An apparatus and a fire extinguishing method for extinguishing fire by using aerosol in cooperation with dry powder

Abstract

The present invention discloses a device and a fire extinguishing method for aerosol-assisted dry powder fire extinguishing, which includes a housing. A spraying part is arranged at the front end of the housing. A piston that is slidably matched with the housing is arranged inside the housing. Dry powder fire extinguishing agent is arranged between the piston and the spraying part. A gas generating agent is arranged between the piston and the rear end of the housing. A discharge channel is also arranged on the outer periphery of the housing near the spraying part. A discharge groove is opened on the side part of the housing near the inlet of the discharge channel. The bottom of the discharge groove is hinged to the bottom of the reversible back blade guide groove. The periphery of the discharge groove is covered with a sealing coating layer. In the present invention, the gas and heat generated by the gas generating agent will be shunted into the discharge groove and the discharge channel through the flipping and cutting process of the reversible back blade guide groove, and finally ejected from the top outlet of the discharge channel, which can cooperate in the fire extinguishing process.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing devices, and specifically refers to a device and a fire extinguishing method for extinguishing fires by synergistically using aerosol and dry powder. Background Art

[0002] At present, when the current dry powder fire extinguishing agent is ejected by using a gas generating agent, since the gas generating agent (such as an aerosol generating agent) generates gas quickly, generates a large amount of gas and also generates high temperature at the same time, and all the gas acts on the dry powder fire extinguishing agent. On the one hand, it will make the dry powder have too high kinetic energy and have a certain danger. On the other hand, all the heat generated by the gas generating agent acting on the dry powder will reduce the fire extinguishing ability of the dry powder. In addition, the large amount of gas disturbing inside the device will also make the dry powder spraying uneven. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above deficiencies and provide a device and a fire extinguishing method for extinguishing fires by synergistically using aerosol and dry powder to solve the problems raised in the background art.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a device for extinguishing fires by synergistically using aerosol and dry powder, including a housing, a spraying part is arranged at the front end of the housing, a piston slidably matched with the housing is arranged inside the housing, dry powder fire extinguishing agent is arranged between the piston and the spraying part, a gas generating agent is arranged between the piston and the rear end of the housing, a release channel is also arranged on the outer periphery of the housing near the spraying part, a release groove is opened on the side part of the housing near the inlet of the release channel, the bottom of the release groove is hinged to the bottom of the reversibly flip-up back blade guide groove, and a sealing coating layer covers the periphery of the release groove.

[0005] Preferably, the gas generating agent is connected to one end of a starting component, and the other end of the starting component passes through the rear end of the housing.

[0006] Preferably, the reversibly flip-up back blade guide groove includes a flip plate hinged to the bottom of the release groove, groove plates are arranged on both sides of the flip plate, and blades are arranged on the outer sides of the groove plates.

[0007] Preferably, the flip plate is of a rectangular plate-like structure, and the release groove is of a rectangular groove opening structure matching the flip plate.

[0008] Preferably, a blade groove matching the top of the blade is opened at the bottom of the release channel, and the top of the blade is higher than the top of the flip plate and the top of the sealing coating layer by a certain distance.

[0009] Preferably, an arc-shaped groove is opened on the inner side of the groove plate, an impact shaft is fixedly arranged on the side edge of the top of the piston, and the impact shaft is matched with the arc-shaped groove.

[0010] Preferably, a limiting plate is provided on the inner side of the housing corresponding to the height of the discharge groove. The bottom of the piston is open and filled with a wire mesh inside. The side of the piston is provided with a first discharge hole, which cooperates with the discharge groove, and the top of the piston is provided with a second discharge hole.

[0011] Preferably, the housing is of a cylindrical structure. The spraying part includes a front cover connected to the front end of the housing, and a plurality of spray holes are provided on the surface of the front cover.

[0012] Preferably, a wire mesh is further provided on the inner wall of the housing near the front cover, and a buffer chamber is formed between the wire mesh and the front cover.

