A collective NBC filtration system (FIG. 1A) for providing positive-pressure purified air to a plurality of subjects in a protected space, or in an environment which cannot be maintained at positive pressure, in conjunction with one or more facepiece fluidly connected to the NBC filtration system. The system comprises: A casing body [102] including a first section [136] defining an inner volume therein, and a second section [138] adjacent to the first section. The second section includes an inlet port [116], The first section has a larger cross-section than the second section, and forms a peripheral first ledge [142] surrounding the second section. At least one NBC filter accommodated in the inner volume. The at least one NBC filter is supported on the first ledge [142], A lid [104] including a central portion [154] and a second ledge [152] surrounding the central portion. The central portion [154] includes a plurality of outlet ports [118], which are sealable. The lid [104] is openable to provide access to the inner volume and is securely closeable to affix the at least one NBC filter therein the inner volume by the second ledge [152], The lid [104] and the at least one NBC filter define, when the lid is securely closed, an outlet compartment there between. The outlet compartment has about the same cross-section as the second section. A blower [108] housed within the second section. A suction port of the blower being fluidly coupled to the inlet port. The system is configured such that the second section [138] fluidly couples the inlet port [116] to at least one inlet of the respective at least one NBC filter, and, when the lid [104] is securely closed, the outlet compartment [302] fluidly couples at least one outlet of the respective at least one NBC filter to the one or more outlet ports [118] but is otherwise fluidly sealed, thereby preventing potentially contaminated air from entering the outlet compartment, except via the at least one NBC filter.
A62B 13/00 - Dispositifs spéciaux pour la ventilation d'abris étanches aux gaz
A62B 7/10 - Appareils respiratoires avec des éléments filtrants
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
B01D 46/12 - Séparateurs de particules utilisant des plaques, des feuilles ou des tampons filtrants à surface plane, p.ex. appareils de précipitation de poussières disposés en batteries
B01D 46/24 - Séparateurs de particules utilisant des corps filtrants creux et rigides, p.ex. appareils de précipitation de poussières
B01D 46/58 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs avec plusieurs éléments filtrants, caractérisés par leur disposition relative montés en parallèle
B60H 1/00 - Dispositifs de chauffage, de refroidissement ou de ventilation
A62B 11/00 - Dispositifs pour le reconditionnement de l'air respirable dans des enceintes closes
A62B 23/04 - Filtres en vue de la protection des voies respiratoires pour abris étanches aux gaz
B01D 46/10 - Séparateurs de particules utilisant des plaques, des feuilles ou des tampons filtrants à surface plane, p.ex. appareils de précipitation de poussières
2.
Modular NBC filtration system for protection shelters
An NBC filtration system whose main components are a filter unit, a blower, a manual air exchange backup unit and a changeover valve. The filter unit is elongated horizontally positioned along a top portion of a wall of the protected space. Inlet and outlet ports of the filter unit are located close to each other near a first extremity of the filter unit. The blower is driven by the electric motor through a second speed increasing transmission enabling rotation of an impeller of the blower. The blower is positioned along the filter unit near a second extremity distal from the inlet and outlet ports; The changeover valve has a tubular housing extending along the filter unit near the first extremity, and an internal displaceable tubular valve member. Each of the components may be replaced with a component of different capacity without effecting the other components.
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
A62B 13/00 - Dispositifs spéciaux pour la ventilation d'abris étanches aux gaz
F24F 8/10 - Traitement, p.ex. purification, de l'air fourni aux locaux de résidence ou de travail des êtres humains autrement que par chauffage, refroidissement, humidification ou séchage par séparation, p.ex. par filtrage
F24F 7/003 - Ventilation combinée avec le nettoyage de l'air
A62B 23/04 - Filtres en vue de la protection des voies respiratoires pour abris étanches aux gaz
B01D 46/10 - Séparateurs de particules utilisant des plaques, des feuilles ou des tampons filtrants à surface plane, p.ex. appareils de précipitation de poussières
B01D 46/42 - Equipement auxiliaire ou son utilisation
B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
3.
