GB628465A - Improvements in or relating to methods and apparatus for foam generation - Google Patents

Improvements in or relating to methods and apparatus for foam generation

Info

Publication number
GB628465A
GB628465A GB12999/46A GB1299946A GB628465A GB 628465 A GB628465 A GB 628465A GB 12999/46 A GB12999/46 A GB 12999/46A GB 1299946 A GB1299946 A GB 1299946A GB 628465 A GB628465 A GB 628465A
Authority
GB
United Kingdom
Prior art keywords
orifices
hood
nozzle
foam
plate
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
GB12999/46A
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.)
Rockwood Sprinkler Co
Original Assignee
Rockwood Sprinkler Co
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 Rockwood Sprinkler Co filed Critical Rockwood Sprinkler Co
Publication of GB628465A publication Critical patent/GB628465A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)

Abstract

628,465. Making foam. ROCKWOOD SPRINKLER CO. OF MASSACHUSETTS. April 30, 1946, No. 12999. Convention date, May 8, 1945. [Class 47 (ii)] A foam generating nozzle comprises an inlet section 12 for foaming liquid, a hood 20, and a curved jet plate 10 formed with diverging orifices 14 each comprising two inclined passages 16. Liquid under pressure forced through the orifices is converted into a mist of fine droplets which entrains air through apertures 22 in the hood to form foam, the latter being refined by passage through a grid or screen 36 with a mesh of three to ten per inch. Preferably, a plate 24, with holes 32 aligned with the orifices 14, is spaced from the plate 10 so that some of the air entering at 22 is diverted into close association with the orifices 14. Liquid pressures greater than thirty pounds per square inch and air-toliquid ratios between five and eight to one are used. The nozzle is intended to produce a broadly divergent discharge of foam capable of blanketing a large area of fire and of shielding the operator of the nozzle from the heat. A concentrating extension hood may be provided, which first converges from the hood 20 and then is cylindrical. The nozzle may be used for producing an extinguishing mist or fog of water alone. Specifications 403,291 and 564,199, [Group XXIX], are referred to.
GB12999/46A 1945-05-08 1946-04-30 Improvements in or relating to methods and apparatus for foam generation Expired GB628465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US628465XA 1945-05-08 1945-05-08

Publications (1)

Publication Number Publication Date
GB628465A true GB628465A (en) 1949-08-30

Family

ID=22045219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12999/46A Expired GB628465A (en) 1945-05-08 1946-04-30 Improvements in or relating to methods and apparatus for foam generation

Country Status (1)

Country Link
GB (1) GB628465A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269762A (en) * 1992-08-22 1994-02-23 Roger Melhuish Flow mixers
CN107711794A (en) * 2017-11-15 2018-02-23 成都天麒科技有限公司 One kind atomization spray disk

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269762A (en) * 1992-08-22 1994-02-23 Roger Melhuish Flow mixers
GB2269762B (en) * 1992-08-22 1995-09-13 Roger Melhuish Mixing device and related method
CN107711794A (en) * 2017-11-15 2018-02-23 成都天麒科技有限公司 One kind atomization spray disk
CN107711794B (en) * 2017-11-15 2024-01-05 超农力(浙江)智能科技有限公司 Atomizing spray disc

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