Aerosol gas dispenser

Abstract

To provide an aerosol gas emitter capable of stably and continuously releasing aerosol gas into a protected area, the aerosol gas emitter includes: a fire extinguishing agent that generates aerosol through thermal decomposition; a housing for containing the fire extinguishing agent; an activation component that initiates the thermal decomposition reaction of the fire extinguishing agent; and a release port that sprays the generated aerosol into the protected area. The fire extinguishing agent includes a first agent opposite the activation component and a second agent surrounding the first agent.

Description

Technical Field

[0001] This invention relates to an aerosol gas release device. Background Technology

[0002] The applicant disclosed a fire extinguishing agent composition in Patent Document 1 (International Publication No. WO2017 / 134703) that can extinguish and suppress fires by generating aerosols through combustion.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. WO2017 / 134703 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] The applicant has continued to develop and commercialize fire extinguishing equipment incorporating extinguishing agent compositions, and has manufactured an aerosol gas release device. For fire suppression, the aerosol gas release device preferably provides a stable and continuous release of aerosol gas into the protected area.

[0008] Therefore, the object of the present invention is to provide an aerosol gas emitter capable of stably and continuously releasing aerosol gas into a protected area.

[0009] Technical means to solve the problem

[0010] To address the aforementioned technical problems, one embodiment of the present invention provides an aerosol gas release device, comprising: a fire extinguishing agent that generates aerosol through thermal decomposition; a housing for receiving the fire extinguishing agent; an activation component for initiating the thermal decomposition reaction of the fire extinguishing agent; and a release port for discharging the generated aerosol to the outside of the housing, wherein the fire extinguishing agent includes at least one first agent opposite to the activation component and a plurality of second agents surrounding the at least one first agent.

[0011] In the aerosol gas release device of the present invention, the extinguishing agent preferably further comprises a plurality of third agents surrounding the plurality of second agents.

[0012] Furthermore, in the aerosol gas emitter of the present invention, the second agent and the third agent are preferably arranged in a concentric circle with the at least one first agent as the center.

[0013] In the aerosol gas emitter of the present invention, the at least one first agent is preferably substantially cylindrical.

[0014] Furthermore, in the aerosol gas emitter of the present invention, the second agent is preferably in a generally rectangular parallelepiped shape.

[0015] Furthermore, in the aerosol gas emitter of the present invention, it is preferable that the release port has a protrusion extending inward from the inner edge of the release port.

[0016] The effects of the invention

[0017] According to the present invention, since the second agent surrounds the first agent opposite to the activating component, a certain amount of time is required for the thermal decomposition reaction of the first agent to reach the second agent. Therefore, the generation of aerosol can be sustained for the desired time, and thus the aerosol gas emitter can stably and continuously release aerosol gas into the protected area. Attached Figure Description

[0018] Figure 1 This is an exploded view showing the overall structure of an aerosol gas release device 1 according to an embodiment of the present invention.

[0019] Figure 2 These are front, side, and top views showing the outline of the releaser body 10.

[0020] Figure 3 This is a partial cross-sectional view showing the internal structure of the releaser body 10.

[0021] Figure 4 These are front views, partial cross-sectional side views, and top views showing the general outline of the housing 15.

[0022] Figure 5 These are front view, side view, and AA-line cross-sectional view of the release port 17 and the inspection port 19.

[0023] Figure 6 This is a front view showing the outline of the inspection port 19 and a partial cross-sectional side view.

[0024] Figure 7 This is a diagram illustrating the preparation of fire extinguishing agent 13.

[0025] Figure 8 It is a three-dimensional diagram showing the shape of drugs 131 to 134.

[0026] Figure 9 This is a diagram showing the general outline of the release of aerosol gas in aerosol gas emitter 1. Detailed Implementation

[0027] Hereinafter, representative embodiments of the aerosol gas emitter and its usage method of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these drawings. Furthermore, the drawings are used for conceptual illustration of the present invention; therefore, for ease of understanding, dimensions, proportions, or quantities may sometimes be exaggerated or simplified as needed.

[0028] The aerosol gas release device 1 is installed in a building in an area that is to be extinguished (protected area) and sprays aerosol into the protected area in the event of a fire. For example, the aerosol gas release device 1 is installed on the ceiling or wall of a structure.

[0029] like Figure 1 As shown, the aerosol gas emitter 1 has an emitter body 10. The material of the emitter body 10 can be metal or its alloy, with stainless steel being preferred. In this embodiment, the emitter body 10 has an outer diameter of approximately 500 mm and a thickness of approximately 150 mm, but the invention is not limited to this.

