A safe and convenient-to-install automatic fire extinguishing device

Abstract

The present invention relates to the technical field of fire extinguishing devices, and discloses a safe type automatic fire extinguishing device that is convenient to install, including a mounting base, on which a covering plate and a plurality of fire extinguishing modules are installed. By providing the mounting base, the covering plate and the plurality of fire extinguishing modules, the covering plate is movably installed on the top of the mounting base, and the covering plate is used to cover the fire extinguishing modules. There is a notch on the covering plate. When a fire occurs, one of the fire extinguishing modules operates first to extinguish the fire. When the fire extinguishing module is exhausted, the driving component drives the covering plate to rotate, so that another fire extinguishing module is exposed and put into the working state. By setting the plurality of fire extinguishing modules to work in sequence, it is beneficial to deal with the phenomenon of reignition, extend the fire extinguishing time, which is more reasonable. It can also control the usage amount of the fire extinguishing modules according to the size of the fire, rationally utilize the fire extinguishing agent, and avoid the waste of the fire extinguishing agent caused by excessive fire extinguishing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing devices, and particularly to a safe and convenient-to-install automatic fire extinguishing device. Background Art

[0002] The automatic fire extinguishing patch is an efficient automatic fire extinguishing device. The main principle is that when a fire occurs, a chemical reaction is generated after the thermal sensitive wire is ignited, so that a large amount of inert gas is generated by the solid fire extinguishing agent within a period of time. The gas is discharged after being cooled by the coolant, and can effectively extinguish the fire within a short time, greatly improving safety and efficiency. Its main characteristics are convenient to use and remarkable fire extinguishing effect. It is applicable to the emergency of closed environment fires in various types of families, vehicles, factories and other places. It adopts a unique aerosol fire extinguishing principle and can quickly reduce the temperature below the fire extinguishing point, thus achieving the fire extinguishing effect.

[0003] Although the current automatic fire extinguishing patches respond quickly, their duration is generally short. In the case of complex fire conditions, even if the flames are extinguished immediately for the first time, the residual temperature of the combustibles still exists, and it is very easy to reignite under the influence of the environment after the fire is extinguished, and the fire extinguishing patch cannot continue to provide subsequent fire extinguishing functions after it fails; secondly, in the case of small flames, the fixed fire extinguishing agent in the existing automatic fire extinguishing patches will also react completely at one time, resulting in excessive fire extinguishing performance and waste of the fire extinguishing agent.

[0004] In view of the problems in the related art, no effective solution has been proposed yet. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a safe and convenient-to-install automatic fire extinguishing device, which has the advantages of good fire extinguishing effect, saving fire extinguishing agent, long service life, etc., and solves the problems that the existing automatic fire extinguishing patches cannot cope with the reignition phenomenon and waste the fire extinguishing agent when facing small fires.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A safe and convenient-to-install automatic fire extinguishing device, including a mounting base, on which a cover plate and a plurality of fire extinguishing modules are installed;

[0007] The cover plate is movably installed on the top of the mounting base. The cover plate is used to cover the fire extinguishing modules, and a notch is provided on the cover plate, and the notch corresponds to the position of one of the fire extinguishing modules so that it is exposed;

[0008] The fire extinguishing module includes a housing, in which a fire extinguishing agent and a coolant are provided. A thermal sensitive wire and a nozzle are provided on the outer surface of the housing. A driving component and a nozzle cover plate are also installed on the housing, and the driving component is used to drive the cover plate to rotate;

[0009] When the fire extinguishing module corresponding to the notch of the cover plate is in operation, it drives the driving assembly to operate, and the driving assembly forces the nozzle cover plate to move, so that the nozzle is unblocked, and the fire extinguishing module operates to generate fire extinguishing gas and spray it out through the nozzle;

[0010] When the fire extinguishing module stops running, the driving assembly drives the covering plate to rotate so that the gap corresponds to another unused fire extinguishing module, so that the unused fire extinguishing module is put into use.

[0011] Preferably, the mounting base includes a base plate, a plurality of partitions in a circular array are fixed on the surface of the base plate, the fire extinguishing module is arranged between adjacent partitions, the cover plate is located on the top of the partition, a vertical axis is fixed to the bottom of the cover plate, the vertical axis is rotatably connected to the mounting base, and a driven gear is fixed on the vertical axis.

