Fire suppression device suitable for multiple scenarios or different stages of fire

Abstract

The present invention relates to a fire suppression device suitable for multiple scenarios or different stages of fire. The fire suppression device has a flat shape, is embedded in a narrow space, and comprises a housing, an outlet assembly and fire extinguishing agents. The housing is provided with a plurality of mutually parallel and independent transverse cavities arranged longitudinally; the transverse cavities are provided with the outlet assembly at one end; pistons are respectively provided in the plurality of transverse cavities; and an actuator is provided at the other end of each transverse cavity. Different types of fire extinguishing agents are respectively accommodated between the pistons in the plurality of transverse cavities and the outlet assembly, and are suitable for different types of fire; and gas generating agents having different combustion rates are respectively provided between the pistons and the actuators in the plurality of transverse cavities, and are used for controlling the spraying rates of the fire extinguishing agents, thus being suitable for different stages of fire. The fire suppression device provided by the present invention uses the actuators as power sources, and thus has no internal pressure when being not in use, thereby solving the problems of leakage risks and periodic inspection of traditional pressurized type fire suppression devices.

Description

Fire suppression device suitable for multiple scenes or different stages of fire TECHNICAL FIELD

[0001] The present application relates to the field of fire fighting technology, and particularly relates to a fire suppression device suitable for multiple scenes or different stages of fire. BACKGROUND

[0002] Common fires are divided into six categories: A class is solid material fire. Such material usually has the nature of organic material, and generally produces hot cinder when burning. Such as wood, hay, coal, cotton, wool, hemp, paper, etc. fire; B class is liquid or meltable solid material fire. Such as kerosene, diesel, crude oil, methanol, ethanol, asphalt, paraffin, plastic, etc. fire; C class is gas fire. Such as coal gas, natural gas, methane, ethane, propane, hydrogen, etc. fire; D class is metal fire. Such as potassium, sodium, magnesium, titanium, zirconium, lithium, aluminum-magnesium alloy, etc. fire; E class is live fire. Fire of objects burning with electricity; F class refers to cooking utensils inside cooking materials (such as animal and plant oils) fire. And the fire caused by thermal runaway of lithium ion battery often contains the following five types of fires: graphite as fuel of negative electrode material solid fire (A class), organic electrolyte as fuel of liquid fire (B class), gas products of separator decomposition and other side reactions as fuel of gas fire (C class), aluminum current collector and internal lithium intercalation as fuel of metal fire (D class) and electrical fire caused by the whole system (E class).

[0003] The existing fire extinguishing device realizes multiple injection in the following ways: ① multiple fire extinguishing devices are connected in parallel to the same pipeline, and the injection of the multiple fire extinguishing devices is controlled by a selection valve; ② a fire extinguishing device is used, and an electromagnetic valve is added at the outlet of the fire extinguishing device pipeline to realize the opening and closing of the pipeline, thereby realizing multiple injection. The existing solutions all use electromagnetic valves or selection valves to realize multiple injection by controlling the opening and closing of the pipeline. Once the valve fails, the pipeline cannot be normally connected, resulting in failure to normally deliver the fire extinguishing agent to the designated position. Moreover, the electromagnetic valve has the problems of high cost, high dependence on power supply, and low reliability. The existing solutions are large in size and are not suitable for narrow space arrangement, especially in the battery box. The internal space of the lithium battery box is limited, and the existing cylindrical fire extinguishing device is not suitable for embedded arrangement in the battery box due to its large size and large length-width ratio, and can only be arranged externally, which puts higher requirements on the space of the vehicle carrying the battery box. Moreover, most of the existing fire extinguishing devices use a siphon structure, and the high-temperature gas generated after the device works directly contacts the fire extinguishing agent, which can cause the fire extinguishing agent to decompose at high temperature and produce components that are not conducive to the battery box, corrode and contaminate the battery box, and affect the normal charging and discharging of the battery. In addition, due to the characteristics of the siphon structure, high requirements are put on the installation direction of the fire extinguishing device, and the gas may be short-circuited, causing the fire extinguishing agent to fail to be normally injected. Therefore, the existing fire extinguishing device cannot meet the requirements of embedded arrangement and no damage to the circuit after injection, and does not affect the normal charging and discharging of the battery.

