DE838249C - Air foam generation pipe for fire extinguishing purposes - Google Patents
Air foam generation pipe for fire extinguishing purposesInfo
- Publication number
- DE838249C DE838249C DEM319A DE838249DA DE838249C DE 838249 C DE838249 C DE 838249C DE M319 A DEM319 A DE M319A DE 838249D A DE838249D A DE 838249DA DE 838249 C DE838249 C DE 838249C
- Authority
- DE
- Germany
- Prior art keywords
- foam
- star
- conical
- air foam
- guide surface
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
- B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
- B01F25/31112—Devices specially adapted for generating foam, e.g. air foam with additional mixing means other than injector mixers, e.g. screen or baffles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
Luftschaumerzeugungsrohr für Feuerlösdizwecke Die Erfindung betrifft ein Luftschaumerzeugungsrohr für Feuerlöschzwecke, das hinter dem Fangrohr ein sich in der Strömungsrichtung erweiterndes kegelförmiges Sieb enthält. Bei den bekannten Luftschaumerzeugungsrohren dieser Art, insbesondere bei denjenigen für größere Leistungen, wird durch das in dem Schaumrohr enthaltene kegelförmige Sieb, das an sich zur Verbesserung des Schaumes dient, eine gewisse Turbulenz erzeugt, die sich derart auswirkt, daß der aus der Schaumaustrittsdüse austretende Strahl eine gewisse unerwünschte Auflockerung zeigt. Ziel der Erfindung ist, hier Abhilfe zu schaffen.Air foam generation pipe for fire release purposes The invention relates to an air foam generation pipe for fire extinguishing purposes, which is located behind the catch pipe Contains conical sieve widening in the direction of flow. With the known Air foam generation pipes of this type, especially those for larger capacities, is through the conical sieve contained in the foam tube, which in itself improves of the foam is used, a certain turbulence is generated, which has such an effect that the jet emerging from the foam outlet nozzle a certain undesirable loosening up shows. The aim of the invention is to remedy this.
Zu diesem Zweck ist gemäß der Erfindung bei dem Luftschaumerzeugungsrohr innerhalb des Siehes ein Leitflächenstern angeordnet. Durch diesen Lcit'flichenskr'i wird der durch das Kegelsieb hindurchtretende Schaum in verschiedenen Teilströmungen geführt und hierdurch beruhigt und zu einer geradlinigen Strömung gezwungen. Um eine möglichst vollkommene Wirkung zu erzielen, ist es zweckmäßig, die äußere Form des Leitflächensterns derjenigen des Siebes anzupassen. Der Leitflächenstern liegt hierzu vorteilhaft mit seinen Längsrändern an der Innenwandung des Siebes an. Um die Führung des Schaumes bis nahe an den Schaumaustritt beizubehalten, weist der Leitflächenstern zweckmäßig einen Ansatz auf, mit dem er in die Schaumaustrittsdüse hineinragt. Bei Luftschaumerzeugungsrohren, die sich von ihrem größten Querschnitt, an dem das Kegelsieb endet, nach der Austrittsdüse hin wieder verjüngen, ist der Ansatz des Leitflächensterns in Anpassung an die umgebende Schaumrohrwandung vorzugsweise kegelförmig ausgebildet. Auf diese Weise erhält der Leitflächenstern etwa die Gestalt eines Doppelkegels. To this end, according to the invention, is in the air-foam generation pipe a baffle star is arranged within the sieve. Through this public policy the foam passing through the conical sieve becomes in different partial flows guided and thereby calmed and forced to a straight flow. Around To achieve the best possible effect, it is advisable to use the external shape of the guide surface star to match that of the sieve. The baffle star lies this is advantageous with its longitudinal edges on the inner wall of the sieve. Around to maintain the guidance of the foam up to close to the foam outlet, the Leitflächenstern expediently on an approach with which it enters the foam outlet nozzle protrudes. In the case of air foam generation pipes, which differ from their largest cross-section, at which the conical sieve ends, taper again towards the outlet nozzle, is the Approach of the guide surface star in adaptation to the surrounding foam tube wall is preferred conical educated. In this way, the baffle star is roughly shaped like a Double cone.