[0012] Preferably, an isolation frame is fixed inside the shell, the drive assembly is arranged on the isolation frame, the isolation frame divides the inner cavity of the shell into a reaction chamber and a cooling chamber, the fire extinguishing agent is fixed in the reaction chamber and connected to the thermistor, and an air flow passage connecting the reaction chamber and the cooling chamber is also arranged between the side wall of the isolation frame and the inner wall of the shell.

[0013] Preferably, the drive assembly includes a bimetallic strip and a latch, the bimetallic strip is fixed on the side wall of the isolation frame close to the air flow channel, the latch is outerly provided with a sleeve, the sleeve is fixed to the inner wall of the shell, a rack is fixed to one end of the latch, a spring is fixed between the rack and the sleeve, the spring is sleeved outside the latch, the rack is fixed to the nozzle cover plate at one end away from the latch, the nozzle cover plate is slidably connected to the inner wall of the shell, and the latch is transmission-connected to the bimetallic strip at one end away from the rack through a lever.

[0014] Preferably, the lever is movably connected to the isolation frame via a rotating shaft, one end of the lever is in contact with a bimetallic strip, and the other end of the lever is provided with a notch, and the lever is sleeved on the outside of the latch through the notch.

[0015] Preferably, the drive assembly also includes a short shaft, which passes through the top wall of the shell and is rotatably connected to the top wall of the shell, a driving gear is fixed to the top of the short shaft, the driving gear is meshed with the driven gear, and the bottom end of the short shaft is connected to the rack through a one-way transmission member.

[0016] Preferably, the one-way transmission component includes a transmission gear, a pawl and a spring leaf, the transmission gear is movably connected to the bottom end of the short shaft, the transmission gear is meshed with the rack, a circular groove is provided on the surface of the transmission gear, and evenly distributed ratchet blocks are fixed on the inner wall of the circular groove, the pawl is meshed with the ratchet block, the pawl is movably connected to the short shaft through a rotating shaft, one end of the spring leaf is in contact with the pawl, and the other end of the spring leaf is fixed to the short shaft.

[0017] Preferably, a chute is provided on the surface of the bottom plate, a strip-shaped slider is fixed to the bottom of the housing, the strip-shaped slider is slidably connected to the chute, and the strip-shaped slider is fixed to the bottom plate by bolts.

[0018] Preferably, an adhesive is provided at the bottom of the bottom plate, and mounting holes are formed at the edges of the bottom plate.

[0019] Compared with the prior art, the present invention provides a safe automatic fire extinguishing device that is convenient for installation, and has the following beneficial effects:

[0020] 1. For this safe automatic fire extinguishing device that is convenient for installation, by providing a mounting seat, a covering plate and a plurality of fire extinguishing modules, when a fire occurs, when one of the fire extinguishing modules operates, it forces the driving component to operate. When the driving component operates, it moves the nozzle cover plate that blocks the nozzle, so that the fire extinguishing gas is ejected from the nozzle, thereby achieving fire extinguishing. When the fire extinguishing module is exhausted, the driving component drives the covering plate to rotate, so that another fire extinguishing module is exposed and put into the working state. By setting the plurality of fire extinguishing modules to work in sequence, it is beneficial to deal with the phenomenon of re-ignition, extend the fire extinguishing time, which is more reasonable, and the amount of fire extinguishing modules used can also be controlled according to the size of the fire, making rational use of the fire extinguishing agent and avoiding waste of the fire extinguishing agent caused by excessive fire extinguishing performance.

[0021] 2. For this safe automatic fire extinguishing device that is convenient for installation, by providing a nozzle cover plate on the fire extinguishing module, when the fire extinguishing module does not operate, it can prevent external water vapor, hot air flow or dust from entering the fire extinguishing module through the nozzle, avoiding affecting the storage of the fire extinguishing agent and the coolant, which is beneficial to improving the service life of the fire extinguishing agent and the coolant and ensuring the use effect of the fire extinguishing agent and the coolant.