[0004] Moreover, the existing fire extinguishing device or fire extinguishing system cannot provide a solution for different types of fires. Generally, multiple different types of fire extinguishing devices are integrated to extinguish different types of fires, which occupies a large space. In addition, there is no mature fire extinguishing device for class D metal fire in the industry. Therefore, there is an urgent need for a fire extinguishing device that can extinguish class A, B, C, D, E and F fires and control the injection speed of the fire extinguishing agent to realize multiple pulse injection, so as to be suitable for different stages of fire or multiple scene fires. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a fire extinguishing device that is small in size, high in reliability, and suitable for multiple scenes or different stages of fire.

[0006] The present application is realized by the following technical solutions:

[0007] A fire extinguishing device suitable for multiple scenes or different stages of fire, which is flat and embedded in a narrow space.

[0008] The fire suppression device comprises a shell, an outlet assembly and fire extinguishing agent; the shell has a plurality of longitudinal parallel and independent transverse cavities, one end of the transverse cavities is provided with the outlet assembly, the outlet assembly comprises a plurality of piston plug outlets respectively communicating with the transverse cavities, the piston plug outlets are provided with outlet diaphragms for plugging; a piston is arranged in each of the transverse cavities, the other end of each of the transverse cavities is provided with a starter; different types of the fire extinguishing agent are respectively arranged between the pistons in the transverse cavities and the outlet assembly, which are suitable for different types of fire; different burning speed gas generating agents are respectively arranged between the pistons in the transverse cavities and the starters, which are used for controlling the spraying speed of the fire extinguishing agent and are suitable for different stages of fire;

[0009] When thermal runaway occurs, at least one of the starters is started according to the ignition order to make the corresponding gas generating agent produce high-pressure gas to push the corresponding piston to move, the piston pushes the fire extinguishing agent in the corresponding transverse cavity, and when the pressure in the transverse cavity reaches a certain value, the corresponding sealing diaphragm is opened, and the fire extinguishing agent is sprayed out of the corresponding piston plug outlet.

[0010] Further, the fire suppression device, the transverse cavities comprise piston cavities containing the fire extinguishing agent and medicine cavities communicating with the piston cavities and containing the gas generating agents; the piston plug outlets and the pistons are respectively arranged at both ends of the piston cavities, and the ignition part of the starter is arranged at the opening end of the medicine cavity.

[0011] Further, the fire suppression device, the transverse cavities further comprise transition cavities connected between the piston cavities and the medicine cavities, and the diameters of the transition cavities are smaller than those of the piston cavities and the medicine cavities.

[0012] Further, the fire suppression device, the outlet assembly comprises a plurality of piston plugs arranged one by one at one end of the transverse cavities, and the piston plug outlets penetrate the piston plugs and communicate with the transverse cavities.

[0013] Further, the fire suppression device, a first sealing ring is arranged between the piston plug and the shell.

[0014] Further, the fire suppression device, the adjacent two piston plugs and the uppermost and lowermost piston plugs in the longitudinal arrangement and the shell wall of the shell are fixed by a head.

[0015] Further, the fire suppression device, the starter comprises a starter base connected to the end of the transverse cavity, an electric detonator arranged in the transverse cavity and fixed to the starter base, and a wire harness with one end penetrating the starter base and connected to the electric detonator.

[0016] Further, the fire suppression device, one end of the wire harness is a Dupont wire connector, the other end is an AMP connector, the Dupont wire connector is connected with the electric detonation tube, and the AMP connector is connected with the fire extinguishing system control host.

[0017] Further, the fire suppression device, the fire extinguishing agent contained in the transverse cavity is one or a mixture of two of trimethoxy boron oxide hexacyclic ring, perfluorohexanone, 2-BTP, perfluoroiodobutane C4F9I, perfluoroiodooctane, carbon tetrachloride, water, water-based fire extinguishing agent and perfluorohexane.

