Dynamic fire suppression system and method i'hereof
11406855 · 2022-08-09
Assignee
Inventors
Cpc classification
A62C13/64
HUMAN NECESSITIES
A62C35/023
HUMAN NECESSITIES
A62C13/003
HUMAN NECESSITIES
A62C37/42
HUMAN NECESSITIES
A62C37/50
HUMAN NECESSITIES
International classification
A62C13/64
HUMAN NECESSITIES
A62C13/00
HUMAN NECESSITIES
A62C37/42
HUMAN NECESSITIES
A62C35/02
HUMAN NECESSITIES
A62C37/40
HUMAN NECESSITIES
A62C37/36
HUMAN NECESSITIES
Abstract
A fire suppression system having a first triggering mechanism capable of being remotely triggered in response to a fire condition and a second manual triggering mechanism. More particularly, the fire extinguisher includes a valve for a fire extinguisher capable of manual and automatic operation. The system further includes a mechanism to notify of inoperable local status. During automatic operation, the system can be being triggered by a control panel in electrical communication, such as in response to a signal from smoke detectors. This system may also be manually triggered or in response to a temperature threshold sensor or other sensors. The valve includes an actuator that provides a separate area to place a safety pin for storing securely, and which provides feedback to the control system that the safety pin is properly stored and therefore, the fire extinguisher is active.
Claims
1. A pre-engineered fire suppression system configured to release pressurized material to extinguish fires, said pre-engineered fire suppression system comprising: a control panel; a sensor capable of detecting a fire condition and in communication with said control panel; at least one fire extinguishing unit in communication with said control panel and including an activation device coupled to a tank capable of holding the pressurized material and wherein said activation device includes a first triggering mechanism capable of being triggered by said control panel and a second manual triggering mechanism; a lock pin and a lock pin recess on said activation device and wherein when said lock pin is inserted into said lock pin recess, said first and second triggering mechanisms are immobilized; and a lock pin retention mechanism including a lock pin status sensor in communication with said control panel.
2. The pre-engineered fire suppression system of claim 1 wherein said activation device includes a valve body portion having said lock pin receiving recess, and an activation portion, and wherein said activation device also includes said lock pin retention mechanism.
3. The pre-engineered fire suppression system of claim 2 wherein said lock pin recess on said valve portion upon receiving said lock pin is configured to prevent releasing of the pressurized material from said tank.
4. The pre-engineered fire suppression system of claim 1 wherein said lock pin retention mechanism includes a magnet configured to magnetize said lock pin when said lock pin is received in said lock pin retention mechanism.
5. The pre-engineered fire suppression system of claim 4 wherein said lock pin status sensor is a reed switch, triggered when said lock pin is magnetized by said magnet.
6. The pre-engineered fire suppression system of claim 4 wherein said magnet secures said lock pin in said recess and lock pin status sensor communicates a ready and active signal upon stowing of said lock pin in said lock pin retention mechanism to said control panel.
7. The pre-engineered fire suppression system of claim 4 wherein said lock pin status sensor communicates a fault signal to said control panel when no lock pin is stowed in said lock pin retention mechanism.
8. The pre-engineered fire suppression system of claim 1, further including a third triggering mechanism, in addition to the frst and second triggering mechanisms.
9. The pre-engineered fire suppression system of claim 8 wherein said third release mechanism is a glycerin bulb configured to shatter upon reaching a set temperature condition.
10. The pre-engineered fire suppression system of claim 1 further including an activation portion and a valve portion and a lever mechanism extending between said activation portion and said valve portion and wherein said valve portion includes a valve body and a valve movable between an open position and a closed position relative to said valve body.
11. The pre-engineered fire suppression system of claim 10 wherein said lever mechanism includes a valve lever coupled to an actuation lever.
12. The pre-engineered fire suppression system of claim 11 wherein said actuation lever is coupled to said second manual triggering mechanism.
13. The pre-engineered fire suppression system of claim 12 wherein said second manual triggering mechanism is a pull loop on said actuation lever.