[0022] 3. For this safe automatic fire extinguishing device that is convenient for installation, by setting the fire extinguishing module to be detachable, it is convenient to replace the fire extinguishing module, enabling the device to be continuously utilized and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of a safe automatic fire extinguishing device that is convenient for installation according to the present invention;

[0024] Figure 2 is an overall exploded schematic diagram of a safe automatic fire extinguishing device that is convenient for installation according to the present invention;

[0025] Figure 3 is the structural explosion of the fire extinguishing module of the present invention Figure 1 ;

[0026] Figure 4 is the structural explosion of the fire extinguishing module of the present invention Figure 1 ;

[0027] Figure 5Schematic structural diagram of the housing of the present invention;

[0028] Figure 6 Cross-sectional structural view of the fire extinguishing module of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged view of part A;

[0030] Figure 8 Schematic working diagram of the drive assembly of the present invention.

[0031] In the figure: 1, mounting base; 11, bottom plate; 111, chute; 12, partition; 2, cover plate; 21, notch; 22, vertical shaft; 23, driven gear; 3, fire extinguishing module; 31, housing; 311, strip-shaped slider; 312, bolt; 32, fire extinguishing agent; 33, coolant; 34, thermal wire; 35, nozzle; 36, drive assembly; 361, bimetallic strip; 362, pin; 363, sleeve; 364, rack; 365, spring; 366, lever; 367, short shaft; 368, driving gear; 369, one-way transmission member; 3691, transmission gear; 3692, pawl; 3693, reed; 3694, circular groove; 3695, ratchet block; 37, nozzle cover plate; 38, isolation frame; 39, flow airway. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a safe type automatic fire extinguishing device that is convenient for installation.

[0034] Please refer to Figures 1-4 , a safe type automatic fire extinguishing device that is convenient for installation, including a mounting base 1, on which a cover plate 2 and a plurality of fire extinguishing modules 3 are installed;

[0035] The cover plate 2 is movably installed on the top of the mounting base 1. The cover plate 2 is used to cover the fire extinguishing module 3. A notch 21 is provided on the cover plate 2, and the notch 21 corresponds to the position of one of the fire extinguishing modules 3 so that it is exposed.

[0036] The fire extinguishing module 3 includes a housing 31, in which a fire extinguishing agent 32 and a coolant 33 are provided. A thermal fuse 34 and a nozzle 35 are arranged on the outer surface of the housing 31. A driving assembly 36 and a nozzle cover plate 37 are also installed on the housing 31. The driving assembly 36 is used to drive the cover plate 2 to rotate;

[0037] When the fire extinguishing module 3 corresponding to the notch 21 of the cover plate 2 operates, it drives the driving assembly 36 to operate. The driving assembly 36 forces the nozzle cover plate 37 to move, so that the nozzle 35 is unblocked, and the fire extinguishing module 3 generates fire extinguishing gas during operation and sprays it out through the nozzle 35;

[0038] When the fire extinguishing module 3 stops operating, the driving assembly 36 drives the cover plate 2 to rotate, so that the notch 21 corresponds to another unused fire extinguishing module 3, so that the unused fire extinguishing module 3 is put into the operating state.

[0039] Among them, the cover plate 2 is mainly used to cover the thermal fuse 34 of the fire extinguishing module 3. Covering the thermal fuse 34 can prevent the thermal fuse 34 from contacting the heat source, thereby preventing multiple fire extinguishing modules 3 from working simultaneously. The fire extinguishing module 3 corresponding to the notch 21 on the cover plate 2 is exposed and thus in the working state. In practical applications, the fire extinguishing agent 32 and the coolant 33 are the same as those in the prior art. The dosage of the fire extinguishing agent 32 in different fire extinguishing modules 3 is set according to actual needs. The nozzle cover plate 37 corresponds to the position of the nozzle 35. In the initial state, the nozzle cover plate 37 completely covers the nozzle 35;

[0040] During use, if a fire breaks out, the thermal fuse 34 on the exposed fire extinguishing module 3 is ignited at high temperature, causing the fire extinguishing agent 32 to react to form a large amount of high-temperature fire extinguishing gas. At the same time, the driving assembly 36 operates. When the driving assembly 36 operates, it drives the nozzle cover plate 37 to move. The high-temperature fire extinguishing gas is cooled by the coolant 33 and then sprayed out through the nozzle 35 to achieve fire extinguishing. When the fire extinguishing agent 32 is exhausted by reaction and no longer forms high-temperature fire extinguishing gas, at this time, the driving assembly 36 drives the cover plate 2 to rotate. After the cover plate 2 rotates, the notch 21 corresponds to another unused fire extinguishing module 3, thereby exposing the fire extinguishing module 3;