[0030] like Figure 2 and Figure 3 As shown, the release body 10, as a component, may include an activation component 11, a fire extinguishing agent 13, a housing 15, a release port 17, and an inspection port 19. These components will be described in turn below.

[0031] The starting component 11 is the component that initiates the reaction of the extinguishing agent 13, and can also be called an ignition device.

[0032] The starting component 11 mainly consists of an electric heater and an initiating agent (ignition agent) (both not shown). The initiating agent reacts with the heating of the electric heater to generate heat, thereby initiating the thermal decomposition reaction of the extinguishing agent 13.

[0033] The extinguishing agent 13 generates an aerosol through thermal decomposition. To inhibit moisture absorption and protect surfaces, the extinguishing agent 13 can be packaged with a protective film such as aluminum. In this embodiment, the total weight of the extinguishing agent 13 mounted on one aerosol gas release device 1 can be set to approximately 2.0 to 2.2 kg, but is not limited thereto.

[0034] The following describes fire extinguishing agent 13 in more detail. As a fire extinguishing agent, any agent that generates fire-extinguishing aerosols (such as potassium free radicals) is acceptable regardless of its composition.

[0035] Preferably, the extinguishing agent composition contains 20-50% by mass of fuel (component A) and 80-50% by mass of chlorate (component B), and further contains 6-1000 parts by mass of potassium salt (component C) relative to 100 parts by mass of the total amount of the fuel and the chlorate, with a thermal decomposition start temperature in the range of over 90°C to 260°C.

[0036] The fuel, component A, is used to generate heat energy by burning together with chlorate, component B, and to produce aerosols (potassium free radicals) derived from potassium salt, component C.

[0037] The fuel used as component A is preferably selected from at least one of dicyandiamide, nitroguanidine, guanidine nitrate, urea, melamine, melamine cyanurate, Avicel, guar gum, sodium carboxymethyl cellulose, potassium carboxymethyl cellulose, ammonium carboxymethyl cellulose, nitrocellulose, aluminum, boron, magnesium, magnesium-aluminum alloy, zirconium, titanium, titanium hydride, tungsten, and silicon.

[0038] Component B, chlorate, is a strong oxidizing agent and is used to generate heat energy by burning fuel of component A, producing aerosols (potassium free radicals) derived from potassium salts of component C.

[0039] The chlorate that is component B is preferably selected from at least one of potassium chlorate, sodium chlorate, strontium chlorate, ammonium chlorate and magnesium chlorate.

[0040] Here, the proportions of fuel component A and chlorate component B per 100% by mass are as follows:

[0041] Ingredient A: 20-50% by mass

[0042] Preferably 25-40% by mass

[0043] More preferably 25-35% by mass

[0044] Component B: 80~50% by mass

[0045] Preferably 75-60% by mass

[0046] More preferably 75-65% by mass

[0047] Next, the potassium salt of component C is used to generate aerosols (potassium free radicals) by utilizing the heat energy generated by the combustion of components A and B.

[0048] The potassium salt of component C is preferably selected from at least one of potassium acetate, potassium propionate, monopotassium citrate, dipotassium citrate, tripotassium citrate, monopotassium trihydroethylenediaminetetraacetic acid, dipotassium dihydroethylenediaminetetraacetic acid, tripotassium monohydroethylenediaminetetraacetic acid, tetrapotassium tetraethylenediaminetetraacetic acid, potassium hydrogen phthalate, dipotassium phthalate, potassium hydrogen oxalate, dipotassium oxalate, and potassium bicarbonate.

[0049] The proportion of component C is preferably 6 to 1000 parts by mass relative to the total mass of components A and B, and more preferably 10 to 900 parts by mass.

[0050] Furthermore, the thermal decomposition initiation temperature of the extinguishing agent composition is in the range of 90°C to 260°C, preferably 150°C to 260°C. This range of thermal decomposition initiation temperature can be adjusted by combining the above-mentioned components A, B, and C in the above-mentioned proportions.

[0051] The extinguishing agent composition receives heat from the ignition device, causing components A and B to ignite and burn automatically, generating aerosols (potassium free radicals) from component C.

[0052] In this embodiment, the fire extinguishing agent composition is used as a molded article. The apparent density of the molded article is preferably 1.0 g / cm³ or more, and it can be made into granules, granules of a desired shape (cylindrical shape, etc.), tablets, spheres, discs, etc.

