Self-driven fire extinguishing device based on Fibonacci spiral arrangement and sprayer

Abstract

The invention provides a self-driven fire extinguishing device based on Fibonacci spiral arrangement and a sprayer. The self-driven fire extinguishing device comprises a chassis, and a driving advancing module and a fire source detection module are arranged on the chassis; the liquid supply module is arranged on the chassis or connected with an external water source through a pipeline; the sprayer is arranged at the top of the chassis, communicates with the liquid supply module and sprays a fire extinguishing medium upwards; the sprayer comprises at least one self-rotating integrated nozzle, and each self-rotating integrated nozzle comprises a fixed seat, a rotating spray head rotating relative to the fixed seat and a fluid dynamic pressure self-tightening type sealing driving mechanism connected with the fixed seat and the rotating spray head; and a plurality of liquid spraying openings which are spirally distributed based on the Fibonacci sequence principle are integrated on the end face of the rotary spraying head. The sprayer comprises an elevation angle adjusting assembly and a fluid power torque conversion assembly, and pressure energy or kinetic energy of fluid is converted into tangential mechanical torque for driving the main rotating body to continuously rotate by 360 degrees around the rotating axis of the main rotating body.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing equipment technology, and more specifically, to a self-driven fire extinguishing device and sprinkler based on a Fibonacci spiral arrangement. Background Technology

[0002] With the rapid popularization of new energy electric vehicles, the battery pack, a core component, is highly susceptible to thermal runaway and fires under overcharging, collisions, or extreme conditions. These chassis fires are characterized by sudden ignition, intense combustion, extremely rapid spread, and are often accompanied by high-temperature toxic fumes and a very high risk of reignition. Because the fire source is hidden deep beneath the chassis in extremely narrow spaces, firefighting is extremely difficult.

[0003] Existing conventional firefighting equipment has significant limitations in dealing with this type of special fire: Large spatial obstructions and coverage blind spots: Fixed nozzles usually spray from top to bottom, and most of the extinguishing medium is blocked by the top of the vehicle body, making it impossible to reach the fire point under the chassis; even traditional static sprinkler racks placed under the vehicle often cannot efficiently cover the irregular and complex underside area of ​​the vehicle in terms of water mist distribution pattern, resulting in serious coverage dead spots and uneven water flow distribution. This leads to localized failure to cool down and continuous thermal runaway, which seriously affects the extinguishing efficiency.

[0004] Manual intervention is risky and lacks accuracy: Fire scenes are accompanied by high temperatures and toxic smoke. When firefighters approach the bottom of the vehicle to respond manually and operate by hand, there is not only a great risk to their lives, but also a serious delay in manual response and operation due to obstructed vision. It is impossible to carry out accurate and continuous firefighting operations against hidden fire sources under the vehicle.

[0005] Unreliability of complex systems in extreme environments: Some existing mobile fire extinguishing equipment relies on external motors or complex electrical control systems to drive the nozzle rotation. In extreme and harsh environments such as fire scenes with temperatures of hundreds of degrees Celsius, high-pressure water immersion, and the risk of power outages, the electrical drive mechanism is prone to short circuits or mechanical jamming, resulting in complete failure. Summary of the Invention

[0006] This invention provides a self-driven fire extinguishing device and sprinkler based on a Fibonacci spiral arrangement, aiming to solve the problems of unsafe fire extinguishing and uneven spraying of fire extinguishing media in existing fire extinguishing technologies, and to improve the accuracy and safety of fire extinguishing.

