CA2327476A1 - Improved fire fighting nozzle and method including pressure regulation, chemical and eduction features - Google Patents
Improved fire fighting nozzle and method including pressure regulation, chemical and eduction features Download PDFInfo
- Publication number
- CA2327476A1 CA2327476A1 CA002327476A CA2327476A CA2327476A1 CA 2327476 A1 CA2327476 A1 CA 2327476A1 CA 002327476 A CA002327476 A CA 002327476A CA 2327476 A CA2327476 A CA 2327476A CA 2327476 A1 CA2327476 A1 CA 2327476A1
- Authority
- CA
- Canada
- Prior art keywords
- nozzle
- fluid
- baffle
- pressure
- fire extinguishing
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
- A62C31/07—Nozzles specially adapted for fire-extinguishing with two or more outlets for different media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
- B05B1/323—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve member being actuated by the pressure of the fluid to be sprayed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/061—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with several liquid outlets discharging one or several liquids
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
A fire fighting nozzle for extinguishing industrial scale fires including improved automatic pressure regulating features, enhanced educting features having central (110) and peripheral channeling (94) for foam concentrate, combined with a capacity to throw dry chemicals. The improved pressure regulating features include a spring (50) loaded double acting baffle (13), that is positioned by fire fighting fluid in communication with a hydraulic chamber, the hydraulic chamber is preferably controlled by a relief valve (42).
Claims (33)
1. A pressure regulating nozzle for extinguishing fires, comprising:
a baffle adjustably located proximate a nozzle discharge;
the baffle providing forward and opposing pressure surfaces in fluid communication with a primary fire extinguishing fluid;
wherein baffle adjustment is affected, at least in part, by fluid pressure upon the forward and opposing baffle surfaces; and at least one relief valve triggered to relieve fluid pressure upon an opposing baffle pressure surface when sensed fire extinguishing fluid pressure proximate a baffle forward pressure surface exceeds a preselected relief valve pressure.
a baffle adjustably located proximate a nozzle discharge;
the baffle providing forward and opposing pressure surfaces in fluid communication with a primary fire extinguishing fluid;
wherein baffle adjustment is affected, at least in part, by fluid pressure upon the forward and opposing baffle surfaces; and at least one relief valve triggered to relieve fluid pressure upon an opposing baffle pressure surface when sensed fire extinguishing fluid pressure proximate a baffle forward pressure surface exceeds a preselected relief valve pressure.
2. The nozzle of claim 1 wherein, for at least a significant pressure range for the nozzle, an effective opposing pressure surface area of the baffle exceeds an effective forward pressure surface area of the baffle.
3. The nozzle of claim 2 that includes a spring biased relief valve.
4. The nozzle of claim 3 wherein the relief valve relieves a greater amount of fluid pressure on the opposing baffle surface when the sensed primary fire extinguishing fluid pressure exceeds to a greater extent a preselected relief valve pressure.
5. The nozzle of claim 1 wherein the baffle defines a baffle chamber and wherein primary fire extinguishing fluid pressure is sensed upon the outside of the baffle chamber.
6. The nozzle of claim 5 wherein the relief valve is located at least substantially within the baffle chamber.
7. The nozzle of claim 1 that includes a flow meter attached to the nozzle for measuring at least one indicator of fluid flow through the nozzle.
8. The nozzle of claims 1 or 5 that includes an eductor attached to the nozzle structured such that a supply of a fire extinguishing fluid to the nozzle provides an eductive force to educt a second fluid into the nozzle and to mix said second fluid with at least a preponderance of the fire extinguishing fluid proximate the nozzle discharge.
9. The nozzle of claim 8 that includes a variable orifice in addition to the adjustable baffle, for educting the second fluid into the nozzle, the orifice varying with the adjustment of the baffle.
10. The nozzle of claim 8 that includes means for supplying a third fluid chemical to the discharge end of the nozzle and for discharging the chemical encompassed by the fire extinguishing fluid.
11. The nozzle of claim 8 that includes an adjustable proportioning valve, in addition to the baffle, in fluid communication with the eductor structure such that the valve adjusts the amount of the second fluid educted in response to at least one of (a) the adjustment of the baffle; (b) the pressure of the fire extinguishing fluid;
and (c) the flow rate of the fire extinguishing fluid.
and (c) the flow rate of the fire extinguishing fluid.
