EP3995777A1 - Aération d'une installation de tir - Google Patents

Aération d'une installation de tir Download PDF

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Publication number
EP3995777A1
EP3995777A1 EP21202585.2A EP21202585A EP3995777A1 EP 3995777 A1 EP3995777 A1 EP 3995777A1 EP 21202585 A EP21202585 A EP 21202585A EP 3995777 A1 EP3995777 A1 EP 3995777A1
Authority
EP
European Patent Office
Prior art keywords
outlet surface
air
surface section
ventilation
wall
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.)
Pending
Application number
EP21202585.2A
Other languages
German (de)
English (en)
Inventor
Matthias Winkelhaus
Frank Bolkenius
Jelle MOERLAND
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.)
Kampmann GmbH and Co KG
Ingenieursbureau En Technische Handel-Sonderneming Autron BV
Original Assignee
Kampmann GmbH and Co KG
Ingenieursbureau En Technische Handel-Sonderneming Autron BV
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 Kampmann GmbH and Co KG, Ingenieursbureau En Technische Handel-Sonderneming Autron BV filed Critical Kampmann GmbH and Co KG
Publication of EP3995777A1 publication Critical patent/EP3995777A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J11/00—Target ranges

Definitions

  • the invention relates to a ventilation system and a method for ventilating a shooting range and a shooting range with such a ventilation system.
  • the invention relates to the ventilation of a shooting range within an at least essentially closed room.
  • Shooting ranges also referred to as shooting lanes or shooting ranges, are used to fire firearms while complying with safety requirements. For example, when used to train security forces, automatic or semi-automatic firearms are fired in it. The resulting pollutants, e.g. in the form of gases, metal vapors, etc., must be removed from closed shooting ranges using a suitable ventilation system.
  • a closed shooting range usually comprises a space that is elongated in the firing direction and has a constant width and height. It has proven to be advantageous to ventilate such a space on one side so that the air flows through it in the direction of the shot.
  • FIG. 4 shows the U.S. 4,164,901 a closed shooting range with a ventilation system with air exhaust to the outside, located in the ceiling.
  • a recirculation system is also provided with an inlet on a wall remote from the shooter's position and filters for the air extracted there.
  • the filtered air is discharged into the room through an air chamber and an air-permeable diffusion wall behind the shooter's position. Air from the air chamber is evenly distributed across the width and height and flows in a horizontal direction.
  • a piston flow which flows through the space of the shooting range over the entire cross-section, is generally preferred for the ventilation of closed shooting ranges.
  • a piston flow is not safely and stably achieved in all cases with conventional ventilation systems that have a ventilation wall for discharging a completely homogeneous air flow over the entire width and height of the wall.
  • the flow can be significantly impaired, so that recirculation areas with an increased concentration of harmful gases can develop behind the obstacles.
  • Anisothermal boundary conditions such as different temperatures of the air and the surfaces involved, can also lead to mixing effects and undesired distribution of pollutant gases.
  • the inventors therefore propose systems, systems and methods in which a full-surface cross-sectional flow through an outlet surface is preferably achieved, but at least one section of the outlet surface can be subjected to an air flow with an air speed that is higher than other sections.
  • a particularly suitable and stable air guidance can be achieved, which advantageously can also efficiently ventilate suitably arranged obstacles, partitions or the like.
  • the ventilation system comprises a ventilation wall and an air supply for supplying air to the ventilation wall.
  • the ventilation wall has an outlet surface, which preferably extends over an entire outlet side of the ventilation wall.
  • the ventilation wall preferably extends at least essentially (ie, if necessary, except for narrow edge regions necessary for construction) over the entire height and width of a rear wall. A desired piston flow can thus be achieved by discharging an air flow over the full surface area of the outlet surface be made possible.
  • the outlet surface has at least a first and a second outlet surface section, further outlet surface sections being possible.
  • the first outlet surface section extends along at least one edge of the outlet surface, preferably at least essentially along the entire length of an edge section, preferably along the upper or lower edge.
  • the first outlet surface section can, for example, have the shape of a narrow rectangle with a width that is less than 30% of the length, preferably less than 20% of the length, particularly preferably 5-15% of the length.
  • the second outlet area section has a larger area than the first outlet area section and, in preferred embodiments, can be, for example, at least twice, particularly preferably at least 3 times as large as the first outlet area section. It comprises at least a middle surface section of the outlet area, that is to say preferably in particular the geometric center of the outlet area.
  • the air supply and/or the ventilation wall are designed to release at least two separate (partial) air flows with different properties.
  • a first flow of air may be discharged through the first outlet surface portion and a second flow of air may be discharged through the second outlet surface portion.
  • the air supply and/or the ventilation wall are designed in such a way that the first and the second air flow are each discharged as at least essentially homogeneous, rectified air flows.
  • a unidirectional air flow is understood to mean that it is preferably always aligned in the same direction over the entire width and height of the outlet surface section, preferably perpendicular to the outlet surface.
  • a homogeneous air flow means that the air speed at which the air flow is discharged is at least essentially homogeneous, ie the air flow has a largely the same air speed at all points of the first outlet surface section.