[0007] To achieve the above objectives, the present invention provides a self-propelled fire extinguishing device based on a Fibonacci spiral arrangement, comprising: The chassis is equipped with a drive module and a fire source detection module. The fire source detection module and the drive module guide the chassis to move under the target object and locate the fire source. The liquid supply module is mounted on the chassis or connected to an external water source via pipeline; A sprinkler, located on top of the chassis and connected to the liquid supply module, sprays fire extinguishing medium upwards. The sprinkler includes at least one self-rotating integrated nozzle, which includes a fixed base, a rotating nozzle that rotates relative to the fixed base, and a hydrodynamic self-tightening sealing drive mechanism connecting the fixed base and the rotating nozzle. The end face of the rotating nozzle has several spray ports, which are spirally distributed based on the Fibonacci sequence principle. The fluid dynamic pressure self-tightening sealing drive mechanism achieves axial self-tightening sealing under the fluid pressure of the extinguishing medium. At the same time, it uses the component force of the fluid flow to generate torque to drive the rotating nozzle to rotate around the axis, so that the extinguishing medium sprayed from the Fibonacci arrangement nozzles expands the spray coverage area under the action of centrifugal force.

[0008] In one embodiment, the fluid dynamic pressure self-tightening sealing drive mechanism includes a dynamic sealing ring and a static sealing ring disposed between the fixed base and the rotating nozzle; A spiral guide groove is provided on the sealing contact surface of the dynamic or static sealing ring; when the high-pressure extinguishing medium enters, the spiral guide groove generates a hydrodynamic pressure effect on the sealing contact surface, which generates a tangential force to drive the rotating nozzle to rotate while maintaining the micro-gap liquid film sealing of the sealing contact surface.

[0009] In one embodiment, the axis of the spray nozzle forms an angle of 10 to 45 degrees with the axis of rotation of the rotating nozzle, so that the sprayed fluid forms an inverted conical water curtain when rotating, and the inverted conical water curtain expands outward under the action of centrifugal force as the rotation speed increases.

[0010] In one embodiment, the chassis is designed as a flat structure that fits into the space beneath the vehicle chassis.

[0011] In one embodiment, the fire source detection module includes one or more of an upward-viewing infrared thermal imaging detector, a temperature detector, or a flame detector. The fire source detection module detects temperature anomalies in the upper area in real time and controls the driving module to brake and stop when a fire source is detected.

[0012] In one embodiment, the sprayer includes a plurality of self-rotating integrated nozzles arranged in an array, the plurality of self-rotating integrated nozzles being connected in parallel to the liquid supply module through an internal flow channel, and the spray coverage areas of two adjacent self-rotating integrated nozzles having an overlap area under maximum operating pressure.

[0013] In one embodiment, the hydrodynamic self-tightening seal drive mechanism further includes an elastic preload element that provides an initial sealing pressure when there is no fluid pressure. When the fluid pressure increases, the rotating nozzle generates an axial clamping force relative to the fixed seat under the action of the fluid pressure. The axial clamping force is proportional to the fluid pressure, so that the higher the pressure, the tighter the seal.

[0014] A sprayer, comprising: The fixed base has a main liquid inlet and a fluid channel inside; The self-rotating integrated nozzle includes: The main rotating body includes a first bearing and a rotary seal assembly. The main rotating body is rotatably mounted on the fixed base via the first bearing and the rotary seal assembly. The main rotating body has a distribution channel communicating with the fluid channel inside. The main rotating body can rotate 360 ​​degrees on the horizontal plane. An elevation angle adjustment component is disposed on the top of the main rotating body. The elevation angle adjustment component controls the tilt angle of the axis of the self-rotating integrated nozzle relative to the rotation axis of the main rotating body within the range of 0 to 90 degrees. A rotating nozzle is mounted on the elevation adjustment assembly and communicates with the distribution channel. Multiple spray nozzles are provided on the end face of the rotating nozzle, and the multiple spray nozzles are distributed in a spiral shape based on the Fibonacci sequence principle. A fluid self-driven mechanism includes a fluid dynamic torque conversion component, which changes the fluid flow vector of the high-pressure fire extinguishing medium to convert the pressure energy or kinetic energy of the fluid into a tangential mechanical torque that drives the main rotating body to rotate continuously 360 degrees around its rotation axis.

