Abstract: The invention relates to an inerting system as well as an inerting method for reducing oxygen in which an oxygen content which is predefinable and reduced in comparison to normal ambient air is set and maintained in the spatial atmosphere of an enclosed room (2). To this end, the inerting system (1) comprises a compressor system (3) for compressing an initial gas mixture as well as a gas separation system (10) connected to the compressor system (3). At least a portion of the oxygen contained within the compressed initial gas mixture is separated in the gas separation system (10). The gas separation system (10) is designed to be selectively operated in either a VPSA mode or a PSA mode.

Abstract: A camshaft adjuster arrangement (2) having a camshaft (4) and a rotor (6) for a camshaft adjuster. The rotor (6) has a central bore (8) for a fixing element (14), the rotor being mounted on the camshaft (4) in a rotationally fixed manner by the fixing element (14). The mounting of the camshaft adjuster arrangement (2) is simplified by forming a frictional connection between the camshaft (4) and the rotor (6) using a clamping unit (16).

Abstract: The invention relates to a preventing and extinguishing fires in enclosed spaces in which the internal air atmosphere is not permitted to exceed a predefined temperature value. In order not to have to increase the cooling capacity of an air conditioning system when inert gas is added to the internal air atmosphere to set or maintain a specific inertization level within an enclosed space, a system for the regulated discharging of inert gas into same is provided. The system includes a container for the provision and storage of the inert gas in liquified form, and a vaporizer connected to the container for vaporizing at least a portion of the inert gas and discharging same into the internal air atmosphere of the enclosed space. The vaporizer thereby directly or indirectly extracts the heat energy needed to vaporize the liquid inert gas from the internal air atmosphere of the enclosed space.

Abstract: An inertization method for preventing fire or explosion in a first enclosed protected area by lowering the oxygen content in the protected area to a base inertization level relative-to the ambient air. With the objective of eliminating any danger to people or processes within the protected area, the method according to the invention provides for measuring the oxygen content in the protected area, comparing it to a threshold (maximum inertization level), and in the event it falls below the threshold (maximum inertization level), introducing fresh air into the protected area(s).

Abstract: A camshaft adjuster arrangement (2) having a camshaft (4) and a rotor (6) for a camshaft adjuster. The rotor (6) has a central bore (8) for a fixing element (14), the rotor being mounted on the camshaft (4) in a rotationally fixed manner by the fixing element (14). The mounting of the camshaft adjuster arrangement (2) is simplified by forming a frictional connection between the camshaft (4) and the rotor (6) using a clamping unit (16).

Abstract: A camshaft adjuster (2) having a locking cover (1) formed of sheet metal, wherein the locking cover (1) has a substantially disc-shaped base surface (3) and has a collar (7), which extends in an axial direction (5) and which runs at least partially around the base surface (3), for receiving a spring cover (31). As a result of the production of the locking cover (1) from sheet metal in combination with a turned-up collar (7), the locking cover (1) can be produced simply and cost-effectively and nevertheless offers adequately high strength despite the low material thickness.

Abstract: The present invention relates to an inerting method for reducing a risk of fire outbreak in an enclosed space as well as a device therefor. A continuous inerting of the enclosed space to spatially-separated zones of the enclosed space is performed as necessary without needing structural separations. At least one inert gas having a gas density (?Gas) which differs from the mean gas density (?Gas) of the ambient atmosphere of the space is introduced into the enclosed space such that a gas stratification including a first gas layer (A) and a second gas layer (B) forms in the enclosed space, wherein the oxygen content in the first gas layer (A) corresponds substantially to the oxygen content of the ambient atmosphere, and wherein the oxygen content in the second gas layer (B) corresponds to a specific, definable oxygen content which is lower than the oxygen content of the ambient atmosphere.

Abstract: A method and device for preventing fire and for extinguishing fire in an enclosed space in which a permanent negative pressure is set, includes fresh air being supplied in a regulated manner to the compartment atmosphere as supply air and exhaust air being discharged from the compartment atmosphere in a regulated manner, and wherein should a fire occur or to prevent a fire, an extinguishing agent which is gaseous under normal conditions is supplied to the compartment atmosphere as the supply air. In order to achieve a relieving of pressure without changing the set negative pressure, or upon a sudden flooding of the space with the gaseous extinguishing agent, the total volume flow of fresh air and/or extinguishing agent supplied to the compartment atmosphere as supply air is at all times less than or equal to the volume flow of the exhaust air discharged from the compartment atmosphere.

Abstract: The invention relates to an inert gas fire-extinguishing system for reducing the risk of and extinguishing fires in a protected room. So as to have the inerting of the protected room ensue according to different variable sequences of events, the inert gas fire-extinguishing system includes a pressure-reducing device having at least two parallel branches, wherein each parallel branch has a pressure-reducing mechanism. Each parallel branch is connectable to a high-pressure collecting line and a low-pressure extinguishing line via a controllable valve, whereby each pressure-reducing mechanism is designed to reduce a high input pressure to a low output pressure according to a known pressure-reducing characteristic curve.

Abstract: This method makes it possible, with highest possible precision and without any major expense, to determine the air tightness of an enclosed space. Specifically, it introduces a method which, on demand and in effective yet easy-to-implement fashion, permits at any time the updated determination of the existing air tightness of the enclosed space without requiring a complex test series. To that effect, the first step according to the method is to define a concentration gradient between the internal air atmosphere of an enclosed space and the ambient air atmosphere by setting the physical concentration of at least one constituent component of the space-internal air atmosphere, in particular of oxygen, at a value that differs from the physical concentration value of that minimum of one corresponding component in the ambient air atmosphere.