12. The nozzle of claim 1 that includes means for supplying an additional fluid chemical to the discharge end of the nozzle and for discharging the chemical encompassed by the fire extinguishing fluid.
13. The nozzle of claim 8 wherein the second fluid is educted along peripheral portions of a nozzle wall.
14. The nozzle of claim 13 that includes nozzle assembly wall portions structured, in combination, to shape liquid flow proximate the assembly discharge into a relatively smooth annular stream having a cross sectional area that gradually diminishes to a minimum and subsequently expands; and an additive fluid discharge port structured to open onto a portion of the shaped annular stream downstream of and proximate to the minimum.
15. The nozzle of claim 13 wherein peripheral portions of the nozzle wall define a channel with an inlet for the second fluid and with at least one port proximate the inlet structured to direct a jet of fire extinguishing fluid into the channel.
16. The nozzle of claim 11 wherein the eductor is structured to educt the second fluid into a conduit surrounded by the primary fire extinguishing fluid.
17. A self educting pressure regulating nozzle for delivering a fire extinguishing fluid, comprising:
a baffle adjustably located proximate a nozzle discharge wherein the baffle and nozzle relatively adjust to vary a nozzle discharge port in response to a primary fire extinguishing fluid pressure, said adjustment moderated by a pilot valve sensing forward fluid pressure upon the baffle; and an eductor attached to the nozzle and structured such that the fire extinguishing fluid provides an eductive force to educt a second fluid into the nozzle and to mix the second fluid with at least a preponderance of the fire extinguishing fluid proximate the nozzle discharge.
a baffle adjustably located proximate a nozzle discharge wherein the baffle and nozzle relatively adjust to vary a nozzle discharge port in response to a primary fire extinguishing fluid pressure, said adjustment moderated by a pilot valve sensing forward fluid pressure upon the baffle; and an eductor attached to the nozzle and structured such that the fire extinguishing fluid provides an eductive force to educt a second fluid into the nozzle and to mix the second fluid with at least a preponderance of the fire extinguishing fluid proximate the nozzle discharge.
18. The nozzle of claim 17 including an adjustable proportioning valve in fluid communication with the eductor, the valve structured to adjust the amount of the second fluid educted in response to at least one of (a) the adjustment of the baffle; (b) the pressure of the fire extinguishing fluid at the nozzle; and (c) the flow rate of the fire extinguishing fluid at the nozzle.
19. The nozzle of claim 17 wherein said second fluid is educted along peripheral portions of the nozzle wall.
20. The nozzle of claim 17 that includes means for supplying an additional fluid chemical to the discharge end of the nozzle and for discharging the chemical encompassed by fire extinguishing fluid.
21. The nozzle of claim 20 wherein the chemical includes dry powder.
22. The nozzle of claim 19 wherein peripheral portions of the nozzle wall define a channel with an inlet for the second fluid and with at least one port proximate the inlet structured to direct a jet of fire extinguishing fluid into the channel.
23. A method for extinguishing fire comprising automatically adjusting a nozzle baffle to discharge a fire extinguishing fluid at approximately a targeted pressure;
educting an additive liquid into the nozzle using an eductive force provided by a primary fire fighting fluid;
mixing the additive liquid with at least a predominant portion of the fire extinguishing fluid proximate the nozzle discharge; and discharging a fluid chemical from the nozzle encompassed by a fire extinguishing fluid.
educting an additive liquid into the nozzle using an eductive force provided by a primary fire fighting fluid;
mixing the additive liquid with at least a predominant portion of the fire extinguishing fluid proximate the nozzle discharge; and discharging a fluid chemical from the nozzle encompassed by a fire extinguishing fluid.
