Installation for fighting fire

• US 6,415,871 B2
• Filed: 03/27/2001
• Issued: 07/09/2002
• Est. Priority Date: 10/08/1999
• Status: Expired due to Fees

• Current Assignee: Marioff Corporation Oy (Carrier Global Corporation)
• Original Assignee: Marioff Corporation Oy (Carrier Global Corporation)
• Inventors: Sundholm, Göran
• Primary Examiner(s): Ganey, Steven J.
• Application Number:
  US09/818,233
• Publication Number:
  US 20010037885A1
• Time in Patent Office: 469 Days
• Field of Search: 169/16, 169/37, 169/54, 169/55, 169/62, 169/64, 239/548, 239/556, 239/559
• US Class Current: 169/54
• CPC Class Codes: A62C 3/0221 for tunnels
• CPC Class Codes: A62C 3/0292 by spraying extinguishants directly into the fire A62C3/0242 takes precedence
• CPC Class Codes: A62C 3/07 in vehicles, e.g. in road vehicles

Abstract

The invention relates to an installation for fighting fire in a space; the installation comprising a first spray head which is placed in the space close to a first longitudinal side wall and obliquely directed downwards at an angle of 40 to 70° in relation to a vertical plane and a second spray head which is placed in the space close to a second longitudinal side wall opposite the first side wall and obliquely directed downwards at an angle of 40 to 70° in relation to the vertical plane. In order to fight a fire efficiently in a the space, the installation comprises a high pressure drive source for feeding water based extinguishing medium; and the spray heads are placed at a height of 3,2 to 4 m above the floor of the space and arranged to spray at a spread angle of 45 to 120°.

Claims

1. An installation for fighting fire in a space, the space being bounded by a first longitudinal side wall;

the installation comprising at least two spray heads whereof the first spray head is placed in the space close to the first longitudinal side wall and obliquely directed downwards at an angle of 40 to 70°

in relation to a vertical plane and the and the second spray head is placed in the space close to a second longitudinal side wall of the space opposite the first side wall and obliquely directed downwards at an angle of 40 to 70°

in relation to the vertical plane, and a drive source for feeding extinguishing medium to said at least two spray heads, wherein

-the drive source is a high pressure drive source for feeding the extinguishing medium at a pressure of at least 15 bar,

-the extinguishing medium is a water-based extinguishing medium, and

-said two spray heads are placed at a height of 3,2 to 4 m above the floor of the space and arranged to spray water-based extinguishing medium at a spread angle of 45 to 120° and

comprise at least two nozzles which are placed and directed in such a way that the spray heads at high pressure provide, in the direction in which the spray heads are directed, a mist-like spray with strong penetration power, and a suction at the respective spray head for sucking in flue gases into the spray of extinguishing medium and for enhancing the vaporization of the extinguishing medium.

2. An installation as claimed in claim 1, wherein the spray heads are at least mainly directed against each other, and are thus arranged to spray away from the respective side wall close to which the spray heads are placed.

3. An installation as claimed in claim 2, wherein the area close to the side walls of the space and at a height of 0,5 to 3 m above the floor of the space is free from spray heads.

4. An installation as claimed in claim 1, wherein the spray heads are directed at an angle of 45 to 60°

in relation to the vertical plane.

5. An installation as claimed in claim 4, wherein the area close to the side walls of the space and at a height of 0,5 to 3 m above the floor of the space is free from spray heads.

6. An installation as claimed in claim 1, wherein the spray heads are placed at a height of 3,4 to 3,8 m above the floor of the space.

7. An installation as claimed in claim 6, wherein the area close to the side walls of the space and at a height of 0,5 to 3 m above the floor of the space is free from spray heads.

8. An installation as claimed in claim 1, wherein the spray heads are arranged to spray at a spread angle of 90 to 120°

.

9. An installation as claimed in claim 8, wherein the area close to the side walls of the space and at a height of 0,5 to 3 m above the floor of the space is free from spray heads.

10. An installation as claimed in claim 1, wherein the spray heads are arranged to deliver extinguishing medium in an area extending from a lower peripheral area, which mainly extends straight downwards towards the floor of the space, to an upper peripheral area, which mainly extends horizontally regarding the floor of the space.

11. An installation as claimed in claim 10, wherein the upper peripheral area extends maximally about 30°

upwards regarding the floor level.

12. An installation as claimed in claim 10, and comprising several spray heads extending in the longitudinal direction of the railway carriage placed along both side walls of the space.

13. An installation as claimed in claim 1, wherein the spray heads comprise a central nozzle which is surrounded by a plurality of obliquely placed nozzles.

14. An installation as claimed in claim 1, wherein the area close to the side walls of the space and at a height of 0,5 to 3 m above the floor of the space is free from spray heads.

15. An installation as claimed in claim 14, wherein the width of the space is 3 to 5 m.

16. An installation as claimed in claim 15, wherein the space is a railway carriage.

17. An installation as claimed in claim 1, wherein the space is a railway carriage for transportation of lorries and/or trailers.

18. An installation for fighting fire in a tunnel, said installation comprising a high pressure drive source containing water-based extinguishing medium, and at lest two spray heads, said drive source being adapted to feed water-based extinguishing medium to the spray heads, whereof the first spray head is placed close to a first longitudinal side wall of the tunnel and obliquely directed downwards at an angle of 40 to 70°

in relation to a vertical plane, and the second spray head is placed close to a second longitudinal side wall of the tunnel opposite the first side wall and obliquely directed downwards at an angle of 40 to 70°

in relation to the vertical plane, the spray heads being placed at a height of 3.2 to 4 m above the floor level of the tunnel and arranged to spray water-based extinguishing medium at a a spread angle of 45 to 120°

.

19. An installation as claimed in claim 18, wherein the spray heads comprise at least two nozzles which are placed and directed in such a way that the spray heads at high pressure provide, in the direction in which the spray heads are directed, a mist-like spray with strong penetration power, and a suction at the respective spray head for sucking in flue gases into the spray of extinguishing medium and for enhancing the vaporization of the extinguishing medium.

20. An installation as claimed in claim 18, wherein the tunnel is a car or train tunnel.