Abstract: The invention relates to an inertization device for establishing and maintaining a presettable inertization level in a protective room. The inertization device has an inert gas system for providing inert gas, a supply pipe system connected to the inert gas system for supplying the inert gas to the protective room, and an inert gas system control unit for controlling the inert gas system. The rate the inert gas rate is provided determines a level of inertization inside the protective room. In order for the inert gas rate supplied to the protective room to be appropriately controlled, even in the event of a disruption in the control of the inert gas system or in the event of a failure of the inert gas system control unit, a safety device is provided.

Abstract: In the event of a failure of a fire prevention or extinguishing system, an inertization method reduces the fire risk in an enclosed protected area, where the oxygen content in the area can be maintained on a control concentration that lies below an operating concentration for a certain time period, so that the emergency operation phase is sufficiently long to prevent the ignition and/or re-ignition of combustible materials therein. The control concentration is maintained for an emergency operation period by a redundant secondary source. Alternatively, the control concentration and the operating concentration, while forming a safety margin, can be lowered so far below the design concentration that in the event of a primary source failure, the growth curve of the oxygen content reaches a limit concentration determined for the area in a predefined period, which is sufficiently long to continue to prevent the ignition and/or re-ignition of the combustible materials.

Abstract: An apparatus for fire detection in an electrical equipment rack includes a suction pipe system which communicates with the rack monitored through at least one suction opening and through which a representative air sample is drawn from the rack, an early fire detection module having at least one detector unit for detecting at least one fire parameter in the air sample extracted through the suction pipe system, and a controller for issuing an early fire detection signal in response to the result detected with the at least one detector unit. The early fire detection module is configured as a rackmount to be inserted into the rack.

Abstract: The present invention relates to an inertization process for decreasing a risk of fire and for extinguishing fires in a protected room, wherein an oxygen concentration in the protected room is first lowered to a specific base inertization level, and wherein the oxygen concentration in the protected room is maintained at the base inertization level. In the event of a fire, additional inert gas is introduced based upon the extent of the fire in the protected room to further decrease from the base inertization level to a first lowered level. The oxygen concentration is maintained at the first lowered level for a first preset time interval, and further decreased from the first lowered level to a full inertization level, if the fire has not yet been extinguished once the first preset time interval has elapsed.

Abstract: A method and apparatus for the controlled feeding of added air into a permanently inertized room in which a predefined inertization level is or must be set and maintained within a certain control range provide for the volume flow rate at which an inert gas is fed into the room atmosphere to attain a value that is adequate for maintaining the predefined inertization level in the room atmosphere that will minimize fire risk. In addition, provisions are made whereby at all times just enough fresh air is injected into the room atmosphere as is necessary to remove from the room atmosphere that proportional concentration of hazardous substances that has not already been removed, via a corresponding return-air exhaust system as a result of the injection of inert gas.

Abstract: The invention relates to an inertization device for establishing and maintaining an inertization level in a protective room. The inertization device has a controllable inert gas system for providing inert gas, a first supply pipe system connected to the inert gas system and the protective room to supply the inert gas to the protective room, and a control unit to control the inert gas system such that a presettable inertization level is established and maintained inside the protective room. In order to raise the inertization level inside the protective room rapidly to an accessibility level without requiring major structural measures, a valve controlled by the control unit is connected to the inert gas system and the first supply pipe system to supply the exhaust air prepared by the inert gas system as fresh air to the protective room.

Abstract: An inertization method for preventing fire or explosion in an enclosed protected area in which the oxygen content in the protected area is lowered relative to the ambient air. With the objective of enabling effective protection against fire even given gas emissions from solids or liquids within the protected area, when inflammable substances and/or gases are present in the enclosed protected area (for example hydrocarbons), the method according to the invention provides for regulating the oxygen content in the closed protected area as a function of the concentration of said inflammable gases.

Abstract: The present invention relates to an inerting method for extinguishing a fire in a closed room in which the oxygen content in the closed room is reduced to a specific inerting level within a given time (x), as well as a device for carrying out the method. In order to achieve the most exacting design possible to the inert gas fire-extinguishing system used during the inerting method, and in particular the most precise dimensioning possible to the inert gas to be provided, while simultaneously adhering to the required fire-fighting stage and re-ignition prevention stage necessary when extinguishing fires, the invention provides for the inerting level to be kept to the re-ignition prevention level within a given regulation range.

Abstract: The present invention relates to an inerting method for reducing a risk of fire outbreak in an enclosed space as well as a device therefor. A continuous inerting of the enclosed space to spatially-separated zones of the enclosed space is performed as necessary without needing structural separations. At least one inert gas having a gas density (?Gas) which differs from the mean gas density (?Gas) of the ambient atmosphere of the space is introduced into the enclosed space such that a gas stratification including a first gas layer (A) and a second gas layer (B) forms in the enclosed space, wherein the oxygen content in the first gas layer (A) corresponds substantially to the oxygen content of the ambient atmosphere, and wherein the oxygen content in the second gas layer (B) corresponds to a specific, definable oxygen content which is lower than the oxygen content of the ambient atmosphere.

Abstract: A method and device for preventing fire and for extinguishing fire in an enclosed space in which a permanent negative pressure is set, includes fresh air being supplied in a regulated manner to the compartment atmosphere as supply air and exhaust air being discharged from the compartment atmosphere in a regulated manner, and wherein should a fire occur or to prevent a fire, an extinguishing agent which is gaseous under normal conditions is supplied to the compartment atmosphere as the supply air. In order to achieve a relieving of pressure without changing the set negative pressure, or upon a sudden flooding of the space with the gaseous extinguishing agent, the total volume flow of fresh air and/or extinguishing agent supplied to the compartment atmosphere as supply air is at all times less than or equal to the volume flow of the exhaust air discharged from the compartment atmosphere.