[0041] By setting the mounting base 1, the covering plate 2 and multiple fire extinguishing modules 3, and arranging a nozzle cover plate 37 on the fire extinguishing module 3, it can prevent external water vapor, hot air flow or dust from entering the fire extinguishing module 3 through the nozzle 35, avoid affecting the storage of the fire extinguishing agent 32 and the coolant 33, improve the service life of the fire extinguishing agent 32 and the coolant 33, ensure the use effect of the fire extinguishing agent 32 and the coolant 33. When a fire occurs, when one of the fire extinguishing modules 3 operates, it forces the driving component 36 to operate. When the driving component 36 operates, it moves the nozzle cover plate 37 blocking the nozzle 35, so that the fire extinguishing gas is ejected from the nozzle 35 to achieve fire extinguishing. When the fire extinguishing module 3 is exhausted, the driving component 36 drives the covering plate 2 to rotate, making another fire extinguishing module 3 exposed and put into the working state. By setting the multiple fire extinguishing modules 3 to work in sequence, it is beneficial to deal with the phenomenon of re-ignition, extend the fire extinguishing time, and can also control the usage amount of the fire extinguishing module 3 according to the size of the fire, rationally utilize the fire extinguishing agent 32, and avoid waste of the fire extinguishing agent 32 caused by excessive fire extinguishing performance.

[0042] Further, referring to Figures 1-2 , the mounting base 1 includes a bottom plate 11, and a plurality of annularly arrayed partition plates 12 are fixed on the surface of the bottom plate 11. The fire extinguishing modules 3 are arranged between adjacent partition plates 12. The covering plate 2 is located on top of the partition plates 12. A vertical shaft 22 is fixed to the bottom of the covering plate 2, and the vertical shaft 22 is rotatably connected to the mounting base 1. A driven gear 23 is fixed on the vertical shaft 22.

[0043] Among them, the bottom plate 11 is set to be circular. The plurality of partition plates 12 divide the top surface of the bottom plate 11 into multiple areas for installing the fire extinguishing modules 3. The covering plate 2 is set to be circular, and the notch 21 is set to be fan-shaped. The vertical shaft 22 is fixed at the center of the covering plate 2, and the bottom end of the vertical shaft 22 is movably connected to the center of the bottom plate 11;

[0044] During use, when the driven gear 23 rotates, it drives the vertical shaft 22 to rotate. When the vertical shaft 22 rotates, it can further drive the covering plate 2 to rotate. When the covering plate 2 rotates, the notch 21 moves above different fire extinguishing modules 3, so that the thermal sensitive wire 34 on the top of the fire extinguishing module 3 is exposed;

[0045] By setting the covering plate 2, the covering plate 2 can cover the fire extinguishing modules 3, prevent the thermal sensitive wires 34 on the multiple fire extinguishing modules 3 from being exposed simultaneously, and avoid the multiple fire extinguishing modules 3 from working simultaneously. By setting the vertical shaft 22, it is beneficial to drive the covering plate 2 to rotate through the vertical shaft 22, and then adjust the position of the notch 21 to make different fire extinguishing modules 3 work;