[0015] In one embodiment, the elevation angle adjustment assembly includes a fluid pressure-controlled angle adjustment mechanism disposed within the main rotating body, comprising an elastic reset element, a displacement piston driven by fluid pressure, and a transmission link. In the initial state, the elastic reset element keeps the rotating nozzle at its initial retraction angle. When the high-pressure extinguishing medium is introduced, the fluid pressure drives the displacement piston to overcome the resistance of the elastic reset element and generate a linear displacement. The displacement piston is then pushed by the transmission link to deflect the rotating nozzle around the hinge axis, thereby automatically adjusting the spray elevation angle according to the liquid supply pressure.

[0016] In one embodiment, the elevation angle adjustment assembly is a manual fixed-angle adjustment assembly, which includes a lockable hinge joint or an angle adjustment gear for setting and locking the elevation angle of the rotating nozzle at a fixed degree.

[0017] The present invention has the following beneficial effects: 1. Spatial distribution optimization: The nozzles are arranged according to the golden angle spiral principle of the Fibonacci sequence, maximizing the number density of nozzles within a limited nozzle end face area and eliminating spray blind spots caused by concentric circle arrangement. 2. Self-tightening seal and drive integration: It adopts a hydrodynamic self-tightening mechanical seal structure, which uses the pressure of high-pressure water column to achieve dynamic adaptive sealing, and at the same time converts the fluid pressure into mechanical torque to drive the nozzle to rotate automatically; 3. Centrifugal Enhanced Spraying: The nozzle is preset with a specific tilt angle, which, combined with the centrifugal force generated by rotation, causes the sprayed fluid to form an expanding water curtain, significantly increasing the effective spraying area and improving uniformity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a self-driven fire extinguishing device based on a Fibonacci spiral arrangement according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a sprayer tilted according to an embodiment of the present invention; Figure 3 This is a front view of a sprayer according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the spray nozzle of a sprayer according to an embodiment of the present invention; Figure 5 This is a top view of a sprayer according to an embodiment of the present invention.

[0019] Among them, 100 is the chassis; 200 is the self-rotating integrated nozzle; 210 is the fixed base; 220 is the rotating nozzle; 221 is the liquid spraying port; and 230 is the fluid dynamic pressure self-tightening sealing drive mechanism. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0021] Figure 1 This is a schematic diagram of the structure of a self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to an embodiment of the present invention, including: A chassis 100 is provided with a drive module and a fire source detection module. The fire source detection module and the drive module guide the chassis 100 to move under the target object and locate the fire source. The liquid supply module is mounted on the chassis 100 or connected to an external water source via pipeline; A sprinkler, mounted on top of the chassis 100 and connected to the liquid supply module, sprays fire extinguishing medium upwards; such as Figure 2 , Figure 3 , Figure 5As shown, the sprayer includes at least one self-rotating integrated nozzle 200. The self-rotating integrated nozzle 200 includes a fixed base 210, a rotating nozzle 220 that rotates relative to the fixed base 210, and a hydrodynamic self-tightening sealing drive mechanism 230 connecting the fixed base 210 and the rotating nozzle 220. The end face of the rotating nozzle 220 is integrated with a plurality of spray ports 221, which are spirally distributed based on the Fibonacci sequence principle. The fluid dynamic pressure self-tightening sealing drive mechanism achieves axial self-tightening sealing under the fluid pressure of the extinguishing medium. At the same time, it uses the component force of the fluid flow to generate torque to drive the rotating nozzle 220 to rotate around the axis, so that the extinguishing medium sprayed from the Fibonacci arrangement nozzles expands the spray coverage area under the action of centrifugal force.

