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WO1996001666A1 - Spray head - Google Patents

Spray head Download PDF

Info

Publication number
WO1996001666A1
WO1996001666A1 PCT/FI1995/000393 FI9500393W WO9601666A1 WO 1996001666 A1 WO1996001666 A1 WO 1996001666A1 FI 9500393 W FI9500393 W FI 9500393W WO 9601666 A1 WO9601666 A1 WO 9601666A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle opening
spray head
nozzles
fluid pressure
relatively large
Prior art date
Application number
PCT/FI1995/000393
Other languages
French (fr)
Inventor
Göran Sundholm
Original Assignee
Sundholm Goeran
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 Sundholm Goeran filed Critical Sundholm Goeran
Priority to AU28889/95A priority Critical patent/AU2888995A/en
Publication of WO1996001666A1 publication Critical patent/WO1996001666A1/en

Links

Classifications

    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3468—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber
    • B05B1/3473—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber in response to liquid pressure
    • 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
    • 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • 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
    • B05B1/3006—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 the controlling element 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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3447—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cylinder having the same axis as the outlet

Definitions

  • the present invention relates to a spray head having a number of nozzles for spraying liquid fog, said nozzles being positioned in respective housings.
  • Violent fires such as oil fires, and, alternatively, relatively small fires, which often are smouldering fires, may occur in, for instance, the engine rooms of ships.
  • a violent fire for example, in a diesel engine, a liquid fog jet with great penetration, i.e. with an ability to penetrate through rising hot air and flue gases down to the actual seat of fire, is at least initially required.
  • the site of a possible violent fire can normally be predicted with a high probability and the required spray heads can be placed at suitable places.
  • total flooding a small possibly smouldering fire may break out almost anywhere and the most reliable way to extinguish such a fire is to flood the entire space in question with fine liquid fog, so-called “total flooding”.
  • the object of the invention is to provide for a new spray head which can be used to extinguish both large, violent fires and small fires.
  • the spray head according to the invention is mainly characterized in that it has at least one nozzle having a relatively large nozzle opening in order to produce a powerful liquid fog jet at a high propellant fluid pressure, several nozzles having a respective considerably smaller nozzle opening in order to produce a fine liquid fog jet, and that said at least one nozzle having a relatively large nozzle opening is arranged to be closed by a spindle loaded with a spring in the direction of the fluid pressure at a fluid pressure which can be determined in advance.
  • nozzles having a respective relatively large nozzle opening for instance three such nozzles located centrally in the spray head, whereas the nozzles having a respective considerably smaller nozzle opening, for instance nine in number, are suitably arranged in the periphery in a circle.
  • the nozzles having a respective relatively large nozzle opening can be arranged to close at a fluid pressure of, for instance, 70 bar. Consequently, at a lower fluid pressure, the spray head sprays liquid fog only via the nozzles having a respective considerably smaller nozzle opening, whereby additional gas can very well be mixed into the liquid fog, for example in accordance with the disclosure of Finnish Patent Applica ⁇ tion 941,738 or 941,975.
  • Figure 1 shows a longitudinal section of a spray head.
  • Figure 2 shows on a larger scale a longitudinal section of a nozzle, in the open state, having a relative- ly large nozzle opening.
  • Figure 3 shows, like Figure 2, a nozzle, in the closed state, having a relatively large nozzle opening.
  • the spray head in Figure 1 comprises a housing provided with a central inlet channel 2 for extinguishing liquid.
  • the inlet channel 2 is via branches 3 in contact with nine nozzles 4 arranged in the periphery in a circle in the enclosed drawing, said nozzles having a housing and a relatively small nozzle opening, for instance 0.5 mm in diameter.
  • a further branch 6 extends from three of the branches 3 to in total three nozzles 7 centrally arranged in the enclosed drawing, said nozzles having a housing and a relatively large nozzle opening 8, for instance 1.5 mm in diameter.
  • each branch 6, i.e. inlet 6, to the nozzles 7 having a relatively large nozzle opening 8 such a spindle is fixed that has a sleeve-like part 9, open at the end adjacent to the inlet 6 and preferably in tightly sliding contact with the inlet 6 wall.
  • Said spindle comprises at least one flow port 10 in the sleeve wall, and a head 11, against which a spring 12 presses or abuts, one end of the spring resting via a filter 13 against the housing of the nozzle 7.
  • the fluid pressure in the inlet 6 is so high, for example 200-300 bar, that the spindle with its head 11 compresses the spring 12, causing the shoulder 16 of the head 11 to detach from a corresponding contact surface 17 in the housing of the spray head 1 and extin ⁇ guishing liquid to flow out via the openings 10, via a circular room 18 between the spindle head 11 and the hous- ing 1, through the filter 13 and between (along) the coils of a helical spring 15 placed around a pin 14 in a helical passage 19 and out through the nozzle opening 8.
  • the fluid pressure in the inlet 6 has decreased, for instance to 70 bar, whereby the spring 12 has overcome the fluid pressure and pressed the spindle head 11 tightly against the housing 1 (surfaces 16 and 17), which causes the liquid passage from the channel 6 to the nozzle opening 8 to be closed, liquid flowing only to the nozzles 4 arranged at the periphery in a circle.
  • the nozzles having a respective relatively large nozzle opening can be arranged to close after the fluid pressure has decreased to a given value within the range of, for example, 50 to 90 bar.

