EP1913979A1 - Dispositif pour inertiser avec un générateur d'azote - Google Patents

Dispositif pour inertiser avec un générateur d'azote Download PDF

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Publication number
EP1913979A1
EP1913979A1 EP07117620A EP07117620A EP1913979A1 EP 1913979 A1 EP1913979 A1 EP 1913979A1 EP 07117620 A EP07117620 A EP 07117620A EP 07117620 A EP07117620 A EP 07117620A EP 1913979 A1 EP1913979 A1 EP 1913979A1
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EP
European Patent Office
Prior art keywords
inert gas
oxygen
supply pipe
inerting
pipe system
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EP07117620A
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German (de)
English (en)
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EP1913979B1 (fr
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Amrona AG
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Amrona AG
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Priority claimed from EP06122593A external-priority patent/EP1913978B1/fr
Application filed by Amrona AG filed Critical Amrona AG
Priority to EP07117620A priority Critical patent/EP1913979B1/fr
Priority to SI200730017T priority patent/SI1913979T1/sl
Priority to PL07117620T priority patent/PL1913979T3/pl
Publication of EP1913979A1 publication Critical patent/EP1913979A1/fr
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Publication of EP1913979B1 publication Critical patent/EP1913979B1/fr
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide

Definitions

  • the present invention relates to an inerting device for setting and maintaining predeterminable inertization levels in a protected space to be monitored, wherein the inerting device comprises a controllable inert gas system for providing inert gas, a first supply pipe system connected to the inert gas system, which is connectable to the protective space, around that provided by the inert gas system Inert gas supply to the shelter, and having a control unit which is adapted to control the inert gas system such that a certain specifiable inerting level is set and held in the shelter, the inert gas system having a compressed air source connected to a nitrogen generator to oxygen from the with the Compress compressed air source supplied compressed air and provide nitrogen-enriched air at a first output of the nitrogen generator, and wherein the nitrogen generator provided with Nitrogen-enriched air via the first output of the nitrogen generator can be supplied as an inert gas to the first supply pipe system.
  • the inerting device comprises a controllable inert gas system for providing inert gas, a first supply pipe
  • Such an inerting device is basically known from the prior art.
  • the German patent DE 198 11 851 C2 an inerting device for reducing the risk and extinguishing fires in enclosed spaces described.
  • the known system is designed, the oxygen content in an enclosed space (hereinafter "shelter” called) on a to reduce the level of pre-fixable ground inerting levels and, in the event of a fire, to further reduce the oxygen content rapidly to a certain level of full inertisation, thereby enabling effective extinguishment of a fire with the least possible storage capacity for inert gas cylinders.
  • the known device comprises an inert gas system which can be controlled by means of a control unit and also a feed pipe system connected to the inert gas system and the protective space, via which the inert gas provided by the inert gas system is supplied to the protective space.
  • an inert gas is either a steel cylinder battery in which the inert gas is stored compressed, a system for generating inert gases or a combination of both solutions in question.
  • inerting of the type mentioned is a facility to reduce the risk and extinguish fires in the protected area to be monitored, with a permanent inerting of the shelter for fire prevention and fire fighting is used.
  • the operation of the inerting device is based on the knowledge that in closed rooms the risk of fire can be counteracted by the fact that the oxygen concentration in the affected area is normally lowered permanently to a value of, for example, about 12% by volume. At this oxygen concentration, most flammable materials can no longer burn.
  • the main areas of use are in particular IT areas, electrical switch and distribution rooms, enclosed facilities as well as storage areas with high-quality assets.
  • the prevention or extinguishing effect resulting from the inertization process is based on the principle of oxygen displacement.
  • the normal ambient air is known to be 21% by volume of oxygen, 78% by volume of nitrogen and 1% by volume of other gases.
  • inert gas such as nitrogen.
  • a extinguishing effect starts when the oxygen content drops below 15% by volume.
  • further lowering of the oxygen content to, for example, 12 vol.% May be required.
  • the risk of fire in the shelter is also effectively reduced can be.