[0022] In one embodiment, the fluid dynamic pressure self-tightening sealing drive mechanism includes a dynamic sealing ring and a static sealing ring disposed between the fixed base 210 and the rotating nozzle 220; A spiral guide groove is provided on the sealing contact surface of the dynamic sealing ring or the static sealing ring; when the high-pressure extinguishing medium enters, the spiral guide groove generates a hydrodynamic pressure effect on the sealing contact surface, which generates a tangential force to drive the rotating nozzle 220 to rotate while maintaining the sealing of the liquid film in the micro gap of the sealing contact surface.

[0023] Specifically, the spiral guide groove can be selected in micrometer or millimeter scale according to the actual situation.

[0024] In one embodiment, the axis of the spray nozzle forms an angle of 10 to 45 degrees with the axis of rotation of the rotating nozzle 220, so that the sprayed fluid forms an inverted conical water curtain when rotating, and the inverted conical water curtain expands outward under the action of centrifugal force as the rotation speed increases.

[0025] In one embodiment, the chassis 100 is designed as a flat structure that fits into the space below the vehicle chassis 100.

[0026] In one embodiment, the fire source detection module includes one or more of an upward-viewing infrared thermal imaging detector, a temperature detector, or a flame detector. The fire source detection module detects temperature anomalies in the upper area in real time and controls the driving module to brake and stop when a fire source is detected.

[0027] Preferably, an array of infrared thermal imaging detectors and dual-band (UV / IR) flame detectors are combined on the top of the chassis 100. The detectors are externally fitted with high-temperature resistant sapphire protective windows and equipped with air curtain purge or micro-water self-cleaning devices to prevent smoke and dust from obstructing the view. When the temperature in a certain area exceeds a set threshold and exhibits an abnormally rapid upward gradient, and is simultaneously captured by the dual-band flame detectors using a unique spectrum, it is determined to be the location of a battery thermal runaway fire source.

[0028] The driving module can generate a real-time thermal distribution map of the chassis 100 using an infrared thermal imaging detector. The algorithm uses image processing to locate the highest temperature point or the center of heat radiation. As the chassis 100 moves, the relative coordinates between the chassis 100 and the center of the fire source are monitored in real time. When the relative deviation of the relative coordinates is less than a set threshold, a braking command is triggered.

[0029] Furthermore, the rotating nozzles 220, arranged according to the Fibonacci sequence, begin spraying water under high pressure, generating a counter-thrust. If the power to the drive motor were simply cut off at this point, the chassis 100 would be instantly pushed away from the fire source by the water pressure. Therefore, the drive module is also equipped with a normally closed electromagnetic brake. When a target is detected or a sudden power outage occurs at the fire scene, the electromagnet loses power, and a powerful spring instantly locks the wheels, achieving a mechanical lock and preventing the chassis from being swept away by the water pressure.

[0030] When the sprinkler is activated and sprays the main fire extinguishing medium upwards, it also releases a small amount of water curtain around the chassis 100, forming a water vapor protective cover around the chassis 100 to isolate extremely high temperature heat radiation and protect the internal electronic components and batteries.

[0031] In one embodiment, the sprayer includes a plurality of self-rotating integrated nozzles 200 arranged in an array, the plurality of self-rotating integrated nozzles 200 being connected in parallel to the liquid supply module through internal flow channels, and the spray coverage areas of two adjacent self-rotating integrated nozzles 200 having an overlap area under maximum operating pressure.

[0032] In one embodiment, the hydrodynamic self-tightening seal drive mechanism further includes an elastic preload element that provides an initial sealing pressure when there is no fluid pressure. When the fluid pressure increases, the rotating nozzle 220 generates an axial clamping force relative to the fixed seat 210 under the action of the fluid pressure. The axial clamping force is proportional to the fluid pressure, so that the higher the pressure, the tighter the seal.