  • a homogeneous air flow can be understood, for example, as a speed distribution over the respective outlet surface section in which the air speed at each location differs from the average air speed of the air flow does not deviate by more than a maximum of 25%, preferably a maximum of 15%.
  • the first and second streams of air are discharged in a direction parallel and perpendicular to the outlet surface.
  • the second air flow is preferably suitable for generating a homogeneous piston flow in a closed space, i. H.
  • the flow is preferably at least essentially homogeneous over the height and width of the second outlet surface section and over the length of the ventilated space, so that a very favorable movement of the noxious gases that occur can be achieved with no or minimal turbulence, mixing, etc.
  • the first flow of air is discharged at a first air velocity and the second flow of air is discharged at a second air velocity.
  • the respective air speed can be understood to mean the average air speed, with the deviations being limited due to the homogeneous property.
  • the air supply and/or ventilation wall are designed in such a way that the air flows are or can be set up in such a way that the first and second air speeds differ, in particular it is made possible for the first air speed to be higher than the second air speed.
  • the shooting range is ventilated by the first air flow discharged at the first outlet surface section and the second air flow discharged at the second outlet surface section, the air speed of the first air flow being higher than that of the second air flow.
  • the method according to the invention and the ventilation system according to the invention have proven to be particularly advantageous compared to conventional ventilation systems and methods, in particular also those which provide ventilation exclusively by means of a homogeneous, full-area piston flow over the entire cross section of a space.
  • the first air flow the air speed of which can be set to a higher value than that of the second air flow, is discharged along a boundary surface of the room to be ventilated since the first outlet surface section is arranged along an edge of the outlet surface.
  • the second air stream preferably results in a plug flow over the entire remaining cross-section of the room to be ventilated.
  • the use of the ventilation system and method proves particularly advantageous for a shooting range having an elongated space with a front wall, a rear wall, side walls, a ceiling and a floor, with adjoining surfaces preferably being arranged at right angles to each other.
  • the ventilation wall of the ventilation system is used as a front wall to generate an air flow in a longitudinal direction to the rear wall. It is particularly preferred that the first air flow is directed along the floor, ie the first outlet surface section extends along the floor.
  • one or more obstacles can be arranged at a distance from the front wall, which are oriented at least in part transversely to the longitudinal direction, e.g. partition walls.
  • Such obstacles can be of any shape to be used in shooting training.
  • obstacles can be fastened to the floor, they can have an opening in the floor area.
  • the lower edge of an obstacle is arranged at a distance from the ground, for example by means of suitable holders or spacer elements. So e.g. B. a slit-shaped opening of 1 to 30cm, preferably 2 to 10cm height can be provided.
  • the first air stream with a higher air speed, which preferably spreads along the floor, can then be used particularly effectively to underflush the partition walls in order to ensure good ventilation and effective removal of harmful gases in the area behind the obstacles as well.
  • the air inlet and/or ventilation wall are possible in order to achieve the desired air flow distribution over the outlet surface of the ventilation wall reach.
  • these can be designed in such a way that a first air flow with a higher air speed and a second air flow with a lower air speed always result during operation.
  • two separate air supplies e.g. B. each with its own fan, can be provided, whereby the air speed through the first outlet surface section is always higher than at the second outlet surface section due to the design, e.g. through a higher delivery rate or running speed of a fan, a lower air resistance to achieve a lower pressure loss or a combination such measures.
  • one or more common fans are used to convey the air of both the first and the second air flow.
  • Air supply and/or ventilation wall can preferably be adjustable, so that the first and/or the second air speed can be changed and suitably adjusted.
  • this can be possible manually, for example by manually adjusting, for example, flaps, slides or other types of control elements for an air flow.
  • the ventilation wall or the air supply particularly preferably has at least one controllable control element with which the setting of a desired spatial air flow distribution over the outlet surface can be controlled by a suitable actuator, e.g. motor or other drive, e.g. electrically, hydraulically or otherwise.
  • a suitable actuator e.g. motor or other drive, e.g. electrically, hydraulically or otherwise.
  • further outlet surface sections are provided in addition to the first and the second outlet surface section, e.g.
  • control element can be adjustable at least between a first and a second position, as a result of which an air resistance in an air path in which the control element is arranged can be adjusted.
  • a passage can be opened, narrowed or blocked by adjusting the control element, as a result of which a respectively changed air path can be specified for the first and/or for the second air flow.
  • an air path with a higher air resistance can be specified than in the second position, ie a greater pressure loss can result.
  • control member can be a flap or some other form of air valve act, with the blocked in the first position, an air path with a lower pressure loss and in the second position of this air path is opened, so that there is a lower pressure loss.
  • control element can also be adjustable to intermediate positions between the first and second position, so that stepwise or gradual changes are possible.
  • a corresponding control element can be provided in the air duct to the first outlet surface section, to the second outlet surface section or in both.
  • the first air velocity is more than 0.5 m/s and up to 3.0 m/s, preferably 1.0-1.5 m/s.
