Fragment-free fire extinguishing bomb

Abstract

This invention relates to a fragmentless fire extinguishing projectile, comprising: a warhead, a fire extinguishing warhead, a propulsion device, a window-breaking device, and a control unit; the warhead and the propulsion device are located at opposite ends of the fire extinguishing warhead, and the propulsion device is detachably disposed from the fire extinguishing warhead; the window-breaking device is installed at the end of the warhead away from the fire extinguishing warhead; the control unit is disposed inside the warhead; the fire extinguishing warhead comprises: an outer shell, an inner shell coaxially disposed with the outer shell, and a fire extinguishing agent release device coaxially disposed with the inner shell; the outer shell is a hollow, regular columnar structure, comprising: multiple outer shell portions, an outer shell opening and closing mechanism for connecting the outer shell portions and for controlling the opening and closing of the outer shell portions; the inner shell is a hollow, regular columnar structure with multiple through holes spaced apart on its sidewalls; the fire extinguishing agent release device is a compressed gas explosion-type fire extinguishing device.

Description

Technical Field

[0001] This invention relates to the field of fire protection, and more particularly to a non-fragmented fire extinguishing bomb. Background Technology

[0002] Firefighting, or fire suppression, is a field closely related to production and daily life. Current common firefighting methods involve using fire extinguishers and fans. However, these tools must be manually operated inside the fire scene, which is highly dangerous and slow.

[0003] The consequences of fires in high-rise buildings are unimaginable. Fighting fires in high-rise buildings has become a severe challenge for cities during their development, making the research and development of effective fire-fighting window-breaking extinguishing bombs an urgent priority. However, in high-rise firefighting, traditional fire-breaking bombs pose additional safety risks when used in densely populated areas due to the potential for flying fragments. Summary of the Invention

[0004] The purpose of this invention is to provide a fragment-free fire extinguishing bomb, which solves the problem of fire extinguishing bombs easily generating flying fragments.

[0005] To achieve the above-mentioned objectives, the present invention provides a fragmentless fire extinguishing projectile, comprising: a warhead, a fire extinguishing warhead, a propulsion device, a window-breaking device, and a control unit; The warhead and the propulsion device are located at opposite ends of the fire extinguishing warhead, and the propulsion device is detachable from the fire extinguishing warhead. The window-breaking device is installed at the end of the warhead furthest from the fire-extinguishing warhead. The control unit is located inside the warhead; The fire extinguishing warhead includes: an outer shell, an inner shell coaxially disposed with the outer shell, and a fire extinguishing agent release device coaxially disposed with the inner shell; The outer shell is a hollow, regular column, comprising: a plurality of outer shell parts, an outer shell opening and closing mechanism for connecting the outer shell parts, and an outer shell opening and closing mechanism for controlling the opening and closing of the outer shell parts; The inner shell is a hollow, regular column with multiple through holes spaced apart on its sidewalls; The extinguishing agent release device is a compressed gas explosion-type fire extinguishing device.

[0006] According to one aspect of the invention, the opening and closing mechanism includes: a first connecting member and a second connecting member; The second connector is designed to slide linearly relative to the first connector; The two ends of the first connector that are far apart from each other are respectively connected to the two opposite outer shell parts, for driving the two opposite outer shell parts to open and close in a linear direction.

[0007] According to one aspect of the present invention, the first connector includes: a hollow tubular body, a first elastic member disposed in the tubular body, a limiting structure disposed on the side wall of the tubular body, and a vent hole disposed on the side wall of the tubular body and penetrating the side wall. The second connector has a sliding guide at one end; The sliding guide is slidably disposed within the tubular body, and the sliding guide is provided with a matching limiting structure that cooperates with the limiting structure. When the matching limiting structure is connected to the limiting structure, the sliding guide is abutting against the first elastic member, and the first elastic member is in a compressed state. The vent and the first elastic element are located on the same side of the sliding guide.

[0008] According to one aspect of the present invention, the limiting structure includes: a receiving cavity, a second elastic member disposed within the receiving cavity, and a movable limiting member slidable along the receiving cavity; The accommodating cavity is connected to the tubular body; The shape of the movable limiting member is configured to match the opening shape of the receiving cavity; One end of the movable limiting member abuts against the second elastic member, and the other end is configured to match the shape of the inner wall of the tubular body. The end of the movable limiting member away from the second elastic member is provided with a limiting protrusion that is connected to the matching limiting structure; When the limiting protrusion is connected to the matching limiting structure, the sliding guide partially obstructs the end face of the movable limiting member.