[0046] Further, referring to Figures 3-6An isolation frame 38 is fixed inside the shell 31, and the drive assembly 36 is arranged on the isolation frame 38. The isolation frame 38 divides the inner cavity of the shell 31 into a reaction chamber and a cooling chamber. The fire extinguishing agent 32 is fixed in the reaction chamber and connected to the thermal line 34. An air flow passage 39 connecting the reaction chamber and the cooling chamber is also arranged between the side wall of the isolation frame 38 and the inner wall of the shell 31. The drive assembly 36 includes a bimetallic strip 361 and a latch 362. The bimetallic strip 361 is fixed on the side wall of the isolation frame 38 close to the air flow passage 39. A sleeve 363 is arranged on the outer shell of the latch 362. The sleeve 363 is fixed to the inner wall of the shell 31. The latch A rack 364 is fixed at one end of 362, a spring 365 is fixed between the rack 364 and the sleeve 363, the spring 365 is sleeved outside the latch 362, the end of the rack 364 away from the latch 362 is fixed to the nozzle cover plate 37, the nozzle cover plate 37 is slidably connected to the inner wall of the shell 31, the end of the latch 362 away from the rack 364 is transmission-connected to the bimetallic strip 361 through a lever 366, the lever 366 is movably connected to the isolation frame 38 through a rotating shaft, one end of the lever 366 is in contact with the bimetallic strip 361, the other end of the lever 366 is provided with a notch, and the lever 366 is sleeved outside the latch 362 through the notch;

[0047] The position of the nozzle 35 corresponds to the position of the cooling cavity. After the fire extinguishing agent 32 reacts, a high-temperature fire extinguishing gas is generated. The high-temperature fire extinguishing gas enters the cooling cavity through the flow channel 39, thereby cooling the high-temperature fire extinguishing gas. The structure of the bimetallic strip 361 is a prior art and is often used in temperature-controlled switches. It deforms and bends when heated and restores its shape when the temperature drops. The structure of the latch 362 includes a rod and an end provided at one end of the rod. In actual applications, the sleeve 363 is sleeved outside the rod, and the notch at the top of the lever 366 is sleeved outside the rod. The width of the notch is greater than the diameter of the rod and smaller than the diameter of the end.

[0048] When in use, the heat-sensitive wire 34 is ignited to cause the fire extinguishing agent 32 to react and generate a large amount of high-temperature fire extinguishing gas. When the high-temperature fire extinguishing gas flows through the flow channel 39, the heat of the high-temperature fire extinguishing gas causes the bimetallic strip 361 to deform and bend. When the bimetallic strip 361 deforms and bends, it pushes the bottom end of the lever 366, thereby causing the lever 366 to rotate. When the lever 366 rotates, the top end pushes the latch 362 to move the latch 362. When the latch 362 moves, it drives the rack 364 to move. When the rack 364 moves, it drives the nozzle cover plate 37 to move. After the nozzle cover plate 37 moves, the nozzle 35 is opened, so that the cooled fire extinguishing gas is ejected through the nozzle 35. At the same time, when the rack 364 moves, it also compresses the spring 365.

[0049] The heat of the fire extinguishing gas controls the deformation of the bimetallic strip 361, and then drives the nozzle cover plate 37 to move through the lever 366, the latch 362, and the rack 364, so that the cooled fire extinguishing gas can be smoothly ejected from the nozzle 35, which is conducive to achieving the fire extinguishing effect.

[0050] Further, see Figures 3-8 The drive assembly 36 also includes a short shaft 367, which passes through the top wall of the shell 31 and is rotatably connected to the top wall of the shell 31. A driving gear 368 is fixed to the top of the short shaft 367, and the driving gear 368 is meshed with the driven gear 23. The bottom end of the short shaft 367 is connected to the rack 364 through a one-way transmission member 369. The one-way transmission member 369 includes a transmission gear 3691, a ratchet 3692 and a reed 3693. The transmission gear 3691 The transmission gear 3691 is movably connected to the bottom end of the short shaft 367, and is meshed with the rack 364. A circular groove 3694 is formed on the surface of the transmission gear 3691, and evenly distributed ratchet blocks 3695 are fixed on the inner wall of the circular groove 3694. The pawl 3692 is meshed with the ratchet blocks 3695, and the pawl 3692 is movably connected to the short shaft 367 through a rotating shaft. One end of the reed 3693 is in contact with the pawl 3692, and the other end of the reed 3693 is fixed to the short shaft 367.

[0051] When the driving assembly 36 is initially operated, the rack 364 drives the nozzle cover plate 37 to move and also drives the transmission gear 3691 to rotate. At this time, the transmission gear 3691 drives the multiple ratchet blocks 3695 to rotate, but the rotation of the ratchet blocks 3695 forces the pawl 3692 to rotate, so the short shaft 367 cannot be driven to rotate through the pawl 3692.