14. The pre-engineered fire suppression system of claim 12 wherein said second manual triggering mechanism is a pull cable coupled to said actuation lever.
15. The pre-engineered fire suppression system of claim 14 wherein said activation portion includes an activation body having a recess configured to hold an end of said pull cable.
16. The pre-engineered fire suppression system of claim 15 wherein said first triggering mechanism is a metron actuator.
17. The pre-engineered fire suppression system of claim 16 wherein said metron actuator includes an extendable pin and a base and when triggered said extendable pin pierces said base and applies a force to said actuation arm on said actuation lever, which in turn applies a force to said valve lever breaking said breakable pin.
18. The pre-engineered fire suppression system of claim 10 wherein said valve lever is constrained to movement substantially within a plane by a slot in said valve body.
19. The pre-engineered fire suppression system of claim 18 wherein said valve is held in a closed position by a breakable pin held in compression between by said valve body.
20. The pre-engineered fire suppression system of claim 19 wherein said breakable pin is held in compression between a threaded adjustment and said valve.
21. The pre-engineered fire suppression system of claim 19 wherein said valve lever is coupled to said breakable pin.
22. The pre-engineered fire suppression system of claim 21 wherein said valve lever is coupled to said breakable pin with a loop.
23. The pre-engineered fire suppression system of claim 21 wherein said valve lever includes an interlink hole and a lock pin hole between said interlink hole and said loop.
24. The pre-engineered fire suppression system of claim 23 wherein said actuation lever includes an activation arm and a link arm and wherein said link arm includes a link slot and said valve lever is coupled to said link arm to allow said valve lever to have a limited amount of movement relative to said link arm on said actuation lever.
25. The pre-engineered fire suppression system of claim 24 wherein said loop pivots on said breakable pin until said breakable pin breaks when said actuation lever exerts a force on said valve lever.
26. The pre-engineered fire suppression system of claim 24 wherein said actuation lever is substantially constrained to planer movement by a slot in said activation portion.
27. The pre-engineered fire suppression system of claim 1 wherein said sensor is a smoke detector and said control panel is in electrical communication with a plug on said actuation device of said fire extinguishing unit.
28. The pre-engineered fire suppression system of claim 1 further including a test device to test communication of said at least one fire extinguishing unit with said control panel.
29. A pre-engineered fire suppression system configured to release pressurized material to extinguish fires, said pre-engineered fire suppression system comprising: a control panel; a sensor capable of detecting a fire condition and in communication with said control panel; at least one fire extinguishing unit in communication with said control panel and including an activation device coupled to a tank capable of holding the pressurized material and wherein said activation device includes a first triggering mechanism capable of being triggered by said control panel and a second manual triggering mechanism; a lock pin status sensor in communication with said control panel; a breakable pin held in compression and wherein said breakable pin is configured to be broken upon said first triggering mechanism being triggered; and an activation portion and a valve portion and a lever mechanism extending between said activation portion and said valve portion, wherein said lever mechanism includes a valve lever coupled to an actuation lever, and wherein said valve lever includes a valve lever hole capable of being aligned with a lock pin receiving recess on said valve portion, and the lock pin, and wherein when a lock pin is placed in said aligned lock pin receiving recess and said valve lever hole said fire extinguishing unit is placed in a safe state.
30. The pre-engineered fire suppression system of claim 29 wherein said valve lever is constrained to movement substantially within a plane by a slot in said valve body and said actuation lever is constrained to movement substantially within said plane by a slot in said actuation portion.
31. The pre-engineered fire suppression system of claim 29 wherein said valve portion is held in a closed position by said breakable pin held in compression between by said valve portion and wherein said valve lever is coupled to said breakable pin with a loop at least partially encircling said breakable pin.