[0009] According to one aspect of the present invention, at least one set of the opening and closing mechanisms is provided in the outer shell, and two parallel opening and closing mechanisms constitute a set; Along the axial direction of the outer casing portion, the opening and closing mechanisms are arranged at intervals and parallel to each other; The two axial ends of the inner shell are respectively fixedly connected to the first connecting member of the opening and closing mechanism.

[0010] According to one aspect of the invention, the two ends of the extinguishing agent release device are respectively rotatably connected to the inner shell.

[0011] According to one aspect of the present invention, the extinguishing agent release device comprises: a hollow cylinder with openings at both ends, a front cover for connecting to the front end of the hollow cylinder, a rear cover for connecting to the rear end of the hollow cylinder, a first rotating shaft disposed on the front cover, a second rotating shaft disposed on the rear cover, and a heater. One end of the heater is detachably mounted on the front cover, and the other end extends into the hollow cylinder. The first rotating shaft is a hollow shaft, and the heater's wires are led out through the hollow part of the first rotating shaft.

[0012] According to one aspect of the present invention, a plurality of grooves are provided on the outer side surface of the hollow cylinder, and the opening direction of the grooves is arranged at an angle to the radial direction of the hollow cylinder; Along the axial direction of the hollow cylinder, the groove is a straight groove extending in a straight direction, or the groove is a spiral groove extending in a spiral direction; A groove is provided at the bottom of the groove.

[0013] According to one aspect of the present invention, the hollow cylinder comprises: an inner cylinder and an outer cylinder arranged coaxially; The inner cylinder has multiple through slots on its side wall, and the opening direction of the through slots is set at an angle to the radial direction of the inner cylinder. The outer cylinder is sealed to the inner cylinder to close the through groove, and a groove is provided on the outer cylinder at a position corresponding to the through groove.

[0014] According to one aspect of the invention, the window-breaking device is a pyramidal structure; The window-breaking devices are arranged in a regular, spaced pattern on the warhead.

[0015] According to one aspect of the present invention, the fire extinguishing warhead employs a layered, nested design, ensuring structural safety in its non-use state and effectively preventing fragmentation during fire extinguishing, thus giving the invention high reliability and high safety. Specifically, in the non-use state, the outer shell effectively protects the internal structure, while in the use state, it automatically opens to activate the internal fire extinguishing device. Furthermore, the inner shell effectively prevents fragmentation during the release of the extinguishing agent, ensuring safe operation during the fire extinguishing process. Simultaneously, the regularly arranged through-holes on the inner shell further direct the released extinguishing agent, resulting in a more regular spray and improved fire extinguishing effect.

[0016] According to one aspect of the present invention, the outer shell adopts a cylindrical structure, which is simple in structure and has a regular shape, which is conducive to the flight of the fire extinguishing bomb. When it is set as multiple symmetrical parts, the outer shell can grow radially under the opening action of the opening and closing mechanism, thereby causing the center of gravity of the outer shell to extend in the direction of growth. Furthermore, under the rolling action of the curved surface of the outer shell parts, two adjacent outer shell parts contact the bottom surface to achieve stable support of the outer shell, which acts as a support. At the same time, at least one opening formed by the separation of the outer shell parts becomes the release position of the fire extinguishing agent, thereby achieving an automatic fire extinguishing effect in the fire scene. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the structure of a fragmentless fire extinguishing bomb according to one embodiment of the present invention; Figure 2 This is a schematic diagram showing the open state of the fire extinguishing warhead according to one embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the connection structure between the opening / closing mechanism and the outer casing according to one embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the opening of an opening and closing mechanism according to an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the connection structure between the opening / closing mechanism and the outer casing according to another embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the opening of the opening and closing mechanism according to another embodiment of the present invention; Figure 7 This is a schematic diagram showing the outer shape of the outer casing according to another embodiment of the present invention; Figure 8 This is a schematic diagram illustrating the structure of a fire extinguishing agent release device according to one embodiment of the present invention; Figure 9 This is a schematic cross-sectional view of a fire extinguishing agent release device according to one embodiment of the present invention; Figure 10 This is a schematic cross-sectional view of a fire extinguishing agent release device according to another embodiment of the present invention. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0019] In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" express orientations or positional relationships based on the orientations or positional relationships shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present invention.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the embodiments of the present invention are not limited to the following embodiments.