[0033] The specific principle of this embodiment is as follows: Chassis 100 and Intelligent Detection Parking: The device includes a flat chassis 100, the height of which is adapted to the clearance under a common automotive chassis 100. The chassis 100 integrates a drive module, a fluid supply module, and a fire source detection module. During movement, the detection module scans the area above in real time. To prevent the chassis 100 from shifting due to the enormous recoil force of the high-pressure water jet, the system has built-in braking logic: when the detection module detects a sharp rise in temperature and captures flame characteristics, and calculates that the sprayer center is aligned with the core area of ​​the fire source, it sends a command to the drive module. The electromagnetic brake of the drive module is instantly de-energized and locked, achieving a purely mechanical hard anchoring parking position.

[0034] Sprayer and Fibonacci Array: Multiple self-rotating integrated nozzles 200 are arrayed on the top of the chassis 100, connected in parallel to the liquid supply module via internal flow channels. The coverage areas of adjacent nozzles overlap under operating pressure. Each self-rotating integrated nozzle 200 has several spray orifices integrated on its rotating nozzle head 220 end face. These spray orifices are arranged strictly according to the golden angle spiral principle of the Fibonacci sequence. Furthermore, the axis of the spray orifice forms a preset angle of 10 to 45 degrees with the rotation axis of the rotating nozzle head 220. This arrangement maximizes the spray density within a limited end face; when the rotating nozzle head 220 rotates, the ejected fluid forms an outwardly expanding inverted cone-shaped water curtain under centrifugal force, eliminating the central and edge spray blind spots of traditional concentric circle arrangements.

[0035] The hydrodynamic self-tightening sealing drive mechanism consists of an integrated dynamic and static sealing ring between the fixed base 210 and the rotating nozzle 220, with a wave spring or other elastic pre-tightening element between them to provide initial sealing pressure. Micron- or millimeter-level spiral guide grooves are precisely machined on the sealing contact surfaces of the dynamic or static sealing rings. When high-pressure extinguishing medium is introduced, the water pressure pushes the rotating nozzle 220, generating an axial clamping force proportional to the fluid pressure. This overcomes the defect of traditional mechanical seals being prone to side leakage under high pressure, achieving "the higher the pressure, the tighter the seal." Furthermore, the high-pressure fluid entering the spiral guide grooves in the sealing surface gap maintains micro-gap liquid film lubrication under hydrodynamic effects. The resulting tangential force is directly converted into a powerful rotational torque, forcibly driving the rotating nozzle to rotate at high speed.

[0036] Figure 2 , Figure 3 This is a schematic diagram of the structure of a sprayer in this embodiment, including: The fixed base 210 has a liquid inlet and a fluid channel inside; The self-rotating integrated nozzle 200 includes: The main rotating body includes a first bearing and a rotary seal assembly. The main rotating body is rotatably mounted on the fixed base 210 via the first bearing and the rotary seal assembly. The main rotating body has a distribution channel communicating with the fluid channel inside. The main rotating body can rotate 360 ​​degrees on the horizontal plane. An elevation angle adjustment component is disposed on the top of the main rotating body. The elevation angle adjustment component controls the tilt angle of the axis of the self-rotating integrated nozzle 200 relative to the rotation axis of the main rotating body within the range of 0 to 90 degrees. Rotary nozzle 220, Figure 5 As shown, the rotary nozzle 220, mounted on the elevation adjustment assembly and connected to the distribution channel, has multiple spray nozzles 221 on its end face. These multiple spray nozzles 221 are arranged in a spiral shape based on the Fibonacci sequence principle. Figure 4 This is a partial structural diagram of the spray nozzle of the sprayer; A fluid self-driven mechanism includes a fluid dynamic torque conversion component, which changes the fluid flow vector of the high-pressure fire extinguishing medium to convert the pressure energy or kinetic energy of the fluid into a tangential mechanical torque that drives the main rotating body to rotate continuously 360 degrees around its rotation axis.

[0037] Specifically, the fluid dynamic torque conversion component is a fluid dynamic pressure guide channel disposed between the fixed base 210 and the dynamic interface of the main rotating body, or a hydraulic reversing impeller or turbine structure built into the internal flow channel of the main rotating body.