[0013] In addition, the present invention also discloses a fire extinguishing method for the above-mentioned device for extinguishing fire by aerosol cooperating with dry powder, which includes the following steps:

[0014] S1. When a fire breaks out, the starting component ignites the gas generating agent;

[0015] S2. The gas generating agent burns to generate gas, and then pushes the piston to move upward. During the upward movement of the piston, the dry powder fire extinguishing agent is pressed out from the spraying part to carry out the fire extinguishing process;

[0016] S3. When the piston moves to the height where the reversible back edge guide groove is located, it will impact the reversible back edge guide groove and push it to rotate outward;

[0017] S4. During the outward rotation of the reversible back edge guide groove, it will cut the sealing coating layer on the surface of the discharge groove, thereby exposing the discharge groove. After the reversible back edge guide groove stops rotating, a connection channel is formed to make the discharge groove communicate with the discharge channel;

[0018] S5. The gas generated by the combustion of the gas generating agent passes through the first discharge hole provided on the side of the piston and enters the discharge channel through the discharge groove, and finally sprays out from the top outlet of the discharge channel to cooperate in the fire extinguishing process.

[0019] The beneficial effects of the present invention:

[0020] 1. In the present invention, the gas and heat generated by the gas generating agent will be shunted into the discharge groove and the discharge channel through the flipping and cutting process of the reversible back edge guide groove, and finally spray out from the top outlet of the discharge channel, which can cooperate in the fire extinguishing process; the above process makes the gas generated by the gas generating agent not all act on the dry powder fire extinguishing agent, so that the dry powder will not have too high kinetic energy, and the danger is greatly reduced. Moreover, the heat generated by the gas generating agent will not all act on the dry powder, avoiding the decline of the fire extinguishing ability of the dry powder. In addition, the disturbance process of the gas to the dry powder will also be reduced, avoiding uneven spraying.

[0021] 2. When the flip plate of the flip-back blade guide groove in the present invention is pressed and rotates, it can drive the groove plate and the blade to rotate together. The blade can cut through the sealing coating layer, thereby exposing the discharge groove. And after the rotation is completed, the flip-back blade guide groove forms a connection channel to conduct the discharge groove and the discharge channel, enabling the gas generated by the gas generating agent to be discharged from this position, completing the collaborative fire extinguishing process. The overall structure is ingeniously designed and has obvious effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a device for extinguishing fire by aerosol and dry powder in cooperation;

[0023] Figure 2 is Figure 1 an enlarged structural diagram of the area where the left flip-back blade guide groove is located in

[0024] Figure 3 is Figure 2 a left view structural diagram of the blade groove in

[0025] Figure 4 is Figure 1 a three-dimensional structural diagram of the left flip-back blade guide groove in

[0026] Figure 5 is Figure 1 an enlarged structural diagram of the piston in

[0027] Figure 6 is Figure 1 a structural diagram when the piston moves to the height where the flip-back blade guide groove is located in

[0028] Figure 7 is Figure 1 a top view structural diagram of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0030] As Figures 1 to 7 shown, a device for extinguishing fire by aerosol and dry powder in cooperation includes a housing 1. A spraying part 2 is provided at the front end of the housing 1. A piston 3 is arranged in the housing 1 and is slidably matched with the housing 1. A dry powder fire extinguishing agent 4 is arranged between the piston 3 and the spraying part 2. A gas generating agent 5 is arranged between the piston 3 and the rear end of the housing 1. A discharge channel 6 is further arranged on the periphery of the housing 1 near the spraying part 2. A discharge groove 7 is opened on the side of the housing 1 near the inlet of the discharge channel 6. The bottom of the discharge groove 7 is hinged to the bottom of the flip-back blade guide groove 8. A sealing coating layer 9 covers the periphery of the discharge groove 7.