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)
  • Nozzles (AREA)

Abstract

The object of the invention is to provide for a new spray head which can be used to extinguish both large, violent fires and small fires. This is achieved in that the spray head has at least one nozzle (7) having a relatively large nozzle opening (8) in order to produce a powerful liquid fog jet at a high propellant fluid pressure, and several nozzles having a respective considerably smaller nozzle opening in order to produce a fine liquid fog jet, whereby said at least one nozzle (7) having a relatively large nozzle opening (8) is arranged to be closed by a spindle (9, 11) loaded with a spring (12) in the direction of the fluid pressure at a fluid pressure which can be determined in advance.

Description

Spray head
The present invention relates to a spray head having a number of nozzles for spraying liquid fog, said nozzles being positioned in respective housings.
Violent fires, such as oil fires, and, alternatively, relatively small fires, which often are smouldering fires, may occur in, for instance, the engine rooms of ships. To extinguish a violent fire, for example, in a diesel engine, a liquid fog jet with great penetration, i.e. with an ability to penetrate through rising hot air and flue gases down to the actual seat of fire, is at least initially required. The site of a possible violent fire can normally be predicted with a high probability and the required spray heads can be placed at suitable places.
However, a small possibly smouldering fire may break out almost anywhere and the most reliable way to extinguish such a fire is to flood the entire space in question with fine liquid fog, so-called "total flooding".
The object of the invention is to provide for a new spray head which can be used to extinguish both large, violent fires and small fires.
The spray head according to the invention is mainly characterized in that it has at least one nozzle having a relatively large nozzle opening in order to produce a powerful liquid fog jet at a high propellant fluid pressure, several nozzles having a respective considerably smaller nozzle opening in order to produce a fine liquid fog jet, and that said at least one nozzle having a relatively large nozzle opening is arranged to be closed by a spindle loaded with a spring in the direction of the fluid pressure at a fluid pressure which can be determined in advance.
There are preferably several nozzles having a respective relatively large nozzle opening, for instance three such nozzles located centrally in the spray head, whereas the nozzles having a respective considerably smaller nozzle opening, for instance nine in number, are suitably arranged in the periphery in a circle.
The nozzles having a respective relatively large nozzle opening can be arranged to close at a fluid pressure of, for instance, 70 bar. Consequently, at a lower fluid pressure, the spray head sprays liquid fog only via the nozzles having a respective considerably smaller nozzle opening, whereby additional gas can very well be mixed into the liquid fog, for example in accordance with the disclosure of Finnish Patent Applica¬ tion 941,738 or 941,975.
The invention will be described in greater detail in the following with reference to an embodiment illu- strated in the enclosed drawing.
Figure 1 shows a longitudinal section of a spray head.
Figure 2 shows on a larger scale a longitudinal section of a nozzle, in the open state, having a relative- ly large nozzle opening.
Figure 3 shows, like Figure 2, a nozzle, in the closed state, having a relatively large nozzle opening.
The spray head in Figure 1 comprises a housing provided with a central inlet channel 2 for extinguishing liquid. The inlet channel 2 is via branches 3 in contact with nine nozzles 4 arranged in the periphery in a circle in the enclosed drawing, said nozzles having a housing and a relatively small nozzle opening, for instance 0.5 mm in diameter. A further branch 6 extends from three of the branches 3 to in total three nozzles 7 centrally arranged in the enclosed drawing, said nozzles having a housing and a relatively large nozzle opening 8, for instance 1.5 mm in diameter.
In preferably each branch 6, i.e. inlet 6, to the nozzles 7 having a relatively large nozzle opening 8, such a spindle is fixed that has a sleeve-like part 9, open at the end adjacent to the inlet 6 and preferably in tightly sliding contact with the inlet 6 wall. Said spindle comprises at least one flow port 10 in the sleeve wall, and a head 11, against which a spring 12 presses or abuts, one end of the spring resting via a filter 13 against the housing of the nozzle 7.
In Figure 2, the fluid pressure in the inlet 6 is so high, for example 200-300 bar, that the spindle with its head 11 compresses the spring 12, causing the shoulder 16 of the head 11 to detach from a corresponding contact surface 17 in the housing of the spray head 1 and extin¬ guishing liquid to flow out via the openings 10, via a circular room 18 between the spindle head 11 and the hous- ing 1, through the filter 13 and between (along) the coils of a helical spring 15 placed around a pin 14 in a helical passage 19 and out through the nozzle opening 8.
In Figure 3, the fluid pressure in the inlet 6 has decreased, for instance to 70 bar, whereby the spring 12 has overcome the fluid pressure and pressed the spindle head 11 tightly against the housing 1 (surfaces 16 and 17), which causes the liquid passage from the channel 6 to the nozzle opening 8 to be closed, liquid flowing only to the nozzles 4 arranged at the periphery in a circle. The nozzles having a respective relatively large nozzle opening can be arranged to close after the fluid pressure has decreased to a given value within the range of, for example, 50 to 90 bar.