[0038] In one embodiment, the elevation angle adjustment assembly includes a fluid pressure-controlled angle adjustment mechanism disposed within the main rotating body, comprising an elastic reset element, a displacement piston driven by fluid pressure, and a transmission link. In the initial state, the elastic reset element keeps the rotating nozzle at its initial retraction angle. When the high-pressure extinguishing medium is introduced, the fluid pressure drives the displacement piston to overcome the resistance of the elastic reset element and generate a linear displacement. The displacement piston is then pushed by the transmission link to deflect the rotating nozzle around the hinge axis, thereby automatically adjusting the spray elevation angle according to the liquid supply pressure.

[0039] In one embodiment, the elevation angle adjustment assembly is a manual fixed-angle adjustment assembly, which includes a lockable hinge joint or an angle adjustment gear for setting and locking the elevation angle of the rotating nozzle at a fixed degree.

[0040] Specifically, when the elevation adjustment assembly uses an angle adjustment gear disc, it consists of two discs with radially arranged teeth. One disc is fixed to the lower main rotating body, and the other is fixed to the upper rotating nozzle. A threaded locking shaft passes through the middle of the two discs. When it is necessary to change the spray angle, the handle is loosened, and the two discs separate. At this time, the desired angle can be adjusted by moving the rotating nozzle up and down.

[0041] When the elevation adjustment assembly uses a lockable hinged joint, the lower main rotating body has a U-shaped bracket, and the bottom of the upper rotating nozzle has a round hole through which a horizontal pin passes. One end of the pin has a knob. When loosened, the rotating nozzle can pitch freely around the pin; when tightened, the two side plates of the U-shaped bracket will retract inward, firmly clamping the bottom of the rotating nozzle.

[0042] The elevation adjustment assembly can also employ a purely hydraulically driven, pressure-controlled automatic angle-changing mechanism, utilizing the fluid pressure of the extinguishing medium itself to achieve automatic angle adjustment. A hydraulic piston with a return spring is installed in the internal flow channel of the main rotating body. The top of this piston is hinged to the eccentric position of the rotating nozzle via a connecting rod.

[0043] Initially, the return spring presses the piston to its lowest position, at which point the connecting rod pulls the nozzle, keeping it at 0 degrees. When the water pump starts, high-pressure water rushes in. The water pressure overcomes the spring force, pushing the piston upwards. As the piston moves upwards, it pushes the rotating nozzle around its hinge axis via the connecting rod. The greater the water pressure, the higher the piston rises, and the greater the elevation angle of the rotating nozzle.

[0044] In complex fire situations, the use of the sprinklers described in the above embodiments may be limited. Therefore, this embodiment provides a multi-angle self-driven rotary sprinkler.

[0045] The assembly includes a stationary base 210 and a main rotating body mounted on the base 210 via a first bearing and a rotary seal assembly. A manually adjustable elevation angle assembly is located on top of the main rotating body. Before the device is installed, the elevation angle of the rotating nozzle can be manually set and mechanically fixed at any fixed angle within the range of 0 to 90 degrees using this assembly.

[0046] To ensure the main rotating body can still perform 360-degree sweeping even when the rotating nozzle is locked at any angle, the device incorporates a hydrodynamic torque conversion component independent of the spray angle. In this embodiment, this component uses a hydrodynamic flow guide channel: the hydrodynamic flow guide channel is located at the dynamic interface between the fixed base 210 and the main rotating body. High-pressure fluid, with the stationary fixed base 210 as its mechanical fulcrum, is forced to change its flow vector as it flows through the flow guide channel, converting the reverse thrust into tangential torque, thereby driving the main rotating body, along with the locked nozzle above, to perform a continuous 360-degree rotation. This eliminates the dependence on the reaction force of the water spray.

