EP0457174A1 - Dispositif pour évacuer des gaz d'un canon - Google Patents

Dispositif pour évacuer des gaz d'un canon Download PDF

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Publication number
EP0457174A1
EP0457174A1 EP91107459A EP91107459A EP0457174A1 EP 0457174 A1 EP0457174 A1 EP 0457174A1 EP 91107459 A EP91107459 A EP 91107459A EP 91107459 A EP91107459 A EP 91107459A EP 0457174 A1 EP0457174 A1 EP 0457174A1
Authority
EP
European Patent Office
Prior art keywords
bore
smoke extractor
smoke
barrel
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91107459A
Other languages
German (de)
English (en)
Other versions
EP0457174B1 (fr
Inventor
Roland Bertiller
Hubert Schneider
Gerd Dieterle
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.)
Mauser Werke Oberndorf GmbH
Original Assignee
Mauser Werke Oberndorf GmbH
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 Mauser Werke Oberndorf GmbH filed Critical Mauser Werke Oberndorf GmbH
Publication of EP0457174A1 publication Critical patent/EP0457174A1/fr
Application granted granted Critical
Publication of EP0457174B1 publication Critical patent/EP0457174B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
    • F41A13/06—Evacuating combustion gas from barrels
    • F41A13/08—Bore evacuators, i.e. chambers disposed around barrels for storing part of the combustion gas and subsequently injecting it into the barrel to provide suction

Definitions

  • the invention relates to a smoke evacuation device for gun barrels, which is essentially formed from a hollow cylinder which is arranged around the gun barrel and connected to it in a gas-tight manner and is connected to the caliber bore of the gun barrel by at least one blow-out bore running obliquely to the gun barrel mouth.
  • These smoke extractors are used to keep the combat area largely free of powder gases when shooting.
  • some of the high-tension gases enter the smoke extractor through the obliquely forward-directed holes in the weapon barrel.
  • the gas accumulated in the smoke evacuator flows out of the holes again at a relatively high speed and also entrains the gases located in the rear part of the gun barrel in the direction of the gun barrel muzzle.
  • the object of the invention is therefore to provide a smoke extractor for gun barrels of the type mentioned, which, despite its simple design, also ensures good functioning in both large and small sizes or gun barrel calibres.
  • this object is achieved in that at least one valve bore is provided between the caliber bore of the weapon barrel and the smoke extractor, which is acted upon by a check valve arranged in the smoke extractor.
  • the peculiarity of this new smoke extractor for gun barrels is the good function in both large and very small sizes. This makes it possible, for example, to attach smoke extractors to gun barrels that are used as insertion tubes for weapon systems.
  • the function of the smoke extractor is determined by the check valves, which control the inlet speed, the pressure and thus the blow-out time of the gas.
  • a particular advantage of these check valves, which are attached to the circumference of the weapon barrel within the smoke extractor, can be seen in their design and in the arrangement of the valve bores.
  • the check valves consist of layered leaf springs which are raised by the shot gases and which immediately close again as soon as the shot gas flow stops due to their inherent tension. The closing speed of this type of valve is very high.
  • the Y-shaped valve bores divide the gas stream flowing from the weapon barrel into the smoke extractor, so that the flow velocity of the gas is reduced. Due to the flat exit angle of the inlet openings in the smoke extractor, only a small opening angle of the leaf spring valves is necessary.
  • valves for smoke evacuators according to the invention remain maintenance-free over long series of wefts and are very durable. In addition, only a small overall height is required for this type of check valve.
  • a smoke extractor 8 in the form of a hollow cylinder is preferably arranged around a weapon barrel 7 in the central region thereof.
  • the smoke extractor 8 is connected at its front and rear end region to the weapon barrel 7 in a gas-tight manner by sealing rings 10 and 11.
  • the outer circumferential surface of the weapon barrel 7 in the area between the two sealing rings 10 and 11 is cut out in a ring.
  • the hollow cylinder of the smoke extractor 8 can also be formed radially outward in the area between the two sealing rings 10 and 11 in order to create a sufficiently large smoke extractor space 4.
  • the smoke extractor 8 can also be screwed onto the weapon barrel with a front threaded nut 12 and a locking ring (not shown here) in the present case.
  • the smoke extractor 8 can be secured against rotation at the rear end facing the closure by a wedge, also not shown. Any water that may accumulate in the smoke extractor can be drained off by a drain screw 13 in the rear area.
  • a blow-out bore 3 extends from the caliber bore 5 of the weapon barrel 7, which is oriented obliquely to the rear end of the weapon barrel at a flat angle to the longitudinal axis 9 of the weapon barrel and opens into the smoke evacuation chamber 4. Distributed over the circumference of the weapon barrel 7, a plurality of such blow-out bores 3 can advantageously be provided, which are advantageously arranged at regular intervals from one another.
  • the blow-out hole 3 opens out in the rear area of the smoke extractor chamber 4 in such a way that good outflow of the gases collected in the smoke extractor 8 is possible without interference.
  • Two side channels 2.2 branch off from the lower central channel 2.1, which are oriented in opposite directions by 180 degrees and open into the smoke evacuation chamber 4.
  • the two inclined channels 2.2 are each at a flat angle to the longitudinal axis 9 of the weapon barrel 7.
  • the two inlet openings 14 of a valve bore 2 are closed by a check valve 6, which is formed from a spring assembly made of layered leaf springs 6.1.
  • the individual leaf springs 6.1 can be of different sizes, and of course they can also be of the same size.
  • the entire spring assembly is held by a central screw 15, the longitudinal axis 16 of which passes through the longitudinal axis 17 of the lower channel 2.1 of the valve bore 2.
  • a washer 18 is inserted between the screw head and the uppermost leaf spring.
  • the screw 15 is screwed into a threaded bore in the jacket of the weapon barrel 7.
  • valve bore 2 instead of the single valve bore 2 shown in FIG. 1, a plurality of valve bores 2 with check valves 6 distributed over the circumference of the weapon barrel 7 are of course also possible within the meaning of the invention.
  • two lower inlet channels 2.1 which are always correspondingly assigned, can be provided for all valve bores.
  • these inlet channels 2.1 it is also possible to provide a circumferential annular groove, from which the oblique channels 2.2 then proceed.
  • FIG. 2 shows the state of the closed check valve 2 with a smoke evacuation chamber 4 completely filled with gases.
  • the compressed gases in the smoke evacuation chamber 4 now flow into the gun barrel 7 through the blow-out holes 3, which run obliquely in the direction of the mouth of the gun barrel.
  • the weapon breech not shown here, opens, so that a flow from the weapon breech to the weapon barrel muzzle arises and the gases in the rear part of the weapon barrel 7 are carried forward.
  • This operating principle keeps the battle area of a battle tank or a weapon turret free of co-concentrations.
  • this invention has the advantages of a function which is significantly improved over the prior art. There is no longer any health risk and a longer period of use and therefore more training is possible. In addition, the smoke extractor is almost maintenance-free thanks to the special design of the check valve 6.
  • the smoke extractor 8 designed as a hollow cylinder can be arranged both eccentrically and centrally around the weapon barrel 7.
  • a smoke extractor 8 which is circular in cross section
  • other cross sections such as oval or polygonal cross sections, are also possible within the meaning of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Nozzles (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP91107459A 1990-05-17 1991-05-08 Dispositif pour évacuer des gaz d'un canon Expired - Lifetime EP0457174B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015822A DE4015822A1 (de) 1990-05-17 1990-05-17 Rauchabsauger fuer waffenrohre
DE4015822 1990-05-17

