Expulsion of a fire suppressant from a container

Patent metadata

Field	Value
Publication number	US-10238902-B2
Application number	US-201615258726-A
Country	US
Kind code	B2
Filing date	Sep 7, 2016
Priority date	Sep 7, 2016
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

Disclosed herein is an example method for expelling a fire suppressant from a container into a distribution manifold. The method includes generating a propellant gas that flows into the container via a first port of the container, thereby causing a pressure within the container to increase. The container includes the fire suppressant prior to the generation of the propellant gas. The method further includes, in response to the pressure within the container exceeding a threshold pressure, expelling the fire suppressant from a second port of the container into the distribution manifold. The generated propellant gas continues to flow into the container via the first port at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container via the second port. Example fire suppression systems are also disclosed herein.

First claim

What is claimed is:

1. A method for expelling a fire suppressant from a container into a distribution manifold, the method comprising: generating a propellant gas that flows into the container via a first port of the container, thereby causing a pressure within the container to increase, wherein the container includes the fire suppressant prior to the generation of the propellant gas; in response to the pressure within the container exceeding a threshold pressure, expelling the fire suppressant from a second port of the container into the distribution manifold, wherein the generated propellant gas continues to flow into the container via the first port at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container via the second port; and causing the pressure within the container to remain greater than or equal to the threshold pressure at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container, wherein expelling the fire suppressant from the second port of the container into the distribution manifold comprises rupturing a disc that seals the second port in response to the pressure within the container exceeding the threshold pressure.

2. The method of claim 1 , wherein generating the propellant gas comprises generating the propellant gas via a gas generator initiating a chemical reaction of one or more precursors of the propellant gas.

3. The method of claim 2 , further comprising:
receiving, at the gas generator, an input,
wherein generating the propellant gas comprises generating the propellant gas in response to receiving the input at the gas generator.

4. The method of claim 3 , wherein receiving the input comprises receiving the input from a heat detector, a smoke detector, or a user interface.

5. The method of claim 1 , wherein causing the pressure within the container to remain greater than or equal to the threshold pressure comprises causing the pressure within the container to remain greater than or equal to the threshold pressure after rupturing the disc.

6. The method of claim 1 ,
wherein prior to the generation of the propellant gas, a second propellant gas is included within the container, the method further comprising:
monitoring, via a pressure gauge, the pressure within the container generated at least in part by the second propellant gas.

7. The method of claim 1 , wherein expelling the fire suppressant comprises expelling the fire suppressant in response to the pressure within the container exceeding a pressure within a range of 900 pounds per square inch gauge (psig) and 1100 psig.

8. The method of claim 1 , wherein expelling the fire suppressant comprises expelling the fire suppressant in response to the pressure within the container exceeding a pressure that is substantially equal to 1000 pounds per square inch gauge (psig).

9. The method of claim 1 , further comprising:
flowing the expelled fire suppressant through the distribution manifold in a liquid phase and;
dispensing the expelled fire suppressant from the distribution manifold in the liquid phase.

10. The method of claim 1 , further comprising reducing the pressure within the container to be less than the threshold pressure after substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container.

11. A fire suppression system comprising:
a container including a fire suppressant, wherein the container comprises a first port and a second port;
a gas generator coupled to the first port, wherein the gas generator is configured to generate and flow a propellant gas into the container via the first port, thereby causing a pressure within the container to increase, the container including the fire suppressant prior to generation of the propellant gas;
a distribution manifold coupled to the second port;
a disc sealing the second port, wherein the disc is configured to (a) rupture in response to the pressure within the container exceeding a threshold pressure and (b) in response to the rupture, release the fire suppressant from the second port into the distribution manifold,
wherein the generated propellant gas is configured to flow into the container via the first port at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container via the second port, and
wherein the generated propellant gas is configured to cause the pressure within the container to remain greater than or equal to the threshold pressure at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container.

12. The fire suppression system of claim 11 , further comprising a control unit, wherein the control unit is configured to (a) detect conditions indicative of a presence of a fire and (b) in response to the detected conditions, send an input to the gas generator to cause the gas generator to generate the propellant gas.

13. The fire suppression system of claim 11 , further comprising a user interface that is configured to (a) receive user input and (b) in response to receiving the user input, send a control input to the gas generator to cause the gas generator to generate the propellant gas.

14. The fire suppression system of claim 11 , wherein the gas generator is configured to generate the propellant gas by initiating a chemical reaction of one or more precursors of the propellant gas.

15. The fire suppression system of claim 11 ,
wherein the container also includes a second propellant gas, the fire suppression system further comprising:
a pressure gauge configured to monitor the pressure within the container generated at least in part by the second propellant gas.

16. The fire suppression system of claim 11 , wherein at least 60% and no more than 80% of a total volume of the container is filled with the fire suppressant.

17. The fire suppression system of claim 11 , wherein the disc is configured to rupture in response to the pressure within the container exceeding a pressure within a range of 900 pounds per square inch gauge (psig) to 1100 psig.

18. A fire suppression system comprising:
a container including a fire suppressant, wherein the container comprises a first port and a second port;
a gas generator coupled to the first port, wherein the gas generator is configured to generate and flow a propellant gas into the container via the first port, thereby causing a pressure within the container to increase, the container including the fire suppressant prior to generation of the propellant gas;
a distribution manifold coupled to the second port;
a disc sealing the second port, wherein the disc is configured to (a) rupture in response to the pressure within the container exceeding a threshold pressure and (b) in response to the rupture, release the fire suppressant from the second port into the distribution manifold; and
a user interface that is configured to (a) receive user input and (b) in response to receiving the user input, send a control input to the gas generator to cause the gas generator to generate the propellant gas,
wherein at least 60% and no more than 80% of a total volume of the container is filled with the fire suppressant,
wherein the generated propellant gas is configured to flow into the container via the

Assignees

• Boeing Co

Inventors

• Wright Robert S

Classifications

• A62C35/023 Primary

  the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas (for foam generation A62C5/02) · CPC title

• A62C13/003

  Extinguishers with spraying and projection of extinguishing agents by pressurised gas · CPC title

• F16K17/403

  with a fracturing valve member · CPC title

• A62C31/28

  Accessories for delivery devices, e.g. supports · CPC title

• A62C3/07

  in vehicles, e.g. in road vehicles · CPC title