  • base inertization level generally refers to a reduced oxygen level in the room air of the shelter as compared to the oxygen level of the normal ambient air, although this reduced oxygen level does not in principle imply any endangerment to persons or animals from a medical point of view still be able to enter the shelter - under certain circumstances with certain precautionary measures.
  • the setting of a basic inertization level which, unlike the so-called “full inertization level”, does not have to correspond to such a reduced oxygen content at which effective fire extinguishment already occurs, primarily to reduce the risk of fire in the shelter to reduce.
  • the basic inerting level corresponds, depending on the circumstances of the individual case, to an oxygen content of, for example, 13% by volume to 15% by volume.
  • full inertization level is to be understood as meaning a further reduced oxygen content in comparison to the oxygen content of the basic inertization level, in which the flammability of most materials has already been reduced to such an extent that they can no longer be ignited.
  • the full inertization level is generally 11% by volume to 12% by volume oxygen concentration.
  • the reduced oxygen content in the room air of the protected room corresponding to the basic inerting level in principle does not endanger persons and animals so that they can enter the shelter at least for a short time without major complications, for example without respiratory protection, they are permanently inertized at a basic inerting level
  • Certain nationally prescribed safety measures must be taken into account, since in principle a stay in a reduced oxygen atmosphere can lead to an oxygen deficiency, which may have physiological effects on the human organism. These safety measures are specified in the respective national regulations and depend in particular on the amount of reduced oxygen content corresponding to the basic inerting level.
  • Table 1 below shows these effects on the human organism and the flammability of materials.
  • a shelter that would normally be at a basic inerting level of e.g. 13.8 to 14.5% by volume oxygen content in which, according to Table 1, an effective fire suppression can already be achieved, in the case of the inspection, for example for maintenance purposes, to a walkability level of e.g. Increase 15 to 17 vol .-% oxygen content.
  • the inert gas system should also produce or provide inert gas during the period of inspection of the protective space, so that the inert gas is supplied to the shelter in order to maintain the inerting level there (possibly with a certain control range) at the accessibility level.
  • the term "accessibility level” as used herein means a reduced oxygen content in the ambient air of the shelter as compared to the oxygen content of the normal ambient air, in which the respective national regulations for an inspection of the shelter are none or only slight require additional security measures.
  • the walkability level usually corresponds to an oxygen content in the room air that is higher than at a basic inerting level.
  • the present invention is based on the object of developing an inerting device of the type mentioned in such a way that it can be reliably ensured that the inerting level can be quickly raised to a walkability level in a permanently inertized shelter without the need for additional large-scale structural measures ,
  • the present invention has for its object to provide an inerting device of the type mentioned, with which a set in a protected space to be monitored inerting can be set and / or maintained in a reliable, the switching of the set in the shelter inerting, for example between a basic or full inertisation level and a level of accessibility, can be carried out as quickly as possible, without the need for major structural measures.
  • the inerting device further comprises a second supply pipe system connected to the inert gas system, which can be connected to the protective space, wherein the oxygen separated from the compressed air from the nitrogen generator oxygen-enriched air can be supplied to the second supply pipe system via a second outlet of the nitrogen generator in order to set and / or maintain a certain inerting level in the shelter.
  • the use of nitrogen generators in inerting devices is known per se.
  • the nitrogen generator is a system that can be used, for example, to generate nitrogen-enriched air from normal ambient air.
  • This is a gas separation system whose function is based, for example, on gas separation membranes.
  • the nitrogen generator is designed for the separation of oxygen from the ambient air.
  • a compressed air network or at least a compressor is required which produces the predetermined capacity for the nitrogen generator.
  • the principle of action of the nitrogen generator is based on the fact that in the membrane system provided in the nitrogen generator, the various components contained in the compressed air supplied to the nitrogen generator (oxygen, nitrogen, noble gases, etc.) diffuse at different speeds through hollow-fiber membranes in accordance with their molecular structure. Nitrogen with a low degree of diffusion penetrates the hollow-fiber membranes very slowly and accumulates in this way as it flows through the hollow fiber.