Publications (2)

Publication Number Publication Date
EP0457174A1 true EP0457174A1 (fr) 1991-11-21
EP0457174B1 EP0457174B1 (fr) 1994-03-09

Family

ID=6406583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91107459A Expired - Lifetime EP0457174B1 (fr) 1990-05-17 1991-05-08 Dispositif pour évacuer des gaz d'un canon

Country Status (8)

Country Link
US (1) US5109748A (fr)
EP (1) EP0457174B1 (fr)
JP (1) JP3115351B2 (fr)
AU (1) AU636025B2 (fr)
CA (1) CA2042205C (fr)
DE (2) DE4015822A1 (fr)
ES (1) ES2051538T3 (fr)
IL (1) IL98168A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6543174B2 (en) 1997-06-03 2003-04-08 Metal Storm Limited Barrel assembly with over-pressure relief
US6460446B1 (en) * 1999-09-03 2002-10-08 The United States Of America As Represented By The Secretary Of The Army Sonic rarefaction wave recoilless gun system
ATE360794T1 (de) * 2003-07-02 2007-05-15 Denel Pty Ltd Rauchabsauger
HU227997B1 (hu) * 2005-03-16 2012-08-28 Istvan Attila Levai Növelt lõportöltettel és növelt hosszúságú csõvel rendelkezõ nyomásakkumulátoros lõfegyver
US8567300B1 (en) * 2010-11-22 2013-10-29 The United States Of America As Represented By The Secretary Of The Army Time-delayed gun bore evacuator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2807986A (en) * 1953-07-03 1957-10-01 Wellington R Howard Bore evacuator for gun barrels
US3122055A (en) * 1962-06-06 1964-02-25 Sr Donald M Roeck Bore evacuator for artillery type guns
US3377918A (en) * 1966-04-21 1968-04-16 Army Usa Split ring valve for bore evacuator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118342A (en) * 1964-01-21 Bore evacuator for cannons
US1334507A (en) * 1919-01-20 1920-03-23 Harry L Shartle Valve construction for pumps
US2791940A (en) * 1948-04-28 1957-05-14 Sumpter M Speake Device for purging guns
US2766661A (en) * 1953-10-09 1956-10-16 Margulis Waldo Bore evacuator with elastic action
US3715955A (en) * 1970-02-12 1973-02-13 Maremont Corp Machine gun gas actuating and evacuation system
US4319452A (en) * 1978-09-12 1982-03-16 Nissan Motor Company, Limited Secondary air supply device
US4724937A (en) * 1984-09-04 1988-02-16 General Motors Corporation Hydraulic damper for vehicles with variable deflected disk piston valving

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2807986A (en) * 1953-07-03 1957-10-01 Wellington R Howard Bore evacuator for gun barrels
US3122055A (en) * 1962-06-06 1964-02-25 Sr Donald M Roeck Bore evacuator for artillery type guns
US3377918A (en) * 1966-04-21 1968-04-16 Army Usa Split ring valve for bore evacuator

Also Published As

Publication number Publication date
JP3115351B2 (ja) 2000-12-04
DE4015822A1 (de) 1991-11-21
US5109748A (en) 1992-05-05
JPH04227491A (ja) 1992-08-17
AU636025B2 (en) 1993-04-08
AU7529291A (en) 1991-11-21
IL98168A0 (en) 1992-06-21
EP0457174B1 (fr) 1994-03-09
DE59101134D1 (de) 1994-04-14
ES2051538T3 (es) 1994-06-16
CA2042205C (fr) 1995-12-12
IL98168A (en) 1994-06-24
CA2042205A1 (fr) 1991-11-18

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