GB628465A - Improvements in or relating to methods and apparatus for foam generation - Google Patents
Improvements in or relating to methods and apparatus for foam generationInfo
- 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
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.
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)
| 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 |
-
1946
- 1946-04-30 GB GB12999/46A patent/GB628465A/en not_active Expired
Cited By (4)
| 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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