Es ist bereits ein Luftschaumerzeugungsrohr für Feuerlöschzwecke bekanntgeworden, bei dem ein vorzeitiges Auflösen und Zerflattern des aus der Rohrmündung austretenden Schaumstrahls dadurch vermieden wird, daß das Schaumerzeugungsrohr an seinem hinteren Ende als Doppelrohr ausgebildet ist und das innere Rohr infolge seiner besonderen kegeligen Ausbildung in Verbindung mit dem äußeren, am Ende enger werdenden Mischrohr zur Erzielung eines kegelförmigen Schaumringstrahles beim Austritt des Schaumes aus der Rohrmündung dient. Das bekannte Rohr enthält jedoch kein sich ir! der 'Strömungsrichtung erweiterndes kegelförmiges Sieb und auch keinen den Schaumstrom gleichrichtenden Leitflächenstern. It is already an air foam generation pipe for fire extinguishing purposes became known, in which a premature dissolution and fluttering of the from the muzzle escaping foam jet is avoided in that the foam generation pipe is designed as a double tube at its rear end and the inner tube as a result its special conical training in connection with the outer, narrower at the end developing mixing tube to achieve a conical foam ring jet at the outlet of the foam from the pipe mouth is used. However, the known pipe does not contain itself ir! the 'flow direction widening conical sieve and neither the foam flow rectifying baffle star.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. An exemplary embodiment of the invention is shown in the drawing.
Abb. I zeigt ein Luftschaumerzeugungsrohr gemäß der Erfindung in einem axialen Schnitt und Abb. 2 dasselbe Schaumrohr in einem Schnitt senkrecht zur Achse gemäß der Linie A-B der Abb. 1. Fig. I shows an air foam generating tube according to the invention in fig an axial section and Fig. 2 the same foam tube in a vertical section to the axis according to the line A-B of Fig. 1.
Die verschäumungsfähige Lösung tritt in Richtung von links durch die mit dem Schlauch verbundene Eingangskupplung I ein und wird durch die Zerteilerdüse 2 zerstäubt. Durch Injektorwirkung wird Luft von außen durch die Öffnungen 3 angesaugt. Das Gemisch aus Schaummittellösung und Luft durchströmt das Fangrohr 4 und trifft auf das durch einen Zentrierstern 5 gehaltene Kegelsieb 6 auf, das sich innerhalb des sich kegelförmig erweiternden Teiles 7 des Schaumrohres befindet und das zur Umwandlung des Schaumgemisches in einen gleichmäßig feinporigen, haltbaren Schaum wesentlich beiträgt. Nach Durchtritt durch das Kegelsieb 6 wird der Schaum durch den sich über die ganze Länge des Kegelsiebes erstreckenden Leitflächenstern 8 in einzelnen Strömungsbahnen geführt und dadurch beruhigt und zu einer geradlinigen Strömung gezwungen. Die Trennwände des Leitflächensterns können sowohl glatt und geschlossen als auch aufgerauht und durchbrochen sein. The foamable solution passes in the direction from the left the input coupling I connected to the hose and is through the splitter nozzle 2 atomized. Air is sucked in from the outside through the openings 3 by means of the injector effect. The mixture of foam concentrate solution and air flows through the catch tube 4 and hits on the held by a centering star 5 conical screen 6, which is within of the conically widening part 7 of the foam tube is and the for Conversion of the foam mixture into a uniform, fine-pored, durable foam contributes significantly. After passing through the conical sieve 6, the foam is through the guide surface star 8 extending over the entire length of the conical screen in guided individual flow paths and thereby calmed down and a rectilinear one Forced flow. The partitions of the baffle star can be both smooth and closed as well as roughened and perforated.
Der Leitflächenstern ragt mit einem Ansatz IO bis in die Schaumaustrittsdüse g hinein. Der Ansatz IO ist vorzugsweise ebenfalls kegelförmig ausgebildet und liegt mit seinen Längsrändern an der Innenwandung des sich verjüngenden Strahlrohrteils 1I an. Der gesamte Leitflächenstern hat daher die Gestalt eines Doppelkegels.The baffle star protrudes with a shoulder IO into the foam outlet nozzle g into it. The approach IO is preferably also conical and is located with its longitudinal edges on the inner wall of the tapered jet pipe part 1I at. The entire baffle star therefore has the shape of a double cone.
Der Leitflächenstern hat im ganzen die Wirkung, daß der Schaum in einem geschlossenen Strahl aus dem Schaumrohr austritt und diese Geschlossenheit über die gesamte Wurfweite im wesentlichen beibehält. Außerdem trägt der Leitflächenstern auch zur Verbesserung der Schaumqualität bei. The overall effect of the baffle star is that the foam in a closed jet emerges from the foam tube and this closeness Maintains essentially over the entire throw. In addition, the baffle star carries also contributes to improving the foam quality.
PATENTANSPR(CHL: I. Luftschaumerzeugungsrohr für Feuerlöschzwecke, das hinter dem Fangrohr ein sich in der Strömungsrichtung erweiterndes kegelförmiges Sieb enthält, dadurch gekennzeichnet, daß innerhalb des Siebes (6) ein Leitflächenstern (8) angeordnet ist. PATENT APPLICATION (CHL: I. Air foam generation pipe for fire extinguishing purposes, the one behind the catching tube is a conical one that widens in the direction of flow Contains sieve, characterized in that a guide surface star inside the sieve (6) (8) is arranged.
