déclencher la fermeture automatique d'un clapet de protection contre l'incendie dans un canal d'air

Country Status (2)

Country Link
EP (1) EP3782704B1 (fr)
DK (1) DK3782704T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4011458A1 (fr) * 2020-12-09 2022-06-15 Siemens Schweiz AG Dispositif de déclenchement thermique destiné à la fermeture automatique d'un volet de protection contre l'incendie en fonction d'un signal de déclenchement ou de signal de non déclenchement
US12580455B2 (en) 2020-11-04 2026-03-17 Discovery Energy, Llc Generator enclosure with fire damper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2403608A1 (fr) * 2009-03-02 2012-01-11 Belimo Holding AG Entraînement pour clapet de protection anti-feu
EP3104518A1 (fr) * 2015-06-10 2016-12-14 Belimo Holding AG Circuit de commande pour un entrainement de securite

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2403608A1 (fr) * 2009-03-02 2012-01-11 Belimo Holding AG Entraînement pour clapet de protection anti-feu
EP3104518A1 (fr) * 2015-06-10 2016-12-14 Belimo Holding AG Circuit de commande pour un entrainement de securite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12580455B2 (en) 2020-11-04 2026-03-17 Discovery Energy, Llc Generator enclosure with fire damper
EP4011458A1 (fr) * 2020-12-09 2022-06-15 Siemens Schweiz AG Dispositif de déclenchement thermique destiné à la fermeture automatique d'un volet de protection contre l'incendie en fonction d'un signal de déclenchement ou de signal de non déclenchement

Also Published As

Publication number Publication date
DK3782704T3 (da) 2022-05-09
EP3782704B1 (fr) 2022-02-23

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