32. The pre-engineered fire suppression system of claim 31 wherein said valve lever includes an interlink hole and a lock pin hole between said interlink hole and said loop and wherein said actuation lever includes an activation arm and a link arm and wherein said link arm includes a link slot and said valve lever is coupled to said link arm with an interlink to allow said valve lever to have a limited amount of movement relative to said link arm on said actuation lever.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Other advantages of the present invention will be readily appreciated, as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
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DESCRIPTION OF THE EXAMPLE EMBODIMENTS
(43) The invention provides a pre-engineered dynamic fire suppression system 20 that includes at least one fire extinguishing unit or device 30 in communication with a control panel 150 and at least one sensor 180 in communication with the control panel 18. Each fire extinguishing unit 30 includes an actuation device 40, having an actuation portion 90 and a valve portion 50, and a tank 32 capable of containing pressurized contents or material.
(44) The tank 32 may be any type of tank commonly used to hold pressurized contents in the fire extinguishing industry. The size may vary, and commonly used in fire suppression systems are 25 cubic foot to 1500 cubic foot tanks, depending on numerous factors determined when designing the desired system 20. The contents of the tank 32 of the subject invention could be one or more fluids, dry chemicals, or the like. For a non-exhaustive list, these contents could include pressurized water, carbon dioxide, dry chemicals, ammonium phosphate, sodium bicarbonate, compounds containing potassium, and various types of chemical foams or clean agents. Each fire extinguishing unit 30 does not have to contain the same contents, and the contents or pressurized materials may vary depending on location, environmental factors, types of flammable materials in the facility or other considerations.
(45) The actuation device 40 of the present invention is unique in allowing manual and automatic operational control from the control panel 150 as well as in some embodiments manual control on or proximate to the unit 30 or even one or more separate manual release stations that are not part of the control panel 150. The actuation device 40 includes a discharge nozzle or ejection ports 61 separated from the pressurized contents in the tank 32 by a valve 62 in the valve body portion 60 of the valve portion 50. The valve 62 has an open state, wherein pressure is relieved or released from the tank 32 and the contents are ejected through and oriented by the discharge nozzle 61. The valve 62 also has a closed state, as illustrated in
(46) The actuation device 40 is in communication with the control panel 150 and may be in electrical communication through an electrical connection 8 between the triggered actuator 160, and may include other electrical connections or communications with the control panel, for receiving commands from and for transmitting data to control system which may include a central processing unit (CPU) in the control panel 150. As stated above, the control panel 150 is in communication with sensors 180. The extinguishing unit 30 may further include a pressure reading or using a pressure connector 51 that may be communicated through the electrical connection 8 or other mechanism to the control panel 150. As such, the system 20 may qualify as an A/C system by electrically releasing via an activation of a smoke detector or heat detector, such as the sensor 180, in communication with the control panel 150, informing the control panel 150 to fire or trigger the unit 30.
(47) The control panel 150 may include a manual release 152 configured to manually trigger from the control system 150 the units 30. The control panel 150 may also include a control key 154 that may activate or deactivate the control panel 150 with a lockable key. This allows a control panel 150 to be disabled in certain circumstances, ensures that it cannot be unintentionally deactivated. The control panel may also include system status which may show the status of the overall system, a zone status, which may show the overall status of each zone, an individual unit status which may show the status of each unit 30. A zone 157 is illustrated in
(48) The actuation device 40 includes a safety or lock pin 34 similar to the type found on most portable fire extinguishers today. The lock pin or safety pin 34 is configured with a loop 33 and elongated portion 35 that is inserted into a lock hole 56 on the valve portion 50. A lock retention mechanism or recess 76 which is illustrated as a lock pin securing hole on the actuation portion 70 is also included to ensure the device 30 keeps its locking pin 34 proximate to the unit 30 but not in the lock hole 56 on the valve portion 50, which would render the unit 30 in a safe or inoperable state. The present invention substantially simplifies use of the device as much as possible and makes its operation similar to existing hand held fire extinguishers by making removal and placement of the lock pin 34 similar to the steps required to place hand held fire extinguishers in an operable or inoperable state. Therefore, when installed, the lock pin 34 is removed from the lock hole 56 and placed into the lock retention mechanism 76 on the actuation portion 70 to prepare the actuation device 40 in a ready state where it can discharge its contents. However, the present invention provides a unique lock pin securing mechanism 76 such as the illustrated hole on the actuation portion 70 for receiving the lock pin 34 when it is disengaged from the lock hole 56 on the valve portion 50. As previously stated, one issue with pre-engineered systems is the installers or helpful people replace the lock pin into the valve lock hole 56 which prevents it from firing and the present invention provides a unique apparatus and device that reports back to the control system the status of whether the device is ready to fire or not. Therefore, the present invention includes lock securing mechanisms 76 specifically the lock pin securing hole 79 on the actuation portion 70 into which the lock pin 34 is inserted. The lock pin securing mechanism includes a magnet 78 at one end that insures the pin 34 stays secured in the lock pin securing mechanism 76. As described in further detail below the magnet 78 magnetizes the lock pin 34 which triggers a sensor or switch 77 confirming that the lock pin 34 is secured within the lock securing mechanism 76 on the actuation portion and therefore the device 30 is in an operation or ready state, ready to discharge its contents.
