Automatic spraying aerosol fire extinguishing device and fire extinguishing method

Abstract

This invention discloses an automatically dispensing aerosol fire extinguishing device and method, comprising a housing and a fire extinguishing agent column disposed within the housing. Both ends of the housing are sequentially provided with a cap, a sliding disc, and a sealing membrane from the outside to the inside. A triggering assembly is provided on the cap. A triggering agent, cooperating with the triggering assembly, is disposed between the cap and the sliding disc. Upon impact, the triggering agent generates gas and burns, producing heat. An ignition charge is provided on one side of the sliding disc, connected to one end of the fire extinguishing agent column via a thermal wire. A puncture ring, cooperating with the sealing membrane, is provided on the surface of the sliding disc. This invention improves the ignition speed, extinguishing speed, and extinguishing effect of the fire extinguishing device.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing technology, and in particular to an automatic aerosol fire extinguishing device and method. Background Technology

[0002] Aerosol fire extinguishing devices rely on the aerosol generator inside the device to produce a large amount of gaseous aerosol extinguishing agent after being activated, in order to extinguish fires. However, traditional aerosol fire extinguishing devices usually release the agent at a fixed point, and the direction of the release is often not close to or facing the fire source. Therefore, the ignition speed, extinguishing speed, and extinguishing effect are all reduced compared to the theoretical values. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an automatic aerosol fire extinguishing device and method to improve the ignition speed, extinguishing speed and extinguishing effect of the fire extinguishing device.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic aerosol fire extinguishing device, comprising a shell and a fire extinguishing agent column disposed within the shell. Both ends of the shell are provided with a cover, a sliding disc, and a sealing membrane in sequence from the outside to the inside. The cover is provided with a striker triggering component. A triggering agent that cooperates with the striker triggering component is disposed between the cover and the sliding disc. The triggering agent generates gas and burns to generate heat after being impacted. An ignition charge is provided on one side of the sliding disc. The ignition charge is connected to one end of the fire extinguishing agent column through a thermal wire. A puncture ring that cooperates with the sealing membrane is provided on the surface of the sliding disc.

[0005] Preferably, the sealing surface has a nozzle, and the position of the nozzle corresponds to the position of the puncture ring.

[0006] Preferably, the striking pin triggering assembly includes a cylindrical body fixedly connected to the cover. The top of the cylindrical body is closed and the bottom is open. A striking pin is provided inside the cylindrical body. The top of the striking pin is fixedly connected to the top of the cylindrical body through a temperature-sensing rupture element, and the bottom of the striking pin is fixedly connected to the inner side wall of the cylindrical body through a compression spring. A temperature-sensing through hole is provided in the area of ​​the side wall of the cylindrical body corresponding to the temperature-sensing rupture element.

[0007] Preferably, the temperature-sensitive rupture element is a fusible metal or a glass bulb structure.

[0008] Preferably, the triggering agent is surrounded by a limiting ring, one end of which is fixedly connected to the cap, and the other end is in contact with the surface of the sliding disc.

[0009] Preferably, the ignition charge is surrounded by an installation cylinder, and a baffle is provided inside the installation cylinder. The area on the surface of the sliding disc corresponding to the ignition charge and the triggering agent is a heat-conducting metal sheet structure.

[0010] Preferably, the triggering agent is potassium nitrate powder or a mixture of potassium nitrate powder and flammable substances, the extinguishing agent column is a column structure formed by pressing aerosol generating agent powder, and the ignition charge contains aerosol generating agent powder.

[0011] Preferably, the puncture ring is an open-ended annular structure, with a serrated edge on the side closest to the sealing membrane.

[0012] Preferably, the extinguishing agent column is located in the middle of the shell, and a silicone sleeve is provided in the area where the extinguishing agent column contacts the inner wall of the shell.

[0013] In addition, the present invention also discloses a fire extinguishing method for the above-mentioned automatically sprayed aerosol fire extinguishing device, which includes the following steps:

[0014] S1. When a fire occurs, the heat-sensing rupture component of the firing pin trigger assembly is heated and releases its limiting effect on the firing pin. Under the action of the compression spring, the firing pin impacts the triggering agent.