NBC FILTRATION SYSTEM WITH AIR EXCHANGE BACKUP UNIT
A near ceiling mounted NBC filtration system of collective protection shelters comprising a filter unit, a blower, and an air exchange backup unit [20] (FIG. 5). The air exchange backup unit [20] comprising: a plurality of hinged segments [22a, b, c] serially linked to each other to form a foldable arm. The hinged segments [22a, b, c] are configured for transmission of rotational motion between each other. At least one of the hinged segments comprises at least one stage of a first speed increasing transmission. A first end [24] of the air exchange backup unit is swiveably attached to an electric motor [42] driving a blower [40]. And a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates a shaft of the electric motor [42] at substantially a rated speed of the electric motor. The second end [26] of the air exchange backup unit is firmly attachable to a wall of the protection shelter at a convenient position for manual cranking of the hand crank [28]. The air exchange backup unit [20] is selectively folded up at normal times.
There is provided an NBC filtration system [10] (Fig. 3) for protected space comprising: an NBC filter unit [32]; an electric blower airflow coupled to the NBC filter unit; and a manually operated air exchange pump [50] configured to backup the electric blower in an event of power failure. The air exchange pump [50] further comprises: at least one variable volume chamber [54] operative in repeated cycles of expansion and contraction; at least two non return valves per each variable volume chamber; and a frequency increasing mechanism [69] configured for linking the manual operation to the at least one variable volume chamber. The frequency increasing mechanism converts a single stroke of the manual operation into a series of the mentioned cycles, an increase of the conversion ratio decreases the required physical size of the air exchange pump, thereby saving space and setup procedures.
An air filter for heavy dust conditions has an efficient scavenging system. The air filter includes: a housing, a permeable filter, and a scavenger system. The scavenger system disposes of particles collected on the upstream surface of the permeable filter. The scavenger system includes: an air suction source, and a shutter. The shutter is positioned substantially along, typically below, the permeable filter, at a certain distance from a wall, typically the bottom wall, of the housing. The air suction source draws air from a collecting space located between the shutter and the wall of the housing. The shutter is being selectively operated to permit or restrict passage there-through. The air suction source efficiently operates to scavenge particles from the collecting space when the passage through the shutter is at least partially restricted.
F02M 35/08 - Epurateurs d'air avec des moyens de dérivation
B01D 46/71 - Régénération de la substance filtrante ou des éléments filtrants à l'intérieur du filtre par action à contre-courant sur la surface filtrante, p.ex. en rinçant du côté du filtre sans gâteau avec du gaz sous pression, p.ex. de l'air pulsé
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
B01D 46/48 - Dépoussiérage autrement que par filtres épurateurs
An engine air filter for heavy dust conditions such as used in heavy military and off-road vehicles, including a scavenging system, and a method of operation thereof. The air filter includes: a housing, a precleaner, a permeable filter, and a scavenger system. The scavenger system disposes of particles collected at the precleaner and on the upstream surface of the permeable filter. The scavenger system includes: an air suction source and a three way valve. The three way valve is airflow coupled to the precleaner, to the permeable filter and to the air suction source. The three way valve enables scavenging of the precleaner and the permeable filter alternately. Optionally, the air filter may further includes a pulse jet back-flow flush system.
F02M 35/08 - Epurateurs d'air avec des moyens de dérivation
B01D 45/16 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge en utilisant la force centrifuge produite par le mouvement hélicoïdal du courant gazeux
B01D 46/52 - Séparateurs de particules utilisant des filtres comportant un matériau plié, p.ex. appareils de précipitation de poussières
B01D 50/20 - Combinaisons de dispositifs couverts par les groupes et
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
B01D 46/10 - Séparateurs de particules utilisant des plaques, des feuilles ou des tampons filtrants à surface plane, p.ex. appareils de précipitation de poussières
B01D 46/71 - Régénération de la substance filtrante ou des éléments filtrants à l'intérieur du filtre par action à contre-courant sur la surface filtrante, p.ex. en rinçant du côté du filtre sans gâteau avec du gaz sous pression, p.ex. de l'air pulsé
7.
Device and method for low energy atmospheric water generation
According to the present invention there is provided a device and method for atmospheric water harvesting operative in an alternating sequence of an absorption phase and a desorption phase. The device comprises an air permeable adsorbent substrate being subject to an atmospheric airflow during the absorption phase and being subject to a circulated airflow during the desorption phase. The device further comprises a liquid heated heat radiation element embedded in the adsorbent substrate and a heated liquid heating media being circulated in the heat radiation element during the desorption phase. The device may further comprise air shutters, where the direction of the atmospheric airflow being substantially transversal to the direction of the circulated airflow. The air shutters are capable of blocking an entrance and an exit of the atmospheric airflow during the desorption phase.