(49) In traditional handheld fire extinguishing units the lock pin 34 secures one of the handles from approaching the other handle and therefore preventing release of the valve 62. In the present invention, the actuation device 40 further includes a lever mechanism 110, which includes an actuation lever 130, an actuation interlink 112, a valve lever 140, and a lock hole 144 on the valve lever 140. It should be noted that while the lock pin retention mechanism 76 is on the actuation portion 70 it could be potentially located in other areas. While the motion of the actuation lever mechanism 110 is further described below, the valve lock hole 56 is defined or passes through the body of the valve portion 50 and is aligned with lock hole 144 on the valve lever 140 in an untriggered state allowing the lock pin 34 to be inserted at any time to put the device in a safe state to allow work on the system 20. The valve lever 140 is, with the safety pin 34 inserted into the aligned lock holes 56, 144 such that the valve lever 140 becomes secured from substantial movement relative to the valve body 60. More specifically the holes 56, 144 allow the safety pin 34 inserted into the lock hole 52, to pass through the valve body 60 and valve lever 140, which immobilizes the valve lever 140, preventing the valve lever 140 from breaking the breakable pin 82, which is commonly a glycerin bulb 84. When removed, the safety pin 34 in the present invention is moved to the lock pin securing mechanism 76 on the actuator 70 and inserted until it touches the magnet 78, which then slightly magnetizes the safety pin 34, causing the sensor 77 to sense the safety pin 34 being securely stored in the storage hole or lock pin securing mechanism 76. The sensor 77 in turn can signal the control panel 150 that the unit 30 is operational. This would remove any fault lights on the control panel 150. The safety pin 34 is formed from carbon steel, allowing it to be magnetized as discussed above. Of note, if the safety pin 34 is removed but not inserted into the storage hole or lock pin securing mechanism 76, the fluid or gas may still be discharged from the associated unit 30 while the sensor 77 may still send a warning to the control panel 150.