  • the general discovery is that different gases diffuse through materials at different rates.
  • the different diffusion rates of the main components of the air namely nitrogen, oxygen and water vapor, are used technically to produce a nitrogen stream or a nitrogen-enriched air.
  • a separation material is applied to the outer surfaces of hollow-fiber membranes, through which water vapor and oxygen diffuse very well. The nitrogen, however, has only a low diffusion rate for this separation material.
  • the PSA technology for example, in the nitrogen generator
  • different binding rates of the atmospheric oxygen and atmospheric nitrogen on specially treated activated carbon are utilized.
  • the structure of the activated carbon used is changed so that an extremely large surface with a large number of micro and submicropores (d ⁇ 1 nm) is present.
  • the oxygen molecules of the air diffuse into the pores much faster than the nitrogen molecules, so that the air in the vicinity of the activated carbon enriches with nitrogen.
  • the usually discharged into the ambient air exhaust air of the nitrogen generator which consist essentially of oxygen-enriched air used to adjust the oxygen concentration in the shelter with this exhaust air.
  • the lifting of a full or basic inertisation level set in the shelter can be converted to a walkability level within a very short time.
  • raising the full or basic inertization level set in the shelter to the walkability level by introducing the oxygen-enriched air it is possible to raise the oxygen content in the shelter by introducing a relatively small amount of gas.
  • the air exchange rate in the shelter should be kept at a low value. Namely, if not the oxygen-enriched air but, for example, "normal" ambient air, i. Air with an oxygen content of 21% by volume, which is used to increase the oxygen content in the shelter, requires a significantly higher amount of gas compared to the oxygen-enriched air.
  • the second supply pipe system discharges into the first supply pipe system and is thus connectable to the protection space via the first supply pipe system, so that this first supply pipe system is used solely to adjust or set a certain inertization level in the shelter . to keep.
  • the inerting device further includes a shutoff valve associated with the second supply pipe system and controllable via the control unit for interrupting by means of the second supply pipe system between the having second output of the nitrogen generator and the shelter space producible connection.
  • a controllable shut-off valve for example, a corresponding controllable control valve or the like in question.
  • the inerting system further comprises a pressure storage tank for storing the oxygen-enriched air provided by the nitrogen generator, the control unit being adapted to associate with a so-called “oxygen pressure storage tank” and with the second one Supply pipe connected drive controllable pressure reducer in such a way to adjust or maintain a certain inerting in the shelter.
  • a pressure-dependent valve device is furthermore provided, which is open in a first predeterminable pressure range and allows the oxygen pressure-accumulator container to be filled with the oxygen-enriched air provided by the nitrogen generator.
  • the inerting device furthermore has at least one shut-off valve which is assigned to the first supply pipe system and can be actuated via the control unit for interrupting the connection which can be produced by means of the first supply pipe system between the first outlet of the nitrogen generator and the protective space.
  • the control unit for interrupting the connection which can be produced by means of the first supply pipe system between the first outlet of the nitrogen generator and the protective space.
  • At least one oxygen detection device is provided for detecting the oxygen content in the room air of the protection space, the control unit being designed to control the amount of inert gas to be supplied to the protection space and / or or to adjust the oxygen concentration of the inert gas as a function of the measured in the room air of the shelter oxygen content, thus basically only the actually required to set or hold a certain inerting required in the shelter inert gas to the shelter.
  • the provision of such an oxygen detection device ensures that the inerting levels to be set in the protective space can be set and maintained as accurately as possible by supplying a suitable inert gas quantity and / or a suitable fresh air or oxygen quantity.
  • the oxygen detection device continuously or at predeterminable times emits a corresponding signal to the corresponding control unit, as a result of which the inert gas system is correspondingly activated in order always to supply the protective space with the inertization level necessary for maintaining the inertization level set in the protection space.
  • the term "holding the oxygen content at a certain inertization level” as used herein means maintaining the oxygen content at the inertization level with a certain control range, the control range preferably being a function of the Type of shelter (for example, depending on an applicable for the shelter air exchange rate or depending on the materials stored in the shelter) and / or depending on the type of inerting system used for use.