E03B 3/28 - Procédés ou installations pour obtenir ou recueillir de l'eau potable ou de l'eau courante à partir de l'humidité atmosphérique
B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
B01D 5/00 - Condensation de vapeurs; Récupération de solvants volatils par condensation
An air conditioning adapter for use with wall sleeves of shelters and safe rooms, offering the advantages of: multiple air conditioning installation options in a single device, simplicity in operation and error proof safety, accessibility of safety components being permanently secured to the device, and installation in existing standard wall sleeves. The air conditioning adapter comprises: a cover-plate [20] (Fig. 7) having at least one aperture [22], the cover-plate being permanently secured to a flange [32] of the wall sleeve [30] at the inner side of the wall. An airtight door [40] fitted to the cover-plate [20], the airtight door [40] covers and seals the at least one aperture [22] when closed, and exposes the at least one aperture when open. And a lock [50] configured to affix the airtight door in the closed position. The airtight door is selectively opened during normal times, permitting free airflow of a central air conditioning system, while preserving neat appearance of the protected space, and is closed and locked in an event of emergency, thus providing blast protection and air tightness. When the airtight door is closed and even if the central air conditioning system is left operative, the airflow is turned back and vented to the atmosphere, thus significantly reducing the risk of penetration of potentially contaminated air into the protected space. The air conditioning adapter may further include a plurality of holes made to the cover-plate adjacent the at least one aperture. The holes are sized to accept cable glands [62] for penetration of conduits cables and pipes of a split air conditioning system, while maintaining blast protection and air tightness.
F24F 13/08 - Organes de réglage de l'écoulement d'air, p.ex. persiennes, grilles, volets ou plaques directrices
F24F 11/00 - Aménagements de commande ou de sécurité
E04H 9/04 - Bâtiments, groupes de bâtiments ou abris conçus pour résister à des situations extérieures anormales, p.ex. à des bombardements, à des séismes ou à des climats extrêmes, ou pour se protéger de ces situations contre les raids aériens ou d’autres actes de guerre
F16L 5/00 - Dispositifs utilisés pour le passage des tuyaux, des câbles ou des conduits de protection au travers des murs ou des cloisons
H02G 3/22 - Installations de câbles ou de lignes à travers les murs, les sols ou les plafonds, p.ex. dans les immeubles
A collective NBC filtration system (Fig.1A) for providing positive-pressure purified air to a plurality of subjects in a protected space, or in an environment which cannot be maintained at positive pressure, in conjunction with one or more facepiece fluidly connected to the NBC filtration system. The system comprises: A casing body [102] including a first section [136] defining an inner volume therein, and a second section [138] adjacent to the first section. The second section includes an inlet port [116], The first section has a larger cross-section than the second section, and forms a peripheral first ledge [142] surrounding the second section. At least one NBC filter accommodated in the inner volume. The at least one NBC filter is supported on the first ledge [142], A lid [104] including a central portion [154] and a second ledge [152] surrounding the central portion. The central portion [154] includes a plurality of outlet ports [118], which are sealable. The lid [104] is openable to provide access to the inner volume and is securely closeable to affix the at least one NBC filter therein the inner volume by the second ledge [152], The lid [104] and the at least one NBC filter define, when the lid is securely closed, an outlet compartment there between. The outlet compartment has about the same cross-section as the second section. A blower [108] housed within the second section. A suction port of the blower being fluidly coupled to the inlet port. The system is configured such that the second section [138] fluidly couples the inlet port [116] to at least one inlet of the respective at least one NBC filter, and, when the lid [104] is securely closed, the outlet compartment [302] fluidly couples at least one outlet of the respective at least one NBC filter to the one or more outlet ports [118] but is otherwise fluidly sealed, thereby preventing potentially contaminated air from entering the outlet compartment, except via the at least one NBC filter.
A near ceiling mounted NBC filtration system [10] (Fig.8) for collective protection shelters having an optimized modular structure. The main building blocks comprising: a filter unit [30], a blower [40], a manual air exchange backup unit [20] and a changeover valve [50]. The filter unit [30] is elongated in shape horizontally positioned along a top portion of a wall of the protected space. An inlet port [36] and outlet port [38] of the filter unit are located in proximity to each other near a first extremity of the filter unit. The blower [40] is driven by the electric motor [42] through a second speed increasing transmission enabling rotation of an impeller of the blower at speeds of above 3000rpm. The blower [40] is positioned along the filter unit [30] near a second extremity thereof distal from the inlet port and outlet port; The changeover valve [50] comprises a tubular housing extending along the filter unit near the first extremity thereof, and an internal displaceable tubular valve member. The air exchange backup unit [20] comprising a plurality of hinged segments [22a, b, c] serially linked to each other, forming a foldable arm. A first end [24] of the air exchange backup unit is swiveably attached to the electric motor [42] and a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates the electric motor [42] at substantially a rated speed of the electric motor. The second end [26] of the air exchange backup unit is firmly attachable to a wall of the protection shelter at a convenient position for manual cranking of the hand crank [28]. Each of the building blocks of the NBC filtration system may be replaced with a block of different capacity without effecting the other blocks.