(50) In a specific embodiment, the sensor 77 on the actuation portion 90 is a Reed switch so that when the safety pin 34 is fully inserted into the storage hole or aperture, it contacts the magnet 78, is magnetized and the reed switch is triggered, providing feedback to the control panel 150 that the unit 30 is operational as the safety pin 34 has been removed from the lock holes 52, 144 and properly stored in the lock pin security mechanism 76. If the pin 34 is not placed in the second aperture or component, the control system 20 will indicate an installation fault with that specific fire extinguishing unit 30 which will prompt investigation by the supervisor. If the pin 34 is removed from holes 56, 144 but not placed in the lock pin securing mechanism 76, the control system will still indicate fault to the supervisor as a precautionary measure. No matter the placement of the switch, it should be noted that the unit will still discharge in response to elevated temperatures when the glycerin bulb 84 breaks in response to increased temperature. However, if the system 20 includes more than one fire extinguishing unit or device 30 or in some instances more than one fire extinguishing device or unit 30 in a single area it may include a breakable pin 82 which is not a glycerin bulb 84 in place of the glycerin bulb 84, and is not configured to shatter at a specified temperature. In most instances, in a multiple device system, it is not desirable to have one device 30 actuate independent of another device 30, as they are usually sized or placed to work in cooperation and if they do not work in cooperation, such as only one device activating, they may not extinguish the fire, even if the other device later activates. As such a system that contains multiple extinguishers generally will not have a glycerin bulb that allows activation unit by unit in response to a temperature change. Of course a glycerin bulb for independent activation by temperature is still acceptable for a single unit system or a system that has a single unit in widely disbursed areas where only a single unit is designed or desired to be activated in response to a fire condition. Even if there is a fault due the pin 34 not being removed properly, if it has been removed from the lock aperture 56, 144 and not inserted into the lock pin retention mechanism 76, it could be configured to still attempt to fire in response to a specified operating configuration. It should be appreciated that the pin 34 and the determination of proper pin storage could also be utilized to notify the control system 20 of improper installation without necessarily incorporating features of a Reed switch. For example, the pin 34 may include an electrical component, or the second aperture/component may include a mechanical switch that actuates during the insertion of the pin 34. Furthermore, it may include a sensor that detects the lock pin 34 inserted into the valve hold 56.
(51) The actuation device 40 may include a manual triggering mechanism 90, illustrated in the figures as at least one of a pull handle 94, pull loop 92 or pull lever 97. The pull loop 92 may be formed as part of the actuation lever 130 and extends out the opposing side of the actuation lever from a link arm 136. The pull loop 92 allows activation locally at the device so long as the locking pin 34 is removed from the valve locking holes 56, 144. When the pull loop 92 is pulled it rotates the actuation lever 130 including the actuation portion 70, which pivots and in turn rotates the link arm 136 and causes the valve lever 140, coupled to the link arm 136 through the link slot 138 and moves, breaking the breakable pin 82. In some embodiments it may not be desirable to manually engage the device 30 at the device so a remote handle 94 or a pull lever 97 on a manual release or activation box 96 may be desirable. In addition, as illustrated in
(52) As illustrated in
(53) The system 20 generally provides a plurality of fire extinguishing units 30 configured to be arranged in a high risk area, such as an engine, server room, or control room. The fire extinguishing units 30 are spaced apart with each respective discharge nozzle(s) or part(s) 61 oriented such that a concerted discharge sufficiently covers the entire at risk area. Each fire extinguishing unit 40 may be in communication with a control panel 150, sensors 180, and/or the other units 40. In addition to the control panel 150 activating the actuation devices 40 in response to input from sensors 180, the control panel 150 may include programming that when one fire extinguisher unit 40 discharges, either manually or via a temperature threshold breaking a glycerin bulb 84, the control panel 150 may sense such discharge and a command may be sent to the nearby fire extinguishing units 40 to discharge their contents. More specifically, if one unit 140 discharges, the control unit may automatically discharges the other units 40. The sensors 180 can also include conventional fire detecting units such as smoke alarms and heat monitors or any other device in communication with the control panel to actuate the device 40 through the triggered actuator 160 such as the illustrated metron actuator 164.
(54) The manual actuators, such as the pull loop 92, pull cable 94 are particularly useful if there is a small localized fire risk that doesn't require the discharge from multiple devices, or it can be set off by a person before the control panel 150 has even sensed through the sensors 180 that a fire is present, or before the heat reaches a temperature that breaks the glycerin bulb 84, if so equipped.