[0047] In another embodiment, in extremely dangerous fire scenes, personnel cannot approach to manually adjust the angle. This embodiment, based on the above embodiments, provides an advanced solution for achieving fully automatic angle adjustment using pure fluid dynamics.

[0048] The elevation adjustment assembly has been replaced with a highly integrated fluid pressure-controlled angle adjustment mechanism. This mechanism is built into the flow channel cavity of the main rotating body and mainly consists of an elastic reset element, a water pressure piston, and a transmission linkage connecting the eccentric position at the bottom of the nozzle.

[0049] In the initial travel state: when high-pressure water is not supplied or the pressure is low, the return spring presses the piston to the low position, and the transmission linkage pulls the nozzle, keeping it in a 0-degree retracted state. This prevents the nozzle from scraping when the device enters under low-profile vehicles.

[0050] When a fire source is detected and a high-pressure medium is pumped in by a fire truck, the fluid pressure rises sharply within the flow channel, overcoming spring resistance and pushing the piston upward. The piston's linear displacement is converted into mechanical thrust via a connecting rod, forcing the rotating nozzle to gradually tilt downward around its hinge axis.

[0051] The higher the water pressure, the greater the piston displacement and the greater the nozzle elevation angle (approaching 90 degrees at its maximum). This achieves a purely mechanical intelligent angle-changing mechanism that allows for "low-pressure concentrated top spraying and high-pressure dispersed large-area coverage."

[0052] Furthermore, the hydrodynamic torque conversion component in this embodiment can also employ a hydraulically reversing impeller built into the main flow channel of the main rotating body. When high-pressure water flows into the flow channel and attempts to push the piston, it inevitably impacts the impeller intercepted in the flow channel. The impeller absorbs the linear kinetic energy of the fluid and generates rotation, and this rotational torque is directly transmitted to the outer shell of the main rotating body, forcing it to rotate 360 ​​degrees horizontally. Since the impeller captures the kinetic energy of the internal flowing medium, the rotation of the main rotating body remains stable and continuous regardless of how many degrees the upper nozzle is opened by water pressure.

[0053] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0054] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. It should also be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0055] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "driving" used in the description of this application should be interpreted broadly. They can refer to direct connections, connections through an intermediate medium, or relationships within two elements. Those skilled in the art can understand their specific meaning in this application based on the specific circumstances.

[0056] The embodiments described above are merely further illustrations of the present invention and are not intended to limit the present invention in any other way. The present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and changes based on the present invention, but all such modifications and changes should fall within the protection scope of the present invention.

Claims

1. A self-propelled fire extinguishing device based on a Fibonacci spiral arrangement, characterized in that, include: The chassis is equipped with a drive module and a fire source detection module. The fire source detection module and the drive module guide the chassis to move under the target object and locate the fire source. The liquid supply module is mounted on the chassis or connected to an external water source via pipeline; A sprinkler, located on top of the chassis and connected to the liquid supply module, sprays fire extinguishing medium upwards. The sprinkler includes at least one self-rotating integrated nozzle, which includes a fixed base, a rotating nozzle that rotates relative to the fixed base, and a hydrodynamic self-tightening sealing drive mechanism connecting the fixed base and the rotating nozzle. The end face of the rotating nozzle has several spray ports, which are spirally distributed based on the Fibonacci sequence principle. The fluid dynamic pressure self-tightening sealing drive mechanism achieves axial self-tightening sealing under the fluid pressure of the extinguishing medium. At the same time, it uses the component force of the fluid flow to generate torque to drive the rotating nozzle to rotate around the axis, so that the extinguishing medium sprayed from the Fibonacci arrangement nozzles expands the spray coverage area under the action of centrifugal force.

2. The self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to claim 1, characterized in that, The fluid dynamic pressure self-tightening sealing drive mechanism includes a dynamic sealing ring and a static sealing ring disposed between the fixed base and the rotating nozzle; A spiral guide groove is provided on the sealing contact surface of the dynamic or static sealing ring; when the high-pressure extinguishing medium enters, the spiral guide groove generates a hydrodynamic pressure effect on the sealing contact surface, which generates a tangential force to drive the rotating nozzle to rotate while maintaining the micro-gap liquid film sealing of the sealing contact surface.

