US2213122A - Foam producer for fire extinguishers - Google Patents

Foam producer for fire extinguishers Download PDF

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Publication number
US2213122A
US2213122A US241361A US24136138A US2213122A US 2213122 A US2213122 A US 2213122A US 241361 A US241361 A US 241361A US 24136138 A US24136138 A US 24136138A US 2213122 A US2213122 A US 2213122A
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United States
Prior art keywords
foam
receptacle
fire extinguishers
nozzle
foam producer
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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 - Lifetime
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US241361A
Inventor
Gohre Ernst
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CEAG Concordia Elekrizitats AG
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CEAG Concordia Elekrizitats AG
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    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/23—Mixing by intersecting jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/26—Foam

Definitions

  • FOAM PRODUCER FOR FIRE EXTINGUISHERS Filed Nov. 19, 1958 flilorzzay Patented Aug. 27, 1940 UNITED STATES FOAM PRODUCER FOR FIRE EXTINGUISHERS Ernst Giihre, Dortmund, Germany, assignor to I Concordia Elektrizitats Aktiengesellschaft,
  • My invention relates to improvements in foam producers for fire extinguishers, and more particularly in foam producers of the type comprising a pair of nozzles opening into a common con- 5 tainer having a delivery-opening, the said nozzles being connected respectively with a supply of a suitable liquid extinguishing medium and a gas adapted to transformthe said medium into a foam which is delivered through said delivery l0 opening.
  • the object of the improvements is to provide an apparatus of this type in. which the formation of dead spaces in which water is accumulated is prevented.
  • Another object of the improvements is to provide an apparatus in which the loss of pressure within the said receptacle is reduced to a minimum.
  • my invention consistsin constructing the 4 said receptacle substantially in the form of an oval or ovoid or pear, and mounting the said .20 nozzles in the longitudinal axis of the said oval shape composed of two sections b and e suitably connected with each other at f, the said receptacle having a delivery pipe (1 secured to its narrow end at g.
  • Axially of the said receptacle b, e a nozzle a is passed through the broad-end thereof so as to open into the same near the said broad end, and a second nozzle 0 is passed through the side wall of the body b, e,- the inner or delivery end of the said nozzle being bent at right angles towards the nozzle a and being located with its delivery end coaxially of the, said nozzle a and the receptacle b, e. 1
  • the liquid delivered into the recetacle b, e .through the nozzle 0. is impinged upon by the 10 gaseous" medium delivered coaxially thereof through the nozzle 0, and it is transformed thereby into a foam.
  • the said foam flows, without being subjected to stowing, to the pipe at and it is delivered therefrom outwardly. No dead'spaces in which liquid might accumulate are produced within the receptacle, and any loss of pressure Which'is not needed for the'formation of foam is avoided. Thus the efficiency of the apparatus is high.
  • a foam producing apparatus comprising. a receptacle of substantially oval shape and having ,a delivery pipe at one of its narrow ends extending substantially in the direction of the longi- 25 tudinal axis of said oval receptacle, and a pair of nozzles for the supply respectively of a liquid and a gaseous medium passed into the said receptacle and having their delivery openings opposed to each other and located substantially coaxially of the longitudinal axis of said receptacle, one of said nozzles being located near the end wall of said receptacle remote from said delivery pipe.