(55) It should be noted that as mentioned above there is a link slot 138 in the actuation lever 130, specifically the link arm 136 which allows the interlink 102 when the manual activation 92, 94 or 97 is pulled to slide freely relative to the actuation lever 130, but also move the valve lever 140. The activation lever 130 includes the activation arm at 132 and the link arm the activation arm 132 includes an activation surface 130 136 extending therefrom. For against which forces applied such as when the triggered actuator 160 extends the pin 168. The link arm includes a pivot hole 137 through which a faster may be applied with the activation lever 130 pivoting or rotating about the pivot hole 137. At the same time, the interlink 102, 104 when the actuation lever 130 is pivoted in response to the triggered actuator 160 being activated, the interlink 102, 104 forces the valve lever 140 to move with the actuation lever 130, thereby breaking the breakable pin 82. The triggered actuator 160 can also include electric actuators, such as the metron actuator 164 illustrated throughout the figures, wherein the control panel 150 may automatically, activate the triggered actuator 160, or in rare instances a supervisor at the control panel 150 can manually activate the triggered actuators 160 and thus change the state of the valves 62 from any remote location by operation of commands sent through the control panel 150. As mentioned above, these commands could require all or only certain fire extinguishing units 40 to discharge, although in most instances, it is expected that all will be discharged together to meet code requirements. A metron actuator 164 is illustrated in
(56) In one exemplary embodiment, as best illustrated in
(57) As discussed above a triggered actuator 160, such as the illustrated metron actuator 104 is an electric actuator fired remotely or automatically, by an electrical charge. While the electrical charge may be provided by a control panel 150 through the connectors 162, the control panel 150 may be in wireless communication with the actuator 40 and as such need an additional electrical source to provide the charges to fire the triggered actuator 160. In operation, the metron actuator 104 fires by igniting black powder, not illustrated, as a one-time activation, creating expanding gas not the piston or plunger 168 that pierces the bottom 166 (illustrated as activated in
(58) Each respective fire extinguishing unit 30 may be mounted in a variety of ways, placed on a shelf, or in a wall, placed on a rack within the room or any other method. In the illustrated embodiment, the unit 30 is a smaller unit of about 375 cubic feet and is provided with a mounting bracket 36. The mounting bracket 36 can be seen best in
(59) In some embodiments the electrical connection may include a Deutsches Institut für Normung (DIN) connector 74 or any other type of easy plug connector. The DIN connector 74 allows communication with the CPU and permits transfer of data regarding individual fire extinguishing units 30 to a user/supervisor or control panel 150. Of course, the illustrated connection for firing the triggered actuator 160 may be combined with the DIN feedback. The DIN 57 also allows each fire suppression system 20 to remotely activate the units 30, locally, or in concert. As such, the combination of actuators 40 in each fire extinguishing unit 30, and the ability to remotely and locally fire specific fire extinguishing units 30 in response to environmental data allow a dynamic response to fire risks of various location and magnitude. As stated above, the electrical connection 74 also transmits data regarding whether the fire extinguishing units 30 have been properly installed. The electrical connection 74 could further include wireless technology. For example, the control panel may indicate to the supervisor if a fire extinguishing unit 30 was installed without removing the pin 34. It should also be appreciated that the CPU could be associated with wireless transmission of information, such that the supervisor need not be on site. As just one exemplary example, the supervisor may get notifications on his or her mobile device or a computer from off-site operations headquarters. To this extent, the system 20 provides an electric connection means that may be integrated into any existing control system without requiring the effort associated with having to configure an entirely new system which often requires the installation of complex and expensive wires and electrical components.
(60) As the present invention uses a triggered actuator 160 that may be a single use trigger actuator, such as a metron actuator 164, the system 20 includes a unique test device 190 as illustrated in
(61) Many modifications and variations of the present disclosure are possible in light of the above teachings and may be practiced otherwise than as specifically described while within the scope of the invention.
(62) The specification and illustrations of the embodiments described herein are intended to provide a general understanding of the structure of the various embodiments. The specification and illustrations are not intended to serve as an exhaustive and comprehensive description of all of the elements and features of apparatus and systems that use the structures or methods described herein. Many other embodiments may be apparent to those of skill in the art upon reviewing the disclosure. Other embodiments may be used and derived from the disclosure, such that a structural substitution, logical substitution, or another change may be made without departing from the scope of the disclosure. Accordingly, the disclosure is to be regarded as illustrative rather than restrictive.
(63) Certain features are, for clarity, described herein in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features that are, for brevity, described in the context of a single embodiment, may also be provided separately or in any sub combination. Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any feature(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature of any or all the claims.