[0015] S2. The trigger agent generates gas and burns after being impacted, producing heat. During this process, on the one hand, the generated gas pushes the sliding disc towards the sealing membrane, causing the puncture ring to pierce the sealing membrane, making the inside and outside of the sealing membrane connected. On the other hand, the generated heat ignites the ignition charge, thereby igniting the end of the extinguishing agent column through the heat-sensitive wire.

[0016] S3. The extinguishing agent column burns to produce extinguishing substances, which then pass through the punctured part of the sealing membrane and are finally sprayed out from the nozzle on the cap surface to carry out the extinguishing process.

[0017] The beneficial effects of this invention are as follows: Traditional fire extinguishing devices only have one heat-sensing end. When a fire occurs, the heat-sensing end is sometimes located at the end furthest from the fire source, resulting in a slow or even difficult ignition process. However, the fire extinguishing device of this invention can sense temperature through trigger components at both ends. When a fire occurs, the two heat-sensing areas can greatly increase the ignition speed of the fire extinguishing device. At the same time, after both trigger components of the fire extinguishing device are activated by sensing temperature, the fire extinguishing device can spray extinguishing material from the nozzles at both ends. This accelerates the discharge of extinguishing material from the casing, thereby speeding up the fire extinguishing process and improving the fire extinguishing effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an automatic aerosol fire extinguishing device.

[0019] Figure 2 for Figure 1 An enlarged structural diagram of the area where the upper-middle-end trigger component is located. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-2 As shown, an automatic aerosol fire extinguishing device includes a housing 1 and a fire extinguishing agent column 2 disposed inside the housing 1. Both ends of the housing 1 are provided with a cover 3, a sliding disc 4, and a sealing membrane 5 from the outside to the inside. The cover 3 is provided with a striker triggering assembly 6. A triggering agent 7 that cooperates with the striker triggering assembly 6 is disposed between the cover 3 and the sliding disc 4. The triggering agent 7 generates gas and burns to generate heat after being impacted. An ignition charge 8 is provided on one side of the sliding disc 4. The ignition charge 8 is connected to one end of the fire extinguishing agent column 2 through a thermal wire 9. A puncture ring 10 that cooperates with the sealing membrane 5 is provided on the surface of the sliding disc 4.

[0022] Preferably, the surface of the cover 3 is provided with a nozzle 11, the position of which corresponds to the position of the puncture ring 10. With this design, when the puncture ring 10 punctures the sealing membrane 5, the extinguishing agent generated by the combustion of the extinguishing agent column 2 can pass through the punctured position of the sealing membrane 5 and then be sprayed out from the nozzle 11 on the surface of the cover 3.

[0023] Preferably, the striking pin trigger assembly 6 includes a cylindrical body 6.1 fixedly connected to the cap 3. The top of the cylindrical body 6.1 is closed, and the bottom is open. A striking pin 6.2 is provided inside the cylindrical body 6.1. The top of the striking pin 6.2 is fixedly connected to the top of the cylindrical body 6.1 through a temperature-sensing rupture element 6.3, and the bottom of the striking pin 6.2 is fixedly connected to the inner side wall of the cylindrical body 6.1 through a compression spring 6.4. A temperature-sensing through hole 6.5 is provided in the side wall area of ​​the cylindrical body 6.1 corresponding to the temperature-sensing rupture element 6.3. In this embodiment, the temperature-sensing through hole 6.5 can sense the external temperature. When the temperature is too high, the temperature-sensing rupture element 6.3 will rupture, thereby releasing the limiting effect on the striking pin 6.2. Under the action of the elastic force of the compression spring 6.4, the striking pin 6.2 will strike the triggering agent 7, thereby causing the triggering agent 7 to generate gas and heat.