[0053] In the illustrated example, four shapes of medicine 131-134 are used. That is, as shown... Figure 8 As shown, reagent 131 (used as the first reagent) and reagent 134 (used as the test reagent) are generally cylindrical. Reagents 132 and 133 (used as the second and third reagents) are generally cuboid in shape.

[0054] like Figure 3 As shown, agent 131 is disposed approximately in the center of the releaser body 10, opposite to the actuation member 11. Agent 131 may have a recess for insertion into the front end of the actuation member 11. Agent 131 has a larger outer diameter and thickness (height) than agent 134.

[0055] In order to be received into the inspection port 19, the agent 134 has an outer diameter and height that are smaller than the inner diameter and height of the recess 191.

[0056] Agents 132 and 133 are arranged in a generally concentric circle within the dispenser body 10. In this embodiment, agents 132 and 133 are arranged in a double arrangement surrounding agent 131, but the arrangement is not limited to this. Figure 7 In the example, two kinds of drugs 132 and 133 with different circumferential widths are arranged in the inner ring.

[0057] The reagents 132 and 133 that form the inner ring are disposed separately from reagent 131. This is to ensure sufficient time from the start of the reaction of reagent 131 to the start of the reaction of reagents 132 and 133.

[0058] The agent 132 forming the outer ring is uniformly arranged at intervals wider than those of the inner ring. This is to ensure that the amount of agent in the inner and outer rings is approximately equal, so that the internal pressure of the releaser body 10 during aerosol generation is approximately uniform over time, thereby ensuring a stable and continuous release of aerosol gas.

[0059] like Figure 7 and Figure 8As shown in (B) and (C), the circumferential width of the face of agents 132 and 133 facing the center of the housing 15 (or agent 131) is narrower than the circumferential width of the face on the opposite side (i.e., the face facing the peripheral wall of the housing 15). Therefore, agents 132 and 133 can be said to be approximately fan-shaped. With this shape, agents 132 and 133 can be efficiently (i.e., space-savingly) housed within the housing 15.

[0060] Therefore, by arranging reagents 131, 132, and 133 in a roughly concentric circle, the thermal decomposition reaction initiated by reagent 131 can be spread as uniformly as possible to reagents 132 and 133, and the reaction time of the reagents can be sufficiently extended. Thus, sufficient quantity and duration of aerosol spraying can be ensured.

[0061] In addition, such as Figure 8 As shown in (B) and (C), the width (circumferential length) of agent 132 is greater than the width of agent 133. By using such different agents 132 and 133, the extinguishing agent 13 can be configured sufficiently and appropriately according to the size of the housing 15.

[0062] Next, the housing 15 will be described.

[0063] The housing 15 stores the extinguishing agent 13 in an isolated manner from external gases. The housing 15 is generally cylindrical and has an internal space for storing the extinguishing agent 13. In this embodiment, the outer diameter of the housing 15 is approximately 500 mm, but it is not limited thereto.

[0064] For example, Figure 4 As shown in (A) and (B), a plurality of pins 153 are provided inside the housing 15. The plurality of pins 153 may, for example, be configured in a generally concentric circle shape. Figure 7 As shown, the four peripheral faces of the generally rectangular-shaped agents 132 and 133 (excluding the peripheral wall face of the agent 132 forming the outer ring) are respectively opposite to the pins 153. This restricts the movement of the agents 132 and 133, positioning them in the desired positions.

[0065] For example, Figure 5 As shown in (A), a release port 17 and an inspection port 19 are provided on the front surface 151 (the side of the protected area, or, may also be called the cover) of the housing 15.

[0066] The release port 17 is an opening for releasing aerosol gas inside the housing 15 to the outside. The release port 17 is, for example, a generally circular hole, and preferably multiple release ports are provided, but there may be only one release port 17.

[0067] The release port 17 may have a protrusion 172 projecting from the inner edge of the release port 17 toward the center of the hole. By forming the protrusion 172 in the release port 17, the release port 17 opens uniformly, thereby improving the diffusion of the released aerosol gas. In addition, the protrusion 172 is useful for suppressing the sound that accompanies the bursting of the release port 17, which is advantageous for the installation of the aerosol gas release device 1, for example, in a server room.

[0068] In the illustrated example, all release ports 17 have protrusions 172, but there may also be release ports 17 without protrusions 172.