[0018] Further, the fire suppression device, the piston plug and the outlet diaphragm are integrally injection molded by polypropylene or polyethylene material; the thickness of the outlet diaphragm is 0.2mm-0.5mm, and the opening pressure is 1-3MPa.

[0019] Further, the fire suppression device, the number of the transverse cavities is at least 2.

[0020] Further, the fire suppression device, the gas generating agent in the plurality of transverse cavities adopts at least two of the burning rate of 1-34mm / s.

[0021] The advantages and effects of the present application are:

[0022] 1. The fire suppression device provided by the present application adopts a gas generator (starter) as a power source, and there is no pressure inside when it is not working, which can solve the potential leakage risk and regular inspection problem of the traditional pressure storage type fire suppression device.

[0023] 2. The fire suppression device provided by the present application adopts a flat piston cavity structure of a plurality of longitudinally arranged transverse cavities, which can meet the requirements of inlaid arrangement in narrow space. The piston structure separates the gas generated by the gas generator from the liquid fire extinguishing agent, avoids the contact between high-temperature gas and the fire extinguishing agent, decomposes the problem of lithium battery, solves the problem that the traditional siphon flat device cannot be used without damaging the circuit after spraying, does not affect the normal charging and discharging of the battery, and solves the potential gas short circuit problem of the traditional siphon flat fire suppression device.

[0024] 3. The fire suppression device provided by the present application adopts an independent multi-channel (transverse cavity) scheme, and each channel has a corresponding gas generator (starter) as a power source, which can realize single-channel or multi-channel single or concurrent start, realize multi-channel pulse spraying by controlling the start current input time of each channel, realize multiple spraying, and greatly improve the suppression of rekindling. At the same time, by replacing the corresponding channel fire extinguishing agent and its gas generator, the multiple use function can be realized, and the use and maintenance cost is greatly reduced.

[0025] 4. The piston plug and the outlet diaphragm of the fire suppression device are integrally formed by injection molding, so that the cost is greatly reduced, and the risk of leakage of the fire extinguishing agent from the outlet diaphragm is fundamentally solved.

[0026] 5. Each channel of the fire suppression device can accommodate different types of fire extinguishing agents, and is suitable for different types of fires. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 shows a structural schematic diagram of the fire suppression device provided by the present application;

[0028] Fig. 2 shows a structural schematic diagram of the shell of the fire suppression device provided by the present application;

[0029] Fig. 3 shows a structural schematic diagram of the outlet assembly of the fire suppression device provided by the present application;

[0030] Fig. 4 shows a structural schematic diagram of the starter of the fire suppression device provided by the present application.

[0031] Reference signs: 210 - starter; 220 - shell; 230 - gas generating agent; 240 - piston; 250 - fire extinguishing agent; 260 - outlet assembly; 270 - internal hexagonal screw; 211 - wire harness; 212 - hexagonal nut; 213 - starter base; 214 - starter O-ring; 215 - electric detonation tube; 221 - agent cavity; 222 - transition cavity; 223 - piston cavity; 261 - head; 262 - piston outlet; 263 - piston plug O-ring; 2621 - outlet diaphragm. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiments of the present application will be described in more detail below in combination with the drawings of the embodiments of the present application. The described embodiments are part of the embodiments of the present application, but not all the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below in combination with the drawings:

[0033] In the description of the application, it is necessary to understand that, unless otherwise specified, the meaning of "a plurality of" is two or more; The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance. In the description of the application, it is also necessary to explain that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0034] Figure 1 shows a schematic diagram of the structure of the fire suppression device provided by the present application, which is flat and can be embedded in a narrow space. The fire suppression device comprises a housing 220, an outlet assembly 260, fire extinguishing agents 250 and an initiator 210. The housing 220 has a plurality of longitudinal parallel and independent transverse cavities, one end of the plurality of transverse cavities is provided with the outlet assembly 260, and the other end of the plurality of transverse cavities is provided with the initiator 210 one by one. The number of transverse cavities is at least 2, preferably but not limited to 5. The outlet assembly 260 comprises a plurality of piston plug outlets 262 corresponding to the plurality of transverse cavities, and the piston plug outlet 262 is provided with an outlet diaphragm 2621 for sealing and separating the fire extinguishing agent 250 from the outside. The fire extinguishing agent 250 is accommodated in the plurality of transverse cavities, and different types of fire extinguishing agents are accommodated between the piston 240 in the plurality of transverse cavities and the outlet assembly 260, which are suitable for different types of fires. That is, the fire extinguishing agent 250 is sealed and isolated from the initiator 210 by the piston 240 arranged in the transverse cavity. Different burning speed gas generating agents 230 are arranged between the piston 240 in the plurality of transverse cavities and the initiator 210, which are used to control the release speed of the fire extinguishing agent and are suitable for different stages of fire. That is, the transverse cavities are sequentially provided with the piston plug outlet 262, the fire extinguishing agent 250, the piston 240, the gas generating agent 230 and the initiator 210 from one end to the other end (from left to right in Figure 1). When thermal runaway occurs, at least one initiator 210 is ignited in a controllable order to make the corresponding gas generating agent 230 generate high-pressure gas to push the corresponding piston 240 to move, and the piston 240 pushes the corresponding fire extinguishing agent 250 in the transverse cavity. When the pressure in the transverse cavity reaches a certain value, the corresponding sealing diaphragm 2621 is opened, and the fire extinguishing agent 250 is sprayed from the corresponding piston plug outlet 262.

[0035] It should be noted that in an embodiment, the extinguishing agent 250 includes different kinds of extinguishing agents, and several transverse cavities correspond to accommodate different kinds of extinguishing agents, that is, each transverse cavity is provided with different kinds of extinguishing agents to achieve different safety protection functions, and is suitable for one or more combinations of A, B, C, D, E and F class fires. Each channel is provided with an independent gas generating agent and an ignition mechanism, which can realize controllable ignition sequence and extinguishing agent discharge speed (achieved by the burning speed of the gas generating agent), and is suitable for different stages of fire. The extinguishing agent accommodated in a transverse cavity is one or a mixture of two of trimethoxy boroxin, perfluorohexanone, 2-BTP, perfluoroiodobutane C4F9I, perfluoroiodooctane C6F13I, carbon tetrachloride CCl4, water, water-based extinguishing agent and perfluorohexane. Perfluorohexanone is 1,1,1,2,2,4,5,5,5-nonfluoro-4-(trifluoromethyl)-3-pentanone. 2-BTP is 2-bromo-3,3,3-trifluoropropene. Both of them are fluorine-containing halogenated hydrocarbons, which are liquid at room temperature, easy to vaporize, non-toxic and suitable for human places, global warming potential GWP = 1, non-conductive, very suitable for lithium battery fires and E class electrical fires. The filling rate of the extinguishing agent 250 in the fire suppression device (the ratio of the volume of the extinguishing agent to the volume of the shell) is 85-90%, and the filling amount is 0.2-2Kg. The chemical formula of trimethoxy boroxin is (CH3O)3B3O3, commonly known as 7150 extinguishing agent, which is very suitable for D class metal fires. The gas generating agent 230 corresponding to each initiator 210 can also be different, and the burning speed of several gas generating agents can be two or more combinations of 1-34mm / s.

[0036] As shown in FIG. 2, the transverse cavity includes a piston cavity 223, a drug cavity 221 and a transition cavity 222 communicating between the piston cavity 223 and the drug cavity 221. The diameter of the transition cavity 222 is smaller than that of the piston cavity 223 and the drug cavity 221. The piston cavity 223 is used to accommodate the extinguishing agent 250, and the piston plug outlet 262 and the piston 240 are respectively arranged at both ends of the piston cavity 223, and the transition cavity 222 is used to limit the movement range of the piston 240. The drug cavity 221 is used to accommodate the gas generating agent 230, and the ignition part of the initiator 210 is arranged at the open end of the drug cavity 221, and the transition cavity 222 is used to have greater pressure to push the piston 240 when the gas generating agent 230 generates high-pressure gas.