[0031] Preferably, the gas generating agent 5 is connected to one end of the starting component 10, and the other end of the starting component 10 penetrates through the rear end of the housing 1. The starting component 10 in this embodiment can be an electric igniter or a thermal wire structure. In this embodiment, when the starting component 10 is an electric igniter structure, it is connected to a fire detection device (the fire detection device is a temperature sensor and / or a smoke sensor). When a fire, overheating or other situations occur, after the fire detection device detects a high-temperature environment caused by the fire externally, it sends a signal to the microprocessor, and the microprocessor controls the starting component 10 to ignite the gas generating agent 5. When the starting component 10 is a thermal wire structure, since the thermal wire structure is relatively simple, when a thermal wire is used, it can be automatically started during a fire, and the thermal wire directly ignites the gas generating agent 5 without the need to be paired with an additional fire detection device and other external devices.

[0032] Preferably, the flip-back blade guide groove 8 includes a flip plate 8.1 hinged to the bottom of the discharge groove 7. Groove plates 8.2 are provided on both sides of the flip plate 8.1, and blades 8.3 are provided on the outer sides of the groove plates 8.2. In this embodiment, a pin shaft is provided at the bottom of the flip plate 8.1, and a hole is provided at the bottom of the discharge groove 7. The bottom of the flip plate 8.1 is hinged to the discharge groove 7 through the pin shaft. When the flip plate 8.1 is pressed and rotates, it can drive the groove plates 8.2 and the blades 8.3 to rotate together, and the blades 8.3 can cut through the sealing coating layer 9 to expose the discharge groove 7.

[0033] Preferably, the flip plate 8.1 is a rectangular plate structure, and the discharge groove 7 is a rectangular notch structure matching the flip plate 8.1.

[0034] Preferably, a blade groove 6.1 matching the top of the blade 8.3 is provided at the bottom of the discharge channel 6, and the top of the blade 8.3 is higher than the top of the flip plate 8.1 and the top of the sealing coating layer 9 by a certain distance. After such a design, in order to prevent the flip plate 8.1 from being pressed and rotated to cause excessive outward turning, by providing the blade groove 6.1 at the bottom of the discharge channel 6, when the flip plate 8.1 drives the groove plates 8.2 and the blades 8.3 to rotate together, the blades 8.3 can pass through the blade groove 6.1, while the top of the flip plate 8.1 is blocked by other areas at the bottom of the discharge channel 6, so that the flip plate 8.1 stops rotating. This structure can maximize the airtightness of the connection channel formed by the flip-back blade guide groove, enabling the gas to smoothly enter the inlet of the discharge channel 6 and be discharged from the outlet of the discharge channel 6; in addition, after the top of the blade 8.3 is higher than the top of the sealing coating layer 9 by a certain distance, the sealing coating layer 9 can be completely turned outward to expose the discharge groove 7 only after two incisions are made.

[0035] Preferably, an arc-shaped groove 8.4 is provided inside the slot plate 8.2, and an impact shaft 3.1 is fixedly provided on the side of the top of the piston 3. The impact shaft 3.1 cooperates with the arc-shaped groove 8.4. After such a design, the position where the top of the piston 3 impacts the reversible back blade guide groove 8 is the position where the impact shaft 3.1 contacts the arc-shaped groove 8.4, avoiding the phenomenon that other positions of the piston 3 impact the reversible back blade guide groove 8 and are damaged.

[0036] Preferably, a limiting plate 13 is provided inside the housing 1 corresponding to the height of the discharge groove 7. The bottom of the piston 3 is open, and a wire mesh 3.2 is filled inside. A first discharge hole 3.3 is provided on the side of the piston 3, and the first discharge hole 3.3 cooperates with the discharge groove 7. A second discharge hole 3.4 is provided on the top of the piston 3. In order to prevent the piston 3 from moving upward and exceeding the height where the discharge groove 7 is located, the limiting plate 13 is provided to play a limiting role, so that the piston 3 stops after the top of the piston 3 contacts the limiting plate 13. In addition, in order to ensure that when the piston 3 stops after the top of the piston 3 contacts the limiting plate 13, all the dry powder extinguishing agent 4 above the piston 3 can be ejected to avoid residue, the second discharge hole 3.4 is added. After part of the gas generated by the gas generating agent 5 passes through the second discharge hole 3.4, it pushes the dry powder extinguishing agent 4 upward to be discharged, greatly reducing its residue rate. In addition, the design of the wire mesh 3.2 can effectively reduce the heat generated after the gas generating agent 5 is ignited, achieving a cooling effect.