  • a control range is ⁇ 0.2 vol%.
  • other control range sizes are also conceivable.
  • an aspirative device offers itself here.
  • the room air in the protected space to be monitored is constantly taken representative air samples and fed to an oxygen detector, which emits a corresponding detection signal to the corresponding control unit.
  • the control unit being designed to control, for example, the air conveyor rate of the ambient air compressor such that the amount of inert gas supplied to the protective room by the inert gas system and / or the Oxygen concentration in the inert gas can be set to the appropriate value for setting and / or holding the first predetermined inerting.
  • This preferred solution with regard to the inert gas system is characterized in particular by the fact that the inert gas system can generate the inert gas in situ, which eliminates the need, for example, to provide a pressure-cell battery in which the inert gas is stored in a compressed form.
  • the inert gas system also has an inert gas pressure storage container, wherein the control unit should be designed to control a controllable pressure reducer associated with the inert gas pressure storage container and connected to the first supply pipe system, in order to supply the inert gas system provided by the inert gas system Set amount of inert gas to be supplied to the shelter space and / or the oxygen concentration in the inert gas to the value suitable for setting and / or maintaining the predeterminable inertization.
  • the inert gas pressure storage container may be provided in combination with the aforementioned ambient air compressor and / or inert gas generator or else alone.
  • the inerting device further comprises a pressure-dependent valve device which opens in a first prescribable pressure range, for example between 1 and 4 bar is and a filling of the inert gas pressure storage tank with the inert gas system allowed.
  • the solution according to the invention is not limited to setting or maintaining the accessibility level in the shelter. Rather, the claimed inerting device is designed such that the predeterminable inerting level can be a Vollinertmaschinesforementioned, a Grundinertmaschinesclude or a walkability level.
  • the inert gas system further comprises a bypass pipe system preferably connectable with the control unit via a shut-off valve which is connected on the one hand to a compressed air source and on the other hand to the first supply pipe system Compressed air source supplied compressed air to the shelter as fresh air, and thus to adjust the oxygen concentration in the shelter at a level which corresponds to be set in the shelter and / or held certain inerting.
  • a bypass pipe system preferably connectable with the control unit via a shut-off valve which is connected on the one hand to a compressed air source and on the other hand to the first supply pipe system Compressed air source supplied compressed air to the shelter as fresh air, and thus to adjust the oxygen concentration in the shelter at a level which corresponds to be set in the shelter and / or held certain inerting.
  • the protective space supplied inert gas and the oxygen concentration in the inert gas can be controlled in the inert gas system to the necessary for setting or holding the predetermined inerting in the shelter value, the inert gas system the controllable inert gas system, which is connected to the control unit via a shut-off valve bypass pipe system which is connected on the one hand to a compressed air source and on the other hand to the first supply pipe system, and the supply pipe system.
  • the inert gas system has the function of providing both (ideally pure) inert gas and fresh air, so that the supply pipe system, which connects the inert gas system with the shelter, for the supply of pure inert gas, pure fresh air or a mixture thereof is used.
  • compressed air compressed air compressed air is to be understood in the broadest sense.
  • compressed air but also compressed and oxygen-enriched air to be understood.
  • the compressed air can either be stored in appropriate pressure vessels or generated locally with suitable compressor equipment.
  • compressed air for example, fresh air is to be understood, is introduced by means of a suitable blower in the bypass pipe system. Since the introduced with a blower in the bypass pipe system air also has a higher pressure compared to the normal ambient air, so there is compressed air or compressed air.
  • the amount of inert gas supplied by the inert gas system and / or the oxygen concentration in the inert gas can be controlled on the one hand by a corresponding control of the inert gas system, with which the absolute amount of inert gas provided per unit time is controlled on the other hand by a corresponding control of the bypass pipe system associated with the shut-off valve, whereby the absolute, the protection space per unit time supplied fresh air amount is set.