[0052] When in use, after the high-temperature fire extinguishing gas is released, the temperature of the bimetallic strip 361 decreases and the deformation is restored. At this time, the rack 364 is pushed to move and reset under the elastic force of the spring 365. When the rack 364 moves, it drives the latch 362 and the nozzle cover plate 37 to move. At the same time, the movement of the rack 364 also drives the transmission gear 3691 to rotate. When the transmission gear 3691 rotates, it drives multiple ratchet blocks 3695 to rotate. When the ratchet block 3695 rotates, it drives the short shaft 367 to rotate through the ratchet pawl 3692. When the short shaft 367 rotates, it drives The driving gear 368 rotates. Since the driving gear 368 is meshed with the driven gear 23 at this time, when the driving gear 368 rotates, the driven gear 23 is driven to rotate. When the driven gear 23 rotates, the vertical shaft 22 is driven to rotate, and then the covering plate 2 at the top of the vertical shaft 22 rotates. After the covering plate 2 rotates, the angle of the notch 21 is adjusted so that the notch 21 corresponds to another fire extinguishing module 3. At this time, the thermal line 34 of the fire extinguishing module 3 is exposed to the outside and is put into monitoring state. If re-ignition occurs, the fire extinguishing module 3 continues to extinguish the fire.

[0053] Further, referring to Figures 1-2 , a chute 111 is provided on the surface of the bottom plate 11. A strip-shaped slider 311 is fixed to the bottom of the housing 31. The strip-shaped slider 311 is slidably connected to the chute 111, and the strip-shaped slider 311 is fixed to the bottom plate 11 by a bolt 312;

[0054] Among them, the number of the chute 111 and the strip-shaped slider 311 is the same, and is at least set to one. The end of the strip-shaped slider 311 extends outside the edge of the housing 31. The bolt 312 is provided at the end of the strip-shaped slider 311, and a screw hole matching the bolt 312 is provided on the bottom plate 11;

[0055] During use, after rotating the bolt 312, the entire fire extinguishing module 3 can be disassembled by sliding the housing 31. When reinstalling a new fire extinguishing module 3, the strip-shaped slider 311 at the bottom of the housing 31 is slid along the chute 111 on the bottom plate 11 until the housing 31 contacts the partition 12. At this time, rotate the bolt 312 into the screw hole to achieve fixation. The driving gear 368 on the installed housing 31 just meshes with the driven gear 23;

[0056] By providing the chute 111, the strip-shaped slider 311 and the bolt 312, the disassembly and assembly of the fire extinguishing module 3 are facilitated, which is beneficial to replacing a new fire extinguishing module 3 to achieve continuous use and improves the service life of the device.

[0057] Further, referring to Figure 1 , an adhesive is provided at the bottom of the bottom plate 11, and mounting holes are formed at the edge of the bottom plate 11;

[0058] Among them, the adhesive is set as 3M heat-resistant adhesive. The number of the mounting holes is preferably set to two. It can be adhered to the mounting surface through the adhesive. When facing non-planar surfaces such as pipes, it can be fixed by passing a cable tie through the mounting holes, which facilitates the installation for various scenarios.