A near ceiling mounted NBC filtration system of collective protection shelters comprising a filter unit, a blower, and an air exchange backup unit [20] (Fig. 5). The air exchange backup unit [20] comprising: a plurality of hinged segments [22a, b, c] serially linked to each other to form a foldable arm. The hinged segments [22a, b, c] are configured for transmission of rotational motion between each other. At least one of the hinged segments comprises at least one stage of a first speed increasing transmission. A first end [24] of the air exchange backup unit is swiveably attached to an electric motor [42] driving a blower [40]. And a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates a shaft of the electric motor [42] at substantially a rated speed of the electric motor. The second end [26] of the air exchange backup unit is firmly attachable to a wall of the protection shelter at a convenient position for manual cranking of the hand crank [28]. The air exchange backup unit [20] is selectively folded up at normal times.
A floor-space saving NBC filtration system for collective protection shelters with NBC filter unit and means for changing the NBC filtration system state between a ventilation mode, effective during normal times or conventional hazard, and a NBC protection mode, effective during NBC hazard. The NBC filtration system is contained in a space out of a comfortable reach of the shelter occupants thus saving usable floor-space. The means for changing the NBC filtration system state is operated from a location within the comfortable reach of the shelter occupants. The NBC filter unit inlet and outlet are located at close proximity to each other, a pre-filter outlet is located in proximity to the NBC filter unit inlet and outlet with a changeover valve, serving as means for changing the NBC filtration system state, located there between. Resulting in simple operation and space saving by the changeover valve replacing prior art space consuming flexible pipes.
A62B 13/00 - Dispositifs spéciaux pour la ventilation d'abris étanches aux gaz
A62B 23/04 - Filtres en vue de la protection des voies respiratoires pour abris étanches aux gaz
B01D 46/42 - Equipement auxiliaire ou son utilisation
E04H 9/04 - Bâtiments, groupes de bâtiments ou abris conçus pour résister à des situations extérieures anormales, p.ex. à des bombardements, à des séismes ou à des climats extrêmes, ou pour se protéger de ces situations contre les raids aériens ou d’autres actes de guerre
The present invention provides an air filter [10] for heavy dust conditions, with an efficient scavenging system. The air filter [10] comprising: a housing [20] (Fig. 7), a permeable filter [28], and a scavenger system [30]. The scavenger system disposes of particles collected on the upstream surface of the permeable filter. The scavenger system comprising: an air suction source [24], and a shutter [32]. The shutter is positioned substantially along, typically below, the permeable filter [28], at a certain distance from a wall, typically the bottom wall [34], of the housing [20]. The air suction source draws air from a collecting space [36] located between the shutter [32] and the wall [34] of the housing [20]. According to the invention, the shutter is being selectively operated to permit or restrict passage there-through. The air suction source efficiently operates to scavenge particles from the collecting space [36] when the passage through the shutter is at least partially restricted.
A louver type blast valve making use of an aerodynamically configured blade, independently activated by air flow to block a blast shock wave and a subsequent return suction wave. The blast valve (FIG. 6) including a frame and at least one aerodynamically configured blade, independently activated by air flow to block a blast shock and a potentially following return wave. The aerodynamically configured blade having an elongated shape, including at least a steep convex surface and a flat or shallow concave surface, forming a leading edge and a trailing edge at the intersection of the surfaces. The blade being hinged to the frame about a longitudinal axis passing between the steep convex surface and the flat or shallow concave surface.