24. An educting fire fighting nozzle assembly, comprising:
nozzle assembly wall portions structured, in combination, to shape liquid flow proximate the assembly discharge into a radially outwardly directed, relatively smooth annular stream having a cross sectional area that gradually diminishes to a minimum and subsequently slightly widens; and an additive fluid discharge port structured to open onto a portion of the outwardly directed shaped annular stream downstream of and proximate to the minimum and as the annular stream slightly widens.
nozzle assembly wall portions structured, in combination, to shape liquid flow proximate the assembly discharge into a radially outwardly directed, relatively smooth annular stream having a cross sectional area that gradually diminishes to a minimum and subsequently slightly widens; and an additive fluid discharge port structured to open onto a portion of the outwardly directed shaped annular stream downstream of and proximate to the minimum and as the annular stream slightly widens.
25. The assembly of claim 24 wherein wall portions of the nozzle assembly are structured such that cross sectional area of the annular stream increases across the additive port to at least account for the volume of additive educted into the stream.
26. The assembly of claim 24 wherein wall portions shape an annular stream of at least one inch in length.
27. The assembly of claim 24 wherein the length of the shaped annular stream is at least three times the width of the stream minimum cross sectional area.
28. A method for eductively discharging fire fighting fluids from a nozzle assembly, comprising shaping at least a major stream of liquid flowing through a nozzle assembly proximate an assembly discharge into a relatively smooth radially outwardly directed annular stream gradually diminishing to a minimum cross sectional area and subsequently expanding; and porting additive into a portion of the shaped annular stream downstream of and proximate to the minimum and as the annular stream slightly widens.
29. A fire fighting nozzle comprising means for adjusting a baffle to regulate discharge pressure of a fire fighting fluid in response to sensed fluid pressure; and means attached to the nozzle for educting a second fluid into the nozzle and for -21a-mixing the second fluid with at least a predominant portion of the fire fighting fluid proximate the nozzle discharge.
30. A fire fighting method comprising adjusting a baffle for regulating discharge pressure of a fire fighting fluid in response to sensed pressure;
educting a second fluid into the nozzle using means attached to the nozzle for providing an eductive force on the second fluid; and mixing the second fluid with at least a predominant portion of the fire fighting fluid proximate the nozzle discharge.
educting a second fluid into the nozzle using means attached to the nozzle for providing an eductive force on the second fluid; and mixing the second fluid with at least a predominant portion of the fire fighting fluid proximate the nozzle discharge.
31. The apparatus of claim 29 including means for discharging a fluid chemical encompassed by fire extinguishing fluid.
32. The method of claim 30 including discharging fluid chemical encompassed by fire extinguishing fluid.
33. A method for extinguishing fires comprising:
providing an adjustable baffle located proximate a nozzle discharge;
adjusting the location of the baffle with respect to the nozzle discharge, at least in part, by balancing fluid pressure upon forward and opposing baffle surfaces;
sensing fluid pressure proximate a baffle forward pressure surface; and triggering at least one relief valve to relieve fluid pressure upon opposing baffle pressure surface when sensed fluid pressure exceeds a preselected relief valve pressure.
providing an adjustable baffle located proximate a nozzle discharge;
adjusting the location of the baffle with respect to the nozzle discharge, at least in part, by balancing fluid pressure upon forward and opposing baffle surfaces;
sensing fluid pressure proximate a baffle forward pressure surface; and triggering at least one relief valve to relieve fluid pressure upon opposing baffle pressure surface when sensed fluid pressure exceeds a preselected relief valve pressure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8084698P | 1998-04-06 | 1998-04-06 | |