[0059] Working principle: During use, if a fire breaks out, the thermal wire 34 on the exposed fire extinguishing module 3 is ignited at high temperature, causing the fire extinguishing agent 32 to react to form a large amount of high-temperature fire extinguishing gas. The high-temperature fire extinguishing gas enters the cooling chamber through the flow channel 39 and is cooled by the coolant 33. When the high-temperature fire extinguishing gas flows through the flow channel 39, the heat of the high-temperature fire extinguishing gas causes the bimetallic strip 361 to deform and bend. When the bimetallic strip 361 deforms and bends, it pushes the bottom end of the lever 366, thereby causing the lever 366 to rotate. When the lever 366 rotates, its top end pushes the bolt 362, causing the bolt 362 to move. When the bolt 362 moves, it drives the rack 364 to move. When the rack 364 moves, it drives the nozzle cover plate 37 to move. After the nozzle cover plate 37 moves, the nozzle 35 is opened, allowing the cooled fire extinguishing gas to be ejected through the nozzle 35. At the same time, when the rack 364 moves, it also compresses the spring 365. In addition, when the rack 364 drives the nozzle cover plate 37 to move, it also drives the transmission gear 3691 to rotate. At this time, when the transmission gear 3691 rotates, it drives a plurality of ratchet blocks 3695 to rotate. However, when the ratchet blocks 3695 rotate, it forces the ratchet pawl 3692 to rotate, so the short shaft 367 cannot be driven to rotate by the ratchet pawl 3692. When the high-temperature fire extinguishing gas is released completely, the temperature of the bimetallic strip 361 drops and it resumes its deformation. At this time, under the elastic force of the spring 365, it pushes the rack 364 to move back to its original position. When the rack 364 moves, it drives the bolt 362 and the nozzle cover plate 37 to move. At the same time, when the rack 364 moves, it also drives the transmission gear 3691 to rotate. When the transmission gear 3691 rotates, it drives a plurality of ratchet blocks 3695 to rotate. When the ratchet blocks 3695 rotate, they drive the short shaft 367 to rotate through the ratchet pawl 3692. When the short shaft 367 rotates, it drives the driving gear 368 to rotate. Since the driving gear 368 meshes with the driven gear 23 at this time, when the driving gear 368 rotates, it drives the driven gear 23 to rotate. When the driven gear 23 rotates, it drives the vertical shaft 22 to rotate. Furthermore, the cover plate 2 at the top of the vertical shaft 22 rotates. After the cover plate 2 rotates, it adjusts the angle of the notch 21, making the notch 21 correspond to another fire extinguishing module 3. At this time, the thermal wire 34 of this fire extinguishing module 3 is exposed to the outside, and thus it enters the monitoring state. If a re-ignition occurs, this fire extinguishing module 3 continues to carry out the fire extinguishing work;

[0060] By providing the mounting base 1, the covering plate 2 and a plurality of fire extinguishing modules 3, and arranging a nozzle cover plate 37 on the fire extinguishing module 3, water vapor, hot air flow or dust from the outside can be prevented from entering the fire extinguishing module 3 through the nozzle 35, so as to avoid affecting the storage of the fire extinguishing agent 32 and the coolant 33, improve the service life of the fire extinguishing agent 32 and the coolant 33, and ensure the use effect of the fire extinguishing agent 32 and the coolant 33. When a fire occurs, when one of the fire extinguishing modules 3 operates, it forces the driving assembly 36 to operate. When the driving assembly 36 operates, it moves the nozzle cover plate 37 blocking the nozzle 35, so that the fire extinguishing gas is ejected from the nozzle 35 to achieve fire extinguishing. When the fire extinguishing module 3 is exhausted, the driving assembly 36 drives the covering plate 2 to rotate, so that another fire extinguishing module 3 is exposed and put into the working state. By arranging the plurality of fire extinguishing modules 3 to work in sequence, it is beneficial to cope with the re-ignition phenomenon, extend the fire extinguishing time, and the amount of the fire extinguishing module 3 used can also be controlled according to the size of the fire, rationally utilize the fire extinguishing agent 32, and avoid waste of the fire extinguishing agent 32 caused by excessive fire extinguishing performance.