  • the second air speed is preferably 0.2 m/s to 1 m/s, more preferably less than 1 m/s, particularly preferably 0.4-0.7 m/s.
  • the first air velocity is at least 50% higher than the second air velocity, more preferably at least twice.
  • the ventilation wall can comprise at least one air flow straightening layer.
  • This can be arranged in the area of the first outlet area section and/or the second outlet area section, preferably in the area of both outlet area sections and particularly preferably over the entire outlet area.
  • An air flow straightening layer preferably comprises a plurality of wall elements aligned in parallel in the desired direction, preferably regularly arranged and transversely spaced from one another.
  • a rectifying layer can comprise a plurality of individual wall elements, eg in a box or honeycomb arrangement.
  • the ventilation wall can have at least one filter layer, ie a layer which filters the air flowing through, for example with grids, fiber material, fleece or other filter material.
  • filter layers with different filter classes can be used, for example as particle filters, eg coarse dust filters, medium dust filters or fine dust filters.
  • particle filters eg coarse dust filters, medium dust filters or fine dust filters.
  • the ventilation wall is a construction comprising a first filter layer, an air flow straightening layer and a second filter layer, particularly preferably with the air flow straightening layer between the two filter layers.
  • the first filter layer, air flow straightening layer and second filter layer can follow one another directly or intermediate layers can be provided.
  • Such a structure particularly preferably achieves a homogeneous, rectified air flow.
  • the filter class and corresponding air resistance of the first and second filter layer can differ, for example the first filter layer arranged further forward in the direction of the air flow can be finer and thus have a higher air resistance or lead to a greater pressure loss than the second filter layer.
  • the aeration wall can be designed overall as a continuous, homogeneous surface which, for example, extends over the entire outlet surface.
  • the arrangement of a plurality of individual air-permeable panels next to one another is preferred, particularly preferably within a frame construction provided for this purpose.
  • the individual panels can preferably be arranged in rows and columns above and/or next to each other. Individual panels or all panels can be removable and replaceable for maintenance, cleaning and/or repair purposes.
  • the air supply can have at least two air supply chambers which are separate from one another and are each connected to an outlet surface section.
  • a first air supply chamber can be connected to the first outlet surface section and possibly separated therefrom by filter and/or rectification layers.
  • a second air supply chamber may communicate with the second outlet surface portion.
  • the various air flows can be achieved in a suitable manner by suitable air supply to the first and/or second air supply chamber.
  • a control element as already described, can be provided on one or both air supply chambers in order to specify a desired distribution of the air flow.
  • Fig.1 shows a schematic side view of a shooting range 10 with a ventilation system 30.
  • the shooting range 10 comprises a closed space 12 which is bounded by a front wall 14, a rear wall 16, side walls 18 ( Fig.2 ), a ceiling 20 and a floor 22.
  • the room 12 is intended to be used for target practice, with an area 24 being provided for the shooters to rest and firearms to be fired, which extends from the front wall 14 into the room 12 and the shooting direction corresponds to a longitudinal direction L of the room 12 .
  • Targets (not shown), for example, can be arranged in the area of the rear wall 16 .
  • Obstacles can be arranged in area 24 such as an in Fig.1, Fig.2 Partition 26 shown as an example.
  • Protects can, for example, stay in front of or behind the partition 26.
  • the ventilation system 30 comprises a ventilation wall 32 and an air supply 34 for supplying air to the ventilation wall 32.
  • the ventilation wall 32 supplies air to the space 12 in the longitudinal direction L, shown schematically by arrows.
  • the air in the room is sucked off by a suction device 36, so that overall there is a flow through in the longitudinal direction L and thus parallel to the weft direction within the space 12.
  • the ventilation wall 32 extends over the entire Height and width of the space 12. As will be explained in more detail below, the ventilation wall 32 is air permeable so that air can be introduced through a front outlet surface 40 which occupies the entire cross-section of the space 12.
  • the air supply 34 comprises a fan 42, which supplies air to the ventilation wall 32, for example from a pressure chamber or a supply line, via an antechamber 46 and first and second air supply chambers 48a, 48b.
  • This can be fresh air supplied from the outside, filtered air sucked off at the suction device 36 or a mixture of both.
  • a bulletproof device 38 is arranged inside the antechamber 46 .
  • the outlet surface 40 comprises a first outlet surface section 50a and a second outlet surface section 50b, which are separated from one another in the air supply.
  • the first outlet surface section 50a communicates with the first air supply chamber 48a, while the second outlet surface section 50b communicates with the second air supply chamber 48b.
  • the first outlet surface section 50a has the shape of a narrow rectangle, which extends in strips along the lower edge of the outlet surface 40 of the ventilation wall 32 adjacent to the base 22, while the second outlet surface section 50b forms the remaining part of the outlet surface 40.
  • the ventilation wall 32 comprises a plurality of individual panels 60a, 60b which are arranged next to one another and one above the other within a frame structure 62.
  • the individual panels 60a, 60b can be detached from the frame construction 62 if necessary and can therefore be replaced.
  • Two types of panels 60a, 60b are arranged in the ventilation wall 32, namely a first type of panel 60a with lower air resistance in the first outlet surface section 50a and a second type of panel 60b with higher air resistance in the second outlet surface section 50b.