[0069] For example, the protrusion 172 is fan-shaped. Figure 5 The angle α of the protrusion 172 shown is less than 180 degrees, more preferably an acute angle, and even more preferably 30 to 40 degrees. In the illustrated example, all protrusions 172 have the same angle α, but each release port 17 may have a different angle.

[0070] The dimensions of the protrusion 172 can be appropriately designed according to, for example, the dimensions of the aerosol gas emitter 1 and the release port 17, the aerosol gas injection conditions, etc.

[0071] In the illustrated example, the protrusion 172 is of approximately the same size, with its front end facing radially (i.e., outward) toward the front surface 151, but is not limited thereto.

[0072] From the viewpoint of uniformly spraying aerosol gas into the protected area, it is preferable that the release port 17 is arranged in a concentric circle on the front surface 151 of the housing 15 and is equally spaced in the circumferential direction.

[0073] For example, the inner diameter of a release port 17 is 40 mm, and 16 release ports 17 are arranged on the front surface 151 of the housing 15, with a total area of ​​about 20,000 [mm²], but not limited thereto.

[0074] The release port 17 is always closed by the sheet 171 to seal the release body 10. As the internal pressure of the housing 15 increases, the sheet 171 is pushed towards the release port 17, comes into contact with the protrusion 172, and ruptures. This opens the release port 17, allowing the aerosol gas to be released to the outside. The sheet 171 can preferably be a thin sheet or film made of metal such as aluminum, but is not limited to this.

[0075] Inspection port 19 is a component used to check the storage condition of extinguishing agent 13. In the illustrated example, from the point of view of ease of inspection, inspection port 19 is provided on the front surface 151, but inspection port 19 can be provided at any part of housing 15 as long as its interior has the same environment as the interior of housing 15.

[0076] like Figure 6 As shown, the inspection port 19 can be configured as a recess 191 formed on the front surface 151 of the housing 15 and a plug 193 that closes the opening of the recess 191.

[0077] A predetermined amount of inspection agent 134 is placed inside the recess 191. The inspection agent 134 is sealed from external gas by a plug 193 and a sealing element 195 such as an O-ring. The plug 193 can be configured, for example, as a bolt that engages with a groove formed on the inner circumferential surface of the recess 191. The inspection agent 134 is in a small amount compared to other agents 131-133, for example, about 2g by weight is sufficient.

[0078] The interior of the inspection port 19 is connected to the interior (reception space) of the housing 15 via a hole formed in the bottom or peripheral wall of the inspection port 19. That is, the inspection agent 134 is in the same environment as the extinguishing agent 13. Therefore, by investigating the inspection agent 134, the condition of the extinguishing agent 13 can be determined.

[0079] The reagent 134 used for inspection is removed during the inspection of the aerosol gas emitter 1. In this embodiment, nine inspection ports 19 are installed on one aerosol gas emitter 1, but there is no limit to the number of inspection ports 19.

[0080] Returning to the description of aerosol gas emitter 1.

[0081] like Figure 1 As shown, the release body 10 is housed in a storage box 20 for its protection and installation on the mounting surface. The storage box 20 includes a generally plate-shaped back plate 21, a storage box housing 23 with openings facing the front (protected area side) and the rear (opposite side of the front), and a storage box cover 25.

[0082] The backplate 21 is a roughly square plate. One side of the backplate 21 is fixed to the mounting surface, and the release body 10 is mounted on the other side. The backplate 21 is made of metal or its alloy, for example, stainless steel.

[0083] The storage box housing 23 is a roughly square frame that surrounds and protects the release unit body 10 and is mounted on the back panel 21. The storage box housing 23 is made of metal or its alloy, such as stainless steel.

[0084] The storage box cover 25 is a sheet metal made of generally rectangular perforated metal 251. The material of the storage box cover 25 is metal or its alloy, such as stainless steel. The diameter of each hole formed in the perforated metal 251 is preferably larger than the diameter of the release port 17, and it is also preferred that they are arranged regularly at predetermined intervals.

[0085] The aerosol gas release device 1 is set up according to the following steps.

[0086] That is, the back plate 21 is installed on the mounting surface. Next, the release body 10 is fixed to the back plate 21, and the storage box housing 23 is fixed to the back plate 21. Then, the storage box cover 25 is fixed to the front surface of the storage box housing 23.

[0087] The following is for reference Figure 9 Explain the operating procedure of aerosol gas release device 1.

[0088] When a fire occurs in the protected area, a starting current is circulated through the wires of the starting component 11 based on a control signal from a control panel (not shown). This causes the electric heater (not shown) to heat up, and the starting agent to react.