[0021] like Figure 1 As shown, according to one embodiment of the present invention, a fragmentless fire extinguishing grenade includes: a warhead 1, a fire extinguishing warhead 2, a propulsion device 3, a window-breaking device 4, and a control unit. In this embodiment, the warhead 1 and the propulsion device 3 are located at opposite ends of the fire extinguishing warhead 2, and the propulsion device 3 is detachably disposed from the fire extinguishing warhead 2; the window-breaking device 4 is installed at the end of the warhead 1 away from the fire extinguishing warhead 2; the control unit is disposed inside the warhead 1. In this embodiment, the fire extinguishing warhead 2 and the propulsion device 3 are respectively connected to the control unit installed inside the warhead 1 to realize the flight control of the fire extinguishing grenade and to perform the fire extinguishing action after reaching the fire point.

[0022] Combination Figure 1 , Figure 2 and Figure 3 As shown, according to one embodiment of the present invention, the fire extinguishing warhead 2 includes: an outer shell 21, an inner shell 22 coaxially disposed with the outer shell 21, and a fire extinguishing agent release device 23 coaxially disposed with the inner shell 22. In this embodiment, the outer shell 21 is a hollow regular column, which includes: a plurality of outer shell parts 211, and an outer shell opening and closing mechanism 212 for connecting the outer shell parts 211 and for controlling the opening and closing of the outer shell parts 211. In this embodiment, the inner shell 22 is a hollow regular column, and a plurality of through holes 221 are provided at intervals on its sidewalls. In this embodiment, the fire extinguishing agent release device 23 is a compressed gas explosion type fire extinguishing device. It should be noted that the warhead 1 and the propulsion device 4 are coaxially connected to the fire extinguishing warhead 2 through a shaft provided in the middle, which does not affect the opening and closing fire extinguishing operation of the fire extinguishing warhead 2.

[0023] Through the above-described design, the fire extinguishing warhead of the present invention, by employing a layered, nested structure, ensures structural safety in its non-use state and effectively prevents fragmentation during fire extinguishing, thus giving the invention high reliability and high safety. Specifically, in the non-use state, the outer shell effectively protects the internal structure, while in the use state, it automatically opens to activate the internal fire extinguishing device. Furthermore, the inner shell 22 effectively prevents fragmentation from splashing when the fire extinguishing agent is released by the fire extinguishing agent release device 23, ensuring safe operation during the fire extinguishing process. Simultaneously, the regularly arranged through holes 221 on the inner shell further allow for directional adjustment of the released fire extinguishing agent, resulting in a more regular spray and improved fire extinguishing effect.

[0024] Combination Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the opening and closing mechanism 212 includes: a first connecting member 2121 and a second connecting member 2122. In this embodiment, the second connecting member 2122 and the first connecting member 2121 are arranged to slide linearly relative to each other. The two ends of the first connecting member 2121 that are far apart from each other are respectively connected to two opposite outer shell portions 211, for driving the two opposite outer shell portions 211 to open and close in a linear direction.

[0025] Combination Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the first connecting member 2121 includes: a hollow tubular body 2121a, a first elastic member 2121b disposed in the tubular body 2121a, a limiting structure 2121c disposed on the side wall of the tubular body 2121a, and a vent hole 2121d disposed on and penetrating the side wall of the tubular body 2121a. In this embodiment, one end of the second connecting member 2122 is provided with a sliding guide member 2122a; the sliding guide member 2122a is slidably disposed within the tubular body 2121a, and the sliding guide member 2122a is provided with a matching limiting structure 2122b that cooperates with the limiting structure 2121c. In this embodiment, when the matching limiting structure 2122b is connected to the limiting structure 2121c, the sliding guide member 2122a abuts against the first elastic member 2121b, and the first elastic member 2121b is in a compressed state. In this embodiment, the vent 2121d and the first elastic element 2121b are located on the same side of the sliding guide 2122a.

[0026] In this embodiment, the tubular body 2121a is a hollow tube with openings at both ends. One end is fixedly connected to the outer shell portion 211, and the outer shell portion 211 seals its end. The other end of the tubular body 2121a is into which the second connector 2122 extends to achieve linear reciprocating sliding of the second connector within the tubular body 2121a.

[0027] In this embodiment, the first elastic member 2121b is a compression spring, which is disposed between the sliding guide 2122a and the outer shell portion 211, and the two opposite ends of the first elastic member 2121b are respectively abutted against one side of the outer shell portion 211 and the sliding guide 2122a.