Description

Aug. 27, 1940. E. cam- RE 2,213,122
FOAM PRODUCER FOR FIRE EXTINGUISHERS Filed Nov. 19, 1958 flilorzzay Patented Aug. 27, 1940 UNITED STATES FOAM PRODUCER FOR FIRE EXTINGUISHERS Ernst Giihre, Dortmund, Germany, assignor to I Concordia Elektrizitats Aktiengesellschaft,
Dortmund, Germany, a joint-stock company of Germany Application November 19, 1938, Serial N 0. 241,361 In Germany September 24, 1938 2 Claims.
My invention relates to improvements in foam producers for fire extinguishers, and more particularly in foam producers of the type comprising a pair of nozzles opening into a common con- 5 tainer having a delivery-opening, the said nozzles being connected respectively with a supply of a suitable liquid extinguishing medium and a gas adapted to transformthe said medium into a foam which is delivered through said delivery l0 opening. The object of the improvements is to provide an apparatus of this type in. which the formation of dead spaces in which water is accumulated is prevented. Another object of the improvements is to provide an apparatus in which the loss of pressure within the said receptacle is reduced to a minimum. With these objects in view, my invention consistsin constructing the 4 said receptacle substantially in the form of an oval or ovoid or pear, and mounting the said .20 nozzles in the longitudinal axis of the said oval shape composed of two sections b and e suitably connected with each other at f, the said receptacle having a delivery pipe (1 secured to its narrow end at g. Axially of the said receptacle b, e a nozzle a is passed through the broad-end thereof so as to open into the same near the said broad end, and a second nozzle 0 is passed through the side wall of the body b, e,- the inner or delivery end of the said nozzle being bent at right angles towards the nozzle a and being located with its delivery end coaxially of the, said nozzle a and the receptacle b, e. 1
In the operation of the apparatus it is preferred to supply the liquid medium through the nozzle 5 a and the gaseous medium through the nozzle 0. But I wish it to be understood that my invention is not limited to this feature.
The liquid delivered into the recetacle b, e .through the nozzle 0. is impinged upon by the 10 gaseous" medium delivered coaxially thereof through the nozzle 0, and it is transformed thereby into a foam. The said foam flows, without being subjected to stowing, to the pipe at and it is delivered therefrom outwardly. No dead'spaces in which liquid might accumulate are produced within the receptacle, and any loss of pressure Which'is not needed for the'formation of foam is avoided. Thus the efficiency of the apparatus is high.
I claim: 1. A foam producing apparatus, comprising. a receptacle of substantially oval shape and having ,a delivery pipe at one of its narrow ends extending substantially in the direction of the longi- 25 tudinal axis of said oval receptacle, and a pair of nozzles for the supply respectively of a liquid and a gaseous medium passed into the said receptacle and having their delivery openings opposed to each other and located substantially coaxially of the longitudinal axis of said receptacle, one of said nozzles being located near the end wall of said receptacle remote from said delivery pipe.
2. A foam producing apparatus as claimed in ERNS'I. GOHRE. 40
US241361A 1938-09-24 1938-11-19 Foam producer for fire extinguishers Expired - Lifetime US2213122A (en)

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DE2213122X 1938-09-24

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616237A (en) * 1949-06-13 1952-11-04 Hugh A Gamble Moistener for cotton-picking spindles
US3297305A (en) * 1957-08-14 1967-01-10 Willie W Walden Fluid mixing apparatus
US5014790A (en) * 1987-10-24 1991-05-14 The British Petroleum Company Plc Method and apparatus for fire control
US5837168A (en) * 1996-12-03 1998-11-17 Rowe; Carroll G. Foam generating apparatus
US6138994A (en) * 1996-12-03 2000-10-31 Rowe; Carroll G. Foam generating apparatus
EP1171228A2 (en) * 1998-12-23 2002-01-16 B.E.E. International Ltd. Processing product components
US20030010506A1 (en) * 2000-03-03 2003-01-16 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616237A (en) * 1949-06-13 1952-11-04 Hugh A Gamble Moistener for cotton-picking spindles
US3297305A (en) * 1957-08-14 1967-01-10 Willie W Walden Fluid mixing apparatus
US5014790A (en) * 1987-10-24 1991-05-14 The British Petroleum Company Plc Method and apparatus for fire control
US5837168A (en) * 1996-12-03 1998-11-17 Rowe; Carroll G. Foam generating apparatus
US6138994A (en) * 1996-12-03 2000-10-31 Rowe; Carroll G. Foam generating apparatus
US6217009B1 (en) 1996-12-03 2001-04-17 Carroll G. Rowe Foam generating method
EP1171228A2 (en) * 1998-12-23 2002-01-16 B.E.E. International Ltd. Processing product components
EP1171228A4 (en) * 1998-12-23 2002-10-16 B E E Internat Ltd Processing product components
JP2002537963A (en) * 1998-12-23 2002-11-12 ビー・イー・イー・インターナショナル・リミテッド Processing of product components
US6749329B2 (en) 1998-12-23 2004-06-15 B.E.E. Corporation Processing product components
US20030010506A1 (en) * 2000-03-03 2003-01-16 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices
US7458427B2 (en) * 2000-03-03 2008-12-02 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices

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