[0037] Preferably, the housing 1 is of a cylindrical structure. The spraying part 2 includes a front cover 2.1 connected to the front end of the housing 1, and a plurality of spray holes 2.2 are provided on the surface of the front cover 2.1. In this embodiment, during the fire extinguishing process, the dry powder extinguishing agent 4 is ejected from the spray holes 2.2 of the spraying part 2 under pressure.

[0038] Preferably, a wire mesh 11 is further provided on the inner wall of the housing 1 near the front cover 2.1, and a buffer chamber 12 is formed between the wire mesh 11 and the front cover 2.1. Currently, conventional dry powder extinguishing agents 4 are prone to moisture absorption and caking. In order to prevent the phenomenon that the piston 3 cannot move after the dry powder caking occurs, after adding the buffer chamber 12, the piston 3 can also push the entire dry powder extinguishing agent 4 into the buffer chamber 12 to ensure that it can impact the reversible back blade guide groove 8 to expose the discharge groove 7. The design of the wire mesh 11 makes it prone to deformation under pressure, ensuring the buffering function of the buffer chamber 12.

[0039] More preferably, an aluminum foil can be added at the spray holes 2.2 of the spraying part 2 to prevent moisture in the air from entering during the normal storage and transportation of the fire extinguishing device, resulting in dry powder moisture absorption. At the same time, the aluminum foil is prone to rupture under pressure and does not affect the dry powder release process.

[0040] More preferably, the sealing coating layer 9 can be made of a silica gel layer, and the blade 8.3 of the reversible back blade guide groove 8 can easily cut through the silica gel layer.

[0041] More preferably, the gas generating agent 5 is an aerosol generating agent powder or a column formed by pressing the aerosol generating agent powder.

[0042] In addition, the present invention also discloses a fire extinguishing method for the device using the above aerosol in cooperation with dry powder for fire extinguishing, which includes the following steps:

[0043] S1. When a fire breaks out, the starting component 10 ignites the gas generating agent 5;

[0044] S2. The gas generating agent 5 burns to generate gas, which then pushes the piston 3 to move upward. During the upward movement of the piston 3, the dry powder fire extinguishing agent 4 is pressed to be ejected from the spraying part 2 to carry out the fire extinguishing process;

[0045] S3. When the piston 3 moves to the height where the rotatable back edge guide groove 8 is located, it will impact the rotatable back edge guide groove 8 and push it to rotate outward;

[0046] S4. During the outward rotation of the rotatable back edge guide groove 8, it will cut the sealing coating layer 9 on the surface of the discharge groove 7, thereby exposing the discharge groove 7. After the rotatable back edge guide groove 8 stops rotating, a connection channel is formed to make the discharge groove 7 communicate with the discharge channel 6;

[0047] S5. The gas generated by the combustion of the gas generating agent 5 passes through the first discharge hole 3.3 opened on the side of the piston 3, enters the discharge channel 6 through the discharge groove 7, and finally is ejected from the top outlet of the discharge channel 6 to cooperate in the fire extinguishing process.