[0037] As shown in Fig. 3, the outlet assembly 260 comprises a plurality of piston plugs arranged one by one at one end of the transverse cavity (the open end of the piston cavity 223), and a piston plug outlet 262 is formed through the piston plug and communicates with the transverse cavity. An outlet diaphragm 2621 is arranged at the piston plug outlet 262, blocks one end of the transverse cavity (the piston cavity 223), and opens when the pressure in the transverse cavity (the piston cavity 223) reaches a certain value. Two adjacent piston plugs are fixed by a head 261, and the uppermost and lowermost piston plugs in the longitudinal arrangement are also fixed with the shell wall of the shell by the head 261. That is, a plurality of heads 261 fix a plurality of piston plugs into one body. Specifically, an O-ring 263 is arranged between the piston plug and the shell 220 for sealing. The piston plug and the outlet diaphragm 2621 can be integrally injection molded by polypropylene or polyethylene material. The thickness of the outlet diaphragm 2621 is 0.2-0.5 mm, and the opening pressure is 1-3 MPa. Preferably, the thickness of the outlet diaphragm 2621 is 0.3 mm, and the opening pressure is 2.5 MPa.

[0038] As shown in Fig. 4, the initiator 210 comprises an initiator base 213, an electric detonator 215 and a wire harness 211. The initiator base 213 is connected to the end of the transverse cavity (the open end of the charging cavity 221) and is sealed. The electric detonator 215 is used to make the gas generating agent react and generate high-pressure gas, is arranged in the transverse cavity (the charging cavity 221) and is fixed to the initiator base 213. One end of the wire harness 211 is connected to the electric detonator 215 through the initiator base 213, and the wire harness 211 outside the initiator base 213 is fixed by a hexagonal nut 212. One end of the wire harness 211 is a DuPont wire connector, and the other end is an AMP connector. The DuPont wire connector is connected to the electric detonator 215, and the AMP connector is connected to the control host of the fire extinguishing system. Specifically, the initiator base 213 is connected to the end of the transverse cavity by being connected to the shell through threads, and an O-ring 214 is arranged between the initiator base 213 and the shell for sealing. It should be noted that the charge amount of the electric detonator 215 is 45-60 mg, and the starting current is not less than 1.2 A; the gas generating agent 230 is a composite solid propellant, the burning rate is not less than 25 mm / s, and the charge amount is 2-5 g.

[0039] The working principle of the fire suppression device is as follows:

[0040] When a fire occurs, the fire suppression device is started after receiving the starting electric signal sent by the fire extinguishing system control host. At least one wire harness 211 of the starter 210 is started according to the set ignition sequence at the same time or in batches, which ignites the corresponding electric detonation tube 215, makes the corresponding gas generating agent 230 in the corresponding charging cavity 221 react and generate high-pressure gas, increases the internal pressure, and then can drive the corresponding piston 240 under the action of the pressure, the piston 240 drives the fire extinguishing agent 250 in the piston cavity, when the pressure reaches a certain value, the sealing diaphragm 2621 at the corresponding piston plug outlet 262 is opened, and the fire extinguishing agent 250 in the corresponding piston cavity is sprayed under the action of the pressure, and then the open fire is extinguished and the fire spread is prevented. According to the fire, at least one starting channel can be completed at the same time or in batches to complete the spraying of fire extinguishing, and according to the need, the input time of the current of each channel is controlled to realize multiple pulse spraying, so as to realize multiple fire extinguishing and inhibit the fire from rekindling. Different burning rate gas generating agents can also be arranged in the charging cavities of the several transverse cavities according to the need, so as to control the spraying speed of the fire extinguishing agent, which is suitable for different stages of the fire. When the fire suppression device is not working, no high-pressure gas will be generated due to the non-working starter, so as to reduce the internal pressure of the shell, and then the safety of the fire suppression device can be improved and the maintenance frequency can be reduced.

[0041] The above examples are only used to illustrate the technical solutions of the present application, and are not used to limit the implementation range of the present application. Any equivalent changes and modifications made within the protection scope of the present application shall be considered to fall within the protection scope of the present application.