[0028] In this embodiment, the diameter of the sliding guide 2122a is the same as the inner diameter of the tubular body 2121a. Therefore, while allowing for sliding, it also seals and divides the tubular body 2121a, separating the chamber containing the first elastic member 2121b from the other chamber. In this embodiment, to improve the division of the internal space of the tubular body 2121a by the sliding guide 2122a, a sealing structure such as a sealing ring can be provided on the outer surface of the sliding guide 2122a to achieve better sealing performance.

[0029] In this embodiment, the second connecting member 2122 further includes: a connecting rod; a sliding guide 2122a is disposed at one end of the connecting rod, and the other end of the connecting rod is connected to another outer shell portion 211. In this embodiment, the diameter of the portion of the connecting rod extending into the tubular body 2121a is smaller than the diameter of the sliding guide 2122a. This arrangement effectively reduces the contact area between the second connecting member 2122 and the tubular body 2121a, effectively reducing sliding friction, which is beneficial for ensuring the stable and reliable operation of the opening and closing mechanism 212.

[0030] In this embodiment, an end cap is provided at the end of the tubular body 2121a away from the outer shell portion 211, and the second connecting member 2122 is slidably connected to the connecting rod. In this embodiment, a one-way valve can be provided on the end cap to control the expulsion of gas from the tubular body 2121a when the second connecting member 2122 moves along the tubular body 2121a, thereby suppressing the inflow of external gas and thus contributing to the stable operation of the opening and closing mechanism. In addition, an annular sealing ring or similar device can be provided at the contact position between the end cap and the second connecting member 2122 to improve sealing. Of course, in another embodiment, the contact position between the end cap and the connecting rod may not be sealed, and a one-way valve may not be provided accordingly, simply maintaining communication between the front cavity of the tubular body 2121a and the outside. The corresponding first elastic member 2121b needs to be appropriately provided to overcome external air pressure while pushing the second connecting member 2122 to move, ensuring the stable and smooth opening of the outer shell 21.

[0031] Combination Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the limiting structure 2121c includes: a receiving cavity 2121c1, a second elastic member 2121c2 disposed within the receiving cavity 2121c1, and a movable limiting member 2121c3 slidable along the receiving cavity 2121c1. In this embodiment, the receiving cavity 2121c1 is connected to the tubular body 2121a. In this embodiment, the receiving cavity 2121c1 can be fixed to one side of the tubular body 2121a by means of threaded connection or welding. The limiting member 2121c3 is slidably disposed in the receiving cavity 2121c1, and an anti-dislodgement structure (e.g., a continuous annular protrusion or spaced protrusions disposed at the opening edge of the receiving cavity 2121c3) can be selectively provided at the end position of the receiving cavity 2121c3 to prevent the movable limiting member 2121c3 from dislodging. Accordingly, in order to achieve alignment between the end face of the movable limiting member 2121c3 and the inner side of the tubular body 2121a, a positioning structure that cooperates with the release structure can be set at the edge of the movable limiting member 2121c3 to ensure the stable setting of the movable limiting member 2121c3.

[0032] In this embodiment, the shape of the movable limiting member 2121c3 is configured to match the opening shape of the receiving cavity 2121c1. For example, if the opening shape of the receiving cavity 2121c1 is circular, rectangular, or elliptical, the shape of the movable limiting member 2121c3 is also correspondingly set to be circular, rectangular, or elliptical. In this embodiment, the outer surface of the movable limiting member 2121c3 is sealed to the inner wall of the receiving cavity 2121c1 to prevent gas leakage to the rear of the movable limiting member 2121c3.

[0033] In this embodiment, a one-way air valve can be provided on the side of the receiving cavity 2121c1 away from the opening, so that the contents of the movable limiting member 2121c3 can be discharged when it moves backward, thereby ensuring the stable operation of the movable limiting member 2121c3.

[0034] In this embodiment, one end of the movable limiting member 2121c3 abuts against the second elastic member 2121c2, and the other end is configured to fit the shape of the inner wall of the tubular body 2121a. By applying pressure to the movable limiting member 2121c3 using the second elastic member 2121c2, the position of the movable limiting member 2121c3 is stabilized, which is beneficial to the stable positioning of the second connecting member 2122.