  • the compressed-air source has a pressure storage container for storing oxygen, oxygen-enriched air or compressed air
  • the control unit is designed to control a controllable pressure reducer associated with the pressure storage container and connected to the first supply pipe system, to set or maintain a certain inerting level in the shelter.
  • the pressure storage container can be provided either as a compressed air source itself or as a separate unit in addition to the compressed air source in the inerting.
  • the accumulator tank is in an advantageous manner in fluid communication with the via the shut-off valve switchable bypass pipe system.
  • FIG. 1 schematically shows a first preferred embodiment of the inerting device 1 according to the invention for setting and maintaining predefinable inertization levels in a protected space 2 to be monitored.
  • the inerting device 1 consists of an inert gas system, which in the illustrated embodiment has an ambient air compressor 10 and an inert gas or nitrogen generator 11 connected thereto.
  • a control unit 12 is provided, which is designed to turn on / off via corresponding control signals the ambient air compressor 10 and / or the nitrogen generator 11. In this way, by means of the control unit 12 in the shelter 2, a predetermined inerting level can be set and maintained.
  • the inert gas generated by the inert gas system 10, 11 is supplied via a feed pipe system 20 ("first supply pipe system") to the protected space 2 to be monitored; Of course, however, several shelters may be connected to the supply pipe system 20.
  • first supply pipe system the supply of the inert gas provided with the inert gas system 10, 11 via corresponding outlet nozzles 51, which are arranged at a suitable location in the shelter 2.
  • the inert gas advantageously nitrogen
  • the inert gas generator or nitrogen generator 11 functions, for example, according to the known from the prior art membrane or PSA technology to produce nitrogen-enriched air with, for example, 90 vol .-% to 95 vol .-% nitrogen content.
  • this nitrogen-enriched air serves as an inert gas, which is supplied to the shelter 2 via the supply pipe system 20.
  • the nitrogen generator 11 has an (not explicitly shown) air separation system to separate oxygen from the compressed air supplied with the compressed air source 10 compressed air and nitrogen-enriched air at a first output 11a of the nitrogen generator 11.
  • the nitrogen generator 11 provided by nitrogen and enriched Air via the first output 11a of the nitrogen generator 11 can be supplied as an inert gas to the first supply pipe system 20.
  • the inerting device 11 further has a second supply pipe system 30 connected to the inert gas system 10, 11, which can be connected to the protective space 2 via a shut-off valve 31 which can be activated by the control unit 12, the oxygen separated from the compressed air by the nitrogen generator 11 being oxygen-enriched air via a second output 11b of the nitrogen generator 11 to the second supply pipe system 30 can be supplied.
  • the second supply pipe system 30 opens in the first supply pipe system 20 and is therefore connectable to the shelter 2 via the first supply pipe system 20.
  • control unit 12 depending on an example entered by the user in the control unit 12 inerting the inert gas system 10, 11 so controlled that the predetermined inerting is set and maintained in the shelter 2.
  • the selection of the desired inerting levels on the control unit 12 can be carried out, for example, with a key switch or password-protected on a (not explicitly shown) control panel.
  • the selection of the inertization level takes place according to a predetermined sequence of events.
  • the basic inerting level is selected at the control unit 12, which was determined in advance taking into account the characteristic values of the protection space 2, and if no inertization level has been set in the selection of the basic inertization level in the protection space 2, ie if there is a gas atmosphere in the protection space, which is substantially identical to the chemical composition of the ambient air
  • a shut-off valve 21 associated with the supply pipe system 20 is connected to the control unit 12 for direct forwarding of the inert gas provided by the inert gas system 10, 11 in the shelter 2.
  • the oxygen content in the protective space 2 is preferably continuously measured with the aid of an oxygen detection device 50.
  • the oxygen sensing device 50 communicates with the control unit 12 so that the Control unit 12 basically has knowledge of the oxygen content set in the shelter 2.