  • FIG. 6 schematically shows the internal structure of a panel 60a comprising several layers.
  • the layer structure successively comprises a first filter layer 64, a rectifying layer 66, a second filter layer 68 and a front cover 70.
  • the construction of the layered structure serves to achieve a homogeneous, unidirectional air flow, which is discharged in the longitudinal direction L through the outlet surface 40 .
  • the first filter layer 64 arranged at the front in the direction of flow L forms a defined air resistance that is constant over the surface.
  • a fine particle filter eg an F 7 filter
  • the straightening layer 66 comprises a honeycomb lattice with individual wall elements 72 running parallel in the longitudinal direction L. This results in an equalization of the air distribution and also in the direction of the exiting air in the longitudinal direction L of the room, regardless of the supply direction.
  • the thickness of the straightening layer 66 and the dimensions of the honeycomb formed therein are selected such that, on the one hand, a pressure loss occurs, which leads to a further smoothing of the flow. On the other hand, an exact guidance of the air in the longitudinal direction L is achieved.
  • the second filter layer 68 is also designed as a particle filter, here as a coarse filter, for example a G5 filter.
  • the cover 70 is designed as a perforated material, for example perforated sheet metal.
  • the layer structure of the panel 60a causes a defined pressure loss when air is supplied from the rear and a homogeneous, rectified air flow is discharged via the outlet surface 40 on the front.
  • the second type of panel 60b like the first type of panel 60a, includes a first filter layer 64, a rectifying layer 66 and a second filter layer 68, and a cover 70.
  • the thickness of the first and second types of panels 60a, 60b differs second filter layers 66, 68, so that overall a lower pressure loss is achieved in the panel 60a of the first type. This can be achieved, for example, with finer filters and/or thicker layers.
  • the subdivision of the air supply 34 into a first and second air supply chamber 48a, 48b allows two separate airflows to be discharged at the outlet surface 40, namely a first airflow 80a via the first air supply plenum 48a through a panel 60 of the vent wall 32 for discharge through the first outlet surface portion 50a and a second airflow 80b via the second air supply plenum 48b, multiple panels 60 of the Vent wall 32 for discharge through second outlet surface portion 50b.
  • the first and the second air flow 80a, 80b are each homogeneous, rectified air flows, which are discharged parallel to one another in the longitudinal direction L.
  • air for both air streams 80a, 80b is provided by the common fan 42 ( 1 ).
  • the air paths differ in terms of the different air resistance of the panels 60a, 60b and in terms of the transition from the antechamber 46 to the first air supply chamber 48a and second air supply chamber 48b.
  • Access to the first air supply chamber 48a can be variably adjusted by a control element 72, shown here schematically, which can be adjusted by a control 74.
  • the control element 72 can be, for example, a flap that can be adjusted by a motor.
  • the air path from the antechamber 46 to the air supply chamber 48a can either be completely released, completely blocked or variably narrowed in an intermediate position.
  • the pressure loss over the entire air path of the first air flow 80a can be adjusted by the control device 74 .
  • the air path for the second air flow 80b from the antechamber 26 to the second air supply chamber 48b is free, so that in the example shown the air speed of the second air flow 80b is fixed with constant delivery by the fan 42, while the air speed of the first air flow 80a is variable by the controller 74 can be specified.
  • the air resistance in the air path for the first air flow 80a is lower than in the air path for the second air flow 80b due to the different panels 60a, 60b, so that a higher air speed of the first air flow can be set by opening the control element 72 accordingly.
  • the control element 72 is adjusted in such a way that the first air flow 80a has a higher air speed than the first air flow second air flow 80b. This can be achieved, for example, by opening the control element 72 to a large extent or even completely.
  • a desired air speed of the first air flow 80a can be set by specifying a suitable position of the control element 72 by the control 74 .
  • the first air flow 80a is discharged parallel to the floor 22 and follows the floor surface by the Coanda effect.
  • the second air flow 80b flows through the remaining cross section of the space 12, so that overall there is a piston flow with full-surface cross-sectional flow, which is very well suited for transporting harmful gases produced when the shot is fired.
  • the overall air flow distribution achieved is particularly well suited for backwashing obstacles such as the partition 26 shown as an example. This is arranged on spacers at a height of a few centimeters above the floor 22, so that between the floor 22 and a lower edge of the partition 26 a flow-through opening results, through which the first air stream 80a passes behind the partition wall 26. A suitable backwash of the partition wall 26 is achieved in this way.
  • the concrete design of the ventilation wall 32 and air supply 34 and the respective activation of the control element 72 can be selected differently.
  • a first air flow 80a with an air speed of preferably 1-1.5 m/s and a second air flow 80b with an air speed of preferably 0.4-0.7 m/s are set.
  • a separate air supply to the outlet surface sections 50a, 50b can also be provided with a plurality of fans, in particular separately controllable fans.
  • a control element can be provided in the air path to the second outlet surface section 50b.
  • the different formation of the panels 60a, 60b can be omitted if the air resistance in the air path to the second outlet surface section 50b is increased by other measures, for example additional filters or throttles.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
EP21202585.2A 2020-10-30 2021-10-14 Aération d'une installation de tir Pending EP3995777A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020128669.4A DE102020128669A1 (de) 2020-10-30 2020-10-30 Belüftung einer Schießanlage