Claims

1. A fire suppression device applicable to multiple scenarios or different stages of a fire, characterized in that, The fire suppression device is flat and embedded in a narrow space; The fire suppression device comprises a shell (220), an outlet assembly (260) and fire extinguishing agents (250); the shell (220) has a plurality of longitudinal parallel and independent transverse cavities, one end of the transverse cavities is provided with the outlet assembly (260), the outlet assembly (260) comprises a plurality of piston plug outlets (262) respectively communicating with the transverse cavities, the piston plug outlets (262) are provided with outlet diaphragms (2621) for plugging, a piston (240) is arranged in each of the transverse cavities, and the other end is provided with an actuator (210); different types of fire extinguishing agents (250) are arranged between the pistons (240) in the transverse cavities and the outlet assembly (260) respectively, which are suitable for different types of fires; different burning rate gas generating agents (230) are arranged between the pistons (240) in the transverse cavities and the actuators (210) respectively, which are used for controlling the discharge speed of the fire extinguishing agents and are suitable for different stages of the fire; When thermal runaway occurs, at least one of the actuators (210) is started in the ignition order to make the corresponding gas generating agent (230) generate high-pressure gas to push the corresponding piston (240) to move, and the piston (240) pushes the fire extinguishing agent (250) in the corresponding transverse cavity, and when the pressure in the transverse cavity reaches a certain value, the corresponding sealing diaphragm (2621) is opened, and the fire extinguishing agent (250) is sprayed out of the corresponding piston plug outlet (262).

2. The fire suppression apparatus of claim 1, wherein, The transverse cavity comprises a piston cavity (223) accommodating the fire extinguishing agent (250) and a medicine cavity (221) communicating with the piston cavity (223) and accommodating the gas generating agent (230); the piston plug outlet (262) and the piston (240) are arranged at both ends of the piston cavity (223), and the ignition part of the actuator (210) is arranged at the opening end of the medicine cavity (221).

3. The fire suppression apparatus of claim 2, wherein, The transverse cavity further comprises a transition cavity (222) connected between the piston cavity (223) and the medicine cavity (221), and the diameters of the transition cavity (222) are smaller than those of the piston cavity (223) and the medicine cavity (221).

4. The fire suppression apparatus of any one of claims 1 to 3, wherein, The outlet assembly (260) comprises a plurality of piston plugs arranged one-to-one at one end of the transverse cavities, and the piston plug outlets (262) penetrate the piston plugs and communicate with the transverse cavities.

5. The fire suppression apparatus of claim 4, wherein, A first sealing ring (263) is arranged between the piston plug and the shell (220).

6. The fire suppression apparatus of claim 4, wherein, The adjacent two piston plugs and the uppermost and lowermost piston plugs in the longitudinal arrangement and the shell wall of the shell are fixed by a head (261).

7. The fire suppression apparatus of any one of claims 1 to 3, wherein, The starter (210) comprises a starter base (213) connected to the end of the transverse cavity, an electric detonator (215) arranged in the transverse cavity and fixed to the starter base (213), and a wire harness (211) with one end penetrating through the starter base (213) and connected to the electric detonator (215).

8. The fire suppression apparatus of claim 7, wherein, One end of the wire harness (211) is a DuPont wire connector, and the other end is an AMP connector, the DuPont wire connector is connected to the electric detonator (215), and the AMP connector is connected to the control host of the fire extinguishing system.

9. The fire suppression apparatus of any one of claims 1 to 3, wherein, The extinguishing agent contained in the transverse cavity is one of trimethoxy boron oxide hexacyclic ring, perfluorohexanone, 2-BTP, perfluoroiodobutane C4F9I, perfluoroiodooctane, carbon tetrachloride, water, water-based extinguishing agent and perfluorohexane, or a mixture of two of them.

10. The fire suppression apparatus of any one of claims 1 to 3, wherein, The piston plug and the outlet diaphragm (2621) are integrally injection molded by using polypropylene or polyethylene material; the thickness of the outlet diaphragm (2621) is 0.2mm-0.5mm, and the opening pressure is 1-3MPa.

11. The fire suppression apparatus of any one of claims 1 to 3, wherein, The number of the transverse cavities is at least 2.

12. The fire suppression apparatus of any one of claims 1 to 3, wherein, The gas generating agent in the transverse cavities uses at least two of the burning rate of 1-34mm / s.

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