Multi-stage inertization process for preventing and extinguishing fires within enclosed spaces
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A62C-002/00
A62C-002/24
A62C-003/00
A62C-035/00
A62C-037/00
A62C-037/36
출원번호
UP-0870871
(2007-10-11)
등록번호
US-7726410
(2010-06-22)
우선권정보
EP-06122142(2006-10-11)
발명자
/ 주소
Wagner, Ernst-Werner
출원인 / 주소
Amrona AG
대리인 / 주소
Fraser Clemens Martin & Miller LLC
인용정보
피인용 횟수 :
1인용 특허 :
2
초록▼
The present invention relates to an inertization process for decreasing a risk of fire and for extinguishing fires in a protected room, wherein an oxygen concentration in the protected room is first lowered to a specific base inertization level, and wherein the oxygen concentration in the protected
The present invention relates to an inertization process for decreasing a risk of fire and for extinguishing fires in a protected room, wherein an oxygen concentration in the protected room is first lowered to a specific base inertization level, and wherein the oxygen concentration in the protected room is maintained at the base inertization level. In the event of a fire, additional inert gas is introduced based upon the extent of the fire in the protected room to further decrease from the base inertization level to a first lowered level. The oxygen concentration is maintained at the first lowered level for a first preset time interval, and further decreased from the first lowered level to a full inertization level, if the fire has not yet been extinguished once the first preset time interval has elapsed.
대표청구항▼
What is claimed is: 1. An inertization process for reducing a risk of a fire and for extinguishing a fire in a protected room, the process comprising the steps of: decreasing an oxygen concentration in the protected room to a desired base inertization level; maintaining the oxygen concentration in
What is claimed is: 1. An inertization process for reducing a risk of a fire and for extinguishing a fire in a protected room, the process comprising the steps of: decreasing an oxygen concentration in the protected room to a desired base inertization level; maintaining the oxygen concentration in the protected room at the base inertization level; decreasing the oxygen concentration in the protected room from the base inertization level to a first lowered level in the event of a fire in the protected room; maintaining the oxygen concentration in the protected room at the first lowered level for a first preset time interval; and decreasing the oxygen concentration in the protected room from the first lowered level to a full inertization level if a fire in the protected room has not been extinguished by the time the first preset time interval has elapsed. 2. The inertization process according to claim 1, further comprising the steps of: decreasing the oxygen concentration in the protected room from the first lowered level to a second lowered level if the fire has not been extinguished by the time the first preset time interval has elapsed; maintaining the oxygen concentration in the protected room at the second lowered level for a second preset time interval; and decreasing the oxygen concentration in the protected room from the second lowered level to the full inertization level if the fire has not been extinguished by the time the second preset time interval has elapsed. 3. The inertization process according to claim 2, wherein once one of the first and the second preset time intervals has elapsed, the oxygen concentration in the protected room is raised to the base inertization level if the fire in the protected room has been extinguished by the time the one of the first and second preset time interval has elapsed. 4. The inertization process according to claim 2, wherein once one of the first and the second preset time intervals has elapsed, the oxygen concentration in the protected room is manually raised to the base inertization level. 5. The inertization process according to claim 2, wherein the oxygen concentration at the second lowered level is selected based upon an extinguishing threshold of a fire load present in the protected room. 6. The inertization process according to claim 5, wherein the oxygen concentration at the second lowered level is lower than the oxygen concentration that corresponds to the extinguishing threshold of the fire load present in the protected room. 7. The inertization process according claim 2, wherein the oxygen concentration is measured in the protected room and is maintained at one of the base inertization level, the first lowered level, the second lowered level, and the full inertization level with at least one of a controlled supply of an inert gas, oxygen, and air. 8. The inertization process according to claim 2, further comprising the step of measuring multiple characteristic fire values in the protected room to determine what flammable material is burning in the protected room. 9. The inertization process according to claim 8, wherein at least one of the first and the second lowered level is selected based upon at least one of an ignition threshold and an extinguishing threshold of the determined flammable material. 10. The inertization process according to claim 8, wherein at least one of the characteristic fire values is quantitatively measured, and wherein the oxygen concentration in the protected room is decreased to at least one of the first lowered level, the second lowered level, and the full inertization level based upon the quantitatively measured characteristic fire value. 