[0024] Preferably, the temperature-sensitive rupture element 6.3 is a fusible metal or a glass bulb structure. Fusible alloys refer to alloys with a melting point below 232°C, which are grayish-white lustrous metals, a type of fusible alloy based on bismuth, with melting points of various options such as 47°C, 70°C, 92°C, and 120°C; while the glass bulb is a temperature-sensitive glass ball structure used for fire fighting, which will rupture when it senses the temperature of the flame.

[0025] Preferably, a limiting ring 7.1 is provided around the triggering agent 7. One end of the limiting ring 7.1 is fixedly connected to the cap 3, and the other end contacts the surface of the sliding disk 4. This design can protect the triggering agent 7 from scattering and prevent the sliding disk 4 from moving and squeezing the triggering agent 7 during transportation. At the same time, when the triggering agent 7 is ignited, it can guide the gas to be sprayed towards the sliding disk 4, so that the gas can smoothly push the sliding disk 4 towards the sealing film 5.

[0026] Preferably, the ignition charge 8 is surrounded by an installation cylinder 8.1, and a baffle 8.2 is provided inside the installation cylinder 8.1. The area on the surface of the sliding disk 4 corresponding to the ignition charge 8 and the triggering agent 7 is a heat-conducting metal sheet structure. The baffle 8.2 and the installation cylinder 8.1 can limit the ignition charge 8 to prevent it from falling off; and the heat-conducting metal sheet structure on the surface of the sliding disk 4 allows the heat generated by the triggering agent 7 to be quickly conducted along the surface of the sliding disk 4 to the ignition charge 8, enabling it to be successfully ignited.

[0027] In addition, in this embodiment, small channels are provided at the positions where the thermal wire 9 passes through the baffle 8.2 and the sealing film 5, for the thermal wire 9 to pass through.

[0028] Preferably, the triggering agent 7 is potassium nitrate powder or a mixture of potassium nitrate powder and flammable substances, the extinguishing agent column 2 is a column structure formed by pressing aerosol generating agent powder, and the ignition charge 8 contains aerosol generating agent powder.

[0029] Preferably, the puncture ring 10 is an open-ended annular structure with a serrated edge near the sealing membrane 5. This shape of the puncture ring 10 allows it to quickly puncture the sealing membrane 5 upon contact, thus forming a channel. Furthermore, although the sliding disc 4 in this embodiment is slidably connected to the inner wall of the housing 1, it exhibits a certain degree of damping friction. Therefore, during normal transport, the sliding disc 4 will not slide up and down. Only when the agent 7 is impacted and generates gas can the resulting gas pressure impact propel the sliding disc 4 towards the sealing membrane 5.

[0030] Preferably, the extinguishing agent column 2 is located in the middle of the housing 1, and a silicone sleeve 12 is provided in the area where the extinguishing agent column 2 contacts the inner wall of the housing 1. By providing the silicone sleeve 12, the extinguishing agent column 2 can be insulated to prevent the high temperature generated during combustion of the extinguishing agent column 2 from being conducted to the surface of the housing 1.

[0031] In addition, the present invention also discloses a fire extinguishing method for the above-mentioned automatically sprayed aerosol fire extinguishing device, which includes the following steps:

[0032] S1. When a fire occurs, the heat-sensing rupture element 6.3 of the firing pin trigger assembly 6 is heated and releases its limiting effect on the firing pin 6.2. Under the action of the spring force of the compression spring 6.4, the firing pin 6.2 impacts the triggering agent 7.

[0033] S2. When the trigger agent 7 is impacted, it generates gas and burns to produce heat. In this process, on the one hand, the gas generated pushes the sliding disk 4 to move towards the sealing membrane 5, causing the puncture ring 10 to puncture the sealing membrane 5, and the inside and outside of the sealing membrane 5 are connected. On the other hand, the heat generated causes the ignition pack 8 to be ignited, thereby igniting the end of the extinguishing agent column 2 through the heat-sensitive wire 9.

[0034] S3, the extinguishing agent column 2 burns to produce extinguishing material, which then passes through the punctured part of the sealing membrane 5 and is finally sprayed out from the nozzle 11 on the surface of the cap 3 to carry out the extinguishing process.