F24F 13/15 - Organes de réglage de l'écoulement d'air, p.ex. persiennes, grilles, volets ou plaques directrices mobiles, p.ex. registres à éléments basculants, p.ex. persiennes à lamelles parallèles basculables simultanément
F24F 13/14 - Organes de réglage de l'écoulement d'air, p.ex. persiennes, grilles, volets ou plaques directrices mobiles, p.ex. registres à éléments basculants, p.ex. persiennes
F16K 31/34 - Moyens de fonctionnement; Dispositifs de retour à la position de repos actionnés par un fluide et actionnés par un flotteur commandant une soupape-pilote commandant à son tour le dispositif obturateur
F24F 13/24 - Moyens pour éviter ou supprimer le bruit
The present invention relates to an engine air filter for heavy dust conditions such as used in heavy military and off-road vehicles, including a scavenging system, and a method of operation thereof. According to the invention, the air filter [10] (Fig. 2) comprises: a housing [20], a precleaner [60], a permeable filter [28], and a scavenger system. The scavenger system disposes of particles collected at the precleaner and on the upstream surface of the permeable filter. The scavenger system comprises: an air suction source and a three way valve [70]. The three way valve [70] is airflow coupled to the precleaner [60], to the permeable filter [28] and to the air suction source. The three way valve enables scavenging of the precleaner [60] and the permeable filter [28] alternately. Optionally, the air filter may further comprise a pulse jet back-flow flush system.
F16K 25/00 - SOUPAPES; ROBINETS; VANNES; COMMANDES À FLOTTEURS; DISPOSITIFS POUR VENTILER OU AÉRER - Détails constitutifs relatifs au contact entre corps de soupapes ou de clapets et leurs sièges
F16K 31/00 - Moyens de fonctionnement; Dispositifs de retour à la position de repos
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
B01D 35/00 - Dispositifs filtrants ayant des particularités non couvertes spécifiquement par les groupes , applications non couvertes spécifiquement par les groupes ; Dispositifs auxiliaires pour la filtration; Structure du carter de filtre
16.
DEVICE AND METHOD FOR LOW ENERGY ATMOSPHERIC WATER GENERATION
According to the present invention there is provided a device and method for atmospheric water harvesting operative in an alternating sequence of an absorption phase and a desorption phase. The device comprises an air permeable adsorbent substrate being subject to an atmospheric airflow during the absorption phase and being subject to a circulated airflow during the desorption phase. The device further comprises a liquid heated heat radiation element embedded in the adsorbent substrate and a heated liquid heating media being circulated in the heat radiation element during the desorption phase. The device may further comprise air shutters, where the direction of the atmospheric airflow being substantially transversal to the direction of the circulated airflow. The air shutters are capable of blocking an entrance and an exit of the atmospheric airflow during the desorption phase.
B01D 53/00 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols
B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
A compact, low cost, space saving and simple in operation Nuclear Biological Chemical (NBC) filtration system for residential safe rooms. The NBC filtration system [10] (Fig. 3) comprising: an NBC filter unit [20], an electric blower [22], a manually actuated backup bellows [24] and a protective cover [26]. Manual back and forth actuation of the backup bellows [24] is carried out with at least a portion of the protective cover [26] being actuated as well, thus eliminating the need to first detach the protective cover. The backup bellows [24] may comprise a deformable chamber [28] having a stationary first extremity [30] being airflow coupled to an outlet of the NBC filter unit [20], and a movable second extremity [36] being attached to and movable with the protective cover [26]. The protective cover [26] may be movably linked to the NBC filter unit [20] with a scissors mechanism [60].
A Nuclear Biological Chemical (NBC) filtration system, provided with a manually operated backup bellows and an actuation lever for operation thereof. In an embodiment, the NBC filtration system [10] (Fig.8), comprises: an NBC filter unit [12], a backup bellows [14], an electric blower, and an actuation lever [16]. Manual propulsion of the actuation lever [16] expands and contracts the backup bellows [14]. A grip-able portion [28] of the actuation lever [16] is accessible at a height lower than the installation height of the NBC filtration system. The NBC filtration system may further comprise a transmitting mechanism [80]. Manual propulsion of the actuation lever [16] drives the transmitting mechanism [80] to expand and contract the backup bellows [14]. The transmitting mechanism [80] may utilize the structure of a scissors mechanism.
A manually actuated backup bellows for Nuclear Biological Chemical (NBC) filtration systems, which is ready for immediate manual actuation in case of electric power failure. The backup bellows (Fig. 3) comprising: a deformable portion [22], a first closure [24] trimming a first end of the deformable portion, a second closure [26] trimming a second end of the deformable portion, at least one inlet port [28] fitted with an inlet one-way valve [30], and at least one outlet port [32] fitted with an outlet one-way valve [34]. Manual back and forth actuation of one of the first closure [24] or second closure [26] in relation to the other, expands and contracts the deformable portion [22]. According to an embodiment, the backup bellows further comprises an electric blower [36] fitted to an internal space of the backup bellows. The electric blower [36] is mounted to one of the inlet port [28] or outlet port. As a result, the backup bellows and the electric blower can be operated alternately, independently of each other.