| US60/080,846 | 1998-04-06 | ||
| PCT/US1998/020061 WO1999051306A1 (en) | 1998-04-06 | 1998-09-25 | Improved fire fighting nozzle and method including pressure regulation, chemical and eduction features |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2327476A1 true CA2327476A1 (en) | 1999-10-14 |
| CA2327476C CA2327476C (en) | 2010-08-17 |
Family
ID=22160001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2327476A Expired - Fee Related CA2327476C (en) | 1998-04-06 | 1998-09-25 | Improved fire fighting nozzle and method including pressure regulation, chemical and eduction features |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1069929B1 (en) |
| CN (1) | CN1142802C (en) |
| AU (1) | AU745992B2 (en) |
| CA (1) | CA2327476C (en) |
| DE (1) | DE69841335D1 (en) |
| ES (1) | ES2337426T3 (en) |
| WO (1) | WO1999051306A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101939059B (en) * | 2007-12-12 | 2012-05-30 | 爱鹿赫德铜制品制造有限公司 | Smooth bore nozzle with adjustable bore |
| CN109237953A (en) * | 2018-07-23 | 2019-01-18 | 林建新 | A kind of nozzle and its injection compress control method |
| FR3112186A1 (en) * | 2020-07-02 | 2022-01-07 | Schrader | Pressure regulator for spraying a fluid and associated process |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US434633A (en) * | 1890-08-19 | Francis fayod | ||
| US3342419A (en) * | 1965-01-04 | 1967-09-19 | Harry Swartz | Dispensing shower head |
| US3684192A (en) | 1970-06-22 | 1972-08-15 | Fire Task Force Innovations In | Constant pressure, variable flow nozzle |
| US3863844A (en) | 1973-05-02 | 1975-02-04 | Fire Task Force Innovations In | Automatic fire nozzle with automatic control of pressure and internal turbulence combined with manual control of variable flow and shape of stream produced |
| US3904125A (en) * | 1974-03-14 | 1975-09-09 | Premier Ind Corp | Constant pressure nozzle discharge mechanism |
| US4289277A (en) * | 1980-04-07 | 1981-09-15 | Premier Industrial Corporation | Constant pressure nozzle with modulation effect |
| US4640461A (en) | 1982-07-16 | 1987-02-03 | Cause Consequence Analysis, Inc. | Foam-applying nozzle |
| US4623095A (en) * | 1984-11-19 | 1986-11-18 | Pronk Frank E | Liquid adding apparatus and method for a shower fixture |
| US4730774A (en) * | 1987-01-12 | 1988-03-15 | Shippee James H | Dual pressure compensating snowmaking apparatus |
| US5167285A (en) | 1991-03-21 | 1992-12-01 | Cca, Inc. | Dry powder and liquid method and apparatus for extinguishing fire |
| US5312041A (en) * | 1992-12-22 | 1994-05-17 | Cca, Inc. | Dual fluid method and apparatus for extinguishing fires |
| US5312048A (en) | 1993-03-25 | 1994-05-17 | Task Force Tips, Inc. | Regulating nozzle with adjustable effective area baffle |
| US5613773A (en) * | 1993-05-04 | 1997-03-25 | Scott Plastics Ltd. | Apparatus and method for generating foam from pressurized liquid |
| US5562248A (en) * | 1994-12-27 | 1996-10-08 | Khalifka; Mahmound | Showerhead with integrated soap dispenser |
| US5613733A (en) * | 1995-06-07 | 1997-03-25 | Ussc Group, Inc. | Device for the automatic operation of a seat release lever |
| US5779159A (en) | 1995-08-09 | 1998-07-14 | Williams, Deceased; Leslie P. | Additive fluid peripheral channeling fire fighting nozzle |
-
1998
- 1998-09-25 AU AU95088/98A patent/AU745992B2/en not_active Ceased
- 1998-09-25 CN CNB988141043A patent/CN1142802C/en not_active Expired - Fee Related
- 1998-09-25 EP EP98948538A patent/EP1069929B1/en not_active Expired - Lifetime
- 1998-09-25 DE DE69841335T patent/DE69841335D1/en not_active Expired - Lifetime
- 1998-09-25 WO PCT/US1998/020061 patent/WO1999051306A1/en active IP Right Grant
- 1998-09-25 CA CA2327476A patent/CA2327476C/en not_active Expired - Fee Related
- 1998-09-25 ES ES98948538T patent/ES2337426T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2327476C (en) | 2010-08-17 |
| AU745992B2 (en) | 2002-04-11 |
| EP1069929A1 (en) | 2001-01-24 |
| DE69841335D1 (en) | 2010-01-07 |
| CN1142802C (en) | 2004-03-24 |
| ES2337426T3 (en) | 2010-04-23 |
| EP1069929A4 (en) | 2004-05-06 |
| CN1306448A (en) | 2001-08-01 |
| WO1999051306A1 (en) | 1999-10-14 |
| AU9508898A (en) | 1999-10-25 |
| EP1069929B1 (en) | 2009-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160926 |