[0035] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An automatic aerosol fire extinguishing device, comprising a housing (1) and a fire extinguishing agent column (2) disposed within the housing (1), characterized in that: The housing (1) has a cover (3), a sliding disc (4) and a sealing membrane (5) arranged sequentially from the outside to the inside at both ends. The cover (3) is provided with a striker trigger assembly (6). A triggering agent (7) that cooperates with the striker trigger assembly (6) is provided between the cover (3) and the sliding disc (4). The triggering agent (7) generates gas and burns to generate heat after being impacted. An ignition pack (8) is provided on one side of the sliding disc (4). The ignition pack (8) is connected to one end of the extinguishing agent column (2) through a thermal wire (9). A puncture ring (10) that cooperates with the sealing membrane (5) is provided on the surface of the sliding disc (4). A nozzle (11) is opened on the surface of the cover (3). The area on the surface of the sliding disc (4) corresponding to the ignition pack (8) and the triggering agent (7) is a heat-conducting metal sheet structure.

2. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The position of the nozzle (11) corresponds to the position of the puncture ring (10).

3. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The firing pin trigger assembly (6) includes a cylindrical body (6.1) fixedly connected to the cover (3). The top of the cylindrical body (6.1) is closed and the bottom is open. A firing pin (6.2) is provided inside the cylindrical body (6.1). The top of the firing pin (6.2) is fixedly connected to the top of the cylindrical body (6.1) through a temperature-sensing rupture element (6.3). The bottom of the firing pin (6.2) is fixedly connected to the inner wall of the cylindrical body (6.1) through a compression spring (6.4). A temperature-sensing through hole (6.5) is opened in the side wall area of ​​the cylindrical body (6.1) corresponding to the temperature-sensing rupture element (6.3).

4. The automatic aerosol fire extinguishing device according to claim 3, characterized in that: The temperature-sensitive rupture element (6.3) is a fusible metal or glass bulb structure.

5. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The triggering agent (7) is surrounded by a limiting ring (7.1). One end of the limiting ring (7.1) is fixedly connected to the cap (3), and the other end is in contact with the surface of the sliding disk (4).

6. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The ignition charge (8) is surrounded by an installation cylinder (8.1), and a baffle (8.2) is provided inside the installation cylinder (8.1).

7. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The triggering agent (7) is potassium nitrate powder or a mixture of potassium nitrate powder and flammable substances. The extinguishing agent column (2) is a column structure made of aerosol generating agent powder. The ignition pack (8) contains aerosol generating agent powder.

8. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The puncture ring (10) is an open-ended annular structure, with a serrated edge on the side closest to the sealing membrane (5).

9. The automatic aerosol fire extinguishing device according to claim 1, characterized in that: The extinguishing agent column (2) is located in the middle of the shell (1), and a silicone sleeve (12) is provided in the area where the extinguishing agent column (2) contacts the inner wall of the shell (1).

10. A method for extinguishing a fire using an automatically dispensing aerosol fire extinguishing device as described in any one of claims 1 to 9, characterized in that: It includes the following steps: S1. When a fire occurs, the heat-sensing rupture element (6.3) of the firing pin trigger assembly (6) is heated and releases the limiting effect on the firing pin (6.2). The firing pin (6.2) impacts the triggering agent (7) under the action of the compression spring (6.4). S2. The trigger agent (7) generates gas and burns after being impacted, generating heat. In this process, on the one hand, the generated gas pushes the sliding disc (4) to move towards the sealing membrane (5), causing the puncture ring (10) to puncture the sealing membrane (5), and the inside and outside of the sealing membrane (5) are connected. On the other hand, the generated heat causes the ignition pack (8) to be ignited, thereby igniting the end of the extinguishing agent column (2) through the heat-sensitive wire (9). S3, the extinguishing agent column (2) burns to produce extinguishing substances, which then pass through the punctured part of the sealing membrane (5) and finally spray out from the nozzle (11) on the surface of the cap (3) to carry out the extinguishing process.

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