Claims

Claims
1. A spray head having a number of nozzles for spraying liquid fog, said nozzles being positioned in respective housings, c h a r a c t e r i z e d in that it has at least one nozzle (7) a having housing and a relatively large nozzle opening (8) in order to produce a powerful liquid fog jet at a high propellant fluid pressure, several nozzles (4) having a respective considerably smaller nozzle opening (5) in order to produce a fine liquid fog jet, and that said at least one nozzle (7) having a rela- tively large nozzle opening (8) is arranged to be closed by a spindle (9, 11) loaded with a spring (12) in the direction of the fluid pressure at a fluid pressure which can be determined in advance.
2. A spray head according to claim 1, c h a r a c t e r i z e d in that it has several nozzles
(7) having a respective relatively large nozzle opening (8), located centrally in the spray head, whereas the nozzles (4) having a respective considerably smaller nozzle opening (5) are arranged in the periphery in a circle.
3. A spray head according to claims 1 or 2, c h a r a c t e r i z e d in that the nozzles (7) having a respective relatively large nozzle opening (8) are arranged to close at a fluid pressure of 50 to 90 bar.
4. A spray head according to claim 1, c h a r a c t e r i z e d in that the spindle (9, 11) has a sleeve-like part (9) positioned in a liquid inlet (6) of the nozzle (4) having a considerably smaller nozzle opening, said sleeve-like part being open at the end adjacent to the inlet (6) for the liquid and preferably in tightly sliding contact with the inlet (6) wall, whereby the sleeve wall has at least one flow port (10) and the sleeve-like part comprises a head (11) against which a spring (12) abuts, one end of the spring resting against the housing of the nozzle (7) having a relatively large nozzle opening (8).
5. A spray head according to claim 1, c h a r a c t e r i z e d in that the spindle head (11) has a shoulder surface (16) in tight contact with the corresponding surface (17) in the housing (1) of the spray head.
PCT/FI1995/000393 1994-07-07 1995-07-06 Spray head WO1996001666A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28889/95A AU2888995A (en) 1994-07-07 1995-07-06 Spray head

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI943243 1994-07-07
FI943243A FI96174C (en) 1994-07-07 1994-07-07 The spray head

Publications (1)

Publication Number Publication Date
WO1996001666A1 true WO1996001666A1 (en) 1996-01-25

Family

ID=8541070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1995/000393 WO1996001666A1 (en) 1994-07-07 1995-07-06 Spray head

Country Status (3)