[0048] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments in this application and the features in the embodiments can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An apparatus for extinguishing fire by aerosol in cooperation with dry powder, comprising a housing (1), a spraying part (2) is arranged at the front end of the housing (1), a piston (3) which is slidably matched with the housing (1) is arranged in the housing (1), dry powder fire extinguishing agent (4) is arranged between the piston (3) and the spraying part (2), and a gas generating agent (5) is arranged between the piston (3) and the rear end of the housing (1), characterized in that: An exhaust passage (6) is also provided on the periphery of the housing (1) near the spraying part (2). A discharge groove (7) is formed in the side part of the housing (1) near the inlet of the exhaust passage (6). The bottom of the discharge groove (7) is hinged to the bottom of the rotatable back-edge guide groove (8). A sealing coating layer (9) covers the periphery of the discharge groove (7). The gas generating agent (5) is connected to one end of the starting component (10), and the other end of the starting component (10) passes through the rear end of the housing (1). The rotatable back-edge guide groove (8) includes a turning plate (8.1) hinged to the bottom of the discharge groove (7). Groove plates (8.2) are arranged on both sides of the turning plate (8.1), and cutting edges (8.3) are formed on the outer sides of the groove plates (8.2). An edge groove (6.1) matching the top of the cutting edge (8.3) is formed in the bottom of the exhaust passage (6). The top of the cutting edge (8.3) is higher than the top of the turning plate (8.1) and the top of the sealing coating layer (9) by a certain distance.

2. The aerosol and dry powder combined fire extinguishing device according to claim 1, wherein: The turning plate (8.1) is in a rectangular plate-like structure, and the discharge groove (7) is in a rectangular notch structure matching the turning plate (8.1).

3. The device for extinguishing fire by using aerosol in cooperation with dry powder according to claim 1, characterized in that: Arc-shaped grooves (8.4) are formed in the inner sides of the groove plates (8.2). An impact shaft (3.1) is fixedly arranged on the top side of the piston (3), and the impact shaft (3.1) cooperates with the arc-shaped grooves (8.4).

4. An apparatus for extinguishing fire by aerosol in cooperation with dry powder according to claim 1, characterized in that: A limiting plate (13) is arranged on the inner side of the housing (1) corresponding to the height of the discharge groove (7). The bottom of the piston (3) is open, and a wire mesh (3.2) is filled inside. First discharge holes (3.3) are formed in the side of the piston (3), and the first discharge holes (3.3) cooperate with the discharge groove (7). Second discharge holes (3.4) are formed in the top of the piston (3).

5. An apparatus for extinguishing fire by aerosol cooperating with dry powder according to claim 1, characterized in that: The housing (1) is in a cylindrical structure. The spraying part (2) includes a front cover (2.1) connected to the front end of the housing (1), and a plurality of spray holes (2.2) are formed on the surface of the front cover (2.1).

6. The device for extinguishing fire by aerosol cooperating with dry powder according to claim 5, characterized in that: A wire mesh (11) is further arranged on the inner wall of the housing (1) near the front cover (2.1), and a buffer chamber (12) is formed between the wire mesh (11) and the front cover (2.1).

7. A fire extinguishing method for an aerosol and dry powder combined fire extinguishing device according to any one of claims 1 to 6, characterized in that: It includes the following steps: S1. When a fire breaks out, the starting component (10) ignites the gas generating agent (5). S2. The gas generating agent (5) burns to generate gas, and then pushes the piston (3) to move upward. During the upward movement of the piston (3), the dry powder fire extinguishing agent (4) is pressed to be sprayed out from the spraying part (2) to carry out the fire extinguishing process. S3. When the piston (3) moves to the height where the rotatable back-edge guide groove (8) is located, it will impact the rotatable back-edge guide groove (8) and push it to rotate outward. S4. During the outward rotation of the rotatable back-edge guide groove (8), it will cut the sealing coating layer (9) on the surface of the discharge groove (7), thereby exposing the discharge groove (7). After the rotatable back-edge guide groove (8) stops rotating, a connection channel is formed to make the discharge groove (7) communicate with the exhaust passage (6). S5. The gas generated by the combustion of the gas generating agent (5) passes through the first discharge holes (3.3) formed in the side of the piston (3), enters the exhaust passage (6) through the discharge groove (7), and finally sprays out from the top outlet of the exhaust passage (6) to cooperate in the fire extinguishing process.

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