The present invention provides a battery cooling system for hybrid vehicle and an operation method thereof, that contributes to extending the hybrid vehicle range of travel or time of operation. The battery cooling system includes: a liquid cooled battery pack [32] (fig. 1) and a liquid coolant located in a cooling space [26] between battery cells [22]. According to the invention, the liquid coolant is suitable as an internal combustion engine fuel, and the hybrid vehicle [10] can use the liquid coolant to run an internal combustion engine [24]. The liquid coolant may be used to run the internal combustion engine [24] after the battery pack [32] is drained of electric power.
An NBC filter unit (10) (Fig. 3) for use in a safe room NBC filtration system. The NBC filter unit (10) comprising: a casing (12), at least one inlet port (14), at least one outlet port (16), a particulate filter (18) and a gas adsorption filter (20). According to the invention, the NBC filter unit (10) further comprises an integral ventilation bypass (22) and air flow direction means (26) selectively operated to direct air flow internally from the at least one inlet port (14) to the at least one outlet port (16), either through the bypass (22), constituting a ventilation mode, or through the particulate filter (18) and the gas adsorption filter (20) constituting an NBC filtration mode.
The present invention relates to a louver type blast valve making use of an aerodynamically configured blade, independently activated by air flow to block a blast shock wave and a subsequent return suction wave. The blast valve (Fig. 6) comprising a frame [12] and at least one aerodynamically configured blade [52, 54, 56], independently activated by air flow [58] to block a blast shock and a potentially following return wave. The aerodynamically configured blade comprising an elongated shape, including at least a steep convex surface [16] and a flat or shallow concave surface [18], forming a leading edge [20] and a trailing edge [22] at the intersection of the surfaces. The blade being hinged to the frame [12] about a longitudinal axis [26] passing between the steep convex surface [16] and the flat or shallow concave surface [18].
F24F 13/00 - CONDITIONNEMENT DE L'AIR; HUMIDIFICATION DE L'AIR; VENTILATION; UTILISATION DE COURANTS D'AIR COMME ÉCRANS - Détails communs ou relatifs au conditionnement de l'air, à l'humidification de l'air, à la ventilation ou à l'utilisation de courants d'air comme écrans
F24F 13/14 - Organes de réglage de l'écoulement d'air, p.ex. persiennes, grilles, volets ou plaques directrices mobiles, p.ex. registres à éléments basculants, p.ex. persiennes
23.
COMPACT NBC FILTRATION SYSTEM FOR COLLECTIVE PROTECTION SHELTERS
A floor-space saving NBC filtration system for collective protection shelters with NBC filter unit and means for changing the NBC filtration system state between a ventilation mode, effective during normal times or conventional hazard, and a NBC protection mode, effective during N BC hazard. The NBC filtration system is contained in a space out of a comfortable reach of the shelter occupants thus saving usable floor-space. The means for changing the NBC filtration system state is operated from a location within the comfortable reach of the shelter occupants. The NBC filter unit inlet and outlet are located at close proximity to each other, a pre-fiIter outlet is located i n proximity to the NBC filter unit inlet and outlet with a changeover valve, serving as means for changing the NBC filtration system state, located there between. Resulting in simple operation and space saving by the changeover valve replacing prior art space consuming flexible pipes.
A thin film rectangular cuboid stand-up container composed of a first and a second elongated rectangular sheets of a thin film weldable plastic or laminate material, wherein the length of each of the first and second sheets is approximately equal to twice the length of a selected edge of the container plus the width of the other sheet, the first sheet is folded along two transversal lines to form first three panels of the rectangular cuboid container and the second sheet is folded along two transversal lines to form the complementary three panels of the rectangular cuboid container, the first and second sheets are seamed to each other along a welding margin surrounding their entire periphery forming an endless loop of fin like seam band extending along 8 of the 12 cuboid edges.
B65D 30/16 - Sacs, sachets ou réceptacles analogues caractérisés par leur forme ou leur conception à parois d'extrémité rigides, p.ex. gardant leur forme même à vide
brevets