[0089] Starting with the heat of reaction of the initiator (not shown), the central extinguishing agent 13, i.e., agent 131, begins to react. Then, the reaction spreads to all the surrounding extinguishing agents 13 (i.e., agents 132 and 133), and the entire quantity of extinguishing agents 13 carried in the aerosol gas release device 1 reacts. By carefully configuring the extinguishing agents 13 in this way, aerosol generation can be stably and continuously achieved.

[0090] The reaction of the extinguishing agent 13 produces aerosol gas, which fills the housing 15 of the releaser body 10. As a result, the internal pressure of the housing 15 increases.

[0091] Then, when the internal pressure of the housing 15 exceeds a predetermined threshold, the sheet 171 of the release port 17 ruptures, opening the release port 17. As a result, the aerosol gas is released from the release port 17 through the housing cover 25 into the protected area, thereby extinguishing or suppressing the flame in the protected area.

[0092] Next, the steps for inspecting aerosol gas emitter 1 will be explained.

[0093] Checkups can be performed regularly, such as every 6 months or once a year, or irregularly.

[0094] The operator opens an inspection port 19 to remove the inspection agent 134 and confirms or inspects its condition through analysis or visual inspection. Since the inspection port 19 is located on the front surface 151 of the housing 15, the operator can easily remove it. Furthermore, the removed plug 193 can be reinstalled in the inspection port 19, but the previously removed inspection agent 134 is not returned to its original position.

[0095] The inspection items for reagent 134 may be any one or any combination of the following, but are not limited to: measurement of size and weight, visual confirmation of the presence of cracks, deformation, scratches, etc., measurement of moisture content, measurement of potassium content, aerosol gas generation performance, and measurement of potassium concentration in aerosol gas.

[0096] If the removed test agent 134 is in good condition, it can be said that the test agent 134 and the extinguishing agent 13 inside the housing 15 are in essentially the same environment, and therefore it can be assessed that the extinguishing agent 13 has not malfunctioned. Conversely, if the removed test agent 134 is in poor condition, it can be assessed that the extinguishing agent 13 inside the housing 15 may have malfunctioned, and the aerosol gas release device 1 or the extinguishing agent 13 inside the housing 15 can be replaced.

[0097] Thus, since an inspection port 19 is provided on the front surface 151 of the releaser body 10, the inspection of the fire extinguishing agent 13 can be carried out in a simple way by opening the inspection port 19 to remove the fire extinguishing agent 13 for inspection and conduct an investigation.

[0098] The above describes an aerosol gas emitter and its usage method as one embodiment of the present invention. However, the present invention is not limited thereto. As long as the technical concept of the present invention is present, various design changes can be made, and all such design changes are included within the technical scope of the present invention.

[0099] In this embodiment, different shapes of extinguishing agents 131 to 133 are used, but it is also possible to use only one shape of extinguishing agent (e.g., agent 131).

[0100] Explanation of reference numerals in the attached figures

[0101] 1 Aerosol Gas Release Device

[0102] 10. Release device body

[0103] 11. Starting components

[0104] 13 Fire extinguishing agents

[0105] 131~134 Medicines

[0106] 15. Housing

[0107] 17. Release port

[0108] 19 Inspection Port

[0109] 191 concavity

[0110] 193 bolts

[0111] 20 storage boxes

[0112] 21 Back panel

[0113] 23 Storage box shell

[0114] 25. Storage box cover.

Claims

1. An aerosol gas release device, characterized in that, include: Fire extinguishing agents that generate aerosols through thermal decomposition; A housing for the fire extinguishing agent; An initiating component that initiates the thermal decomposition reaction of the extinguishing agent; and The generated aerosol is ejected to a release port outside the housing. The extinguishing agent includes at least one first agent opposite to the activation component, and a plurality of second agents surrounding the at least one first agent.

2. The aerosol gas release device as described in claim 1, characterized in that, The extinguishing agent also includes a plurality of third agents surrounding the plurality of second agents.

3. The aerosol gas release device as described in claim 2, characterized in that, The second and third agents are arranged in concentric circles with the at least one first agent as the center.

4. The aerosol gas emitter as described in claim 1, characterized in that, The at least one first agent is generally cylindrical.

5. The aerosol gas emitter as described in claim 1, characterized in that, The second agent is roughly rectangular in shape.

6. The aerosol gas emitter as described in claim 1, characterized in that, The release port has a protrusion that extends from the inner edge of the release port.

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