  • the control unit 12 If it is determined by measurement of the oxygen content in the shelter 2 that the Grundinertmaschinesmat was reached in the shelter 2, the control unit 12 outputs a corresponding signal to the inert gas system 10, 11 and / or to the shut-off valve 21 to turn off the further supply of inert gas. In the course of time, inert gas escapes through certain leaks, so that the oxygen concentration in the indoor air atmosphere increases. When the inertization level has moved away from the set point by more than a predetermined amount, the control unit 12 sends a corresponding signal to the inert gas system 10, 11 and / or to the shut-off valve 21 to reactivate the supply of inert gas.
  • FIG. 2 shows a schematic view of a second preferred embodiment of the inertization device 1 according to the invention.
  • the system shown in FIG. 2 differs from the embodiment according to FIG. 1 in that additionally an accumulator tank 32 is provided for storing the oxygen generator 11 provided by the nitrogen generator 11 enriched air is provided, wherein the control unit 12 is adapted to control a the oxygen pressure accumulator tank 32 associated and connected to the second supply pipe system 30 controllable pressure reducer 33 so as to provide the supplied from the inert gas system 10, 11 amount of inert gas to be supplied to the shelter 2 / / or to set the oxygen concentration in the inert gas at the value suitable for setting and / or maintaining the determined inertization level.
  • a pressure-dependent valve device 34 is provided, which is open in a first predeterminable pressure range and allows a filling of the oxygen pressure storage container 32 with the nitrogen generator 11 provided and oxygen-enriched air.
  • the inerting device 1 has an accumulator tank 22, which serves to store, if necessary, the nitrogen-enriched air provided by the nitrogen generator 11.
  • the control unit 12 is designed to correspondingly control a valve system 23, 24 associated with the pressure accumulator tank 22 and connected to the first supply pipe system 20 via the controllable three-way valve 21 in order to connect the pressure accumulator tank 22 to the first supply pipe system 20 as needed, so that the provided in the accumulator tank 22 and with Nitrogen-enriched air can be supplied to the shelter 2.
  • the controller 12 and the valve system 23, 24 should be designed so that from the accumulator tank 22, a sufficient amount of nitrogen-enriched air can be supplied to the shelter to hold or set in the shelter 2, the certain inerting.
  • the pressure accumulator tank 22 associated valve system 23, 24 includes a pressure-dependent valve device 24 which is open in a first predetermined pressure range and allows filling of the pressure storage container 22 with the nitrogen generator 11 provided and enriched with nitrogen air. Furthermore, the valve system has a controllable by the control three-way valve 24. This three-way valve 24, together with the three-way valve 21, allows an outlet pipe system connected to the outside atmosphere, the accumulator tank 22, and the first supply pipe system 20 to be connected to each other as necessary
  • FIG 3 shows a schematic view of a further embodiment of the inerting device 1 according to the invention.
  • a bypass pipe system 40 and, on the other hand, a second supply pipe system 30 are provided between the second exit 11b of the nitrogen generator 11 and the first supply pipe system 20.
  • the bypass pipe system 40 connects the output of the compressed air source 10 to the supply pipe system 20.
  • the supply pipe 20 and thus the shelter 2 directly supplied from the compressed air source 10 compressed air can be supplied as fresh air as needed.
  • a direct supply of fresh air in the protection space 2 may be required if the inertization level set in the protection space 2 corresponds to an oxygen concentration which is lower than the oxygen concentration of an inertization level to be set in the protection space 2.
  • the amount of inert gas to be supplied to the protective space and / or the concentration of inert gas in the inert gas can be provided for setting and / or maintaining a certain inertization level supplied via one and the same feed pipe system 20 of this provided by the inert gas system inert gas.
