DE711740C - Air foam generation pipe for fire extinguishing purposes - Google Patents

Air foam generation pipe for fire extinguishing purposes

Info

Publication number
DE711740C
DE711740C DEF84433D DEF0084433D DE711740C DE 711740 C DE711740 C DE 711740C DE F84433 D DEF84433 D DE F84433D DE F0084433 D DEF0084433 D DE F0084433D DE 711740 C DE711740 C DE 711740C
Authority
DE
Germany
Prior art keywords
foam
foam generation
fire extinguishing
generation pipe
conical
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
Application number
DEF84433D
Other languages
German (de)
Inventor
Martin Friedel
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.)
MARTIN FRIEDEL
Original Assignee
MARTIN FRIEDEL
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 MARTIN FRIEDEL filed Critical MARTIN FRIEDEL
Priority to DEF84433D priority Critical patent/DE711740C/en
Application granted granted Critical
Publication of DE711740C publication Critical patent/DE711740C/en
Expired legal-status Critical Current

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

Description

Luftschaumerzeugungsrohr für Feuerlöschzwecke Die Erfindung betrifft ein Luftschaumerzeugungsrohr für Feuerlöschzwecke.Air foam generation pipe for fire extinguishing purposes The invention relates to an air foam generation pipe for fire extinguishing purposes.

Es ist bekannt, Luftschaum in an beiden Enden offenen Ejektorstrahlrohren zu erzeugen, bei denen der Schaum stets etwa in der Form eines zylindrischen Vollstrahles aus der Rohr mündung austritt. Diese Luftschaumerzeugungsrohre besitzen jedoch den Nachteil, daß es nicht möglich ist, mit ihnen einen geschlossenen, weittragenden Schaumstrahl aus der Rohrmündung auszustoßen, da der Schaumvollstrahl sich vorzeitig auflöst und zerflattert. It is known to use air foam in ejector nozzles that are open at both ends to produce, in which the foam is always approximately in the form of a cylindrical full jet emerges from the pipe mouth. However, these air foam generating tubes have the Disadvantage that it is not possible to use them to create a closed, far-reaching Eject foam jet from the muzzle, as the full foam jet is prematurely dissolves and flutters.

Dies soll erfindungsgemäß weitgehend dadurch vermieden werden, daß das Luftschaumerzeugungsrohr in der Strömungsrichtung an seinem hinteren Ende als Doppelrohr ausgebildet ist und das innere, gegebenenfalls verstellbar angeordnete 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. According to the invention, this should largely be avoided in that the air foam generating pipe in the flow direction at its rear end as Double tube is formed and the inner one, optionally arranged to be adjustable Tube due to its special conical design in connection with the outer, at the end narrowing mixing tube to achieve a conical foam ring jet when the foam emerges from the pipe mouth.

Auf diese Weise wird ein lange zusammenhaltender Schaumstrahl aus der Rohrmündung ausgestoßen, so daß er auch auf entferntere Brandstellen getragen werden kann. This creates a long cohesive jet of foam ejected from the muzzle, so that it was carried to more distant areas of fire can be.

Der Erfindung liegt die Erkenntnis zugrunde, daß die Ausbreitung des Schaumes durch das kegelförmig ausgebildete Austrittsende des Luftschaumerzeugungsrohres zu einem Ringstrahl den Schaumstrom beim Verlassen des Schaumrohres zwangsläufig nach der Mittelachse der Rohrmündung leitet und somit zu einem Vollstrahl zusammenführt, während umgekehrt bei den bekannten Schaumrohren der aus der Rohrmündung austretende Vollstrahl sich sofort nach Verlassen des Schaumrohres zu einem Kegelstrahl aus breitet und so den vorzeitigen Zerfall des Schaumstrahles hervorruft. The invention is based on the knowledge that the spread of the foam through the conical outlet end of the air foam generation tube the foam flow inevitably to a ring jet when leaving the foam tube directed towards the central axis of the pipe mouth and thus merges into a full jet, while conversely with the known foam pipes the one emerging from the pipe mouth Immediately after leaving the foam tube, the full jet turns into a conical jet spreads and thus causes the premature disintegration of the foam jet.

Auf der Zeichnung sind zwei Ausführungsbeispiele des Erfindungsgegenstandes dargestellt. The drawing shows two exemplary embodiments of the subject matter of the invention shown.

Abb. I und 2 zeigen zwei als Doppelrohre ausgebildete Schaumerzeugungsrohre. Fig. I and 2 show two foam generation tubes designed as double tubes.

Claims (1)

In den Abbildungen sind a die äußeren Schaummischrohre, b die Düsen ftir die Zu führung der flüssigen Schaumbestandteile und c die Luftansaugeöíinungen am vorderen Ende der Schaumerzeugungsrohre. Mit d sind die inneren kegeligen Rohre für die Schaumerzeugung und Schaumführung bezeichnet. i'ATENTANsP1Ucil: Luftschaumerzeugungsrohr für Feuerlöschzwecke, dadurch gekennzeichnet, daß das Schaumerzeugungsrohr in der Strömungsrichtung an seinem hinteren Ende als Doppelrohr (e, 6) ausgebildet ist und das innere, gegebenenfalls verstcllbar angeordnete Rohr (d) infolge seiner besonderen kegeligen Ausbildung in Verbindung mit dem äußeren, am Ende enger werden den Mischrohr (a) zur Erzielung eines kegelförmigen Schaumringstrahles beim Austritt des Schaumes aus der Rohrmündung dient. In the figures, a are the outer foam mixing tubes, b the nozzles for the supply of the liquid foam components and c the air intake at the front end of the foam generation tubes. With d are the inner conical tubes for foam generation and foam management. i'ATENTANsP1Ucil: air foam generation pipe for fire extinguishing purposes, characterized in that the foam generation pipe in the Direction of flow at its rear end is designed as a double tube (e, 6) and the inner, optionally adjustably arranged tube (d) due to its special features conical training in connection with the outer, at the end narrower the mixing tube (a) To achieve a conical foam ring jet when the foam emerges from the muzzle is used.
DEF84433D 1938-02-09 1938-02-09 Air foam generation pipe for fire extinguishing purposes Expired DE711740C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF84433D DE711740C (en) 1938-02-09 1938-02-09 Air foam generation pipe for fire extinguishing purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF84433D DE711740C (en) 1938-02-09 1938-02-09 Air foam generation pipe for fire extinguishing purposes

Publications (1)

Publication Number Publication Date
DE711740C true DE711740C (en) 1941-10-06

Family

ID=7114279

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF84433D Expired DE711740C (en) 1938-02-09 1938-02-09 Air foam generation pipe for fire extinguishing purposes

Country Status (1)

Country Link
DE (1) DE711740C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE838249C (en) * 1949-10-31 1952-05-05 Minimax Vertriebs G M B H Air foam generation pipe for fire extinguishing purposes
EP0477845A1 (en) * 1990-09-25 1992-04-01 Praxair Technology, Inc. In-line dispersion of gas in liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE838249C (en) * 1949-10-31 1952-05-05 Minimax Vertriebs G M B H Air foam generation pipe for fire extinguishing purposes
EP0477845A1 (en) * 1990-09-25 1992-04-01 Praxair Technology, Inc. In-line dispersion of gas in liquid

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