[0035] In this embodiment, to achieve the limiting effect of the movable limiting member 2121c3 on the second connecting member 2122, a limiting protrusion 2121c31 connected to the matching limiting structure 2122b is provided at the end of the movable limiting member 2121c3 away from the second elastic member 2121c2. When the limiting protrusion 2121c31 is connected to the matching limiting structure 2122b, the sliding guide member 2122a partially obstructs the end face of the movable limiting member 2121c3.

[0036] In this embodiment, the portion of the movable limiting member 2121c3 not obstructed by the sliding guide member 2122a is located on the same side of the sliding guide member 2122a as the first elastic member 2121b and the vent 2121d. With this arrangement, the high-pressure gas flowing in through the vent 2121d pushes the movable limiting member 2121c3, thereby releasing the sliding guide member 2122a and opening the outer casing portion 211.

[0037] In this embodiment, the edge of the sliding guide 2122a that abuts against the first elastic member 2121b is provided with a chamfered surface. By providing the chamfered surface, on the one hand, positioning with the first elastic member 2121b is achieved, ensuring stable abutment with the first elastic member 2121b. On the other hand, the chamfered surface can effectively increase the unobstructed area of ​​the movable limiting member 2121c3, which is further beneficial for the movable limiting member 2121c3 to be pushed by high-pressure gas, so as to realize the smooth opening of the outer shell 211.

[0038] In this embodiment, the vent 2121d can be configured as a conical vent with its small diameter end located on the inner side of the tubular body 2121a and its large diameter end located on the outer side of the tubular body 2121a.

[0039] With the above settings, the opening and closing mechanism 212 can be used to sense the pressure change inside the outer shell 21. When the fire extinguishing bomb reaches the fire extinguishing position, the fire extinguishing agent release device 23 receives the signal and starts to release the fire extinguishing agent, which can effectively increase the gas pressure in the outer shell 21 rapidly. In this process, the opening and closing mechanism 212 senses the change and releases the second connecting member 2122 so that the outer shell is opened.

[0040] With the above-described design, the opening and closing mechanism of this solution is simple in structure and operates reliably and stably. It effectively ensures the timely opening of the outer casing and maintains high reliability even in high-temperature environments, thus guaranteeing the fire extinguishing effect of the fire extinguishing bomb of this invention.

[0041] According to another embodiment of the present invention, based on the aforementioned opening and closing mechanism 212, a high-pressure gas cylinder may be further provided. The high-pressure gas cylinder is connected to the vent 2121d through a pipeline, and is used to release the internal high-pressure gas after the fire extinguishing bomb reaches the fire extinguishing position to realize the smooth operation of the opening and closing mechanism 212, thereby further improving the reliability of the present invention.

[0042] According to another embodiment of the present invention, the opening and closing mechanism 212 may be configured as a cylinder assembly, the corresponding cylinder assembly containing a high-pressure gas cylinder, which is electrically opened or closed by a control unit to realize the opening of the outer casing 21.

[0043] Combination Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the outer shell 21 has a hollow cylindrical structure and is divided into two identical outer shell portions 211. The interiors of the two outer shell portions 211 are connected by two ends of an opening and closing mechanism 212. In this embodiment, the axis of the opening and closing mechanism 212 is arranged to coincide with the diameter of the outer shell 21, and the position where the opening and closing mechanism 212 is connected to the outer shell portion 211 is located on the axial symmetry plane of the outer shell portion 211.

[0044] With the above configuration, the outer shell 21 adopts a cylindrical structure, which is simple in structure and has a regular shape, which is conducive to the flight of the fire extinguishing bomb. When it is set as two symmetrical parts, the outer shell 21 can grow radially under the opening action of the opening and closing mechanism 212, so that the center of gravity of the outer shell 21 extends in the direction of growth. Then, under the rolling action of the curved surface of the outer shell part 211, both outer shell parts 211 contact the bottom surface to achieve stable support of the outer shell, which acts as a support. At the same time, at least one opening formed by the separation of the outer shell parts 211 becomes the release position of the fire extinguishing agent, thereby achieving an automatic fire extinguishing effect in the fire scene.

[0045] Combination Figure 5 and Figure 6As shown, according to one embodiment of the present invention, the outer shell 21 has a hollow cylindrical structure and is divided into four structurally identical outer shell portions 211. Two outer shell portions 211 form a group, and are internally connected at both ends by an opening and closing mechanism 212. In this embodiment, to achieve connection with the four outer shell portions 211, the opening and closing mechanisms 212 need to be configured as two staggered cross-shaped mechanisms with a 90° included angle. The axis of the opening and closing mechanism 212 coincides with the diameter of the outer shell 21, and the position where the opening and closing mechanism 212 connects to the outer shell portion 211 is located on the axial symmetry plane of the outer shell portion 211. Of course, the number of outer shells 21 can also be set according to the usage scenario, with an even number being preferred.