  • the nitrogen generator 11 may comprise, for example, a cascade of single-membrane units, the number of individual-membrane units being selectable for separating oxygen from that supplied to the compressed-air source 10 via the control unit 12 Compressed air and for providing the nitrogen-enriched air at the first exit 11a of the nitrogen generator 11, the degree of nitrogen enrichment in the nitrogen-enriched air provided by the nitrogen generator 11 being controlled in response to the number of single-membrane units selected via the control unit 12 can.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
EP07117620A 2006-10-19 2007-10-01 Dispositif pour inertiser avec un générateur d'azote Active EP1913979B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07117620A EP1913979B1 (fr) 2006-10-19 2007-10-01 Dispositif pour inertiser avec un générateur d'azote
SI200730017T SI1913979T1 (sl) 2006-10-19 2007-10-01 Inertizacijski sistem z generatorjem dušika
PL07117620T PL1913979T3 (pl) 2006-10-19 2007-10-01 Urządzenie inertyzujące z wytwornicą azotu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06122593A EP1913978B1 (fr) 2006-10-19 2006-10-19 Dispositif pour inertiser avec un générateur d'azote
EP07117620A EP1913979B1 (fr) 2006-10-19 2007-10-01 Dispositif pour inertiser avec un générateur d'azote

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EP1913979A1 true EP1913979A1 (fr) 2008-04-23
EP1913979B1 EP1913979B1 (fr) 2009-01-14

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PL (1) PL1913979T3 (fr)
SI (1) SI1913979T1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8567936B2 (en) 2010-11-10 2013-10-29 Electronics For Imaging, Inc. LED roll to roll drum printer systems, structures and methods
US9487010B2 (en) 2010-12-15 2016-11-08 Electronics For Imaging, Inc. InkJet printer with controlled oxygen levels
US9527307B2 (en) 2010-12-15 2016-12-27 Electronics For Imaging, Inc. Oxygen inhibition for print-head reliability
US10195874B2 (en) 2009-04-14 2019-02-05 Electronics For Imaging, Inc. Inert UV inkjet printing having dual curing modes for ultraviolet-curable ink
EP3626327A1 (fr) * 2018-09-19 2020-03-25 Wagner Group GmbH Procédé d'inertisation et installation d'inertisation, en particulier destinés à la prévention des incendies
CN112797542A (zh) * 2021-01-04 2021-05-14 珠海格力电器股份有限公司 灭火装置、控制方法及空调器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249126A1 (de) * 2002-10-22 2004-06-09 Minimax Gmbh Verfahren und Anlage zum Erzeugen einer sauerstoffarmen Atmosphäre
EP1683548A1 (fr) * 2005-01-21 2006-07-26 Amrona AG Procédé d'inertisation pour éviter des incendies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249126A1 (de) * 2002-10-22 2004-06-09 Minimax Gmbh Verfahren und Anlage zum Erzeugen einer sauerstoffarmen Atmosphäre
EP1683548A1 (fr) * 2005-01-21 2006-07-26 Amrona AG Procédé d'inertisation pour éviter des incendies

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10195874B2 (en) 2009-04-14 2019-02-05 Electronics For Imaging, Inc. Inert UV inkjet printing having dual curing modes for ultraviolet-curable ink
US8567936B2 (en) 2010-11-10 2013-10-29 Electronics For Imaging, Inc. LED roll to roll drum printer systems, structures and methods
US9487010B2 (en) 2010-12-15 2016-11-08 Electronics For Imaging, Inc. InkJet printer with controlled oxygen levels
US9527307B2 (en) 2010-12-15 2016-12-27 Electronics For Imaging, Inc. Oxygen inhibition for print-head reliability
US10668742B2 (en) 2010-12-15 2020-06-02 Electronics For Imaging, Inc. Oxygen inhibition for print-head reliability
EP3626327A1 (fr) * 2018-09-19 2020-03-25 Wagner Group GmbH Procédé d'inertisation et installation d'inertisation, en particulier destinés à la prévention des incendies
WO2020058227A1 (fr) * 2018-09-19 2020-03-26 Wagner Group Gmbh Procédé d'inertage et installation d'inertage, en particulier pour la prévention des incendies
CN112797542A (zh) * 2021-01-04 2021-05-14 珠海格力电器股份有限公司 灭火装置、控制方法及空调器
CN112797542B (zh) * 2021-01-04 2022-12-02 珠海格力电器股份有限公司 灭火装置、控制方法及空调器

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SI1913979T1 (sl) 2009-06-30
PL1913979T3 (pl) 2009-06-30

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