Oxygen absorbing fire suppression system

• US 20080078563A1
• Filed: 10/02/2006
• Published: 04/03/2008
• Est. Priority Date: 10/02/2006
• Status: Abandoned Application

• Current Assignee: Tyco Fire Products LP (Johnson Controls International plc)
• Original Assignee: Ansul, Inc. (Johnson Controls International plc)
• Inventors: Leonhardt, Thomas, Hock, Quek-Cheng, Zhang, Guobi
• Application Number:
  US11/541,743
• Publication Number:
  US 20080078563A1
• Time in Patent Office: Days
• US Class Current: 169/49
• CPC Class Codes: A62C 99/0018 using gases or vapours that do not support combustion, e.g. steam, carbon dioxide

Abstract

An oxygen absorbing fire suppression system comprises oxygen absorbing material for absorbing oxygen from ambient air within an enclosed space. A housing prevents the oxygen absorbing material from exposure to the ambient air outside the housing. The housing has at least one opening for exposing the oxygen absorbing material to the ambient air, and at least one seal is provided proximate the at least one opening to prevent the oxygen absorbing material from exposure to the ambient air. An actuating component removes at least a portion of the at least one seal to expose the oxygen absorbing material to the ambient air. The oxygen absorbing material is configured to lower an oxygen concentration within the enclosed space to a level that extinguishes fire.

Claims

1. An oxygen absorbing fire suppression system, comprising:

oxygen absorbing material for absorbing oxygen from ambient air within an enclosed space;

a housing preventing the oxygen absorbing material from exposure to the ambient air outside the housing, the housing having at least one opening for exposing the oxygen absorbing material to the ambient air;

at least one seal provided proximate the at least one opening to prevent the oxygen absorbing material from exposure to the ambient air; and

an actuating component for removing at least a portion of the at least one seal to expose the oxygen absorbing material to the ambient air, the oxygen absorbing material being configured to lower an oxygen concentration within the enclosed space to a level that extinguishes fire.

2. The system of claim 1, the at least one opening further comprising an air inlet and an air outlet, the at least one seal further comprising first and second seals provided proximate the air inlet and the air outlet, respectively, to prevent the oxygen absorbing material from exposure to the ambient air, the actuating component releasing the first and second seals to open the air inlet and the air outlet to expose the oxygen absorbing material to the ambient air.

3. The system of claim 1, wherein the oxygen absorbing material is configured to absorb oxygen at a first rate, the system further comprising:

an inert gas cylinder holding inert gas under pressure; and

an actuator/valve assembly interconnected with the inert gas cylinder, the actuator/valve assembly releasing a pressurized gas flow of inert gas into the enclosed space at a second rate configured to replace the oxygen being absorbed at the first rate.

4. The system of claim 1, further comprising a container holding an inert gas under pressure and configured to supply the inert gas to the enclosed space, the container being located at one of within the enclosed space, remote from the enclosed space, and proximate the housing.

5. The system of claim 1, wherein the oxygen absorbing material has a surface area based on at least one of a volume of air within the enclosed space, a rate of a pressurized gas flow of inert gas provided to the enclosed space, a volume of an inert gas provided to the enclosed space, a rate at which oxygen absorption is desired, and a final percentage of oxygen desired within the enclosed space.

6. The system of claim 1, further comprising a fan blowing the ambient air through the housing, the oxygen absorbing material absorbing oxygen from the ambient air.

7. The system of claim 1, further comprising:

an inert gas cylinder holding inert gas under pressure;

an actuator/valve assembly interconnected with the inert gas cylinder, the actuator/valve assembly releasing a pressurized gas flow of inert gas from the inert gas cylinder, the pressurized gas flow entering the housing through the at least one opening; and

a fan driven by the pressurized gas flow, the fan pulling the ambient air into the housing through the at least one opening.

8. The system of claim 1, further comprising:

a fan pulling ambient air through the at least one opening of the housing; and

a controller turning the fan on for a predetermined amount of time, the controller turning the fan off after the predetermined amount of time.

9. A method for extinguishing a fire within an enclosed space, comprising:

providing oxygen absorbing material within a housing, the housing having at least one opening provided with a seal, the housing and seal preventing the oxygen absorbing material from exposure to ambient air within an enclosed space;

opening the at least one opening within the housing to expose the oxygen absorbing material to the ambient air within the enclosed space; and

absorbing oxygen from the ambient air within the enclosed space with the oxygen absorbing material, the oxygen absorbing material being configured to lower an oxygen concentration within the enclosed space to a level that extinguishes fire.

10. The method of claim 9, wherein the at least one opening further comprises an air inlet and an air outlet, the opening step further comprising opening the air inlet and the air outlet, the method further comprising pulling the ambient air from the enclosed space into the housing through the air inlet, the ambient air contacting the oxygen absorbing material to form oxygen-reduced air, the oxygen-reduced air flowing to the enclosed space through the air outlet.

11. The method of claim 9, further comprising blowing a pressurized gas flow of inert gas into the at least one opening, the pressurized gas flow pulling the ambient air into the at least one opening from the enclosed space.

12. The method of claim 9, further comprising:

absorbing oxygen from the ambient air within the enclosed space at a first rate; and

supplying an inert gas to the enclosed space at a second rate based on the first rate.

13. The method of claim 9, further comprising:

turning on a fan for a predetermined amount of time, the fan pulling ambient air into the housing from the enclosed space; and

turning the fan off after the predetermined amount of time.

14. A system for replacing oxygen with an inert gas within an enclosed space, comprising:

oxygen absorbing material for absorbing oxygen from ambient air within an enclosed space;

an oxygen absorber unit holding the oxygen absorbing material, the oxygen absorber unit having an air inlet allowing ambient air to enter the oxygen absorber unit and an air outlet for outputting oxygen-reduced air, wherein the air inlet and the air outlet are interconnected with the enclosed space;

means for preventing the ambient air and the oxygen absorbing material from being in contact with one another; and

means for pulling ambient air into the oxygen absorber unit through the air inlet from the enclosed space, the oxygen absorbing material being configured to lower an oxygen concentration within the enclosed space to a level that extinguishes fire.

15. The system of claim 14, further comprising:

a pressurized gas flow of inert gas; and

means for delivering the pressurized gas flow of inert gas to the air inlet.

16. The system of claim 14, further comprising:

first and second flaps for sealing the air inlet and the air outlet, respectively; and

an actuating component releasing the first and second flaps to open the air inlet and the air outlet to expose the oxygen absorbing material to the ambient air.

17. The system of claim 14, wherein the oxygen absorbing material coats at least one of a honeycomb structure and blades.

18. The system of claim 14, further comprising:

at least one of a controller and a control module receiving an oxygen absorber unit activation signal; and

actuating means for exposing the oxygen absorbing material to ambient air, the at least one of a controller and a control module activating the actuating means after receiving the oxygen absorber unit activation signal.

19. The system of claim 14, further comprising:

a pressurized gas flow of inert gas; and

a fan driven by the pressurized gas flow, the fan pulling the ambient air into the oxygen absorber housing through the air inlet.

20. The system of claim 14, further comprising a fan configured to pull ambient air into the oxygen absorber unit.