2. Luftschaumerzeugungsrohr nachAnspruch 1, dadurch gekennzeichnet, daß der Leitflächenstern (8) mit seinen Längsrändern an der Innenwandung des Siebes (6) anliegt. 2. Air foam generation pipe according to Claim 1, characterized in that that the guide surface star (8) with its longitudinal edges on the inner wall of the screen (6) is present.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM0000319 | 1949-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE838249C true DE838249C (en) | 1952-05-05 |
Family
ID=7290641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM319A Expired DE838249C (en) | 1949-10-31 | 1949-11-01 | Air foam generation pipe for fire extinguishing purposes |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE838249C (en) |
NL (1) | NL77490C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103415327A (en) * | 2010-10-19 | 2013-11-27 | 威尔法尔Hc有限责任公司 | Focused stream, aerated foam projecting nozzle including fixed wand system and method, as well as possibly portable center pointing nozzle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE631477C (en) * | 1932-12-13 | 1936-06-20 | Komet Kompagnie Fuer Optik Mec | Air foam generator for fire extinguishing purposes |
DE711740C (en) * | 1938-02-09 | 1941-10-06 | Martin Friedel | Air foam generation pipe for fire extinguishing purposes |
-
1949
- 1949-11-01 DE DEM319A patent/DE838249C/en not_active Expired
-
1950
- 1950-10-31 NL NL156990A patent/NL77490C/en active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE631477C (en) * | 1932-12-13 | 1936-06-20 | Komet Kompagnie Fuer Optik Mec | Air foam generator for fire extinguishing purposes |
DE711740C (en) * | 1938-02-09 | 1941-10-06 | Martin Friedel | Air foam generation pipe for fire extinguishing purposes |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103415327A (en) * | 2010-10-19 | 2013-11-27 | 威尔法尔Hc有限责任公司 | Focused stream, aerated foam projecting nozzle including fixed wand system and method, as well as possibly portable center pointing nozzle |
EP2629854A4 (en) * | 2010-10-19 | 2015-03-11 | Willfire Hc Llc | Fixed systems and methods for extinguishing industrial tank fires, with and without fixed roof, including aerated foam projecting nozzles and center directed nozzles |
EP2629852A4 (en) * | 2010-10-19 | 2015-07-01 | Tyco Fire & Security Gmbh | Focused stream, aerated foam projecting nozzle including fixed wand system and method as well as possibly portable center pointing nozzle |
EP3042699A1 (en) * | 2010-10-19 | 2016-07-13 | Tyco Fire & Security GmbH | Focused stream, aerated foam projecting nozzle including fixed wand system and method as well as possibly portable center pointing nozzle |
US9586069B2 (en) | 2010-10-19 | 2017-03-07 | Dwight P. Williams | Fixed systems and methods for extinguishing industrial tank fires, with and without fixed roof, including aerated foam projecting nozzles and center directed nozzles |
US10086223B2 (en) | 2010-10-19 | 2018-10-02 | Tyco Fire & Security Gmbh | Fixed systems and methods for extinguishing industrial tank fires, with and without fixed roof, including aerated foam projecting nozzles and center directed nozzles |
US10300317B2 (en) | 2010-10-19 | 2019-05-28 | Tyco Fire Products Lp | Focused stream, aerated foam projecting nozzle including fixed wand system and method as well as possibly portable center pointing nozzle |
US10835770B2 (en) | 2010-10-19 | 2020-11-17 | Tyco Fire Products Lp | Focused stream, aerated foam projecting nozzle including fixed wand system and method as well as possibly portable center pointing nozzle |
US10918896B2 (en) | 2010-10-19 | 2021-02-16 | Tyco Fire Products Lp | Focused stream, aerated foam projecting nozzle including fixed wand system and method as well as possibly portable center pointing nozzle |
US11065485B2 (en) | 2010-10-19 | 2021-07-20 | Tyco Fire Products Lp | Fixed systems and methods for extinguishing industrial tank fires, with and without fixed roof, including aerated foam projecting nozzles and center directed nozzles |
US11338160B2 (en) | 2010-10-19 | 2022-05-24 | Tyco Fire Products Lp | Focused stream, aerated foam projecting nozzle including fixed wand system and method as well as possibly portable center pointing nozzle |
US12017101B2 (en) | 2010-10-19 | 2024-06-25 | Tyco Fire Products Lp | Fixed systems and methods for extinguishing industrial tank fires, with and without fixed roof, including aerated foam projecting nozzles and center directed nozzles |
Also Published As
Publication number | Publication date |
---|---|
NL77490C (en) | 1955-03-15 |
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