Publications (1)

Publication Number Publication Date
EP3995777A1 true EP3995777A1 (fr) 2022-05-11

Family

ID=78463375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21202585.2A Pending EP3995777A1 (fr) 2020-10-30 2021-10-14 Aération d'une installation de tir

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EP (1) EP3995777A1 (fr)
DE (1) DE102020128669A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009867A1 (de) * 1990-03-28 1991-10-02 Nickel Gmbh Heinrich Verfahren zur durchlueftung von schiessanlagen sowie luftfuehrungssysteme zur ausuebung desselben
WO2000065285A1 (fr) * 1999-04-27 2000-11-02 Aimair, Inc. Systeme de ventilation reglable pour salle de tir
DE102007008019A1 (de) * 2007-02-15 2008-08-21 M+W Zander Gebäudetechnik GmbH Luftauslass und Verfahren zu dessen Herstellung
EP2738477A1 (fr) * 2011-07-29 2014-06-04 Koken Ltd. Dispositif de purification de l'air à l'échelle locale
US20190128651A1 (en) * 2017-10-26 2019-05-02 Cubic Corporation Modular firing range

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164901A (en) 1978-01-16 1979-08-21 American Air Filter Company, Inc. Indoor gun firing range enclosure having a ventilation system
US4598631A (en) 1984-09-04 1986-07-08 Everett Robert W Indoor gun firing range enclosure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009867A1 (de) * 1990-03-28 1991-10-02 Nickel Gmbh Heinrich Verfahren zur durchlueftung von schiessanlagen sowie luftfuehrungssysteme zur ausuebung desselben
WO2000065285A1 (fr) * 1999-04-27 2000-11-02 Aimair, Inc. Systeme de ventilation reglable pour salle de tir
DE102007008019A1 (de) * 2007-02-15 2008-08-21 M+W Zander Gebäudetechnik GmbH Luftauslass und Verfahren zu dessen Herstellung
EP2738477A1 (fr) * 2011-07-29 2014-06-04 Koken Ltd. Dispositif de purification de l'air à l'échelle locale
US20190128651A1 (en) * 2017-10-26 2019-05-02 Cubic Corporation Modular firing range

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