11. The inertization process according to claim 8, wherein at least one of the characteristic fire values is quantitatively measured, and wherein the oxygen concentration in the protected room is maintained at least one of the first lowered level and the second lowered level for a period of time based upon the quantitatively measured characteristic fire value. 12. The inertization process according to claim 1, further comprising the step of maintaining the full inertization level in the protected room at least until the fire in the protected room has been extinguished. 13. The inertization process according to claim 1, wherein once the first preset time interval has elapsed, the oxygen concentration in the protected room is raised to the base inertization level if the fire in the protected room has been extinguished by the time the first preset time interval has elapsed. 14. The inertization process according to claim 1, wherein the oxygen concentration at the first lowered level is selected based upon an ignition threshold of a fire load present in the protected room. 15. The inertization process according to claim 14, wherein the oxygen concentration at the first lowered level is substantially equal to the oxygen concentration that corresponds to the ignition threshold of the fire load present in the protected room. 16. The inertization process according to claim 1, further comprising the step of measuring at least one characteristic fire value in the protected room to determine whether a fire is burning in the protected room. 17. The inertization process according to claim 1, further comprising the steps of: measuring a plurality of characteristic fire values in the protected room to determine whether a fire is burning in the protected room; and measuring a plurality of threshold values for the characteristic fire values measured in the protected room, wherein the determination whether a fire is burning in the protected room is based upon at least one of the measured levels of characteristic fire values and the threshold values for the characteristic fire values measured in the protected room. 18. An inertization process for reducing a risk of a fire and for extinguishing a fire in a protected room, the process comprising the steps of: decreasing an oxygen concentration in the protected room to a desired base inertization level; maintaining the oxygen concentration in the protected room at the base inertization level; decreasing the oxygen concentration in the protected room from the base inertization level to a first lowered level in the event of a fire in the protected room; maintaining the oxygen concentration in the protected room at the first lowered level for a first preset time interval; and decreasing the oxygen concentration in the protected room from the first lowered level to a second lowered level if the fire has not been extinguished by the time the first preset time interval has elapsed; maintaining the oxygen concentration in the protected room at the second lowered level for a second preset time interval; and decreasing the oxygen concentration in the protected room from the second lowered level to a full inertization level if the fire has not been extinguished by the time the second preset time interval has elapsed. 19. The inertization process according claim 18, wherein the oxygen concentration is measured in the protected room and is maintained at one of the base inertization level, the first lowered level, the second lowered level, and the full inertization level with at least one of a controlled supply of an inert gas, oxygen, and air. 20. An inertization process for a protected room, the process comprising the steps of: decreasing an oxygen concentration in the protected room to a desired base inertization level; maintaining the oxygen concentration in the protected room at the base inertization level; measuring at least one characteristic fire value in the protected room to determine at least one of whether a fire is burning in the protected room and what flammable material is burning in the protected room; decreasing the oxygen concentration in the protected room from the base inertization level to a first lowered level in the event of a fire is burning in the protected room; maintaining the oxygen concentration in the protected room at the first lowered level for a first preset time interval; and decreasing the oxygen concentration in the protected room from the first lowered level to a second lowered level if the fire has not been extinguished by the time the first preset time interval has elapsed; maintaining the oxygen concentration in the protected room at the second lowered level for a second preset time interval; and decreasing the oxygen concentration in the protected room from the second lowered level to a full inertization level if the fire has not been extinguished by the time the second preset time interval has elapsed.
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이 특허에 인용된 특허 (2)
Wagner, Ernst Werner; Schütte, Volker, Inerting method and apparatus for preventing and extinguishing fires in enclosed spaces.
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