3. The self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to claim 1, characterized in that, The axis of the spray nozzle forms an angle of 10 to 45 degrees with the axis of rotation of the rotating nozzle, so that the sprayed fluid forms an inverted conical water curtain when rotating, and the inverted conical water curtain expands outward under the action of centrifugal force as the rotation speed increases.

4. The self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to claim 1, characterized in that, The chassis is designed with a flat structure to fit the space under the car chassis.

5. The self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to claim 1, characterized in that, The fire source detection module includes one or more of an upward-viewing infrared thermal imaging detector, a temperature detector, or a flame detector. The fire source detection module detects temperature anomalies in the upper area in real time and controls the driving module to brake and stop when a fire source is detected.

6. The self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to claim 1, characterized in that, The sprayer includes a plurality of self-rotating integrated nozzles arranged in an array. The plurality of self-rotating integrated nozzles are connected in parallel to the liquid supply module through an internal flow channel, and the spray coverage areas of two adjacent self-rotating integrated nozzles have an overlap area under the maximum working pressure.

7. The self-propelled fire extinguishing device based on a Fibonacci spiral arrangement according to claim 2, characterized in that, The hydrodynamic self-tightening seal drive mechanism also includes an elastic preload element to provide an initial sealing pressure when there is no fluid pressure. When the fluid pressure increases, the rotating nozzle generates an axial clamping force relative to the fixed seat under the action of the fluid pressure. The axial clamping force is proportional to the fluid pressure, so that the higher the pressure, the tighter the seal.

8. A sprayer, characterized in that, include: The fixed base has a main liquid inlet and a fluid channel inside; The self-rotating integrated nozzle includes: The main rotating body includes a first bearing and a rotary seal assembly. The main rotating body is rotatably mounted on the fixed base via the first bearing and the rotary seal assembly. The main rotating body has a distribution channel communicating with the fluid channel inside. The main rotating body can rotate 360 ​​degrees on the horizontal plane. An elevation angle adjustment component is disposed on the top of the main rotating body. The elevation angle adjustment component controls the tilt angle of the axis of the self-rotating integrated nozzle relative to the rotation axis of the main rotating body within the range of 0 to 90 degrees. A rotating nozzle is mounted on the elevation adjustment assembly and communicates with the distribution channel. Multiple spray nozzles are provided on the end face of the rotating nozzle, and the multiple spray nozzles are distributed in a spiral shape based on the Fibonacci sequence principle. A fluid self-driven mechanism includes a fluid dynamic torque conversion component, which changes the fluid flow vector of the high-pressure fire extinguishing medium to convert the pressure energy or kinetic energy of the fluid into a tangential mechanical torque that drives the main rotating body to rotate continuously 360 degrees around its rotation axis.

9. The sprayer according to claim 8, characterized in that, The elevation angle adjustment assembly includes a fluid pressure-controlled angle adjustment mechanism, which is disposed in the main rotating body and includes an elastic reset element, a displacement piston driven by fluid pressure, and a transmission link. In the initial state, the elastic reset element keeps the rotating nozzle at its initial retraction angle. When the high-pressure extinguishing medium is introduced, the fluid pressure drives the displacement piston to overcome the resistance of the elastic reset element and generate a linear displacement. The displacement piston is then pushed by the transmission link to deflect the rotating nozzle around the hinge axis, thereby automatically adjusting the spray elevation angle according to the liquid supply pressure.

10. The sprayer according to claim 8, characterized in that, The elevation angle adjustment component is a manual fixed angle adjustment component, which includes a lockable hinge joint or an angle adjustment gear, used to set and lock the elevation angle of the rotating nozzle at a fixed degree.

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