GB428103A - Improvements relating to foam generation for fire extinguishing purposes - Google Patents

Improvements relating to foam generation for fire extinguishing purposes

Info

Publication number
GB428103A
GB428103A GB1236/34A GB123634A GB428103A GB 428103 A GB428103 A GB 428103A GB 1236/34 A GB1236/34 A GB 1236/34A GB 123634 A GB123634 A GB 123634A GB 428103 A GB428103 A GB 428103A
Authority
GB
United Kingdom
Prior art keywords
mixing chamber
pipe
gas
chamber
mixing
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
GB1236/34A
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.)
CARL WERNER SOEDERBERG
Original Assignee
CARL WERNER SOEDERBERG
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 CARL WERNER SOEDERBERG filed Critical CARL WERNER SOEDERBERG
Priority to GB1236/34A priority Critical patent/GB428103A/en
Publication of GB428103A publication Critical patent/GB428103A/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
    • B01F25/31113—Devices specially adapted for generating foam, e.g. air foam with rotating elements, e.g. driven by one of the components for feeding or by the resulting mixture for additional mixing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Nozzles (AREA)

Abstract

428,103. Making foam. SODERBERG, C. W., c/o Aktiebolaget Pumpindustrie Askim, Gothenburg, Sweden. Jan. 12, 1934, No. 1236. [Class 47 (ii)] An apparatus for making foam comprises a mixing chamber 1 into which water under pressure from a pipe 2 is sprayed by a sprayer 3, such as a coarse-pitched screw thread, which imparts a rotary or swirling motion to the water stream and results in an increased pressure as the stream enters the chamber. A vessel 4 containing a foaming agent in liquid or powdered form is connected to the chamber 1 by pipes 5, 6, of which the pipe 6 extends into the space above the agent, so that the pressure in the mixing chamber serves to force out the agent. A gas intake 9 with a check valve 10 is connected to a source of compressed gas, preferably to the exhaust pipe of a motor. The exhaust gases may be additionally compressed, and the quantity of gas admitted is controlled by a valve. At the discharge end of the mixing chamber, a mixing member is provided comprising fixed pins 17 and rotary pins 16 driven by a propeller 15 or other means. Alternatively, a mixing member comprising wire nettings may be provided. In a modification, the pipe 6 may be connected to the source of compressed gas, or the gas and the water may enter the mixing chamber through the same inlet. The mixing chamber may be arranged at the end of a hose connected to the mixing chamber. In another modification, the mixing chamber is outwardly tapered.
GB1236/34A 1934-01-12 1934-01-12 Improvements relating to foam generation for fire extinguishing purposes Expired GB428103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1236/34A GB428103A (en) 1934-01-12 1934-01-12 Improvements relating to foam generation for fire extinguishing purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1236/34A GB428103A (en) 1934-01-12 1934-01-12 Improvements relating to foam generation for fire extinguishing purposes

Publications (1)

Publication Number Publication Date
GB428103A true GB428103A (en) 1935-05-07

Family

ID=9718479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1236/34A Expired GB428103A (en) 1934-01-12 1934-01-12 Improvements relating to foam generation for fire extinguishing purposes

Country Status (1)

Country Link
GB (1) GB428103A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477204A (en) * 1945-11-26 1949-07-26 Marion D Ravine Soil aerator
DE859860C (en) * 1950-09-24 1952-12-18 Wilhelm Dr Friedrich Device for adding a foaming agent liquid to a pressurized water flow to produce fire-extinguishing foam
US2988343A (en) * 1958-08-11 1961-06-13 Theodoric B Edwards Mechanical foam generator
US3231134A (en) * 1961-09-01 1966-01-25 Lorant Joseph John Spraying liquids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477204A (en) * 1945-11-26 1949-07-26 Marion D Ravine Soil aerator
DE859860C (en) * 1950-09-24 1952-12-18 Wilhelm Dr Friedrich Device for adding a foaming agent liquid to a pressurized water flow to produce fire-extinguishing foam
US2988343A (en) * 1958-08-11 1961-06-13 Theodoric B Edwards Mechanical foam generator
US3231134A (en) * 1961-09-01 1966-01-25 Lorant Joseph John Spraying liquids

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