[0046] With the above configuration, the outer shell 21 adopts a cylindrical structure, which is simple in structure and has a regular shape, which is conducive to the flight of the fire extinguishing bomb. When it is set as multiple symmetrical parts, the outer shell 21 can grow radially under the opening action of the opening and closing mechanism 212, so that the center of gravity of the outer shell 21 extends in the direction of growth. Then, under the rolling action of the curved surface of the outer shell part 211, two adjacent outer shell parts 211 are in contact with the bottom surface to achieve stable support of the outer shell, which acts as a support. At the same time, at least one opening formed by the separation of the outer shell parts 211 becomes the release position of the fire extinguishing agent, thereby achieving an automatic fire extinguishing effect in the fire scene.

[0047] With the above-described configuration, the outer shell 21 is divided into four or more parts that form openings in different directions when opened, which is beneficial for the all-round release of the extinguishing agent. Furthermore, its rolling angle after opening can be further reduced, allowing each part of the outer shell to function as a support in uneven ground or confined spaces, thus better adapting to the terrain or spatial conditions of the fire extinguishing point and resulting in a superior fire extinguishing effect.

[0048] like Figure 7 As shown, according to another embodiment of the present invention, along the circumference of the outer shell 21, the outer surface at the end position of adjacent outer shell portions 211 can be configured as a tangential plane or a planar region can be provided at the end position. With the above configuration, when the outer shell portions are separated, stable contact with the ground can be achieved through the tangential plane or the planar region, improving the support stability of the fire-extinguishing warhead 2 and contributing to ensuring the fire-extinguishing effect of the present invention.

[0049] like Figure 3 , Figure 5As shown, according to one embodiment of the present invention, at least one set of opening and closing mechanisms 212 is provided in the outer shell 21, and two parallel opening and closing mechanisms 212 constitute a set; along the axial direction of the outer shell portion 211, the opening and closing mechanisms 212 are spaced apart and parallel to each other. In this embodiment, the number of sets of opening and closing mechanisms 212 is determined by the number of outer shell portions 211, and can be set accordingly according to actual needs, as long as it can satisfy the requirement of fully opening the outer shell 21.

[0050] In this embodiment, the two axial ends of the inner housing 22 are respectively fixedly connected to the first connecting member 2121 of the opening and closing mechanism 212.

[0051] According to one embodiment of the present invention, a sealing structure is provided at the ends of adjacent outer casing portions 211. In this embodiment, the sealing structure may be made of an interlocking structure or a sealing strip. By providing a sealing structure to achieve sealing of the internal space, it is beneficial to ensure that the opening and closing structure is activated by changes in internal pressure. In this embodiment, the increased pressure inside the outer casing 21 can be achieved by a gas storage device provided inside the outer casing, or by first triggering the gaseous extinguishing agent released by the extinguishing agent release device 23.

[0052] Combination Figure 2 and Figure 8 As shown, according to one embodiment of the present invention, the extinguishing agent release device 23 is rotatably connected to the inner housing 22 at both axial ends.

[0053] By configuring the extinguishing agent release device 23 as rotatable, the extinguishing agent can be uniformly released into the surrounding space, avoiding the accumulation of the extinguishing agent and thus ensuring the fire extinguishing effect of the present invention.

[0054] like Figure 8 As shown, according to one embodiment of the present invention, the fire extinguishing agent release device 23 includes: a hollow cylinder 231 open at both ends, a front cover 232 for connecting to the front end of the hollow cylinder 231, a rear cover 233 for connecting to the rear end of the hollow cylinder 231, a first rotating shaft 234 disposed on the front cover 232, a second rotating shaft 235 disposed on the rear cover 233, and a heater 236. In this embodiment, one end of the heater 236 is detachably mounted on the front cover 232, and the other end extends into the hollow cylinder 231. In this embodiment, the heater 236 can be an electric heater, which can be connected to the control unit via a wire or wireless connection to achieve timely activation of the fire extinguishing agent when it reaches the fire extinguishing point.

[0055] In this embodiment, the first rotating shaft 234 is a hollow shaft, and the wires of the heater 236 are led out through the hollow part of the first rotating shaft 234. The led-out wires extend through the axial direction of the inner housing 22 and the outer housing 21 all the way to the control unit of the projectile, realizing the corresponding electrical connection.