Country Link
AU (1) AU2888995A (en)
FI (1) FI96174C (en)
WO (1) WO1996001666A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058705A1 (en) * 1997-06-13 1998-12-30 Sundholm Goeran Nozzle and fire fighting installation
GB2357431A (en) * 1999-12-22 2001-06-27 Goeran Sundholm Spray head useful in fire extinguishing
EP1582264A1 (en) * 2004-04-01 2005-10-05 Spray Nozzle Engineering Pty. Limited Check valve
WO2006009337A1 (en) * 2004-07-16 2006-01-26 Tank Tech Co.,Ltd. Spray device for fire fighting
WO2008037846A1 (en) * 2006-09-26 2008-04-03 Marioff Corporation Oy Spraying head, spraying apparatus and method for fire extinguishing
US7878419B2 (en) 2006-09-19 2011-02-01 Sta-Rite Industries, Llc Spray head with covers
US8596560B2 (en) 2007-08-02 2013-12-03 Stuart Morgan Check valve
CN114502221A (en) * 2019-10-04 2022-05-13 爱惜康股份有限公司 Spray device with side-by-side spray tip for dispensing two fluids that react together chemically
US20230044995A1 (en) * 2019-06-03 2023-02-09 Minimax Viking Research & Development Gmbh Firefighting system for an extractor duct, in particular of a cooking zone

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015370A1 (en) * 1991-02-28 1992-09-17 Sundholm Goeran Spray-head for fighting fire
WO1992020453A1 (en) * 1991-05-20 1992-11-26 Sundholm Goeran Fire fighting equipment
WO1994006567A1 (en) * 1992-09-15 1994-03-31 Sundholm Goeran Nozzle with helical spring which sets liquid in whirling motion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015370A1 (en) * 1991-02-28 1992-09-17 Sundholm Goeran Spray-head for fighting fire
WO1992020453A1 (en) * 1991-05-20 1992-11-26 Sundholm Goeran Fire fighting equipment
WO1994006567A1 (en) * 1992-09-15 1994-03-31 Sundholm Goeran Nozzle with helical spring which sets liquid in whirling motion
WO1994006517A1 (en) * 1992-09-15 1994-03-31 Sundholm Goeran Method and device for fire extinguishing by alternating a liquid fog and a liquid jet

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058705A1 (en) * 1997-06-13 1998-12-30 Sundholm Goeran Nozzle and fire fighting installation
AU726214B2 (en) * 1997-06-13 2000-11-02 Marioff Corporation Oy Nozzle and fire fighting installation
AU726214C (en) * 1997-06-13 2001-08-09 Marioff Corporation Oy Nozzle and fire fighting installation
US6279663B1 (en) 1997-06-13 2001-08-28 Sundholm Goeran Nozzle and fire fighting installation
GB2357431A (en) * 1999-12-22 2001-06-27 Goeran Sundholm Spray head useful in fire extinguishing
US6318474B1 (en) 1999-12-22 2001-11-20 Sundholm Goeran Spray head
GB2357431B (en) * 1999-12-22 2003-11-26 Goeran Sundholm Spray head
EP1582264A1 (en) * 2004-04-01 2005-10-05 Spray Nozzle Engineering Pty. Limited Check valve
WO2006009337A1 (en) * 2004-07-16 2006-01-26 Tank Tech Co.,Ltd. Spray device for fire fighting
US7878419B2 (en) 2006-09-19 2011-02-01 Sta-Rite Industries, Llc Spray head with covers
WO2008037846A1 (en) * 2006-09-26 2008-04-03 Marioff Corporation Oy Spraying head, spraying apparatus and method for fire extinguishing
JP2010504184A (en) * 2006-09-26 2010-02-12 マリオフ コーポレーション オーワイ Spray head, spray device and fire extinguishing method
AU2007301848B2 (en) * 2006-09-26 2013-05-23 Marioff Corporation Oy Spraying head, spraying apparatus and method for fire extinguishing
US9016393B2 (en) 2006-09-26 2015-04-28 Marioff Corporation Oy Spraying head, spraying apparatus and method for fire extinguishing
US8596560B2 (en) 2007-08-02 2013-12-03 Stuart Morgan Check valve
US20230044995A1 (en) * 2019-06-03 2023-02-09 Minimax Viking Research & Development Gmbh Firefighting system for an extractor duct, in particular of a cooking zone
CN114502221A (en) * 2019-10-04 2022-05-13 爱惜康股份有限公司 Spray device with side-by-side spray tip for dispensing two fluids that react together chemically

Also Published As

Publication number Publication date
FI96174C (en) 1996-05-27
FI96174B (en) 1996-02-15
AU2888995A (en) 1996-02-09
FI943243A0 (en) 1994-07-07

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