[0061] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe automatic fire extinguishing device that is easy to install, comprising a mounting base (1), Features: A cover plate (2) and a plurality of fire extinguishing modules (3) are mounted on the mounting seat (1); The cover plate (2) is movably mounted on the top of the mounting seat (1), and the cover plate (2) is used to cover the fire extinguishing module (3). A notch (21) is provided on the cover plate (2), and the notch (21) corresponds to the position of one of the fire extinguishing modules (3) so that it is exposed to the outside; The fire extinguishing module (3) comprises a shell (31), wherein a fire extinguishing agent (32) and a coolant (33) are arranged in the shell (31), a heat-sensitive wire (34) and a nozzle (35) are arranged on the outer surface of the shell (31), and a driving component (36) and a nozzle cover plate (37) are also installed on the shell (31), and the driving component (36) is used to drive the cover plate (2) to rotate; An isolation frame (38) is fixed inside the shell (31), the driving assembly (36) is arranged on the isolation frame (38), the isolation frame (38) divides the inner cavity of the shell (31) into a reaction cavity and a cooling cavity, the fire extinguishing agent (32) is fixed in the reaction cavity and connected to the thermal sensitive wire (34), and a flow passage (39) connecting the reaction cavity and the cooling cavity is also arranged between the side wall of the isolation frame (38) and the inner wall of the shell (31); The driving assembly (36) comprises a bimetallic strip (361) and a latch (362), wherein the bimetallic strip (361) is fixed to a side wall of the isolation frame (38) close to the air flow passage (39), a sleeve (363) is disposed on the latch (362), and the sleeve (363) is fixed to the inner wall of the housing (31), a rack (364) is fixed to one end of the latch (362), a spring (365) is fixed between the rack (364) and the sleeve (363), and the spring (365) is sleeved outside the latch (362), an end of the rack (364) away from the latch (362) is fixed to the nozzle cover plate (37), and the nozzle cover plate (37) is slidably connected to the inner wall of the housing (31), and an end of the latch (362) away from the rack (364) is transmission-connected to the bimetallic strip (361) via a lever (366); When the fire extinguishing module (3) corresponding to the notch (21) of the cover plate (2) is in operation, it drives the driving assembly (36) to operate, and the driving assembly (36) forces the nozzle cover plate (37) to move, so that the nozzle (35) is unblocked, and the fire extinguishing module (3) operates to generate fire extinguishing gas and sprays it out through the nozzle (35); When the fire extinguishing module (3) stops running, the driving assembly (36) drives the cover plate (2) to rotate so that the notch (21) corresponds to another unused fire extinguishing module (3), so that the unused fire extinguishing module (3) is put into use.

2. A safe automatic fire extinguishing device that is easy to install according to claim 1, Features: The mounting seat (1) comprises a base plate (11), a plurality of partition plates (12) in an annular array are fixed on the surface of the base plate (11), the fire extinguishing module (3) is arranged between adjacent partition plates (12), the cover plate (2) is located on the top of the partition plates (12), a vertical shaft (22) is fixed at the bottom of the cover plate (2), the vertical shaft (22) is rotatably connected to the mounting seat (1), and a driven gear (23) is fixed on the vertical shaft (22).

3. A safe automatic fire extinguishing device that is easy to install according to claim 2, Features: The lever (366) is movably connected to the isolation frame (38) via a rotating shaft. One end of the lever (366) is in contact with the bimetallic strip (361). The other end of the lever (366) is provided with a notch. The lever (366) is sleeved on the outside of the latch (362) through the notch.

4. A safe automatic fire extinguishing device that is easy to install according to claim 3, Features: The driving assembly (36) further comprises a short shaft (367), wherein the short shaft (367) passes through the top wall of the housing (31) and is rotatably connected to the top wall of the housing (31), a driving gear (368) is fixed to the top end of the short shaft (367), the driving gear (368) is meshed with the driven gear (23), and the bottom end of the short shaft (367) is transmission-connected to the rack (364) via a one-way transmission member (369).

5. A safe automatic fire extinguishing device that is easy to install according to claim 4, Features: The one-way transmission member (369) comprises a transmission gear (3691), a ratchet pawl (3692) and a spring leaf (3693); the transmission gear (3691) is movably connected to the bottom end of the short shaft (367); the transmission gear (3691) is meshed with the rack (364); a circular groove (3694) is provided on the surface of the transmission gear (3691); evenly distributed ratchet blocks (3695) are fixed on the inner wall of the circular groove (3694); the ratchet pawl (3692) is meshed with the ratchet blocks (3695); the ratchet pawl (3692) is movably connected to the short shaft (367) via a rotating shaft; one end of the spring leaf (3693) is in contact with the ratchet pawl (3692); and the other end of the spring leaf (3693) is fixed to the short shaft (367).

6. A safe automatic fire extinguishing device that is easy to install according to claim 5, Features: A sliding groove (111) is provided on the surface of the bottom plate (11), a strip-shaped slider (311) is fixed to the bottom of the shell (31), the strip-shaped slider (311) is slidably connected to the sliding groove (111), and the strip-shaped slider (311) is fixed to the bottom plate (11) by bolts (312).

7. A safe automatic fire extinguishing device that is easy to install according to claim 6, Features: The bottom of the base plate (11) is provided with adhesive, and the edge of the base plate (11) is provided with a mounting hole.

Images