[0056] Combination Figure 8 and Figure 9 As shown, according to one embodiment of the present invention, a plurality of grooves 231a are provided on the outer surface of the hollow cylinder 231, and the opening direction of the grooves 231a is arranged at an angle to the radial direction of the hollow cylinder 231. In this embodiment, the plurality of grooves 231a are equally spaced along the circumference of the hollow cylinder 231. At the same time, since the opening direction of the grooves 231a is inclined relative to the radial direction of the hollow cylinder 231, the hollow cylinder 231 can be pushed when the internal extinguishing agent (such as compressed carbon dioxide) is sprayed out through the grooves 231a, thereby achieving a rotating spraying effect.

[0057] In this embodiment, the groove 231a is a straight groove extending in a straight direction along the axial direction of the hollow cylinder 231, or the groove 231a is a spiral groove extending in a spiral direction. In this embodiment, grooves are provided at the bottom of the groove 231a. These grooves are grooves with a certain depth and a small width. In this embodiment, the grooves are straight grooves, wavy grooves, or multiple annular grooves spaced apart along the axial direction of the hollow cylinder 231.

[0058] By setting the groove at the bottom of the groove 231a as described above, the bottom strength of the groove 231a can be effectively controlled, which can further help control the expansion and ejection effect of the internal extinguishing agent and improve the extinguishing effect of the present invention.

[0059] like Figure 10 As shown, according to another embodiment of the present invention, the hollow cylinder 231 includes an inner cylinder portion 2311 and an outer cylinder portion 2312 coaxially arranged. In this embodiment, the inner cylinder portion 2311 has a plurality of through grooves 2311a penetrating its sidewall, and the opening direction of the through grooves 2311a is arranged at an angle to the radial direction of the inner cylinder portion 2311. In this embodiment, the outer cylinder portion 2312 is sealed to the inner cylinder portion 2311 to seal the through grooves 2311a, and a groove is provided on the outer cylinder portion 2312 at a position corresponding to the through grooves 2311a. The groove can be a straight groove, a wavy groove, or a plurality of annular grooves spaced apart. In this embodiment, the outer cylinder portion 2312 can be made of a soft material to facilitate its opening and ensure the smooth discharge of the internal extinguishing agent.

[0060] like Figure 1As shown, according to one embodiment of the present invention, the window-breaking device 4 is a pyramidal structure. In this embodiment, multiple window-breaking devices 4 are arranged in a regular, spaced pattern on the projectile 1. The regular distribution of multiple window-breaking devices 4 forms a window-breaking area, effectively increasing the window-breaking position and improving the window-breaking effect of the present invention.

[0061] The above description is merely an example of a specific solution of the present invention. For any devices and structures not described in detail herein, it should be understood that they are implemented using common devices and methods already available in the art.

[0062] The above description is merely one embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fragmentation-free fire extinguishing bomb, characterized in that, include: The warhead (1), the fire-extinguishing warhead (2), the propulsion device (3), the window-breaking device (4), and the control unit; The warhead (1) and the propulsion device (3) are located at opposite ends of the fire extinguishing warhead (2), and the propulsion device (3) and the fire extinguishing warhead (2) are detachably disposed; The window-breaking device (4) is installed at the end of the warhead (1) away from the fire-extinguishing warhead (2); The control unit is disposed inside the warhead (1); The fire extinguishing warhead (2) includes: an outer shell (21), an inner shell (22) coaxially disposed with the outer shell (21), and a fire extinguishing agent release device (23) coaxially disposed with the inner shell (22). The outer shell (21) is a hollow regular column, which includes: a plurality of outer shell parts (211), an opening and closing mechanism (212) for connecting the outer shell parts (211), and for controlling the opening and closing of the outer shell parts (211). The inner shell (22) is a hollow regular column with multiple through holes (221) spaced apart on its side wall. The extinguishing agent release device (23) is a compressed gas explosion type extinguishing device; The opening and closing mechanism (212) includes: a first connector (2121) and a second connector (2122); The first connector (2121) includes: a hollow tubular body (2121a), a first elastic member (2121b) disposed in the tubular body (2121a), a limiting structure (2121c) disposed on the side wall of the tubular body (2121a), and a vent hole (2121d) disposed on the side wall of the tubular body (2121a) and penetrating the side wall. The second connector (2122) has a sliding guide (2122a) at one end; The sliding guide (2122a) is slidably disposed within the tubular body (2121a), and the sliding guide (2122a) is provided with a matching limiting structure (2122b) that cooperates with the limiting structure (2121c). When the matching limiting structure (2122b) is connected to the limiting structure (2121c), the sliding guide (2122a) is abutted against the first elastic member (2121b), and the first elastic member (2121b) is in a compressed state. The vent (2121d) and the first elastic element (2121b) are located on the same side of the sliding guide (2122a); The two axial ends of the inner shell (22) are respectively fixedly connected to the first connecting member (2121) of the opening and closing mechanism (212); The extinguishing agent release device (23) is rotatably connected to the inner shell (22) at both ends of its axial direction; An end cap is provided on the end of the tubular body (2121a) away from the outer shell portion (211), and a one-way air valve is provided on the end cap.

2. The fragmentless fire extinguishing bomb according to claim 1, characterized in that, The second connector (2122) and the first connector (2121) are arranged to slide linearly relative to each other; The two ends of the first connector (2121) that are far apart from each other are respectively connected to the two opposite outer shell parts (211) for driving the two opposite outer shell parts (211) to open and close in a linear direction.

3. The fragmentless fire extinguishing bomb according to claim 2, characterized in that, The limiting structure (2121c) includes: a receiving cavity (2121c1), a second elastic member (2121c2) disposed in the receiving cavity (2121c1), and a movable limiting member (2121c3) that can slide along the receiving cavity (2121c1). The receiving cavity (2121c1) is connected to the tubular body (2121a); The shape of the movable limiting member (2121c3) is configured to match the opening shape of the receiving cavity (2121c1); One end of the movable limiting member (2121c3) abuts against the second elastic member (2121c2), and the other end is configured to match the shape of the inner wall of the tubular body (2121a). The movable limiting member (2121c3) has a limiting protrusion (2121c31) connected to the matching limiting structure (2122b) at one end away from the second elastic member (2121c2). When the limiting protrusion (2121c31) is connected to the matching limiting structure (2122b), the sliding guide (2122a) partially obscures the end face of the movable limiting member (2121c3).

4. The fragmentless fire extinguishing bomb according to claim 3, characterized in that, At least one set of opening and closing mechanisms (212) is provided in the outer shell (21), and two parallel opening and closing mechanisms (212) constitute a set; Along the axial direction of the outer shell portion (211), the opening and closing mechanisms (212) are arranged at intervals and parallel to each other.

5. The fragmentless fire extinguishing bomb according to claim 4, characterized in that, The extinguishing agent release device (23) includes: a hollow cylinder (231) with openings at both ends, a front cover (232) for connecting to the front end of the hollow cylinder (231), a rear cover (233) for connecting to the rear end of the hollow cylinder (231), a first rotating shaft (234) provided on the front cover (232), a second rotating shaft (235) provided on the rear cover (233), and a heater (236); One end of the heater (236) is detachably mounted on the front cover (232), and the other end extends into the hollow cylinder (231); The first rotating shaft (234) is a hollow shaft, and the wires of the heater (236) are led out through the hollow part of the first rotating shaft (234).

6. The fragmentless fire extinguishing bomb according to claim 5, characterized in that, The hollow cylinder (231) has a plurality of grooves (231a) on its outer side surface, and the opening direction of the grooves (231a) is set at an angle to the radial direction of the hollow cylinder (231). Along the axial direction of the hollow cylinder (231), the groove (231a) is a straight groove extending in a straight direction, or the groove (231a) is a spiral groove extending in a spiral direction. A groove is provided at the bottom of the groove (231a).

7. The fragmentless fire extinguishing bomb according to claim 6, characterized in that, The hollow cylinder (231) includes: an inner cylinder part (2311) and an outer cylinder part (2312) arranged coaxially. The inner cylinder part (2311) has a plurality of through grooves on its side wall, and the opening direction of the through grooves is set at an angle to the radial direction of the inner cylinder part (2311). The outer cylinder portion (2312) is sealed to the inner cylinder portion (2311) to close the through groove, and a groove is provided on the outer cylinder portion (2312) at a position corresponding to the through groove.

8. The non-fragmented fire extinguishing bomb according to any one of claims 1 to 7, characterized in that, The window-breaking device (4) has a pyramidal structure; The window-breaking device (4) has multiple units arranged in a regular pattern with intervals on the warhead (1).

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